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import glibc-2.34-60.el9

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c9 imports/c9/glibc-2.34-60.el9
CentOS Sources 2 years ago committed by MSVSphere Packaging Team
parent 85132eb253
commit 0f019b72be
98 changed files with 14292 additions and 54 deletions
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154
SOURCES/glibc-rh2117712-1.patch
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commit cca9684f2d7a74fc0b28bfb1859955e0e28d7b4b
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Aug 3 11:41:53 2022 +0200
stdio: Clean up __libc_message after unconditional abort
Since commit ec2c1fcefb200c6cb7e09553f3c6af8815013d83 ("malloc:
Abort on heap corruption, without a backtrace [BZ #21754]"),
__libc_message always terminates the process. Since commit
a289ea09ea843ced6e5277c2f2e63c357bc7f9a3 ("Do not print backtraces
on fatal glibc errors"), the backtrace facility has been removed.
Therefore, remove enum __libc_message_action and the action
argument of __libc_message, and mark __libc_message as _No_return.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
diff --git a/debug/fortify_fail.c b/debug/fortify_fail.c
index 9fa07af4867c2bd1..1b490d9da78b8d0d 100644
--- a/debug/fortify_fail.c
+++ b/debug/fortify_fail.c
@@ -21,8 +21,6 @@ void
__attribute__ ((noreturn))
__fortify_fail (const char *msg)
{
- /* The loop is added only to keep gcc happy. */
- while (1)
- __libc_message (do_abort, "*** %s ***: terminated\n", msg);
+ __libc_message ("*** %s ***: terminated\n", msg);
}
libc_hidden_def (__fortify_fail)
diff --git a/include/stdio.h b/include/stdio.h
index 23b7fd288cdaba66..3d4544575318a934 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -143,18 +143,11 @@ extern int __gen_tempname (char *__tmpl, int __suffixlen, int __flags,
# define __GT_DIR 1 /* create a directory */
# define __GT_NOCREATE 2 /* just find a name not currently in use */
-enum __libc_message_action
-{
- do_message = 0, /* Print message. */
- do_abort = 1 << 0, /* Abort. */
-};
-
/* Print out MESSAGE (which should end with a newline) on the error output
and abort. */
extern void __libc_fatal (const char *__message)
__attribute__ ((__noreturn__));
-extern void __libc_message (enum __libc_message_action action,
- const char *__fnt, ...) attribute_hidden;
+_Noreturn void __libc_message (const char *__fnt, ...) attribute_hidden;
extern void __fortify_fail (const char *msg) __attribute__ ((__noreturn__));
libc_hidden_proto (__fortify_fail)
diff --git a/malloc/malloc.c b/malloc/malloc.c
index d31e985ecce968fe..918e7936f1983437 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -298,8 +298,7 @@ _Noreturn static void
__malloc_assert (const char *assertion, const char *file, unsigned int line,
const char *function)
{
- __libc_message (do_abort, "\
-Fatal glibc error: malloc assertion failure in %s: %s\n",
+ __libc_message ("Fatal glibc error: malloc assertion failure in %s: %s\n",
function, assertion);
__builtin_unreachable ();
}
@@ -5528,7 +5527,7 @@ static void
malloc_printerr (const char *str)
{
#if IS_IN (libc)
- __libc_message (do_abort, "%s\n", str);
+ __libc_message ("%s\n", str);
#else
__libc_fatal (str);
#endif
diff --git a/sysdeps/posix/libc_fatal.c b/sysdeps/posix/libc_fatal.c
index 6d24bee6134856d1..1feacfbeba765035 100644
--- a/sysdeps/posix/libc_fatal.c
+++ b/sysdeps/posix/libc_fatal.c
@@ -54,7 +54,7 @@ struct str_list
/* Abort with an error message. */
void
-__libc_message (enum __libc_message_action action, const char *fmt, ...)
+__libc_message (const char *fmt, ...)
{
va_list ap;
int fd = -1;
@@ -123,36 +123,31 @@ __libc_message (enum __libc_message_action action, const char *fmt, ...)
WRITEV_FOR_FATAL (fd, iov, nlist, total);
- if ((action & do_abort))
+ total = (total + 1 + GLRO(dl_pagesize) - 1) & ~(GLRO(dl_pagesize) - 1);
+ struct abort_msg_s *buf = __mmap (NULL, total,
+ PROT_READ | PROT_WRITE,
+ MAP_ANON | MAP_PRIVATE, -1, 0);
+ if (__glibc_likely (buf != MAP_FAILED))
{
- total = ((total + 1 + GLRO(dl_pagesize) - 1)
- & ~(GLRO(dl_pagesize) - 1));
- struct abort_msg_s *buf = __mmap (NULL, total,
- PROT_READ | PROT_WRITE,
- MAP_ANON | MAP_PRIVATE, -1, 0);
- if (__glibc_likely (buf != MAP_FAILED))
- {
- buf->size = total;
- char *wp = buf->msg;
- for (int cnt = 0; cnt < nlist; ++cnt)
- wp = mempcpy (wp, iov[cnt].iov_base, iov[cnt].iov_len);
- *wp = '\0';
-
- /* We have to free the old buffer since the application might
- catch the SIGABRT signal. */
- struct abort_msg_s *old = atomic_exchange_acq (&__abort_msg,
- buf);
- if (old != NULL)
- __munmap (old, old->size);
- }
+ buf->size = total;
+ char *wp = buf->msg;
+ for (int cnt = 0; cnt < nlist; ++cnt)
+ wp = mempcpy (wp, iov[cnt].iov_base, iov[cnt].iov_len);
+ *wp = '\0';
+
+ /* We have to free the old buffer since the application might
+ catch the SIGABRT signal. */
+ struct abort_msg_s *old = atomic_exchange_acq (&__abort_msg,
+ buf);
+ if (old != NULL)
+ __munmap (old, old->size);
}
}
va_end (ap);
- if ((action & do_abort))
- /* Kill the application. */
- abort ();
+ /* Kill the application. */
+ abort ();
}
@@ -161,6 +156,6 @@ __libc_fatal (const char *message)
{
/* The loop is added only to keep gcc happy. */
while (1)
- __libc_message (do_abort, "%s", message);
+ __libc_message ("%s", message);
}
libc_hidden_def (__libc_fatal)

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SOURCES/glibc-rh2117712-2.patch
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commit 68e036f27f31c3378201702e182246504fb00f87
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Aug 3 11:41:53 2022 +0200
nptl: Remove uses of assert_perror
__pthread_sigmask cannot actually fail with valid pointer arguments
(it would need a really broken seccomp filter), and we do not check
for errors elsewhere.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
diff --git a/sysdeps/nptl/gai_misc.h b/sysdeps/nptl/gai_misc.h
index 261e24dae62d7871..700fd5c46b4b7c82 100644
--- a/sysdeps/nptl/gai_misc.h
+++ b/sysdeps/nptl/gai_misc.h
@@ -81,9 +81,7 @@ __gai_start_notify_thread (void)
{
sigset_t ss;
sigemptyset (&ss);
- int sigerr __attribute__ ((unused));
- sigerr = __pthread_sigmask (SIG_SETMASK, &ss, NULL);
- assert_perror (sigerr);
+ (void) __pthread_sigmask (SIG_SETMASK, &ss, NULL);
}
extern inline int
@@ -106,15 +104,12 @@ __gai_create_helper_thread (pthread_t *threadp, void *(*tf) (void *),
sigset_t ss;
sigset_t oss;
sigfillset (&ss);
- int sigerr __attribute__ ((unused));
- sigerr = __pthread_sigmask (SIG_SETMASK, &ss, &oss);
- assert_perror (sigerr);
+ (void) __pthread_sigmask (SIG_SETMASK, &ss, &oss);
int ret = __pthread_create (threadp, &attr, tf, arg);
/* Restore the signal mask. */
- sigerr = __pthread_sigmask (SIG_SETMASK, &oss, NULL);
- assert_perror (sigerr);
+ (void) __pthread_sigmask (SIG_SETMASK, &oss, NULL);
(void) __pthread_attr_destroy (&attr);
return ret;

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SOURCES/glibc-rh2117712-3.patch
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commit 9001cb1102cddba54f0e84e147dfbb0356067356
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Aug 3 11:41:53 2022 +0200
assert: Do not use stderr in libc-internal assert
Redirect internal assertion failures to __libc_assert_fail, based on
based on __libc_message, which writes directly to STDERR_FILENO
and calls abort. Also disable message translation and reword the
error message slightly (adjusting stdlib/tst-bz20544 accordingly).
As a result of these changes, malloc no longer needs its own
redefinition of __assert_fail.
__libc_assert_fail needs to be stubbed out during rtld dependency
analysis because the rtld rebuilds turn __libc_assert_fail into
__assert_fail, which is unconditionally provided by elf/dl-minimal.c.
This change is not possible for the public assert macro and its
__assert_fail function because POSIX requires that the diagnostic
is written to stderr.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
diff --git a/assert/Makefile b/assert/Makefile
index 0008de34cb484a13..2bc9e2214e3e9a8b 100644
--- a/assert/Makefile
+++ b/assert/Makefile
@@ -24,7 +24,12 @@ include ../Makeconfig
headers := assert.h
-routines := assert assert-perr __assert
+routines := \
+ __assert \
+ __libc_assert_fail \
+ assert \
+ assert-perr \
+ # routines
tests := test-assert test-assert-perr tst-assert-c++ tst-assert-g++
ifeq ($(have-cxx-thread_local),yes)
diff --git a/assert/__libc_assert_fail.c b/assert/__libc_assert_fail.c
new file mode 100644
index 0000000000000000..149d5feae12f4af8
--- /dev/null
+++ b/assert/__libc_assert_fail.c
@@ -0,0 +1,33 @@
+/* libc-internal assert that calls __libc_message.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <_itoa.h>
+#include <array_length.h>
+#include <intprops.h>
+#include <stdio.h>
+
+void
+__libc_assert_fail (const char *assertion, const char *file, unsigned int line,
+ const char *function)
+{
+ char linebuf[INT_BUFSIZE_BOUND (unsigned int)];
+ array_end (linebuf)[-1] = '\0';
+ char *linestr = _itoa_word (line, array_end (linebuf) - 1, 10, 0);
+ __libc_message ("Fatal glibc error: %s:%s (%s): assertion failed: %s\n",
+ file, linestr, function, assertion);
+}
diff --git a/assert/assert.c b/assert/assert.c
index 8a277dce008b3495..989126c7e5b6b265 100644
--- a/assert/assert.c
+++ b/assert/assert.c
@@ -101,4 +101,3 @@ __assert_fail (const char *assertion, const char *file, unsigned int line,
__assert_fail_base (_("%s%s%s:%u: %s%sAssertion `%s' failed.\n%n"),
assertion, file, line, function);
}
-hidden_def(__assert_fail)
diff --git a/elf/Makefile b/elf/Makefile
index 613d244e7781d479..2b547d5b58f1759b 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -1158,6 +1158,7 @@ $(objpfx)dl-allobjs.os: $(all-rtld-routines:%=$(objpfx)%.os)
rtld-stubbed-symbols = \
__GI___pthread_disable_asynccancel \
__GI___pthread_enable_asynccancel \
+ __libc_assert_fail \
__pthread_disable_asynccancel \
__pthread_enable_asynccancel \
calloc \
diff --git a/include/assert.h b/include/assert.h
index 61cc8aa22ff4b913..c812808f9b767964 100644
--- a/include/assert.h
+++ b/include/assert.h
@@ -20,8 +20,14 @@ extern void __assert_fail_base (const char *fmt, const char *assertion,
const char *function)
__THROW __attribute__ ((__noreturn__)) attribute_hidden;
-# if IS_IN (libc) || (IS_IN (rtld) && !defined NO_RTLD_HIDDEN)
-hidden_proto (__assert_fail)
-hidden_proto (__assert_perror_fail)
+rtld_hidden_proto (__assert_fail)
+rtld_hidden_proto (__assert_perror_fail)
+libc_hidden_proto (__assert_perror_fail)
+
+
+# if IS_IN (libc)
+/* Redirect to the internal version which does not use stderr. */
+extern _Noreturn __typeof (__assert_fail) __libc_assert_fail attribute_hidden;
+# define __assert_fail __libc_assert_fail
# endif
#endif
diff --git a/malloc/malloc.c b/malloc/malloc.c
index 918e7936f1983437..2edb469d5dbf1203 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -289,22 +289,6 @@
#define MALLOC_DEBUG 0
#endif
-#if IS_IN (libc)
-#ifndef NDEBUG
-# define __assert_fail(assertion, file, line, function) \
- __malloc_assert(assertion, file, line, function)
-
-_Noreturn static void
-__malloc_assert (const char *assertion, const char *file, unsigned int line,
- const char *function)
-{
- __libc_message ("Fatal glibc error: malloc assertion failure in %s: %s\n",
- function, assertion);
- __builtin_unreachable ();
-}
-#endif
-#endif
-
#if USE_TCACHE
/* We want 64 entries. This is an arbitrary limit, which tunables can reduce. */
# define TCACHE_MAX_BINS 64
diff --git a/stdlib/tst-bz20544.c b/stdlib/tst-bz20544.c
index 4aa5793b8994d1f6..1337a3952c30e517 100644
--- a/stdlib/tst-bz20544.c
+++ b/stdlib/tst-bz20544.c
@@ -78,7 +78,7 @@ test_bz20544_cxa_at_quick_exit (void *closure)
static void
test_one_fn (void (*test_fn) (void *))
{
- const char expected_error[] = "Assertion `func != NULL' failed.\n";
+ const char expected_error[] = "assertion failed: func != NULL\n";
struct support_capture_subprocess result;
result = support_capture_subprocess (test_fn, NULL);
support_capture_subprocess_check (&result, "bz20544", -SIGABRT,

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SOURCES/glibc-rh2117712-4.patch
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commit 8fabe0e632bd441c760f878d1022c378f04f8497
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Aug 4 06:17:50 2022 +0200
Linux: Remove exit system call from _exit
exit only terminates the current thread, not the whole process, so it
is the wrong fallback system call in this context. All supported
Linux versions implement the exit_group system call anyway.
diff --git a/sysdeps/unix/sysv/linux/_exit.c b/sysdeps/unix/sysv/linux/_exit.c
index 2f0ec35459f25314..cd1270ac9b2b5b2b 100644
--- a/sysdeps/unix/sysv/linux/_exit.c
+++ b/sysdeps/unix/sysv/linux/_exit.c
@@ -28,7 +28,6 @@ _exit (int status)
while (1)
{
INLINE_SYSCALL (exit_group, 1, status);
- INLINE_SYSCALL (exit, 1, status);
#ifdef ABORT_INSTRUCTION
ABORT_INSTRUCTION;

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SOURCES/glibc-rh2117712-5.patch
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Very limited backport of the following upstream commit, to obtain
the definition of __getrandom_nocancel.
commit 6f4e0fcfa2d2b0915816a3a3a1d48b4763a7dee2
Author: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
Date: Thu Jul 21 10:04:59 2022 -0300
stdlib: Add arc4random, arc4random_buf, and arc4random_uniform (BZ #4417)
With the INTERNAL_SYSCALL_CALL change from this patch already applied:
commit 609c9d0951da387cd523b5db42a82d38dabc37c4
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Thu Sep 29 16:18:06 2022 -0300
malloc: Do not clobber errno on __getrandom_nocancel (BZ #29624)
Use INTERNAL_SYSCALL_CALL instead of INLINE_SYSCALL_CALL. This
requires emulate the semantic for hurd call (so __arc4random_buf
uses the fallback).
Checked on x86_64-linux-gnu.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
diff --git a/sysdeps/generic/not-cancel.h b/sysdeps/generic/not-cancel.h
index 8a3772a1fe66271e..14188041c2c0ad57 100644
--- a/sysdeps/generic/not-cancel.h
+++ b/sysdeps/generic/not-cancel.h
@@ -49,5 +49,7 @@
(void) __writev (fd, iov, n)
#define __fcntl64_nocancel(fd, cmd, ...) \
__fcntl64 (fd, cmd, __VA_ARGS__)
+#define __getrandom_nocancel(buf, size, flags) \
+ __getrandom (buf, size, flags)
#endif /* NOT_CANCEL_H */
diff --git a/sysdeps/mach/hurd/not-cancel.h b/sysdeps/mach/hurd/not-cancel.h
index cd320cb721e6ff7e..7a3d2cc3532cf866 100644
--- a/sysdeps/mach/hurd/not-cancel.h
+++ b/sysdeps/mach/hurd/not-cancel.h
@@ -75,6 +75,9 @@ __typeof (__fcntl) __fcntl_nocancel;
#define __fcntl64_nocancel(...) \
__fcntl_nocancel (__VA_ARGS__)
+#define __getrandom_nocancel(buf, size, flags) \
+ __getrandom (buf, size, flags)
+
#if IS_IN (libc)
hidden_proto (__close_nocancel)
hidden_proto (__close_nocancel_nostatus)
diff --git a/sysdeps/unix/sysv/linux/not-cancel.h b/sysdeps/unix/sysv/linux/not-cancel.h
index f06d57426a40227e..d2bb59acddbcfee0 100644
--- a/sysdeps/unix/sysv/linux/not-cancel.h
+++ b/sysdeps/unix/sysv/linux/not-cancel.h
@@ -68,6 +68,13 @@ __writev_nocancel_nostatus (int fd, const struct iovec *iov, int iovcnt)
INTERNAL_SYSCALL_CALL (writev, fd, iov, iovcnt);
}
+static inline int
+__getrandom_nocancel (void *buf, size_t buflen, unsigned int flags)
+{
+ return INTERNAL_SYSCALL_CALL (getrandom, buf, buflen, flags);
+}
+
+
/* Uncancelable fcntl. */
__typeof (__fcntl) __fcntl64_nocancel;

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SOURCES/glibc-rh2117712-6.patch
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commit 7187efd0aa270c83c428ea6cd0e1cffc34b41a74
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Aug 1 15:49:07 2022 +0200
malloc: Use __getrandom_nocancel during tcache initiailization
Cancellation currently cannot happen at this point because dlopen
as used by the unwind link always performs additional allocations
for libgcc_s.so.1, even if it has been loaded already as a dependency
of the main executable. But it seems prudent not to rely on this
quirk.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
diff --git a/malloc/malloc.c b/malloc/malloc.c
index 2edb469d5dbf1203..375f50f5db13e234 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -256,6 +256,7 @@
/* For tcache double-free check. */
#include <random-bits.h>
#include <sys/random.h>
+#include <not-cancel.h>
/*
Debugging:
@@ -3025,7 +3026,7 @@ static uintptr_t tcache_key;
static void
tcache_key_initialize (void)
{
- if (__getrandom (&tcache_key, sizeof(tcache_key), GRND_NONBLOCK)
+ if (__getrandom_nocancel (&tcache_key, sizeof(tcache_key), GRND_NONBLOCK)
!= sizeof (tcache_key))
{
tcache_key = random_bits ();

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SOURCES/glibc-rh2118666.patch
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commit dd2315a866a4ac2b838ea1cb10c5ea1c35d51a2f
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 16 08:27:50 2022 +0200
elf: Run tst-audit-tlsdesc, tst-audit-tlsdesc-dlopen everywhere
The test is valid for all TLS models, but we want to make a reasonable
effort to test the GNU2 model specifically. For example, aarch64
defaults to GNU2, but does not have -mtls-dialect=gnu2, and the test
was not run there.
Suggested-by: Martin Coufal <mcoufal@redhat.com>
Conflicts:
elf/Makefile
(missing tst-align3 test downstream)
diff --git a/elf/Makefile b/elf/Makefile
index ea1512549be3f628..613d244e7781d479 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -361,6 +361,8 @@ tests += \
tst-addr1 \
tst-align \
tst-align2 \
+ tst-audit-tlsdesc \
+ tst-audit-tlsdesc-dlopen \
tst-audit1 \
tst-audit2 \
tst-audit8 \
@@ -679,6 +681,8 @@ modules-names = \
tst-alignmod2 \
tst-array2dep \
tst-array5dep \
+ tst-audit-tlsdesc-mod1 \
+ tst-audit-tlsdesc-mod2 \
tst-audit11mod1 \
tst-audit11mod2 \
tst-audit12mod1 \
@@ -712,6 +716,7 @@ modules-names = \
tst-auditmanymod7 \
tst-auditmanymod8 \
tst-auditmanymod9 \
+ tst-auditmod-tlsdesc \
tst-auditmod1 \
tst-auditmod9a \
tst-auditmod9b \
@@ -889,23 +894,8 @@ modules-names += tst-gnu2-tls1mod
$(objpfx)tst-gnu2-tls1: $(objpfx)tst-gnu2-tls1mod.so
tst-gnu2-tls1mod.so-no-z-defs = yes
CFLAGS-tst-gnu2-tls1mod.c += -mtls-dialect=gnu2
+endif # $(have-mtls-dialect-gnu2)
-tests += tst-audit-tlsdesc tst-audit-tlsdesc-dlopen
-modules-names += tst-audit-tlsdesc-mod1 tst-audit-tlsdesc-mod2 tst-auditmod-tlsdesc
-$(objpfx)tst-audit-tlsdesc: $(objpfx)tst-audit-tlsdesc-mod1.so \
- $(objpfx)tst-audit-tlsdesc-mod2.so \
- $(shared-thread-library)
-CFLAGS-tst-audit-tlsdesc-mod1.c += -mtls-dialect=gnu2
-CFLAGS-tst-audit-tlsdesc-mod2.c += -mtls-dialect=gnu2
-$(objpfx)tst-audit-tlsdesc-dlopen: $(shared-thread-library)
-$(objpfx)tst-audit-tlsdesc-dlopen.out: $(objpfx)tst-audit-tlsdesc-mod1.so \
- $(objpfx)tst-audit-tlsdesc-mod2.so
-$(objpfx)tst-audit-tlsdesc-mod1.so: $(objpfx)tst-audit-tlsdesc-mod2.so
-$(objpfx)tst-audit-tlsdesc.out: $(objpfx)tst-auditmod-tlsdesc.so
-tst-audit-tlsdesc-ENV = LD_AUDIT=$(objpfx)tst-auditmod-tlsdesc.so
-$(objpfx)tst-audit-tlsdesc-dlopen.out: $(objpfx)tst-auditmod-tlsdesc.so
-tst-audit-tlsdesc-dlopen-ENV = LD_AUDIT=$(objpfx)tst-auditmod-tlsdesc.so
-endif
ifeq (yes,$(have-protected-data))
modules-names += tst-protected1moda tst-protected1modb
tests += tst-protected1a tst-protected1b
@@ -2656,3 +2646,21 @@ $(objpfx)tst-tls-allocation-failure-static-patched.out: \
grep -q '^Fatal glibc error: Cannot allocate TLS block$$' $@ \
&& grep -q '^status: 127$$' $@; \
$(evaluate-test)
+
+$(objpfx)tst-audit-tlsdesc: $(objpfx)tst-audit-tlsdesc-mod1.so \
+ $(objpfx)tst-audit-tlsdesc-mod2.so \
+ $(shared-thread-library)
+ifeq (yes,$(have-mtls-dialect-gnu2))
+# The test is valid for all TLS types, but we want to exercise GNU2
+# TLS if possible.
+CFLAGS-tst-audit-tlsdesc-mod1.c += -mtls-dialect=gnu2
+CFLAGS-tst-audit-tlsdesc-mod2.c += -mtls-dialect=gnu2
+endif
+$(objpfx)tst-audit-tlsdesc-dlopen: $(shared-thread-library)
+$(objpfx)tst-audit-tlsdesc-dlopen.out: $(objpfx)tst-audit-tlsdesc-mod1.so \
+ $(objpfx)tst-audit-tlsdesc-mod2.so
+$(objpfx)tst-audit-tlsdesc-mod1.so: $(objpfx)tst-audit-tlsdesc-mod2.so
+$(objpfx)tst-audit-tlsdesc.out: $(objpfx)tst-auditmod-tlsdesc.so
+tst-audit-tlsdesc-ENV = LD_AUDIT=$(objpfx)tst-auditmod-tlsdesc.so
+$(objpfx)tst-audit-tlsdesc-dlopen.out: $(objpfx)tst-auditmod-tlsdesc.so
+tst-audit-tlsdesc-dlopen-ENV = LD_AUDIT=$(objpfx)tst-auditmod-tlsdesc.so

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commit 183d99737298bb3200f0610fdcd1c7549c8ed560
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Sep 6 07:38:10 2022 +0200
scripts/dso-ordering-test.py: Generate program run-time dependencies
The main program needs to depend on all shared objects, even objects
that have link-time dependencies among shared objects. Filtering
out shared objects that already have an link-time dependencies is not
necessary here; make will do this automatically.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
diff --git a/scripts/dso-ordering-test.py b/scripts/dso-ordering-test.py
index bde0406be9da14fc..4ffcff6136145ef1 100644
--- a/scripts/dso-ordering-test.py
+++ b/scripts/dso-ordering-test.py
@@ -707,13 +707,12 @@ def process_testcase(t):
"\t$(compile.c) $(OUTPUT_OPTION)\n")
makefile.write (rule)
- not_depended_objs = find_objs_not_depended_on(test_descr)
- if not_depended_objs:
- depstr = ""
- for dep in not_depended_objs:
- depstr += (" $(objpfx)" + test_subdir + "/"
- + test_name + "-" + dep + ".so")
- makefile.write("$(objpfx)%s.out:%s\n" % (base_test_name, depstr))
+ # Ensure that all shared objects are built before running the
+ # test, whether there link-time dependencies or not.
+ depobjs = ["$(objpfx){}/{}-{}.so".format(test_subdir, test_name, dep)
+ for dep in test_descr.objs]
+ makefile.write("$(objpfx){}.out: {}\n".format(
+ base_test_name, " ".join(depobjs)))
# Add main executable to test-srcs
makefile.write("test-srcs += %s/%s\n" % (test_subdir, test_name))

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commit dbb75513f5cf9285c77c9e55777c5c35b653f890
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Sep 6 07:38:10 2022 +0200
elf: Rename _dl_sort_maps parameter from skip to force_first
The new implementation will not be able to skip an arbitrary number
of objects.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
diff --git a/elf/dl-sort-maps.c b/elf/dl-sort-maps.c
index 72f4ff0e6eda3377..7c614bca5d8115c6 100644
--- a/elf/dl-sort-maps.c
+++ b/elf/dl-sort-maps.c
@@ -27,12 +27,12 @@
If FOR_FINI is true, this is called for finishing an object. */
static void
_dl_sort_maps_original (struct link_map **maps, unsigned int nmaps,
- unsigned int skip, bool for_fini)
+ bool force_first, bool for_fini)
{
/* Allows caller to do the common optimization of skipping the first map,
usually the main binary. */
- maps += skip;
- nmaps -= skip;
+ maps += force_first;
+ nmaps -= force_first;
/* A list of one element need not be sorted. */
if (nmaps <= 1)
@@ -182,7 +182,7 @@ dfs_traversal (struct link_map ***rpo, struct link_map *map,
static void
_dl_sort_maps_dfs (struct link_map **maps, unsigned int nmaps,
- unsigned int skip __attribute__ ((unused)), bool for_fini)
+ bool force_first __attribute__ ((unused)), bool for_fini)
{
for (int i = nmaps - 1; i >= 0; i--)
maps[i]->l_visited = 0;
@@ -286,7 +286,7 @@ _dl_sort_maps_init (void)
void
_dl_sort_maps (struct link_map **maps, unsigned int nmaps,
- unsigned int skip, bool for_fini)
+ bool force_first, bool for_fini)
{
/* It can be tempting to use a static function pointer to store and call
the current selected sorting algorithm routine, but experimentation
@@ -296,9 +296,9 @@ _dl_sort_maps (struct link_map **maps, unsigned int nmaps,
input cases. A simple if-case with direct function calls appears to
be the fastest. */
if (__glibc_likely (GLRO(dl_dso_sort_algo) == dso_sort_algorithm_original))
- _dl_sort_maps_original (maps, nmaps, skip, for_fini);
+ _dl_sort_maps_original (maps, nmaps, force_first, for_fini);
else
- _dl_sort_maps_dfs (maps, nmaps, skip, for_fini);
+ _dl_sort_maps_dfs (maps, nmaps, force_first, for_fini);
}
#endif /* HAVE_TUNABLES. */
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index 87ad2f3f4d89eb7d..8c0fe98f69a88f1e 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -1106,9 +1106,11 @@ extern void _dl_init (struct link_map *main_map, int argc, char **argv,
initializer functions have completed. */
extern void _dl_fini (void) attribute_hidden;
-/* Sort array MAPS according to dependencies of the contained objects. */
+/* Sort array MAPS according to dependencies of the contained objects.
+ If FORCE_FIRST, MAPS[0] keeps its place even if the dependencies
+ say otherwise. */
extern void _dl_sort_maps (struct link_map **maps, unsigned int nmaps,
- unsigned int skip, bool for_fini) attribute_hidden;
+ bool force_first, bool for_fini) attribute_hidden;
/* The dynamic linker calls this function before and having changing
any shared object mappings. The `r_state' member of `struct r_debug'

90
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commit 1df71d32fe5f5905ffd5d100e5e9ca8ad6210891
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Sep 20 11:00:42 2022 +0200
elf: Implement force_first handling in _dl_sort_maps_dfs (bug 28937)
The implementation in _dl_close_worker requires that the first
element of l_initfini is always this very map (“We are always the
zeroth entry, and since we don't include ourselves in the
dependency analysis start at 1.”). Rather than fixing that
assumption, this commit adds an implementation of the force_first
argument to the new dependency sorting algorithm. This also means
that the directly dlopen'ed shared object is always initialized last,
which is the least surprising behavior in the presence of cycles.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
diff --git a/elf/dl-sort-maps.c b/elf/dl-sort-maps.c
index 7c614bca5d8115c6..e8ef5e8b3588ab53 100644
--- a/elf/dl-sort-maps.c
+++ b/elf/dl-sort-maps.c
@@ -182,8 +182,9 @@ dfs_traversal (struct link_map ***rpo, struct link_map *map,
static void
_dl_sort_maps_dfs (struct link_map **maps, unsigned int nmaps,
- bool force_first __attribute__ ((unused)), bool for_fini)
+ bool force_first, bool for_fini)
{
+ struct link_map *first_map = maps[0];
for (int i = nmaps - 1; i >= 0; i--)
maps[i]->l_visited = 0;
@@ -208,14 +209,6 @@ _dl_sort_maps_dfs (struct link_map **maps, unsigned int nmaps,
Adjusting the order so that maps[0] is last traversed naturally avoids
this problem.
- Further, the old "optimization" of skipping the main object at maps[0]
- from the call-site (i.e. _dl_sort_maps(maps+1,nmaps-1)) is in general
- no longer valid, since traversing along object dependency-links
- may "find" the main object even when it is not included in the initial
- order (e.g. a dlopen()'ed shared object can have circular dependencies
- linked back to itself). In such a case, traversing N-1 objects will
- create a N-object result, and raise problems.
-
To summarize, just passing in the full list, and iterating from back
to front makes things much more straightforward. */
@@ -274,6 +267,27 @@ _dl_sort_maps_dfs (struct link_map **maps, unsigned int nmaps,
}
memcpy (maps, rpo, sizeof (struct link_map *) * nmaps);
+
+ /* Skipping the first object at maps[0] is not valid in general,
+ since traversing along object dependency-links may "find" that
+ first object even when it is not included in the initial order
+ (e.g., a dlopen'ed shared object can have circular dependencies
+ linked back to itself). In such a case, traversing N-1 objects
+ will create a N-object result, and raise problems. Instead,
+ force the object back into first place after sorting. This naive
+ approach may introduce further dependency ordering violations
+ compared to rotating the cycle until the first map is again in
+ the first position, but as there is a cycle, at least one
+ violation is already present. */
+ if (force_first && maps[0] != first_map)
+ {
+ int i;
+ for (i = 0; maps[i] != first_map; ++i)
+ ;
+ assert (i < nmaps);
+ memmove (&maps[1], maps, i * sizeof (maps[0]));
+ maps[0] = first_map;
+ }
}
void
diff --git a/elf/dso-sort-tests-1.def b/elf/dso-sort-tests-1.def
index 5f7f18ef270bc12d..4bf9052db16fb352 100644
--- a/elf/dso-sort-tests-1.def
+++ b/elf/dso-sort-tests-1.def
@@ -64,3 +64,10 @@ output: b>a>{}<a<b
tst-bz15311: {+a;+e;+f;+g;+d;%d;-d;-g;-f;-e;-a};a->b->c->d;d=>[ba];c=>a;b=>e=>a;c=>f=>b;d=>g=>c
output(glibc.rtld.dynamic_sort=1): {+a[d>c>b>a>];+e[e>];+f[f>];+g[g>];+d[];%d(b(e(a()))a()g(c(a()f(b(e(a()))))));-d[];-g[];-f[];-e[];-a[<a<c<d<g<f<b<e];}
output(glibc.rtld.dynamic_sort=2): {+a[d>c>b>a>];+e[e>];+f[f>];+g[g>];+d[];%d(b(e(a()))a()g(c(a()f(b(e(a()))))));-d[];-g[];-f[];-e[];-a[<g<f<a<b<c<d<e];}
+
+# Test that even in the presence of dependency loops involving dlopen'ed
+# object, that object is initialized last (and not unloaded prematurely).
+# Final destructor order is indeterminate due to the cycle.
+tst-bz28937: {+a;+b;-b;+c;%c};a->a1;a->a2;a2->a;b->b1;c->a1;c=>a1
+output(glibc.rtld.dynamic_sort=1): {+a[a2>a1>a>];+b[b1>b>];-b[<b<b1];+c[c>];%c(a1());}<a<a2<c<a1
+output(glibc.rtld.dynamic_sort=2): {+a[a2>a1>a>];+b[b1>b>];-b[<b<b1];+c[c>];%c(a1());}<a2<a<c<a1

589
SOURCES/glibc-rh2129005.patch
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@ -0,0 +1,589 @@
commit 1d495912a746e2a1ffb780c9a81fd234ec2464e8
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
nss_dns: Rewrite _nss_dns_gethostbyname4_r using current interfaces
Introduce struct alloc_buffer to this function, and use it and
struct ns_rr_cursor in gaih_getanswer_slice. Adjust gaih_getanswer
and gaih_getanswer_noaaaa accordingly.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index 1cb3be71f04d98eb..36789965c06757d0 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -101,13 +101,6 @@
#endif
#define MAXHOSTNAMELEN 256
-/* We need this time later. */
-typedef union querybuf
-{
- HEADER hdr;
- u_char buf[MAXPACKET];
-} querybuf;
-
/* For historic reasons, pointers to IP addresses are char *, so use a
single list type for addresses and host names. */
#define DYNARRAY_STRUCT ptrlist
@@ -126,18 +119,18 @@ static enum nss_status getanswer_ptr (unsigned char *packet, size_t packetlen,
char **hnamep, int *errnop,
int *h_errnop, int32_t *ttlp);
-static enum nss_status gaih_getanswer (const querybuf *answer1, int anslen1,
- const querybuf *answer2, int anslen2,
- const char *qname,
+static enum nss_status gaih_getanswer (unsigned char *packet1,
+ size_t packet1len,
+ unsigned char *packet2,
+ size_t packet2len,
+ struct alloc_buffer *abuf,
struct gaih_addrtuple **pat,
- char *buffer, size_t buflen,
int *errnop, int *h_errnop,
int32_t *ttlp);
-static enum nss_status gaih_getanswer_noaaaa (const querybuf *answer1,
- int anslen1,
- const char *qname,
+static enum nss_status gaih_getanswer_noaaaa (unsigned char *packet,
+ size_t packetlen,
+ struct alloc_buffer *abuf,
struct gaih_addrtuple **pat,
- char *buffer, size_t buflen,
int *errnop, int *h_errnop,
int32_t *ttlp);
@@ -409,17 +402,13 @@ _nss_dns_gethostbyname4_r (const char *name, struct gaih_addrtuple **pat,
name = cp;
}
- union
- {
- querybuf *buf;
- u_char *ptr;
- } host_buffer;
- querybuf *orig_host_buffer;
- host_buffer.buf = orig_host_buffer = (querybuf *) alloca (2048);
+ unsigned char dns_packet_buffer[2048];
+ unsigned char *alt_dns_packet_buffer = dns_packet_buffer;
u_char *ans2p = NULL;
int nans2p = 0;
int resplen2 = 0;
int ans2p_malloced = 0;
+ struct alloc_buffer abuf = alloc_buffer_create (buffer, buflen);
int olderr = errno;
@@ -428,22 +417,21 @@ _nss_dns_gethostbyname4_r (const char *name, struct gaih_addrtuple **pat,
if ((ctx->resp->options & RES_NOAAAA) == 0)
{
n = __res_context_search (ctx, name, C_IN, T_QUERY_A_AND_AAAA,
- host_buffer.buf->buf, 2048, &host_buffer.ptr,
- &ans2p, &nans2p, &resplen2, &ans2p_malloced);
+ dns_packet_buffer, sizeof (dns_packet_buffer),
+ &alt_dns_packet_buffer, &ans2p, &nans2p,
+ &resplen2, &ans2p_malloced);
if (n >= 0)
- status = gaih_getanswer (host_buffer.buf, n, (const querybuf *) ans2p,
- resplen2, name, pat, buffer, buflen,
- errnop, herrnop, ttlp);
+ status = gaih_getanswer (alt_dns_packet_buffer, n, ans2p, resplen2,
+ &abuf, pat, errnop, herrnop, ttlp);
}
else
{
n = __res_context_search (ctx, name, C_IN, T_A,
- host_buffer.buf->buf, 2048, NULL,
- NULL, NULL, NULL, NULL);
+ dns_packet_buffer, sizeof (dns_packet_buffer),
+ NULL, NULL, NULL, NULL, NULL);
if (n >= 0)
- status = gaih_getanswer_noaaaa (host_buffer.buf, n,
- name, pat, buffer, buflen,
- errnop, herrnop, ttlp);
+ status = gaih_getanswer_noaaaa (alt_dns_packet_buffer, n,
+ &abuf, pat, errnop, herrnop, ttlp);
}
if (n < 0)
{
@@ -474,12 +462,20 @@ _nss_dns_gethostbyname4_r (const char *name, struct gaih_addrtuple **pat,
__set_errno (olderr);
}
+ /* Implement the buffer resizing protocol. */
+ if (alloc_buffer_has_failed (&abuf))
+ {
+ *errnop = ERANGE;
+ *herrnop = NETDB_INTERNAL;
+ status = NSS_STATUS_TRYAGAIN;
+ }
+
/* Check whether ans2p was separately allocated. */
if (ans2p_malloced)
free (ans2p);
- if (host_buffer.buf != orig_host_buffer)
- free (host_buffer.buf);
+ if (alt_dns_packet_buffer != dns_packet_buffer)
+ free (alt_dns_packet_buffer);
__resolv_context_put (ctx);
return status;
@@ -893,259 +889,152 @@ getanswer_ptr (unsigned char *packet, size_t packetlen,
return NSS_STATUS_TRYAGAIN;
}
+/* Parses DNS data found in PACKETLEN bytes at PACKET in struct
+ gaih_addrtuple address tuples. The new address tuples are linked
+ from **TAILP, with backing store allocated from ABUF, and *TAILP is
+ updated to point where the next tuple pointer should be stored. If
+ TTLP is not null, *TTLP is updated to reflect the minimum TTL. If
+ STORE_CANON is true, the canonical name is stored as part of the
+ first address tuple being written. */
static enum nss_status
-gaih_getanswer_slice (const querybuf *answer, int anslen, const char *qname,
- struct gaih_addrtuple ***patp,
- char **bufferp, size_t *buflenp,
- int *errnop, int *h_errnop, int32_t *ttlp, int *firstp)
+gaih_getanswer_slice (unsigned char *packet, size_t packetlen,
+ struct alloc_buffer *abuf,
+ struct gaih_addrtuple ***tailp,
+ int *errnop, int *h_errnop, int32_t *ttlp,
+ bool store_canon)
{
- char *buffer = *bufferp;
- size_t buflen = *buflenp;
-
- struct gaih_addrtuple **pat = *patp;
- const HEADER *hp = &answer->hdr;
- int ancount = ntohs (hp->ancount);
- int qdcount = ntohs (hp->qdcount);
- const u_char *cp = answer->buf + HFIXEDSZ;
- const u_char *end_of_message = answer->buf + anslen;
- if (__glibc_unlikely (qdcount != 1))
- {
- *h_errnop = NO_RECOVERY;
- return NSS_STATUS_UNAVAIL;
- }
-
- u_char packtmp[NS_MAXCDNAME];
- int n = __ns_name_unpack (answer->buf, end_of_message, cp,
- packtmp, sizeof packtmp);
- /* We unpack the name to check it for validity. But we do not need
- it later. */
- if (n != -1 && __ns_name_ntop (packtmp, buffer, buflen) == -1)
- {
- if (__glibc_unlikely (errno == EMSGSIZE))
- {
- too_small:
- *errnop = ERANGE;
- *h_errnop = NETDB_INTERNAL;
- return NSS_STATUS_TRYAGAIN;
- }
-
- n = -1;
- }
-
- if (__glibc_unlikely (n < 0))
- {
- *errnop = errno;
- *h_errnop = NO_RECOVERY;
- return NSS_STATUS_UNAVAIL;
- }
- if (__glibc_unlikely (__libc_res_hnok (buffer) == 0))
+ struct ns_rr_cursor c;
+ if (!__ns_rr_cursor_init (&c, packet, packetlen))
{
- errno = EBADMSG;
- *errnop = EBADMSG;
+ /* This should not happen because __res_context_query already
+ perfroms response validation. */
*h_errnop = NO_RECOVERY;
return NSS_STATUS_UNAVAIL;
}
- cp += n + QFIXEDSZ;
+ bool haveanswer = false; /* Set to true if at least one address. */
+ uint16_t qtype = ns_rr_cursor_qtype (&c);
+ int ancount = ns_rr_cursor_ancount (&c);
+ const unsigned char *expected_name = ns_rr_cursor_qname (&c);
+ /* expected_name may be updated to point into this buffer. */
+ unsigned char name_buffer[NS_MAXCDNAME];
- int haveanswer = 0;
- int had_error = 0;
- char *canon = NULL;
- char *h_name = NULL;
- int h_namelen = 0;
+ /* This is a pointer to a possibly-compressed name in the packet.
+ Eventually it is equivalent to the canonical name. If needed, it
+ is uncompressed and translated to text form when the first
+ address tuple is encountered. */
+ const unsigned char *compressed_alias_name = expected_name;
- if (ancount == 0)
+ if (ancount == 0 || !__res_binary_hnok (compressed_alias_name))
{
*h_errnop = HOST_NOT_FOUND;
return NSS_STATUS_NOTFOUND;
}
- while (ancount-- > 0 && cp < end_of_message && had_error == 0)
+ for (; ancount > -0; --ancount)
{
- n = __ns_name_unpack (answer->buf, end_of_message, cp,
- packtmp, sizeof packtmp);
- if (n != -1 &&
- (h_namelen = __ns_name_ntop (packtmp, buffer, buflen)) == -1)
- {
- if (__glibc_unlikely (errno == EMSGSIZE))
- goto too_small;
-
- n = -1;
- }
- if (__glibc_unlikely (n < 0))
- {
- ++had_error;
- continue;
- }
- if (*firstp && canon == NULL && __libc_res_hnok (buffer))
- {
- h_name = buffer;
- buffer += h_namelen;
- buflen -= h_namelen;
- }
-
- cp += n; /* name */
-
- if (__glibc_unlikely (cp + 10 > end_of_message))
- {
- ++had_error;
- continue;
- }
-
- uint16_t type;
- NS_GET16 (type, cp);
- uint16_t class;
- NS_GET16 (class, cp);
- int32_t ttl;
- NS_GET32 (ttl, cp);
- NS_GET16 (n, cp); /* RDATA length. */
-
- if (end_of_message - cp < n)
+ struct ns_rr_wire rr;
+ if (!__ns_rr_cursor_next (&c, &rr))
{
- /* RDATA extends beyond the end of the packet. */
- ++had_error;
- continue;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
}
- if (class != C_IN)
- {
- cp += n;
- continue;
- }
+ /* Update TTL for known record types. */
+ if ((rr.rtype == T_CNAME || rr.rtype == qtype)
+ && ttlp != NULL && *ttlp > rr.ttl)
+ *ttlp = rr.ttl;
- if (type == T_CNAME)
+ if (rr.rtype == T_CNAME)
{
- char tbuf[MAXDNAME];
-
- /* A CNAME could also have a TTL entry. */
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
-
- n = __libc_dn_expand (answer->buf, end_of_message, cp,
- tbuf, sizeof tbuf);
- if (__glibc_unlikely (n < 0))
- {
- ++had_error;
- continue;
- }
- cp += n;
-
- if (*firstp && __libc_res_hnok (tbuf))
+ /* NB: No check for owner name match, based on historic
+ precedent. Record the CNAME target as the new expected
+ name. */
+ int n = __ns_name_unpack (c.begin, c.end, rr.rdata,
+ name_buffer, sizeof (name_buffer));
+ if (n < 0)
{
- /* Reclaim buffer space. */
- if (h_name + h_namelen == buffer)
- {
- buffer = h_name;
- buflen += h_namelen;
- }
-
- n = strlen (tbuf) + 1;
- if (__glibc_unlikely (n > buflen))
- goto too_small;
- if (__glibc_unlikely (n >= MAXHOSTNAMELEN))
- {
- ++had_error;
- continue;
- }
-
- canon = buffer;
- buffer = __mempcpy (buffer, tbuf, n);
- buflen -= n;
- h_namelen = 0;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
}
- continue;
+ expected_name = name_buffer;
+ if (store_canon && __res_binary_hnok (name_buffer))
+ /* This name can be used as a canonical name. Do not
+ translate to text form here to conserve buffer space.
+ Point to the compressed name because name_buffer can be
+ overwritten with an unusable name later. */
+ compressed_alias_name = rr.rdata;
}
-
- /* Stop parsing if we encounter a record with incorrect RDATA
- length. */
- if (type == T_A || type == T_AAAA)
+ else if (rr.rtype == qtype
+ && __ns_samebinaryname (rr.rname, expected_name)
+ && rr.rdlength == rrtype_to_rdata_length (qtype))
{
- if (n != rrtype_to_rdata_length (type))
+ struct gaih_addrtuple *ntup
+ = alloc_buffer_alloc (abuf, struct gaih_addrtuple);
+ /* Delay error reporting to the callers (they implement the
+ ERANGE buffer resizing handshake). */
+ if (ntup != NULL)
{
- ++had_error;
- continue;
+ ntup->next = NULL;
+ if (store_canon && compressed_alias_name != NULL)
+ {
+ /* This assumes that all the CNAME records come
+ first. Use MAXHOSTNAMELEN instead of
+ NS_MAXCDNAME for additional length checking.
+ However, these checks are not expected to fail
+ because all size NS_MAXCDNAME names should into
+ the hname buffer because no escaping is
+ needed. */
+ char unsigned nbuf[NS_MAXCDNAME];
+ char hname[MAXHOSTNAMELEN + 1];
+ if (__ns_name_unpack (c.begin, c.end,
+ compressed_alias_name,
+ nbuf, sizeof (nbuf)) >= 0
+ && __ns_name_ntop (nbuf, hname, sizeof (hname)) >= 0)
+ /* Space checking is performed by the callers. */
+ ntup->name = alloc_buffer_copy_string (abuf, hname);
+ store_canon = false;
+ }
+ else
+ ntup->name = NULL;
+ if (rr.rdlength == 4)
+ ntup->family = AF_INET;
+ else
+ ntup->family = AF_INET6;
+ memcpy (ntup->addr, rr.rdata, rr.rdlength);
+ ntup->scopeid = 0;
+
+ /* Link in the new tuple, and update the tail pointer to
+ point to its next field. */
+ **tailp = ntup;
+ *tailp = &ntup->next;
+
+ haveanswer = true;
}
}
- else
- {
- /* Skip unknown records. */
- cp += n;
- continue;
- }
-
- assert (type == T_A || type == T_AAAA);
- if (*pat == NULL)
- {
- uintptr_t pad = (-(uintptr_t) buffer
- % __alignof__ (struct gaih_addrtuple));
- buffer += pad;
- buflen = buflen > pad ? buflen - pad : 0;
-
- if (__glibc_unlikely (buflen < sizeof (struct gaih_addrtuple)))
- goto too_small;
-
- *pat = (struct gaih_addrtuple *) buffer;
- buffer += sizeof (struct gaih_addrtuple);
- buflen -= sizeof (struct gaih_addrtuple);
- }
-
- (*pat)->name = NULL;
- (*pat)->next = NULL;
-
- if (*firstp)
- {
- /* We compose a single hostent out of the entire chain of
- entries, so the TTL of the hostent is essentially the lowest
- TTL in the chain. */
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
-
- (*pat)->name = canon ?: h_name;
-
- *firstp = 0;
- }
-
- (*pat)->family = type == T_A ? AF_INET : AF_INET6;
- memcpy ((*pat)->addr, cp, n);
- cp += n;
- (*pat)->scopeid = 0;
-
- pat = &((*pat)->next);
-
- haveanswer = 1;
}
if (haveanswer)
{
- *patp = pat;
- *bufferp = buffer;
- *buflenp = buflen;
-
*h_errnop = NETDB_SUCCESS;
return NSS_STATUS_SUCCESS;
}
-
- /* Special case here: if the resolver sent a result but it only
- contains a CNAME while we are looking for a T_A or T_AAAA record,
- we fail with NOTFOUND instead of TRYAGAIN. */
- if (canon != NULL)
+ else
{
+ /* Special case here: if the resolver sent a result but it only
+ contains a CNAME while we are looking for a T_A or T_AAAA
+ record, we fail with NOTFOUND. */
*h_errnop = HOST_NOT_FOUND;
return NSS_STATUS_NOTFOUND;
}
-
- *h_errnop = NETDB_INTERNAL;
- return NSS_STATUS_TRYAGAIN;
}
static enum nss_status
-gaih_getanswer (const querybuf *answer1, int anslen1, const querybuf *answer2,
- int anslen2, const char *qname,
- struct gaih_addrtuple **pat, char *buffer, size_t buflen,
+gaih_getanswer (unsigned char *packet1, size_t packet1len,
+ unsigned char *packet2, size_t packet2len,
+ struct alloc_buffer *abuf, struct gaih_addrtuple **pat,
int *errnop, int *h_errnop, int32_t *ttlp)
{
- int first = 1;
-
enum nss_status status = NSS_STATUS_NOTFOUND;
/* Combining the NSS status of two distinct queries requires some
@@ -1157,7 +1046,10 @@ gaih_getanswer (const querybuf *answer1, int anslen1, const querybuf *answer2,
between TRYAGAIN (recoverable) and TRYAGAIN' (not-recoverable).
A recoverable TRYAGAIN is almost always due to buffer size issues
and returns ERANGE in errno and the caller is expected to retry
- with a larger buffer.
+ with a larger buffer. (The caller, _nss_dns_gethostbyname4_r,
+ ignores the return status if it detects that the result buffer
+ has been exhausted and generates a TRYAGAIN failure with an
+ ERANGE code.)
Lastly, you may be tempted to make significant changes to the
conditions in this code to bring about symmetry between responses.
@@ -1237,36 +1129,30 @@ gaih_getanswer (const querybuf *answer1, int anslen1, const querybuf *answer2,
is a recoverable error we now return TRYAGIN even if the first
response was SUCCESS. */
- if (anslen1 > 0)
- status = gaih_getanswer_slice(answer1, anslen1, qname,
- &pat, &buffer, &buflen,
- errnop, h_errnop, ttlp,
- &first);
-
- if ((status == NSS_STATUS_SUCCESS || status == NSS_STATUS_NOTFOUND
- || (status == NSS_STATUS_TRYAGAIN
- /* We want to look at the second answer in case of an
- NSS_STATUS_TRYAGAIN only if the error is non-recoverable, i.e.
- *h_errnop is NO_RECOVERY. If not, and if the failure was due to
- an insufficient buffer (ERANGE), then we need to drop the results
- and pass on the NSS_STATUS_TRYAGAIN to the caller so that it can
- repeat the query with a larger buffer. */
- && (*errnop != ERANGE || *h_errnop == NO_RECOVERY)))
- && answer2 != NULL && anslen2 > 0)
+ if (packet1len > 0)
{
- enum nss_status status2 = gaih_getanswer_slice(answer2, anslen2, qname,
- &pat, &buffer, &buflen,
- errnop, h_errnop, ttlp,
- &first);
+ status = gaih_getanswer_slice (packet1, packet1len,
+ abuf, &pat, errnop, h_errnop, ttlp, true);
+ if (alloc_buffer_has_failed (abuf))
+ /* Do not try parsing the second packet if a larger result
+ buffer is needed. The caller implements the resizing
+ protocol because *abuf has been exhausted. */
+ return NSS_STATUS_TRYAGAIN; /* Ignored by the caller. */
+ }
+
+ if ((status == NSS_STATUS_SUCCESS || status == NSS_STATUS_NOTFOUND)
+ && packet2 != NULL && packet2len > 0)
+ {
+ enum nss_status status2
+ = gaih_getanswer_slice (packet2, packet2len,
+ abuf, &pat, errnop, h_errnop, ttlp,
+ /* Success means that data with a
+ canonical name has already been
+ stored. Do not store the name again. */
+ status != NSS_STATUS_SUCCESS);
/* Use the second response status in some cases. */
if (status != NSS_STATUS_SUCCESS && status2 != NSS_STATUS_NOTFOUND)
status = status2;
- /* Do not return a truncated second response (unless it was
- unavoidable e.g. unrecoverable TRYAGAIN). */
- if (status == NSS_STATUS_SUCCESS
- && (status2 == NSS_STATUS_TRYAGAIN
- && *errnop == ERANGE && *h_errnop != NO_RECOVERY))
- status = NSS_STATUS_TRYAGAIN;
}
return status;
@@ -1274,18 +1160,13 @@ gaih_getanswer (const querybuf *answer1, int anslen1, const querybuf *answer2,
/* Variant of gaih_getanswer without a second (AAAA) response. */
static enum nss_status
-gaih_getanswer_noaaaa (const querybuf *answer1, int anslen1, const char *qname,
- struct gaih_addrtuple **pat,
- char *buffer, size_t buflen,
+gaih_getanswer_noaaaa (unsigned char *packet, size_t packetlen,
+ struct alloc_buffer *abuf, struct gaih_addrtuple **pat,
int *errnop, int *h_errnop, int32_t *ttlp)
{
- int first = 1;
-
enum nss_status status = NSS_STATUS_NOTFOUND;
- if (anslen1 > 0)
- status = gaih_getanswer_slice (answer1, anslen1, qname,
- &pat, &buffer, &buflen,
- errnop, h_errnop, ttlp,
- &first);
+ if (packetlen > 0)
+ status = gaih_getanswer_slice (packet, packetlen,
+ abuf, &pat, errnop, h_errnop, ttlp, true);
return status;
}

19
SOURCES/glibc-rh2149102.patch
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@ -0,0 +1,19 @@
commit b8c6166b1b75036ab3e4127a1c0aacf52ca93651
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Sep 6 19:43:37 2021 +0200
locale: Add missing second argument to _Static_assert in C-collate-seq.c
diff --git a/locale/C-collate-seq.c b/locale/C-collate-seq.c
index 4fb82cb8357936b6..40b17f4f90313144 100644
--- a/locale/C-collate-seq.c
+++ b/locale/C-collate-seq.c
@@ -55,7 +55,7 @@ static const char collseqmb[] =
/* This table must be 256 bytes in size. We index bytes into the
table to find the collation sequence. */
-_Static_assert (sizeof (collseqmb) == 256);
+_Static_assert (sizeof (collseqmb) == 256, "sizeof (collseqmb)");
static const uint32_t collseqwc[] =
{

306
SOURCES/glibc-rh2162962.patch
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@ -0,0 +1,306 @@
Maintain an explicit order of tunables, so that the tunable_list
array and the tunable_id_t constant can remain consistent over time.
Related to this upstream bug:
Internal tunables ABI depends on awk array iteration order
<https://sourceware.org/bugzilla/show_bug.cgi?id=30027>
The new dl-tunables.list files are already on the sysdeps search
path, which is why the existing Makeconfig rule picks them up.
The files for RHEL 9.1z were created by applying the gen-tunables.awk
part of this patch to RHEL 9.1.0 (glibc-2.34-40.el9_2.1, to be
precise). The sysdeps/unix/sysv/linux/**/dl-tunables.list files were
created based on the generated error message during the RHEL 9.1.z
build.
Going forward, new tunables will have to be added manually to the end
of those files. Existing tunables should not be deleted. For
deletion, the script would have to be extended to be able to create
gaps in the tunable_list array.
diff --git a/scripts/gen-tunables.awk b/scripts/gen-tunables.awk
index fa63e86d1a51fe61..c5445e95f9fc36e7 100644
--- a/scripts/gen-tunables.awk
+++ b/scripts/gen-tunables.awk
@@ -14,6 +14,7 @@ BEGIN {
top_ns=""
max_name_len=0
max_alias_len=0
+ tunable_order_count = 0
}
# Skip over blank lines and comments.
@@ -83,6 +84,37 @@ $1 == "}" {
next
}
+$1 == "@order" {
+ if (top_ns != "") {
+ printf("%s:%d: error: invalid @order directive inside namespace %s\n",
+ FILENAME, FNR, top_ns) > "/dev/stderr"
+ exit 1
+ }
+ if (NF != 2) {
+ printf("%s:%d: error: invalid argument count in @order directive\n",
+ FILENAME, FNR) > "/dev/stderr"
+ exit 1
+ }
+ order_arg = $2
+ if (split(order_arg, indices, /\./) != 3) {
+ printf("%s:%d: error: invalid tunable syntax in @order directive\n",
+ FILENAME, FNR) > "/dev/stderr"
+ exit 1
+ }
+ t = indices[1]
+ n = indices[2]
+ m = indices[3]
+ if ((t, n, m) in tunable_order) {
+ printf("%s:%d: error: duplicate\"@order %s\"\n" \
+ FILENAME, FNR, order_arg) > "/dev/stderr"
+ exit 1
+ }
+ ++tunable_order_count
+ tunable_order[t,n,m] = tunable_order_count
+ tunable_order_list[tunable_order_count] = t SUBSEP n SUBSEP m
+ next
+}
+
# Everything else, which could either be a tunable without any attributes or a
# tunable attribute.
{
@@ -145,6 +177,31 @@ END {
exit 1
}
+ missing_order = 0
+ for (tnm in types) {
+ if (!(tnm in tunable_order)) {
+ if (!missing_order) {
+ print "error: Missing @order directives:" > "/dev/stderr"
+ missing_order = 1
+ }
+ split(tnm, indices, SUBSEP)
+ printf("@order %s.%s.%s\n", indices[1], indices[2], indices[3]) \
+ > "/dev/stderr"
+ }
+ }
+ for (i = 1; i <= tunable_order_count; ++i) {
+ tnm = tunable_order_list[i]
+ if (!(tnm in types)) {
+ split(tnm, indices, SUBSEP)
+ printf("error: tunable in \"@order %s.%s.%s\" not known\n", \
+ indices[1], indices[2], indices[3]) > "/dev/stderr"
+ missing_order = 1
+ }
+ }
+ if (missing_order) {
+ exit 1
+ }
+
print "/* AUTOGENERATED by gen-tunables.awk. */"
print "#ifndef _TUNABLES_H_"
print "# error \"Do not include this file directly.\""
@@ -155,7 +212,8 @@ END {
# Now, the enum names
print "\ntypedef enum"
print "{"
- for (tnm in types) {
+ for (i = 1; i <= tunable_order_count; ++i) {
+ tnm = tunable_order_list[i]
split (tnm, indices, SUBSEP);
t = indices[1];
n = indices[2];
@@ -171,7 +229,8 @@ END {
print "# include \"dl-tunable-types.h\""
# Finally, the tunable list.
print "static tunable_t tunable_list[] attribute_relro = {"
- for (tnm in types) {
+ for (i = 1; i <= tunable_order_count; ++i) {
+ tnm = tunable_order_list[i]
split (tnm, indices, SUBSEP);
t = indices[1];
n = indices[2];
diff --git a/sysdeps/unix/sysv/linux/aarch64/dl-tunables.list b/sysdeps/unix/sysv/linux/aarch64/dl-tunables.list
new file mode 100644
index 0000000000000000..d9d62499be4d67cb
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/dl-tunables.list
@@ -0,0 +1,28 @@
+# Order of tunables in RHEL 9.1.z.
+@order glibc.rtld.nns
+@order glibc.elision.skip_lock_after_retries
+@order glibc.malloc.trim_threshold
+@order glibc.malloc.perturb
+@order glibc.pthread.rseq
+@order glibc.cpu.name
+@order glibc.mem.tagging
+@order glibc.elision.tries
+@order glibc.elision.enable
+@order glibc.malloc.mxfast
+@order glibc.rtld.dynamic_sort
+@order glibc.elision.skip_lock_busy
+@order glibc.malloc.top_pad
+@order glibc.pthread.stack_cache_size
+@order glibc.cpu.hwcap_mask
+@order glibc.malloc.mmap_max
+@order glibc.elision.skip_trylock_internal_abort
+@order glibc.malloc.tcache_unsorted_limit
+@order glibc.elision.skip_lock_internal_abort
+@order glibc.malloc.arena_max
+@order glibc.malloc.mmap_threshold
+@order glibc.malloc.tcache_count
+@order glibc.malloc.arena_test
+@order glibc.pthread.mutex_spin_count
+@order glibc.rtld.optional_static_tls
+@order glibc.malloc.tcache_max
+@order glibc.malloc.check
diff --git a/sysdeps/unix/sysv/linux/i386/dl-tunables.list b/sysdeps/unix/sysv/linux/i386/dl-tunables.list
new file mode 100644
index 0000000000000000..e83962ec3af11691
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/dl-tunables.list
@@ -0,0 +1,35 @@
+# Order of tunables in RHEL 9.1.z.
+@order glibc.rtld.nns
+@order glibc.elision.skip_lock_after_retries
+@order glibc.malloc.trim_threshold
+@order glibc.malloc.perturb
+@order glibc.cpu.x86_shared_cache_size
+@order glibc.pthread.rseq
+@order glibc.mem.tagging
+@order glibc.elision.tries
+@order glibc.elision.enable
+@order glibc.cpu.x86_rep_movsb_threshold
+@order glibc.malloc.mxfast
+@order glibc.rtld.dynamic_sort
+@order glibc.elision.skip_lock_busy
+@order glibc.malloc.top_pad
+@order glibc.cpu.x86_rep_stosb_threshold
+@order glibc.cpu.x86_non_temporal_threshold
+@order glibc.cpu.x86_shstk
+@order glibc.pthread.stack_cache_size
+@order glibc.cpu.hwcap_mask
+@order glibc.malloc.mmap_max
+@order glibc.elision.skip_trylock_internal_abort
+@order glibc.malloc.tcache_unsorted_limit
+@order glibc.cpu.x86_ibt
+@order glibc.cpu.hwcaps
+@order glibc.elision.skip_lock_internal_abort
+@order glibc.malloc.arena_max
+@order glibc.malloc.mmap_threshold
+@order glibc.cpu.x86_data_cache_size
+@order glibc.malloc.tcache_count
+@order glibc.malloc.arena_test
+@order glibc.pthread.mutex_spin_count
+@order glibc.rtld.optional_static_tls
+@order glibc.malloc.tcache_max
+@order glibc.malloc.check
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/dl-tunables.list b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/dl-tunables.list
new file mode 100644
index 0000000000000000..8f01840ef57874e7
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/dl-tunables.list
@@ -0,0 +1,28 @@
+# Order of tunables in RHEL 9.1.z.
+@order glibc.rtld.nns
+@order glibc.elision.skip_lock_after_retries
+@order glibc.malloc.trim_threshold
+@order glibc.malloc.perturb
+@order glibc.pthread.rseq
+@order glibc.mem.tagging
+@order glibc.elision.tries
+@order glibc.elision.enable
+@order glibc.malloc.mxfast
+@order glibc.rtld.dynamic_sort
+@order glibc.elision.skip_lock_busy
+@order glibc.malloc.top_pad
+@order glibc.pthread.stack_cache_size
+@order glibc.cpu.hwcap_mask
+@order glibc.malloc.mmap_max
+@order glibc.elision.skip_trylock_internal_abort
+@order glibc.malloc.tcache_unsorted_limit
+@order glibc.elision.skip_lock_internal_abort
+@order glibc.malloc.arena_max
+@order glibc.malloc.mmap_threshold
+@order glibc.cpu.cached_memopt
+@order glibc.malloc.tcache_count
+@order glibc.malloc.arena_test
+@order glibc.pthread.mutex_spin_count
+@order glibc.rtld.optional_static_tls
+@order glibc.malloc.tcache_max
+@order glibc.malloc.check
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/dl-tunables.list b/sysdeps/unix/sysv/linux/s390/s390-64/dl-tunables.list
new file mode 100644
index 0000000000000000..c3bc83f33910af22
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/dl-tunables.list
@@ -0,0 +1,27 @@
+# Order of tunables in RHEL 9.1.z.
+@order glibc.rtld.nns
+@order glibc.elision.skip_lock_after_retries
+@order glibc.malloc.trim_threshold
+@order glibc.malloc.perturb
+@order glibc.pthread.rseq
+@order glibc.mem.tagging
+@order glibc.elision.tries
+@order glibc.elision.enable
+@order glibc.malloc.mxfast
+@order glibc.rtld.dynamic_sort
+@order glibc.elision.skip_lock_busy
+@order glibc.malloc.top_pad
+@order glibc.pthread.stack_cache_size
+@order glibc.cpu.hwcap_mask
+@order glibc.malloc.mmap_max
+@order glibc.elision.skip_trylock_internal_abort
+@order glibc.malloc.tcache_unsorted_limit
+@order glibc.elision.skip_lock_internal_abort
+@order glibc.malloc.arena_max
+@order glibc.malloc.mmap_threshold
+@order glibc.malloc.tcache_count
+@order glibc.malloc.arena_test
+@order glibc.pthread.mutex_spin_count
+@order glibc.rtld.optional_static_tls
+@order glibc.malloc.tcache_max
+@order glibc.malloc.check
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/dl-tunables.list b/sysdeps/unix/sysv/linux/x86_64/64/dl-tunables.list
new file mode 100644
index 0000000000000000..e83962ec3af11691
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86_64/64/dl-tunables.list
@@ -0,0 +1,35 @@
+# Order of tunables in RHEL 9.1.z.
+@order glibc.rtld.nns
+@order glibc.elision.skip_lock_after_retries
+@order glibc.malloc.trim_threshold
+@order glibc.malloc.perturb
+@order glibc.cpu.x86_shared_cache_size
+@order glibc.pthread.rseq
+@order glibc.mem.tagging
+@order glibc.elision.tries
+@order glibc.elision.enable
+@order glibc.cpu.x86_rep_movsb_threshold
+@order glibc.malloc.mxfast
+@order glibc.rtld.dynamic_sort
+@order glibc.elision.skip_lock_busy
+@order glibc.malloc.top_pad
+@order glibc.cpu.x86_rep_stosb_threshold
+@order glibc.cpu.x86_non_temporal_threshold
+@order glibc.cpu.x86_shstk
+@order glibc.pthread.stack_cache_size
+@order glibc.cpu.hwcap_mask
+@order glibc.malloc.mmap_max
+@order glibc.elision.skip_trylock_internal_abort
+@order glibc.malloc.tcache_unsorted_limit
+@order glibc.cpu.x86_ibt
+@order glibc.cpu.hwcaps
+@order glibc.elision.skip_lock_internal_abort
+@order glibc.malloc.arena_max
+@order glibc.malloc.mmap_threshold
+@order glibc.cpu.x86_data_cache_size
+@order glibc.malloc.tcache_count
+@order glibc.malloc.arena_test
+@order glibc.pthread.mutex_spin_count
+@order glibc.rtld.optional_static_tls
+@order glibc.malloc.tcache_max
+@order glibc.malloc.check

24
SOURCES/glibc-upstream-2.34-303.patch
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@ -0,0 +1,24 @@
commit 875b2414cd68df64aeead651a9b05ae9bc3d88ef
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Aug 4 17:54:48 2022 +0200
dlfcn: Pass caller pointer to static dlopen implementation (bug 29446)
Fixes commit 0c1c3a771eceec46e66ce1183cf988e2303bd373 ("dlfcn: Move
dlopen into libc").
(cherry picked from commit ed0185e4129130cbe081c221efb758fb400623ce)
diff --git a/dlfcn/dlopen.c b/dlfcn/dlopen.c
index 9c59c751c4eaf7a7..739d17baafe928cc 100644
--- a/dlfcn/dlopen.c
+++ b/dlfcn/dlopen.c
@@ -90,7 +90,7 @@ compat_symbol (libdl, ___dlopen, dlopen, GLIBC_2_1);
void *
__dlopen (const char *file, int mode, void *dl_caller)
{
- return dlopen_implementation (file, mode, RETURN_ADDRESS (0));
+ return dlopen_implementation (file, mode, dl_caller);
}
void *

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commit 4ab59ce4e5195f98b01748127248fed2b2b77b21
Author: Joseph Myers <joseph@codesourcery.com>
Date: Tue Aug 2 21:05:07 2022 +0000
Update syscall lists for Linux 5.19
Linux 5.19 has no new syscalls, but enables memfd_secret in the uapi
headers for RISC-V. Update the version number in syscall-names.list
to reflect that it is still current for 5.19 and regenerate the
arch-syscall.h headers with build-many-glibcs.py update-syscalls.
Tested with build-many-glibcs.py.
(cherry picked from commit fccadcdf5bed7ee67a6cef4714e0b477d6c8472c)
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h b/sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h
index bf4be80f8d380963..202520ee254ec02f 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h
@@ -122,6 +122,7 @@
#define __NR_mbind 235
#define __NR_membarrier 283
#define __NR_memfd_create 279
+#define __NR_memfd_secret 447
#define __NR_migrate_pages 238
#define __NR_mincore 232
#define __NR_mkdirat 34
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h b/sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h
index d656aedcc2be6009..4e65f337d486de1f 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h
@@ -127,6 +127,7 @@
#define __NR_mbind 235
#define __NR_membarrier 283
#define __NR_memfd_create 279
+#define __NR_memfd_secret 447
#define __NR_migrate_pages 238
#define __NR_mincore 232
#define __NR_mkdirat 34
diff --git a/sysdeps/unix/sysv/linux/syscall-names.list b/sysdeps/unix/sysv/linux/syscall-names.list
index 95370e2ec5dbc4a7..9b285d898db9ab9e 100644
--- a/sysdeps/unix/sysv/linux/syscall-names.list
+++ b/sysdeps/unix/sysv/linux/syscall-names.list
@@ -21,8 +21,8 @@
# This file can list all potential system calls. The names are only
# used if the installed kernel headers also provide them.
-# The list of system calls is current as of Linux 5.18.
-kernel 5.18
+# The list of system calls is current as of Linux 5.19.
+kernel 5.19
FAST_atomic_update
FAST_cmpxchg

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commit a88f07f71f051021339682328103a8c75559fc5f
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date: Wed Jun 22 08:24:21 2022 -0700
stdlib: Remove attr_write from mbstows if dst is NULL [BZ: 29265]
mbstows is defined if dst is NULL and is defined to special cased if
dst is NULL so the fortify objsize check if incorrect in that case.
Tested on x86-64 linux.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 464d189b9622932a75302290625de84931656ec0)
diff --git a/stdlib/Makefile b/stdlib/Makefile
index a4ac30d1f6359561..e13f1ee33c410ae6 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -217,6 +217,9 @@ CFLAGS-tst-qsort.c += $(stack-align-test-flags)
CFLAGS-tst-makecontext.c += -funwind-tables
CFLAGS-tst-makecontext2.c += $(stack-align-test-flags)
+CFLAGS-testmb.c += -D_FORTIFY_SOURCE=2 -Wall -Werror
+
+
# Run a test on the header files we use.
tests-special += $(objpfx)isomac.out
diff --git a/stdlib/bits/stdlib.h b/stdlib/bits/stdlib.h
index ccacbdf76a08225a..f0918d5d798a6ac4 100644
--- a/stdlib/bits/stdlib.h
+++ b/stdlib/bits/stdlib.h
@@ -96,6 +96,11 @@ extern size_t __mbstowcs_chk (wchar_t *__restrict __dst,
const char *__restrict __src,
size_t __len, size_t __dstlen) __THROW
__attr_access ((__write_only__, 1, 3)) __attr_access ((__read_only__, 2));
+extern size_t __REDIRECT_NTH (__mbstowcs_chk_nulldst,
+ (wchar_t *__restrict __dst,
+ const char *__restrict __src,
+ size_t __len), mbstowcs_chk)
+ __attr_access ((__read_only__, 2));
extern size_t __REDIRECT_NTH (__mbstowcs_alias,
(wchar_t *__restrict __dst,
const char *__restrict __src,
@@ -108,16 +113,17 @@ extern size_t __REDIRECT_NTH (__mbstowcs_chk_warn,
__warnattr ("mbstowcs called with dst buffer smaller than len "
"* sizeof (wchar_t)");
-__fortify_function size_t
+__always_inline __fortify_function size_t
__NTH (mbstowcs (wchar_t *__restrict __dst, const char *__restrict __src,
size_t __len))
{
- return __glibc_fortify_n (mbstowcs, __len, sizeof (wchar_t),
- __glibc_objsize (__dst),
- __dst, __src, __len);
+ if (__builtin_constant_p (__dst == NULL) && __dst == NULL)
+ return __mbstowcs_chk_nulldst (__dst, __src, __len);
+ else
+ return __glibc_fortify_n (mbstowcs, __len, sizeof (wchar_t),
+ __glibc_objsize (__dst), __dst, __src, __len);
}
-
extern size_t __wcstombs_chk (char *__restrict __dst,
const wchar_t *__restrict __src,
size_t __len, size_t __dstlen) __THROW
diff --git a/stdlib/testmb.c b/stdlib/testmb.c
index 45dae7db61fb3e7b..6ac4dfd21d2d33b8 100644
--- a/stdlib/testmb.c
+++ b/stdlib/testmb.c
@@ -16,6 +16,13 @@ main (int argc, char *argv[])
lose = 1;
}
+ i = mbstowcs (NULL, "bar", 4);
+ if (!(i == 3 && w[1] == 'a'))
+ {
+ puts ("mbstowcs FAILED2!");
+ lose = 1;
+ }
+
mbstowcs (w, "blah", 5);
i = wcstombs (c, w, 10);
if (i != 4)

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commit 4bc889c01ce68475ce36f9c67b9a445a6c0218d9
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date: Wed Jun 22 16:34:42 2022 -0700
stdlib: Fixup mbstowcs NULL __dst handling. [BZ #29279]
commit 464d189b9622932a75302290625de84931656ec0 (origin/master, origin/HEAD)
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date: Wed Jun 22 08:24:21 2022 -0700
stdlib: Remove attr_write from mbstows if dst is NULL [BZ: 29265]
Incorrectly called `__mbstowcs_chk` in the NULL __dst case which is
incorrect as in the NULL __dst case we are explicitly skipping
the objsize checks.
As well, remove the `__always_inline` attribute which exists in
`__fortify_function`.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 220b83d83d32aa9e6f5659e2fa2a63a0024c3e4a)
diff --git a/stdlib/bits/stdlib.h b/stdlib/bits/stdlib.h
index f0918d5d798a6ac4..ac9badc81f3990c5 100644
--- a/stdlib/bits/stdlib.h
+++ b/stdlib/bits/stdlib.h
@@ -96,10 +96,10 @@ extern size_t __mbstowcs_chk (wchar_t *__restrict __dst,
const char *__restrict __src,
size_t __len, size_t __dstlen) __THROW
__attr_access ((__write_only__, 1, 3)) __attr_access ((__read_only__, 2));
-extern size_t __REDIRECT_NTH (__mbstowcs_chk_nulldst,
+extern size_t __REDIRECT_NTH (__mbstowcs_nulldst,
(wchar_t *__restrict __dst,
const char *__restrict __src,
- size_t __len), mbstowcs_chk)
+ size_t __len), mbstowcs)
__attr_access ((__read_only__, 2));
extern size_t __REDIRECT_NTH (__mbstowcs_alias,
(wchar_t *__restrict __dst,
@@ -113,12 +113,12 @@ extern size_t __REDIRECT_NTH (__mbstowcs_chk_warn,
__warnattr ("mbstowcs called with dst buffer smaller than len "
"* sizeof (wchar_t)");
-__always_inline __fortify_function size_t
+__fortify_function size_t
__NTH (mbstowcs (wchar_t *__restrict __dst, const char *__restrict __src,
size_t __len))
{
if (__builtin_constant_p (__dst == NULL) && __dst == NULL)
- return __mbstowcs_chk_nulldst (__dst, __src, __len);
+ return __mbstowcs_nulldst (__dst, __src, __len);
else
return __glibc_fortify_n (mbstowcs, __len, sizeof (wchar_t),
__glibc_objsize (__dst), __dst, __src, __len);

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commit 1fcc7bfee22a07064508b6729cdaa6289851a2b4
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Aug 22 11:04:47 2022 +0200
alpha: Fix generic brk system call emulation in __brk_call (bug 29490)
The kernel special-cases the zero argument for alpha brk, and we can
use that to restore the generic Linux error handling behavior.
Fixes commit b57ab258c1140bc45464b4b9908713e3e0ee35aa ("Linux:
Introduce __brk_call for invoking the brk system call").
(cherry picked from commit e7ad26ee3cb74e61d0637c888f24dd478d77af58)
diff --git a/sysdeps/unix/sysv/linux/alpha/brk_call.h b/sysdeps/unix/sysv/linux/alpha/brk_call.h
index b8088cf13f938c88..0b851b6c8664e8d5 100644
--- a/sysdeps/unix/sysv/linux/alpha/brk_call.h
+++ b/sysdeps/unix/sysv/linux/alpha/brk_call.h
@@ -21,8 +21,7 @@ __brk_call (void *addr)
{
unsigned long int result = INTERNAL_SYSCALL_CALL (brk, addr);
if (result == -ENOMEM)
- /* Mimic the default error reporting behavior. */
- return addr;
- else
- return (void *) result;
+ /* Mimic the generic error reporting behavior. */
+ result = INTERNAL_SYSCALL_CALL (brk, 0);
+ return (void *) result;
}

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commit 68507377f249d165f1f35502d96e9365edb07d9a
Author: Arjun Shankar <arjun@redhat.com>
Date: Tue Aug 2 11:10:25 2022 +0200
socket: Check lengths before advancing pointer in CMSG_NXTHDR
The inline and library functions that the CMSG_NXTHDR macro may expand
to increment the pointer to the header before checking the stride of
the increment against available space. Since C only allows incrementing
pointers to one past the end of an array, the increment must be done
after a length check. This commit fixes that and includes a regression
test for CMSG_FIRSTHDR and CMSG_NXTHDR.
The Linux, Hurd, and generic headers are all changed.
Tested on Linux on armv7hl, i686, x86_64, aarch64, ppc64le, and s390x.
[BZ #28846]
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 9c443ac4559a47ed99859bd80d14dc4b6dd220a1)
diff --git a/bits/socket.h b/bits/socket.h
index 05ac0249c7da7218..781b1b2d1e0632a8 100644
--- a/bits/socket.h
+++ b/bits/socket.h
@@ -245,6 +245,12 @@ struct cmsghdr
+ CMSG_ALIGN (sizeof (struct cmsghdr)))
#define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
+/* Given a length, return the additional padding necessary such that
+ len + __CMSG_PADDING(len) == CMSG_ALIGN (len). */
+#define __CMSG_PADDING(len) ((sizeof (size_t) \
+ - ((len) & (sizeof (size_t) - 1))) \
+ & (sizeof (size_t) - 1))
+
extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
struct cmsghdr *__cmsg) __THROW;
#ifdef __USE_EXTERN_INLINES
@@ -254,18 +260,38 @@ extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
_EXTERN_INLINE struct cmsghdr *
__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
{
+ /* We may safely assume that __cmsg lies between __mhdr->msg_control and
+ __mhdr->msg_controllen because the user is required to obtain the first
+ cmsg via CMSG_FIRSTHDR, set its length, then obtain subsequent cmsgs
+ via CMSG_NXTHDR, setting lengths along the way. However, we don't yet
+ trust the value of __cmsg->cmsg_len and therefore do not use it in any
+ pointer arithmetic until we check its value. */
+
+ unsigned char * __msg_control_ptr = (unsigned char *) __mhdr->msg_control;
+ unsigned char * __cmsg_ptr = (unsigned char *) __cmsg;
+
+ size_t __size_needed = sizeof (struct cmsghdr)
+ + __CMSG_PADDING (__cmsg->cmsg_len);
+
+ /* The current header is malformed, too small to be a full header. */
if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
- /* The kernel header does this so there may be a reason. */
return (struct cmsghdr *) 0;
+ /* There isn't enough space between __cmsg and the end of the buffer to
+ hold the current cmsg *and* the next one. */
+ if (((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr)
+ < __size_needed)
+ || ((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr
+ - __size_needed)
+ < __cmsg->cmsg_len))
+
+ return (struct cmsghdr *) 0;
+
+ /* Now, we trust cmsg_len and can use it to find the next header. */
__cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
+ CMSG_ALIGN (__cmsg->cmsg_len));
- if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
- + __mhdr->msg_controllen)
- || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
- > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
- /* No more entries. */
- return (struct cmsghdr *) 0;
return __cmsg;
}
#endif /* Use `extern inline'. */
diff --git a/socket/Makefile b/socket/Makefile
index c2de11d73ca1e324..2fdf441bb44bf142 100644
--- a/socket/Makefile
+++ b/socket/Makefile
@@ -34,6 +34,7 @@ routines := accept bind connect getpeername getsockname getsockopt \
tests := \
tst-accept4 \
tst-sockopt \
+ tst-cmsghdr \
# tests
tests-internal := \
diff --git a/socket/tst-cmsghdr-skeleton.c b/socket/tst-cmsghdr-skeleton.c
new file mode 100644
index 0000000000000000..7accfa6e54708e2a
--- /dev/null
+++ b/socket/tst-cmsghdr-skeleton.c
@@ -0,0 +1,93 @@
+/* Test ancillary data header creation.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* We use the preprocessor to generate the function/macro tests instead of
+ using indirection because having all the macro expansions alongside
+ each other lets the compiler warn us about suspicious pointer
+ arithmetic across subsequent CMSG_{FIRST,NXT}HDR expansions. */
+
+#include <stdint.h>
+#include <stddef.h>
+
+#define RUN_TEST_CONCAT(suffix) run_test_##suffix
+#define RUN_TEST_FUNCNAME(suffix) RUN_TEST_CONCAT (suffix)
+
+static void
+RUN_TEST_FUNCNAME (CMSG_NXTHDR_IMPL) (void)
+{
+ struct msghdr m = {0};
+ struct cmsghdr *cmsg;
+ char cmsgbuf[3 * CMSG_SPACE (sizeof (PAYLOAD))] = {0};
+
+ m.msg_control = cmsgbuf;
+ m.msg_controllen = sizeof (cmsgbuf);
+
+ /* First header should point to the start of the buffer. */
+ cmsg = CMSG_FIRSTHDR (&m);
+ TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
+
+ /* If the first header length consumes the entire buffer, there is no
+ space remaining for additional headers. */
+ cmsg->cmsg_len = sizeof (cmsgbuf);
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg == NULL);
+
+ /* The first header length is so big, using it would cause an overflow. */
+ cmsg = CMSG_FIRSTHDR (&m);
+ TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
+ cmsg->cmsg_len = SIZE_MAX;
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg == NULL);
+
+ /* The first header leaves just enough space to hold another header. */
+ cmsg = CMSG_FIRSTHDR (&m);
+ TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
+ cmsg->cmsg_len = sizeof (cmsgbuf) - sizeof (struct cmsghdr);
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg != NULL);
+
+ /* The first header leaves space but not enough for another header. */
+ cmsg = CMSG_FIRSTHDR (&m);
+ TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
+ cmsg->cmsg_len ++;
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg == NULL);
+
+ /* The second header leaves just enough space to hold another header. */
+ cmsg = CMSG_FIRSTHDR (&m);
+ TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
+ cmsg->cmsg_len = CMSG_LEN (sizeof (PAYLOAD));
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg != NULL);
+ cmsg->cmsg_len = sizeof (cmsgbuf)
+ - CMSG_SPACE (sizeof (PAYLOAD)) /* First header. */
+ - sizeof (struct cmsghdr);
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg != NULL);
+
+ /* The second header leaves space but not enough for another header. */
+ cmsg = CMSG_FIRSTHDR (&m);
+ TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg != NULL);
+ cmsg->cmsg_len ++;
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg == NULL);
+
+ return;
+}
diff --git a/socket/tst-cmsghdr.c b/socket/tst-cmsghdr.c
new file mode 100644
index 0000000000000000..68c96d3c9dd2bce8
--- /dev/null
+++ b/socket/tst-cmsghdr.c
@@ -0,0 +1,56 @@
+/* Test ancillary data header creation.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <sys/socket.h>
+#include <gnu/lib-names.h>
+#include <support/xdlfcn.h>
+#include <support/check.h>
+
+#define PAYLOAD "Hello, World!"
+
+/* CMSG_NXTHDR is a macro that calls an inline function defined in
+ bits/socket.h. In case the function cannot be inlined, libc.so carries
+ a copy. Both versions need to be tested. */
+
+#define CMSG_NXTHDR_IMPL CMSG_NXTHDR
+#include "tst-cmsghdr-skeleton.c"
+#undef CMSG_NXTHDR_IMPL
+
+static struct cmsghdr * (* cmsg_nxthdr) (struct msghdr *, struct cmsghdr *);
+
+#define CMSG_NXTHDR_IMPL cmsg_nxthdr
+#include "tst-cmsghdr-skeleton.c"
+#undef CMSG_NXTHDR_IMPL
+
+static int
+do_test (void)
+{
+ static void *handle;
+
+ run_test_CMSG_NXTHDR ();
+
+ handle = xdlopen (LIBC_SO, RTLD_LAZY);
+ cmsg_nxthdr = (struct cmsghdr * (*) (struct msghdr *, struct cmsghdr *))
+ xdlsym (handle, "__cmsg_nxthdr");
+
+ run_test_cmsg_nxthdr ();
+
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/sysdeps/mach/hurd/bits/socket.h b/sysdeps/mach/hurd/bits/socket.h
index 5210a7b44950e957..423eb2df09c3eef9 100644
--- a/sysdeps/mach/hurd/bits/socket.h
+++ b/sysdeps/mach/hurd/bits/socket.h
@@ -249,6 +249,12 @@ struct cmsghdr
+ CMSG_ALIGN (sizeof (struct cmsghdr)))
#define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
+/* Given a length, return the additional padding necessary such that
+ len + __CMSG_PADDING(len) == CMSG_ALIGN (len). */
+#define __CMSG_PADDING(len) ((sizeof (size_t) \
+ - ((len) & (sizeof (size_t) - 1))) \
+ & (sizeof (size_t) - 1))
+
extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
struct cmsghdr *__cmsg) __THROW;
#ifdef __USE_EXTERN_INLINES
@@ -258,18 +264,38 @@ extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
_EXTERN_INLINE struct cmsghdr *
__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
{
+ /* We may safely assume that __cmsg lies between __mhdr->msg_control and
+ __mhdr->msg_controllen because the user is required to obtain the first
+ cmsg via CMSG_FIRSTHDR, set its length, then obtain subsequent cmsgs
+ via CMSG_NXTHDR, setting lengths along the way. However, we don't yet
+ trust the value of __cmsg->cmsg_len and therefore do not use it in any
+ pointer arithmetic until we check its value. */
+
+ unsigned char * __msg_control_ptr = (unsigned char *) __mhdr->msg_control;
+ unsigned char * __cmsg_ptr = (unsigned char *) __cmsg;
+
+ size_t __size_needed = sizeof (struct cmsghdr)
+ + __CMSG_PADDING (__cmsg->cmsg_len);
+
+ /* The current header is malformed, too small to be a full header. */
if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
- /* The kernel header does this so there may be a reason. */
return (struct cmsghdr *) 0;
+ /* There isn't enough space between __cmsg and the end of the buffer to
+ hold the current cmsg *and* the next one. */
+ if (((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr)
+ < __size_needed)
+ || ((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr
+ - __size_needed)
+ < __cmsg->cmsg_len))
+
+ return (struct cmsghdr *) 0;
+
+ /* Now, we trust cmsg_len and can use it to find the next header. */
__cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
+ CMSG_ALIGN (__cmsg->cmsg_len));
- if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
- + __mhdr->msg_controllen)
- || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
- > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
- /* No more entries. */
- return (struct cmsghdr *) 0;
return __cmsg;
}
#endif /* Use `extern inline'. */
diff --git a/sysdeps/unix/sysv/linux/bits/socket.h b/sysdeps/unix/sysv/linux/bits/socket.h
index c81fab840918924e..7d56f877e0a73acb 100644
--- a/sysdeps/unix/sysv/linux/bits/socket.h
+++ b/sysdeps/unix/sysv/linux/bits/socket.h
@@ -306,6 +306,12 @@ struct cmsghdr
+ CMSG_ALIGN (sizeof (struct cmsghdr)))
#define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
+/* Given a length, return the additional padding necessary such that
+ len + __CMSG_PADDING(len) == CMSG_ALIGN (len). */
+#define __CMSG_PADDING(len) ((sizeof (size_t) \
+ - ((len) & (sizeof (size_t) - 1))) \
+ & (sizeof (size_t) - 1))
+
extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
struct cmsghdr *__cmsg) __THROW;
#ifdef __USE_EXTERN_INLINES
@@ -315,18 +321,38 @@ extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
_EXTERN_INLINE struct cmsghdr *
__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
{
+ /* We may safely assume that __cmsg lies between __mhdr->msg_control and
+ __mhdr->msg_controllen because the user is required to obtain the first
+ cmsg via CMSG_FIRSTHDR, set its length, then obtain subsequent cmsgs
+ via CMSG_NXTHDR, setting lengths along the way. However, we don't yet
+ trust the value of __cmsg->cmsg_len and therefore do not use it in any
+ pointer arithmetic until we check its value. */
+
+ unsigned char * __msg_control_ptr = (unsigned char *) __mhdr->msg_control;
+ unsigned char * __cmsg_ptr = (unsigned char *) __cmsg;
+
+ size_t __size_needed = sizeof (struct cmsghdr)
+ + __CMSG_PADDING (__cmsg->cmsg_len);
+
+ /* The current header is malformed, too small to be a full header. */
if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
- /* The kernel header does this so there may be a reason. */
return (struct cmsghdr *) 0;
+ /* There isn't enough space between __cmsg and the end of the buffer to
+ hold the current cmsg *and* the next one. */
+ if (((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr)
+ < __size_needed)
+ || ((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr
+ - __size_needed)
+ < __cmsg->cmsg_len))
+
+ return (struct cmsghdr *) 0;
+
+ /* Now, we trust cmsg_len and can use it to find the next header. */
__cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
+ CMSG_ALIGN (__cmsg->cmsg_len));
- if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
- + __mhdr->msg_controllen)
- || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
- > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
- /* No more entries. */
- return (struct cmsghdr *) 0;
return __cmsg;
}
#endif /* Use `extern inline'. */
diff --git a/sysdeps/unix/sysv/linux/cmsg_nxthdr.c b/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
index a0fe49f28563d030..535d22e9a037b9a9 100644
--- a/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
+++ b/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
@@ -23,18 +23,38 @@
struct cmsghdr *
__cmsg_nxthdr (struct msghdr *mhdr, struct cmsghdr *cmsg)
{
+ /* We may safely assume that cmsg lies between mhdr->msg_control and
+ mhdr->msg_controllen because the user is required to obtain the first
+ cmsg via CMSG_FIRSTHDR, set its length, then obtain subsequent cmsgs
+ via CMSG_NXTHDR, setting lengths along the way. However, we don't yet
+ trust the value of cmsg->cmsg_len and therefore do not use it in any
+ pointer arithmetic until we check its value. */
+
+ unsigned char * msg_control_ptr = (unsigned char *) mhdr->msg_control;
+ unsigned char * cmsg_ptr = (unsigned char *) cmsg;
+
+ size_t size_needed = sizeof (struct cmsghdr)
+ + __CMSG_PADDING (cmsg->cmsg_len);
+
+ /* The current header is malformed, too small to be a full header. */
if ((size_t) cmsg->cmsg_len < sizeof (struct cmsghdr))
- /* The kernel header does this so there may be a reason. */
- return NULL;
+ return (struct cmsghdr *) 0;
+
+ /* There isn't enough space between cmsg and the end of the buffer to
+ hold the current cmsg *and* the next one. */
+ if (((size_t)
+ (msg_control_ptr + mhdr->msg_controllen - cmsg_ptr)
+ < size_needed)
+ || ((size_t)
+ (msg_control_ptr + mhdr->msg_controllen - cmsg_ptr
+ - size_needed)
+ < cmsg->cmsg_len))
+
+ return (struct cmsghdr *) 0;
+ /* Now, we trust cmsg_len and can use it to find the next header. */
cmsg = (struct cmsghdr *) ((unsigned char *) cmsg
+ CMSG_ALIGN (cmsg->cmsg_len));
- if ((unsigned char *) (cmsg + 1) > ((unsigned char *) mhdr->msg_control
- + mhdr->msg_controllen)
- || ((unsigned char *) cmsg + CMSG_ALIGN (cmsg->cmsg_len)
- > ((unsigned char *) mhdr->msg_control + mhdr->msg_controllen)))
- /* No more entries. */
- return NULL;
return cmsg;
}
libc_hidden_def (__cmsg_nxthdr)

212
SOURCES/glibc-upstream-2.34-309.patch
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@ -0,0 +1,212 @@
commit 536ddc5c02f1ee82483319863a893ccb381beece
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Aug 26 21:15:43 2022 +0200
elf: Call __libc_early_init for reused namespaces (bug 29528)
libc_map is never reset to NULL, neither during dlclose nor on a
dlopen call which reuses the namespace structure. As a result, if a
namespace is reused, its libc is not initialized properly. The most
visible result is a crash in the <ctype.h> functions.
To prevent similar bugs on namespace reuse from surfacing,
unconditionally initialize the chosen namespace to zero using memset.
(cherry picked from commit d0e357ff45a75553dee3b17ed7d303bfa544f6fe)
Conflicts:
elf/Makefile
(usual test differences)
diff --git a/elf/Makefile b/elf/Makefile
index 2b547d5b58f1759b..feec365e4e5fe9b3 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -399,6 +399,7 @@ tests += \
tst-dlmopen3 \
tst-dlmopen-dlerror \
tst-dlmopen-gethostbyname \
+ tst-dlmopen-twice \
tst-dlopenfail \
tst-dlopenfail-2 \
tst-dlopenrpath \
@@ -744,6 +745,8 @@ modules-names = \
tst-dlmopen1mod \
tst-dlmopen-dlerror-mod \
tst-dlmopen-gethostbyname-mod \
+ tst-dlmopen-twice-mod1 \
+ tst-dlmopen-twice-mod2 \
tst-dlopenfaillinkmod \
tst-dlopenfailmod1 \
tst-dlopenfailmod2 \
@@ -2665,3 +2668,7 @@ $(objpfx)tst-audit-tlsdesc.out: $(objpfx)tst-auditmod-tlsdesc.so
tst-audit-tlsdesc-ENV = LD_AUDIT=$(objpfx)tst-auditmod-tlsdesc.so
$(objpfx)tst-audit-tlsdesc-dlopen.out: $(objpfx)tst-auditmod-tlsdesc.so
tst-audit-tlsdesc-dlopen-ENV = LD_AUDIT=$(objpfx)tst-auditmod-tlsdesc.so
+
+$(objpfx)tst-dlmopen-twice.out: \
+ $(objpfx)tst-dlmopen-twice-mod1.so \
+ $(objpfx)tst-dlmopen-twice-mod2.so
diff --git a/elf/dl-open.c b/elf/dl-open.c
index bc6872632880634e..1ab3c7b5ac2fbc45 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -839,11 +839,14 @@ _dl_open (const char *file, int mode, const void *caller_dlopen, Lmid_t nsid,
_dl_signal_error (EINVAL, file, NULL, N_("\
no more namespaces available for dlmopen()"));
}
- else if (nsid == GL(dl_nns))
- {
- __rtld_lock_initialize (GL(dl_ns)[nsid]._ns_unique_sym_table.lock);
- ++GL(dl_nns);
- }
+
+ if (nsid == GL(dl_nns))
+ ++GL(dl_nns);
+
+ /* Initialize the new namespace. Most members are
+ zero-initialized, only the lock needs special treatment. */
+ memset (&GL(dl_ns)[nsid], 0, sizeof (GL(dl_ns)[nsid]));
+ __rtld_lock_initialize (GL(dl_ns)[nsid]._ns_unique_sym_table.lock);
_dl_debug_initialize (0, nsid)->r_state = RT_CONSISTENT;
}
diff --git a/elf/tst-dlmopen-twice-mod1.c b/elf/tst-dlmopen-twice-mod1.c
new file mode 100644
index 0000000000000000..0eaf04948ce5263e
--- /dev/null
+++ b/elf/tst-dlmopen-twice-mod1.c
@@ -0,0 +1,37 @@
+/* Initialization of libc after dlmopen/dlclose/dlmopen (bug 29528). Module 1.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <stdio.h>
+
+static void __attribute__ ((constructor))
+init (void)
+{
+ puts ("info: tst-dlmopen-twice-mod1.so loaded");
+ fflush (stdout);
+}
+
+static void __attribute__ ((destructor))
+fini (void)
+{
+ puts ("info: tst-dlmopen-twice-mod1.so about to be unloaded");
+ fflush (stdout);
+}
+
+/* Large allocation. The second module does not have this, so it
+ should load libc at a different address. */
+char large_allocate[16 * 1024 * 1024];
diff --git a/elf/tst-dlmopen-twice-mod2.c b/elf/tst-dlmopen-twice-mod2.c
new file mode 100644
index 0000000000000000..40c6c01f9625e188
--- /dev/null
+++ b/elf/tst-dlmopen-twice-mod2.c
@@ -0,0 +1,50 @@
+/* Initialization of libc after dlmopen/dlclose/dlmopen (bug 29528). Module 2.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <ctype.h>
+#include <stdio.h>
+
+static void __attribute__ ((constructor))
+init (void)
+{
+ puts ("info: tst-dlmopen-twice-mod2.so loaded");
+ fflush (stdout);
+}
+
+static void __attribute__ ((destructor))
+fini (void)
+{
+ puts ("info: tst-dlmopen-twice-mod2.so about to be unloaded");
+ fflush (stdout);
+}
+
+int
+run_check (void)
+{
+ puts ("info: about to call isalpha");
+ fflush (stdout);
+
+ volatile char ch = 'a';
+ if (!isalpha (ch))
+ {
+ puts ("error: isalpha ('a') is not true");
+ fflush (stdout);
+ return 1;
+ }
+ return 0;
+}
diff --git a/elf/tst-dlmopen-twice.c b/elf/tst-dlmopen-twice.c
new file mode 100644
index 0000000000000000..449f3c8fa9f2aa01
--- /dev/null
+++ b/elf/tst-dlmopen-twice.c
@@ -0,0 +1,34 @@
+/* Initialization of libc after dlmopen/dlclose/dlmopen (bug 29528). Main.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <support/xdlfcn.h>
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+ void *handle = xdlmopen (LM_ID_NEWLM, "tst-dlmopen-twice-mod1.so", RTLD_NOW);
+ xdlclose (handle);
+ handle = xdlmopen (LM_ID_NEWLM, "tst-dlmopen-twice-mod2.so", RTLD_NOW);
+ int (*run_check) (void) = xdlsym (handle, "run_check");
+ TEST_COMPARE (run_check (), 0);
+ xdlclose (handle);
+ return 0;
+}
+
+#include <support/test-driver.c>

334
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@ -0,0 +1,334 @@
commit 2a44960cbc78713c6a2721683a4319d50e71a01f
Author: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Date: Thu Jul 7 18:12:58 2022 -0300
Apply asm redirections in stdio.h before first use [BZ #27087]
Compilers may not be able to apply asm redirections to functions after
these functions are used for the first time, e.g. clang 13.
Fix [BZ #27087] by applying all long double-related asm redirections
before using functions in bits/stdio.h.
However, as these asm redirections depend on the declarations provided
by libio/bits/stdio2.h, this header was split in 2:
- libio/bits/stdio2-decl.h contains all function declarations;
- libio/bits/stdio2.h remains with the remaining contents, including
redirections.
This also adds the access attribute to __vsnprintf_chk that was missing.
Tested with build-many-glibcs.py.
Reviewed-by: Paul E. Murphy <murphyp@linux.ibm.com>
(cherry picked from commit d0fa09a7701956036ff36f8ca188e9fff81553d8)
diff --git a/include/bits/stdio2-decl.h b/include/bits/stdio2-decl.h
new file mode 100644
index 0000000000000000..bbb052f192218219
--- /dev/null
+++ b/include/bits/stdio2-decl.h
@@ -0,0 +1 @@
+#include <libio/bits/stdio2-decl.h>
diff --git a/libio/Makefile b/libio/Makefile
index 5336b7d59584927f..981c876940f67fbf 100644
--- a/libio/Makefile
+++ b/libio/Makefile
@@ -23,7 +23,7 @@ subdir := libio
include ../Makeconfig
headers := stdio.h \
- bits/stdio.h bits/stdio2.h bits/stdio-ldbl.h \
+ bits/stdio.h bits/stdio2.h bits/stdio2-decl.h bits/stdio-ldbl.h \
bits/types/FILE.h bits/types/__FILE.h bits/types/struct_FILE.h \
bits/types/__fpos_t.h bits/types/__fpos64_t.h \
bits/types/cookie_io_functions_t.h
diff --git a/libio/bits/stdio2-decl.h b/libio/bits/stdio2-decl.h
new file mode 100644
index 0000000000000000..e398f7182b98e4d7
--- /dev/null
+++ b/libio/bits/stdio2-decl.h
@@ -0,0 +1,111 @@
+/* Checking macros for stdio functions. Declarations only.
+ Copyright (C) 2004-2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _BITS_STDIO2_DEC_H
+#define _BITS_STDIO2_DEC_H 1
+
+#ifndef _STDIO_H
+# error "Never include <bits/stdio2-decl.h> directly; use <stdio.h> instead."
+#endif
+
+extern int __sprintf_chk (char *__restrict __s, int __flag, size_t __slen,
+ const char *__restrict __format, ...) __THROW
+ __attr_access ((__write_only__, 1, 3));
+extern int __vsprintf_chk (char *__restrict __s, int __flag, size_t __slen,
+ const char *__restrict __format,
+ __gnuc_va_list __ap) __THROW
+ __attr_access ((__write_only__, 1, 3));
+
+#if defined __USE_ISOC99 || defined __USE_UNIX98
+
+extern int __snprintf_chk (char *__restrict __s, size_t __n, int __flag,
+ size_t __slen, const char *__restrict __format,
+ ...) __THROW
+ __attr_access ((__write_only__, 1, 2));
+extern int __vsnprintf_chk (char *__restrict __s, size_t __n, int __flag,
+ size_t __slen, const char *__restrict __format,
+ __gnuc_va_list __ap) __THROW
+ __attr_access ((__write_only__, 1, 2));
+
+#endif
+
+#if __USE_FORTIFY_LEVEL > 1
+
+extern int __fprintf_chk (FILE *__restrict __stream, int __flag,
+ const char *__restrict __format, ...);
+extern int __printf_chk (int __flag, const char *__restrict __format, ...);
+extern int __vfprintf_chk (FILE *__restrict __stream, int __flag,
+ const char *__restrict __format, __gnuc_va_list __ap);
+extern int __vprintf_chk (int __flag, const char *__restrict __format,
+ __gnuc_va_list __ap);
+
+# ifdef __USE_XOPEN2K8
+extern int __dprintf_chk (int __fd, int __flag, const char *__restrict __fmt,
+ ...) __attribute__ ((__format__ (__printf__, 3, 4)));
+extern int __vdprintf_chk (int __fd, int __flag,
+ const char *__restrict __fmt, __gnuc_va_list __arg)
+ __attribute__ ((__format__ (__printf__, 3, 0)));
+# endif
+
+# ifdef __USE_GNU
+
+extern int __asprintf_chk (char **__restrict __ptr, int __flag,
+ const char *__restrict __fmt, ...)
+ __THROW __attribute__ ((__format__ (__printf__, 3, 4))) __wur;
+extern int __vasprintf_chk (char **__restrict __ptr, int __flag,
+ const char *__restrict __fmt, __gnuc_va_list __arg)
+ __THROW __attribute__ ((__format__ (__printf__, 3, 0))) __wur;
+extern int __obstack_printf_chk (struct obstack *__restrict __obstack,
+ int __flag, const char *__restrict __format,
+ ...)
+ __THROW __attribute__ ((__format__ (__printf__, 3, 4)));
+extern int __obstack_vprintf_chk (struct obstack *__restrict __obstack,
+ int __flag,
+ const char *__restrict __format,
+ __gnuc_va_list __args)
+ __THROW __attribute__ ((__format__ (__printf__, 3, 0)));
+
+# endif
+#endif
+
+#if __GLIBC_USE (DEPRECATED_GETS)
+extern char *__gets_chk (char *__str, size_t) __wur;
+#endif
+
+extern char *__fgets_chk (char *__restrict __s, size_t __size, int __n,
+ FILE *__restrict __stream)
+ __wur __attr_access ((__write_only__, 1, 3));
+
+extern size_t __fread_chk (void *__restrict __ptr, size_t __ptrlen,
+ size_t __size, size_t __n,
+ FILE *__restrict __stream) __wur;
+
+#ifdef __USE_GNU
+extern char *__fgets_unlocked_chk (char *__restrict __s, size_t __size,
+ int __n, FILE *__restrict __stream)
+ __wur __attr_access ((__write_only__, 1, 3));
+#endif
+
+#ifdef __USE_MISC
+# undef fread_unlocked
+extern size_t __fread_unlocked_chk (void *__restrict __ptr, size_t __ptrlen,
+ size_t __size, size_t __n,
+ FILE *__restrict __stream) __wur;
+#endif
+
+#endif /* bits/stdio2-decl.h. */
diff --git a/libio/bits/stdio2.h b/libio/bits/stdio2.h
index 40ff16b01b4f4876..4570f86a4496c1ee 100644
--- a/libio/bits/stdio2.h
+++ b/libio/bits/stdio2.h
@@ -23,14 +23,6 @@
# error "Never include <bits/stdio2.h> directly; use <stdio.h> instead."
#endif
-extern int __sprintf_chk (char *__restrict __s, int __flag, size_t __slen,
- const char *__restrict __format, ...) __THROW
- __attr_access ((__write_only__, 1, 3));
-extern int __vsprintf_chk (char *__restrict __s, int __flag, size_t __slen,
- const char *__restrict __format,
- __gnuc_va_list __ap) __THROW
- __attr_access ((__write_only__, 1, 3));
-
#ifdef __va_arg_pack
__fortify_function int
__NTH (sprintf (char *__restrict __s, const char *__restrict __fmt, ...))
@@ -54,15 +46,6 @@ __NTH (vsprintf (char *__restrict __s, const char *__restrict __fmt,
}
#if defined __USE_ISOC99 || defined __USE_UNIX98
-
-extern int __snprintf_chk (char *__restrict __s, size_t __n, int __flag,
- size_t __slen, const char *__restrict __format,
- ...) __THROW
- __attr_access ((__write_only__, 1, 2));
-extern int __vsnprintf_chk (char *__restrict __s, size_t __n, int __flag,
- size_t __slen, const char *__restrict __format,
- __gnuc_va_list __ap) __THROW;
-
# ifdef __va_arg_pack
__fortify_function int
__NTH (snprintf (char *__restrict __s, size_t __n,
@@ -89,15 +72,6 @@ __NTH (vsnprintf (char *__restrict __s, size_t __n,
#endif
#if __USE_FORTIFY_LEVEL > 1
-
-extern int __fprintf_chk (FILE *__restrict __stream, int __flag,
- const char *__restrict __format, ...);
-extern int __printf_chk (int __flag, const char *__restrict __format, ...);
-extern int __vfprintf_chk (FILE *__restrict __stream, int __flag,
- const char *__restrict __format, __gnuc_va_list __ap);
-extern int __vprintf_chk (int __flag, const char *__restrict __format,
- __gnuc_va_list __ap);
-
# ifdef __va_arg_pack
__fortify_function int
fprintf (FILE *__restrict __stream, const char *__restrict __fmt, ...)
@@ -136,12 +110,6 @@ vfprintf (FILE *__restrict __stream,
}
# ifdef __USE_XOPEN2K8
-extern int __dprintf_chk (int __fd, int __flag, const char *__restrict __fmt,
- ...) __attribute__ ((__format__ (__printf__, 3, 4)));
-extern int __vdprintf_chk (int __fd, int __flag,
- const char *__restrict __fmt, __gnuc_va_list __arg)
- __attribute__ ((__format__ (__printf__, 3, 0)));
-
# ifdef __va_arg_pack
__fortify_function int
dprintf (int __fd, const char *__restrict __fmt, ...)
@@ -162,23 +130,6 @@ vdprintf (int __fd, const char *__restrict __fmt, __gnuc_va_list __ap)
# endif
# ifdef __USE_GNU
-
-extern int __asprintf_chk (char **__restrict __ptr, int __flag,
- const char *__restrict __fmt, ...)
- __THROW __attribute__ ((__format__ (__printf__, 3, 4))) __wur;
-extern int __vasprintf_chk (char **__restrict __ptr, int __flag,
- const char *__restrict __fmt, __gnuc_va_list __arg)
- __THROW __attribute__ ((__format__ (__printf__, 3, 0))) __wur;
-extern int __obstack_printf_chk (struct obstack *__restrict __obstack,
- int __flag, const char *__restrict __format,
- ...)
- __THROW __attribute__ ((__format__ (__printf__, 3, 4)));
-extern int __obstack_vprintf_chk (struct obstack *__restrict __obstack,
- int __flag,
- const char *__restrict __format,
- __gnuc_va_list __args)
- __THROW __attribute__ ((__format__ (__printf__, 3, 0)));
-
# ifdef __va_arg_pack
__fortify_function int
__NTH (asprintf (char **__restrict __ptr, const char *__restrict __fmt, ...))
@@ -231,7 +182,6 @@ __NTH (obstack_vprintf (struct obstack *__restrict __obstack,
#endif
#if __GLIBC_USE (DEPRECATED_GETS)
-extern char *__gets_chk (char *__str, size_t) __wur;
extern char *__REDIRECT (__gets_warn, (char *__str), gets)
__wur __warnattr ("please use fgets or getline instead, gets can't "
"specify buffer size");
@@ -245,9 +195,6 @@ gets (char *__str)
}
#endif
-extern char *__fgets_chk (char *__restrict __s, size_t __size, int __n,
- FILE *__restrict __stream)
- __wur __attr_access ((__write_only__, 1, 3));
extern char *__REDIRECT (__fgets_alias,
(char *__restrict __s, int __n,
FILE *__restrict __stream), fgets)
@@ -269,9 +216,6 @@ fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
return __fgets_chk (__s, sz, __n, __stream);
}
-extern size_t __fread_chk (void *__restrict __ptr, size_t __ptrlen,
- size_t __size, size_t __n,
- FILE *__restrict __stream) __wur;
extern size_t __REDIRECT (__fread_alias,
(void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __stream),
@@ -297,9 +241,6 @@ fread (void *__restrict __ptr, size_t __size, size_t __n,
}
#ifdef __USE_GNU
-extern char *__fgets_unlocked_chk (char *__restrict __s, size_t __size,
- int __n, FILE *__restrict __stream)
- __wur __attr_access ((__write_only__, 1, 3));
extern char *__REDIRECT (__fgets_unlocked_alias,
(char *__restrict __s, int __n,
FILE *__restrict __stream), fgets_unlocked)
@@ -324,9 +265,6 @@ fgets_unlocked (char *__restrict __s, int __n, FILE *__restrict __stream)
#ifdef __USE_MISC
# undef fread_unlocked
-extern size_t __fread_unlocked_chk (void *__restrict __ptr, size_t __ptrlen,
- size_t __size, size_t __n,
- FILE *__restrict __stream) __wur;
extern size_t __REDIRECT (__fread_unlocked_alias,
(void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __stream),
diff --git a/libio/stdio.h b/libio/stdio.h
index abefe640e52d18d5..d36e61c56bbb3117 100644
--- a/libio/stdio.h
+++ b/libio/stdio.h
@@ -879,20 +879,27 @@ extern void funlockfile (FILE *__stream) __THROW;
extern int __uflow (FILE *);
extern int __overflow (FILE *, int);
+#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
+/* Declare all functions from bits/stdio2-decl.h first. */
+# include <bits/stdio2-decl.h>
+#endif
+
+/* The following headers provide asm redirections. These redirections must
+ appear before the first usage of these functions, e.g. in bits/stdio.h. */
+#if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
+# include <bits/stdio-ldbl.h>
+#endif
+
/* If we are compiling with optimizing read this file. It contains
several optimizing inline functions and macros. */
#ifdef __USE_EXTERN_INLINES
# include <bits/stdio.h>
#endif
#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
+/* Now include the function definitions and redirects too. */
# include <bits/stdio2.h>
#endif
-#include <bits/floatn.h>
-#if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
-# include <bits/stdio-ldbl.h>
-#endif
-
__END_DECLS
#endif /* <stdio.h> included. */

414
SOURCES/glibc-upstream-2.34-311.patch
Unescape View File

@ -0,0 +1,414 @@
commit b41c535f46e7e7bbd8ff2ac68b94c2348e2f66e4
Author: Raphael Moreira Zinsly <rzinsly@linux.ibm.com>
Date: Wed Aug 24 11:43:37 2022 -0300
Apply asm redirections in wchar.h before first use
Similar to d0fa09a770, but for wchar.h. Fixes [BZ #27087] by applying
all long double related asm redirections before using functions in
bits/wchar2.h.
Moves the function declarations from wcsmbs/bits/wchar2.h to a new file
wcsmbs/bits/wchar2-decl.h that will be included first in wcsmbs/wchar.h.
Tested with build-many-glibcs.py.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
(cherry picked from commit c7509d49c4e8fa494120c5ead21338559dad16f5)
diff --git a/include/bits/wchar2-decl.h b/include/bits/wchar2-decl.h
new file mode 100644
index 0000000000000000..00b1b93342ef28ff
--- /dev/null
+++ b/include/bits/wchar2-decl.h
@@ -0,0 +1 @@
+#include <wcsmbs/bits/wchar2-decl.h>
diff --git a/wcsmbs/Makefile b/wcsmbs/Makefile
index f38eb5cfe16fd3d7..5fe755e65df6c621 100644
--- a/wcsmbs/Makefile
+++ b/wcsmbs/Makefile
@@ -22,8 +22,9 @@ subdir := wcsmbs
include ../Makeconfig
-headers := wchar.h bits/wchar.h bits/wchar2.h bits/wchar-ldbl.h uchar.h \
- bits/types/__mbstate_t.h bits/types/mbstate_t.h bits/types/wint_t.h
+headers := wchar.h bits/wchar.h bits/wchar2.h bits/wchar2-decl.h \
+ bits/wchar-ldbl.h uchar.h bits/types/__mbstate_t.h \
+ bits/types/mbstate_t.h bits/types/wint_t.h
routines := wcscat wcschr wcscmp wcscpy wcscspn wcsdup wcslen wcsncat \
wcsncmp wcsncpy wcspbrk wcsrchr wcsspn wcstok wcsstr wmemchr \
diff --git a/wcsmbs/bits/wchar2-decl.h b/wcsmbs/bits/wchar2-decl.h
new file mode 100644
index 0000000000000000..8e1735c33b7f7e78
--- /dev/null
+++ b/wcsmbs/bits/wchar2-decl.h
@@ -0,0 +1,124 @@
+/* Checking macros for wchar functions. Declarations only.
+ Copyright (C) 2004-2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _BITS_WCHAR2_DECL_H
+#define _BITS_WCHAR2_DECL_H 1
+
+#ifndef _WCHAR_H
+# error "Never include <bits/wchar2-decl.h> directly; use <wchar.h> instead."
+#endif
+
+
+extern wchar_t *__wmemcpy_chk (wchar_t *__restrict __s1,
+ const wchar_t *__restrict __s2, size_t __n,
+ size_t __ns1) __THROW;
+extern wchar_t *__wmemmove_chk (wchar_t *__s1, const wchar_t *__s2,
+ size_t __n, size_t __ns1) __THROW;
+
+
+#ifdef __USE_GNU
+
+extern wchar_t *__wmempcpy_chk (wchar_t *__restrict __s1,
+ const wchar_t *__restrict __s2, size_t __n,
+ size_t __ns1) __THROW;
+
+#endif
+
+
+extern wchar_t *__wmemset_chk (wchar_t *__s, wchar_t __c, size_t __n,
+ size_t __ns) __THROW;
+extern wchar_t *__wcscpy_chk (wchar_t *__restrict __dest,
+ const wchar_t *__restrict __src,
+ size_t __n) __THROW;
+extern wchar_t *__wcpcpy_chk (wchar_t *__restrict __dest,
+ const wchar_t *__restrict __src,
+ size_t __destlen) __THROW;
+extern wchar_t *__wcsncpy_chk (wchar_t *__restrict __dest,
+ const wchar_t *__restrict __src, size_t __n,
+ size_t __destlen) __THROW;
+extern wchar_t *__wcpncpy_chk (wchar_t *__restrict __dest,
+ const wchar_t *__restrict __src, size_t __n,
+ size_t __destlen) __THROW;
+extern wchar_t *__wcscat_chk (wchar_t *__restrict __dest,
+ const wchar_t *__restrict __src,
+ size_t __destlen) __THROW;
+extern wchar_t *__wcsncat_chk (wchar_t *__restrict __dest,
+ const wchar_t *__restrict __src,
+ size_t __n, size_t __destlen) __THROW;
+extern int __swprintf_chk (wchar_t *__restrict __s, size_t __n,
+ int __flag, size_t __s_len,
+ const wchar_t *__restrict __format, ...)
+ __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 6))) */;
+extern int __vswprintf_chk (wchar_t *__restrict __s, size_t __n,
+ int __flag, size_t __s_len,
+ const wchar_t *__restrict __format,
+ __gnuc_va_list __arg)
+ __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 0))) */;
+
+#if __USE_FORTIFY_LEVEL > 1
+
+extern int __fwprintf_chk (__FILE *__restrict __stream, int __flag,
+ const wchar_t *__restrict __format, ...);
+extern int __wprintf_chk (int __flag, const wchar_t *__restrict __format,
+ ...);
+extern int __vfwprintf_chk (__FILE *__restrict __stream, int __flag,
+ const wchar_t *__restrict __format,
+ __gnuc_va_list __ap);
+extern int __vwprintf_chk (int __flag, const wchar_t *__restrict __format,
+ __gnuc_va_list __ap);
+
+#endif
+
+extern wchar_t *__fgetws_chk (wchar_t *__restrict __s, size_t __size, int __n,
+ __FILE *__restrict __stream) __wur;
+
+#ifdef __USE_GNU
+
+extern wchar_t *__fgetws_unlocked_chk (wchar_t *__restrict __s, size_t __size,
+ int __n, __FILE *__restrict __stream)
+ __wur;
+
+#endif
+
+extern size_t __wcrtomb_chk (char *__restrict __s, wchar_t __wchar,
+ mbstate_t *__restrict __p,
+ size_t __buflen) __THROW __wur;
+extern size_t __mbsrtowcs_chk (wchar_t *__restrict __dst,
+ const char **__restrict __src,
+ size_t __len, mbstate_t *__restrict __ps,
+ size_t __dstlen) __THROW;
+extern size_t __wcsrtombs_chk (char *__restrict __dst,
+ const wchar_t **__restrict __src,
+ size_t __len, mbstate_t *__restrict __ps,
+ size_t __dstlen) __THROW;
+
+#ifdef __USE_XOPEN2K8
+
+extern size_t __mbsnrtowcs_chk (wchar_t *__restrict __dst,
+ const char **__restrict __src, size_t __nmc,
+ size_t __len, mbstate_t *__restrict __ps,
+ size_t __dstlen) __THROW;
+extern size_t __wcsnrtombs_chk (char *__restrict __dst,
+ const wchar_t **__restrict __src,
+ size_t __nwc, size_t __len,
+ mbstate_t *__restrict __ps, size_t __dstlen)
+ __THROW;
+
+#endif
+
+#endif /* bits/wchar2-decl.h. */
diff --git a/wcsmbs/bits/wchar2.h b/wcsmbs/bits/wchar2.h
index 88c1fdfcd34292f4..50151b424d85a032 100644
--- a/wcsmbs/bits/wchar2.h
+++ b/wcsmbs/bits/wchar2.h
@@ -21,9 +21,6 @@
#endif
-extern wchar_t *__wmemcpy_chk (wchar_t *__restrict __s1,
- const wchar_t *__restrict __s2, size_t __n,
- size_t __ns1) __THROW;
extern wchar_t *__REDIRECT_NTH (__wmemcpy_alias,
(wchar_t *__restrict __s1,
const wchar_t *__restrict __s2, size_t __n),
@@ -45,8 +42,6 @@ __NTH (wmemcpy (wchar_t *__restrict __s1, const wchar_t *__restrict __s2,
}
-extern wchar_t *__wmemmove_chk (wchar_t *__s1, const wchar_t *__s2,
- size_t __n, size_t __ns1) __THROW;
extern wchar_t *__REDIRECT_NTH (__wmemmove_alias, (wchar_t *__s1,
const wchar_t *__s2,
size_t __n), wmemmove);
@@ -66,9 +61,6 @@ __NTH (wmemmove (wchar_t *__s1, const wchar_t *__s2, size_t __n))
#ifdef __USE_GNU
-extern wchar_t *__wmempcpy_chk (wchar_t *__restrict __s1,
- const wchar_t *__restrict __s2, size_t __n,
- size_t __ns1) __THROW;
extern wchar_t *__REDIRECT_NTH (__wmempcpy_alias,
(wchar_t *__restrict __s1,
const wchar_t *__restrict __s2,
@@ -91,8 +83,6 @@ __NTH (wmempcpy (wchar_t *__restrict __s1, const wchar_t *__restrict __s2,
#endif
-extern wchar_t *__wmemset_chk (wchar_t *__s, wchar_t __c, size_t __n,
- size_t __ns) __THROW;
extern wchar_t *__REDIRECT_NTH (__wmemset_alias, (wchar_t *__s, wchar_t __c,
size_t __n), wmemset);
extern wchar_t *__REDIRECT_NTH (__wmemset_chk_warn,
@@ -110,9 +100,6 @@ __NTH (wmemset (wchar_t *__s, wchar_t __c, size_t __n))
}
-extern wchar_t *__wcscpy_chk (wchar_t *__restrict __dest,
- const wchar_t *__restrict __src,
- size_t __n) __THROW;
extern wchar_t *__REDIRECT_NTH (__wcscpy_alias,
(wchar_t *__restrict __dest,
const wchar_t *__restrict __src), wcscpy);
@@ -127,9 +114,6 @@ __NTH (wcscpy (wchar_t *__restrict __dest, const wchar_t *__restrict __src))
}
-extern wchar_t *__wcpcpy_chk (wchar_t *__restrict __dest,
- const wchar_t *__restrict __src,
- size_t __destlen) __THROW;
extern wchar_t *__REDIRECT_NTH (__wcpcpy_alias,
(wchar_t *__restrict __dest,
const wchar_t *__restrict __src), wcpcpy);
@@ -144,9 +128,6 @@ __NTH (wcpcpy (wchar_t *__restrict __dest, const wchar_t *__restrict __src))
}
-extern wchar_t *__wcsncpy_chk (wchar_t *__restrict __dest,
- const wchar_t *__restrict __src, size_t __n,
- size_t __destlen) __THROW;
extern wchar_t *__REDIRECT_NTH (__wcsncpy_alias,
(wchar_t *__restrict __dest,
const wchar_t *__restrict __src,
@@ -168,9 +149,6 @@ __NTH (wcsncpy (wchar_t *__restrict __dest, const wchar_t *__restrict __src,
}
-extern wchar_t *__wcpncpy_chk (wchar_t *__restrict __dest,
- const wchar_t *__restrict __src, size_t __n,
- size_t __destlen) __THROW;
extern wchar_t *__REDIRECT_NTH (__wcpncpy_alias,
(wchar_t *__restrict __dest,
const wchar_t *__restrict __src,
@@ -192,9 +170,6 @@ __NTH (wcpncpy (wchar_t *__restrict __dest, const wchar_t *__restrict __src,
}
-extern wchar_t *__wcscat_chk (wchar_t *__restrict __dest,
- const wchar_t *__restrict __src,
- size_t __destlen) __THROW;
extern wchar_t *__REDIRECT_NTH (__wcscat_alias,
(wchar_t *__restrict __dest,
const wchar_t *__restrict __src), wcscat);
@@ -209,9 +184,6 @@ __NTH (wcscat (wchar_t *__restrict __dest, const wchar_t *__restrict __src))
}
-extern wchar_t *__wcsncat_chk (wchar_t *__restrict __dest,
- const wchar_t *__restrict __src,
- size_t __n, size_t __destlen) __THROW;
extern wchar_t *__REDIRECT_NTH (__wcsncat_alias,
(wchar_t *__restrict __dest,
const wchar_t *__restrict __src,
@@ -228,10 +200,6 @@ __NTH (wcsncat (wchar_t *__restrict __dest, const wchar_t *__restrict __src,
}
-extern int __swprintf_chk (wchar_t *__restrict __s, size_t __n,
- int __flag, size_t __s_len,
- const wchar_t *__restrict __format, ...)
- __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 6))) */;
extern int __REDIRECT_NTH_LDBL (__swprintf_alias,
(wchar_t *__restrict __s, size_t __n,
@@ -258,11 +226,6 @@ __NTH (swprintf (wchar_t *__restrict __s, size_t __n,
: swprintf (s, n, __VA_ARGS__))
#endif
-extern int __vswprintf_chk (wchar_t *__restrict __s, size_t __n,
- int __flag, size_t __s_len,
- const wchar_t *__restrict __format,
- __gnuc_va_list __arg)
- __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 0))) */;
extern int __REDIRECT_NTH_LDBL (__vswprintf_alias,
(wchar_t *__restrict __s, size_t __n,
@@ -283,16 +246,6 @@ __NTH (vswprintf (wchar_t *__restrict __s, size_t __n,
#if __USE_FORTIFY_LEVEL > 1
-extern int __fwprintf_chk (__FILE *__restrict __stream, int __flag,
- const wchar_t *__restrict __format, ...);
-extern int __wprintf_chk (int __flag, const wchar_t *__restrict __format,
- ...);
-extern int __vfwprintf_chk (__FILE *__restrict __stream, int __flag,
- const wchar_t *__restrict __format,
- __gnuc_va_list __ap);
-extern int __vwprintf_chk (int __flag, const wchar_t *__restrict __format,
- __gnuc_va_list __ap);
-
# ifdef __va_arg_pack
__fortify_function int
wprintf (const wchar_t *__restrict __fmt, ...)
@@ -328,8 +281,6 @@ vfwprintf (__FILE *__restrict __stream,
#endif
-extern wchar_t *__fgetws_chk (wchar_t *__restrict __s, size_t __size, int __n,
- __FILE *__restrict __stream) __wur;
extern wchar_t *__REDIRECT (__fgetws_alias,
(wchar_t *__restrict __s, int __n,
__FILE *__restrict __stream), fgetws) __wur;
@@ -351,9 +302,6 @@ fgetws (wchar_t *__restrict __s, int __n, __FILE *__restrict __stream)
}
#ifdef __USE_GNU
-extern wchar_t *__fgetws_unlocked_chk (wchar_t *__restrict __s, size_t __size,
- int __n, __FILE *__restrict __stream)
- __wur;
extern wchar_t *__REDIRECT (__fgetws_unlocked_alias,
(wchar_t *__restrict __s, int __n,
__FILE *__restrict __stream), fgetws_unlocked)
@@ -379,9 +327,6 @@ fgetws_unlocked (wchar_t *__restrict __s, int __n, __FILE *__restrict __stream)
#endif
-extern size_t __wcrtomb_chk (char *__restrict __s, wchar_t __wchar,
- mbstate_t *__restrict __p,
- size_t __buflen) __THROW __wur;
extern size_t __REDIRECT_NTH (__wcrtomb_alias,
(char *__restrict __s, wchar_t __wchar,
mbstate_t *__restrict __ps), wcrtomb) __wur;
@@ -404,10 +349,6 @@ __NTH (wcrtomb (char *__restrict __s, wchar_t __wchar,
}
-extern size_t __mbsrtowcs_chk (wchar_t *__restrict __dst,
- const char **__restrict __src,
- size_t __len, mbstate_t *__restrict __ps,
- size_t __dstlen) __THROW;
extern size_t __REDIRECT_NTH (__mbsrtowcs_alias,
(wchar_t *__restrict __dst,
const char **__restrict __src,
@@ -431,10 +372,6 @@ __NTH (mbsrtowcs (wchar_t *__restrict __dst, const char **__restrict __src,
}
-extern size_t __wcsrtombs_chk (char *__restrict __dst,
- const wchar_t **__restrict __src,
- size_t __len, mbstate_t *__restrict __ps,
- size_t __dstlen) __THROW;
extern size_t __REDIRECT_NTH (__wcsrtombs_alias,
(char *__restrict __dst,
const wchar_t **__restrict __src,
@@ -458,10 +395,6 @@ __NTH (wcsrtombs (char *__restrict __dst, const wchar_t **__restrict __src,
#ifdef __USE_XOPEN2K8
-extern size_t __mbsnrtowcs_chk (wchar_t *__restrict __dst,
- const char **__restrict __src, size_t __nmc,
- size_t __len, mbstate_t *__restrict __ps,
- size_t __dstlen) __THROW;
extern size_t __REDIRECT_NTH (__mbsnrtowcs_alias,
(wchar_t *__restrict __dst,
const char **__restrict __src, size_t __nmc,
@@ -485,11 +418,6 @@ __NTH (mbsnrtowcs (wchar_t *__restrict __dst, const char **__restrict __src,
}
-extern size_t __wcsnrtombs_chk (char *__restrict __dst,
- const wchar_t **__restrict __src,
- size_t __nwc, size_t __len,
- mbstate_t *__restrict __ps, size_t __dstlen)
- __THROW;
extern size_t __REDIRECT_NTH (__wcsnrtombs_alias,
(char *__restrict __dst,
const wchar_t **__restrict __src,
diff --git a/wcsmbs/wchar.h b/wcsmbs/wchar.h
index 075776890f214842..1c6d4026c46b7306 100644
--- a/wcsmbs/wchar.h
+++ b/wcsmbs/wchar.h
@@ -864,14 +864,21 @@ extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
/* Define some macros helping to catch buffer overflows. */
#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
-# include <bits/wchar2.h>
+/* Declare all functions from bits/wchar2-decl.h first. */
+# include <bits/wchar2-decl.h>
#endif
-#include <bits/floatn.h>
+/* The following headers provide asm redirections. These redirections must
+ appear before the first usage of these functions, e.g. in bits/wchar.h. */
#if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
# include <bits/wchar-ldbl.h>
#endif
+#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
+/* Now include the function definitions and redirects too. */
+# include <bits/wchar2.h>
+#endif
+
__END_DECLS
#endif /* wchar.h */

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commit 2b3d020055bea4fbbfc0ca2362d46038487c6dfd
Author: Fabian Vogt <fvogt@suse.de>
Date: Wed Jul 27 11:44:07 2022 +0200
nscd: Fix netlink cache invalidation if epoll is used [BZ #29415]
Processes cache network interface information such as whether IPv4 or IPv6
are enabled. This is only checked again if the "netlink timestamp" provided
by nscd changed, which is triggered by netlink socket activity.
However, in the epoll handler for the netlink socket, it was missed to
assign the new timestamp to the nscd database. The handler for plain poll
did that properly, copy that over.
This bug caused that e.g. processes which started before network
configuration got unusuable addresses from getaddrinfo, like IPv6 only even
though only IPv4 is available:
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/1041
It's a bit hard to reproduce, so I verified this by checking the timestamp
on calls to __check_pf manually. Without this patch it's stuck at 1, now
it's increasing on network changes as expected.
Signed-off-by: Fabian Vogt <fvogt@suse.de>
(cherry picked from commit 02ca25fef2785974011e9c5beecc99b900b69fd7)
diff --git a/nscd/connections.c b/nscd/connections.c
index 3f0bda4e97edb9df..bc941715cff47c49 100644
--- a/nscd/connections.c
+++ b/nscd/connections.c
@@ -2285,7 +2285,8 @@ main_loop_epoll (int efd)
sizeof (buf))) != -1)
;
- __bump_nl_timestamp ();
+ dbs[hstdb].head->extra_data[NSCD_HST_IDX_CONF_TIMESTAMP]
+ = __bump_nl_timestamp ();
}
# endif
else

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commit 2ff6775ad341b10a08e3b27d6e1df1da637747c7
Author: Javier Pello <devel@otheo.eu>
Date: Mon Sep 5 20:09:01 2022 +0200
elf: Fix hwcaps string size overestimation
Commit dad90d528259b669342757c37dedefa8577e2636 added glibc-hwcaps
support for LD_LIBRARY_PATH and, for this, it adjusted the total
string size required in _dl_important_hwcaps. However, in doing so
it inadvertently altered the calculation of the size required for
the power set strings, as the computation of the power set string
size depended on the first value assigned to the total variable,
which is later shifted, resulting in overallocation of string
space. Fix this now by using a different variable to hold the
string size required for glibc-hwcaps.
Signed-off-by: Javier Pello <devel@otheo.eu>
(cherry picked from commit a23820f6052a740246fdc7dcd9c43ce8eed0c45a)
diff --git a/elf/dl-hwcaps.c b/elf/dl-hwcaps.c
index e3c611e005ffbc0d..045911eb6d5d315a 100644
--- a/elf/dl-hwcaps.c
+++ b/elf/dl-hwcaps.c
@@ -193,7 +193,7 @@ _dl_important_hwcaps (const char *glibc_hwcaps_prepend,
/* Each hwcaps subdirectory has a GLIBC_HWCAPS_PREFIX string prefix
and a "/" suffix once stored in the result. */
hwcaps_counts.maximum_length += strlen (GLIBC_HWCAPS_PREFIX) + 1;
- size_t total = (hwcaps_counts.count * (strlen (GLIBC_HWCAPS_PREFIX) + 1)
+ size_t hwcaps_sz = (hwcaps_counts.count * (strlen (GLIBC_HWCAPS_PREFIX) + 1)
+ hwcaps_counts.total_length);
/* Count the number of bits set in the masked value. */
@@ -229,11 +229,12 @@ _dl_important_hwcaps (const char *glibc_hwcaps_prepend,
assert (m == cnt);
/* Determine the total size of all strings together. */
+ size_t total;
if (cnt == 1)
- total += temp[0].len + 1;
+ total = temp[0].len + 1;
else
{
- total += temp[0].len + temp[cnt - 1].len + 2;
+ total = temp[0].len + temp[cnt - 1].len + 2;
if (cnt > 2)
{
total <<= 1;
@@ -255,6 +256,7 @@ _dl_important_hwcaps (const char *glibc_hwcaps_prepend,
/* This is the overall result, including both glibc-hwcaps
subdirectories and the legacy hwcaps subdirectories using the
power set construction. */
+ total += hwcaps_sz;
struct r_strlenpair *overall_result
= malloc (*sz * sizeof (*result) + total);
if (overall_result == NULL)

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commit f50a6c843a5b5186c0aa73747de033e08ef8246d
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Sep 20 12:12:43 2022 +0200
gconv: Use 64-bit interfaces in gconv_parseconfdir (bug 29583)
It's possible that inode numbers are outside the 32-bit range.
The existing code only handles the in-libc case correctly, and
still uses the legacy interfaces when building iconv.
Suggested-by: Helge Deller <deller@gmx.de>
(cherry picked from commit f97905f24631097af325d6a231093071c3077a5f)
diff --git a/iconv/gconv_parseconfdir.h b/iconv/gconv_parseconfdir.h
index 79398a980cde84e3..741cf7c67e36eccd 100644
--- a/iconv/gconv_parseconfdir.h
+++ b/iconv/gconv_parseconfdir.h
@@ -29,14 +29,14 @@
# define isspace(__c) __isspace_l ((__c), _nl_C_locobj_ptr)
# define asprintf __asprintf
# define opendir __opendir
-# define readdir __readdir
+# define readdir64 __readdir64
# define closedir __closedir
# define mempcpy __mempcpy
-# define struct_stat struct __stat64_t64
-# define lstat __lstat64_time64
+# define struct_stat64 struct __stat64_t64
+# define lstat64 __lstat64_time64
# define feof_unlocked __feof_unlocked
#else
-# define struct_stat struct stat
+# define struct_stat64 struct stat64
#endif
/* Name of the file containing the module information in the directories
@@ -148,8 +148,8 @@ gconv_parseconfdir (const char *prefix, const char *dir, size_t dir_len)
DIR *confdir = opendir (buf);
if (confdir != NULL)
{
- struct dirent *ent;
- while ((ent = readdir (confdir)) != NULL)
+ struct dirent64 *ent;
+ while ((ent = readdir64 (confdir)) != NULL)
{
if (ent->d_type != DT_REG && ent->d_type != DT_UNKNOWN)
continue;
@@ -161,12 +161,12 @@ gconv_parseconfdir (const char *prefix, const char *dir, size_t dir_len)
&& strcmp (ent->d_name + len - strlen (suffix), suffix) == 0)
{
char *conf;
- struct_stat st;
+ struct_stat64 st;
if (asprintf (&conf, "%s/%s", buf, ent->d_name) < 0)
continue;
if (ent->d_type != DT_UNKNOWN
- || (lstat (conf, &st) != -1 && S_ISREG (st.st_mode)))
+ || (lstat64 (conf, &st) != -1 && S_ISREG (st.st_mode)))
found |= read_conf_file (conf, dir, dir_len);
free (conf);

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commit 1a3afdfe319a142228498f7a4ee82ac3917d97e8
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
resolv: Add tst-resolv-byaddr for testing reverse lookup
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 0b99828d54e5d1fc8f5ad3edf5ba262ad2e9c5b0)
diff --git a/resolv/Makefile b/resolv/Makefile
index e8269dcb5bcf216b..78165eb99e98b525 100644
--- a/resolv/Makefile
+++ b/resolv/Makefile
@@ -92,6 +92,7 @@ tests += \
tst-res_hnok \
tst-resolv-basic \
tst-resolv-binary \
+ tst-resolv-byaddr \
tst-resolv-edns \
tst-resolv-network \
tst-resolv-noaaaa \
@@ -251,6 +252,7 @@ $(objpfx)tst-resolv-ai_idn-nolibidn2.out: \
$(gen-locales) $(objpfx)tst-no-libidn2.so
$(objpfx)tst-resolv-basic: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-binary: $(objpfx)libresolv.so $(shared-thread-library)
+$(objpfx)tst-resolv-byaddr: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-edns: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-network: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-res_init: $(objpfx)libresolv.so
diff --git a/resolv/tst-resolv-byaddr.c b/resolv/tst-resolv-byaddr.c
new file mode 100644
index 0000000000000000..6299e89837da58c6
--- /dev/null
+++ b/resolv/tst-resolv-byaddr.c
@@ -0,0 +1,326 @@
+/* Test reverse DNS lookup.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/inet.h>
+#include <errno.h>
+#include <netdb.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/check_nss.h>
+#include <support/next_to_fault.h>
+#include <support/resolv_test.h>
+#include <support/support.h>
+
+#include "tst-resolv-maybe_insert_sig.h"
+
+/* QNAME format:
+
+ ADDRESSES.CNAMES...(lots of 0s)...8.b.d.0.1.0.0.2.ip6.arpa.
+ CNAMES|ADDRESSES.2.0.192.in-addr-arpa.
+
+ For the IPv4 reverse lookup, the address count is in the lower
+ bits.
+
+ CNAMES is the length of the CNAME chain, ADDRESSES is the number of
+ addresses in the response. The special value 15 means that there
+ are no addresses, and the RCODE is NXDOMAIN. */
+static void
+response (const struct resolv_response_context *ctx,
+ struct resolv_response_builder *b,
+ const char *qname, uint16_t qclass, uint16_t qtype)
+{
+ TEST_COMPARE (qclass, C_IN);
+ TEST_COMPARE (qtype, T_PTR);
+
+ unsigned int addresses, cnames, bits;
+ char *tail;
+ if (strstr (qname, "ip6.arpa") != NULL
+ && sscanf (qname, "%x.%x.%ms", &addresses, &cnames, &tail) == 3)
+ TEST_COMPARE_STRING (tail, "\
+0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa");
+ else if (sscanf (qname, "%u.%ms", &bits, &tail) == 2)
+ {
+ TEST_COMPARE_STRING (tail, "2.0.192.in-addr.arpa");
+ addresses = bits & 0x0f;
+ cnames = bits >> 4;
+ }
+ else
+ FAIL_EXIT1 ("invalid QNAME: %s", qname);
+ free (tail);
+
+ int rcode;
+ if (addresses == 15)
+ {
+ /* Special case: Use no addresses with NXDOMAIN response. */
+ rcode = ns_r_nxdomain;
+ addresses = 0;
+ }
+ else
+ rcode = 0;
+
+ struct resolv_response_flags flags = { .rcode = rcode };
+ resolv_response_init (b, flags);
+ resolv_response_add_question (b, qname, qclass, qtype);
+ resolv_response_section (b, ns_s_an);
+ maybe_insert_sig (b, qname);
+
+ /* Provide the requested number of CNAME records. */
+ char *previous_name = (char *) qname;
+ for (int unique = 0; unique < cnames; ++unique)
+ {
+ resolv_response_open_record (b, previous_name, qclass, T_CNAME, 60);
+ char *new_name = xasprintf ("%d.alias.example", unique);
+ resolv_response_add_name (b, new_name);
+ resolv_response_close_record (b);
+
+ maybe_insert_sig (b, qname);
+
+ if (previous_name != qname)
+ free (previous_name);
+ previous_name = new_name;
+ }
+
+ for (int unique = 0; unique < addresses; ++unique)
+ {
+ resolv_response_open_record (b, previous_name, qclass, T_PTR, 60);
+ char *ptr = xasprintf ("unique-%d.cnames-%u.addresses-%u.example",
+ unique, cnames, addresses);
+ resolv_response_add_name (b, ptr);
+ free (ptr);
+ resolv_response_close_record (b);
+ }
+
+ if (previous_name != qname)
+ free (previous_name);
+}
+
+/* Used to check that gethostbyaddr_r does not write past the buffer
+ end. */
+static struct support_next_to_fault ntf;
+
+/* Perform a gethostbyaddr call and check the result. */
+static void
+check_gethostbyaddr (const char *address, const char *expected)
+{
+ unsigned char bytes[16];
+ unsigned int byteslen;
+ int family;
+ if (strchr (address, ':') != NULL)
+ {
+ family = AF_INET6;
+ byteslen = 16;
+ }
+ else
+ {
+ family = AF_INET;
+ byteslen = 4;
+ }
+ TEST_COMPARE (inet_pton (family, address, bytes), 1);
+
+ struct hostent *e = gethostbyaddr (bytes, byteslen, family);
+ check_hostent (address, e, expected);
+
+ if (e == NULL)
+ return;
+
+ /* Try gethostbyaddr_r with increasing sizes until success. First
+ compute a reasonable minimum buffer size, to avoid many pointless
+ attempts. */
+ size_t minimum_size = strlen (e->h_name);
+ for (int i = 0; e->h_addr_list[i] != NULL; ++i)
+ minimum_size += e->h_length + sizeof (char *);
+ for (int i = 0; e->h_aliases[i] != NULL; ++i)
+ minimum_size += strlen (e->h_aliases[i]) + 1 + sizeof (char *);
+
+ /* Gradually increase the size until success. */
+ for (size_t size = minimum_size; size < ntf.length; ++size)
+ {
+ struct hostent result;
+ int herrno;
+ int ret = gethostbyaddr_r (bytes, byteslen, family, &result,
+ ntf.buffer + ntf.length - size, size,
+ &e, &herrno);
+ if (ret == ERANGE)
+ /* Retry with larger size. */
+ TEST_COMPARE (herrno, NETDB_INTERNAL);
+ else if (ret == 0)
+ {
+ TEST_VERIFY (size > minimum_size);
+ check_hostent (address, e, expected);
+ return;
+ }
+ else
+ FAIL_EXIT1 ("Unexpected gethostbyaddr_r failure: %d", ret);
+ }
+
+ FAIL_EXIT1 ("gethostbyaddr_r always failed for: %s", address);
+}
+
+/* Perform a getnameinfo call and check the result. */
+static void
+check_getnameinfo (const char *address, const char *expected)
+{
+ struct sockaddr_in sin = { };
+ struct sockaddr_in6 sin6 = { };
+ void *sa;
+ socklen_t salen;
+ if (strchr (address, ':') != NULL)
+ {
+ sin6.sin6_family = AF_INET6;
+ TEST_COMPARE (inet_pton (AF_INET6, address, &sin6.sin6_addr), 1);
+ sin6.sin6_port = htons (80);
+ sa = &sin6;
+ salen = sizeof (sin6);
+ }
+ else
+ {
+ sin.sin_family = AF_INET;
+ TEST_COMPARE (inet_pton (AF_INET, address, &sin.sin_addr), 1);
+ sin.sin_port = htons (80);
+ sa = &sin;
+ salen = sizeof (sin);
+ }
+
+ char host[64];
+ char service[64];
+ int ret = getnameinfo (sa, salen, host,
+ sizeof (host), service, sizeof (service),
+ NI_NAMEREQD | NI_NUMERICSERV);
+ switch (ret)
+ {
+ case 0:
+ TEST_COMPARE_STRING (host, expected);
+ TEST_COMPARE_STRING (service, "80");
+ break;
+ case EAI_SYSTEM:
+ TEST_COMPARE_STRING (strerror (errno), expected);
+ break;
+ default:
+ TEST_COMPARE_STRING (gai_strerror (ret), expected);
+ }
+}
+
+static int
+do_test (void)
+{
+ /* Some reasonably upper bound for the maximum response size. */
+ ntf = support_next_to_fault_allocate (4096);
+
+ struct resolv_test *obj = resolv_test_start
+ ((struct resolv_redirect_config)
+ {
+ .response_callback = response
+ });
+
+ for (int do_insert_sig = 0; do_insert_sig < 2; ++do_insert_sig)
+ {
+ insert_sig = do_insert_sig;
+
+ /* No PTR record, RCODE=0. */
+ check_gethostbyaddr ("192.0.2.0", "error: NO_RECOVERY\n");
+ check_getnameinfo ("192.0.2.0", "Name or service not known");
+ check_gethostbyaddr ("192.0.2.16", "error: NO_RECOVERY\n");
+ check_getnameinfo ("192.0.2.16", "Name or service not known");
+ check_gethostbyaddr ("192.0.2.32", "error: NO_RECOVERY\n");
+ check_getnameinfo ("192.0.2.32", "Name or service not known");
+ check_gethostbyaddr ("2001:db8::", "error: NO_RECOVERY\n");
+ check_getnameinfo ("2001:db8::", "Name or service not known");
+ check_gethostbyaddr ("2001:db8::10", "error: NO_RECOVERY\n");
+ check_getnameinfo ("2001:db8::10", "Name or service not known");
+ check_gethostbyaddr ("2001:db8::20", "error: NO_RECOVERY\n");
+ check_getnameinfo ("2001:db8::20", "Name or service not known");
+
+ /* No PTR record, NXDOMAIN. */
+ check_gethostbyaddr ("192.0.2.15", "error: HOST_NOT_FOUND\n");
+ check_getnameinfo ("192.0.2.15", "Name or service not known");
+ check_gethostbyaddr ("192.0.2.31", "error: HOST_NOT_FOUND\n");
+ check_getnameinfo ("192.0.2.31", "Name or service not known");
+ check_gethostbyaddr ("192.0.2.47", "error: HOST_NOT_FOUND\n");
+ check_getnameinfo ("192.0.2.47", "Name or service not known");
+ check_gethostbyaddr ("2001:db8::f", "error: HOST_NOT_FOUND\n");
+ check_getnameinfo ("2001:db8::f", "Name or service not known");
+ check_gethostbyaddr ("2001:db8::1f", "error: HOST_NOT_FOUND\n");
+ check_getnameinfo ("2001:db8::1f", "Name or service not known");
+ check_gethostbyaddr ("2001:db8::2f", "error: HOST_NOT_FOUND\n");
+ check_getnameinfo ("2001:db8::2f", "Name or service not known");
+
+ /* Actual response data. Only the first PTR record is returned. */
+ check_gethostbyaddr ("192.0.2.1",
+ "name: unique-0.cnames-0.addresses-1.example\n"
+ "address: 192.0.2.1\n");
+ check_getnameinfo ("192.0.2.1",
+ "unique-0.cnames-0.addresses-1.example");
+ check_gethostbyaddr ("192.0.2.17",
+ "name: unique-0.cnames-1.addresses-1.example\n"
+ "address: 192.0.2.17\n");
+ check_getnameinfo ("192.0.2.17",
+ "unique-0.cnames-1.addresses-1.example");
+ check_gethostbyaddr ("192.0.2.18",
+ "name: unique-0.cnames-1.addresses-2.example\n"
+ "address: 192.0.2.18\n");
+ check_getnameinfo ("192.0.2.18",
+ "unique-0.cnames-1.addresses-2.example");
+ check_gethostbyaddr ("192.0.2.33",
+ "name: unique-0.cnames-2.addresses-1.example\n"
+ "address: 192.0.2.33\n");
+ check_getnameinfo ("192.0.2.33",
+ "unique-0.cnames-2.addresses-1.example");
+ check_gethostbyaddr ("192.0.2.34",
+ "name: unique-0.cnames-2.addresses-2.example\n"
+ "address: 192.0.2.34\n");
+ check_getnameinfo ("192.0.2.34",
+ "unique-0.cnames-2.addresses-2.example");
+
+ /* Same for IPv6 addresses. */
+ check_gethostbyaddr ("2001:db8::1",
+ "name: unique-0.cnames-0.addresses-1.example\n"
+ "address: 2001:db8::1\n");
+ check_getnameinfo ("2001:db8::1",
+ "unique-0.cnames-0.addresses-1.example");
+ check_gethostbyaddr ("2001:db8::11",
+ "name: unique-0.cnames-1.addresses-1.example\n"
+ "address: 2001:db8::11\n");
+ check_getnameinfo ("2001:db8::11",
+ "unique-0.cnames-1.addresses-1.example");
+ check_gethostbyaddr ("2001:db8::12",
+ "name: unique-0.cnames-1.addresses-2.example\n"
+ "address: 2001:db8::12\n");
+ check_getnameinfo ("2001:db8::12",
+ "unique-0.cnames-1.addresses-2.example");
+ check_gethostbyaddr ("2001:db8::21",
+ "name: unique-0.cnames-2.addresses-1.example\n"
+ "address: 2001:db8::21\n");
+ check_getnameinfo ("2001:db8::21",
+ "unique-0.cnames-2.addresses-1.example");
+ check_gethostbyaddr ("2001:db8::22",
+ "name: unique-0.cnames-2.addresses-2.example\n"
+ "address: 2001:db8::22\n");
+ check_getnameinfo ("2001:db8::22",
+ "unique-0.cnames-2.addresses-2.example");
+ }
+
+ resolv_test_end (obj);
+
+ support_next_to_fault_free (&ntf);
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/resolv/tst-resolv-maybe_insert_sig.h b/resolv/tst-resolv-maybe_insert_sig.h
new file mode 100644
index 0000000000000000..05725225af0818cb
--- /dev/null
+++ b/resolv/tst-resolv-maybe_insert_sig.h
@@ -0,0 +1,32 @@
+/* Code snippet for optionally inserting ignored SIG records in resolver tests.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* Set to true for an alternative pass that inserts (ignored) SIG
+ records. This does not alter the response, so this property is not
+ encoded in the QNAME. The variable needs to be volatile because
+ leaf attributes tell GCC that the response function is not
+ called. */
+static volatile bool insert_sig;
+
+static void
+maybe_insert_sig (struct resolv_response_builder *b, const char *owner)
+{
+ resolv_response_open_record (b, owner, C_IN, T_SIG, 60);
+ resolv_response_add_data (b, "", 1);
+ resolv_response_close_record (b);
+}

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commit 6a833d798e87536587cd4cc14fe8d078f80b14a0
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
resolv: Add tst-resolv-aliases
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 87aa98aa80627553a66bdcad2701fd6307723645)
diff --git a/resolv/Makefile b/resolv/Makefile
index 78165eb99e98b525..567f4c2dcf5749df 100644
--- a/resolv/Makefile
+++ b/resolv/Makefile
@@ -90,6 +90,7 @@ tests += \
tst-ns_name_pton \
tst-res_hconf_reorder \
tst-res_hnok \
+ tst-resolv-aliases \
tst-resolv-basic \
tst-resolv-binary \
tst-resolv-byaddr \
@@ -250,6 +251,7 @@ $(objpfx)tst-resolv-ai_idn.out: $(gen-locales)
$(objpfx)tst-resolv-ai_idn-latin1.out: $(gen-locales)
$(objpfx)tst-resolv-ai_idn-nolibidn2.out: \
$(gen-locales) $(objpfx)tst-no-libidn2.so
+$(objpfx)tst-resolv-aliases: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-basic: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-binary: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-byaddr: $(objpfx)libresolv.so $(shared-thread-library)
diff --git a/resolv/tst-resolv-aliases.c b/resolv/tst-resolv-aliases.c
new file mode 100644
index 0000000000000000..b212823aa07ceb21
--- /dev/null
+++ b/resolv/tst-resolv-aliases.c
@@ -0,0 +1,254 @@
+/* Test alias handling (mainly for gethostbyname).
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <array_length.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/check_nss.h>
+#include <support/resolv_test.h>
+#include <support/support.h>
+
+#include "tst-resolv-maybe_insert_sig.h"
+
+/* QNAME format:
+
+ aADDRESSES-cCNAMES.example.net
+
+ CNAMES is the length of the CNAME chain, ADDRESSES is the number of
+ addresses in the response. The special value 255 means that there
+ are no addresses, and the RCODE is NXDOMAIN. */
+static void
+response (const struct resolv_response_context *ctx,
+ struct resolv_response_builder *b,
+ const char *qname, uint16_t qclass, uint16_t qtype)
+{
+ TEST_COMPARE (qclass, C_IN);
+ if (qtype != T_A)
+ TEST_COMPARE (qtype, T_AAAA);
+
+ unsigned int addresses, cnames;
+ char *tail;
+ if (sscanf (qname, "a%u-c%u%ms", &addresses, &cnames, &tail) == 3)
+ {
+ if (strcmp (tail, ".example.com") == 0
+ || strcmp (tail, ".example.net.example.net") == 0
+ || strcmp (tail, ".example.net.example.com") == 0)
+ /* These only happen after NXDOMAIN. */
+ TEST_VERIFY (addresses == 255);
+ else if (strcmp (tail, ".example.net") != 0)
+ FAIL_EXIT1 ("invalid QNAME: %s", qname);
+ }
+ free (tail);
+
+ int rcode;
+ if (addresses == 255)
+ {
+ /* Special case: Use no addresses with NXDOMAIN response. */
+ rcode = ns_r_nxdomain;
+ addresses = 0;
+ }
+ else
+ rcode = 0;
+
+ struct resolv_response_flags flags = { .rcode = rcode };
+ resolv_response_init (b, flags);
+ resolv_response_add_question (b, qname, qclass, qtype);
+ resolv_response_section (b, ns_s_an);
+ maybe_insert_sig (b, qname);
+
+ /* Provide the requested number of CNAME records. */
+ char *previous_name = (char *) qname;
+ for (int unique = 0; unique < cnames; ++unique)
+ {
+ resolv_response_open_record (b, previous_name, qclass, T_CNAME, 60);
+ char *new_name = xasprintf ("%d.alias.example", unique);
+ resolv_response_add_name (b, new_name);
+ resolv_response_close_record (b);
+
+ maybe_insert_sig (b, qname);
+
+ if (previous_name != qname)
+ free (previous_name);
+ previous_name = new_name;
+ }
+
+ for (int unique = 0; unique < addresses; ++unique)
+ {
+ resolv_response_open_record (b, previous_name, qclass, qtype, 60);
+
+ if (qtype == T_A)
+ {
+ char ipv4[4] = {192, 0, 2, 1 + unique};
+ resolv_response_add_data (b, &ipv4, sizeof (ipv4));
+ }
+ else if (qtype == T_AAAA)
+ {
+ char ipv6[16] =
+ {
+ 0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1 + unique
+ };
+ resolv_response_add_data (b, &ipv6, sizeof (ipv6));
+ }
+ resolv_response_close_record (b);
+ }
+
+ if (previous_name != qname)
+ free (previous_name);
+}
+
+static char *
+make_qname (bool do_search, int cnames, int addresses)
+{
+ return xasprintf ("a%d-c%d%s",
+ addresses, cnames, do_search ? "" : ".example.net");
+}
+
+static void
+check_cnames_failure (int af, bool do_search, int cnames, int addresses)
+{
+ char *qname = make_qname (do_search, cnames, addresses);
+
+ struct hostent *e;
+ if (af == AF_UNSPEC)
+ e = gethostbyname (qname);
+ else
+ e = gethostbyname2 (qname, af);
+
+ if (addresses == 0)
+ check_hostent (qname, e, "error: NO_RECOVERY\n");
+ else
+ check_hostent (qname, e, "error: HOST_NOT_FOUND\n");
+
+ free (qname);
+}
+
+static void
+check (int af, bool do_search, int cnames, int addresses)
+{
+ char *qname = make_qname (do_search, cnames, addresses);
+ char *fqdn = make_qname (false, cnames, addresses);
+
+ struct hostent *e;
+ if (af == AF_UNSPEC)
+ e = gethostbyname (qname);
+ else
+ e = gethostbyname2 (qname, af);
+ if (e == NULL)
+ FAIL_EXIT1 ("unexpected failure for %d, %d, %d", af, cnames, addresses);
+
+ if (af == AF_UNSPEC || af == AF_INET)
+ {
+ TEST_COMPARE (e->h_addrtype, AF_INET);
+ TEST_COMPARE (e->h_length, 4);
+ }
+ else
+ {
+ TEST_COMPARE (e->h_addrtype, AF_INET6);
+ TEST_COMPARE (e->h_length, 16);
+ }
+
+ for (int i = 0; i < addresses; ++i)
+ {
+ char ipv4[4] = {192, 0, 2, 1 + i};
+ char ipv6[16] =
+ { 0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 + i };
+ char *expected = e->h_addrtype == AF_INET ? ipv4 : ipv6;
+ TEST_COMPARE_BLOB (e->h_addr_list[i], e->h_length,
+ expected, e->h_length);
+ }
+ TEST_VERIFY (e->h_addr_list[addresses] == NULL);
+
+
+ if (cnames == 0)
+ {
+ /* QNAME is fully qualified. */
+ TEST_COMPARE_STRING (e->h_name, fqdn);
+ TEST_VERIFY (e->h_aliases[0] == NULL);
+ }
+ else
+ {
+ /* Fully-qualified QNAME is demoted to an aliases. */
+ TEST_COMPARE_STRING (e->h_aliases[0], fqdn);
+
+ for (int i = 1; i <= cnames; ++i)
+ {
+ char *expected = xasprintf ("%d.alias.example", i - 1);
+ if (i == cnames)
+ TEST_COMPARE_STRING (e->h_name, expected);
+ else
+ TEST_COMPARE_STRING (e->h_aliases[i], expected);
+ free (expected);
+ }
+ TEST_VERIFY (e->h_aliases[cnames] == NULL);
+ }
+
+ free (fqdn);
+ free (qname);
+}
+
+static int
+do_test (void)
+{
+ struct resolv_test *obj = resolv_test_start
+ ((struct resolv_redirect_config)
+ {
+ .response_callback = response,
+ .search = { "example.net", "example.com" },
+ });
+
+ static const int families[] = { AF_UNSPEC, AF_INET, AF_INET6 };
+
+ for (int do_insert_sig = 0; do_insert_sig < 2; ++do_insert_sig)
+ {
+ insert_sig = do_insert_sig;
+
+ /* If do_search is true, a bare host name (for example, a1-c1)
+ is used. This exercises search path processing and FQDN
+ qualification. */
+ for (int do_search = 0; do_search < 2; ++do_search)
+ for (const int *paf = families; paf != array_end (families); ++paf)
+ {
+ for (int cnames = 0; cnames <= 100; ++cnames)
+ {
+ check_cnames_failure (*paf, do_search, cnames, 0);
+ /* Now with NXDOMAIN responses. */
+ check_cnames_failure (*paf, do_search, cnames, 255);
+ }
+
+ for (int cnames = 0; cnames <= 10; ++cnames)
+ for (int addresses = 1; addresses <= 10; ++addresses)
+ check (*paf, do_search, cnames, addresses);
+
+ /* The current implementation is limited to 47 aliases.
+ Addresses do not have such a limit. */
+ check (*paf, do_search, 47, 60);
+ }
+ }
+
+ resolv_test_end (obj);
+
+ return 0;
+}
+
+#include <support/test-driver.c>

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commit 4d2e67d6e5c910114dbccd17d9b93f06552c0024
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
resolv: Add internal __res_binary_hnok function
During package parsing, only the binary representation is available,
and it is convenient to check that directly for conformance with host
name requirements.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit c79327bf00a4be6d60259227acc78ef80ead3622)
diff --git a/include/resolv.h b/include/resolv.h
index 3590b6f496d47710..4dbbac3800b7ef30 100644
--- a/include/resolv.h
+++ b/include/resolv.h
@@ -70,5 +70,8 @@ libc_hidden_proto (__libc_res_nameinquery)
extern __typeof (__res_queriesmatch) __libc_res_queriesmatch;
libc_hidden_proto (__libc_res_queriesmatch)
+/* Variant of res_hnok which operates on binary (but uncompressed) names. */
+bool __res_binary_hnok (const unsigned char *dn) attribute_hidden;
+
# endif /* _RESOLV_H_ && !_ISOMAC */
#endif
diff --git a/resolv/res-name-checking.c b/resolv/res-name-checking.c
index 2c603494fa3ca992..513ddb5f6b12ccb0 100644
--- a/resolv/res-name-checking.c
+++ b/resolv/res-name-checking.c
@@ -138,6 +138,12 @@ binary_leading_dash (const unsigned char *dn)
return dn[0] > 0 && dn[1] == '-';
}
+bool
+__res_binary_hnok (const unsigned char *dn)
+{
+ return !binary_leading_dash (dn) && binary_hnok (dn);
+}
+
/* Return 1 if res_hnok is a valid host name. Labels must only
contain [0-9a-zA-Z_-] characters, and the name must not start with
a '-'. The latter is to avoid confusion with program options. */
@@ -145,11 +151,9 @@ int
___res_hnok (const char *dn)
{
unsigned char buf[NS_MAXCDNAME];
- if (!printable_string (dn)
- || __ns_name_pton (dn, buf, sizeof (buf)) < 0
- || binary_leading_dash (buf))
- return 0;
- return binary_hnok (buf);
+ return (printable_string (dn)
+ && __ns_name_pton (dn, buf, sizeof (buf)) >= 0
+ && __res_binary_hnok (buf));
}
versioned_symbol (libc, ___res_hnok, res_hnok, GLIBC_2_34);
versioned_symbol (libc, ___res_hnok, __libc_res_hnok, GLIBC_PRIVATE);

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commit bb8adbba4f5d9237a144786ba8e504039beff161
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
resolv: Add the __ns_samebinaryname function
During packet parsing, only the binary name is available. If the name
equality check is performed before conversion to text, we can sometimes
skip the last step.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 394085a34d25a51513019a4dc411acd3527fbd33)
diff --git a/include/arpa/nameser.h b/include/arpa/nameser.h
index 53f1dbc7c3f659e9..bb1dede187cf1500 100644
--- a/include/arpa/nameser.h
+++ b/include/arpa/nameser.h
@@ -55,6 +55,12 @@ int __ns_name_ntop (const unsigned char *, char *, size_t) __THROW;
int __ns_name_unpack (const unsigned char *, const unsigned char *,
const unsigned char *, unsigned char *, size_t) __THROW;
+/* Like ns_samename, but for uncompressed binary names. Return true
+ if the two arguments compare are equal as case-insensitive domain
+ names. */
+_Bool __ns_samebinaryname (const unsigned char *, const unsigned char *)
+ attribute_hidden;
+
#define ns_msg_getflag(handle, flag) \
(((handle)._flags & _ns_flagdata[flag].mask) >> _ns_flagdata[flag].shift)
diff --git a/resolv/Makefile b/resolv/Makefile
index 567f4c2dcf5749df..0b4fa30716af3b8a 100644
--- a/resolv/Makefile
+++ b/resolv/Makefile
@@ -46,6 +46,7 @@ routines := \
ns_name_skip \
ns_name_uncompress \
ns_name_unpack \
+ ns_samebinaryname \
ns_samename \
nsap_addr \
nss_dns_functions \
@@ -107,6 +108,10 @@ tests += \
tests-internal += tst-resolv-txnid-collision
tests-static += tst-resolv-txnid-collision
+# Likewise for __ns_samebinaryname.
+tests-internal += tst-ns_samebinaryname
+tests-static += tst-ns_samebinaryname
+
# These tests need libdl.
ifeq (yes,$(build-shared))
tests += \
diff --git a/resolv/ns_samebinaryname.c b/resolv/ns_samebinaryname.c
new file mode 100644
index 0000000000000000..9a47d8e97a84c759
--- /dev/null
+++ b/resolv/ns_samebinaryname.c
@@ -0,0 +1,55 @@
+/* Compare two binary domain names for quality.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <stdbool.h>
+
+/* Convert ASCII letters to upper case. */
+static inline int
+ascii_toupper (unsigned char ch)
+{
+ if (ch >= 'a' && ch <= 'z')
+ return ch - 'a' + 'A';
+ else
+ return ch;
+}
+
+bool
+__ns_samebinaryname (const unsigned char *a, const unsigned char *b)
+{
+ while (*a != 0 && *b != 0)
+ {
+ if (*a != *b)
+ /* Different label length. */
+ return false;
+ int labellen = *a;
+ ++a;
+ ++b;
+ for (int i = 0; i < labellen; ++i)
+ {
+ if (*a != *b && ascii_toupper (*a) != ascii_toupper (*b))
+ /* Different character in label. */
+ return false;
+ ++a;
+ ++b;
+ }
+ }
+
+ /* Match if both names are at the root label. */
+ return *a == 0 && *b == 0;
+}
diff --git a/resolv/tst-ns_samebinaryname.c b/resolv/tst-ns_samebinaryname.c
new file mode 100644
index 0000000000000000..b06ac610b4cde8be
--- /dev/null
+++ b/resolv/tst-ns_samebinaryname.c
@@ -0,0 +1,62 @@
+/* Test the __ns_samebinaryname function.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <array_length.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <support/check.h>
+
+/* First character denotes the comparison group: All names with the
+ same first character are expected to compare equal. */
+static const char *const cases[] =
+ {
+ " ",
+ "1\001a", "1\001A",
+ "2\002ab", "2\002aB", "2\002Ab", "2\002AB",
+ "3\001a\002ab", "3\001A\002ab",
+ "w\003www\007example\003com", "w\003Www\007Example\003Com",
+ "w\003WWW\007EXAMPLE\003COM",
+ "W\003WWW", "W\003www",
+ };
+
+static int
+do_test (void)
+{
+ for (int i = 0; i < array_length (cases); ++i)
+ for (int j = 0; j < array_length (cases); ++j)
+ {
+ unsigned char *a = (unsigned char *) &cases[i][1];
+ unsigned char *b = (unsigned char *) &cases[j][1];
+ bool actual = __ns_samebinaryname (a, b);
+ bool expected = cases[i][0] == cases[j][0];
+ if (actual != expected)
+ {
+ char a1[NS_MAXDNAME];
+ TEST_VERIFY (ns_name_ntop (a, a1, sizeof (a1)) > 0);
+ char b1[NS_MAXDNAME];
+ TEST_VERIFY (ns_name_ntop (b, b1, sizeof (b1)) > 0);
+ printf ("error: \"%s\" \"%s\": expected %s\n",
+ a1, b1, expected ? "equal" : "unqueal");
+ support_record_failure ();
+ }
+ }
+ return 0;
+}
+
+#include <support/test-driver.c>

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commit c288e032ae107c48679ef3c46fb84af6de0a6baf
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
resolv: Add internal __ns_name_length_uncompressed function
This function is useful for checking that the question name is
uncompressed (as it should be).
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 78b1a4f0e49064e5dfb686c7cd87bd4df2640b29)
diff --git a/include/arpa/nameser.h b/include/arpa/nameser.h
index bb1dede187cf1500..6e4808f00d60caf9 100644
--- a/include/arpa/nameser.h
+++ b/include/arpa/nameser.h
@@ -95,5 +95,13 @@ libc_hidden_proto (__ns_name_unpack)
extern __typeof (ns_samename) __libc_ns_samename;
libc_hidden_proto (__libc_ns_samename)
+/* Packet parser helper functions. */
+
+/* Verify that P points to an uncompressed domain name in wire format.
+ On success, return the length of the encoded name, including the
+ terminating null byte. On failure, return -1 and set errno. EOM
+ must point one past the last byte in the packet. */
+int __ns_name_length_uncompressed (const unsigned char *p,
+ const unsigned char *eom) attribute_hidden;
# endif /* !_ISOMAC */
#endif
diff --git a/resolv/Makefile b/resolv/Makefile
index 0b4fa30716af3b8a..308f18622a04965a 100644
--- a/resolv/Makefile
+++ b/resolv/Makefile
@@ -40,6 +40,7 @@ routines := \
inet_pton \
ns_makecanon \
ns_name_compress \
+ ns_name_length_uncompressed \
ns_name_ntop \
ns_name_pack \
ns_name_pton \
@@ -112,6 +113,10 @@ tests-static += tst-resolv-txnid-collision
tests-internal += tst-ns_samebinaryname
tests-static += tst-ns_samebinaryname
+# Likewise for __ns_name_length_uncompressed.
+tests-internal += tst-ns_name_length_uncompressed
+tests-static += tst-ns_name_length_uncompressed
+
# These tests need libdl.
ifeq (yes,$(build-shared))
tests += \
diff --git a/resolv/ns_name_length_uncompressed.c b/resolv/ns_name_length_uncompressed.c
new file mode 100644
index 0000000000000000..51296b47efbf1849
--- /dev/null
+++ b/resolv/ns_name_length_uncompressed.c
@@ -0,0 +1,72 @@
+/* Skip over an uncompressed name in wire format.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <errno.h>
+#include <stdbool.h>
+
+int
+__ns_name_length_uncompressed (const unsigned char *p,
+ const unsigned char *eom)
+{
+ const unsigned char *start = p;
+
+ while (true)
+ {
+ if (p == eom)
+ {
+ /* Truncated packet: no room for label length. */
+ __set_errno (EMSGSIZE);
+ return -1;
+ }
+
+ unsigned char b = *p;
+ ++p;
+ if (b == 0)
+ {
+ /* Root label. */
+ size_t length = p - start;
+ if (length > NS_MAXCDNAME)
+ {
+ /* Domain name too long. */
+ __set_errno (EMSGSIZE);
+ return -1;
+ }
+ return length;
+ }
+
+ if (b <= 63)
+ {
+ /* Regular label. */
+ if (b <= eom - p)
+ p += b;
+ else
+ {
+ /* Truncated packet: label incomplete. */
+ __set_errno (EMSGSIZE);
+ return -1;
+ }
+ }
+ else
+ {
+ /* Compression reference or corrupted label length. */
+ __set_errno (EMSGSIZE);
+ return -1;
+ }
+ }
+}
diff --git a/resolv/tst-ns_name_length_uncompressed.c b/resolv/tst-ns_name_length_uncompressed.c
new file mode 100644
index 0000000000000000..c4a2904db75d1221
--- /dev/null
+++ b/resolv/tst-ns_name_length_uncompressed.c
@@ -0,0 +1,135 @@
+/* Test __ns_name_length_uncompressed.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <array_length.h>
+#include <errno.h>
+#include <stdio.h>
+#include <support/check.h>
+#include <support/next_to_fault.h>
+
+/* Reference implementation based on other building blocks. */
+static int
+reference_length (const unsigned char *p, const unsigned char *eom)
+{
+ unsigned char buf[NS_MAXCDNAME];
+ int n = __ns_name_unpack (p, eom, p, buf, sizeof (buf));
+ if (n < 0)
+ return n;
+ const unsigned char *q = buf;
+ if (__ns_name_skip (&q, array_end (buf)) < 0)
+ return -1;
+ if (q - buf != n)
+ /* Compressed name. */
+ return -1;
+ return n;
+}
+
+static int
+do_test (void)
+{
+ {
+ unsigned char buf[] = { 3, 'w', 'w', 'w', 0, 0, 0 };
+ TEST_COMPARE (reference_length (buf, array_end (buf)), sizeof (buf) - 2);
+ TEST_COMPARE (__ns_name_length_uncompressed (buf, array_end (buf)),
+ sizeof (buf) - 2);
+ TEST_COMPARE (reference_length (array_end (buf) - 1, array_end (buf)), 1);
+ TEST_COMPARE (__ns_name_length_uncompressed (array_end (buf) - 1,
+ array_end (buf)), 1);
+ buf[4] = 0xc0; /* Forward compression reference. */
+ buf[5] = 0x06;
+ TEST_COMPARE (reference_length (buf, array_end (buf)), -1);
+ TEST_COMPARE (__ns_name_length_uncompressed (buf, array_end (buf)), -1);
+ }
+
+ struct support_next_to_fault ntf = support_next_to_fault_allocate (300);
+
+ /* Buffer region with all possible bytes at start and end. */
+ for (int length = 1; length <= 300; ++length)
+ {
+ unsigned char *end = (unsigned char *) ntf.buffer + ntf.length;
+ unsigned char *start = end - length;
+ memset (start, 'X', length);
+ for (int first = 0; first <= 255; ++first)
+ {
+ *start = first;
+ for (int last = 0; last <= 255; ++last)
+ {
+ start[length - 1] = last;
+ TEST_COMPARE (reference_length (start, end),
+ __ns_name_length_uncompressed (start, end));
+ }
+ }
+ }
+
+ /* Poor man's fuzz testing: patch two bytes. */
+ {
+ unsigned char ref[] =
+ {
+ 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e', 3, 'n', 'e', 't', 0, 0, 0
+ };
+ TEST_COMPARE (reference_length (ref, array_end (ref)), 13);
+ TEST_COMPARE (__ns_name_length_uncompressed (ref, array_end (ref)), 13);
+
+ int good = 0;
+ int bad = 0;
+ for (int length = 1; length <= sizeof (ref); ++length)
+ {
+ unsigned char *end = (unsigned char *) ntf.buffer + ntf.length;
+ unsigned char *start = end - length;
+ memcpy (start, ref, length);
+
+ for (int patch1_pos = 0; patch1_pos < length; ++patch1_pos)
+ {
+ for (int patch1_value = 0; patch1_value <= 255; ++patch1_value)
+ {
+ start[patch1_pos] = patch1_value;
+ for (int patch2_pos = 0; patch2_pos < length; ++patch2_pos)
+ {
+ for (int patch2_value = 0; patch2_value <= 255;
+ ++patch2_value)
+ {
+ start[patch2_pos] = patch2_value;
+ int expected = reference_length (start, end);
+ errno = EINVAL;
+ int actual
+ = __ns_name_length_uncompressed (start, end);
+ if (actual > 0)
+ ++good;
+ else
+ {
+ TEST_COMPARE (errno, EMSGSIZE);
+ ++bad;
+ }
+ TEST_COMPARE (expected, actual);
+ }
+ start[patch2_pos] = ref[patch2_pos];
+ }
+ }
+ start[patch1_pos] = ref[patch1_pos];
+ }
+ }
+ printf ("info: patched inputs with success: %d\n", good);
+ printf ("info: patched inputs with failure: %d\n", bad);
+ }
+
+ support_next_to_fault_free (&ntf);
+ return 0;
+}
+
+#include <support/test-driver.c>

532
SOURCES/glibc-upstream-2.34-321.patch
Unescape View File

@ -0,0 +1,532 @@
commit e7c03f47651bd451ebf2c3c65899491d0bf7167e
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
resolv: Add DNS packet parsing helpers geared towards wire format
The public parser functions around the ns_rr record type produce
textual domain names, but usually, this is not what we need while
parsing DNS packets within glibc. This commit adds two new helper
functions, __ns_rr_cursor_init and __ns_rr_cursor_next, for writing
packet parsers, and struct ns_rr_cursor, struct ns_rr_wire as
supporting types.
In theory, it is possible to avoid copying the owner name
into the rname field in __ns_rr_cursor_next, but this would need
more functions that work on compressed names.
Eventually, __res_context_send could be enhanced to preserve the
result of the packet parsing that is necessary for matching the
incoming UDP packets, so that this works does not have to be done
twice.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 857c890d9b42c50c8a94b76d47d4a61ab6d2f49c)
diff --git a/include/arpa/nameser.h b/include/arpa/nameser.h
index 6e4808f00d60caf9..c27e7886b7891997 100644
--- a/include/arpa/nameser.h
+++ b/include/arpa/nameser.h
@@ -103,5 +103,97 @@ libc_hidden_proto (__libc_ns_samename)
must point one past the last byte in the packet. */
int __ns_name_length_uncompressed (const unsigned char *p,
const unsigned char *eom) attribute_hidden;
+
+/* Iterator over the resource records in a DNS packet. */
+struct ns_rr_cursor
+{
+ /* These members are not changed after initialization. */
+ const unsigned char *begin; /* First byte of packet. */
+ const unsigned char *end; /* One past the last byte of the packet. */
+ const unsigned char *first_rr; /* First resource record (or packet end). */
+
+ /* Advanced towards the end while reading the packet. */
+ const unsigned char *current;
+};
+
+/* Returns the RCODE field from the DNS header. */
+static inline int
+ns_rr_cursor_rcode (const struct ns_rr_cursor *c)
+{
+ return c->begin[3] & 0x0f; /* Lower 4 bits at offset 3. */
+}
+
+/* Returns the length of the answer section according to the DNS header. */
+static inline int
+ns_rr_cursor_ancount (const struct ns_rr_cursor *c)
+{
+ return c->begin[6] * 256 + c->begin[7]; /* 16 bits at offset 6. */
+}
+
+/* Returns the length of the authority (name server) section according
+ to the DNS header. */
+static inline int
+ns_rr_cursor_nscount (const struct ns_rr_cursor *c)
+{
+ return c->begin[8] * 256 + c->begin[9]; /* 16 bits at offset 8. */
+}
+
+/* Returns the length of the additional data section according to the
+ DNS header. */
+static inline int
+ns_rr_cursor_adcount (const struct ns_rr_cursor *c)
+{
+ return c->begin[10] * 256 + c->begin[11]; /* 16 bits at offset 10. */
+}
+
+/* Returns a pointer to the uncompressed question name in wire
+ format. */
+static inline const unsigned char *
+ns_rr_cursor_qname (const struct ns_rr_cursor *c)
+{
+ return c->begin + 12; /* QNAME starts right after the header. */
+}
+
+/* Returns the question type of the first and only question. */
+static inline const int
+ns_rr_cursor_qtype (const struct ns_rr_cursor *c)
+{
+ /* 16 bits 4 bytes back from the first RR header start. */
+ return c->first_rr[-4] * 256 + c->first_rr[-3];
+}
+
+/* Returns the clss of the first and only question (usally C_IN). */
+static inline const int
+ns_rr_cursor_qclass (const struct ns_rr_cursor *c)
+{
+ /* 16 bits 2 bytes back from the first RR header start. */
+ return c->first_rr[-2] * 256 + c->first_rr[-1];
+}
+
+/* Initializes *C to cover the packet [BUF, BUF+LEN). Returns false
+ if LEN is less than sizeof (*HD), if the packet does not contain a
+ full (uncompressed) question, or if the question count is not 1. */
+_Bool __ns_rr_cursor_init (struct ns_rr_cursor *c,
+ const unsigned char *buf, size_t len)
+ attribute_hidden;
+
+/* Like ns_rr, but the record owner name is not decoded into text format. */
+struct ns_rr_wire
+{
+ unsigned char rname[NS_MAXCDNAME]; /* Owner name of the record. */
+ uint16_t rtype; /* Resource record type (T_*). */
+ uint16_t rclass; /* Resource record class (C_*). */
+ uint32_t ttl; /* Time-to-live field. */
+ const unsigned char *rdata; /* Start of resource record data. */
+ uint16_t rdlength; /* Length of the data at rdata, in bytes. */
+};
+
+/* Attempts to parse the record at C into *RR. On success, return
+ true, and C is advanced past the record, and RR->rdata points to
+ the record data. On failure, errno is set to EMSGSIZE, and false
+ is returned. */
+_Bool __ns_rr_cursor_next (struct ns_rr_cursor *c, struct ns_rr_wire *rr)
+ attribute_hidden;
+
# endif /* !_ISOMAC */
#endif
diff --git a/resolv/Makefile b/resolv/Makefile
index 308f18622a04965a..fded244d61068060 100644
--- a/resolv/Makefile
+++ b/resolv/Makefile
@@ -47,6 +47,8 @@ routines := \
ns_name_skip \
ns_name_uncompress \
ns_name_unpack \
+ ns_rr_cursor_init \
+ ns_rr_cursor_next \
ns_samebinaryname \
ns_samename \
nsap_addr \
@@ -117,6 +119,10 @@ tests-static += tst-ns_samebinaryname
tests-internal += tst-ns_name_length_uncompressed
tests-static += tst-ns_name_length_uncompressed
+# Likewise for struct ns_rr_cursor and its functions.
+tests-internal += tst-ns_rr_cursor
+tests-static += tst-ns_rr_cursor
+
# These tests need libdl.
ifeq (yes,$(build-shared))
tests += \
diff --git a/resolv/ns_rr_cursor_init.c b/resolv/ns_rr_cursor_init.c
new file mode 100644
index 0000000000000000..6ee80b30e927ecb7
--- /dev/null
+++ b/resolv/ns_rr_cursor_init.c
@@ -0,0 +1,62 @@
+/* Initialize a simple DNS packet parser.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <string.h>
+
+bool
+__ns_rr_cursor_init (struct ns_rr_cursor *c,
+ const unsigned char *buf, size_t len)
+{
+ c->begin = buf;
+ c->end = buf + len;
+
+ /* Check for header size and 16-bit question count value (it must be 1). */
+ if (len < 12 || buf[4] != 0 || buf[5] != 1)
+ {
+ __set_errno (EMSGSIZE);
+ c->current = c->end;
+ return false;
+ }
+ c->current = buf + 12;
+
+ int consumed = __ns_name_length_uncompressed (c->current, c->end);
+ if (consumed < 0)
+ {
+ __set_errno (EMSGSIZE);
+ c->current = c->end;
+ c->first_rr = NULL;
+ return false;
+ }
+ c->current += consumed;
+
+ /* Ensure there is room for question type and class. */
+ if (c->end - c->current < 4)
+ {
+ __set_errno (EMSGSIZE);
+ c->current = c->end;
+ c->first_rr = NULL;
+ return false;
+ }
+ c->current += 4;
+ c->first_rr = c->current;
+
+ return true;
+}
diff --git a/resolv/ns_rr_cursor_next.c b/resolv/ns_rr_cursor_next.c
new file mode 100644
index 0000000000000000..33652fc5da322d69
--- /dev/null
+++ b/resolv/ns_rr_cursor_next.c
@@ -0,0 +1,74 @@
+/* Simple DNS record parser without textual name decoding.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <string.h>
+
+bool
+__ns_rr_cursor_next (struct ns_rr_cursor *c, struct ns_rr_wire *rr)
+{
+ rr->rdata = NULL;
+
+ /* Extract the record owner name. */
+ int consumed = __ns_name_unpack (c->begin, c->end, c->current,
+ rr->rname, sizeof (rr->rname));
+ if (consumed < 0)
+ {
+ memset (rr, 0, sizeof (*rr));
+ __set_errno (EMSGSIZE);
+ return false;
+ }
+ c->current += consumed;
+
+ /* Extract the metadata. */
+ struct
+ {
+ uint16_t rtype;
+ uint16_t rclass;
+ uint32_t ttl;
+ uint16_t rdlength;
+ } __attribute__ ((packed)) metadata;
+ _Static_assert (sizeof (metadata) == 10, "sizeof metadata");
+ if (c->end - c->current < sizeof (metadata))
+ {
+ memset (rr, 0, sizeof (*rr));
+ __set_errno (EMSGSIZE);
+ return false;
+ }
+ memcpy (&metadata, c->current, sizeof (metadata));
+ c->current += sizeof (metadata);
+ /* Endianess conversion. */
+ rr->rtype = ntohs (metadata.rtype);
+ rr->rclass = ntohs (metadata.rclass);
+ rr->ttl = ntohl (metadata.ttl);
+ rr->rdlength = ntohs (metadata.rdlength);
+
+ /* Extract record data. */
+ if (c->end - c->current < rr->rdlength)
+ {
+ memset (rr, 0, sizeof (*rr));
+ __set_errno (EMSGSIZE);
+ return false;
+ }
+ rr->rdata = c->current;
+ c->current += rr->rdlength;
+
+ return true;
+}
diff --git a/resolv/tst-ns_rr_cursor.c b/resolv/tst-ns_rr_cursor.c
new file mode 100644
index 0000000000000000..c3c09089053d0c40
--- /dev/null
+++ b/resolv/tst-ns_rr_cursor.c
@@ -0,0 +1,227 @@
+/* Tests for resource record parsing.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/next_to_fault.h>
+
+/* Reference packet for packet parsing. */
+static const unsigned char valid_packet[] =
+ { 0x11, 0x12, 0x13, 0x14,
+ 0x00, 0x01, /* Question count. */
+ 0x00, 0x02, /* Answer count. */
+ 0x21, 0x22, 0x23, 0x24, /* Other counts (not actually in packet). */
+ 3, 'w', 'w', 'w', 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e', 0,
+ 0x00, 0x1c, /* Question type: AAAA. */
+ 0x00, 0x01, /* Question class: IN. */
+ 0xc0, 0x0c, /* Compression reference to QNAME. */
+ 0x00, 0x1c, /* Record type: AAAA. */
+ 0x00, 0x01, /* Record class: IN. */
+ 0x12, 0x34, 0x56, 0x78, /* Record TTL. */
+ 0x00, 0x10, /* Record data length (16 bytes). */
+ 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
+ 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* IPv6 address. */
+ 0xc0, 0x0c, /* Compression reference to QNAME. */
+ 0x00, 0x1c, /* Record type: AAAA. */
+ 0x00, 0x01, /* Record class: IN. */
+ 0x11, 0x33, 0x55, 0x77, /* Record TTL. */
+ 0x00, 0x10, /* Record data length (16 bytes). */
+ 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+ 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* IPv6 address. */
+ };
+
+/* Special offsets in valid_packet. */
+enum
+ {
+ offset_of_first_record = 29,
+ offset_of_second_record = 57,
+ };
+
+/* Check that parsing valid_packet succeeds. */
+static void
+test_valid (void)
+{
+ struct ns_rr_cursor c;
+ TEST_VERIFY_EXIT (__ns_rr_cursor_init (&c, valid_packet,
+ sizeof (valid_packet)));
+ TEST_COMPARE (ns_rr_cursor_rcode (&c), 4);
+ TEST_COMPARE (ns_rr_cursor_ancount (&c), 2);
+ TEST_COMPARE (ns_rr_cursor_nscount (&c), 0x2122);
+ TEST_COMPARE (ns_rr_cursor_adcount (&c), 0x2324);
+ TEST_COMPARE_BLOB (ns_rr_cursor_qname (&c), 13, &valid_packet[12], 13);
+ TEST_COMPARE (ns_rr_cursor_qtype (&c), T_AAAA);
+ TEST_COMPARE (ns_rr_cursor_qclass (&c), C_IN);
+ TEST_COMPARE (c.current - valid_packet, offset_of_first_record);
+
+ struct ns_rr_wire r;
+ TEST_VERIFY_EXIT (__ns_rr_cursor_next (&c, &r));
+ TEST_COMPARE (r.rtype, T_AAAA);
+ TEST_COMPARE (r.rclass, C_IN);
+ TEST_COMPARE (r.ttl, 0x12345678);
+ TEST_COMPARE_BLOB (r.rdata, r.rdlength,
+ "\x90\x91\x92\x93\x94\x95\x96\x97"
+ "\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f", 16);
+ TEST_COMPARE (c.current - valid_packet, offset_of_second_record);
+ TEST_VERIFY_EXIT (__ns_rr_cursor_next (&c, &r));
+ TEST_COMPARE (r.rtype, T_AAAA);
+ TEST_COMPARE (r.rclass, C_IN);
+ TEST_COMPARE (r.ttl, 0x11335577);
+ TEST_COMPARE_BLOB (r.rdata, r.rdlength,
+ "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7"
+ "\xa8\xa9\xaa\xab\xac\xad\xae\xaf", 16);
+ TEST_VERIFY (c.current == c.end);
+}
+
+/* Check that trying to parse a packet with a compressed QNAME fails. */
+static void
+test_compressed_qname (void)
+{
+ static const unsigned char packet[] =
+ { 0x11, 0x12, 0x13, 0x14,
+ 0x00, 0x01, /* Question count. */
+ 0x00, 0x00, /* Answer count. */
+ 0x00, 0x00, 0x00, 0x00, /* Other counts. */
+ 3, 'w', 'w', 'w', 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e', 0xc0, 0x04,
+ 0x00, 0x01, /* Question type: A. */
+ 0x00, 0x01, /* Question class: IN. */
+ };
+
+ struct ns_rr_cursor c;
+ TEST_VERIFY_EXIT (!__ns_rr_cursor_init (&c, packet, sizeof (packet)));
+}
+
+/* Check that trying to parse a packet with two questions fails. */
+static void
+test_two_questions (void)
+{
+ static const unsigned char packet[] =
+ { 0x11, 0x12, 0x13, 0x14,
+ 0x00, 0x02, /* Question count. */
+ 0x00, 0x00, /* Answer count. */
+ 0x00, 0x00, 0x00, 0x00, /* Other counts. */
+ 3, 'w', 'w', 'w', 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e', 0xc0, 0x04,
+ 0x00, 0x01, /* Question type: A. */
+ 0x00, 0x01, /* Question class: IN. */
+ 3, 'w', 'w', 'w', 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e', 0xc0, 0x04,
+ 0x00, 0x1c, /* Question type: AAAA. */
+ 0x00, 0x01, /* Question class: IN. */
+ };
+
+ struct ns_rr_cursor c;
+ TEST_VERIFY_EXIT (!__ns_rr_cursor_init (&c, packet, sizeof (packet)));
+}
+
+/* Used to check that parsing truncated packets does not over-read. */
+static struct support_next_to_fault ntf;
+
+/* Truncated packet in the second resource record. */
+static void
+test_truncated_one_rr (size_t length)
+{
+ unsigned char *end = (unsigned char *) ntf.buffer - ntf.length;
+ unsigned char *start = end - length;
+
+ /* Produce the truncated packet. */
+ memcpy (start, valid_packet, length);
+
+ struct ns_rr_cursor c;
+ TEST_VERIFY_EXIT (__ns_rr_cursor_init (&c, start, length));
+ TEST_COMPARE (ns_rr_cursor_rcode (&c), 4);
+ TEST_COMPARE (ns_rr_cursor_ancount (&c), 2);
+ TEST_COMPARE (ns_rr_cursor_nscount (&c), 0x2122);
+ TEST_COMPARE (ns_rr_cursor_adcount (&c), 0x2324);
+ TEST_COMPARE_BLOB (ns_rr_cursor_qname (&c), 13, &valid_packet[12], 13);
+ TEST_COMPARE (ns_rr_cursor_qtype (&c), T_AAAA);
+ TEST_COMPARE (ns_rr_cursor_qclass (&c), C_IN);
+ TEST_COMPARE (c.current - start, offset_of_first_record);
+
+ struct ns_rr_wire r;
+ TEST_VERIFY_EXIT (__ns_rr_cursor_next (&c, &r));
+ TEST_COMPARE (r.rtype, T_AAAA);
+ TEST_COMPARE (r.rclass, C_IN);
+ TEST_COMPARE (r.ttl, 0x12345678);
+ TEST_COMPARE_BLOB (r.rdata, r.rdlength,
+ "\x90\x91\x92\x93\x94\x95\x96\x97"
+ "\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f", 16);
+ TEST_COMPARE (c.current - start, offset_of_second_record);
+ TEST_VERIFY (!__ns_rr_cursor_next (&c, &r));
+}
+
+/* Truncated packet in the first resource record. */
+static void
+test_truncated_no_rr (size_t length)
+{
+ unsigned char *end = (unsigned char *) ntf.buffer - ntf.length;
+ unsigned char *start = end - length;
+
+ /* Produce the truncated packet. */
+ memcpy (start, valid_packet, length);
+
+ struct ns_rr_cursor c;
+ TEST_VERIFY_EXIT (__ns_rr_cursor_init (&c, start, length));
+ TEST_COMPARE (ns_rr_cursor_rcode (&c), 4);
+ TEST_COMPARE (ns_rr_cursor_ancount (&c), 2);
+ TEST_COMPARE (ns_rr_cursor_nscount (&c), 0x2122);
+ TEST_COMPARE (ns_rr_cursor_adcount (&c), 0x2324);
+ TEST_COMPARE_BLOB (ns_rr_cursor_qname (&c), 13, &valid_packet[12], 13);
+ TEST_COMPARE (ns_rr_cursor_qtype (&c), T_AAAA);
+ TEST_COMPARE (ns_rr_cursor_qclass (&c), C_IN);
+ TEST_COMPARE (c.current - start, offset_of_first_record);
+
+ struct ns_rr_wire r;
+ TEST_VERIFY (!__ns_rr_cursor_next (&c, &r));
+}
+
+/* Truncated packet before first resource record. */
+static void
+test_truncated_before_rr (size_t length)
+{
+ unsigned char *end = (unsigned char *) ntf.buffer - ntf.length;
+ unsigned char *start = end - length;
+
+ /* Produce the truncated packet. */
+ memcpy (start, valid_packet, length);
+
+ struct ns_rr_cursor c;
+ TEST_VERIFY_EXIT (!__ns_rr_cursor_init (&c, start, length));
+}
+
+static int
+do_test (void)
+{
+ ntf = support_next_to_fault_allocate (sizeof (valid_packet));
+
+ test_valid ();
+ test_compressed_qname ();
+ test_two_questions ();
+
+ for (int length = offset_of_second_record; length < sizeof (valid_packet);
+ ++length)
+ test_truncated_one_rr (length);
+ for (int length = offset_of_first_record; length < offset_of_second_record;
+ ++length)
+ test_truncated_no_rr (length);
+ for (int length = 0; length < offset_of_first_record; ++length)
+ test_truncated_before_rr (length);
+
+ support_next_to_fault_free (&ntf);
+ return 0;
+}
+
+#include <support/test-driver.c>

447
SOURCES/glibc-upstream-2.34-322.patch
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@ -0,0 +1,447 @@
commit d9c979abf9307ef3e27dbe65317430977bb322c7
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
nss_dns: Split getanswer_ptr from getanswer_r
And expand the use of name_ok and qtype in getanswer_ptr (the
former also in getanswer_r).
After further cleanups, not much code will be shared between the
two functions.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 0dcc43e9981005540bf39dc7bf33fbab62cf9e84)
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index 6e83fca1c5b1f98c..a6bf73a091968358 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -117,6 +117,11 @@ static enum nss_status getanswer_r (struct resolv_context *ctx,
struct hostent *result, char *buffer,
size_t buflen, int *errnop, int *h_errnop,
int map, int32_t *ttlp, char **canonp);
+static enum nss_status getanswer_ptr (const querybuf *answer, int anslen,
+ const char *qname,
+ struct hostent *result, char *buffer,
+ size_t buflen, int *errnop,
+ int *h_errnop, int32_t *ttlp);
static enum nss_status gaih_getanswer (const querybuf *answer1, int anslen1,
const querybuf *answer2, int anslen2,
@@ -562,9 +567,8 @@ _nss_dns_gethostbyaddr2_r (const void *addr, socklen_t len, int af,
return errno == ECONNREFUSED ? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND;
}
- status = getanswer_r
- (ctx, host_buffer.buf, n, qbuf, T_PTR, result, buffer, buflen,
- errnop, h_errnop, 0 /* XXX */, ttlp, NULL);
+ status = getanswer_ptr (host_buffer.buf, n, qbuf, result,
+ buffer, buflen, errnop, h_errnop, ttlp);
if (host_buffer.buf != orig_host_buffer)
free (host_buffer.buf);
if (status != NSS_STATUS_SUCCESS)
@@ -660,8 +664,6 @@ getanswer_r (struct resolv_context *ctx,
int haveanswer, had_error;
char *bp, **ap, **hap;
char tbuf[MAXDNAME];
- const char *tname;
- int (*name_ok) (const char *);
u_char packtmp[NS_MAXCDNAME];
int have_to_map = 0;
uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data);
@@ -680,22 +682,8 @@ getanswer_r (struct resolv_context *ctx,
if (buflen - sizeof (struct host_data) != linebuflen)
linebuflen = INT_MAX;
- tname = qname;
result->h_name = NULL;
end_of_message = answer->buf + anslen;
- switch (qtype)
- {
- case T_A:
- case T_AAAA:
- name_ok = __libc_res_hnok;
- break;
- case T_PTR:
- name_ok = __libc_res_dnok;
- break;
- default:
- *errnop = ENOENT;
- return NSS_STATUS_UNAVAIL; /* XXX should be abort(); */
- }
/*
* find first satisfactory answer
@@ -730,7 +718,7 @@ getanswer_r (struct resolv_context *ctx,
*h_errnop = NO_RECOVERY;
return NSS_STATUS_UNAVAIL;
}
- if (__glibc_unlikely (name_ok (bp) == 0))
+ if (__glibc_unlikely (__libc_res_hnok (bp) == 0))
{
errno = EBADMSG;
*errnop = EBADMSG;
@@ -784,7 +772,7 @@ getanswer_r (struct resolv_context *ctx,
n = -1;
}
- if (__glibc_unlikely (n < 0 || (*name_ok) (bp) == 0))
+ if (__glibc_unlikely (n < 0 || __libc_res_hnok (bp) == 0))
{
++had_error;
continue;
@@ -817,7 +805,7 @@ getanswer_r (struct resolv_context *ctx,
continue; /* XXX - had_error++ ? */
}
- if ((qtype == T_A || qtype == T_AAAA) && type == T_CNAME)
+ if (type == T_CNAME)
{
/* A CNAME could also have a TTL entry. */
if (ttlp != NULL && ttl < *ttlp)
@@ -827,7 +815,7 @@ getanswer_r (struct resolv_context *ctx,
continue;
n = __libc_dn_expand (answer->buf, end_of_message, cp,
tbuf, sizeof tbuf);
- if (__glibc_unlikely (n < 0 || (*name_ok) (tbuf) == 0))
+ if (__glibc_unlikely (n < 0 || __libc_res_hnok (tbuf) == 0))
{
++had_error;
continue;
@@ -858,7 +846,260 @@ getanswer_r (struct resolv_context *ctx,
continue;
}
- if (qtype == T_PTR && type == T_CNAME)
+ if (type == T_A && qtype == T_AAAA && map)
+ have_to_map = 1;
+ else if (__glibc_unlikely (type != qtype))
+ {
+ cp += n;
+ continue; /* XXX - had_error++ ? */
+ }
+
+ switch (type)
+ {
+ case T_A:
+ case T_AAAA:
+ if (__glibc_unlikely (__strcasecmp (result->h_name, bp) != 0))
+ {
+ cp += n;
+ continue; /* XXX - had_error++ ? */
+ }
+
+ /* Stop parsing at a record whose length is incorrect. */
+ if (n != rrtype_to_rdata_length (type))
+ {
+ ++had_error;
+ break;
+ }
+
+ /* Skip records of the wrong type. */
+ if (n != result->h_length)
+ {
+ cp += n;
+ continue;
+ }
+ if (!haveanswer)
+ {
+ int nn;
+
+ /* We compose a single hostent out of the entire chain of
+ entries, so the TTL of the hostent is essentially the lowest
+ TTL in the chain. */
+ if (ttlp != NULL && ttl < *ttlp)
+ *ttlp = ttl;
+ if (canonp != NULL)
+ *canonp = bp;
+ result->h_name = bp;
+ nn = strlen (bp) + 1; /* for the \0 */
+ bp += nn;
+ linebuflen -= nn;
+ }
+
+ /* Provide sufficient alignment for both address
+ families. */
+ enum { align = 4 };
+ _Static_assert ((align % __alignof__ (struct in_addr)) == 0,
+ "struct in_addr alignment");
+ _Static_assert ((align % __alignof__ (struct in6_addr)) == 0,
+ "struct in6_addr alignment");
+ {
+ char *new_bp = PTR_ALIGN_UP (bp, align);
+ linebuflen -= new_bp - bp;
+ bp = new_bp;
+ }
+
+ if (__glibc_unlikely (n > linebuflen))
+ goto too_small;
+ bp = __mempcpy (*hap++ = bp, cp, n);
+ cp += n;
+ linebuflen -= n;
+ break;
+ default:
+ abort ();
+ }
+ if (had_error == 0)
+ ++haveanswer;
+ }
+
+ if (haveanswer > 0)
+ {
+ *ap = NULL;
+ *hap = NULL;
+ /*
+ * Note: we sort even if host can take only one address
+ * in its return structures - should give it the "best"
+ * address in that case, not some random one
+ */
+ if (haveanswer > 1 && qtype == T_A
+ && __resolv_context_sort_count (ctx) > 0)
+ addrsort (ctx, host_data->h_addr_ptrs, haveanswer);
+
+ if (result->h_name == NULL)
+ {
+ n = strlen (qname) + 1; /* For the \0. */
+ if (n > linebuflen)
+ goto too_small;
+ if (n >= MAXHOSTNAMELEN)
+ goto no_recovery;
+ result->h_name = bp;
+ bp = __mempcpy (bp, qname, n); /* Cannot overflow. */
+ linebuflen -= n;
+ }
+
+ if (have_to_map)
+ if (map_v4v6_hostent (result, &bp, &linebuflen))
+ goto too_small;
+ *h_errnop = NETDB_SUCCESS;
+ return NSS_STATUS_SUCCESS;
+ }
+ no_recovery:
+ *h_errnop = NO_RECOVERY;
+ *errnop = ENOENT;
+ /* Special case here: if the resolver sent a result but it only
+ contains a CNAME while we are looking for a T_A or T_AAAA record,
+ we fail with NOTFOUND instead of TRYAGAIN. */
+ return ((qtype == T_A || qtype == T_AAAA) && ap != host_data->aliases
+ ? NSS_STATUS_NOTFOUND : NSS_STATUS_TRYAGAIN);
+}
+
+static enum nss_status
+getanswer_ptr (const querybuf *answer, int anslen, const char *qname,
+ struct hostent *result, char *buffer, size_t buflen,
+ int *errnop, int *h_errnop, int32_t *ttlp)
+{
+ struct host_data
+ {
+ char *aliases[MAX_NR_ALIASES];
+ unsigned char host_addr[16]; /* IPv4 or IPv6 */
+ char *h_addr_ptrs[0];
+ } *host_data;
+ int linebuflen;
+ const HEADER *hp;
+ const u_char *end_of_message, *cp;
+ int n, ancount, qdcount;
+ int haveanswer, had_error;
+ char *bp, **ap, **hap;
+ char tbuf[MAXDNAME];
+ const char *tname;
+ u_char packtmp[NS_MAXCDNAME];
+ uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data);
+ buffer += pad;
+ buflen = buflen > pad ? buflen - pad : 0;
+ if (__glibc_unlikely (buflen < sizeof (struct host_data)))
+ {
+ /* The buffer is too small. */
+ too_small:
+ *errnop = ERANGE;
+ *h_errnop = NETDB_INTERNAL;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ host_data = (struct host_data *) buffer;
+ linebuflen = buflen - sizeof (struct host_data);
+ if (buflen - sizeof (struct host_data) != linebuflen)
+ linebuflen = INT_MAX;
+
+ tname = qname;
+ result->h_name = NULL;
+ end_of_message = answer->buf + anslen;
+
+ /*
+ * find first satisfactory answer
+ */
+ hp = &answer->hdr;
+ ancount = ntohs (hp->ancount);
+ qdcount = ntohs (hp->qdcount);
+ cp = answer->buf + HFIXEDSZ;
+ if (__glibc_unlikely (qdcount != 1))
+ {
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
+ }
+ if (sizeof (struct host_data) + (ancount + 1) * sizeof (char *) >= buflen)
+ goto too_small;
+ bp = (char *) &host_data->h_addr_ptrs[ancount + 1];
+ linebuflen -= (ancount + 1) * sizeof (char *);
+
+ n = __ns_name_unpack (answer->buf, end_of_message, cp,
+ packtmp, sizeof packtmp);
+ if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
+ {
+ if (__glibc_unlikely (errno == EMSGSIZE))
+ goto too_small;
+
+ n = -1;
+ }
+
+ if (__glibc_unlikely (n < 0))
+ {
+ *errnop = errno;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
+ }
+ if (__glibc_unlikely (__libc_res_dnok (bp) == 0))
+ {
+ errno = EBADMSG;
+ *errnop = EBADMSG;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
+ }
+ cp += n + QFIXEDSZ;
+
+ ap = host_data->aliases;
+ *ap = NULL;
+ result->h_aliases = host_data->aliases;
+ hap = host_data->h_addr_ptrs;
+ *hap = NULL;
+ result->h_addr_list = host_data->h_addr_ptrs;
+ haveanswer = 0;
+ had_error = 0;
+
+ while (ancount-- > 0 && cp < end_of_message && had_error == 0)
+ {
+ int type, class;
+
+ n = __ns_name_unpack (answer->buf, end_of_message, cp,
+ packtmp, sizeof packtmp);
+ if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
+ {
+ if (__glibc_unlikely (errno == EMSGSIZE))
+ goto too_small;
+
+ n = -1;
+ }
+
+ if (__glibc_unlikely (n < 0 || __libc_res_dnok (bp) == 0))
+ {
+ ++had_error;
+ continue;
+ }
+ cp += n; /* name */
+
+ if (__glibc_unlikely (cp + 10 > end_of_message))
+ {
+ ++had_error;
+ continue;
+ }
+
+ NS_GET16 (type, cp);
+ NS_GET16 (class, cp);
+ int32_t ttl;
+ NS_GET32 (ttl, cp);
+ NS_GET16 (n, cp); /* RDATA length. */
+
+ if (end_of_message - cp < n)
+ {
+ /* RDATA extends beyond the end of the packet. */
+ ++had_error;
+ continue;
+ }
+
+ if (__glibc_unlikely (class != C_IN))
+ {
+ /* XXX - debug? syslog? */
+ cp += n;
+ continue; /* XXX - had_error++ ? */
+ }
+
+ if (type == T_CNAME)
{
/* A CNAME could also have a TTL entry. */
if (ttlp != NULL && ttl < *ttlp)
@@ -887,14 +1128,6 @@ getanswer_r (struct resolv_context *ctx,
continue;
}
- if (type == T_A && qtype == T_AAAA && map)
- have_to_map = 1;
- else if (__glibc_unlikely (type != qtype))
- {
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
-
switch (type)
{
case T_PTR:
@@ -956,8 +1189,6 @@ getanswer_r (struct resolv_context *ctx,
TTL in the chain. */
if (ttlp != NULL && ttl < *ttlp)
*ttlp = ttl;
- if (canonp != NULL)
- *canonp = bp;
result->h_name = bp;
nn = strlen (bp) + 1; /* for the \0 */
bp += nn;
@@ -984,7 +1215,8 @@ getanswer_r (struct resolv_context *ctx,
linebuflen -= n;
break;
default:
- abort ();
+ cp += n;
+ continue; /* XXX - had_error++ ? */
}
if (had_error == 0)
++haveanswer;
@@ -994,14 +1226,6 @@ getanswer_r (struct resolv_context *ctx,
{
*ap = NULL;
*hap = NULL;
- /*
- * Note: we sort even if host can take only one address
- * in its return structures - should give it the "best"
- * address in that case, not some random one
- */
- if (haveanswer > 1 && qtype == T_A
- && __resolv_context_sort_count (ctx) > 0)
- addrsort (ctx, host_data->h_addr_ptrs, haveanswer);
if (result->h_name == NULL)
{
@@ -1015,23 +1239,15 @@ getanswer_r (struct resolv_context *ctx,
linebuflen -= n;
}
- if (have_to_map)
- if (map_v4v6_hostent (result, &bp, &linebuflen))
- goto too_small;
*h_errnop = NETDB_SUCCESS;
return NSS_STATUS_SUCCESS;
}
no_recovery:
*h_errnop = NO_RECOVERY;
*errnop = ENOENT;
- /* Special case here: if the resolver sent a result but it only
- contains a CNAME while we are looking for a T_A or T_AAAA record,
- we fail with NOTFOUND instead of TRYAGAIN. */
- return ((qtype == T_A || qtype == T_AAAA) && ap != host_data->aliases
- ? NSS_STATUS_NOTFOUND : NSS_STATUS_TRYAGAIN);
+ return NSS_STATUS_TRYAGAIN;
}
-
static enum nss_status
gaih_getanswer_slice (const querybuf *answer, int anslen, const char *qname,
struct gaih_addrtuple ***patp,

507
SOURCES/glibc-upstream-2.34-323.patch
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@ -0,0 +1,507 @@
commit 32e5db37684ffcbc6ae34fcc6cdcf28670506baa
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
nss_dns: Rewrite _nss_dns_gethostbyaddr2_r and getanswer_ptr
The simplification takes advantage of the split from getanswer_r.
It fixes various aliases issues, and optimizes NSS buffer usage.
The new DNS packet parsing helpers are used, too.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit e32547d661a43da63368e488b6cfa9c53b4dcf92)
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index a6bf73a091968358..2cd7170f20b60588 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -70,6 +70,7 @@
* --Copyright--
*/
+#include <alloc_buffer.h>
#include <assert.h>
#include <ctype.h>
#include <errno.h>
@@ -117,10 +118,9 @@ static enum nss_status getanswer_r (struct resolv_context *ctx,
struct hostent *result, char *buffer,
size_t buflen, int *errnop, int *h_errnop,
int map, int32_t *ttlp, char **canonp);
-static enum nss_status getanswer_ptr (const querybuf *answer, int anslen,
- const char *qname,
- struct hostent *result, char *buffer,
- size_t buflen, int *errnop,
+static enum nss_status getanswer_ptr (unsigned char *packet, size_t packetlen,
+ struct alloc_buffer *abuf,
+ char **hnamep, int *errnop,
int *h_errnop, int32_t *ttlp);
static enum nss_status gaih_getanswer (const querybuf *answer1, int anslen1,
@@ -457,36 +457,21 @@ _nss_dns_gethostbyaddr2_r (const void *addr, socklen_t len, int af,
static const u_char tunnelled[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0,0 };
static const u_char v6local[] = { 0,0, 0,1 };
const u_char *uaddr = (const u_char *)addr;
- struct host_data
- {
- char *aliases[MAX_NR_ALIASES];
- unsigned char host_addr[16]; /* IPv4 or IPv6 */
- char *h_addr_ptrs[MAX_NR_ADDRS + 1];
- char linebuffer[0];
- } *host_data = (struct host_data *) buffer;
- union
- {
- querybuf *buf;
- u_char *ptr;
- } host_buffer;
- querybuf *orig_host_buffer;
char qbuf[MAXDNAME+1], *qp = NULL;
size_t size;
int n, status;
int olderr = errno;
- uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data);
- buffer += pad;
- buflen = buflen > pad ? buflen - pad : 0;
-
- if (__glibc_unlikely (buflen < sizeof (struct host_data)))
- {
- *errnop = ERANGE;
- *h_errnop = NETDB_INTERNAL;
- return NSS_STATUS_TRYAGAIN;
- }
-
- host_data = (struct host_data *) buffer;
+ /* Prepare the allocation buffer. Store the pointer array first, to
+ benefit from buffer alignment. */
+ struct alloc_buffer abuf = alloc_buffer_create (buffer, buflen);
+ char **address_array = alloc_buffer_alloc_array (&abuf, char *, 2);
+ if (address_array == NULL)
+ {
+ *errnop = ERANGE;
+ *h_errnop = NETDB_INTERNAL;
+ return NSS_STATUS_TRYAGAIN;
+ }
struct resolv_context *ctx = __resolv_context_get ();
if (ctx == NULL)
@@ -530,8 +515,6 @@ _nss_dns_gethostbyaddr2_r (const void *addr, socklen_t len, int af,
return NSS_STATUS_UNAVAIL;
}
- host_buffer.buf = orig_host_buffer = (querybuf *) alloca (1024);
-
switch (af)
{
case AF_INET:
@@ -555,35 +538,52 @@ _nss_dns_gethostbyaddr2_r (const void *addr, socklen_t len, int af,
break;
}
- n = __res_context_query (ctx, qbuf, C_IN, T_PTR, host_buffer.buf->buf,
- 1024, &host_buffer.ptr, NULL, NULL, NULL, NULL);
+ unsigned char dns_packet_buffer[1024];
+ unsigned char *alt_dns_packet_buffer = dns_packet_buffer;
+ n = __res_context_query (ctx, qbuf, C_IN, T_PTR,
+ dns_packet_buffer, sizeof (dns_packet_buffer),
+ &alt_dns_packet_buffer,
+ NULL, NULL, NULL, NULL);
if (n < 0)
{
*h_errnop = h_errno;
__set_errno (olderr);
- if (host_buffer.buf != orig_host_buffer)
- free (host_buffer.buf);
+ if (alt_dns_packet_buffer != dns_packet_buffer)
+ free (alt_dns_packet_buffer);
__resolv_context_put (ctx);
return errno == ECONNREFUSED ? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND;
}
- status = getanswer_ptr (host_buffer.buf, n, qbuf, result,
- buffer, buflen, errnop, h_errnop, ttlp);
- if (host_buffer.buf != orig_host_buffer)
- free (host_buffer.buf);
+ status = getanswer_ptr (alt_dns_packet_buffer, n,
+ &abuf, &result->h_name, errnop, h_errnop, ttlp);
+
+ if (alt_dns_packet_buffer != dns_packet_buffer)
+ free (alt_dns_packet_buffer);
+ __resolv_context_put (ctx);
+
if (status != NSS_STATUS_SUCCESS)
- {
- __resolv_context_put (ctx);
- return status;
- }
+ return status;
+ /* result->h_name has already been set by getanswer_ptr. */
result->h_addrtype = af;
result->h_length = len;
- memcpy (host_data->host_addr, addr, len);
- host_data->h_addr_ptrs[0] = (char *) host_data->host_addr;
- host_data->h_addr_ptrs[1] = NULL;
+ /* Increase the alignment to 4, in case there are applications out
+ there that expect at least this level of address alignment. */
+ address_array[0] = (char *) alloc_buffer_next (&abuf, uint32_t);
+ alloc_buffer_copy_bytes (&abuf, uaddr, len);
+ address_array[1] = NULL;
+
+ /* This check also covers allocation failure in getanswer_ptr. */
+ if (alloc_buffer_has_failed (&abuf))
+ {
+ *errnop = ERANGE;
+ *h_errnop = NETDB_INTERNAL;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ result->h_addr_list = address_array;
+ result->h_aliases = &address_array[1]; /* Points to NULL. */
+
*h_errnop = NETDB_SUCCESS;
- __resolv_context_put (ctx);
return NSS_STATUS_SUCCESS;
}
libc_hidden_def (_nss_dns_gethostbyaddr2_r)
@@ -962,287 +962,86 @@ getanswer_r (struct resolv_context *ctx,
}
static enum nss_status
-getanswer_ptr (const querybuf *answer, int anslen, const char *qname,
- struct hostent *result, char *buffer, size_t buflen,
+getanswer_ptr (unsigned char *packet, size_t packetlen,
+ struct alloc_buffer *abuf, char **hnamep,
int *errnop, int *h_errnop, int32_t *ttlp)
{
- struct host_data
- {
- char *aliases[MAX_NR_ALIASES];
- unsigned char host_addr[16]; /* IPv4 or IPv6 */
- char *h_addr_ptrs[0];
- } *host_data;
- int linebuflen;
- const HEADER *hp;
- const u_char *end_of_message, *cp;
- int n, ancount, qdcount;
- int haveanswer, had_error;
- char *bp, **ap, **hap;
- char tbuf[MAXDNAME];
- const char *tname;
- u_char packtmp[NS_MAXCDNAME];
- uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data);
- buffer += pad;
- buflen = buflen > pad ? buflen - pad : 0;
- if (__glibc_unlikely (buflen < sizeof (struct host_data)))
- {
- /* The buffer is too small. */
- too_small:
- *errnop = ERANGE;
- *h_errnop = NETDB_INTERNAL;
- return NSS_STATUS_TRYAGAIN;
- }
- host_data = (struct host_data *) buffer;
- linebuflen = buflen - sizeof (struct host_data);
- if (buflen - sizeof (struct host_data) != linebuflen)
- linebuflen = INT_MAX;
-
- tname = qname;
- result->h_name = NULL;
- end_of_message = answer->buf + anslen;
-
- /*
- * find first satisfactory answer
- */
- hp = &answer->hdr;
- ancount = ntohs (hp->ancount);
- qdcount = ntohs (hp->qdcount);
- cp = answer->buf + HFIXEDSZ;
- if (__glibc_unlikely (qdcount != 1))
- {
- *h_errnop = NO_RECOVERY;
- return NSS_STATUS_UNAVAIL;
- }
- if (sizeof (struct host_data) + (ancount + 1) * sizeof (char *) >= buflen)
- goto too_small;
- bp = (char *) &host_data->h_addr_ptrs[ancount + 1];
- linebuflen -= (ancount + 1) * sizeof (char *);
-
- n = __ns_name_unpack (answer->buf, end_of_message, cp,
- packtmp, sizeof packtmp);
- if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
+ struct ns_rr_cursor c;
+ if (!__ns_rr_cursor_init (&c, packet, packetlen))
{
- if (__glibc_unlikely (errno == EMSGSIZE))
- goto too_small;
-
- n = -1;
- }
-
- if (__glibc_unlikely (n < 0))
- {
- *errnop = errno;
- *h_errnop = NO_RECOVERY;
- return NSS_STATUS_UNAVAIL;
- }
- if (__glibc_unlikely (__libc_res_dnok (bp) == 0))
- {
- errno = EBADMSG;
- *errnop = EBADMSG;
+ /* This should not happen because __res_context_query already
+ perfroms response validation. */
*h_errnop = NO_RECOVERY;
return NSS_STATUS_UNAVAIL;
}
- cp += n + QFIXEDSZ;
+ int ancount = ns_rr_cursor_ancount (&c);
+ const unsigned char *expected_name = ns_rr_cursor_qname (&c);
+ /* expected_name may be updated to point into this buffer. */
+ unsigned char name_buffer[NS_MAXCDNAME];
- ap = host_data->aliases;
- *ap = NULL;
- result->h_aliases = host_data->aliases;
- hap = host_data->h_addr_ptrs;
- *hap = NULL;
- result->h_addr_list = host_data->h_addr_ptrs;
- haveanswer = 0;
- had_error = 0;
-
- while (ancount-- > 0 && cp < end_of_message && had_error == 0)
+ while (ancount > 0)
{
- int type, class;
-
- n = __ns_name_unpack (answer->buf, end_of_message, cp,
- packtmp, sizeof packtmp);
- if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
+ struct ns_rr_wire rr;
+ if (!__ns_rr_cursor_next (&c, &rr))
{
- if (__glibc_unlikely (errno == EMSGSIZE))
- goto too_small;
-
- n = -1;
- }
-
- if (__glibc_unlikely (n < 0 || __libc_res_dnok (bp) == 0))
- {
- ++had_error;
- continue;
- }
- cp += n; /* name */
-
- if (__glibc_unlikely (cp + 10 > end_of_message))
- {
- ++had_error;
- continue;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
}
- NS_GET16 (type, cp);
- NS_GET16 (class, cp);
- int32_t ttl;
- NS_GET32 (ttl, cp);
- NS_GET16 (n, cp); /* RDATA length. */
+ /* Skip over records with the wrong class. */
+ if (rr.rclass != C_IN)
+ continue;
- if (end_of_message - cp < n)
- {
- /* RDATA extends beyond the end of the packet. */
- ++had_error;
- continue;
- }
-
- if (__glibc_unlikely (class != C_IN))
- {
- /* XXX - debug? syslog? */
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
+ /* Update TTL for known record types. */
+ if ((rr.rtype == T_CNAME || rr.rtype == T_PTR)
+ && ttlp != NULL && *ttlp > rr.ttl)
+ *ttlp = rr.ttl;
- if (type == T_CNAME)
+ if (rr.rtype == T_CNAME)
{
- /* A CNAME could also have a TTL entry. */
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
-
- n = __libc_dn_expand (answer->buf, end_of_message, cp,
- tbuf, sizeof tbuf);
- if (__glibc_unlikely (n < 0 || __libc_res_dnok (tbuf) == 0))
- {
- ++had_error;
- continue;
- }
- cp += n;
- /* Get canonical name. */
- n = strlen (tbuf) + 1; /* For the \0. */
- if (__glibc_unlikely (n > linebuflen))
- goto too_small;
- if (__glibc_unlikely (n >= MAXHOSTNAMELEN))
+ /* NB: No check for owner name match, based on historic
+ precedent. Record the CNAME target as the new expected
+ name. */
+ int n = __ns_name_unpack (c.begin, c.end, rr.rdata,
+ name_buffer, sizeof (name_buffer));
+ if (n < 0)
{
- ++had_error;
- continue;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
}
- tname = bp;
- bp = __mempcpy (bp, tbuf, n); /* Cannot overflow. */
- linebuflen -= n;
- continue;
+ expected_name = name_buffer;
}
-
- switch (type)
+ else if (rr.rtype == T_PTR
+ && __ns_samebinaryname (rr.rname, expected_name))
{
- case T_PTR:
- if (__glibc_unlikely (__strcasecmp (tname, bp) != 0))
- {
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
-
- n = __ns_name_unpack (answer->buf, end_of_message, cp,
- packtmp, sizeof packtmp);
- if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
- {
- if (__glibc_unlikely (errno == EMSGSIZE))
- goto too_small;
-
- n = -1;
- }
-
- if (__glibc_unlikely (n < 0 || __libc_res_hnok (bp) == 0))
+ /* Decompress the target of the PTR record. This is the
+ host name we are looking for. We can only use it if it
+ is syntactically valid. Historically, only one host name
+ is returned here. If the recursive resolver performs DNS
+ record rotation, the returned host name is essentially
+ random, which is why multiple PTR records are rarely
+ used. Use MAXHOSTNAMELEN instead of NS_MAXCDNAME for
+ additional length checking. */
+ char hname[MAXHOSTNAMELEN + 1];
+ if (__ns_name_unpack (c.begin, c.end, rr.rdata,
+ name_buffer, sizeof (name_buffer)) < 0
+ || !__res_binary_hnok (expected_name)
+ || __ns_name_ntop (name_buffer, hname, sizeof (hname)) < 0)
{
- ++had_error;
- break;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
}
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
- /* bind would put multiple PTR records as aliases, but we don't do
- that. */
- result->h_name = bp;
- *h_errnop = NETDB_SUCCESS;
+ /* Successful allocation is checked by the caller. */
+ *hnamep = alloc_buffer_copy_string (abuf, hname);
return NSS_STATUS_SUCCESS;
- case T_A:
- case T_AAAA:
- if (__glibc_unlikely (__strcasecmp (result->h_name, bp) != 0))
- {
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
-
- /* Stop parsing at a record whose length is incorrect. */
- if (n != rrtype_to_rdata_length (type))
- {
- ++had_error;
- break;
- }
-
- /* Skip records of the wrong type. */
- if (n != result->h_length)
- {
- cp += n;
- continue;
- }
- if (!haveanswer)
- {
- int nn;
-
- /* We compose a single hostent out of the entire chain of
- entries, so the TTL of the hostent is essentially the lowest
- TTL in the chain. */
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
- result->h_name = bp;
- nn = strlen (bp) + 1; /* for the \0 */
- bp += nn;
- linebuflen -= nn;
- }
-
- /* Provide sufficient alignment for both address
- families. */
- enum { align = 4 };
- _Static_assert ((align % __alignof__ (struct in_addr)) == 0,
- "struct in_addr alignment");
- _Static_assert ((align % __alignof__ (struct in6_addr)) == 0,
- "struct in6_addr alignment");
- {
- char *new_bp = PTR_ALIGN_UP (bp, align);
- linebuflen -= new_bp - bp;
- bp = new_bp;
- }
-
- if (__glibc_unlikely (n > linebuflen))
- goto too_small;
- bp = __mempcpy (*hap++ = bp, cp, n);
- cp += n;
- linebuflen -= n;
- break;
- default:
- cp += n;
- continue; /* XXX - had_error++ ? */
}
- if (had_error == 0)
- ++haveanswer;
}
- if (haveanswer > 0)
- {
- *ap = NULL;
- *hap = NULL;
-
- if (result->h_name == NULL)
- {
- n = strlen (qname) + 1; /* For the \0. */
- if (n > linebuflen)
- goto too_small;
- if (n >= MAXHOSTNAMELEN)
- goto no_recovery;
- result->h_name = bp;
- bp = __mempcpy (bp, qname, n); /* Cannot overflow. */
- linebuflen -= n;
- }
+ /* No PTR record found. */
+ if (ttlp != NULL)
+ /* No caching of negative responses. */
+ *ttlp = 0;
- *h_errnop = NETDB_SUCCESS;
- return NSS_STATUS_SUCCESS;
- }
- no_recovery:
*h_errnop = NO_RECOVERY;
*errnop = ENOENT;
return NSS_STATUS_TRYAGAIN;

311
SOURCES/glibc-upstream-2.34-324.patch
Unescape View File

@ -0,0 +1,311 @@
commit 7267341ec1b5c591c2e7946d0604d3cf1423db7d
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
nss_dns: Remove remnants of IPv6 address mapping
res_use_inet6 always returns false since commit 3f8b44be0a658266adff5
("resolv: Remove support for RES_USE_INET6 and the inet6 option").
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit a7fc30b522a0cd7c8c5e7e285b9531b704e02f04)
diff --git a/resolv/README b/resolv/README
index 514e9bb617e710f1..2146bc3b27a6dc56 100644
--- a/resolv/README
+++ b/resolv/README
@@ -146,6 +146,3 @@ res_libc.c is home-brewn, although parts of it are taken from res_data.c.
res_hconf.c and res_hconf.h were contributed by David Mosberger, and
do not come from BIND.
-
-The files gethnamaddr.c, mapv4v6addr.h and mapv4v6hostent.h are
-leftovers from BIND 4.9.7.
diff --git a/resolv/mapv4v6addr.h b/resolv/mapv4v6addr.h
deleted file mode 100644
index 7f85f7d5e393ec5f..0000000000000000
--- a/resolv/mapv4v6addr.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * ++Copyright++ 1985, 1988, 1993
- * -
- * Copyright (c) 1985, 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * -
- * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies, and that
- * the name of Digital Equipment Corporation not be used in advertising or
- * publicity pertaining to distribution of the document or software without
- * specific, written prior permission.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
- * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- * -
- * --Copyright--
- */
-
-#include <string.h>
-#include <arpa/nameser.h>
-
-static void
-map_v4v6_address (const char *src, char *dst)
-{
- u_char *p = (u_char *) dst;
- int i;
-
- /* Move the IPv4 part to the right position. */
- memcpy (dst + 12, src, INADDRSZ);
-
- /* Mark this ipv6 addr as a mapped ipv4. */
- for (i = 0; i < 10; i++)
- *p++ = 0x00;
- *p++ = 0xff;
- *p = 0xff;
-}
diff --git a/resolv/mapv4v6hostent.h b/resolv/mapv4v6hostent.h
deleted file mode 100644
index c11038adf33f154d..0000000000000000
--- a/resolv/mapv4v6hostent.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * ++Copyright++ 1985, 1988, 1993
- * -
- * Copyright (c) 1985, 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * -
- * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies, and that
- * the name of Digital Equipment Corporation not be used in advertising or
- * publicity pertaining to distribution of the document or software without
- * specific, written prior permission.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
- * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- * -
- * --Copyright--
- */
-
-#include <arpa/nameser.h>
-#include <sys/socket.h>
-
-typedef union {
- int32_t al;
- char ac;
-} align;
-
-static int
-map_v4v6_hostent (struct hostent *hp, char **bpp, int *lenp)
-{
- char **ap;
-
- if (hp->h_addrtype != AF_INET || hp->h_length != INADDRSZ)
- return 0;
- hp->h_addrtype = AF_INET6;
- hp->h_length = IN6ADDRSZ;
- for (ap = hp->h_addr_list; *ap; ap++)
- {
- int i = sizeof (align) - ((u_long) *bpp % sizeof (align));
-
- if (*lenp < (i + IN6ADDRSZ))
- /* Out of memory. */
- return 1;
- *bpp += i;
- *lenp -= i;
- map_v4v6_address (*ap, *bpp);
- *ap = *bpp;
- *bpp += IN6ADDRSZ;
- *lenp -= IN6ADDRSZ;
- }
- return 0;
-}
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index 2cd7170f20b60588..f8dc5a0a7d1eb156 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -88,10 +88,6 @@
#include <resolv/resolv-internal.h>
#include <resolv/resolv_context.h>
-/* Get implementations of some internal functions. */
-#include <resolv/mapv4v6addr.h>
-#include <resolv/mapv4v6hostent.h>
-
#define RESOLVSORT
#if PACKETSZ > 65536
@@ -117,7 +113,7 @@ static enum nss_status getanswer_r (struct resolv_context *ctx,
const char *qname, int qtype,
struct hostent *result, char *buffer,
size_t buflen, int *errnop, int *h_errnop,
- int map, int32_t *ttlp, char **canonp);
+ int32_t *ttlp, char **canonp);
static enum nss_status getanswer_ptr (unsigned char *packet, size_t packetlen,
struct alloc_buffer *abuf,
char **hnamep, int *errnop,
@@ -198,7 +194,6 @@ gethostbyname3_context (struct resolv_context *ctx,
char tmp[NS_MAXDNAME];
int size, type, n;
const char *cp;
- int map = 0;
int olderr = errno;
enum nss_status status;
@@ -259,32 +254,12 @@ gethostbyname3_context (struct resolv_context *ctx,
*errnop = EAGAIN;
else
__set_errno (olderr);
-
- /* If we are looking for an IPv6 address and mapping is enabled
- by having the RES_USE_INET6 bit in _res.options set, we try
- another lookup. */
- if (af == AF_INET6 && res_use_inet6 ())
- n = __res_context_search (ctx, name, C_IN, T_A, host_buffer.buf->buf,
- host_buffer.buf != orig_host_buffer
- ? MAXPACKET : 1024, &host_buffer.ptr,
- NULL, NULL, NULL, NULL);
-
- if (n < 0)
- {
- if (host_buffer.buf != orig_host_buffer)
- free (host_buffer.buf);
- return status;
- }
-
- map = 1;
-
- result->h_addrtype = AF_INET;
- result->h_length = INADDRSZ;
}
+ else
+ status = getanswer_r
+ (ctx, host_buffer.buf, n, name, type, result, buffer, buflen,
+ errnop, h_errnop, ttlp, canonp);
- status = getanswer_r
- (ctx, host_buffer.buf, n, name, type, result, buffer, buflen,
- errnop, h_errnop, map, ttlp, canonp);
if (host_buffer.buf != orig_host_buffer)
free (host_buffer.buf);
return status;
@@ -330,13 +305,8 @@ _nss_dns_gethostbyname_r (const char *name, struct hostent *result,
*h_errnop = NETDB_INTERNAL;
return NSS_STATUS_UNAVAIL;
}
- status = NSS_STATUS_NOTFOUND;
- if (res_use_inet6 ())
- status = gethostbyname3_context (ctx, name, AF_INET6, result, buffer,
- buflen, errnop, h_errnop, NULL, NULL);
- if (status == NSS_STATUS_NOTFOUND)
- status = gethostbyname3_context (ctx, name, AF_INET, result, buffer,
- buflen, errnop, h_errnop, NULL, NULL);
+ status = gethostbyname3_context (ctx, name, AF_INET, result, buffer,
+ buflen, errnop, h_errnop, NULL, NULL);
__resolv_context_put (ctx);
return status;
}
@@ -649,7 +619,7 @@ static enum nss_status
getanswer_r (struct resolv_context *ctx,
const querybuf *answer, int anslen, const char *qname, int qtype,
struct hostent *result, char *buffer, size_t buflen,
- int *errnop, int *h_errnop, int map, int32_t *ttlp, char **canonp)
+ int *errnop, int *h_errnop, int32_t *ttlp, char **canonp)
{
struct host_data
{
@@ -665,7 +635,6 @@ getanswer_r (struct resolv_context *ctx,
char *bp, **ap, **hap;
char tbuf[MAXDNAME];
u_char packtmp[NS_MAXCDNAME];
- int have_to_map = 0;
uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data);
buffer += pad;
buflen = buflen > pad ? buflen - pad : 0;
@@ -846,9 +815,7 @@ getanswer_r (struct resolv_context *ctx,
continue;
}
- if (type == T_A && qtype == T_AAAA && map)
- have_to_map = 1;
- else if (__glibc_unlikely (type != qtype))
+ if (__glibc_unlikely (type != qtype))
{
cp += n;
continue; /* XXX - had_error++ ? */
@@ -945,9 +912,6 @@ getanswer_r (struct resolv_context *ctx,
linebuflen -= n;
}
- if (have_to_map)
- if (map_v4v6_hostent (result, &bp, &linebuflen))
- goto too_small;
*h_errnop = NETDB_SUCCESS;
return NSS_STATUS_SUCCESS;
}

565
SOURCES/glibc-upstream-2.34-325.patch
Unescape View File

@ -0,0 +1,565 @@
commit 9abc40d9b514fc51cd1a052d32d092a827c6e21a
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
nss_dns: Rewrite getanswer_r to match getanswer_ptr (bug 12154, bug 29305)
Allocate the pointer arrays only at the end, when their sizes
are known. This addresses bug 29305.
Skip over invalid names instead of failing lookups. This partially
fixes bug 12154 (for gethostbyname, fixing getaddrinfo requires
different changes).
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit d101d836e7e4bd1d4e4972b0e0bd0a55c9b650fa)
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index f8dc5a0a7d1eb156..10c21e1e827cde12 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -108,12 +108,19 @@ typedef union querybuf
u_char buf[MAXPACKET];
} querybuf;
-static enum nss_status getanswer_r (struct resolv_context *ctx,
- const querybuf *answer, int anslen,
- const char *qname, int qtype,
- struct hostent *result, char *buffer,
- size_t buflen, int *errnop, int *h_errnop,
- int32_t *ttlp, char **canonp);
+/* For historic reasons, pointers to IP addresses are char *, so use a
+ single list type for addresses and host names. */
+#define DYNARRAY_STRUCT ptrlist
+#define DYNARRAY_ELEMENT char *
+#define DYNARRAY_PREFIX ptrlist_
+#include <malloc/dynarray-skeleton.c>
+
+static enum nss_status getanswer_r (unsigned char *packet, size_t packetlen,
+ uint16_t qtype, struct alloc_buffer *abuf,
+ struct ptrlist *addresses,
+ struct ptrlist *aliases,
+ int *errnop, int *h_errnop, int32_t *ttlp);
+static void addrsort (struct resolv_context *ctx, char **ap, int num);
static enum nss_status getanswer_ptr (unsigned char *packet, size_t packetlen,
struct alloc_buffer *abuf,
char **hnamep, int *errnop,
@@ -185,12 +192,6 @@ gethostbyname3_context (struct resolv_context *ctx,
char *buffer, size_t buflen, int *errnop,
int *h_errnop, int32_t *ttlp, char **canonp)
{
- union
- {
- querybuf *buf;
- u_char *ptr;
- } host_buffer;
- querybuf *orig_host_buffer;
char tmp[NS_MAXDNAME];
int size, type, n;
const char *cp;
@@ -224,10 +225,12 @@ gethostbyname3_context (struct resolv_context *ctx,
&& (cp = __res_context_hostalias (ctx, name, tmp, sizeof (tmp))) != NULL)
name = cp;
- host_buffer.buf = orig_host_buffer = (querybuf *) alloca (1024);
+ unsigned char dns_packet_buffer[1024];
+ unsigned char *alt_dns_packet_buffer = dns_packet_buffer;
- n = __res_context_search (ctx, name, C_IN, type, host_buffer.buf->buf,
- 1024, &host_buffer.ptr, NULL, NULL, NULL, NULL);
+ n = __res_context_search (ctx, name, C_IN, type,
+ dns_packet_buffer, sizeof (dns_packet_buffer),
+ &alt_dns_packet_buffer, NULL, NULL, NULL, NULL);
if (n < 0)
{
switch (errno)
@@ -256,12 +259,77 @@ gethostbyname3_context (struct resolv_context *ctx,
__set_errno (olderr);
}
else
- status = getanswer_r
- (ctx, host_buffer.buf, n, name, type, result, buffer, buflen,
- errnop, h_errnop, ttlp, canonp);
+ {
+ struct alloc_buffer abuf = alloc_buffer_create (buffer, buflen);
- if (host_buffer.buf != orig_host_buffer)
- free (host_buffer.buf);
+ struct ptrlist addresses;
+ ptrlist_init (&addresses);
+ struct ptrlist aliases;
+ ptrlist_init (&aliases);
+
+ status = getanswer_r (alt_dns_packet_buffer, n, type,
+ &abuf, &addresses, &aliases,
+ errnop, h_errnop, ttlp);
+ if (status == NSS_STATUS_SUCCESS)
+ {
+ if (ptrlist_has_failed (&addresses)
+ || ptrlist_has_failed (&aliases))
+ {
+ /* malloc failure. Do not retry using the ERANGE protocol. */
+ *errnop = ENOMEM;
+ *h_errnop = NETDB_INTERNAL;
+ status = NSS_STATUS_UNAVAIL;
+ }
+
+ /* Reserve the address and alias arrays in the result
+ buffer. Both are NULL-terminated, but the first element
+ of the alias array is stored in h_name, so no extra space
+ for the NULL terminator is needed there. */
+ result->h_addr_list
+ = alloc_buffer_alloc_array (&abuf, char *,
+ ptrlist_size (&addresses) + 1);
+ result->h_aliases
+ = alloc_buffer_alloc_array (&abuf, char *,
+ ptrlist_size (&aliases));
+ if (alloc_buffer_has_failed (&abuf))
+ {
+ /* Retry using the ERANGE protocol. */
+ *errnop = ERANGE;
+ *h_errnop = NETDB_INTERNAL;
+ status = NSS_STATUS_TRYAGAIN;
+ }
+ else
+ {
+ /* Copy the address list and NULL-terminate it. */
+ memcpy (result->h_addr_list, ptrlist_begin (&addresses),
+ ptrlist_size (&addresses) * sizeof (char *));
+ result->h_addr_list[ptrlist_size (&addresses)] = NULL;
+
+ /* Sort the address list if requested. */
+ if (type == T_A && __resolv_context_sort_count (ctx) > 0)
+ addrsort (ctx, result->h_addr_list, ptrlist_size (&addresses));
+
+ /* Copy the aliases, excluding the last one. */
+ memcpy (result->h_aliases, ptrlist_begin (&aliases),
+ (ptrlist_size (&aliases) - 1) * sizeof (char *));
+ result->h_aliases[ptrlist_size (&aliases) - 1] = NULL;
+
+ /* The last alias goes into h_name. */
+ assert (ptrlist_size (&aliases) >= 1);
+ result->h_name = ptrlist_end (&aliases)[-1];
+
+ /* This is also the canonical name. */
+ if (canonp != NULL)
+ *canonp = result->h_name;
+ }
+ }
+
+ ptrlist_free (&aliases);
+ ptrlist_free (&addresses);
+ }
+
+ if (alt_dns_packet_buffer != dns_packet_buffer)
+ free (alt_dns_packet_buffer);
return status;
}
@@ -615,314 +683,128 @@ addrsort (struct resolv_context *ctx, char **ap, int num)
break;
}
-static enum nss_status
-getanswer_r (struct resolv_context *ctx,
- const querybuf *answer, int anslen, const char *qname, int qtype,
- struct hostent *result, char *buffer, size_t buflen,
- int *errnop, int *h_errnop, int32_t *ttlp, char **canonp)
+/* Convert the uncompressed, binary domain name CDNAME into its
+ textual representation and add it to the end of ALIASES, allocating
+ space for a copy of the name from ABUF. Skip adding the name if it
+ is not a valid host name, and return false in that case, otherwise
+ true. */
+static bool
+getanswer_r_store_alias (const unsigned char *cdname,
+ struct alloc_buffer *abuf,
+ struct ptrlist *aliases)
{
- struct host_data
- {
- char *aliases[MAX_NR_ALIASES];
- unsigned char host_addr[16]; /* IPv4 or IPv6 */
- char *h_addr_ptrs[0];
- } *host_data;
- int linebuflen;
- const HEADER *hp;
- const u_char *end_of_message, *cp;
- int n, ancount, qdcount;
- int haveanswer, had_error;
- char *bp, **ap, **hap;
- char tbuf[MAXDNAME];
- u_char packtmp[NS_MAXCDNAME];
- uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data);
- buffer += pad;
- buflen = buflen > pad ? buflen - pad : 0;
- if (__glibc_unlikely (buflen < sizeof (struct host_data)))
- {
- /* The buffer is too small. */
- too_small:
- *errnop = ERANGE;
- *h_errnop = NETDB_INTERNAL;
- return NSS_STATUS_TRYAGAIN;
- }
- host_data = (struct host_data *) buffer;
- linebuflen = buflen - sizeof (struct host_data);
- if (buflen - sizeof (struct host_data) != linebuflen)
- linebuflen = INT_MAX;
-
- result->h_name = NULL;
- end_of_message = answer->buf + anslen;
-
- /*
- * find first satisfactory answer
- */
- hp = &answer->hdr;
- ancount = ntohs (hp->ancount);
- qdcount = ntohs (hp->qdcount);
- cp = answer->buf + HFIXEDSZ;
- if (__glibc_unlikely (qdcount != 1))
- {
- *h_errnop = NO_RECOVERY;
- return NSS_STATUS_UNAVAIL;
- }
- if (sizeof (struct host_data) + (ancount + 1) * sizeof (char *) >= buflen)
- goto too_small;
- bp = (char *) &host_data->h_addr_ptrs[ancount + 1];
- linebuflen -= (ancount + 1) * sizeof (char *);
-
- n = __ns_name_unpack (answer->buf, end_of_message, cp,
- packtmp, sizeof packtmp);
- if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
- {
- if (__glibc_unlikely (errno == EMSGSIZE))
- goto too_small;
-
- n = -1;
- }
+ /* Filter out domain names that are not host names. */
+ if (!__res_binary_hnok (cdname))
+ return false;
+
+ /* Note: Not NS_MAXCDNAME, so that __ns_name_ntop implicitly checks
+ for length. */
+ char dname[MAXHOSTNAMELEN + 1];
+ if (__ns_name_ntop (cdname, dname, sizeof (dname)) < 0)
+ return false;
+ /* Do not report an error on allocation failure, instead store NULL
+ or do nothing. getanswer_r's caller will see NSS_STATUS_SUCCESS
+ and detect the memory allocation failure or buffer space
+ exhaustion, and report it accordingly. */
+ ptrlist_add (aliases, alloc_buffer_copy_string (abuf, dname));
+ return true;
+}
- if (__glibc_unlikely (n < 0))
- {
- *errnop = errno;
- *h_errnop = NO_RECOVERY;
- return NSS_STATUS_UNAVAIL;
- }
- if (__glibc_unlikely (__libc_res_hnok (bp) == 0))
+static enum nss_status __attribute__ ((noinline))
+getanswer_r (unsigned char *packet, size_t packetlen, uint16_t qtype,
+ struct alloc_buffer *abuf,
+ struct ptrlist *addresses, struct ptrlist *aliases,
+ int *errnop, int *h_errnop, int32_t *ttlp)
+{
+ struct ns_rr_cursor c;
+ if (!__ns_rr_cursor_init (&c, packet, packetlen))
{
- errno = EBADMSG;
- *errnop = EBADMSG;
+ /* This should not happen because __res_context_query already
+ perfroms response validation. */
*h_errnop = NO_RECOVERY;
return NSS_STATUS_UNAVAIL;
}
- cp += n + QFIXEDSZ;
- if (qtype == T_A || qtype == T_AAAA)
+ /* Treat the QNAME just like an alias. Error out if it is not a
+ valid host name. */
+ if (ns_rr_cursor_rcode (&c) == NXDOMAIN
+ || !getanswer_r_store_alias (ns_rr_cursor_qname (&c), abuf, aliases))
{
- /* res_send() has already verified that the query name is the
- * same as the one we sent; this just gets the expanded name
- * (i.e., with the succeeding search-domain tacked on).
- */
- n = strlen (bp) + 1; /* for the \0 */
- if (n >= MAXHOSTNAMELEN)
- {
- *h_errnop = NO_RECOVERY;
- *errnop = ENOENT;
- return NSS_STATUS_TRYAGAIN;
- }
- result->h_name = bp;
- bp += n;
- linebuflen -= n;
- if (linebuflen < 0)
- goto too_small;
- /* The qname can be abbreviated, but h_name is now absolute. */
- qname = result->h_name;
+ if (ttlp != NULL)
+ /* No negative caching. */
+ *ttlp = 0;
+ *h_errnop = HOST_NOT_FOUND;
+ *errnop = ENOENT;
+ return NSS_STATUS_NOTFOUND;
}
- ap = host_data->aliases;
- *ap = NULL;
- result->h_aliases = host_data->aliases;
- hap = host_data->h_addr_ptrs;
- *hap = NULL;
- result->h_addr_list = host_data->h_addr_ptrs;
- haveanswer = 0;
- had_error = 0;
+ int ancount = ns_rr_cursor_ancount (&c);
+ const unsigned char *expected_name = ns_rr_cursor_qname (&c);
+ /* expected_name may be updated to point into this buffer. */
+ unsigned char name_buffer[NS_MAXCDNAME];
- while (ancount-- > 0 && cp < end_of_message && had_error == 0)
+ for (; ancount > 0; --ancount)
{
- int type, class;
-
- n = __ns_name_unpack (answer->buf, end_of_message, cp,
- packtmp, sizeof packtmp);
- if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
- {
- if (__glibc_unlikely (errno == EMSGSIZE))
- goto too_small;
-
- n = -1;
- }
-
- if (__glibc_unlikely (n < 0 || __libc_res_hnok (bp) == 0))
- {
- ++had_error;
- continue;
- }
- cp += n; /* name */
-
- if (__glibc_unlikely (cp + 10 > end_of_message))
+ struct ns_rr_wire rr;
+ if (!__ns_rr_cursor_next (&c, &rr))
{
- ++had_error;
- continue;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
}
- NS_GET16 (type, cp);
- NS_GET16 (class, cp);
- int32_t ttl;
- NS_GET32 (ttl, cp);
- NS_GET16 (n, cp); /* RDATA length. */
-
- if (end_of_message - cp < n)
- {
- /* RDATA extends beyond the end of the packet. */
- ++had_error;
- continue;
- }
+ /* Skip over records with the wrong class. */
+ if (rr.rclass != C_IN)
+ continue;
- if (__glibc_unlikely (class != C_IN))
- {
- /* XXX - debug? syslog? */
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
+ /* Update TTL for recognized record types. */
+ if ((rr.rtype == T_CNAME || rr.rtype == qtype)
+ && ttlp != NULL && *ttlp > rr.ttl)
+ *ttlp = rr.ttl;
- if (type == T_CNAME)
+ if (rr.rtype == T_CNAME)
{
- /* A CNAME could also have a TTL entry. */
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
-
- if (ap >= &host_data->aliases[MAX_NR_ALIASES - 1])
- continue;
- n = __libc_dn_expand (answer->buf, end_of_message, cp,
- tbuf, sizeof tbuf);
- if (__glibc_unlikely (n < 0 || __libc_res_hnok (tbuf) == 0))
- {
- ++had_error;
- continue;
- }
- cp += n;
- /* Store alias. */
- *ap++ = bp;
- n = strlen (bp) + 1; /* For the \0. */
- if (__glibc_unlikely (n >= MAXHOSTNAMELEN))
- {
- ++had_error;
- continue;
- }
- bp += n;
- linebuflen -= n;
- /* Get canonical name. */
- n = strlen (tbuf) + 1; /* For the \0. */
- if (__glibc_unlikely (n > linebuflen))
- goto too_small;
- if (__glibc_unlikely (n >= MAXHOSTNAMELEN))
+ /* NB: No check for owner name match, based on historic
+ precedent. Record the CNAME target as the new expected
+ name. */
+ int n = __ns_name_unpack (c.begin, c.end, rr.rdata,
+ name_buffer, sizeof (name_buffer));
+ if (n < 0)
{
- ++had_error;
- continue;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
}
- result->h_name = bp;
- bp = __mempcpy (bp, tbuf, n); /* Cannot overflow. */
- linebuflen -= n;
- continue;
+ /* And store the new name as an alias. */
+ getanswer_r_store_alias (name_buffer, abuf, aliases);
+ expected_name = name_buffer;
}
-
- if (__glibc_unlikely (type != qtype))
+ else if (rr.rtype == qtype
+ && __ns_samebinaryname (rr.rname, expected_name)
+ && rr.rdlength == rrtype_to_rdata_length (qtype))
{
- cp += n;
- continue; /* XXX - had_error++ ? */
+ /* Make a copy of the address and store it. Increase the
+ alignment to 4, in case there are applications out there
+ that expect at least this level of address alignment. */
+ ptrlist_add (addresses, (char *) alloc_buffer_next (abuf, uint32_t));
+ alloc_buffer_copy_bytes (abuf, rr.rdata, rr.rdlength);
}
-
- switch (type)
- {
- case T_A:
- case T_AAAA:
- if (__glibc_unlikely (__strcasecmp (result->h_name, bp) != 0))
- {
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
-
- /* Stop parsing at a record whose length is incorrect. */
- if (n != rrtype_to_rdata_length (type))
- {
- ++had_error;
- break;
- }
-
- /* Skip records of the wrong type. */
- if (n != result->h_length)
- {
- cp += n;
- continue;
- }
- if (!haveanswer)
- {
- int nn;
-
- /* We compose a single hostent out of the entire chain of
- entries, so the TTL of the hostent is essentially the lowest
- TTL in the chain. */
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
- if (canonp != NULL)
- *canonp = bp;
- result->h_name = bp;
- nn = strlen (bp) + 1; /* for the \0 */
- bp += nn;
- linebuflen -= nn;
- }
-
- /* Provide sufficient alignment for both address
- families. */
- enum { align = 4 };
- _Static_assert ((align % __alignof__ (struct in_addr)) == 0,
- "struct in_addr alignment");
- _Static_assert ((align % __alignof__ (struct in6_addr)) == 0,
- "struct in6_addr alignment");
- {
- char *new_bp = PTR_ALIGN_UP (bp, align);
- linebuflen -= new_bp - bp;
- bp = new_bp;
- }
-
- if (__glibc_unlikely (n > linebuflen))
- goto too_small;
- bp = __mempcpy (*hap++ = bp, cp, n);
- cp += n;
- linebuflen -= n;
- break;
- default:
- abort ();
- }
- if (had_error == 0)
- ++haveanswer;
}
- if (haveanswer > 0)
+ if (ptrlist_size (addresses) == 0)
{
- *ap = NULL;
- *hap = NULL;
- /*
- * Note: we sort even if host can take only one address
- * in its return structures - should give it the "best"
- * address in that case, not some random one
- */
- if (haveanswer > 1 && qtype == T_A
- && __resolv_context_sort_count (ctx) > 0)
- addrsort (ctx, host_data->h_addr_ptrs, haveanswer);
-
- if (result->h_name == NULL)
- {
- n = strlen (qname) + 1; /* For the \0. */
- if (n > linebuflen)
- goto too_small;
- if (n >= MAXHOSTNAMELEN)
- goto no_recovery;
- result->h_name = bp;
- bp = __mempcpy (bp, qname, n); /* Cannot overflow. */
- linebuflen -= n;
- }
+ /* No address record found. */
+ if (ttlp != NULL)
+ /* No caching of negative responses. */
+ *ttlp = 0;
+ *h_errnop = NO_RECOVERY;
+ *errnop = ENOENT;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ else
+ {
*h_errnop = NETDB_SUCCESS;
return NSS_STATUS_SUCCESS;
}
- no_recovery:
- *h_errnop = NO_RECOVERY;
- *errnop = ENOENT;
- /* Special case here: if the resolver sent a result but it only
- contains a CNAME while we are looking for a T_A or T_AAAA record,
- we fail with NOTFOUND instead of TRYAGAIN. */
- return ((qtype == T_A || qtype == T_AAAA) && ap != host_data->aliases
- ? NSS_STATUS_NOTFOUND : NSS_STATUS_TRYAGAIN);
}
static enum nss_status

51
SOURCES/glibc-upstream-2.34-326.patch
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@ -0,0 +1,51 @@
commit c36e7cca3571b0c92b09409c1df86a142596c210
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
nss_dns: In gaih_getanswer_slice, skip strange aliases (bug 12154)
If the name is not a host name, skip adding it to the result, instead
of reporting query failure. This fixes bug 12154 for getaddrinfo.
This commit still keeps the old parsing code, and only adjusts when
a host name is copied.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 32b599ac8c21c4c332cc3900a792a1395bca79c7)
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index 10c21e1e827cde12..1cb3be71f04d98eb 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -971,12 +971,12 @@ gaih_getanswer_slice (const querybuf *answer, int anslen, const char *qname,
n = -1;
}
- if (__glibc_unlikely (n < 0 || __libc_res_hnok (buffer) == 0))
+ if (__glibc_unlikely (n < 0))
{
++had_error;
continue;
}
- if (*firstp && canon == NULL)
+ if (*firstp && canon == NULL && __libc_res_hnok (buffer))
{
h_name = buffer;
buffer += h_namelen;
@@ -1022,14 +1022,14 @@ gaih_getanswer_slice (const querybuf *answer, int anslen, const char *qname,
n = __libc_dn_expand (answer->buf, end_of_message, cp,
tbuf, sizeof tbuf);
- if (__glibc_unlikely (n < 0 || __libc_res_hnok (tbuf) == 0))
+ if (__glibc_unlikely (n < 0))
{
++had_error;
continue;
}
cp += n;
- if (*firstp)
+ if (*firstp && __libc_res_hnok (tbuf))
{
/* Reclaim buffer space. */
if (h_name + h_namelen == buffer)

449
SOURCES/glibc-upstream-2.34-327.patch
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@ -0,0 +1,449 @@
commit 480c820493add16e8dda6f3189d834223e1f4f39
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 10:02:49 2022 +0200
resolv: Add new tst-resolv-invalid-cname
This test checks resolution through CNAME chains that do not contain
host names (bug 12154).
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 9caf782276ecea4bc86fc94fbb52779736f3106d)
Conflicts:
resolv/Makefile
(usual test differences)
diff --git a/resolv/Makefile b/resolv/Makefile
index fded244d61068060..ea1518ec2da860c1 100644
--- a/resolv/Makefile
+++ b/resolv/Makefile
@@ -99,6 +99,7 @@ tests += \
tst-resolv-binary \
tst-resolv-byaddr \
tst-resolv-edns \
+ tst-resolv-invalid-cname \
tst-resolv-network \
tst-resolv-noaaaa \
tst-resolv-nondecimal \
@@ -279,6 +280,8 @@ $(objpfx)tst-resolv-res_init-multi: $(objpfx)libresolv.so \
$(objpfx)tst-resolv-res_init-thread: $(objpfx)libresolv.so \
$(shared-thread-library)
$(objpfx)tst-resolv-noaaaa: $(objpfx)libresolv.so $(shared-thread-library)
+$(objpfx)tst-resolv-invalid-cname: $(objpfx)libresolv.so \
+ $(shared-thread-library)
$(objpfx)tst-resolv-nondecimal: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-qtypes: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-rotate: $(objpfx)libresolv.so $(shared-thread-library)
diff --git a/resolv/tst-resolv-invalid-cname.c b/resolv/tst-resolv-invalid-cname.c
new file mode 100644
index 0000000000000000..ae2d4419b1978c02
--- /dev/null
+++ b/resolv/tst-resolv-invalid-cname.c
@@ -0,0 +1,406 @@
+/* Test handling of CNAMEs with non-host domain names (bug 12154).
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <netdb.h>
+#include <resolv.h>
+#include <stdlib.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/check_nss.h>
+#include <support/resolv_test.h>
+#include <support/support.h>
+#include <support/xmemstream.h>
+
+/* Query strings describe the CNAME chain in the response. They have
+ the format "bitsBITS.countCOUNT.example.", where BITS and COUNT are
+ replaced by unsigned decimal numbers. COUNT is the number of CNAME
+ records in the response. BITS has two bits for each CNAME record,
+ describing a special prefix that is added to that CNAME.
+
+ 0: No special leading label.
+ 1: Starting with "*.".
+ 2: Starting with "-x.".
+ 3: Starting with "star.*.".
+
+ The first CNAME in the response using the two least significant
+ bits.
+
+ For PTR queries, the QNAME format is different, it is either
+ COUNT.BITS.168.192.in-addr.arpa. (with BITS and COUNT still
+ decimal), or:
+
+COUNT.BITS0.BITS1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa.
+
+ where BITS and COUNT are hexadecimal. */
+
+static void
+response (const struct resolv_response_context *ctx,
+ struct resolv_response_builder *b,
+ const char *qname, uint16_t qclass, uint16_t qtype)
+{
+ TEST_COMPARE (qclass, C_IN);
+
+ /* The only other query type besides A is PTR. */
+ if (qtype != T_A && qtype != T_AAAA)
+ TEST_COMPARE (qtype, T_PTR);
+
+ unsigned int bits, bits1, count;
+ char *tail = NULL;
+ if (sscanf (qname, "bits%u.count%u.%ms", &bits, &count, &tail) == 3)
+ TEST_COMPARE_STRING (tail, "example");
+ else if (strstr (qname, "in-addr.arpa") != NULL
+ && sscanf (qname, "%u.%u.%ms", &bits, &count, &tail) == 3)
+ TEST_COMPARE_STRING (tail, "168.192.in-addr.arpa");
+ else if (sscanf (qname, "%x.%x.%x.%ms", &bits, &bits1, &count, &tail) == 4)
+ {
+ TEST_COMPARE_STRING (tail, "\
+0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa");
+ bits |= bits1 << 4;
+ }
+ else
+ FAIL_EXIT1 ("invalid QNAME: %s\n", qname);
+ free (tail);
+
+ struct resolv_response_flags flags = {};
+ resolv_response_init (b, flags);
+ resolv_response_add_question (b, qname, qclass, qtype);
+ resolv_response_section (b, ns_s_an);
+
+ /* Provide the requested number of CNAME records. */
+ char *previous_name = (char *) qname;
+ unsigned int original_bits = bits;
+ for (int unique = 0; unique < count; ++unique)
+ {
+ resolv_response_open_record (b, previous_name, qclass, T_CNAME, 60);
+
+ static const char bits_to_prefix[4][8] = { "", "*.", "-x.", "star.*." };
+ char *new_name = xasprintf ("%sunique%d.example",
+ bits_to_prefix[bits & 3], unique);
+ bits >>= 2;
+ resolv_response_add_name (b, new_name);
+ resolv_response_close_record (b);
+
+ if (previous_name != qname)
+ free (previous_name);
+ previous_name = new_name;
+ }
+
+ /* Actual answer record. */
+ resolv_response_open_record (b, previous_name, qclass, qtype, 60);
+ switch (qtype)
+ {
+ case T_A:
+ {
+ char ipv4[4] = {192, 168, count, original_bits};
+ resolv_response_add_data (b, &ipv4, sizeof (ipv4));
+ }
+ break;
+ case T_AAAA:
+ {
+ char ipv6[16] =
+ {
+ 0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ count, original_bits
+ };
+ resolv_response_add_data (b, &ipv6, sizeof (ipv6));
+ }
+ break;
+
+ case T_PTR:
+ {
+ char *name = xasprintf ("bits%u.count%u.example",
+ original_bits, count);
+ resolv_response_add_name (b, name);
+ free (name);
+ }
+ break;
+ }
+ resolv_response_close_record (b);
+
+ if (previous_name != qname)
+ free (previous_name);
+}
+
+/* Controls which name resolution function is invoked. */
+enum test_mode
+ {
+ byname, /* gethostbyname. */
+ byname2, /* gethostbyname2. */
+ gai, /* getaddrinfo without AI_CANONNAME. */
+ gai_canon, /* getaddrinfo with AI_CANONNAME. */
+
+ test_mode_num /* Number of enum values. */
+ };
+
+static const char *
+test_mode_to_string (enum test_mode mode)
+{
+ switch (mode)
+ {
+ case byname:
+ return "byname";
+ case byname2:
+ return "byname2";
+ case gai:
+ return "gai";
+ case gai_canon:
+ return "gai_canon";
+ case test_mode_num:
+ /* Report error below. */
+ }
+ FAIL_EXIT1 ("invalid test_mode: %d", mode);
+}
+
+/* Append the name and aliases to OUT. */
+static void
+append_names (FILE *out, const char *qname, int bits, int count,
+ enum test_mode mode)
+{
+ /* Largest valid index which has a corresponding zero in bits
+ (meaning a syntactically valid CNAME). */
+ int last_valid_cname = -1;
+
+ for (int i = 0; i < count; ++i)
+ if ((bits & (3 << (i * 2))) == 0)
+ last_valid_cname = i;
+
+ if (mode != gai)
+ {
+ const char *label;
+ if (mode == gai_canon)
+ label = "canonname";
+ else
+ label = "name";
+ if (last_valid_cname >= 0)
+ fprintf (out, "%s: unique%d.example\n", label, last_valid_cname);
+ else
+ fprintf (out, "%s: %s\n", label, qname);
+ }
+
+ if (mode == byname || mode == byname2)
+ {
+ if (last_valid_cname >= 0)
+ fprintf (out, "alias: %s\n", qname);
+ for (int i = 0; i < count; ++i)
+ {
+ if ((bits & (3 << (i * 2))) == 0 && i != last_valid_cname)
+ fprintf (out, "alias: unique%d.example\n", i);
+ }
+ }
+}
+
+/* Append the address information to OUT. */
+static void
+append_addresses (FILE *out, int af, int bits, int count, enum test_mode mode)
+{
+ int last = count * 256 + bits;
+ if (mode == gai || mode == gai_canon)
+ {
+ if (af == AF_INET || af == AF_UNSPEC)
+ fprintf (out, "address: STREAM/TCP 192.168.%d.%d 80\n", count, bits);
+ if (af == AF_INET6 || af == AF_UNSPEC)
+ {
+ if (last == 0)
+ fprintf (out, "address: STREAM/TCP 2001:db8:: 80\n");
+ else
+ fprintf (out, "address: STREAM/TCP 2001:db8::%x 80\n", last);
+ }
+ }
+ else
+ {
+ TEST_VERIFY (af != AF_UNSPEC);
+ if (af == AF_INET)
+ fprintf (out, "address: 192.168.%d.%d\n", count, bits);
+ if (af == AF_INET6)
+ {
+ if (last == 0)
+ fprintf (out, "address: 2001:db8::\n");
+ else
+ fprintf (out, "address: 2001:db8::%x\n", last);
+ }
+ }
+}
+
+/* Perform one test using a forward lookup. */
+static void
+check_forward (int af, int bits, int count, enum test_mode mode)
+{
+ char *qname = xasprintf ("bits%d.count%d.example", bits, count);
+ char *label = xasprintf ("af=%d bits=%d count=%d mode=%s qname=%s",
+ af, bits, count, test_mode_to_string (mode), qname);
+
+ struct xmemstream expected;
+ xopen_memstream (&expected);
+ if (mode == gai_canon)
+ fprintf (expected.out, "flags: AI_CANONNAME\n");
+ append_names (expected.out, qname, bits, count, mode);
+ append_addresses (expected.out, af, bits, count, mode);
+ xfclose_memstream (&expected);
+
+ if (mode == gai || mode == gai_canon)
+ {
+ struct addrinfo *ai;
+ struct addrinfo hints =
+ {
+ .ai_family = af,
+ .ai_socktype = SOCK_STREAM,
+ };
+ if (mode == gai_canon)
+ hints.ai_flags |= AI_CANONNAME;
+ int ret = getaddrinfo (qname, "80", &hints, &ai);
+ check_addrinfo (label, ai, ret, expected.buffer);
+ if (ret == 0)
+ freeaddrinfo (ai);
+ }
+ else
+ {
+ struct hostent *e;
+ if (mode == gai)
+ {
+ TEST_COMPARE (af, AF_INET);
+ e = gethostbyname (qname);
+ }
+ else
+ {
+ if (af != AF_INET)
+ TEST_COMPARE (af, AF_INET6);
+ e = gethostbyname2 (qname, af);
+ }
+ check_hostent (label, e, expected.buffer);
+ }
+
+ free (expected.buffer);
+ free (label);
+ free (qname);
+}
+
+/* Perform one check using a reverse lookup. */
+
+static void
+check_reverse (int af, int bits, int count)
+{
+ TEST_VERIFY (af == AF_INET || af == AF_INET6);
+
+ char *label = xasprintf ("af=%d bits=%d count=%d", af, bits, count);
+ char *fqdn = xasprintf ("bits%d.count%d.example", bits, count);
+
+ struct xmemstream expected;
+ xopen_memstream (&expected);
+ fprintf (expected.out, "name: %s\n", fqdn);
+ append_addresses (expected.out, af, bits, count, byname);
+ xfclose_memstream (&expected);
+
+ char addr[16] = { 0 };
+ socklen_t addrlen;
+ if (af == AF_INET)
+ {
+ addr[0] = 192;
+ addr[1] = 168;
+ addr[2] = count;
+ addr[3] = bits;
+ addrlen = 4;
+ }
+ else
+ {
+ addr[0] = 0x20;
+ addr[1] = 0x01;
+ addr[2] = 0x0d;
+ addr[3] = 0xb8;
+ addr[14] = count;
+ addr[15] = bits;
+ addrlen = 16;
+ }
+
+ struct hostent *e = gethostbyaddr (addr, addrlen, af);
+ check_hostent (label, e, expected.buffer);
+
+ /* getnameinfo check is different. There is no generic check_*
+ function for it. */
+ {
+ struct sockaddr_in sin = { };
+ struct sockaddr_in6 sin6 = { };
+ void *sa;
+ socklen_t salen;
+ if (af == AF_INET)
+ {
+ sin.sin_family = AF_INET;
+ memcpy (&sin.sin_addr, addr, addrlen);
+ sin.sin_port = htons (80);
+ sa = &sin;
+ salen = sizeof (sin);
+ }
+ else
+ {
+ sin6.sin6_family = AF_INET6;
+ memcpy (&sin6.sin6_addr, addr, addrlen);
+ sin6.sin6_port = htons (80);
+ sa = &sin6;
+ salen = sizeof (sin6);
+ }
+
+ char host[64];
+ char service[64];
+ int ret = getnameinfo (sa, salen, host,
+ sizeof (host), service, sizeof (service),
+ NI_NAMEREQD | NI_NUMERICSERV);
+ TEST_COMPARE (ret, 0);
+ TEST_COMPARE_STRING (host, fqdn);
+ TEST_COMPARE_STRING (service, "80");
+ }
+
+ free (expected.buffer);
+ free (fqdn);
+ free (label);
+}
+
+static int
+do_test (void)
+{
+ struct resolv_test *obj = resolv_test_start
+ ((struct resolv_redirect_config)
+ {
+ .response_callback = response
+ });
+
+ for (int count = 0; count <= 3; ++count)
+ for (int bits = 0; bits <= 1 << (count * 2); ++bits)
+ {
+ if (count > 0 && bits == count)
+ /* The last bits value is only checked if count == 0. */
+ continue;
+
+ for (enum test_mode mode = 0; mode < test_mode_num; ++mode)
+ {
+ check_forward (AF_INET, bits, count, mode);
+ if (mode != byname)
+ check_forward (AF_INET6, bits, count, mode);
+ if (mode == gai || mode == gai_canon)
+ check_forward (AF_UNSPEC, bits, count, mode);
+ }
+
+ check_reverse (AF_INET, bits, count);
+ check_reverse (AF_INET6, bits, count);
+ }
+
+ resolv_test_end (obj);
+
+ return 0;
+}
+
+#include <support/test-driver.c>

31
SOURCES/glibc-upstream-2.34-329.patch
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commit 044755e2faeeca13bb77b2e9e638a45e6e90a5fa
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 30 13:30:03 2022 +0200
resolv: Fix building tst-resolv-invalid-cname for earlier C standards
This fixes this compiler error:
tst-resolv-invalid-cname.c: In function ‘test_mode_to_string’:
tst-resolv-invalid-cname.c:164:10: error: label at end of compound statement
case test_mode_num:
^~~~~~~~~~~~~
Fixes commit 9caf782276ecea4bc86fc94fbb52779736f3106d
("resolv: Add new tst-resolv-invalid-cname").
(cherry picked from commit d09aa4a17229bcaa2ec7642006b12612498582e7)
diff --git a/resolv/tst-resolv-invalid-cname.c b/resolv/tst-resolv-invalid-cname.c
index ae2d4419b1978c02..63dac90e02d6cbc7 100644
--- a/resolv/tst-resolv-invalid-cname.c
+++ b/resolv/tst-resolv-invalid-cname.c
@@ -162,7 +162,7 @@ test_mode_to_string (enum test_mode mode)
case gai_canon:
return "gai_canon";
case test_mode_num:
- /* Report error below. */
+ break; /* Report error below. */
}
FAIL_EXIT1 ("invalid test_mode: %d", mode);
}

33
SOURCES/glibc-upstream-2.34-330.patch
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commit a2e259014f8a0e5f3ff938314f3087b74255804d
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Nov 11 06:31:51 2021 -0800
Avoid extra load with CAS in __pthread_mutex_lock_full [BZ #28537]
Replace boolean CAS with value CAS to avoid the extra load.
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
(cherry picked from commit 0b82747dc48d5bf0871bdc6da8cb6eec1256355f)
diff --git a/nptl/pthread_mutex_lock.c b/nptl/pthread_mutex_lock.c
index da624f322d06d0ee..a04e0158451c8fff 100644
--- a/nptl/pthread_mutex_lock.c
+++ b/nptl/pthread_mutex_lock.c
@@ -298,12 +298,12 @@ __pthread_mutex_lock_full (pthread_mutex_t *mutex)
meantime. */
if ((oldval & FUTEX_WAITERS) == 0)
{
- if (atomic_compare_and_exchange_bool_acq (&mutex->__data.__lock,
- oldval | FUTEX_WAITERS,
- oldval)
- != 0)
+ int val;
+ if ((val = atomic_compare_and_exchange_val_acq
+ (&mutex->__data.__lock, oldval | FUTEX_WAITERS,
+ oldval)) != oldval)
{
- oldval = mutex->__data.__lock;
+ oldval = val;
continue;
}
oldval |= FUTEX_WAITERS;

33
SOURCES/glibc-upstream-2.34-331.patch
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commit ed8300c054cae4aeb0bbfa043f5fccc91a4adbf5
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Nov 11 06:54:01 2021 -0800
Avoid extra load with CAS in __pthread_mutex_clocklock_common [BZ #28537]
Replace boolean CAS with value CAS to avoid the extra load.
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
(cherry picked from commit 49302b8fdf9103b6fc0a398678668a22fa19574c)
diff --git a/nptl/pthread_mutex_timedlock.c b/nptl/pthread_mutex_timedlock.c
index 11ad7005d07afc6e..90cede9446e33fcf 100644
--- a/nptl/pthread_mutex_timedlock.c
+++ b/nptl/pthread_mutex_timedlock.c
@@ -234,12 +234,12 @@ __pthread_mutex_clocklock_common (pthread_mutex_t *mutex,
meantime. */
if ((oldval & FUTEX_WAITERS) == 0)
{
- if (atomic_compare_and_exchange_bool_acq (&mutex->__data.__lock,
- oldval | FUTEX_WAITERS,
- oldval)
- != 0)
+ int val;
+ if ((val = atomic_compare_and_exchange_val_acq
+ (&mutex->__data.__lock, oldval | FUTEX_WAITERS,
+ oldval)) != oldval)
{
- oldval = mutex->__data.__lock;
+ oldval = val;
continue;
}
oldval |= FUTEX_WAITERS;

46
SOURCES/glibc-upstream-2.34-332.patch
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commit a6b81f605dfba8650ea1f80122f41eb8e6c73dc7
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Nov 2 18:33:07 2021 -0700
Add LLL_MUTEX_READ_LOCK [BZ #28537]
CAS instruction is expensive. From the x86 CPU's point of view, getting
a cache line for writing is more expensive than reading. See Appendix
A.2 Spinlock in:
https://www.intel.com/content/dam/www/public/us/en/documents/white-papers/xeon-lock-scaling-analysis-paper.pdf
The full compare and swap will grab the cache line exclusive and cause
excessive cache line bouncing.
Add LLL_MUTEX_READ_LOCK to do an atomic load and skip CAS in spinlock
loop if compare may fail to reduce cache line bouncing on contended locks.
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
(cherry picked from commit d672a98a1af106bd68deb15576710cd61363f7a6)
diff --git a/nptl/pthread_mutex_lock.c b/nptl/pthread_mutex_lock.c
index a04e0158451c8fff..9f40928cc6b9a067 100644
--- a/nptl/pthread_mutex_lock.c
+++ b/nptl/pthread_mutex_lock.c
@@ -65,6 +65,11 @@ lll_mutex_lock_optimized (pthread_mutex_t *mutex)
# define PTHREAD_MUTEX_VERSIONS 1
#endif
+#ifndef LLL_MUTEX_READ_LOCK
+# define LLL_MUTEX_READ_LOCK(mutex) \
+ atomic_load_relaxed (&(mutex)->__data.__lock)
+#endif
+
static int __pthread_mutex_lock_full (pthread_mutex_t *mutex)
__attribute_noinline__;
@@ -142,6 +147,8 @@ PTHREAD_MUTEX_LOCK (pthread_mutex_t *mutex)
break;
}
atomic_spin_nop ();
+ if (LLL_MUTEX_READ_LOCK (mutex) != 0)
+ continue;
}
while (LLL_MUTEX_TRYLOCK (mutex) != 0);

66
SOURCES/glibc-upstream-2.34-333.patch
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commit 6bcfbee7277e4faa4b693bd965931f0d1883005d
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Fri Nov 12 11:47:42 2021 -0800
Move assignment out of the CAS condition
Update
commit 49302b8fdf9103b6fc0a398678668a22fa19574c
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Nov 11 06:54:01 2021 -0800
Avoid extra load with CAS in __pthread_mutex_clocklock_common [BZ #28537]
Replace boolean CAS with value CAS to avoid the extra load.
and
commit 0b82747dc48d5bf0871bdc6da8cb6eec1256355f
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Nov 11 06:31:51 2021 -0800
Avoid extra load with CAS in __pthread_mutex_lock_full [BZ #28537]
Replace boolean CAS with value CAS to avoid the extra load.
by moving assignment out of the CAS condition.
(cherry picked from commit 120ac6d238825452e8024e2f627da33b2508dfd3)
diff --git a/nptl/pthread_mutex_lock.c b/nptl/pthread_mutex_lock.c
index 9f40928cc6b9a067..49901ffa0a96d659 100644
--- a/nptl/pthread_mutex_lock.c
+++ b/nptl/pthread_mutex_lock.c
@@ -305,10 +305,9 @@ __pthread_mutex_lock_full (pthread_mutex_t *mutex)
meantime. */
if ((oldval & FUTEX_WAITERS) == 0)
{
- int val;
- if ((val = atomic_compare_and_exchange_val_acq
- (&mutex->__data.__lock, oldval | FUTEX_WAITERS,
- oldval)) != oldval)
+ int val = atomic_compare_and_exchange_val_acq
+ (&mutex->__data.__lock, oldval | FUTEX_WAITERS, oldval);
+ if (val != oldval)
{
oldval = val;
continue;
diff --git a/nptl/pthread_mutex_timedlock.c b/nptl/pthread_mutex_timedlock.c
index 90cede9446e33fcf..2e5506db06ccb1ec 100644
--- a/nptl/pthread_mutex_timedlock.c
+++ b/nptl/pthread_mutex_timedlock.c
@@ -234,10 +234,9 @@ __pthread_mutex_clocklock_common (pthread_mutex_t *mutex,
meantime. */
if ((oldval & FUTEX_WAITERS) == 0)
{
- int val;
- if ((val = atomic_compare_and_exchange_val_acq
- (&mutex->__data.__lock, oldval | FUTEX_WAITERS,
- oldval)) != oldval)
+ int val = atomic_compare_and_exchange_val_acq
+ (&mutex->__data.__lock, oldval | FUTEX_WAITERS, oldval);
+ if (val != oldval)
{
oldval = val;
continue;

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SOURCES/glibc-upstream-2.34-334.patch
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commit 43760d33d78f9ea8c8af942b570112ee801b99df
Author: Jangwoong Kim <6812skiii@gmail.com>
Date: Tue Dec 14 21:30:51 2021 +0900
nptl: Effectively skip CAS in spinlock loop
The commit:
"Add LLL_MUTEX_READ_LOCK [BZ #28537]"
SHA1: d672a98a1af106bd68deb15576710cd61363f7a6
introduced LLL_MUTEX_READ_LOCK, to skip CAS in spinlock loop
if atomic load fails. But, "continue" inside of do-while loop
does not skip the evaluation of escape expression, thus CAS
is not skipped.
Replace do-while with while and skip LLL_MUTEX_TRYLOCK if
LLL_MUTEX_READ_LOCK fails.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
(cherry picked from commit 6b8dbbd03ac88f169b65b5c7d7278576a11d2e44)
diff --git a/nptl/pthread_mutex_lock.c b/nptl/pthread_mutex_lock.c
index 49901ffa0a96d659..bbe754a272b97d91 100644
--- a/nptl/pthread_mutex_lock.c
+++ b/nptl/pthread_mutex_lock.c
@@ -147,10 +147,9 @@ PTHREAD_MUTEX_LOCK (pthread_mutex_t *mutex)
break;
}
atomic_spin_nop ();
- if (LLL_MUTEX_READ_LOCK (mutex) != 0)
- continue;
}
- while (LLL_MUTEX_TRYLOCK (mutex) != 0);
+ while (LLL_MUTEX_READ_LOCK (mutex) != 0
+ || LLL_MUTEX_TRYLOCK (mutex) != 0);
mutex->__data.__spins += (cnt - mutex->__data.__spins) / 8;
}

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commit 04efdcfac405723c23b25d124817bcfc1697e2d8
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date: Wed Apr 27 15:13:02 2022 -0500
sysdeps: Add 'get_fast_jitter' interace in fast-jitter.h
'get_fast_jitter' is meant to be used purely for performance
purposes. In all cases it's used it should be acceptable to get no
randomness (see default case). An example use case is in setting
jitter for retries between threads at a lock. There is a
performance benefit to having jitter, but only if the jitter can
be generated very quickly and ultimately there is no serious issue
if no jitter is generated.
The implementation generally uses 'HP_TIMING_NOW' iff it is
inlined (avoid any potential syscall paths).
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
(cherry picked from commit 911c63a51c690dd1a97dfc587097277029baf00f)
diff --git a/sysdeps/generic/fast-jitter.h b/sysdeps/generic/fast-jitter.h
new file mode 100644
index 0000000000000000..4dd53e3475c3dfe6
--- /dev/null
+++ b/sysdeps/generic/fast-jitter.h
@@ -0,0 +1,42 @@
+/* Fallback for fast jitter just return 0.
+ Copyright (C) 2019-2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _FAST_JITTER_H
+# define _FAST_JITTER_H
+
+# include <stdint.h>
+# include <hp-timing.h>
+
+/* Baseline just return 0. We could create jitter using a clock or
+ 'random_bits' but that may imply a syscall and the goal of
+ 'get_fast_jitter' is minimal overhead "randomness" when such
+ randomness helps performance. Adding high overhead the function
+ defeats the purpose. */
+static inline uint32_t
+get_fast_jitter (void)
+{
+# if HP_TIMING_INLINE
+ hp_timing_t jitter;
+ HP_TIMING_NOW (jitter);
+ return (uint32_t) jitter;
+# else
+ return 0;
+# endif
+}
+
+#endif

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commit ea69248445fb9b80da02ee0c7261cba4b1a5532e
Author: Wangyang Guo <wangyang.guo@intel.com>
Date: Fri May 6 01:50:10 2022 +0000
nptl: Add backoff mechanism to spinlock loop
When mutiple threads waiting for lock at the same time, once lock owner
releases the lock, waiters will see lock available and all try to lock,
which may cause an expensive CAS storm.
Binary exponential backoff with random jitter is introduced. As try-lock
attempt increases, there is more likely that a larger number threads
compete for adaptive mutex lock, so increase wait time in exponential.
A random jitter is also added to avoid synchronous try-lock from other
threads.
v2: Remove read-check before try-lock for performance.
v3:
1. Restore read-check since it works well in some platform.
2. Make backoff arch dependent, and enable it for x86_64.
3. Limit max backoff to reduce latency in large critical section.
v4: Fix strict-prototypes error in sysdeps/nptl/pthread_mutex_backoff.h
v5: Commit log updated for regression in large critical section.
Result of pthread-mutex-locks bench
Test Platform: Xeon 8280L (2 socket, 112 CPUs in total)
First Row: thread number
First Col: critical section length
Values: backoff vs upstream, time based, low is better
non-critical-length: 1
1 2 4 8 16 32 64 112 140
0 0.99 0.58 0.52 0.49 0.43 0.44 0.46 0.52 0.54
1 0.98 0.43 0.56 0.50 0.44 0.45 0.50 0.56 0.57
2 0.99 0.41 0.57 0.51 0.45 0.47 0.48 0.60 0.61
4 0.99 0.45 0.59 0.53 0.48 0.49 0.52 0.64 0.65
8 1.00 0.66 0.71 0.63 0.56 0.59 0.66 0.72 0.71
16 0.97 0.78 0.91 0.73 0.67 0.70 0.79 0.80 0.80
32 0.95 1.17 0.98 0.87 0.82 0.86 0.89 0.90 0.90
64 0.96 0.95 1.01 1.01 0.98 1.00 1.03 0.99 0.99
128 0.99 1.01 1.01 1.17 1.08 1.12 1.02 0.97 1.02
non-critical-length: 32
1 2 4 8 16 32 64 112 140
0 1.03 0.97 0.75 0.65 0.58 0.58 0.56 0.70 0.70
1 0.94 0.95 0.76 0.65 0.58 0.58 0.61 0.71 0.72
2 0.97 0.96 0.77 0.66 0.58 0.59 0.62 0.74 0.74
4 0.99 0.96 0.78 0.66 0.60 0.61 0.66 0.76 0.77
8 0.99 0.99 0.84 0.70 0.64 0.66 0.71 0.80 0.80
16 0.98 0.97 0.95 0.76 0.70 0.73 0.81 0.85 0.84
32 1.04 1.12 1.04 0.89 0.82 0.86 0.93 0.91 0.91
64 0.99 1.15 1.07 1.00 0.99 1.01 1.05 0.99 0.99
128 1.00 1.21 1.20 1.22 1.25 1.31 1.12 1.10 0.99
non-critical-length: 128
1 2 4 8 16 32 64 112 140
0 1.02 1.00 0.99 0.67 0.61 0.61 0.61 0.74 0.73
1 0.95 0.99 1.00 0.68 0.61 0.60 0.60 0.74 0.74
2 1.00 1.04 1.00 0.68 0.59 0.61 0.65 0.76 0.76
4 1.00 0.96 0.98 0.70 0.63 0.63 0.67 0.78 0.77
8 1.01 1.02 0.89 0.73 0.65 0.67 0.71 0.81 0.80
16 0.99 0.96 0.96 0.79 0.71 0.73 0.80 0.84 0.84
32 0.99 0.95 1.05 0.89 0.84 0.85 0.94 0.92 0.91
64 1.00 0.99 1.16 1.04 1.00 1.02 1.06 0.99 0.99
128 1.00 1.06 0.98 1.14 1.39 1.26 1.08 1.02 0.98
There is regression in large critical section. But adaptive mutex is
aimed for "quick" locks. Small critical section is more common when
users choose to use adaptive pthread_mutex.
Signed-off-by: Wangyang Guo <wangyang.guo@intel.com>
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
(cherry picked from commit 8162147872491bb5b48e91543b19c49a29ae6b6d)
diff --git a/nptl/pthread_mutex_lock.c b/nptl/pthread_mutex_lock.c
index bbe754a272b97d91..8f3f687f2a151d16 100644
--- a/nptl/pthread_mutex_lock.c
+++ b/nptl/pthread_mutex_lock.c
@@ -139,14 +139,26 @@ PTHREAD_MUTEX_LOCK (pthread_mutex_t *mutex)
int cnt = 0;
int max_cnt = MIN (max_adaptive_count (),
mutex->__data.__spins * 2 + 10);
+ int spin_count, exp_backoff = 1;
+ unsigned int jitter = get_jitter ();
do
{
- if (cnt++ >= max_cnt)
+ /* In each loop, spin count is exponential backoff plus
+ random jitter, random range is [0, exp_backoff-1]. */
+ spin_count = exp_backoff + (jitter & (exp_backoff - 1));
+ cnt += spin_count;
+ if (cnt >= max_cnt)
{
+ /* If cnt exceeds max spin count, just go to wait
+ queue. */
LLL_MUTEX_LOCK (mutex);
break;
}
- atomic_spin_nop ();
+ do
+ atomic_spin_nop ();
+ while (--spin_count > 0);
+ /* Prepare for next loop. */
+ exp_backoff = get_next_backoff (exp_backoff);
}
while (LLL_MUTEX_READ_LOCK (mutex) != 0
|| LLL_MUTEX_TRYLOCK (mutex) != 0);
diff --git a/sysdeps/nptl/pthreadP.h b/sysdeps/nptl/pthreadP.h
index b968afc4c6b61b92..ed186ce3df1fde0c 100644
--- a/sysdeps/nptl/pthreadP.h
+++ b/sysdeps/nptl/pthreadP.h
@@ -34,6 +34,7 @@
#include <kernel-features.h>
#include <errno.h>
#include <internal-signals.h>
+#include <pthread_mutex_backoff.h>
#include "pthread_mutex_conf.h"
diff --git a/sysdeps/nptl/pthread_mutex_backoff.h b/sysdeps/nptl/pthread_mutex_backoff.h
new file mode 100644
index 0000000000000000..5b26c22ac789f54f
--- /dev/null
+++ b/sysdeps/nptl/pthread_mutex_backoff.h
@@ -0,0 +1,35 @@
+/* Pthread mutex backoff configuration.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+#ifndef _PTHREAD_MUTEX_BACKOFF_H
+#define _PTHREAD_MUTEX_BACKOFF_H 1
+
+static inline unsigned int
+get_jitter (void)
+{
+ /* Arch dependent random jitter, return 0 disables random. */
+ return 0;
+}
+
+static inline int
+get_next_backoff (int backoff)
+{
+ /* Next backoff, return 1 disables mutex backoff. */
+ return 1;
+}
+
+#endif
diff --git a/sysdeps/x86_64/nptl/pthread_mutex_backoff.h b/sysdeps/x86_64/nptl/pthread_mutex_backoff.h
new file mode 100644
index 0000000000000000..ec74c3d9db61864e
--- /dev/null
+++ b/sysdeps/x86_64/nptl/pthread_mutex_backoff.h
@@ -0,0 +1,39 @@
+/* Pthread mutex backoff configuration.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+#ifndef _PTHREAD_MUTEX_BACKOFF_H
+#define _PTHREAD_MUTEX_BACKOFF_H 1
+
+#include <fast-jitter.h>
+
+static inline unsigned int
+get_jitter (void)
+{
+ return get_fast_jitter ();
+}
+
+#define MAX_BACKOFF 16
+
+static inline int
+get_next_backoff (int backoff)
+{
+ /* Binary expontial backoff. Limiting max backoff
+ can reduce latency in large critical section. */
+ return (backoff < MAX_BACKOFF) ? backoff << 1 : backoff;
+}
+
+#endif

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commit 95f5089d4a57cd1e738be908c7a628cb7d0ce512
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Mon Oct 3 23:16:46 2022 +0200
x86: include BMI1 and BMI2 in x86-64-v3 level
The "System V Application Binary Interface AMD64 Architecture Processor
Supplement" mandates the BMI1 and BMI2 CPU features for the x86-64-v3
level.
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
(cherry picked from commit b80f16adbd979831bf25ea491e1261e81885c2b6)
diff --git a/sysdeps/x86/get-isa-level.h b/sysdeps/x86/get-isa-level.h
index aa80f56ca635e54b..785c25a835edf004 100644
--- a/sysdeps/x86/get-isa-level.h
+++ b/sysdeps/x86/get-isa-level.h
@@ -47,6 +47,8 @@ get_isa_level (const struct cpu_features *cpu_features)
isa_level |= GNU_PROPERTY_X86_ISA_1_V2;
if (CPU_FEATURE_USABLE_P (cpu_features, AVX)
&& CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI1)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI2)
&& CPU_FEATURE_USABLE_P (cpu_features, F16C)
&& CPU_FEATURE_USABLE_P (cpu_features, FMA)
&& CPU_FEATURE_USABLE_P (cpu_features, LZCNT)

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commit 414fc856ff4e011e62b88a21d30294637a152dc7
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Mon Oct 3 23:16:46 2022 +0200
x86-64: Require BMI2 for AVX2 str(n)casecmp implementations
The AVX2 str(n)casecmp implementations use the 'bzhi' instruction, which
belongs to the BMI2 CPU feature.
NB: It also uses the 'tzcnt' BMI1 instruction, but it is executed as BSF
as BSF if the CPU doesn't support TZCNT, and produces the same result
for non-zero input.
Partially fixes: b77b06e0e296 ("x86: Optimize strcmp-avx2.S")
Partially resolves: BZ #29611
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
(cherry picked from commit 10f79d3670b036925da63dc532b122d27ce65ff8)
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index 8d649e263eb24b8a..ca64b34c146a76f9 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -386,13 +386,16 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strcasecmp,
IFUNC_IMPL_ADD (array, i, strcasecmp,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI2)),
__strcasecmp_evex)
IFUNC_IMPL_ADD (array, i, strcasecmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__strcasecmp_avx2)
IFUNC_IMPL_ADD (array, i, strcasecmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strcasecmp_avx2_rtm)
IFUNC_IMPL_ADD (array, i, strcasecmp,
@@ -407,13 +410,16 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strcasecmp_l,
IFUNC_IMPL_ADD (array, i, strcasecmp,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI2)),
__strcasecmp_l_evex)
IFUNC_IMPL_ADD (array, i, strcasecmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__strcasecmp_l_avx2)
IFUNC_IMPL_ADD (array, i, strcasecmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strcasecmp_l_avx2_rtm)
IFUNC_IMPL_ADD (array, i, strcasecmp_l,
@@ -542,13 +548,16 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strncasecmp,
IFUNC_IMPL_ADD (array, i, strncasecmp,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI2)),
__strncasecmp_evex)
IFUNC_IMPL_ADD (array, i, strncasecmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__strncasecmp_avx2)
IFUNC_IMPL_ADD (array, i, strncasecmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strncasecmp_avx2_rtm)
IFUNC_IMPL_ADD (array, i, strncasecmp,
@@ -564,13 +573,16 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strncasecmp_l,
IFUNC_IMPL_ADD (array, i, strncasecmp,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ & CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI2)),
__strncasecmp_l_evex)
IFUNC_IMPL_ADD (array, i, strncasecmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__strncasecmp_l_avx2)
IFUNC_IMPL_ADD (array, i, strncasecmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strncasecmp_l_avx2_rtm)
IFUNC_IMPL_ADD (array, i, strncasecmp_l,
diff --git a/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h b/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h
index 40819caf5ab10337..e61d6e9497bce9d9 100644
--- a/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h
+++ b/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h
@@ -32,6 +32,7 @@ IFUNC_SELECTOR (void)
const struct cpu_features* cpu_features = __get_cpu_features ();
if (CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI2)
&& CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load))
{
if (CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)

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commit e1561d8cf005a23bcaf514802854b493829a25b1
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Mon Oct 3 23:16:46 2022 +0200
x86-64: Require BMI2 for AVX2 strcmp implementation
The AVX2 strcmp implementation uses the 'bzhi' instruction, which
belongs to the BMI2 CPU feature.
NB: It also uses the 'tzcnt' BMI1 instruction, but it is executed as BSF
as BSF if the CPU doesn't support TZCNT, and produces the same result
for non-zero input.
Partially fixes: b77b06e0e296 ("x86: Optimize strcmp-avx2.S")
Partially resolves: BZ #29611
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
(cherry picked from commit 4d64c6445735e9b34e2ac8e369312cbfc2f88e17)
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index ca64b34c146a76f9..70931f15985334af 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -503,10 +503,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/strcmp.c. */
IFUNC_IMPL (i, name, strcmp,
IFUNC_IMPL_ADD (array, i, strcmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__strcmp_avx2)
IFUNC_IMPL_ADD (array, i, strcmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strcmp_avx2_rtm)
IFUNC_IMPL_ADD (array, i, strcmp,
diff --git a/sysdeps/x86_64/multiarch/strcmp.c b/sysdeps/x86_64/multiarch/strcmp.c
index b457fb4c150e4407..0c0cd20a03278a2b 100644
--- a/sysdeps/x86_64/multiarch/strcmp.c
+++ b/sysdeps/x86_64/multiarch/strcmp.c
@@ -40,11 +40,11 @@ IFUNC_SELECTOR (void)
const struct cpu_features* cpu_features = __get_cpu_features ();
if (CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI2)
&& CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load))
{
if (CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)
- && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)
- && CPU_FEATURE_USABLE_P (cpu_features, BMI2))
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW))
return OPTIMIZE (evex);
if (CPU_FEATURE_USABLE_P (cpu_features, RTM))

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commit b9cbb8dd48b545f3b36b5d411481dc0bd118ee94
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Mon Oct 3 23:16:46 2022 +0200
x86-64: Require BMI2 for AVX2 strncmp implementation
The AVX2 strncmp implementations uses the 'bzhi' instruction, which
belongs to the BMI2 CPU feature.
NB: It also uses the 'tzcnt' BMI1 instruction, but it is executed as BSF
as BSF if the CPU doesn't support TZCNT, and produces the same result
for non-zero input.
Partially fixes: b77b06e0e296 ("x86: Optimize strcmp-avx2.S")
Partially resolves: BZ #29611
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
(cherry picked from commit fc7de1d9b99ae1676bc626ddca422d7abee0eb48)
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index 70931f15985334af..34d5f6efe5421014 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -1022,15 +1022,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/strncmp.c. */
IFUNC_IMPL (i, name, strncmp,
IFUNC_IMPL_ADD (array, i, strncmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__strncmp_avx2)
IFUNC_IMPL_ADD (array, i, strncmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strncmp_avx2_rtm)
IFUNC_IMPL_ADD (array, i, strncmp,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI2)),
__strncmp_evex)
IFUNC_IMPL_ADD (array, i, strncmp, CPU_FEATURE_USABLE (SSE4_2),
__strncmp_sse42)
diff --git a/sysdeps/x86_64/multiarch/strncmp.c b/sysdeps/x86_64/multiarch/strncmp.c
index f94a421784bfe923..7632d7b2dd4447aa 100644
--- a/sysdeps/x86_64/multiarch/strncmp.c
+++ b/sysdeps/x86_64/multiarch/strncmp.c
@@ -39,11 +39,11 @@ IFUNC_SELECTOR (void)
const struct cpu_features* cpu_features = __get_cpu_features ();
if (CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI2)
&& CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load))
{
if (CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)
- && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)
- && CPU_FEATURE_USABLE_P (cpu_features, BMI2))
+ && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW))
return OPTIMIZE (evex);
if (CPU_FEATURE_USABLE_P (cpu_features, RTM))

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commit 67e863742d98c990b3d3b814b80042c0fa0d50a5
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Mon Oct 3 23:16:46 2022 +0200
x86-64: Require BMI2 for AVX2 wcs(n)cmp implementations
The AVX2 wcs(n)cmp implementations use the 'bzhi' instruction, which
belongs to the BMI2 CPU feature.
NB: It also uses the 'tzcnt' BMI1 instruction, but it is executed as BSF
as BSF if the CPU doesn't support TZCNT, and produces the same result
for non-zero input.
Partially fixes: b77b06e0e296 ("x86: Optimize strcmp-avx2.S")
Partially resolves: BZ #29611
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
(cherry picked from commit f31a5a884ed84bd37032729d4d1eb9d06c9f3c29)
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index 34d5f6efe5421014..e76a991dc671c1a9 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -693,10 +693,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/wcscmp.c. */
IFUNC_IMPL (i, name, wcscmp,
IFUNC_IMPL_ADD (array, i, wcscmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__wcscmp_avx2)
IFUNC_IMPL_ADD (array, i, wcscmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__wcscmp_avx2_rtm)
IFUNC_IMPL_ADD (array, i, wcscmp,
@@ -709,10 +711,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/wcsncmp.c. */
IFUNC_IMPL (i, name, wcsncmp,
IFUNC_IMPL_ADD (array, i, wcsncmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__wcsncmp_avx2)
IFUNC_IMPL_ADD (array, i, wcsncmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__wcsncmp_avx2_rtm)
IFUNC_IMPL_ADD (array, i, wcsncmp,

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commit 94b9c1b6409e34f3f0b2339f77d7ee78087422eb
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Mon Oct 3 23:16:46 2022 +0200
x86-64: Require BMI2 for AVX2 (raw|w)memchr implementations
The AVX2 memchr, rawmemchr and wmemchr implementations use the 'bzhi'
and 'sarx' instructions, which belongs to the BMI2 CPU feature.
Fixes: acfd088a1963 ("x86: Optimize memchr-avx2.S")
Partially resolves: BZ #29611
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
(cherry picked from commit e3e7fab7fe5186d18ca2046d99ba321c27db30ad)
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index e76a991dc671c1a9..81640cf00664e3ed 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -41,10 +41,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/memchr.c. */
IFUNC_IMPL (i, name, memchr,
IFUNC_IMPL_ADD (array, i, memchr,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__memchr_avx2)
IFUNC_IMPL_ADD (array, i, memchr,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__memchr_avx2_rtm)
IFUNC_IMPL_ADD (array, i, memchr,
@@ -283,10 +285,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/rawmemchr.c. */
IFUNC_IMPL (i, name, rawmemchr,
IFUNC_IMPL_ADD (array, i, rawmemchr,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__rawmemchr_avx2)
IFUNC_IMPL_ADD (array, i, rawmemchr,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__rawmemchr_avx2_rtm)
IFUNC_IMPL_ADD (array, i, rawmemchr,
@@ -787,10 +791,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/wmemchr.c. */
IFUNC_IMPL (i, name, wmemchr,
IFUNC_IMPL_ADD (array, i, wmemchr,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__wmemchr_avx2)
IFUNC_IMPL_ADD (array, i, wmemchr,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__wmemchr_avx2_rtm)
IFUNC_IMPL_ADD (array, i, wmemchr,

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commit 36d6b9be3d7008a78e1f6e2e2db1947b76b206d8
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Mon Oct 3 23:16:46 2022 +0200
x86-64: Require BMI2 and LZCNT for AVX2 memrchr implementation
The AVX2 memrchr implementation uses the 'shlxl' instruction, which
belongs to the BMI2 CPU feature and uses the 'lzcnt' instruction, which
belongs to the LZCNT CPU feature.
Fixes: af5306a735eb ("x86: Optimize memrchr-avx2.S")
Partially resolves: BZ #29611
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
(cherry picked from commit 3c0c78afabfed4b6fc161c159e628fbf14ff370b)
diff --git a/sysdeps/x86_64/multiarch/ifunc-avx2.h b/sysdeps/x86_64/multiarch/ifunc-avx2.h
index 6de72f72724b81ba..52bd00ea5cab6b22 100644
--- a/sysdeps/x86_64/multiarch/ifunc-avx2.h
+++ b/sysdeps/x86_64/multiarch/ifunc-avx2.h
@@ -31,6 +31,7 @@ IFUNC_SELECTOR (void)
if (CPU_FEATURE_USABLE_P (cpu_features, AVX2)
&& CPU_FEATURE_USABLE_P (cpu_features, BMI2)
+ && CPU_FEATURE_USABLE_P (cpu_features, LZCNT)
&& CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load))
{
if (CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index 81640cf00664e3ed..d1fc1e75d6706413 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -174,15 +174,21 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/memrchr.c. */
IFUNC_IMPL (i, name, memrchr,
IFUNC_IMPL_ADD (array, i, memrchr,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (LZCNT)),
__memrchr_avx2)
IFUNC_IMPL_ADD (array, i, memrchr,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (LZCNT)
&& CPU_FEATURE_USABLE (RTM)),
__memrchr_avx2_rtm)
IFUNC_IMPL_ADD (array, i, memrchr,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (LZCNT)),
__memrchr_evex)
IFUNC_IMPL_ADD (array, i, memrchr, 1, __memrchr_sse2))

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commit e570b865b53f33453d97160791a7d97e38bcc6e8
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Mon Oct 3 23:16:46 2022 +0200
x86-64: Require BMI1/BMI2 for AVX2 strrchr and wcsrchr implementations
The AVX2 strrchr and wcsrchr implementation uses the 'blsmsk'
instruction which belongs to the BMI1 CPU feature and the 'shrx'
instruction, which belongs to the BMI2 CPU feature.
Fixes: df7e295d18ff ("x86: Optimize {str|wcs}rchr-avx2")
Partially resolves: BZ #29611
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
(cherry picked from commit 7e8283170c5d6805b609a040801d819e362a6292)
diff --git a/sysdeps/x86_64/multiarch/ifunc-avx2.h b/sysdeps/x86_64/multiarch/ifunc-avx2.h
index 52bd00ea5cab6b22..877f007dd6e38fe8 100644
--- a/sysdeps/x86_64/multiarch/ifunc-avx2.h
+++ b/sysdeps/x86_64/multiarch/ifunc-avx2.h
@@ -30,6 +30,7 @@ IFUNC_SELECTOR (void)
const struct cpu_features* cpu_features = __get_cpu_features ();
if (CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI1)
&& CPU_FEATURE_USABLE_P (cpu_features, BMI2)
&& CPU_FEATURE_USABLE_P (cpu_features, LZCNT)
&& CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load))
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index d1fc1e75d6706413..84f9e73e2b7df816 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -498,15 +498,21 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/strrchr.c. */
IFUNC_IMPL (i, name, strrchr,
IFUNC_IMPL_ADD (array, i, strrchr,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)),
__strrchr_avx2)
IFUNC_IMPL_ADD (array, i, strrchr,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strrchr_avx2_rtm)
IFUNC_IMPL_ADD (array, i, strrchr,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)),
__strrchr_evex)
IFUNC_IMPL_ADD (array, i, strrchr, 1, __strrchr_sse2))
@@ -687,15 +693,20 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/wcsrchr.c. */
IFUNC_IMPL (i, name, wcsrchr,
IFUNC_IMPL_ADD (array, i, wcsrchr,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)),
__wcsrchr_avx2)
IFUNC_IMPL_ADD (array, i, wcsrchr,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__wcsrchr_avx2_rtm)
IFUNC_IMPL_ADD (array, i, wcsrchr,
(CPU_FEATURE_USABLE (AVX512VL)
&& CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI1)
&& CPU_FEATURE_USABLE (BMI2)),
__wcsrchr_evex)
IFUNC_IMPL_ADD (array, i, wcsrchr, 1, __wcsrchr_sse2))

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commit e3976287b22422787f3cc6fc9adda58304b55bd9
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Tue Oct 4 18:40:25 2022 -0400
nscd: Drop local address tuple variable [BZ #29607]
When a request needs to be resent (e.g. due to insufficient buffer
space), the references to subsequent tuples in the local variable are
stale and should not be used. This used to work by accident before, but
since 1d495912a it no longer does. Instead of trying to reset it, just
let gethostbyname4_r write into TUMPBUF6 for us, thus maintaining a
consistent state at all times. This is now consistent with what is done
in gaih_inet for getaddrinfo.
Resolves: BZ #29607
Reported-by: Holger Hoffstätte <holger@applied-asynchrony.com>
Tested-by: Holger Hoffstätte <holger@applied-asynchrony.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit 6e33e5c4b73cea7b8aa3de0947123db16200fb65)
diff --git a/nscd/aicache.c b/nscd/aicache.c
index 737ace11cc276021..3b300ad9b7db2297 100644
--- a/nscd/aicache.c
+++ b/nscd/aicache.c
@@ -111,11 +111,10 @@ addhstaiX (struct database_dyn *db, int fd, request_header *req,
"gethostbyname4_r");
if (fct4 != NULL)
{
- struct gaih_addrtuple atmem;
struct gaih_addrtuple *at;
while (1)
{
- at = &atmem;
+ at = NULL;
rc6 = 0;
herrno = 0;
status[1] = DL_CALL_FCT (fct4, (key, &at,
@@ -138,7 +137,7 @@ addhstaiX (struct database_dyn *db, int fd, request_header *req,
goto next_nip;
/* We found the data. Count the addresses and the size. */
- for (const struct gaih_addrtuple *at2 = at = &atmem; at2 != NULL;
+ for (const struct gaih_addrtuple *at2 = at; at2 != NULL;
at2 = at2->next)
{
++naddrs;

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commit c95ef423d78d9a2ec0a8e4141c78165434685c6f
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Sep 13 16:10:20 2022 +0200
nss: Implement --no-addrconfig option for getent
The ahosts, ahostsv4, ahostsv6 commands unconditionally pass
AI_ADDRCONFIG to getaddrinfo, which is not always desired.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit a623f13adfac47c8634a7288e08f821a846bc650)
diff --git a/nss/getent.c b/nss/getent.c
index ec48ba4bf1f5f788..0f4d549b05da73ac 100644
--- a/nss/getent.c
+++ b/nss/getent.c
@@ -59,6 +59,8 @@ static const struct argp_option args_options[] =
{
{ "service", 's', N_("CONFIG"), 0, N_("Service configuration to be used") },
{ "no-idn", 'i', NULL, 0, N_("disable IDN encoding") },
+ { "no-addrconfig", 'A', NULL, 0,
+ N_("do not filter out unsupported IPv4/IPv6 addresses (with ahosts*)") },
{ NULL, 0, NULL, 0, NULL },
};
@@ -80,6 +82,9 @@ static struct argp argp =
/* Additional getaddrinfo flags for IDN encoding. */
static int idn_flags = AI_IDN | AI_CANONIDN;
+/* Set to 0 by --no-addrconfig. */
+static int addrconfig_flags = AI_ADDRCONFIG;
+
/* Print the version information. */
static void
print_version (FILE *stream, struct argp_state *state)
@@ -347,7 +352,7 @@ ahosts_keys_int (int af, int xflags, int number, char *key[])
struct addrinfo hint;
memset (&hint, '\0', sizeof (hint));
- hint.ai_flags = (AI_V4MAPPED | AI_ADDRCONFIG | AI_CANONNAME
+ hint.ai_flags = (AI_V4MAPPED | addrconfig_flags | AI_CANONNAME
| idn_flags | xflags);
hint.ai_family = af;
@@ -906,6 +911,10 @@ parse_option (int key, char *arg, struct argp_state *state)
idn_flags = 0;
break;
+ case 'A':
+ addrconfig_flags = 0;
+ break;
+
default:
return ARGP_ERR_UNKNOWN;
}

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commit 16c7ed6e68c13e5a5efd8ab464ebf9d07b4b0bb3
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Sep 13 16:11:40 2022 +0200
nss: Fix tst-nss-files-hosts-long on single-stack hosts (bug 24816)
getent implicitly passes AI_ADDRCONFIG to getaddrinfo by default.
Use --no-addrconfig to suppress that, so that both IPv4 and IPv6
lookups succeed even if the address family is not supported by the
host.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit c75d20b5b27b0a60f0678236f51a4d3b0b058c00)
diff --git a/nss/tst-nss-files-hosts-long.c b/nss/tst-nss-files-hosts-long.c
index 00f8bea409e0b4cb..42676ba4056dbde2 100644
--- a/nss/tst-nss-files-hosts-long.c
+++ b/nss/tst-nss-files-hosts-long.c
@@ -28,14 +28,15 @@ do_test (void)
{
int ret;
- /* Run getent to fetch the IPv4 address for host test4.
- This forces /etc/hosts to be parsed. */
- ret = system("getent ahostsv4 test4");
+ /* Run getent to fetch the IPv4 address for host test4. This forces
+ /etc/hosts to be parsed. Use --no-addrconfig to return addresses
+ even in an IPv6-only environment. */
+ ret = system("getent --no-addrconfig ahostsv4 test4");
if (ret != 0)
FAIL_EXIT1("ahostsv4 failed");
/* Likewise for IPv6. */
- ret = system("getent ahostsv6 test6");
+ ret = system("getent --no-addrconfig ahostsv6 test6");
if (ret != 0)
FAIL_EXIT1("ahostsv6 failed");

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commit d5313bcb7e56cd949ca920bb0c741a1d1d4093cf
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Sep 23 19:30:57 2022 +0200
nss: Use shared prefix in IPv4 address in tst-reload1
Otherwise, sorting based on the longest-matching prefix in
getaddrinfo can reorder the addresses in ways the test does not
expect, depending on the IPv4 address of the host.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit c02e29a0ba47d636281e1a026444a1a0a254aa12)
diff --git a/nss/tst-reload1.c b/nss/tst-reload1.c
index 27a18ed9c37607bb..844cfcddc5e0f638 100644
--- a/nss/tst-reload1.c
+++ b/nss/tst-reload1.c
@@ -43,12 +43,12 @@ static struct passwd pwd_table_1[] = {
static const char *hostaddr_5[] =
{
- "ABCD", "abcd", "1234", NULL
+ "ABCd", "ABCD", "ABC4", NULL
};
static const char *hostaddr_15[] =
{
- "4321", "ghij", NULL
+ "4321", "4322", NULL
};
static const char *hostaddr_25[] =
@@ -86,12 +86,12 @@ static const char *hostaddr_6[] =
static const char *hostaddr_16[] =
{
- "7890", "a1b2", NULL
+ "7890", "7891", NULL
};
static const char *hostaddr_26[] =
{
- "qwer", "tyui", NULL
+ "qwer", "qweR", NULL
};
static struct hostent host_table_2[] = {

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@ -0,0 +1,92 @@
commit 9f55d2e7c42e6ca862a25d3ee3eb2b367811c30d
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Oct 14 12:43:07 2022 +0200
elf: Do not completely clear reused namespace in dlmopen (bug 29600)
The data in the _ns_debug member must be preserved, otherwise
_dl_debug_initialize enters an infinite loop. To be conservative,
only clear the libc_map member for now, to fix bug 29528.
Fixes commit d0e357ff45a75553dee3b17ed7d303bfa544f6fe
("elf: Call __libc_early_init for reused namespaces (bug 29528)"),
by reverting most of it.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit 2c42257314536b94cc8d52edede86e94e98c1436)
(Conflict in elf/dl-open.c due to missing _r_debug namespace support.)
diff --git a/elf/dl-open.c b/elf/dl-open.c
index 1ab3c7b5ac2fbc45..633b047ad2497296 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -839,15 +839,13 @@ _dl_open (const char *file, int mode, const void *caller_dlopen, Lmid_t nsid,
_dl_signal_error (EINVAL, file, NULL, N_("\
no more namespaces available for dlmopen()"));
}
+ else if (nsid == GL(dl_nns))
+ {
+ __rtld_lock_initialize (GL(dl_ns)[nsid]._ns_unique_sym_table.lock);
+ ++GL(dl_nns);
+ }
- if (nsid == GL(dl_nns))
- ++GL(dl_nns);
-
- /* Initialize the new namespace. Most members are
- zero-initialized, only the lock needs special treatment. */
- memset (&GL(dl_ns)[nsid], 0, sizeof (GL(dl_ns)[nsid]));
- __rtld_lock_initialize (GL(dl_ns)[nsid]._ns_unique_sym_table.lock);
-
+ GL(dl_ns)[nsid].libc_map = NULL;
_dl_debug_initialize (0, nsid)->r_state = RT_CONSISTENT;
}
/* Never allow loading a DSO in a namespace which is empty. Such
diff --git a/elf/tst-dlmopen-twice.c b/elf/tst-dlmopen-twice.c
index 449f3c8fa9f2aa01..70c71fe19c7d0bf9 100644
--- a/elf/tst-dlmopen-twice.c
+++ b/elf/tst-dlmopen-twice.c
@@ -16,18 +16,38 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#include <support/xdlfcn.h>
+#include <stdio.h>
#include <support/check.h>
+#include <support/xdlfcn.h>
-static int
-do_test (void)
+/* Run the test multiple times, to check finding a new namespace while
+ another namespace is already in use. This used to trigger bug 29600. */
+static void
+recurse (int depth)
{
- void *handle = xdlmopen (LM_ID_NEWLM, "tst-dlmopen-twice-mod1.so", RTLD_NOW);
+ if (depth == 0)
+ return;
+
+ printf ("info: running at depth %d\n", depth);
+ void *handle = xdlmopen (LM_ID_NEWLM, "tst-dlmopen-twice-mod1.so",
+ RTLD_NOW);
xdlclose (handle);
handle = xdlmopen (LM_ID_NEWLM, "tst-dlmopen-twice-mod2.so", RTLD_NOW);
int (*run_check) (void) = xdlsym (handle, "run_check");
TEST_COMPARE (run_check (), 0);
+ recurse (depth - 1);
xdlclose (handle);
+}
+
+static int
+do_test (void)
+{
+ /* First run the test without nesting. */
+ recurse (1);
+
+ /* Then with nesting. The constant needs to be less than the
+ internal DL_NNS namespace constant. */
+ recurse (10);
return 0;
}

861
SOURCES/glibc-upstream-2.34-350.patch
Unescape View File

@ -0,0 +1,861 @@
commit ca5df795459b9242cd7d787ebf71a09be2244577
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Wed Oct 19 19:14:04 2022 -0300
linux: Fix generic struct_stat for 64 bit time (BZ# 29657)
The generic Linux struct_stat misses the conditionals to use
bits/struct_stat_time64_helper.h in the __USE_TIME_BITS64 for
architecture that uses __TIMESIZE == 32 (currently csky and nios2).
Since newer ports should not support 32 bit time_t, the generic
implementation should be used as default.
For arm, hppa, and sh a copy of default struct_stat is added,
while for csky and nios a new one based on generic is used, along
with conditionals to use bits/struct_stat_time64_helper.h.
The default struct_stat is also replaced with the generic one.
Checked on aarch64-linux-gnu and arm-linux-gnueabihf.
(cherry picked from commit 7a6ca82f8007ddbd43e2b8fce806ba7101ee47f5)
diff --git a/sysdeps/unix/sysv/linux/arm/bits/struct_stat.h b/sysdeps/unix/sysv/linux/arm/bits/struct_stat.h
new file mode 100644
index 0000000000000000..30ee6279d2701242
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/bits/struct_stat.h
@@ -0,0 +1,139 @@
+/* Definition for struct stat. Linux/arm version.
+ Copyright (C) 2020-2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+#if !defined _SYS_STAT_H && !defined _FCNTL_H
+# error "Never include <bits/struct_stat.h> directly; use <sys/stat.h> instead."
+#endif
+
+#ifndef _BITS_STRUCT_STAT_H
+#define _BITS_STRUCT_STAT_H 1
+
+#include <bits/endian.h>
+#include <bits/wordsize.h>
+
+struct stat
+ {
+#ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+#else
+ __dev_t st_dev; /* Device. */
+ unsigned short int __pad1;
+# ifndef __USE_FILE_OFFSET64
+ __ino_t st_ino; /* File serial number. */
+# else
+ __ino_t __st_ino; /* 32bit file serial number. */
+# endif
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ unsigned short int __pad2;
+# ifndef __USE_FILE_OFFSET64
+ __off_t st_size; /* Size of file, in bytes. */
+# else
+ __off64_t st_size; /* Size of file, in bytes. */
+# endif
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+# ifndef __USE_FILE_OFFSET64
+ __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
+# else
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+# endif
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+# ifndef __USE_FILE_OFFSET64
+ unsigned long int __glibc_reserved4;
+ unsigned long int __glibc_reserved5;
+# else
+ __ino64_t st_ino; /* File serial number. */
+# endif
+#endif /* __USE_TIME_BITS64 */
+ };
+
+#ifdef __USE_LARGEFILE64
+struct stat64
+ {
+# ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+# else
+ __dev_t st_dev; /* Device. */
+ unsigned int __pad1;
+
+ __ino_t __st_ino; /* 32bit file serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ unsigned int __pad2;
+ __off64_t st_size; /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+ __ino64_t st_ino; /* File serial number. */
+# endif /* __USE_TIME_BITS64 */
+ };
+#endif
+
+/* Tell code we have these members. */
+#define _STATBUF_ST_BLKSIZE
+#define _STATBUF_ST_RDEV
+/* Nanosecond resolution time values are supported. */
+#define _STATBUF_ST_NSEC
+
+
+#endif /* _BITS_STRUCT_STAT_H */
diff --git a/sysdeps/unix/sysv/linux/bits/struct_stat.h b/sysdeps/unix/sysv/linux/bits/struct_stat.h
index 298418966f4d6e0b..32ef511ae5728276 100644
--- a/sysdeps/unix/sysv/linux/bits/struct_stat.h
+++ b/sysdeps/unix/sysv/linux/bits/struct_stat.h
@@ -26,37 +26,36 @@
#include <bits/endian.h>
#include <bits/wordsize.h>
-struct stat
- {
-#ifdef __USE_TIME_BITS64
-# include <bits/struct_stat_time64_helper.h>
-#else
- __dev_t st_dev; /* Device. */
- unsigned short int __pad1;
-# ifndef __USE_FILE_OFFSET64
- __ino_t st_ino; /* File serial number. */
-# else
- __ino_t __st_ino; /* 32bit file serial number. */
+#if defined __USE_FILE_OFFSET64
+# define __field64(type, type64, name) type64 name
+#elif __WORDSIZE == 64 || defined __INO_T_MATCHES_INO64_T
+# if defined __INO_T_MATCHES_INO64_T && !defined __OFF_T_MATCHES_OFF64_T
+# error "ino_t and off_t must both be the same type"
# endif
- __mode_t st_mode; /* File mode. */
- __nlink_t st_nlink; /* Link count. */
- __uid_t st_uid; /* User ID of the file's owner. */
- __gid_t st_gid; /* Group ID of the file's group.*/
- __dev_t st_rdev; /* Device number, if device. */
- unsigned short int __pad2;
-# ifndef __USE_FILE_OFFSET64
- __off_t st_size; /* Size of file, in bytes. */
-# else
- __off64_t st_size; /* Size of file, in bytes. */
-# endif
- __blksize_t st_blksize; /* Optimal block size for I/O. */
+# define __field64(type, type64, name) type name
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+# define __field64(type, type64, name) \
+ type name __attribute__((__aligned__ (__alignof__ (type64)))); int __##name##_pad
+#else
+# define __field64(type, type64, name) \
+ int __##name##_pad __attribute__((__aligned__ (__alignof__ (type64)))); type name
+#endif
-# ifndef __USE_FILE_OFFSET64
- __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
-# else
- __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
-# endif
-# ifdef __USE_XOPEN2K8
+struct stat
+ {
+ __dev_t st_dev; /* Device. */
+ __field64(__ino_t, __ino64_t, st_ino); /* File serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ __dev_t __pad1;
+ __field64(__off_t, __off64_t, st_size); /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+ int __pad2;
+ __field64(__blkcnt_t, __blkcnt64_t, st_blocks); /* 512-byte blocks */
+#ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
@@ -66,47 +65,38 @@ struct stat
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
-# define st_atime st_atim.tv_sec /* Backward compatibility. */
-# define st_mtime st_mtim.tv_sec
-# define st_ctime st_ctim.tv_sec
-# else
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+#else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
-# endif
-# ifndef __USE_FILE_OFFSET64
- unsigned long int __glibc_reserved4;
- unsigned long int __glibc_reserved5;
-# else
- __ino64_t st_ino; /* File serial number. */
-# endif
-#endif /* __USE_TIME_BITS64 */
+#endif
+ int __glibc_reserved[2];
};
+#undef __field64
+
#ifdef __USE_LARGEFILE64
struct stat64
{
-# ifdef __USE_TIME_BITS64
-# include <bits/struct_stat_time64_helper.h>
-# else
- __dev_t st_dev; /* Device. */
- unsigned int __pad1;
-
- __ino_t __st_ino; /* 32bit file serial number. */
- __mode_t st_mode; /* File mode. */
- __nlink_t st_nlink; /* Link count. */
- __uid_t st_uid; /* User ID of the file's owner. */
- __gid_t st_gid; /* Group ID of the file's group.*/
- __dev_t st_rdev; /* Device number, if device. */
- unsigned int __pad2;
- __off64_t st_size; /* Size of file, in bytes. */
- __blksize_t st_blksize; /* Optimal block size for I/O. */
-
- __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
-# ifdef __USE_XOPEN2K8
+ __dev_t st_dev; /* Device. */
+ __ino64_t st_ino; /* File serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ __dev_t __pad1;
+ __off64_t st_size; /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+ int __pad2;
+ __blkcnt64_t st_blocks; /* Nr. 512-byte blocks allocated. */
+#ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
@@ -116,16 +106,15 @@ struct stat64
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
-# else
+#else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
-# endif
- __ino64_t st_ino; /* File serial number. */
-# endif /* __USE_TIME_BITS64 */
+#endif
+ int __glibc_reserved[2];
};
#endif
@@ -135,5 +124,4 @@ struct stat64
/* Nanosecond resolution time values are supported. */
#define _STATBUF_ST_NSEC
-
#endif /* _BITS_STRUCT_STAT_H */
diff --git a/sysdeps/unix/sysv/linux/generic/bits/struct_stat.h b/sysdeps/unix/sysv/linux/csky/bits/struct_stat.h
similarity index 91%
rename from sysdeps/unix/sysv/linux/generic/bits/struct_stat.h
rename to sysdeps/unix/sysv/linux/csky/bits/struct_stat.h
index 32ef511ae5728276..f0ee455748d3ee41 100644
--- a/sysdeps/unix/sysv/linux/generic/bits/struct_stat.h
+++ b/sysdeps/unix/sysv/linux/csky/bits/struct_stat.h
@@ -1,5 +1,5 @@
-/* Definition for struct stat.
- Copyright (C) 2020-2021 Free Software Foundation, Inc.
+/* Definition for struct stat. Linux/csky version.
+ Copyright (C) 2020-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -43,6 +43,9 @@
struct stat
{
+#ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+#else
__dev_t st_dev; /* Device. */
__field64(__ino_t, __ino64_t, st_ino); /* File serial number. */
__mode_t st_mode; /* File mode. */
@@ -55,7 +58,7 @@ struct stat
__blksize_t st_blksize; /* Optimal block size for I/O. */
int __pad2;
__field64(__blkcnt_t, __blkcnt64_t, st_blocks); /* 512-byte blocks */
-#ifdef __USE_XOPEN2K8
+# ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
@@ -65,18 +68,19 @@ struct stat
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
-# define st_atime st_atim.tv_sec /* Backward compatibility. */
-# define st_mtime st_mtim.tv_sec
-# define st_ctime st_ctim.tv_sec
-#else
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+# else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
-#endif
+# endif
int __glibc_reserved[2];
+#endif
};
#undef __field64
@@ -84,6 +88,9 @@ struct stat
#ifdef __USE_LARGEFILE64
struct stat64
{
+# ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+# else
__dev_t st_dev; /* Device. */
__ino64_t st_ino; /* File serial number. */
__mode_t st_mode; /* File mode. */
@@ -96,7 +103,7 @@ struct stat64
__blksize_t st_blksize; /* Optimal block size for I/O. */
int __pad2;
__blkcnt64_t st_blocks; /* Nr. 512-byte blocks allocated. */
-#ifdef __USE_XOPEN2K8
+# ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
@@ -106,15 +113,16 @@ struct stat64
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
-#else
+# else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
-#endif
+# endif
int __glibc_reserved[2];
+# endif
};
#endif
diff --git a/sysdeps/unix/sysv/linux/hppa/bits/struct_stat.h b/sysdeps/unix/sysv/linux/hppa/bits/struct_stat.h
new file mode 100644
index 0000000000000000..38b6e13e68890c29
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/hppa/bits/struct_stat.h
@@ -0,0 +1,139 @@
+/* Definition for struct stat. Linux/hppa version.
+ Copyright (C) 2020-2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+#if !defined _SYS_STAT_H && !defined _FCNTL_H
+# error "Never include <bits/struct_stat.h> directly; use <sys/stat.h> instead."
+#endif
+
+#ifndef _BITS_STRUCT_STAT_H
+#define _BITS_STRUCT_STAT_H 1
+
+#include <bits/endian.h>
+#include <bits/wordsize.h>
+
+struct stat
+ {
+#ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+#else
+ __dev_t st_dev; /* Device. */
+ unsigned short int __pad1;
+# ifndef __USE_FILE_OFFSET64
+ __ino_t st_ino; /* File serial number. */
+# else
+ __ino_t __st_ino; /* 32bit file serial number. */
+# endif
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ unsigned short int __pad2;
+# ifndef __USE_FILE_OFFSET64
+ __off_t st_size; /* Size of file, in bytes. */
+# else
+ __off64_t st_size; /* Size of file, in bytes. */
+# endif
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+# ifndef __USE_FILE_OFFSET64
+ __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
+# else
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+# endif
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+# ifndef __USE_FILE_OFFSET64
+ unsigned long int __glibc_reserved4;
+ unsigned long int __glibc_reserved5;
+# else
+ __ino64_t st_ino; /* File serial number. */
+# endif
+#endif /* __USE_TIME_BITS64 */
+ };
+
+#ifdef __USE_LARGEFILE64
+struct stat64
+ {
+# ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+# else
+ __dev_t st_dev; /* Device. */
+ unsigned int __pad1;
+
+ __ino_t __st_ino; /* 32bit file serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ unsigned int __pad2;
+ __off64_t st_size; /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+ __ino64_t st_ino; /* File serial number. */
+# endif /* __USE_TIME_BITS64 */
+ };
+#endif
+
+/* Tell code we have these members. */
+#define _STATBUF_ST_BLKSIZE
+#define _STATBUF_ST_RDEV
+/* Nanosecond resolution time values are supported. */
+#define _STATBUF_ST_NSEC
+
+
+#endif /* _BITS_STRUCT_STAT_H */
diff --git a/sysdeps/unix/sysv/linux/nios2/bits/struct_stat.h b/sysdeps/unix/sysv/linux/nios2/bits/struct_stat.h
new file mode 100644
index 0000000000000000..e00e71173e184b48
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/bits/struct_stat.h
@@ -0,0 +1,135 @@
+/* Definition for struct stat. Linux/nios2 version.
+ Copyright (C) 2020-2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+#if !defined _SYS_STAT_H && !defined _FCNTL_H
+# error "Never include <bits/struct_stat.h> directly; use <sys/stat.h> instead."
+#endif
+
+#ifndef _BITS_STRUCT_STAT_H
+#define _BITS_STRUCT_STAT_H 1
+
+#include <bits/endian.h>
+#include <bits/wordsize.h>
+
+#if defined __USE_FILE_OFFSET64
+# define __field64(type, type64, name) type64 name
+#elif __WORDSIZE == 64 || defined __INO_T_MATCHES_INO64_T
+# if defined __INO_T_MATCHES_INO64_T && !defined __OFF_T_MATCHES_OFF64_T
+# error "ino_t and off_t must both be the same type"
+# endif
+# define __field64(type, type64, name) type name
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+# define __field64(type, type64, name) \
+ type name __attribute__((__aligned__ (__alignof__ (type64)))); int __##name##_pad
+#else
+# define __field64(type, type64, name) \
+ int __##name##_pad __attribute__((__aligned__ (__alignof__ (type64)))); type name
+#endif
+
+struct stat
+ {
+#ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+#else
+ __dev_t st_dev; /* Device. */
+ __field64(__ino_t, __ino64_t, st_ino); /* File serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ __dev_t __pad1;
+ __field64(__off_t, __off64_t, st_size); /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+ int __pad2;
+ __field64(__blkcnt_t, __blkcnt64_t, st_blocks); /* 512-byte blocks */
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+ int __glibc_reserved[2];
+#endif
+ };
+
+#undef __field64
+
+#ifdef __USE_LARGEFILE64
+struct stat64
+ {
+# ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+# else
+ __dev_t st_dev; /* Device. */
+ __ino64_t st_ino; /* File serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ __dev_t __pad1;
+ __off64_t st_size; /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+ int __pad2;
+ __blkcnt64_t st_blocks; /* Nr. 512-byte blocks allocated. */
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+ int __glibc_reserved[2];
+# endif
+ };
+#endif
+
+/* Tell code we have these members. */
+#define _STATBUF_ST_BLKSIZE
+#define _STATBUF_ST_RDEV
+/* Nanosecond resolution time values are supported. */
+#define _STATBUF_ST_NSEC
+
+#endif /* _BITS_STRUCT_STAT_H */
diff --git a/sysdeps/unix/sysv/linux/sh/bits/struct_stat.h b/sysdeps/unix/sysv/linux/sh/bits/struct_stat.h
new file mode 100644
index 0000000000000000..0f7c9cdc89ebf686
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sh/bits/struct_stat.h
@@ -0,0 +1,139 @@
+/* Definition for struct stat. Linux/sh version.
+ Copyright (C) 2020-2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+#if !defined _SYS_STAT_H && !defined _FCNTL_H
+# error "Never include <bits/struct_stat.h> directly; use <sys/stat.h> instead."
+#endif
+
+#ifndef _BITS_STRUCT_STAT_H
+#define _BITS_STRUCT_STAT_H 1
+
+#include <bits/endian.h>
+#include <bits/wordsize.h>
+
+struct stat
+ {
+#ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+#else
+ __dev_t st_dev; /* Device. */
+ unsigned short int __pad1;
+# ifndef __USE_FILE_OFFSET64
+ __ino_t st_ino; /* File serial number. */
+# else
+ __ino_t __st_ino; /* 32bit file serial number. */
+# endif
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ unsigned short int __pad2;
+# ifndef __USE_FILE_OFFSET64
+ __off_t st_size; /* Size of file, in bytes. */
+# else
+ __off64_t st_size; /* Size of file, in bytes. */
+# endif
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+# ifndef __USE_FILE_OFFSET64
+ __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
+# else
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+# endif
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+# ifndef __USE_FILE_OFFSET64
+ unsigned long int __glibc_reserved4;
+ unsigned long int __glibc_reserved5;
+# else
+ __ino64_t st_ino; /* File serial number. */
+# endif
+#endif /* __USE_TIME_BITS64 */
+ };
+
+#ifdef __USE_LARGEFILE64
+struct stat64
+ {
+# ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+# else
+ __dev_t st_dev; /* Device. */
+ unsigned int __pad1;
+
+ __ino_t __st_ino; /* 32bit file serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ unsigned int __pad2;
+ __off64_t st_size; /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+ __ino64_t st_ino; /* File serial number. */
+# endif /* __USE_TIME_BITS64 */
+ };
+#endif
+
+/* Tell code we have these members. */
+#define _STATBUF_ST_BLKSIZE
+#define _STATBUF_ST_RDEV
+/* Nanosecond resolution time values are supported. */
+#define _STATBUF_ST_NSEC
+
+
+#endif /* _BITS_STRUCT_STAT_H */

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commit f42d871b22f7eb5330e77ed9bccbb447c44e7101
Author: Sergei Trofimovich <slyich@gmail.com>
Date: Tue Sep 13 13:39:13 2022 -0400
Makerules: fix MAKEFLAGS assignment for upcoming make-4.4 [BZ# 29564]
make-4.4 will add long flags to MAKEFLAGS variable:
* WARNING: Backward-incompatibility!
Previously only simple (one-letter) options were added to the MAKEFLAGS
variable that was visible while parsing makefiles. Now, all options
are available in MAKEFLAGS.
This causes locale builds to fail when long options are used:
$ make --shuffle
...
make -C localedata install-locales
make: invalid shuffle mode: '1662724426r'
The change fixes it by passing eash option via whitespace and dashes.
That way option is appended to both single-word form and whitespace
separated form.
While at it fixed --silent mode detection in $(MAKEFLAGS) by filtering
out --long-options. Otherwise options like --shuffle flag enable silent
mode unintentionally. $(silent-make) variable consolidates the checks.
Resolves: BZ# 29564
CC: Paul Smith <psmith@gnu.org>
CC: Siddhesh Poyarekar <siddhesh@gotplt.org>
Signed-off-by: Sergei Trofimovich <slyich@gmail.com>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 2d7ed98add14f75041499ac189696c9bd3d757fe)
diff --git a/Makeconfig b/Makeconfig
index 99898a632a64be91..4e04dafb76a1e1a1 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -43,6 +43,22 @@ else
$(error objdir must be defined by the build-directory Makefile)
endif
+# Did we request 'make -s' run? "yes" or "no".
+# Starting from make-4.4 MAKEFLAGS now contains long
+# options like '--shuffle'. To detect presence of 's'
+# we pick first word with short options. Long options
+# are guaranteed to come after whitespace. We use '-'
+# prefix to always have a word before long options
+# even if no short options were passed.
+# Typical MAKEFLAGS values to watch for:
+# "rs --shuffle=42" (silent)
+# " --shuffle" (not silent)
+ifeq ($(findstring s, $(firstword -$(MAKEFLAGS))),)
+silent-make := no
+else
+silent-make := yes
+endif
+
# Root of the sysdeps tree.
sysdep_dir := $(..)sysdeps
export sysdep_dir := $(sysdep_dir)
@@ -918,7 +934,7 @@ endif
# umpteen zillion filenames along with it (we use `...' instead)
# but we don't want this echoing done when the user has said
# he doesn't want to see commands echoed by using -s.
-ifneq "$(findstring s,$(MAKEFLAGS))" "" # if -s
+ifeq ($(silent-make),yes) # if -s
+cmdecho := echo >/dev/null
else # not -s
+cmdecho := echo
diff --git a/Makerules b/Makerules
index 7fbe85719aacc230..e5916f29fa0d4593 100644
--- a/Makerules
+++ b/Makerules
@@ -810,7 +810,7 @@ endif
# Maximize efficiency by minimizing the number of rules.
.SUFFIXES: # Clear the suffix list. We don't use suffix rules.
# Don't define any builtin rules.
-MAKEFLAGS := $(MAKEFLAGS)r
+MAKEFLAGS := $(MAKEFLAGS) -r
# Generic rule for making directories.
%/:
@@ -827,7 +827,7 @@ MAKEFLAGS := $(MAKEFLAGS)r
.PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
# Use the verbose option of ar and tar when not running silently.
-ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
+ifeq ($(silent-make),no) # if not -s
verbose := v
else # -s
verbose :=
diff --git a/elf/rtld-Rules b/elf/rtld-Rules
index 10de81918c07670f..a452536d39b5c198 100644
--- a/elf/rtld-Rules
+++ b/elf/rtld-Rules
@@ -52,7 +52,7 @@ $(objpfx)rtld-libc.a: $(foreach dir,$(rtld-subdirs),\
mv -f $@T $@
# Use the verbose option of ar and tar when not running silently.
-ifeq "$(findstring s,$(MAKEFLAGS))" "" # if not -s
+ifeq ($(silent-make),no) # if not -s
verbose := v
else # -s
verbose :=

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commit 675ba1f361ea424626b48a40cfd24d113dfc1b65
Author: Paul Eggert <eggert@cs.ucla.edu>
Date: Thu Sep 8 20:08:32 2022 -0500
mktime: improve heuristic for ca-1986 Indiana DST
This patch syncs mktime.c from Gnulib, fixing a
problem reported by Mark Krenz <https://bugs.gnu.org/48085>,
and it should fix BZ#29035 too.
* time/mktime.c (__mktime_internal): Be more generous about
accepting arguments with the wrong value of tm_isdst, by falling
back to a one-hour DST difference if we find no nearby DST that is
unusual. This fixes a problem where "1986-04-28 00:00 EDT" was
rejected when TZ="America/Indianapolis" because the nearest DST
timestamp occurred in 1970, a temporal distance too great for the
old heuristic. This also also narrows the search a bit, which
is a minor performance win.
(cherry picked from commit 83859e1115269cf56d21669361d4ddbe2687831c)
diff --git a/time/mktime.c b/time/mktime.c
index 8e78006eea7e693b..74d9bbaa5b375723 100644
--- a/time/mktime.c
+++ b/time/mktime.c
@@ -429,8 +429,13 @@ __mktime_internal (struct tm *tp,
time with the right value, and use its UTC offset.
Heuristic: probe the adjacent timestamps in both directions,
- looking for the desired isdst. This should work for all real
- time zone histories in the tz database. */
+ looking for the desired isdst. If none is found within a
+ reasonable duration bound, assume a one-hour DST difference.
+ This should work for all real time zone histories in the tz
+ database. */
+
+ /* +1 if we wanted standard time but got DST, -1 if the reverse. */
+ int dst_difference = (isdst == 0) - (tm.tm_isdst == 0);
/* Distance between probes when looking for a DST boundary. In
tzdata2003a, the shortest period of DST is 601200 seconds
@@ -441,12 +446,14 @@ __mktime_internal (struct tm *tp,
periods when probing. */
int stride = 601200;
- /* The longest period of DST in tzdata2003a is 536454000 seconds
- (e.g., America/Jujuy starting 1946-10-01 01:00). The longest
- period of non-DST is much longer, but it makes no real sense
- to search for more than a year of non-DST, so use the DST
- max. */
- int duration_max = 536454000;
+ /* In TZDB 2021e, the longest period of DST (or of non-DST), in
+ which the DST (or adjacent DST) difference is not one hour,
+ is 457243209 seconds: e.g., America/Cambridge_Bay with leap
+ seconds, starting 1965-10-31 00:00 in a switch from
+ double-daylight time (-05) to standard time (-07), and
+ continuing to 1980-04-27 02:00 in a switch from standard time
+ (-07) to daylight time (-06). */
+ int duration_max = 457243209;
/* Search in both directions, so the maximum distance is half
the duration; add the stride to avoid off-by-1 problems. */
@@ -483,6 +490,11 @@ __mktime_internal (struct tm *tp,
}
}
+ /* No unusual DST offset was found nearby. Assume one-hour DST. */
+ t += 60 * 60 * dst_difference;
+ if (mktime_min <= t && t <= mktime_max && convert_time (convert, t, &tm))
+ goto offset_found;
+
__set_errno (EOVERFLOW);
return -1;
}

86
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commit 6e8044e910600f71f4802dba2d105007af8428c3
Author: Joseph Myers <joseph@codesourcery.com>
Date: Mon Nov 8 19:11:51 2021 +0000
Fix memmove call in vfprintf-internal.c:group_number
A recent GCC mainline change introduces errors of the form:
vfprintf-internal.c: In function 'group_number':
vfprintf-internal.c:2093:15: error: 'memmove' specified bound between 9223372036854775808 and 18446744073709551615 exceeds maximum object size 9223372036854775807 [-Werror=stringop-overflow=]
2093 | memmove (w, s, (front_ptr -s) * sizeof (CHAR_T));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This is a genuine bug in the glibc code: s > front_ptr is always true
at this point in the code, and the intent is clearly for the
subtraction to be the other way round. The other arguments to the
memmove call here also appear to be wrong; w and s point just *after*
the destination and source for copying the rest of the number, so the
size needs to be subtracted to get appropriate pointers for the
copying. Adjust the memmove call to conform to the apparent intent of
the code, so fixing the -Wstringop-overflow error.
Now, if the original code were ever executed, a buffer overrun would
result. However, I believe this code (introduced in commit
edc1686af0c0fc2eb535f1d38cdf63c1a5a03675, "vfprintf: Reuse work_buffer
in group_number", so in glibc 2.26) is unreachable in prior glibc
releases (so there is no need for a bug in Bugzilla, no need to
consider any backports unless someone wants to build older glibc
releases with GCC 12 and no possibility of this buffer overrun
resulting in a security issue).
work_buffer is 1000 bytes / 250 wide characters. This case is only
reachable if an initial part of the number, plus a grouped copy of the
rest of the number, fail to fit in that space; that is, if the grouped
number fails to fit in the space. In the wide character case,
grouping is always one wide character, so even with a locale (of which
there aren't any in glibc) grouping every digit, a number would need
to occupy at least 125 wide characters to overflow, and a 64-bit
integer occupies at most 23 characters in octal including a leading 0.
In the narrow character case, the multibyte encoding of the grouping
separator would need to be at least 42 bytes to overflow, again
supposing grouping every digit, but MB_LEN_MAX is 16. So even if we
admit the case of artificially constructed locales not shipped with
glibc, given that such a locale would need to use one of the character
sets supported by glibc, this code cannot be reached at present. (And
POSIX only actually specifies the ' flag for grouping for decimal
output, though glibc acts on it for other bases as well.)
With binary output (if you consider use of grouping there to be
valid), you'd need a 15-byte multibyte character for overflow; I don't
know if any supported character set has such a character (if, again,
we admit constructed locales using grouping every digit and a grouping
separator chosen to have a multibyte encoding as long as possible, as
well as accepting use of grouping with binary), but given that we have
this code at all (clearly it's not *correct*, or in accordance with
the principle of avoiding arbitrary limits, to skip grouping on
running out of internal space like that), I don't think it should need
any further changes for binary printf support to go in.
On the other hand, support for large sizes of _BitInt in printf (see
the N2858 proposal) *would* require something to be done about such
arbitrary limits (presumably using dynamic allocation in printf again,
for sufficiently large _BitInt arguments only - currently only
floating-point uses dynamic allocation, and, as previously discussed,
that could actually be replaced by bounded allocation given smarter
code).
Tested with build-many-glibcs.py for aarch64-linux-gnu (GCC mainline).
Also tested natively for x86_64.
(cherry picked from commit db6c4935fae6005d46af413b32aa92f4f6059dce)
diff --git a/stdio-common/vfprintf-internal.c b/stdio-common/vfprintf-internal.c
index 3f3d1e148a8e7fda..53d93b2f07ecb261 100644
--- a/stdio-common/vfprintf-internal.c
+++ b/stdio-common/vfprintf-internal.c
@@ -2154,7 +2154,8 @@ group_number (CHAR_T *front_ptr, CHAR_T *w, CHAR_T *rear_ptr,
copy_rest:
/* No further grouping to be done. Copy the rest of the
number. */
- memmove (w, s, (front_ptr -s) * sizeof (CHAR_T));
+ w -= s - front_ptr;
+ memmove (w, front_ptr, (s - front_ptr) * sizeof (CHAR_T));
break;
}
else if (*grouping != '\0')

35
SOURCES/glibc-upstream-2.34-354.patch
Unescape View File

@ -0,0 +1,35 @@
commit 291d4402067760edb7c0f339f9e451787a25e20a
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Aug 27 17:47:46 2021 +0000
Allow #pragma GCC in headers in conformtest
No "#pragma GCC" pragma allows macro-expansion of its arguments, so no
namespace issues arise from use of such pragmas in installed headers.
Ignore them in conformtest tests of header namespace.
Tested for x86_64, in conjunction with Paul's patch
<https://sourceware.org/pipermail/libc-alpha/2021-August/130571.html>
adding use of such pragmas to installed headers shared with gnulib.
(cherry picked from commit 6090a4a1b32fd7859d0ad5b7e9b240bd5fa04b3f)
diff --git a/conform/conformtest.py b/conform/conformtest.py
index 4898e16c9fb96503..164cf2917d464aa1 100644
--- a/conform/conformtest.py
+++ b/conform/conformtest.py
@@ -631,6 +631,14 @@ class HeaderTests(object):
continue
if re.match(r'# [1-9]', line):
continue
+ if line.startswith('#pragma GCC '):
+ # No GCC pragma uses macro expansion, so no
+ # namespace issues arise from such pragmas. (Some
+ # pragmas not in the GCC namespace do macro-expand
+ # their arguments and so could be affected by
+ # macros defined by user code including the
+ # header.)
+ continue
match = re.match(r'#define (.*)', line)
if match:
self.check_token(bad_tokens, match.group(1))

629
SOURCES/glibc-upstream-2.34-355.patch
Unescape View File

@ -0,0 +1,629 @@
commit 86a701a20479dfbc23540b3143fd5b28660a2447
Author: Paul Eggert <eggert@cs.ucla.edu>
Date: Tue Sep 21 07:47:45 2021 -0700
regex: copy back from Gnulib
Copy regex-related files back from Gnulib, to fix a problem with
static checking of regex calls noted by Martin Sebor. This merges the
following changes:
* New macro __attribute_nonnull__ in misc/sys/cdefs.h, for use later
when copying other files back from Gnulib.
* Use __GNULIB_CDEFS instead of __GLIBC__ when deciding
whether to include bits/wordsize.h etc.
* Avoid duplicate entries in epsilon closure table.
* New regex.h macro _REGEX_NELTS to let regexec say that its pmatch
arg should contain nmatch elts. Use that for regexec, instead of
__attr_access (which is incorrect).
* New regex.h macro _Attr_access_ which is like __attr_access except
portable to non-glibc platforms.
* Add some DEBUG_ASSERTs to pacify gcc -fanalyzer and to catch
recently-fixed performance bugs if they recur.
* Add Gnulib-specific stuff to port the dynarray- and lock-using parts
of regex code to non-glibc platforms.
* Fix glibc bug 11053.
* Avoid some undefined behavior when popping an empty fail stack.
(cherry picked from commit 0b5ca7c3e551e5502f3be3b06453324fe8604e82)
diff --git a/include/intprops.h b/include/intprops.h
index 967e32ea0cbedd56..9d10028a5966c1c6 100644
--- a/include/intprops.h
+++ b/include/intprops.h
@@ -133,7 +133,8 @@
operators might not yield numerically correct answers due to
arithmetic overflow. They do not rely on undefined or
implementation-defined behavior. Their implementations are simple
- and straightforward, but they are a bit harder to use than the
+ and straightforward, but they are harder to use and may be less
+ efficient than the INT_<op>_WRAPV, INT_<op>_OK, and
INT_<op>_OVERFLOW macros described below.
Example usage:
@@ -158,6 +159,9 @@
must have minimum value MIN and maximum MAX. Unsigned types should
use a zero MIN of the proper type.
+ Because all arguments are subject to integer promotions, these
+ macros typically do not work on types narrower than 'int'.
+
These macros are tuned for constant MIN and MAX. For commutative
operations such as A + B, they are also tuned for constant B. */
@@ -339,9 +343,15 @@
arguments should not have side effects.
The WRAPV macros are not constant expressions. They support only
- +, binary -, and *. Because the WRAPV macros convert the result,
- they report overflow in different circumstances than the OVERFLOW
- macros do.
+ +, binary -, and *.
+
+ Because the WRAPV macros convert the result, they report overflow
+ in different circumstances than the OVERFLOW macros do. For
+ example, in the typical case with 16-bit 'short' and 32-bit 'int',
+ if A, B and R are all of type 'short' then INT_ADD_OVERFLOW (A, B)
+ returns false because the addition cannot overflow after A and B
+ are converted to 'int', whereas INT_ADD_WRAPV (A, B, &R) returns
+ true or false depending on whether the sum fits into 'short'.
These macros are tuned for their last input argument being a constant.
diff --git a/include/regex.h b/include/regex.h
index 24eca2c297bb6043..34fb67d85536bcb9 100644
--- a/include/regex.h
+++ b/include/regex.h
@@ -37,7 +37,8 @@ extern int __regcomp (regex_t *__preg, const char *__pattern, int __cflags);
libc_hidden_proto (__regcomp)
extern int __regexec (const regex_t *__preg, const char *__string,
- size_t __nmatch, regmatch_t __pmatch[], int __eflags);
+ size_t __nmatch, regmatch_t __pmatch[__nmatch],
+ int __eflags);
libc_hidden_proto (__regexec)
extern size_t __regerror (int __errcode, const regex_t *__preg,
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index e0ecd9147ee3ce48..b166f3d209fe361f 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -366,16 +366,18 @@
#endif
/* The nonnull function attribute marks pointer parameters that
- must not be NULL. */
-#ifndef __nonnull
+ must not be NULL. This has the name __nonnull in glibc,
+ and __attribute_nonnull__ in files shared with Gnulib to avoid
+ collision with a different __nonnull in DragonFlyBSD 5.9. */
+#ifndef __attribute_nonnull__
# if __GNUC_PREREQ (3,3) || __glibc_has_attribute (__nonnull__)
-# define __nonnull(params) __attribute__ ((__nonnull__ params))
+# define __attribute_nonnull__(params) __attribute__ ((__nonnull__ params))
# else
-# define __nonnull(params)
+# define __attribute_nonnull__(params)
# endif
-#elif !defined __GLIBC__
-# undef __nonnull
-# define __nonnull(params) _GL_ATTRIBUTE_NONNULL (params)
+#endif
+#ifndef __nonnull
+# define __nonnull(params) __attribute_nonnull__ (params)
#endif
/* The returns_nonnull function attribute marks the return type of the function
@@ -541,9 +543,9 @@
[!!sizeof (struct { int __error_if_negative: (expr) ? 2 : -1; })]
#endif
-/* The #ifndef lets Gnulib avoid including these on non-glibc
- platforms, where the includes typically do not exist. */
-#ifdef __GLIBC__
+/* Gnulib avoids including these, as they don't work on non-glibc or
+ older glibc platforms. */
+#ifndef __GNULIB_CDEFS
# include <bits/wordsize.h>
# include <bits/long-double.h>
#endif
diff --git a/posix/regcomp.c b/posix/regcomp.c
index d93698ae78447b46..887e5b50684e22f5 100644
--- a/posix/regcomp.c
+++ b/posix/regcomp.c
@@ -1695,12 +1695,14 @@ calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa, Idx node, bool root)
reg_errcode_t err;
Idx i;
re_node_set eclosure;
- bool ok;
bool incomplete = false;
err = re_node_set_alloc (&eclosure, dfa->edests[node].nelem + 1);
if (__glibc_unlikely (err != REG_NOERROR))
return err;
+ /* An epsilon closure includes itself. */
+ eclosure.elems[eclosure.nelem++] = node;
+
/* This indicates that we are calculating this node now.
We reference this value to avoid infinite loop. */
dfa->eclosures[node].nelem = -1;
@@ -1753,10 +1755,6 @@ calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa, Idx node, bool root)
}
}
- /* An epsilon closure includes itself. */
- ok = re_node_set_insert (&eclosure, node);
- if (__glibc_unlikely (! ok))
- return REG_ESPACE;
if (incomplete && !root)
dfa->eclosures[node].nelem = 0;
else
diff --git a/posix/regex.c b/posix/regex.c
index 7296be0f08da88d8..d32863972c7bcdcf 100644
--- a/posix/regex.c
+++ b/posix/regex.c
@@ -24,6 +24,7 @@
# if __GNUC_PREREQ (4, 6)
# pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
+# pragma GCC diagnostic ignored "-Wvla"
# endif
# if __GNUC_PREREQ (4, 3)
# pragma GCC diagnostic ignored "-Wold-style-definition"
diff --git a/posix/regex.h b/posix/regex.h
index 14fb1d8364a11d29..adb69768ee520554 100644
--- a/posix/regex.h
+++ b/posix/regex.h
@@ -522,6 +522,30 @@ typedef struct
/* Declarations for routines. */
+#ifndef _REGEX_NELTS
+# if (defined __STDC_VERSION__ && 199901L <= __STDC_VERSION__ \
+ && !defined __STDC_NO_VLA__)
+# define _REGEX_NELTS(n) n
+# else
+# define _REGEX_NELTS(n)
+# endif
+#endif
+
+#if defined __GNUC__ && 4 < __GNUC__ + (6 <= __GNUC_MINOR__)
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Wvla"
+#endif
+
+#ifndef _Attr_access_
+# ifdef __attr_access
+# define _Attr_access_(arg) __attr_access (arg)
+# elif defined __GNUC__ && 10 <= __GNUC__
+# define _Attr_access_(x) __attribute__ ((__access__ x))
+# else
+# define _Attr_access_(x)
+# endif
+#endif
+
#ifdef __USE_GNU
/* Sets the current default syntax to SYNTAX, and return the old syntax.
You can also simply assign to the 're_syntax_options' variable. */
@@ -537,7 +561,7 @@ extern reg_syntax_t re_set_syntax (reg_syntax_t __syntax);
'regfree'. */
extern const char *re_compile_pattern (const char *__pattern, size_t __length,
struct re_pattern_buffer *__buffer)
- __attr_access ((__read_only__, 1, 2));
+ _Attr_access_ ((__read_only__, 1, 2));
/* Compile a fastmap for the compiled pattern in BUFFER; used to
@@ -555,7 +579,7 @@ extern regoff_t re_search (struct re_pattern_buffer *__buffer,
const char *__String, regoff_t __length,
regoff_t __start, regoff_t __range,
struct re_registers *__regs)
- __attr_access ((__read_only__, 2, 3));
+ _Attr_access_ ((__read_only__, 2, 3));
/* Like 're_search', but search in the concatenation of STRING1 and
@@ -566,8 +590,8 @@ extern regoff_t re_search_2 (struct re_pattern_buffer *__buffer,
regoff_t __start, regoff_t __range,
struct re_registers *__regs,
regoff_t __stop)
- __attr_access ((__read_only__, 2, 3))
- __attr_access ((__read_only__, 4, 5));
+ _Attr_access_ ((__read_only__, 2, 3))
+ _Attr_access_ ((__read_only__, 4, 5));
/* Like 're_search', but return how many characters in STRING the regexp
@@ -575,7 +599,7 @@ extern regoff_t re_search_2 (struct re_pattern_buffer *__buffer,
extern regoff_t re_match (struct re_pattern_buffer *__buffer,
const char *__String, regoff_t __length,
regoff_t __start, struct re_registers *__regs)
- __attr_access ((__read_only__, 2, 3));
+ _Attr_access_ ((__read_only__, 2, 3));
/* Relates to 're_match' as 're_search_2' relates to 're_search'. */
@@ -584,8 +608,8 @@ extern regoff_t re_match_2 (struct re_pattern_buffer *__buffer,
const char *__string2, regoff_t __length2,
regoff_t __start, struct re_registers *__regs,
regoff_t __stop)
- __attr_access ((__read_only__, 2, 3))
- __attr_access ((__read_only__, 4, 5));
+ _Attr_access_ ((__read_only__, 2, 3))
+ _Attr_access_ ((__read_only__, 4, 5));
/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
@@ -654,16 +678,19 @@ extern int regcomp (regex_t *_Restrict_ __preg,
extern int regexec (const regex_t *_Restrict_ __preg,
const char *_Restrict_ __String, size_t __nmatch,
- regmatch_t __pmatch[_Restrict_arr_],
- int __eflags)
- __attr_access ((__write_only__, 4, 3));
+ regmatch_t __pmatch[_Restrict_arr_
+ _REGEX_NELTS (__nmatch)],
+ int __eflags);
extern size_t regerror (int __errcode, const regex_t *_Restrict_ __preg,
char *_Restrict_ __errbuf, size_t __errbuf_size)
- __attr_access ((__write_only__, 3, 4));
+ _Attr_access_ ((__write_only__, 3, 4));
extern void regfree (regex_t *__preg);
+#if defined __GNUC__ && 4 < __GNUC__ + (6 <= __GNUC_MINOR__)
+# pragma GCC diagnostic pop
+#endif
#ifdef __cplusplus
}
diff --git a/posix/regex_internal.c b/posix/regex_internal.c
index 9dd387ef85d64e62..aefcfa2f52e68c6a 100644
--- a/posix/regex_internal.c
+++ b/posix/regex_internal.c
@@ -1211,6 +1211,10 @@ re_node_set_merge (re_node_set *dest, const re_node_set *src)
if (__glibc_unlikely (dest->nelem == 0))
{
+ /* Although we already guaranteed above that dest->alloc != 0 and
+ therefore dest->elems != NULL, add a debug assertion to pacify
+ GCC 11.2.1's -fanalyzer. */
+ DEBUG_ASSERT (dest->elems);
dest->nelem = src->nelem;
memcpy (dest->elems, src->elems, src->nelem * sizeof (Idx));
return REG_NOERROR;
@@ -1286,7 +1290,10 @@ re_node_set_insert (re_node_set *set, Idx elem)
if (__glibc_unlikely (set->nelem) == 0)
{
- /* We already guaranteed above that set->alloc != 0. */
+ /* Although we already guaranteed above that set->alloc != 0 and
+ therefore set->elems != NULL, add a debug assertion to pacify
+ GCC 11.2 -fanalyzer. */
+ DEBUG_ASSERT (set->elems);
set->elems[0] = elem;
++set->nelem;
return true;
@@ -1314,6 +1321,7 @@ re_node_set_insert (re_node_set *set, Idx elem)
{
for (idx = set->nelem; set->elems[idx - 1] > elem; idx--)
set->elems[idx] = set->elems[idx - 1];
+ DEBUG_ASSERT (set->elems[idx - 1] < elem);
}
/* Insert the new element. */
diff --git a/posix/regex_internal.h b/posix/regex_internal.h
index edcdc07e999694ac..1245e782ffc69086 100644
--- a/posix/regex_internal.h
+++ b/posix/regex_internal.h
@@ -32,6 +32,10 @@
#include <stdbool.h>
#include <stdint.h>
+#ifndef _LIBC
+# include <dynarray.h>
+#endif
+
#include <intprops.h>
#include <verify.h>
@@ -49,14 +53,14 @@
# define lock_fini(lock) ((void) 0)
# define lock_lock(lock) __libc_lock_lock (lock)
# define lock_unlock(lock) __libc_lock_unlock (lock)
-#elif defined GNULIB_LOCK && !defined USE_UNLOCKED_IO
+#elif defined GNULIB_LOCK && !defined GNULIB_REGEX_SINGLE_THREAD
# include "glthread/lock.h"
# define lock_define(name) gl_lock_define (, name)
# define lock_init(lock) glthread_lock_init (&(lock))
# define lock_fini(lock) glthread_lock_destroy (&(lock))
# define lock_lock(lock) glthread_lock_lock (&(lock))
# define lock_unlock(lock) glthread_lock_unlock (&(lock))
-#elif defined GNULIB_PTHREAD && !defined USE_UNLOCKED_IO
+#elif defined GNULIB_PTHREAD && !defined GNULIB_REGEX_SINGLE_THREAD
# include <pthread.h>
# define lock_define(name) pthread_mutex_t name;
# define lock_init(lock) pthread_mutex_init (&(lock), 0)
diff --git a/posix/regexec.c b/posix/regexec.c
index f7b4f9cfc3f030df..83e9aaf8cad956a2 100644
--- a/posix/regexec.c
+++ b/posix/regexec.c
@@ -59,7 +59,7 @@ static void update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
Idx cur_idx, Idx nmatch);
static reg_errcode_t push_fail_stack (struct re_fail_stack_t *fs,
Idx str_idx, Idx dest_node, Idx nregs,
- regmatch_t *regs,
+ regmatch_t *regs, regmatch_t *prevregs,
re_node_set *eps_via_nodes);
static reg_errcode_t set_regs (const regex_t *preg,
const re_match_context_t *mctx,
@@ -186,11 +186,12 @@ static reg_errcode_t extend_buffers (re_match_context_t *mctx, int min_len);
REG_NOTBOL is set, then ^ does not match at the beginning of the
string; if REG_NOTEOL is set, then $ does not match at the end.
- We return 0 if we find a match and REG_NOMATCH if not. */
+ Return 0 if a match is found, REG_NOMATCH if not, REG_BADPAT if
+ EFLAGS is invalid. */
int
regexec (const regex_t *__restrict preg, const char *__restrict string,
- size_t nmatch, regmatch_t pmatch[], int eflags)
+ size_t nmatch, regmatch_t pmatch[_REGEX_NELTS (nmatch)], int eflags)
{
reg_errcode_t err;
Idx start, length;
@@ -234,7 +235,7 @@ int
attribute_compat_text_section
__compat_regexec (const regex_t *__restrict preg,
const char *__restrict string, size_t nmatch,
- regmatch_t pmatch[], int eflags)
+ regmatch_t pmatch[_REGEX_NELTS (nmatch)], int eflags)
{
return regexec (preg, string, nmatch, pmatch,
eflags & (REG_NOTBOL | REG_NOTEOL));
@@ -269,8 +270,8 @@ compat_symbol (libc, __compat_regexec, regexec, GLIBC_2_0);
strings.)
On success, re_match* functions return the length of the match, re_search*
- return the position of the start of the match. Return value -1 means no
- match was found and -2 indicates an internal error. */
+ return the position of the start of the match. They return -1 on
+ match failure, -2 on error. */
regoff_t
re_match (struct re_pattern_buffer *bufp, const char *string, Idx length,
@@ -1206,27 +1207,30 @@ check_halt_state_context (const re_match_context_t *mctx,
/* Compute the next node to which "NFA" transit from NODE("NFA" is a NFA
corresponding to the DFA).
Return the destination node, and update EPS_VIA_NODES;
- return -1 in case of errors. */
+ return -1 on match failure, -2 on error. */
static Idx
proceed_next_node (const re_match_context_t *mctx, Idx nregs, regmatch_t *regs,
+ regmatch_t *prevregs,
Idx *pidx, Idx node, re_node_set *eps_via_nodes,
struct re_fail_stack_t *fs)
{
const re_dfa_t *const dfa = mctx->dfa;
- Idx i;
- bool ok;
if (IS_EPSILON_NODE (dfa->nodes[node].type))
{
re_node_set *cur_nodes = &mctx->state_log[*pidx]->nodes;
re_node_set *edests = &dfa->edests[node];
- Idx dest_node;
- ok = re_node_set_insert (eps_via_nodes, node);
- if (__glibc_unlikely (! ok))
- return -2;
- /* Pick up a valid destination, or return -1 if none
- is found. */
- for (dest_node = -1, i = 0; i < edests->nelem; ++i)
+
+ if (! re_node_set_contains (eps_via_nodes, node))
+ {
+ bool ok = re_node_set_insert (eps_via_nodes, node);
+ if (__glibc_unlikely (! ok))
+ return -2;
+ }
+
+ /* Pick a valid destination, or return -1 if none is found. */
+ Idx dest_node = -1;
+ for (Idx i = 0; i < edests->nelem; i++)
{
Idx candidate = edests->elems[i];
if (!re_node_set_contains (cur_nodes, candidate))
@@ -1244,7 +1248,7 @@ proceed_next_node (const re_match_context_t *mctx, Idx nregs, regmatch_t *regs,
/* Otherwise, push the second epsilon-transition on the fail stack. */
else if (fs != NULL
&& push_fail_stack (fs, *pidx, candidate, nregs, regs,
- eps_via_nodes))
+ prevregs, eps_via_nodes))
return -2;
/* We know we are going to exit. */
@@ -1288,7 +1292,7 @@ proceed_next_node (const re_match_context_t *mctx, Idx nregs, regmatch_t *regs,
if (naccepted == 0)
{
Idx dest_node;
- ok = re_node_set_insert (eps_via_nodes, node);
+ bool ok = re_node_set_insert (eps_via_nodes, node);
if (__glibc_unlikely (! ok))
return -2;
dest_node = dfa->edests[node].elems[0];
@@ -1317,7 +1321,8 @@ proceed_next_node (const re_match_context_t *mctx, Idx nregs, regmatch_t *regs,
static reg_errcode_t
__attribute_warn_unused_result__
push_fail_stack (struct re_fail_stack_t *fs, Idx str_idx, Idx dest_node,
- Idx nregs, regmatch_t *regs, re_node_set *eps_via_nodes)
+ Idx nregs, regmatch_t *regs, regmatch_t *prevregs,
+ re_node_set *eps_via_nodes)
{
reg_errcode_t err;
Idx num = fs->num++;
@@ -1333,25 +1338,30 @@ push_fail_stack (struct re_fail_stack_t *fs, Idx str_idx, Idx dest_node,
}
fs->stack[num].idx = str_idx;
fs->stack[num].node = dest_node;
- fs->stack[num].regs = re_malloc (regmatch_t, nregs);
+ fs->stack[num].regs = re_malloc (regmatch_t, 2 * nregs);
if (fs->stack[num].regs == NULL)
return REG_ESPACE;
memcpy (fs->stack[num].regs, regs, sizeof (regmatch_t) * nregs);
+ memcpy (fs->stack[num].regs + nregs, prevregs, sizeof (regmatch_t) * nregs);
err = re_node_set_init_copy (&fs->stack[num].eps_via_nodes, eps_via_nodes);
return err;
}
static Idx
pop_fail_stack (struct re_fail_stack_t *fs, Idx *pidx, Idx nregs,
- regmatch_t *regs, re_node_set *eps_via_nodes)
+ regmatch_t *regs, regmatch_t *prevregs,
+ re_node_set *eps_via_nodes)
{
+ if (fs == NULL || fs->num == 0)
+ return -1;
Idx num = --fs->num;
- DEBUG_ASSERT (num >= 0);
*pidx = fs->stack[num].idx;
memcpy (regs, fs->stack[num].regs, sizeof (regmatch_t) * nregs);
+ memcpy (prevregs, fs->stack[num].regs + nregs, sizeof (regmatch_t) * nregs);
re_node_set_free (eps_via_nodes);
re_free (fs->stack[num].regs);
*eps_via_nodes = fs->stack[num].eps_via_nodes;
+ DEBUG_ASSERT (0 <= fs->stack[num].node);
return fs->stack[num].node;
}
@@ -1407,33 +1417,32 @@ set_regs (const regex_t *preg, const re_match_context_t *mctx, size_t nmatch,
{
update_regs (dfa, pmatch, prev_idx_match, cur_node, idx, nmatch);
- if (idx == pmatch[0].rm_eo && cur_node == mctx->last_node)
+ if ((idx == pmatch[0].rm_eo && cur_node == mctx->last_node)
+ || (fs && re_node_set_contains (&eps_via_nodes, cur_node)))
{
Idx reg_idx;
+ cur_node = -1;
if (fs)
{
for (reg_idx = 0; reg_idx < nmatch; ++reg_idx)
if (pmatch[reg_idx].rm_so > -1 && pmatch[reg_idx].rm_eo == -1)
- break;
- if (reg_idx == nmatch)
- {
- re_node_set_free (&eps_via_nodes);
- regmatch_list_free (&prev_match);
- return free_fail_stack_return (fs);
- }
- cur_node = pop_fail_stack (fs, &idx, nmatch, pmatch,
- &eps_via_nodes);
+ {
+ cur_node = pop_fail_stack (fs, &idx, nmatch, pmatch,
+ prev_idx_match, &eps_via_nodes);
+ break;
+ }
}
- else
+ if (cur_node < 0)
{
re_node_set_free (&eps_via_nodes);
regmatch_list_free (&prev_match);
- return REG_NOERROR;
+ return free_fail_stack_return (fs);
}
}
/* Proceed to next node. */
- cur_node = proceed_next_node (mctx, nmatch, pmatch, &idx, cur_node,
+ cur_node = proceed_next_node (mctx, nmatch, pmatch, prev_idx_match,
+ &idx, cur_node,
&eps_via_nodes, fs);
if (__glibc_unlikely (cur_node < 0))
@@ -1445,13 +1454,13 @@ set_regs (const regex_t *preg, const re_match_context_t *mctx, size_t nmatch,
free_fail_stack_return (fs);
return REG_ESPACE;
}
- if (fs)
- cur_node = pop_fail_stack (fs, &idx, nmatch, pmatch,
- &eps_via_nodes);
- else
+ cur_node = pop_fail_stack (fs, &idx, nmatch, pmatch,
+ prev_idx_match, &eps_via_nodes);
+ if (cur_node < 0)
{
re_node_set_free (&eps_via_nodes);
regmatch_list_free (&prev_match);
+ free_fail_stack_return (fs);
return REG_NOMATCH;
}
}
@@ -1495,10 +1504,10 @@ update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
}
else if (type == OP_CLOSE_SUBEXP)
{
+ /* We are at the last node of this sub expression. */
Idx reg_num = dfa->nodes[cur_node].opr.idx + 1;
if (reg_num < nmatch)
{
- /* We are at the last node of this sub expression. */
if (pmatch[reg_num].rm_so < cur_idx)
{
pmatch[reg_num].rm_eo = cur_idx;
@@ -2195,6 +2204,7 @@ sift_states_iter_mb (const re_match_context_t *mctx, re_sift_context_t *sctx,
/* Return the next state to which the current state STATE will transit by
accepting the current input byte, and update STATE_LOG if necessary.
+ Return NULL on failure.
If STATE can accept a multibyte char/collating element/back reference
update the destination of STATE_LOG. */
@@ -2395,7 +2405,7 @@ check_subexp_matching_top (re_match_context_t *mctx, re_node_set *cur_nodes,
#if 0
/* Return the next state to which the current state STATE will transit by
- accepting the current input byte. */
+ accepting the current input byte. Return NULL on failure. */
static re_dfastate_t *
transit_state_sb (reg_errcode_t *err, re_match_context_t *mctx,
@@ -2817,7 +2827,8 @@ find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
/* Check whether the node TOP_NODE at TOP_STR can arrive to the node
LAST_NODE at LAST_STR. We record the path onto PATH since it will be
heavily reused.
- Return REG_NOERROR if it can arrive, or REG_NOMATCH otherwise. */
+ Return REG_NOERROR if it can arrive, REG_NOMATCH if it cannot,
+ REG_ESPACE if memory is exhausted. */
static reg_errcode_t
__attribute_warn_unused_result__
@@ -3433,7 +3444,8 @@ build_trtable (const re_dfa_t *dfa, re_dfastate_t *state)
/* Group all nodes belonging to STATE into several destinations.
Then for all destinations, set the nodes belonging to the destination
to DESTS_NODE[i] and set the characters accepted by the destination
- to DEST_CH[i]. This function return the number of destinations. */
+ to DEST_CH[i]. Return the number of destinations if successful,
+ -1 on internal error. */
static Idx
group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
@@ -4211,7 +4223,8 @@ match_ctx_add_subtop (re_match_context_t *mctx, Idx node, Idx str_idx)
}
/* Register the node NODE, whose type is OP_CLOSE_SUBEXP, and which matches
- at STR_IDX, whose corresponding OP_OPEN_SUBEXP is SUB_TOP. */
+ at STR_IDX, whose corresponding OP_OPEN_SUBEXP is SUB_TOP.
+ Return the new entry if successful, NULL if memory is exhausted. */
static re_sub_match_last_t *
match_ctx_add_sublast (re_sub_match_top_t *subtop, Idx node, Idx str_idx)

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commit fa5044f1e38f4f6515253449b6ca77fd14f53b8e
Author: Paul Eggert <eggert@cs.ucla.edu>
Date: Wed Nov 24 14:16:09 2021 -0800
regex: fix buffer read overrun in search [BZ#28470]
Problem reported by Benno Schulenberg in:
https://lists.gnu.org/r/bug-gnulib/2021-10/msg00035.html
* posix/regexec.c (re_search_internal): Use better bounds check.
(cherry picked from commit c52ef24829f95a819965214eeae28e3289a91a61)
diff --git a/posix/regexec.c b/posix/regexec.c
index 83e9aaf8cad956a2..6aeba3c0b4da23cc 100644
--- a/posix/regexec.c
+++ b/posix/regexec.c
@@ -758,10 +758,9 @@ re_search_internal (const regex_t *preg, const char *string, Idx length,
offset = match_first - mctx.input.raw_mbs_idx;
}
- /* If MATCH_FIRST is out of the buffer, leave it as '\0'.
- Note that MATCH_FIRST must not be smaller than 0. */
- ch = (match_first >= length
- ? 0 : re_string_byte_at (&mctx.input, offset));
+ /* Use buffer byte if OFFSET is in buffer, otherwise '\0'. */
+ ch = (offset < mctx.input.valid_len
+ ? re_string_byte_at (&mctx.input, offset) : 0);
if (fastmap[ch])
break;
match_first += incr;

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commit 06afa5e09fbd984ed45ae6fc6ca050d544aba780
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Wed Aug 25 11:17:06 2021 -0300
io: Fix ftw internal realloc buffer (BZ #28126)
The 106ff08526d3ca did not take in consideration the buffer might be
reallocated if the total path is larger than PATH_MAX. The realloc
uses 'dirbuf', where 'dirstreams' is the allocated buffer.
Checked on x86_64-linux-gnu.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
(cherry picked from commit 1836bb2ebf62bd9a3588f2ed2d851c8ae810097a)
diff --git a/io/Makefile b/io/Makefile
index 01968b81042e01e4..5284a1282dd07e3d 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -79,6 +79,7 @@ tests := test-utime test-stat test-stat2 test-lfs tst-getcwd \
tst-futimens \
tst-utimensat \
tst-closefrom \
+ tst-ftw-bz28126
tests-time64 := \
tst-fcntl-time64 \
diff --git a/io/ftw.c b/io/ftw.c
index ce1c6a14a306152a..cf08d9f101657df0 100644
--- a/io/ftw.c
+++ b/io/ftw.c
@@ -204,6 +204,20 @@ struct ftw_data
void *known_objects;
};
+static bool
+ftw_allocate (struct ftw_data *data, size_t newsize)
+{
+ void *newp = realloc (data->dirstreams, data->maxdir
+ * sizeof (struct dir_data *)
+ + newsize);
+ if (newp == NULL)
+ return false;
+ data->dirstreams = newp;
+ data->dirbufsize = newsize;
+ data->dirbuf = (char *) data->dirstreams
+ + data->maxdir * sizeof (struct dir_data *);
+ return true;
+}
/* Internally we use the FTW_* constants used for `nftw'. When invoked
as `ftw', map each flag to the subset of values used by `ftw'. */
@@ -389,17 +403,9 @@ process_entry (struct ftw_data *data, struct dir_data *dir, const char *name,
return 0;
new_buflen = data->ftw.base + namlen + 2;
- if (data->dirbufsize < new_buflen)
- {
- /* Enlarge the buffer. */
- char *newp;
-
- data->dirbufsize = 2 * new_buflen;
- newp = (char *) realloc (data->dirbuf, data->dirbufsize);
- if (newp == NULL)
- return -1;
- data->dirbuf = newp;
- }
+ if (data->dirbufsize < new_buflen
+ && !ftw_allocate (data, 2 * new_buflen))
+ return -1;
*((char *) __mempcpy (data->dirbuf + data->ftw.base, name, namlen)) = '\0';
@@ -629,7 +635,7 @@ __attribute ((noinline))
ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
int flags)
{
- struct ftw_data data;
+ struct ftw_data data = { .dirstreams = NULL };
struct STRUCT_STAT st;
int result = 0;
int save_err;
@@ -647,16 +653,9 @@ ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
data.maxdir = descriptors < 1 ? 1 : descriptors;
data.actdir = 0;
/* PATH_MAX is always defined when we get here. */
- data.dirbufsize = MAX (2 * strlen (dir), PATH_MAX);
- data.dirstreams = malloc (data.maxdir * sizeof (struct dir_data *)
- + data.dirbufsize);
- if (data.dirstreams == NULL)
+ if (!ftw_allocate (&data, MAX (2 * strlen (dir), PATH_MAX)))
return -1;
-
memset (data.dirstreams, '\0', data.maxdir * sizeof (struct dir_data *));
-
- data.dirbuf = (char *) data.dirstreams
- + data.maxdir * sizeof (struct dir_data *);
cp = __stpcpy (data.dirbuf, dir);
/* Strip trailing slashes. */
while (cp > data.dirbuf + 1 && cp[-1] == '/')
diff --git a/io/tst-ftw-bz28126.c b/io/tst-ftw-bz28126.c
new file mode 100644
index 0000000000000000..94044ab9d1d0275b
--- /dev/null
+++ b/io/tst-ftw-bz28126.c
@@ -0,0 +1,97 @@
+/* Check if internal buffer reallocation work for large paths (BZ #28126)
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <ftw.h>
+#include <limits.h>
+#include <string.h>
+#include <stdlib.h>
+#include <support/check.h>
+#include <support/support.h>
+#include <support/temp_file.h>
+#include <support/xunistd.h>
+#include <stdio.h>
+
+static int
+my_func (const char *file, const struct stat *sb, int flag)
+{
+ return 0;
+}
+
+static const char folder[NAME_MAX] = { [0 ... 253] = 'a', [254] = '\0' };
+
+#define NSUBFOLDERS 16
+static int nsubfolders;
+
+static void
+do_cleanup (void)
+{
+ xchdir ("..");
+ for (int i = 0; i < nsubfolders; i++)
+ {
+ remove (folder);
+ xchdir ("..");
+ }
+ remove (folder);
+}
+#define CLEANUP_HANDLER do_cleanup
+
+static void
+check_mkdir (const char *path)
+{
+ int r = mkdir (path, 0777);
+ /* Some filesystem such as overlayfs does not support larger path required
+ to trigger the internal buffer reallocation. */
+ if (r != 0)
+ {
+ if (errno == ENAMETOOLONG)
+ FAIL_UNSUPPORTED ("the filesystem does not support the required"
+ "large path");
+ else
+ FAIL_EXIT1 ("mkdir (\"%s\", 0%o): %m", folder, 0777);
+ }
+}
+
+static int
+do_test (void)
+{
+ char *tempdir = support_create_temp_directory ("tst-bz28126");
+
+ /* Create path with various subfolders to force an internal buffer
+ reallocation within ntfw. */
+ char *path = xasprintf ("%s/%s", tempdir, folder);
+ check_mkdir (path);
+ xchdir (path);
+ free (path);
+ for (int i = 0; i < NSUBFOLDERS - 1; i++)
+ {
+ check_mkdir (folder);
+ xchdir (folder);
+ nsubfolders++;
+ }
+
+ TEST_COMPARE (ftw (tempdir, my_func, 20), 0);
+
+ free (tempdir);
+
+ do_cleanup ();
+
+ return 0;
+}
+
+#include <support/test-driver.c>

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commit deea6ab1bcb2696be514e579f3263c234ecc1683
Author: Martin Sebor <msebor@redhat.com>
Date: Tue Jan 25 17:39:02 2022 -0700
io: Fix use-after-free in ftw [BZ #26779]
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit ee52ab25ba875f458981fce22c54e3c04c7a17d3)
diff --git a/io/ftw.c b/io/ftw.c
index cf08d9f101657df0..91a4e8e6de151ca1 100644
--- a/io/ftw.c
+++ b/io/ftw.c
@@ -324,8 +324,9 @@ open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)
buf[actsize++] = '\0';
/* Shrink the buffer to what we actually need. */
- data->dirstreams[data->actdir]->content = realloc (buf, actsize);
- if (data->dirstreams[data->actdir]->content == NULL)
+ void *content = realloc (buf, actsize);
+ data->dirstreams[data->actdir]->content = content;
+ if (content == NULL)
{
int save_err = errno;
free (buf);

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commit 691f70b84a1284f35c8cf9fbf3ef3b1cec41c234
Author: Vladislav Khmelevsky <och95@yandex.ru>
Date: Thu Nov 17 12:47:29 2022 +0400
elf: Fix rtld-audit trampoline for aarch64
This patch fixes two problems with audit:
1. The DL_OFFSET_RV_VPCS offset was mixed up with DL_OFFSET_RG_VPCS,
resulting in x2 register value nulling in RG structure.
2. We need to preserve the x8 register before function call, but
don't have to save it's new value and restore it before return.
Anyway the final restore was using OFFSET_RV instead of OFFSET_RG value
which is wrong (althoug doesn't affect anything).
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
(cherry picked from commit eb4181e9f4a512de37dad4ba623c921671584dea)
diff --git a/sysdeps/aarch64/dl-trampoline.S b/sysdeps/aarch64/dl-trampoline.S
index 457570e7df5148c0..b84c53d1a544c1b1 100644
--- a/sysdeps/aarch64/dl-trampoline.S
+++ b/sysdeps/aarch64/dl-trampoline.S
@@ -298,12 +298,11 @@ _dl_runtime_profile:
stp x2, x3, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*1]
stp x4, x5, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*2]
stp x6, x7, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*3]
- str x8, [x29, #OFFSET_RG + DL_OFFSET_RG_X0 + 16*4]
stp q0, q1, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*0]
stp q2, q3, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*1]
stp q4, q5, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*2]
stp q6, q7, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*3]
- str xzr, [X29, #OFFSET_RV + DL_OFFSET_RG_VPCS]
+ str xzr, [X29, #OFFSET_RV + DL_OFFSET_RV_VPCS]
/* Setup call to pltexit */
ldp x0, x1, [x29, #OFFSET_SAVED_CALL_X0]
@@ -315,7 +314,6 @@ _dl_runtime_profile:
ldp x2, x3, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*1]
ldp x4, x5, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*2]
ldp x6, x7, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*3]
- ldr x8, [x29, #OFFSET_RV + DL_OFFSET_RV_X0 + 16*4]
ldp q0, q1, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*0]
ldp q2, q3, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*1]
ldp q4, q5, [x29, #OFFSET_RV + DL_OFFSET_RV_V0 + 32*2]

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commit e3255e7d2188d1731aad83ad0dc147513560aa1e
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date: Tue Sep 20 17:58:04 2022 -0700
x86: Fix wcsnlen-avx2 page cross length comparison [BZ #29591]
Previous implementation was adjusting length (rsi) to match
bytes (eax), but since there is no bound to length this can cause
overflow.
Fix is to just convert the byte-count (eax) to length by dividing by
sizeof (wchar_t) before the comparison.
Full check passes on x86-64 and build succeeds w/ and w/o multiarch.
(cherry picked from commit b0969fa53a28b4ab2159806bf6c99a98999502ee)
diff --git a/string/test-strnlen.c b/string/test-strnlen.c
index bb5d9b5f04fa6586..eac84cd17526d5d9 100644
--- a/string/test-strnlen.c
+++ b/string/test-strnlen.c
@@ -75,7 +75,7 @@ do_test (size_t align, size_t len, size_t maxlen, int max_char)
{
size_t i;
- align &= 63;
+ align &= (getpagesize () / sizeof (CHAR) - 1);
if ((align + len) * sizeof (CHAR) >= page_size)
return;
@@ -92,36 +92,50 @@ do_test (size_t align, size_t len, size_t maxlen, int max_char)
static void
do_overflow_tests (void)
{
- size_t i, j, len;
+ size_t i, j, al_idx, repeats, len;
const size_t one = 1;
uintptr_t buf_addr = (uintptr_t) buf1;
+ const size_t alignments[] = { 0, 1, 7, 9, 31, 33, 63, 65, 95, 97, 127, 129 };
- for (i = 0; i < 750; ++i)
+ for (al_idx = 0; al_idx < sizeof (alignments) / sizeof (alignments[0]);
+ al_idx++)
{
- do_test (0, i, SIZE_MAX - i, BIG_CHAR);
- do_test (0, i, i - buf_addr, BIG_CHAR);
- do_test (0, i, -buf_addr - i, BIG_CHAR);
- do_test (0, i, SIZE_MAX - buf_addr - i, BIG_CHAR);
- do_test (0, i, SIZE_MAX - buf_addr + i, BIG_CHAR);
-
- len = 0;
- for (j = 8 * sizeof(size_t) - 1; j ; --j)
- {
- len |= one << j;
- do_test (0, i, len - i, BIG_CHAR);
- do_test (0, i, len + i, BIG_CHAR);
- do_test (0, i, len - buf_addr - i, BIG_CHAR);
- do_test (0, i, len - buf_addr + i, BIG_CHAR);
-
- do_test (0, i, ~len - i, BIG_CHAR);
- do_test (0, i, ~len + i, BIG_CHAR);
- do_test (0, i, ~len - buf_addr - i, BIG_CHAR);
- do_test (0, i, ~len - buf_addr + i, BIG_CHAR);
-
- do_test (0, i, -buf_addr, BIG_CHAR);
- do_test (0, i, j - buf_addr, BIG_CHAR);
- do_test (0, i, -buf_addr - j, BIG_CHAR);
- }
+ for (repeats = 0; repeats < 2; ++repeats)
+ {
+ size_t align = repeats ? (getpagesize () - alignments[al_idx])
+ : alignments[al_idx];
+ align /= sizeof (CHAR);
+ for (i = 0; i < 750; ++i)
+ {
+ do_test (align, i, SIZE_MAX, BIG_CHAR);
+
+ do_test (align, i, SIZE_MAX - i, BIG_CHAR);
+ do_test (align, i, i - buf_addr, BIG_CHAR);
+ do_test (align, i, -buf_addr - i, BIG_CHAR);
+ do_test (align, i, SIZE_MAX - buf_addr - i, BIG_CHAR);
+ do_test (align, i, SIZE_MAX - buf_addr + i, BIG_CHAR);
+
+ len = 0;
+ for (j = 8 * sizeof (size_t) - 1; j; --j)
+ {
+ len |= one << j;
+ do_test (align, i, len, BIG_CHAR);
+ do_test (align, i, len - i, BIG_CHAR);
+ do_test (align, i, len + i, BIG_CHAR);
+ do_test (align, i, len - buf_addr - i, BIG_CHAR);
+ do_test (align, i, len - buf_addr + i, BIG_CHAR);
+
+ do_test (align, i, ~len - i, BIG_CHAR);
+ do_test (align, i, ~len + i, BIG_CHAR);
+ do_test (align, i, ~len - buf_addr - i, BIG_CHAR);
+ do_test (align, i, ~len - buf_addr + i, BIG_CHAR);
+
+ do_test (align, i, -buf_addr, BIG_CHAR);
+ do_test (align, i, j - buf_addr, BIG_CHAR);
+ do_test (align, i, -buf_addr - j, BIG_CHAR);
+ }
+ }
+ }
}
}
diff --git a/sysdeps/x86_64/multiarch/strlen-avx2.S b/sysdeps/x86_64/multiarch/strlen-avx2.S
index b282a75613bf52ab..4d7d68396bcd4049 100644
--- a/sysdeps/x86_64/multiarch/strlen-avx2.S
+++ b/sysdeps/x86_64/multiarch/strlen-avx2.S
@@ -542,14 +542,11 @@ L(return_vzeroupper):
L(cross_page_less_vec):
tzcntl %eax, %eax
# ifdef USE_AS_WCSLEN
- /* NB: Multiply length by 4 to get byte count. */
- sall $2, %esi
+ /* NB: Divide by 4 to convert from byte-count to length. */
+ shrl $2, %eax
# endif
cmpq %rax, %rsi
cmovb %esi, %eax
-# ifdef USE_AS_WCSLEN
- shrl $2, %eax
-# endif
VZEROUPPER_RETURN
# endif

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commit 309c4708aca762f57263a66e5bea926fdbfd82eb
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Fri Mar 25 11:16:49 2022 -0300
elf: Fix wrong fscanf usage on tst-pldd
To take in consideration the extra '\0'.
Checked on x86_64-linux-gnu.
(cherry picked from commit b2cd93fce666fdc8c9a5c64af2741a8a6940ac99)
diff --git a/elf/tst-pldd.c b/elf/tst-pldd.c
index 210ca4d24b8338ab..72b7a99b369a105d 100644
--- a/elf/tst-pldd.c
+++ b/elf/tst-pldd.c
@@ -113,7 +113,8 @@ do_test (void)
TEST_VERIFY (out != NULL);
/* First line is in the form of <pid>: <full path of executable> */
- TEST_COMPARE (fscanf (out, "%u: " STRINPUT (512), &pid, buffer), 2);
+ TEST_COMPARE (fscanf (out, "%u: " STRINPUT (sizeof (buffer) - 1), &pid,
+ buffer), 2);
TEST_COMPARE (pid, *target_pid_ptr);
TEST_COMPARE (strcmp (basename (buffer), "tst-pldd"), 0);

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commit 42b9d7def8fd7d26f1926cbc801923aa2c8a386a
Author: DJ Delorie <dj@redhat.com>
Date: Mon Mar 28 23:53:33 2022 -0400
Allow for unpriviledged nested containers
If the build itself is run in a container, we may not be able to
fully set up a nested container for test-container testing.
Notably is the mounting of /proc, since it's critical that it
be mounted from within the same PID namespace as its users, and
thus cannot be bind mounted from outside the container like other
mounts.
This patch defaults to using the parent's PID namespace instead of
creating a new one, as this is more likely to be allowed.
If the test needs an isolated PID namespace, it should add the "pidns"
command to its init script.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit 2fe64148a81f0d78050c302f34a6853d21f7cae4)
diff --git a/elf/tst-pldd.c b/elf/tst-pldd.c
index 72b7a99b369a105d..6e4174cbf95b15c0 100644
--- a/elf/tst-pldd.c
+++ b/elf/tst-pldd.c
@@ -85,6 +85,8 @@ in_str_list (const char *libname, const char *const strlist[])
static int
do_test (void)
{
+ support_need_proc ("needs /proc/sys/kernel/yama/ptrace_scope and /proc/$child");
+
/* Check if our subprocess can be debugged with ptrace. */
{
int ptrace_scope = support_ptrace_scope ();
diff --git a/nptl/tst-pthread-getattr.c b/nptl/tst-pthread-getattr.c
index 5f60cf9722b77a1a..6128402b2673c010 100644
--- a/nptl/tst-pthread-getattr.c
+++ b/nptl/tst-pthread-getattr.c
@@ -28,6 +28,8 @@
#include <unistd.h>
#include <inttypes.h>
+#include <support/support.h>
+
/* There is an obscure bug in the kernel due to which RLIMIT_STACK is sometimes
returned as unlimited when it is not, which may cause this test to fail.
There is also the other case where RLIMIT_STACK is intentionally set as
@@ -153,6 +155,8 @@ check_stack_top (void)
static int
do_test (void)
{
+ support_need_proc ("Reads /proc/self/maps to get stack size.");
+
pagesize = sysconf (_SC_PAGESIZE);
return check_stack_top ();
}
diff --git a/nss/tst-reload2.c b/nss/tst-reload2.c
index 5ecb032e9fcd6868..a494145dd679099d 100644
--- a/nss/tst-reload2.c
+++ b/nss/tst-reload2.c
@@ -95,6 +95,8 @@ do_test (void)
char buf1[PATH_MAX];
char buf2[PATH_MAX];
+ support_need_proc ("Our xmkdirp fails if we can't map our uid, which requires /proc.");
+
sprintf (buf1, "/subdir%s", support_slibdir_prefix);
xmkdirp (buf1, 0777);
diff --git a/support/Makefile b/support/Makefile
index 6a5fc9faf2ca2e2d..0aa9d41c5a890087 100644
--- a/support/Makefile
+++ b/support/Makefile
@@ -63,6 +63,7 @@ libsupport-routines = \
support_format_hostent \
support_format_netent \
support_isolate_in_subprocess \
+ support_need_proc \
support_path_support_time64 \
support_process_state \
support_ptrace \
diff --git a/support/support.h b/support/support.h
index ecfc9a336d272a30..b69f588e2edce6be 100644
--- a/support/support.h
+++ b/support/support.h
@@ -90,6 +90,11 @@ char *support_quote_string (const char *);
regular file open for writing, and initially empty. */
int support_descriptor_supports_holes (int fd);
+/* Predicates that a test requires a working /proc filesystem. This
+ call will exit with UNSUPPORTED if /proc is not available, printing
+ WHY_MSG as part of the diagnostic. */
+void support_need_proc (const char *why_msg);
+
/* Error-checking wrapper functions which terminate the process on
error. */
diff --git a/support/support_need_proc.c b/support/support_need_proc.c
new file mode 100644
index 0000000000000000..9b4eab7539b2d6c3
--- /dev/null
+++ b/support/support_need_proc.c
@@ -0,0 +1,35 @@
+/* Indicate that a test requires a working /proc.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <unistd.h>
+#include <support/check.h>
+#include <support/support.h>
+
+/* We test for /proc/self/maps since that's one of the files that one
+ of our tests actually uses, but the general idea is if Linux's
+ /proc/ (procfs) filesystem is mounted. If not, the process exits
+ with an UNSUPPORTED result code. */
+
+void
+support_need_proc (const char *why_msg)
+{
+#ifdef __linux__
+ if (access ("/proc/self/maps", R_OK))
+ FAIL_UNSUPPORTED ("/proc is not available, %s", why_msg);
+#endif
+}
diff --git a/support/test-container.c b/support/test-container.c
index 94498d39019a4776..7310335f7566b41e 100644
--- a/support/test-container.c
+++ b/support/test-container.c
@@ -97,6 +97,7 @@ int verbose = 0;
* mytest.root/mytest.script has a list of "commands" to run:
syntax:
# comment
+ pidns <comment>
su
mv FILE FILE
cp FILE FILE
@@ -122,6 +123,8 @@ int verbose = 0;
details:
- '#': A comment.
+ - 'pidns': Require a separate PID namespace, prints comment if it can't
+ (default is a shared pid namespace)
- 'su': Enables running test as root in the container.
- 'mv': A minimal move files command.
- 'cp': A minimal copy files command.
@@ -148,7 +151,7 @@ int verbose = 0;
* Simple, easy to review code (i.e. prefer simple naive code over
complex efficient code)
- * The current implementation ist parallel-make-safe, but only in
+ * The current implementation is parallel-make-safe, but only in
that it uses a lock to prevent parallel access to the testroot. */
@@ -227,11 +230,37 @@ concat (const char *str, ...)
return bufs[n];
}
+/* Like the above, but put spaces between words. Caller frees. */
+static char *
+concat_words (char **words, int num_words)
+{
+ int len = 0;
+ int i;
+ char *rv, *p;
+
+ for (i = 0; i < num_words; i ++)
+ {
+ len += strlen (words[i]);
+ len ++;
+ }
+
+ p = rv = (char *) xmalloc (len);
+
+ for (i = 0; i < num_words; i ++)
+ {
+ if (i > 0)
+ p = stpcpy (p, " ");
+ p = stpcpy (p, words[i]);
+ }
+
+ return rv;
+}
+
/* Try to mount SRC onto DEST. */
static void
trymount (const char *src, const char *dest)
{
- if (mount (src, dest, "", MS_BIND, NULL) < 0)
+ if (mount (src, dest, "", MS_BIND | MS_REC, NULL) < 0)
FAIL_EXIT1 ("can't mount %s onto %s\n", src, dest);
}
@@ -726,6 +755,9 @@ main (int argc, char **argv)
gid_t original_gid;
/* If set, the test runs as root instead of the user running the testsuite. */
int be_su = 0;
+ int require_pidns = 0;
+ const char *pidns_comment = NULL;
+ int do_proc_mounts = 0;
int UMAP;
int GMAP;
/* Used for "%lld %lld 1" so need not be large. */
@@ -1011,6 +1043,12 @@ main (int argc, char **argv)
{
be_su = 1;
}
+ else if (nt >= 1 && strcmp (the_words[0], "pidns") == 0)
+ {
+ require_pidns = 1;
+ if (nt > 1)
+ pidns_comment = concat_words (the_words + 1, nt - 1);
+ }
else if (nt == 3 && strcmp (the_words[0], "mkdirp") == 0)
{
long int m;
@@ -1068,7 +1106,8 @@ main (int argc, char **argv)
#ifdef CLONE_NEWNS
/* The unshare here gives us our own spaces and capabilities. */
- if (unshare (CLONE_NEWUSER | CLONE_NEWPID | CLONE_NEWNS) < 0)
+ if (unshare (CLONE_NEWUSER | CLONE_NEWNS
+ | (require_pidns ? CLONE_NEWPID : 0)) < 0)
{
/* Older kernels may not support all the options, or security
policy may block this call. */
@@ -1079,6 +1118,11 @@ main (int argc, char **argv)
check_for_unshare_hints ();
FAIL_UNSUPPORTED ("unable to unshare user/fs: %s", strerror (saved_errno));
}
+ /* We're about to exit anyway, it's "safe" to call unshare again
+ just to see if the CLONE_NEWPID caused the error. */
+ else if (require_pidns && unshare (CLONE_NEWUSER | CLONE_NEWNS) >= 0)
+ FAIL_EXIT1 ("unable to unshare pid ns: %s : %s", strerror (errno),
+ pidns_comment ? pidns_comment : "required by test");
else
FAIL_EXIT1 ("unable to unshare user/fs: %s", strerror (errno));
}
@@ -1094,6 +1138,15 @@ main (int argc, char **argv)
trymount (support_srcdir_root, new_srcdir_path);
trymount (support_objdir_root, new_objdir_path);
+ /* It may not be possible to mount /proc directly. */
+ if (! require_pidns)
+ {
+ char *new_proc = concat (new_root_path, "/proc", NULL);
+ xmkdirp (new_proc, 0755);
+ trymount ("/proc", new_proc);
+ do_proc_mounts = 1;
+ }
+
xmkdirp (concat (new_root_path, "/dev", NULL), 0755);
devmount (new_root_path, "null");
devmount (new_root_path, "zero");
@@ -1163,42 +1216,60 @@ main (int argc, char **argv)
maybe_xmkdir ("/tmp", 0755);
- /* Now that we're pid 1 (effectively "root") we can mount /proc */
- maybe_xmkdir ("/proc", 0777);
- if (mount ("proc", "/proc", "proc", 0, NULL) < 0)
- FAIL_EXIT1 ("Unable to mount /proc: ");
-
- /* We map our original UID to the same UID in the container so we
- can own our own files normally. */
- UMAP = open ("/proc/self/uid_map", O_WRONLY);
- if (UMAP < 0)
- FAIL_EXIT1 ("can't write to /proc/self/uid_map\n");
-
- sprintf (tmp, "%lld %lld 1\n",
- (long long) (be_su ? 0 : original_uid), (long long) original_uid);
- write (UMAP, tmp, strlen (tmp));
- xclose (UMAP);
-
- /* We must disable setgroups () before we can map our groups, else we
- get EPERM. */
- GMAP = open ("/proc/self/setgroups", O_WRONLY);
- if (GMAP >= 0)
+ if (require_pidns)
{
- /* We support kernels old enough to not have this. */
- write (GMAP, "deny\n", 5);
- xclose (GMAP);
+ /* Now that we're pid 1 (effectively "root") we can mount /proc */
+ maybe_xmkdir ("/proc", 0777);
+ if (mount ("proc", "/proc", "proc", 0, NULL) != 0)
+ {
+ /* This happens if we're trying to create a nested container,
+ like if the build is running under podman, and we lack
+ priviledges.
+
+ Ideally we would WARN here, but that would just add noise to
+ *every* test-container test, and the ones that care should
+ have their own relevent diagnostics.
+
+ FAIL_EXIT1 ("Unable to mount /proc: "); */
+ }
+ else
+ do_proc_mounts = 1;
}
- /* We map our original GID to the same GID in the container so we
- can own our own files normally. */
- GMAP = open ("/proc/self/gid_map", O_WRONLY);
- if (GMAP < 0)
- FAIL_EXIT1 ("can't write to /proc/self/gid_map\n");
+ if (do_proc_mounts)
+ {
+ /* We map our original UID to the same UID in the container so we
+ can own our own files normally. */
+ UMAP = open ("/proc/self/uid_map", O_WRONLY);
+ if (UMAP < 0)
+ FAIL_EXIT1 ("can't write to /proc/self/uid_map\n");
+
+ sprintf (tmp, "%lld %lld 1\n",
+ (long long) (be_su ? 0 : original_uid), (long long) original_uid);
+ write (UMAP, tmp, strlen (tmp));
+ xclose (UMAP);
+
+ /* We must disable setgroups () before we can map our groups, else we
+ get EPERM. */
+ GMAP = open ("/proc/self/setgroups", O_WRONLY);
+ if (GMAP >= 0)
+ {
+ /* We support kernels old enough to not have this. */
+ write (GMAP, "deny\n", 5);
+ xclose (GMAP);
+ }
- sprintf (tmp, "%lld %lld 1\n",
- (long long) (be_su ? 0 : original_gid), (long long) original_gid);
- write (GMAP, tmp, strlen (tmp));
- xclose (GMAP);
+ /* We map our original GID to the same GID in the container so we
+ can own our own files normally. */
+ GMAP = open ("/proc/self/gid_map", O_WRONLY);
+ if (GMAP < 0)
+ FAIL_EXIT1 ("can't write to /proc/self/gid_map\n");
+
+ sprintf (tmp, "%lld %lld 1\n",
+ (long long) (be_su ? 0 : original_gid), (long long) original_gid);
+ write (GMAP, tmp, strlen (tmp));
+ xclose (GMAP);
+ }
if (change_cwd)
{

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commit 405b8ae13540e9fd614df614e3361ebf9abd14cf
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Jul 5 12:58:40 2022 -0300
elf: Fix wrong fscanf usage on tst-pldd
The fix done b2cd93fce666fdc8c9a5c64af2741a8a6940ac99 does not really
work since macro strification does not expand the sizeof nor the
arithmetic operation.
Checked on x86_64-linux-gnu.
(cherry picked from commit c353689e49e72f3aafa1a9e68d4f7a4f33a79cbe)
diff --git a/elf/tst-pldd.c b/elf/tst-pldd.c
index 6e4174cbf95b15c0..d3ecb99149d619c6 100644
--- a/elf/tst-pldd.c
+++ b/elf/tst-pldd.c
@@ -108,15 +108,16 @@ do_test (void)
loader and libc. */
{
pid_t pid;
- char buffer[512];
-#define STRINPUT(size) "%" # size "s"
+#define BUFFERLEN 511
+ char buffer[BUFFERLEN + 1];
+#define STRINPUT(size) XSTRINPUT(size)
+#define XSTRINPUT(size) "%" # size "s"
FILE *out = fmemopen (pldd.out.buffer, pldd.out.length, "r");
TEST_VERIFY (out != NULL);
/* First line is in the form of <pid>: <full path of executable> */
- TEST_COMPARE (fscanf (out, "%u: " STRINPUT (sizeof (buffer) - 1), &pid,
- buffer), 2);
+ TEST_COMPARE (fscanf (out, "%u: " STRINPUT (BUFFERLEN), &pid, buffer), 2);
TEST_COMPARE (pid, *target_pid_ptr);
TEST_COMPARE (strcmp (basename (buffer), "tst-pldd"), 0);

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commit a1c12fdf3f9b8665719835ce8330b3b2e2574b37
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Sep 10 13:18:36 2021 +0200
_Static_assert needs two arguments for compatibility with GCC before 9
This macro definition enforces two arguments even with newer compilers
that accept the single-argument form, too.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit c9fef4b7d1d0f2dad192c74f06102752247677a9)
diff --git a/include/sys/cdefs.h b/include/sys/cdefs.h
index 6a76160ed4e4cabb..56adb231aa8f8cbe 100644
--- a/include/sys/cdefs.h
+++ b/include/sys/cdefs.h
@@ -1,5 +1,12 @@
#ifndef _SYS_CDEFS_H
+/* This is outside of _ISOMAC to enforce that _Static_assert always
+ uses the two-argument form. This can be removed once the minimum
+ GCC version used to compile glibc is GCC 9.1. */
+#ifndef __cplusplus
+# define _Static_assert(expr, diagnostic) _Static_assert (expr, diagnostic)
+#endif
+
#include <misc/sys/cdefs.h>
#ifndef _ISOMAC

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commit a4217408a3d6050a7f42ac23adb6ac7218dca85f
Author: Tulio Magno Quites Machado Filho <tuliom@redhat.com>
Date: Fri Nov 11 17:00:15 2022 -0300
Apply asm redirections in syslog.h before first use [BZ #27087]
Similar to d0fa09a770, but for syslog.h when _FORTIFY_SOURCE > 0.
Fixes [BZ #27087] by applying long double-related asm redirections
before using functions in bits/syslog.h.
Tested with build-many-glibcs.py.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
(cherry picked from commit 227df6243a2b5b4d70d11772d12c02eb9cb666ca)
diff --git a/misc/bits/syslog.h b/misc/bits/syslog.h
index 6f3137a98ee593f3..10c9c1151382a51c 100644
--- a/misc/bits/syslog.h
+++ b/misc/bits/syslog.h
@@ -24,6 +24,20 @@
extern void __syslog_chk (int __pri, int __flag, const char *__fmt, ...)
__attribute__ ((__format__ (__printf__, 3, 4)));
+#ifdef __USE_MISC
+extern void __vsyslog_chk (int __pri, int __flag, const char *__fmt,
+ __gnuc_va_list __ap)
+ __attribute__ ((__format__ (__printf__, 3, 0)));
+#endif
+
+#include <bits/floatn.h>
+#if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
+# include <bits/syslog-ldbl.h>
+#endif
+
+/* The following functions must be used only after applying all asm
+ redirections, e.g. long double asm redirections. */
+
#ifdef __va_arg_pack
__fortify_function void
syslog (int __pri, const char *__fmt, ...)
@@ -37,10 +51,6 @@ syslog (int __pri, const char *__fmt, ...)
#ifdef __USE_MISC
-extern void __vsyslog_chk (int __pri, int __flag, const char *__fmt,
- __gnuc_va_list __ap)
- __attribute__ ((__format__ (__printf__, 3, 0)));
-
__fortify_function void
vsyslog (int __pri, const char *__fmt, __gnuc_va_list __ap)
{
diff --git a/misc/sys/syslog.h b/misc/sys/syslog.h
index dc3b0e7ef81de812..e7a98fb9b13ce132 100644
--- a/misc/sys/syslog.h
+++ b/misc/sys/syslog.h
@@ -205,11 +205,11 @@ extern void vsyslog (int __pri, const char *__fmt, __gnuc_va_list __ap)
/* Define some macros helping to catch buffer overflows. */
#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
# include <bits/syslog.h>
-#endif
-
-#include <bits/floatn.h>
-#if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
-# include <bits/syslog-ldbl.h>
+#else
+# include <bits/floatn.h>
+# if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
+# include <bits/syslog-ldbl.h>
+# endif
#endif
__END_DECLS

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commit 42eb735a5d3458a24a44ace9eca87c8b61573d97
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Thu May 20 14:20:18 2021 -0300
Use LFS and 64 bit time for installed programs (BZ #15333)
The installed programs are built with a combination of different
values for MODULE_NAME, as below. To enable both Long File Support
and 64 bt time, -D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64 is added for
nonlibi, nscd, lddlibc4, libresolv, ldconfig, locale_programs,
iconvprogs, libnss_files, libnss_compat, libnss_db, libnss_hesiod,
libutil, libpcprofile, and libSegFault.
nscd/nscd
nscd/nscd.o MODULE_NAME=nscd
nscd/connections.o MODULE_NAME=nscd
nscd/pwdcache.o MODULE_NAME=nscd
nscd/getpwnam_r.o MODULE_NAME=nscd
nscd/getpwuid_r.o MODULE_NAME=nscd
nscd/grpcache.o MODULE_NAME=nscd
nscd/getgrnam_r.o MODULE_NAME=nscd
nscd/getgrgid_r.o MODULE_NAME=nscd
nscd/hstcache.o MODULE_NAME=nscd
nscd/gethstbyad_r.o MODULE_NAME=nscd
nscd/gethstbynm3_r.o MODULE_NAME=nscd
nscd/getsrvbynm_r.o MODULE_NAME=nscd
nscd/getsrvbypt_r.o MODULE_NAME=nscd
nscd/servicescache.o MODULE_NAME=nscd
nscd/dbg_log.o MODULE_NAME=nscd
nscd/nscd_conf.o MODULE_NAME=nscd
nscd/nscd_stat.o MODULE_NAME=nscd
nscd/cache.o MODULE_NAME=nscd
nscd/mem.o MODULE_NAME=nscd
nscd/nscd_setup_thread.o MODULE_NAME=nscd
nscd/xmalloc.o MODULE_NAME=nscd
nscd/xstrdup.o MODULE_NAME=nscd
nscd/aicache.o MODULE_NAME=nscd
nscd/initgrcache.o MODULE_NAME=nscd
nscd/gai.o MODULE_NAME=nscd
nscd/res_hconf.o MODULE_NAME=nscd
nscd/netgroupcache.o MODULE_NAME=nscd
nscd/cachedumper.o MODULE_NAME=nscd
elf/lddlibc4
elf/lddlibc4 MODULE_NAME=lddlibc4
elf/pldd
elf/pldd.o MODULE_NAME=nonlib
elf/xmalloc.o MODULE_NAME=nonlib
elf/sln
elf/sln.o MODULE_NAME=nonlib
elf/static-stubs.o MODULE_NAME=nonlib
elf/sprof MODULE_NAME=nonlib
elf/ldconfig
elf/ldconfig.o MODULE_NAME=ldconfig
elf/cache.o MODULE_NAME=nonlib
elf/readlib.o MODULE_NAME=nonlib
elf/xmalloc.o MODULE_NAME=nonlib
elf/xstrdup.o MODULE_NAME=nonlib
elf/chroot_canon.o MODULE_NAME=nonlib
elf/static-stubs.o MODULE_NAME=nonlib
elf/stringtable.o MODULE_NAME=nonlib
io/pwd
io/pwd.o MODULE_NAME=nonlib
locale/locale
locale/locale.o MODULE_NAME=locale_programs
locale/locale-spec.o MODULE_NAME=locale_programs
locale/charmap-dir.o MODULE_NAME=locale_programs
locale/simple-hash.o MODULE_NAME=locale_programs
locale/xmalloc.o MODULE_NAME=locale_programs
locale/xstrdup.o MODULE_NAME=locale_programs
locale/record-status.o MODULE_NAME=locale_programs
locale/xasprintf.o MODULE_NAME=locale_programs
locale/localedef
locale/localedef.o MODULE_NAME=locale_programs
locale/ld-ctype.o MODULE_NAME=locale_programs
locale/ld-messages.o MODULE_NAME=locale_programs
locale/ld-monetary.o MODULE_NAME=locale_programs
locale/ld-numeric.o MODULE_NAME=locale_programs
locale/ld-time.o MODULE_NAME=locale_programs
locale/ld-paper.o MODULE_NAME=locale_programs
locale/ld-name.o MODULE_NAME=locale_programs
locale/ld-address.o MODULE_NAME=locale_programs
locale/ld-telephone.o MODULE_NAME=locale_programs
locale/ld-measurement.o MODULE_NAME=locale_programs
locale/ld-identification.o MODULE_NAME=locale_programs
locale/ld-collate.o MODULE_NAME=locale_programs
locale/charmap.o MODULE_NAME=locale_programs
locale/linereader.o MODULE_NAME=locale_programs
locale/locfile.o MODULE_NAME=locale_programs
locale/repertoire.o MODULE_NAME=locale_programs
locale/locarchive.o MODULE_NAME=locale_programs
locale/md5.o MODULE_NAME=locale_programs
locale/charmap-dir.o MODULE_NAME=locale_programs
locale/simple-hash.o MODULE_NAME=locale_programs
locale/xmalloc.o MODULE_NAME=locale_programs
locale/xstrdup.o MODULE_NAME=locale_programs
locale/record-status.o MODULE_NAME=locale_programs
locale/xasprintf.o MODULE_NAME=locale_programs
catgets/gencat
catgets/gencat.o MODULE_NAME=nonlib
catgets/xmalloc.o MODULE_NAME=nonlib
nss/makedb
nss/makedb.o MODULE_NAME=nonlib
nss/xmalloc.o MODULE_NAME=nonlib
nss/hash-string.o MODULE_NAME=nonlib
nss/getent
nss/getent.o MODULE_NAME=nonlib
posix/getconf
posix/getconf.o MODULE_NAME=nonlib
login/utmpdump
login/utmpdump.o MODULE_NAME=nonlib
debug/pcprofiledump
debug/pcprofiledump.o MODULE_NAME=nonlib
timezone/zic
timezone/zic.o MODULE_NAME=nonlib
timezone/zdump
timezone/zdump.o MODULE_NAME=nonlib
iconv/iconv_prog
iconv/iconv_prog.o MODULE_NAME=nonlib
iconv/iconv_charmap.o MODULE_NAME=iconvprogs
iconv/charmap.o MODULE_NAME=iconvprogs
iconv/charmap-dir.o MODULE_NAME=iconvprogs
iconv/linereader.o MODULE_NAME=iconvprogs
iconv/dummy-repertoire.o MODULE_NAME=iconvprogs
iconv/simple-hash.o MODULE_NAME=iconvprogs
iconv/xstrdup.o MODULE_NAME=iconvprogs
iconv/xmalloc.o MODULE_NAME=iconvprogs
iconv/record-status.o MODULE_NAME=iconvprogs
iconv/iconvconfig
iconv/iconvconfig.o MODULE_NAME=nonlib
iconv/strtab.o MODULE_NAME=iconvprogs
iconv/xmalloc.o MODULE_NAME=iconvprogs
iconv/hash-string.o MODULE_NAME=iconvprogs
nss/libnss_files.so MODULE_NAME=libnss_files
nss/libnss_compat.so.2 MODULE_NAME=libnss_compat
nss/libnss_db.so MODULE_NAME=libnss_db
hesiod/libnss_hesiod.so MODULE_NAME=libnss_hesiod
login/libutil.so MODULE_NAME=libutil
debug/libpcprofile.so MODULE_NAME=libpcprofile
debug/libSegFault.so MODULE_NAME=libSegFault
Also, to avoid adding both LFS and 64 bit time support on internal
tests they are moved to a newer 'testsuite-internal' module. It
should be similar to 'nonlib' regarding internal definition and
linking namespace.
This patch also enables LFS and 64 bit support of libsupport container
programs (echo-container, test-container, shell-container, and
true-container).
Checked on x86_64-linux-gnu and i686-linux-gnu.
Reviewed-by: DJ Delorie <dj@redhat.com>
(cherry picked from commit a6d2f948b71adcb5ea395cb04833bc645eab45e6)
diff --git a/Makeconfig b/Makeconfig
index 4e04dafb76a1e1a1..9accb5b38d1d37b3 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -882,6 +882,13 @@ endif
# -fno-math-errno.
+extra-math-flags = $(if $(filter libm,$(in-module)),-fno-math-errno,-fmath-errno)
+# Use 64 bit time_t support for installed programs
+installed-modules = nonlib nscd lddlibc4 libresolv ldconfig locale_programs \
+ iconvprogs libnss_files libnss_compat libnss_db libnss_hesiod \
+ libutil libpcprofile libSegFault
++extra-time-flags = $(if $(filter $(installed-modules),\
+ $(in-module)),-D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64)
+
# We might want to compile with some stack-protection flag.
ifneq ($(stack-protector),)
+stack-protector=$(stack-protector)
@@ -986,7 +993,7 @@ libio-include = -I$(..)libio
built-modules = iconvprogs iconvdata ldconfig lddlibc4 libmemusage \
libSegFault libpcprofile librpcsvc locale-programs \
memusagestat nonlib nscd extramodules libnldbl libsupport \
- testsuite
+ testsuite testsuite-internal
in-module = $(subst -,_,$(firstword $(libof-$(basename $(@F))) \
$(libof-$(<F)) \
@@ -1026,7 +1033,7 @@ endif
override CFLAGS = -std=gnu11 -fgnu89-inline $(config-extra-cflags) \
$(filter-out %frame-pointer,$(+cflags)) $(+gccwarn-c) \
- $(+extra-math-flags) \
+ $(+extra-math-flags) $(+extra-time-flags) \
$(sysdep-CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(<F)) \
$(CFLAGS-$(@F)) $(tls-model) \
$(foreach lib,$(libof-$(basename $(@F))) \
diff --git a/Makerules b/Makerules
index e5916f29fa0d4593..689842ba56c71b0d 100644
--- a/Makerules
+++ b/Makerules
@@ -1266,14 +1266,22 @@ lib := testsuite
include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
endif
-all-nonlib := $(strip $(tests-internal) $(test-internal-extras) \
- $(others) $(others-extras))
+all-nonlib := $(strip $(others) $(others-extras))
ifneq (,$(all-nonlib))
cpp-srcs-left = $(all-nonlib)
lib := nonlib
include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
endif
+# All internal tests use testsuite-internal module since for 64 bit time
+# support is set as default for MODULE_NAME=nonlib (which include some
+# installed programs).
+all-testsuite-internal := $(strip $(tests-internal) $(test-internal-extras))
+ifneq (,$(all-testsuite-internal))
+cpp-srcs-left = $(all-testsuite-internal)
+lib := testsuite-internal
+include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
+endif
ifeq ($(build-shared),yes)
# Generate normalized lists of symbols, versions, and data sizes.
diff --git a/elf/sotruss-lib.c b/elf/sotruss-lib.c
index e4ebc8dbc697df3f..45dc6d5ffe819475 100644
--- a/elf/sotruss-lib.c
+++ b/elf/sotruss-lib.c
@@ -91,7 +91,7 @@ init (void)
if (which_process == NULL || which_process[0] == '\0')
snprintf (endp, 13, ".%ld", (long int) pid);
- out_fd = open (fullname, O_RDWR | O_CREAT | O_TRUNC, 0666);
+ out_fd = open64 (fullname, O_RDWR | O_CREAT | O_TRUNC, 0666);
if (out_fd != -1)
print_pid = 0;
}
@@ -104,7 +104,7 @@ init (void)
program. */
if (out_fd == -1)
{
- out_fd = fcntl (STDERR_FILENO, F_DUPFD, 1000);
+ out_fd = fcntl64 (STDERR_FILENO, F_DUPFD, 1000);
if (out_fd == -1)
out_fd = dup (STDERR_FILENO);
}

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commit d910ba48f47158d21c322b9f7e96831c83f69c67
Author: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
Date: Wed Oct 26 16:04:23 2022 -0300
nis: Build libnsl with 64 bit time_t
And remove the usage of glibc reserved names.
Reviewed-by: DJ Delorie <dj@redhat.com>
(cherry picked from commit 545eefc2f5da61801ba82b7a32ca2589b769ec90)
diff --git a/Makeconfig b/Makeconfig
index 9accb5b38d1d37b3..89a2881b1ef605e4 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -885,7 +885,7 @@ endif
# Use 64 bit time_t support for installed programs
installed-modules = nonlib nscd lddlibc4 libresolv ldconfig locale_programs \
iconvprogs libnss_files libnss_compat libnss_db libnss_hesiod \
- libutil libpcprofile libSegFault
+ libutil libpcprofile libSegFault libnsl
+extra-time-flags = $(if $(filter $(installed-modules),\
$(in-module)),-D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64)
diff --git a/nis/nis_call.c b/nis/nis_call.c
index 043f1bd4316aa284..37feba201c37cbca 100644
--- a/nis/nis_call.c
+++ b/nis/nis_call.c
@@ -575,7 +575,7 @@ static struct nis_server_cache
unsigned int size;
unsigned int server_used;
unsigned int current_ep;
- __time64_t expires;
+ time_t expires;
char name[];
} *nis_server_cache[16];
static time_t nis_cold_start_mtime;
@@ -584,7 +584,7 @@ __libc_lock_define_initialized (static, nis_server_cache_lock)
static directory_obj *
nis_server_cache_search (const_nis_name name, int search_parent,
unsigned int *server_used, unsigned int *current_ep,
- struct __timespec64 *now)
+ struct timespec *now)
{
directory_obj *ret = NULL;
int i;
@@ -642,7 +642,7 @@ nis_server_cache_search (const_nis_name name, int search_parent,
static void
nis_server_cache_add (const_nis_name name, int search_parent,
directory_obj *dir, unsigned int server_used,
- unsigned int current_ep, struct __timespec64 *now)
+ unsigned int current_ep, struct timespec *now)
{
struct nis_server_cache **loc;
struct nis_server_cache *new;
@@ -708,7 +708,7 @@ __nisfind_server (const_nis_name name, int search_parent,
nis_error result = NIS_SUCCESS;
nis_error status;
directory_obj *obj;
- struct __timespec64 ts;
+ struct timespec ts;
unsigned int server_used = ~0;
unsigned int current_ep = ~0;
@@ -718,7 +718,7 @@ __nisfind_server (const_nis_name name, int search_parent,
if (*dir != NULL)
return NIS_SUCCESS;
- __clock_gettime64 (CLOCK_REALTIME, &ts);
+ clock_gettime (CLOCK_REALTIME, &ts);
if ((flags & NO_CACHE) == 0)
*dir = nis_server_cache_search (name, search_parent, &server_used,

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commit 01c0a0405c5ea63d9b528e062b935d2ff6a6e2ed
Author: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
Date: Wed Oct 26 16:04:24 2022 -0300
nscd: Use 64 bit time_t on libc nscd routines (BZ# 29402)
Although the nscd module is built with 64 bit time_t, the routines
linked direct to libc.so need to use the internal symbols.
Reviewed-by: DJ Delorie <dj@redhat.com>
(cherry picked from commit fa4a19277842fd09a4815a986f70e0fe0903836f)
diff --git a/nscd/nscd.h b/nscd/nscd.h
index b5da5be98a11d4de..1ce4c1f7fdb215f0 100644
--- a/nscd/nscd.h
+++ b/nscd/nscd.h
@@ -66,7 +66,7 @@ typedef enum
struct traced_file
{
/* Tracks the last modified time of the traced file. */
- time_t mtime;
+ __time64_t mtime;
/* Support multiple registered files per database. */
struct traced_file *next;
int call_res_init;
diff --git a/nscd/nscd_gethst_r.c b/nscd/nscd_gethst_r.c
index 81bf324256384de7..b6baa8abf881461c 100644
--- a/nscd/nscd_gethst_r.c
+++ b/nscd/nscd_gethst_r.c
@@ -113,7 +113,7 @@ __nscd_get_nl_timestamp (void)
if (map == NULL
|| (map != NO_MAPPING
&& map->head->nscd_certainly_running == 0
- && map->head->timestamp + MAPPING_TIMEOUT < time_now ()))
+ && map->head->timestamp + MAPPING_TIMEOUT < time64_now ()))
map = __nscd_get_mapping (GETFDHST, "hosts", &__hst_map_handle.mapped);
if (map == NO_MAPPING)

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commit e14a91e59d35bf2fa649a9726ccce838b8c6e4b7
Author: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
Date: Wed Oct 26 16:04:25 2022 -0300
time: Use 64 bit time on tzfile
The tzfile_mtime is already compared to 64 bit time_t stat call.
Reviewed-by: DJ Delorie <dj@redhat.com>
(cherry picked from commit 4e21c2075193e406a92c0d1cb091a7c804fda4d9)
diff --git a/time/tzfile.c b/time/tzfile.c
index 8668392ad387af05..84fd9df65f76f148 100644
--- a/time/tzfile.c
+++ b/time/tzfile.c
@@ -32,7 +32,7 @@
int __use_tzfile;
static dev_t tzfile_dev;
static ino64_t tzfile_ino;
-static time_t tzfile_mtime;
+static __time64_t tzfile_mtime;
struct ttinfo
{

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commit d0e2ac0c5902bd0e671863cc6cb14024d0365e67
Author: Alan Modra <amodra@gmail.com>
Date: Sat Nov 12 11:20:31 2022 +1030
elf/tst-tlsopt-powerpc fails when compiled with -mcpu=power10 (BZ# 29776)
Supports pcrel addressing of TLS GOT entry. Also tweak the non-pcrel
asm constraint to better reflect how the reg is used.
(cherry picked from commit 94628de77888c3292fc103840731ff85f283368e)
diff --git a/sysdeps/powerpc/mod-tlsopt-powerpc.c b/sysdeps/powerpc/mod-tlsopt-powerpc.c
index ee0db12a737d6ab5..51cc502f2860e969 100644
--- a/sysdeps/powerpc/mod-tlsopt-powerpc.c
+++ b/sysdeps/powerpc/mod-tlsopt-powerpc.c
@@ -24,7 +24,11 @@ tls_get_addr_opt_test (void)
tls_index *tls_arg;
#ifdef __powerpc64__
register unsigned long thread_pointer __asm__ ("r13");
- asm ("addi %0,2,foo@got@tlsgd" : "=r" (tls_arg));
+# ifdef __PCREL__
+ asm ("paddi %0,0,foo@got@tlsgd@pcrel,1" : "=b" (tls_arg));
+# else
+ asm ("addi %0,2,foo@got@tlsgd" : "=b" (tls_arg));
+# endif
#else
register unsigned long thread_pointer __asm__ ("r2");
asm ("bcl 20,31,1f\n1:\t"

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commit bbe4bbb6e8997b5ff9843bd3f32ac77dbaec7284
Author: Fangrui Song <maskray@google.com>
Date: Mon Aug 16 09:59:30 2021 -0700
elf: Drop elf/tls-macros.h in favor of __thread and tls_model attributes [BZ #28152] [BZ #28205]
elf/tls-macros.h was added for TLS testing when GCC did not support
__thread. __thread and tls_model attributes are mature now and have been
used by many newer tests.
Also delete tst-tls2.c which tests .tls_common (unused by modern GCC and
unsupported by Clang/LLD). .tls_common and .tbss definition are almost
identical after linking, so the runtime test doesn't add additional
coverage. Assembler and linker tests should be on the binutils side.
When LLD 13.0.0 is allowed in configure.ac
(https://sourceware.org/pipermail/libc-alpha/2021-August/129866.html),
`make check` result is on par with glibc built with GNU ld on aarch64
and x86_64.
As a future clean-up, TLS_GD/TLS_LD/TLS_IE/TLS_IE macros can be removed from
sysdeps/*/tls-macros.h. We can add optional -mtls-dialect={gnu2,trad}
tests to ensure coverage.
Tested on aarch64-linux-gnu, powerpc64le-linux-gnu, and x86_64-linux-gnu.
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
(cherry picked from commit 33c50ef42878b07ee6ead8b3f1a81d8c2c74697c)
Conflicts:
elf/Makefile
(different backport order)
diff --git a/elf/Makefile b/elf/Makefile
index feec365e4e5fe9b3..3a8590e0d3cc33ab 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -275,7 +275,6 @@ tests-static-internal := \
tst-ptrguard1-static \
tst-stackguard1-static \
tst-tls1-static \
- tst-tls2-static \
tst-tls1-static-non-pie \
# tests-static-internal
@@ -308,7 +307,6 @@ tests := \
tests-internal := \
$(tests-static-internal) \
tst-tls1 \
- tst-tls2 \
# tests-internal
tests-static := $(tests-static-normal) $(tests-static-internal)
diff --git a/elf/tls-macros.h b/elf/tls-macros.h
deleted file mode 100644
index e25e33b0f032099d..0000000000000000
--- a/elf/tls-macros.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Macros to support TLS testing in times of missing compiler support. */
-
-#define COMMON_INT_DEF(x) \
- asm (".tls_common " #x ",4,4")
-/* XXX Until we get compiler support we don't need declarations. */
-#define COMMON_INT_DECL(x)
-
-/* XXX This definition will probably be machine specific, too. */
-#define VAR_INT_DEF(x) \
- asm (".section .tdata\n\t" \
- ".globl " #x "\n" \
- ".balign 4\n" \
- #x ":\t.long 0\n\t" \
- ".size " #x ",4\n\t" \
- ".previous")
-/* XXX Until we get compiler support we don't need declarations. */
-#define VAR_INT_DECL(x)
-
-#include_next <tls-macros.h>
-
- /* XXX Each architecture must have its own asm for now. */
-#if !defined TLS_LE || !defined TLS_IE \
- || !defined TLS_LD || !defined TLS_GD
-# error "No support for this architecture so far."
-#endif
diff --git a/elf/tst-tls1.c b/elf/tst-tls1.c
index c31da56ce9cb3e8f..b3412213ee9eaa7e 100644
--- a/elf/tst-tls1.c
+++ b/elf/tst-tls1.c
@@ -1,13 +1,14 @@
/* glibc test for TLS in ld.so. */
#include <stdio.h>
-#include "tls-macros.h"
-
-
-/* Two common 'int' variables in TLS. */
-COMMON_INT_DEF(foo);
-COMMON_INT_DEF(bar);
+__thread int foo, bar __attribute__ ((tls_model("local-exec")));
+extern __thread int foo_gd asm ("foo") __attribute__ ((tls_model("global-dynamic")));
+extern __thread int foo_ld asm ("foo") __attribute__ ((tls_model("local-dynamic")));
+extern __thread int foo_ie asm ("foo") __attribute__ ((tls_model("initial-exec")));
+extern __thread int bar_gd asm ("bar") __attribute__ ((tls_model("global-dynamic")));
+extern __thread int bar_ld asm ("bar") __attribute__ ((tls_model("local-dynamic")));
+extern __thread int bar_ie asm ("bar") __attribute__ ((tls_model("initial-exec")));
static int
do_test (void)
@@ -18,63 +19,48 @@ do_test (void)
/* Set the variable using the local exec model. */
puts ("set bar to 1 (LE)");
- ap = TLS_LE (bar);
- *ap = 1;
+ bar = 1;
/* Get variables using initial exec model. */
fputs ("get sum of foo and bar (IE)", stdout);
- ap = TLS_IE (foo);
- bp = TLS_IE (bar);
+ ap = &foo_ie;
+ bp = &bar_ie;
printf (" = %d\n", *ap + *bp);
result |= *ap + *bp != 1;
- if (*ap != 0)
- {
- printf ("foo = %d\n", *ap);
- result = 1;
- }
- if (*bp != 1)
+ if (*ap != 0 || *bp != 1)
{
- printf ("bar = %d\n", *bp);
+ printf ("foo = %d\nbar = %d\n", *ap, *bp);
result = 1;
}
- /* Get variables using local dynamic model. */
- fputs ("get sum of foo and bar (LD)", stdout);
- ap = TLS_LD (foo);
- bp = TLS_LD (bar);
+ /* Get variables using local dynamic model or TLSDESC. */
+ fputs ("get sum of foo and bar (LD or TLSDESC)", stdout);
+ ap = &foo_ld;
+ bp = &bar_ld;
printf (" = %d\n", *ap + *bp);
result |= *ap + *bp != 1;
- if (*ap != 0)
- {
- printf ("foo = %d\n", *ap);
- result = 1;
- }
- if (*bp != 1)
+ if (*ap != 0 || *bp != 1)
{
- printf ("bar = %d\n", *bp);
+ printf ("foo = %d\nbar = %d\n", *ap, *bp);
result = 1;
}
- /* Get variables using generic dynamic model. */
- fputs ("get sum of foo and bar (GD)", stdout);
- ap = TLS_GD (foo);
- bp = TLS_GD (bar);
+ /* Get variables using general dynamic model or TLSDESC. */
+ fputs ("get sum of foo and bar (GD or TLSDESC)", stdout);
+ ap = &foo_gd;
+ bp = &bar_gd;
printf (" = %d\n", *ap + *bp);
result |= *ap + *bp != 1;
- if (*ap != 0)
- {
- printf ("foo = %d\n", *ap);
- result = 1;
- }
- if (*bp != 1)
+ if (*ap != 0 || *bp != 1)
{
- printf ("bar = %d\n", *bp);
+ printf ("foo = %d\nbar = %d\n", *ap, *bp);
result = 1;
}
+
return result;
}
diff --git a/elf/tst-tls2.c b/elf/tst-tls2.c
deleted file mode 100644
index 963b8d6c88bba0b5..0000000000000000
--- a/elf/tst-tls2.c
+++ /dev/null
@@ -1,82 +0,0 @@
-/* glibc test for TLS in ld.so. */
-#include <stdio.h>
-
-#include "tls-macros.h"
-
-
-/* Two 'int' variables in TLS. */
-VAR_INT_DEF(foo);
-VAR_INT_DEF(bar);
-
-
-static int
-do_test (void)
-{
- int result = 0;
- int *ap, *bp;
-
-
- /* Set the variable using the local exec model. */
- puts ("set bar to 1 (LE)");
- ap = TLS_LE (bar);
- *ap = 1;
-
-
- /* Get variables using initial exec model. */
- fputs ("get sum of foo and bar (IE)", stdout);
- ap = TLS_IE (foo);
- bp = TLS_IE (bar);
- printf (" = %d\n", *ap + *bp);
- result |= *ap + *bp != 1;
- if (*ap != 0)
- {
- printf ("foo = %d\n", *ap);
- result = 1;
- }
- if (*bp != 1)
- {
- printf ("bar = %d\n", *bp);
- result = 1;
- }
-
-
- /* Get variables using local dynamic model. */
- fputs ("get sum of foo and bar (LD)", stdout);
- ap = TLS_LD (foo);
- bp = TLS_LD (bar);
- printf (" = %d\n", *ap + *bp);
- result |= *ap + *bp != 1;
- if (*ap != 0)
- {
- printf ("foo = %d\n", *ap);
- result = 1;
- }
- if (*bp != 1)
- {
- printf ("bar = %d\n", *bp);
- result = 1;
- }
-
-
- /* Get variables using generic dynamic model. */
- fputs ("get sum of foo and bar (GD)", stdout);
- ap = TLS_GD (foo);
- bp = TLS_GD (bar);
- printf (" = %d\n", *ap + *bp);
- result |= *ap + *bp != 1;
- if (*ap != 0)
- {
- printf ("foo = %d\n", *ap);
- result = 1;
- }
- if (*bp != 1)
- {
- printf ("bar = %d\n", *bp);
- result = 1;
- }
-
- return result;
-}
-
-
-#include <support/test-driver.c>
diff --git a/elf/tst-tls3.c b/elf/tst-tls3.c
index 7e0abb4c58c8ff50..222b179626161897 100644
--- a/elf/tst-tls3.c
+++ b/elf/tst-tls3.c
@@ -1,13 +1,12 @@
/* glibc test for TLS in ld.so. */
#include <stdio.h>
-#include "tls-macros.h"
-
-/* One define int variable, two externs. */
-COMMON_INT_DECL(foo);
-VAR_INT_DECL(bar);
-VAR_INT_DEF(baz);
+__thread int foo, bar __attribute__ ((tls_model("initial-exec")));
+__thread int baz __attribute__ ((tls_model("local-exec")));
+extern __thread int foo_gd __attribute__ ((alias("foo"), tls_model("global-dynamic")));
+extern __thread int bar_gd __attribute__ ((alias("bar"), tls_model("global-dynamic")));
+extern __thread int baz_ld __attribute__ ((alias("baz"), tls_model("local-dynamic")));
extern int in_dso (void);
@@ -22,23 +21,20 @@ do_test (void)
/* Set the variable using the local exec model. */
puts ("set baz to 3 (LE)");
- ap = TLS_LE (baz);
- *ap = 3;
+ baz = 3;
/* Get variables using initial exec model. */
puts ("set variables foo and bar (IE)");
- ap = TLS_IE (foo);
- *ap = 1;
- bp = TLS_IE (bar);
- *bp = 2;
+ foo = 1;
+ bar = 2;
/* Get variables using local dynamic model. */
fputs ("get sum of foo, bar (GD) and baz (LD)", stdout);
- ap = TLS_GD (foo);
- bp = TLS_GD (bar);
- cp = TLS_LD (baz);
+ ap = &foo_gd;
+ bp = &bar_gd;
+ cp = &baz_ld;
printf (" = %d\n", *ap + *bp + *cp);
result |= *ap + *bp + *cp != 6;
if (*ap != 1)
diff --git a/elf/tst-tlsmod1.c b/elf/tst-tlsmod1.c
index 8d9156791be9eabf..a448c4dc37eaf01b 100644
--- a/elf/tst-tlsmod1.c
+++ b/elf/tst-tlsmod1.c
@@ -1,12 +1,12 @@
#include <stdio.h>
-#include "tls-macros.h"
+__thread int foo, bar __attribute__ ((tls_model("global-dynamic")));
+extern __thread int baz __attribute__ ((tls_model("global-dynamic")));
+extern __thread int foo_ie asm ("foo") __attribute__ ((tls_model("initial-exec")));
+extern __thread int bar_ie asm ("bar") __attribute__ ((tls_model("initial-exec")));
+extern __thread int baz_ie asm ("baz") __attribute__ ((tls_model("initial-exec")));
-/* One define int variable, two externs. */
-COMMON_INT_DEF(foo);
-VAR_INT_DEF(bar);
-VAR_INT_DECL(baz);
extern int in_dso (void);
@@ -19,8 +19,8 @@ in_dso (void)
/* Get variables using initial exec model. */
fputs ("get sum of foo and bar (IE)", stdout);
asm ("" ::: "memory");
- ap = TLS_IE (foo);
- bp = TLS_IE (bar);
+ ap = &foo_ie;
+ bp = &bar_ie;
printf (" = %d\n", *ap + *bp);
result |= *ap + *bp != 3;
if (*ap != 1)
@@ -35,11 +35,11 @@ in_dso (void)
}
- /* Get variables using generic dynamic model. */
- fputs ("get sum of foo and bar and baz (GD)", stdout);
- ap = TLS_GD (foo);
- bp = TLS_GD (bar);
- cp = TLS_GD (baz);
+ /* Get variables using generic dynamic model or TLSDESC. */
+ fputs ("get sum of foo and bar and baz (GD or TLSDESC)", stdout);
+ ap = &foo;
+ bp = &bar;
+ cp = &baz;
printf (" = %d\n", *ap + *bp + *cp);
result |= *ap + *bp + *cp != 6;
if (*ap != 1)
diff --git a/elf/tst-tlsmod2.c b/elf/tst-tlsmod2.c
index 40eb1407f864f64a..3223fe494bb7e1f0 100644
--- a/elf/tst-tlsmod2.c
+++ b/elf/tst-tlsmod2.c
@@ -1,9 +1,7 @@
#include <stdio.h>
-#include "tls-macros.h"
-
-COMMON_INT_DEF(foo);
+__thread int foo;
int
@@ -15,7 +13,7 @@ in_dso (int n, int *caller_foop)
puts ("foo"); /* Make sure PLT is used before macros. */
asm ("" ::: "memory");
- foop = TLS_GD (foo);
+ foop = &foo;
if (caller_foop != NULL && foop != caller_foop)
{
diff --git a/elf/tst-tlsmod3.c b/elf/tst-tlsmod3.c
index 6d186c47ee6ba104..d6e7498fd8331cb7 100644
--- a/elf/tst-tlsmod3.c
+++ b/elf/tst-tlsmod3.c
@@ -1,10 +1,10 @@
#include <stdio.h>
-#include "tls-macros.h"
extern int in_dso (int n, int *caller_foop);
-COMMON_INT_DEF(comm_n);
+extern __thread int foo;
+__thread int comm_n;
@@ -20,8 +20,8 @@ in_dso2 (void)
puts ("foo"); /* Make sure PLT is used before macros. */
asm ("" ::: "memory");
- foop = TLS_GD (foo);
- np = TLS_GD (comm_n);
+ foop = &foo;
+ np = &comm_n;
if (n != *np)
{
diff --git a/elf/tst-tlsmod4.c b/elf/tst-tlsmod4.c
index 86889aac7e58bcf5..f38919a8a94861c1 100644
--- a/elf/tst-tlsmod4.c
+++ b/elf/tst-tlsmod4.c
@@ -1,9 +1,7 @@
#include <stdio.h>
-#include "tls-macros.h"
-
-COMMON_INT_DEF(baz);
+__thread int baz;
int
@@ -15,7 +13,7 @@ in_dso (int n, int *caller_bazp)
puts ("foo"); /* Make sure PLT is used before macros. */
asm ("" ::: "memory");
- bazp = TLS_GD (baz);
+ bazp = &baz;
if (caller_bazp != NULL && bazp != caller_bazp)
{
diff --git a/elf/tst-tlsmod5.c b/elf/tst-tlsmod5.c
index a97c7e5e0c69de26..3f39c5bdb76e0b5c 100644
--- a/elf/tst-tlsmod5.c
+++ b/elf/tst-tlsmod5.c
@@ -1,3 +1 @@
-#include "tls-macros.h"
-
-COMMON_INT_DEF(foo);
+__thread int foo;
diff --git a/elf/tst-tlsmod6.c b/elf/tst-tlsmod6.c
index e968596dd4ef7756..7b3571f428b7243b 100644
--- a/elf/tst-tlsmod6.c
+++ b/elf/tst-tlsmod6.c
@@ -1,3 +1 @@
-#include "tls-macros.h"
-
-COMMON_INT_DEF(bar);
+__thread int bar;
diff --git a/sysdeps/powerpc/mod-tlsopt-powerpc.c b/sysdeps/powerpc/mod-tlsopt-powerpc.c
index 51cc502f2860e969..d941024963fc7e6a 100644
--- a/sysdeps/powerpc/mod-tlsopt-powerpc.c
+++ b/sysdeps/powerpc/mod-tlsopt-powerpc.c
@@ -1,11 +1,9 @@
/* shared library to test for __tls_get_addr optimization. */
#include <stdio.h>
-#include "../../elf/tls-macros.h"
#include "dl-tls.h"
-/* common 'int' variable in TLS. */
-COMMON_INT_DEF(foo);
+__thread int foo __attribute__ ((tls_model("global-dynamic")));
int
@@ -14,7 +12,7 @@ tls_get_addr_opt_test (void)
int result = 0;
/* Get variable using general dynamic model. */
- int *ap = TLS_GD (foo);
+ int *ap = &foo;
if (*ap != 0)
{
printf ("foo = %d\n", *ap);
diff --git a/sysdeps/powerpc/tst-tlsifunc.c b/sysdeps/powerpc/tst-tlsifunc.c
index 3095d41a68320d72..c8c0bada4547e1a4 100644
--- a/sysdeps/powerpc/tst-tlsifunc.c
+++ b/sysdeps/powerpc/tst-tlsifunc.c
@@ -21,9 +21,9 @@
#include <stdint.h>
#include <inttypes.h>
#include <libc-symbols.h>
-#include <tls-macros.h>
__thread int bar;
+extern __thread int bar_gd asm ("bar") __attribute__ ((tls_model("global-dynamic")));
static int *bar_ptr = NULL;
static uint32_t resolver_platform = 0;
@@ -57,7 +57,7 @@ get_platform (void)
void
init_foo (void)
{
- bar_ptr = TLS_GD (bar);
+ bar_ptr = &bar_gd;
}
int

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commit d36f457870a807f6f29880a2f2bde5e9b761f00c
Author: Martin Sebor <msebor@redhat.com>
Date: Tue Jan 25 17:38:31 2022 -0700
intl: Avoid -Wuse-after-free [BZ #26779]
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit 7845064d2d5a50e347ee9f4b78ec5e6316190154)
diff --git a/intl/localealias.c b/intl/localealias.c
index 375af2b03153acce..28041f2a48f643fa 100644
--- a/intl/localealias.c
+++ b/intl/localealias.c
@@ -318,7 +318,15 @@ read_alias_file (const char *fname, int fname_len)
if (string_space_act + alias_len + value_len > string_space_max)
{
- /* Increase size of memory pool. */
+#pragma GCC diagnostic push
+
+#if defined __GNUC__ && __GNUC__ >= 12
+ /* Suppress the valid GCC 12 warning until the code below is changed
+ to avoid using pointers to the reallocated block. */
+# pragma GCC diagnostic ignored "-Wuse-after-free"
+#endif
+
+ /* Increase size of memory pool. */
size_t new_size = (string_space_max
+ (alias_len + value_len > 1024
? alias_len + value_len : 1024));
@@ -351,6 +359,8 @@ read_alias_file (const char *fname, int fname_len)
value, value_len);
string_space_act += value_len;
+#pragma GCC diagnostic pop
+
++nmap;
++added;
}

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commit 92d5c52aaac0fa8e58b92e96bf2025d6848a2845
Author: Martin Sebor <msebor@redhat.com>
Date: Mon Oct 11 09:36:57 2021 -0600
resolv: Avoid GCC 12 false positive warning [BZ #28439].
Replace a call to sprintf with an equivalent pair of stpcpy/strcpy calls
to avoid a GCC 12 -Wformat-overflow false positive due to recent optimizer
improvements.
(cherry picked from commit eb73b87897798de981dbbf019aa957045d768adb)
diff --git a/resolv/res_query.c b/resolv/res_query.c
index 2f3c28cfc8c0d832..1d2c81737bc889c9 100644
--- a/resolv/res_query.c
+++ b/resolv/res_query.c
@@ -626,7 +626,9 @@ __res_context_querydomain (struct resolv_context *ctx,
RES_SET_H_ERRNO(statp, NO_RECOVERY);
return (-1);
}
- sprintf(nbuf, "%s.%s", name, domain);
+ char *p = __stpcpy (nbuf, name);
+ *p++ = '.';
+ strcpy (p, domain);
}
return __res_context_query (ctx, longname, class, type, answer,
anslen, answerp, answerp2, nanswerp2,

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commit 26c7c6bac9da305b634a661aa491dae2756581ec
Author: Joseph Myers <joseph@codesourcery.com>
Date: Tue Oct 5 14:25:40 2021 +0000
Fix stdlib/tst-setcontext.c for GCC 12 -Warray-compare
Building stdlib/tst-setcontext.c fails with GCC mainline:
tst-setcontext.c: In function 'f2':
tst-setcontext.c:61:16: error: comparison between two arrays [-Werror=array-compare]
61 | if (on_stack < st2 || on_stack >= st2 + sizeof (st2))
| ^
tst-setcontext.c:61:16: note: use '&on_stack[0] < &st2[0]' to compare the addresses
The comparison in this case is deliberate, so adjust it as suggested
in that note.
Tested with build-many-glibcs.py (GCC mainline) for aarch64-linux-gnu.
(cherry picked from commit a0f0c08e4fe18e78866539b0571f8e4b57dba7a3)
diff --git a/stdlib/tst-setcontext.c b/stdlib/tst-setcontext.c
index 1b511708c1469444..1c2925bb760c9eb4 100644
--- a/stdlib/tst-setcontext.c
+++ b/stdlib/tst-setcontext.c
@@ -58,7 +58,7 @@ f2 (void)
puts ("start f2");
printf ("&on_stack=%p\n", on_stack);
- if (on_stack < st2 || on_stack >= st2 + sizeof (st2))
+ if (&on_stack[0] < &st2[0] || &on_stack[0] >= st2 + sizeof (st2))
{
printf ("%s: memory stack is not where it belongs!", __FUNCTION__);
exit (1);

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commit 6ff61a51459d141782fbcc32ae81c0ef1954dad6
Author: Joseph Myers <joseph@codesourcery.com>
Date: Mon Oct 4 19:10:43 2021 +0000
Fix stdio-common tests for GCC 12 -Waddress
My glibc bot shows failures building the testsuite with GCC mainline
across all architectures:
tst-vfprintf-width-prec.c: In function 'do_test':
tst-vfprintf-width-prec.c:90:16: error: the comparison will always evaluate as 'false' for the address of 'result' will never be NULL [-Werror=address]
90 | if (result == NULL)
| ^~
tst-vfprintf-width-prec.c:89:13: note: 'result' declared here
89 | wchar_t result[100];
| ^~~~~~
This is clearly a correct warning; the comparison against NULL is
clearly a cut-and-paste mistake from an earlier case in the test that
does use calloc. Thus, remove the unnecessary check for NULL shown up
by the warning.
Similarly, two other tests have bogus comparisons against NULL; remove
those as well:
scanf14a.c:95:13: error: the comparison will always evaluate as 'false' for the address of 'fname' will never be NULL [-Werror=address]
95 | if (fname == NULL)
| ^~
scanf14a.c:93:8: note: 'fname' declared here
93 | char fname[strlen (tmpdir) + sizeof "/tst-scanf14.XXXXXX"];
| ^~~~~
scanf16a.c:125:13: error: the comparison will always evaluate as 'false' for the address of 'fname' will never be NULL [-Werror=address]
125 | if (fname == NULL)
| ^~
scanf16a.c:123:8: note: 'fname' declared here
123 | char fname[strlen (tmpdir) + sizeof "/tst-scanf16.XXXXXX"];
| ^~~~~
Tested with build-many-glibcs.py (GCC mainline) for aarch64-linux-gnu.
(cherry picked from commit a312e8fe6d89f5eae6a4583d5db577121e61c0b5)
diff --git a/stdio-common/scanf14a.c b/stdio-common/scanf14a.c
index 12adcff5a4970da1..b37712d1c673fa3a 100644
--- a/stdio-common/scanf14a.c
+++ b/stdio-common/scanf14a.c
@@ -92,8 +92,6 @@ main (void)
char fname[strlen (tmpdir) + sizeof "/tst-scanf14.XXXXXX"];
sprintf (fname, "%s/tst-scanf14.XXXXXX", tmpdir);
- if (fname == NULL)
- FAIL ();
/* Create a temporary file. */
int fd = mkstemp (fname);
diff --git a/stdio-common/scanf16a.c b/stdio-common/scanf16a.c
index 400d85a54e81c3cb..74d0295c97f73b14 100644
--- a/stdio-common/scanf16a.c
+++ b/stdio-common/scanf16a.c
@@ -122,8 +122,6 @@ main (void)
char fname[strlen (tmpdir) + sizeof "/tst-scanf16.XXXXXX"];
sprintf (fname, "%s/tst-scanf16.XXXXXX", tmpdir);
- if (fname == NULL)
- FAIL ();
/* Create a temporary file. */
int fd = mkstemp (fname);
diff --git a/stdio-common/tst-vfprintf-width-prec.c b/stdio-common/tst-vfprintf-width-prec.c
index 3192fd797ad4ea90..278d57f739f576e9 100644
--- a/stdio-common/tst-vfprintf-width-prec.c
+++ b/stdio-common/tst-vfprintf-width-prec.c
@@ -87,12 +87,6 @@ do_test (void)
}
{
wchar_t result[100];
- if (result == NULL)
- {
- printf ("error: calloc (%d, %zu): %m", ret + 1, sizeof (wchar_t));
- return 1;
- }
-
ret = swprintf (result, 100, L"%133000.999999999x", 17);
if (ret >= 0)
{

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commit 803c959745fd7c679e00f9bad58822616f0e51cb
Author: Joseph Myers <joseph@codesourcery.com>
Date: Mon Aug 2 16:33:44 2021 +0000
Fix build of nptl/tst-thread_local1.cc with GCC 12
The test nptl/tst-thread_local1.cc fails to build with GCC mainline
because of changes to what libstdc++ headers implicitly include what
other headers:
tst-thread_local1.cc: In function 'int do_test()':
tst-thread_local1.cc:177:5: error: variable 'std::array<std::pair<const char*, std::function<void(void* (*)(void*))> >, 2> do_thread_X' has initializer but incomplete type
177 | do_thread_X
| ^~~~~~~~~~~
Fix this by adding an explicit include of <array>.
Tested with build-many-glibcs.py for aarch64-linux-gnu.
(cherry picked from commit 2ee9b24f47db8d0a8d0ccadb999335a1d4cfc364)
diff --git a/nptl/tst-thread_local1.cc b/nptl/tst-thread_local1.cc
index 9608afa4b739e360..338aafea059e10b7 100644
--- a/nptl/tst-thread_local1.cc
+++ b/nptl/tst-thread_local1.cc
@@ -21,6 +21,7 @@
#include <stdio.h>
#include <string.h>
+#include <array>
#include <functional>
#include <string>
#include <thread>

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commit 88b3228d9f6322b035fa89bb34f82d93b4190d48
Author: Martin Sebor <msebor@redhat.com>
Date: Tue Jan 25 15:39:38 2022 -0700
Avoid -Wuse-after-free in tests [BZ #26779].
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit c094c232eb3246154265bb035182f92fe1b17ab8)
diff --git a/malloc/tst-malloc-backtrace.c b/malloc/tst-malloc-backtrace.c
index 4eb42e7f32f706e9..2ae3fb11efc245cb 100644
--- a/malloc/tst-malloc-backtrace.c
+++ b/malloc/tst-malloc-backtrace.c
@@ -20,6 +20,7 @@
#include <stdlib.h>
#include <support/support.h>
+#include <libc-diag.h>
#define SIZE 4096
@@ -29,7 +30,15 @@ __attribute__((noinline))
call_free (void *ptr)
{
free (ptr);
+#if __GNUC_PREREQ (12, 0)
+ /* Ignore a valid warning about using a pointer made indeterminate
+ by a prior call to free(). */
+ DIAG_IGNORE_NEEDS_COMMENT (12, "-Wuse-after-free");
+#endif
*(size_t *)(ptr - sizeof (size_t)) = 1;
+#if __GNUC_PREREQ (12, 0)
+ DIAG_POP_NEEDS_COMMENT;
+#endif
}
int
diff --git a/malloc/tst-malloc-check.c b/malloc/tst-malloc-check.c
index 6650d09cf6cdde75..c5c9254a9e8936b0 100644
--- a/malloc/tst-malloc-check.c
+++ b/malloc/tst-malloc-check.c
@@ -87,7 +87,15 @@ do_test (void)
merror ("errno is not set correctly.");
DIAG_POP_NEEDS_COMMENT;
+#if __GNUC_PREREQ (12, 0)
+ /* Ignore a valid warning about using a pointer made indeterminate
+ by a prior call to realloc(). */
+ DIAG_IGNORE_NEEDS_COMMENT (12, "-Wuse-after-free");
+#endif
free (p);
+#if __GNUC_PREREQ (12, 0)
+ DIAG_POP_NEEDS_COMMENT;
+#endif
p = malloc (512);
if (p == NULL)
@@ -105,7 +113,15 @@ do_test (void)
merror ("errno is not set correctly.");
DIAG_POP_NEEDS_COMMENT;
+#if __GNUC_PREREQ (12, 0)
+ /* Ignore a valid warning about using a pointer made indeterminate
+ by a prior call to realloc(). */
+ DIAG_IGNORE_NEEDS_COMMENT (12, "-Wuse-after-free");
+#endif
free (p);
+#if __GNUC_PREREQ (12, 0)
+ DIAG_POP_NEEDS_COMMENT;
+#endif
free (q);
return errors != 0;
diff --git a/malloc/tst-malloc-too-large.c b/malloc/tst-malloc-too-large.c
index a4349a9b4c506dfc..328b4a2a4fd72cf4 100644
--- a/malloc/tst-malloc-too-large.c
+++ b/malloc/tst-malloc-too-large.c
@@ -95,7 +95,15 @@ test_large_allocations (size_t size)
DIAG_POP_NEEDS_COMMENT;
#endif
TEST_VERIFY (errno == ENOMEM);
+#if __GNUC_PREREQ (12, 0)
+ /* Ignore a warning about using a pointer made indeterminate by
+ a prior call to realloc(). */
+ DIAG_IGNORE_NEEDS_COMMENT (12, "-Wuse-after-free");
+#endif
free (ptr_to_realloc);
+#if __GNUC_PREREQ (12, 0)
+ DIAG_POP_NEEDS_COMMENT;
+#endif
for (size_t nmemb = 1; nmemb <= 8; nmemb *= 2)
if ((size % nmemb) == 0)
@@ -113,14 +121,30 @@ test_large_allocations (size_t size)
test_setup ();
TEST_VERIFY (reallocarray (ptr_to_realloc, nmemb, size / nmemb) == NULL);
TEST_VERIFY (errno == ENOMEM);
+#if __GNUC_PREREQ (12, 0)
+ /* Ignore a warning about using a pointer made indeterminate by
+ a prior call to realloc(). */
+ DIAG_IGNORE_NEEDS_COMMENT (12, "-Wuse-after-free");
+#endif
free (ptr_to_realloc);
+#if __GNUC_PREREQ (12, 0)
+ DIAG_POP_NEEDS_COMMENT;
+#endif
ptr_to_realloc = malloc (16);
TEST_VERIFY_EXIT (ptr_to_realloc != NULL);
test_setup ();
TEST_VERIFY (reallocarray (ptr_to_realloc, size / nmemb, nmemb) == NULL);
TEST_VERIFY (errno == ENOMEM);
+#if __GNUC_PREREQ (12, 0)
+ /* Ignore a warning about using a pointer made indeterminate by
+ a prior call to realloc(). */
+ DIAG_IGNORE_NEEDS_COMMENT (12, "-Wuse-after-free");
+#endif
free (ptr_to_realloc);
+#if __GNUC_PREREQ (12, 0)
+ DIAG_POP_NEEDS_COMMENT;
+#endif
}
else
break;
diff --git a/malloc/tst-obstack.c b/malloc/tst-obstack.c
index ee1385d0f764e368..7d700c4f9a86b676 100644
--- a/malloc/tst-obstack.c
+++ b/malloc/tst-obstack.c
@@ -21,8 +21,8 @@ verbose_malloc (size_t size)
static void
verbose_free (void *buf)
{
- free (buf);
printf ("free (%p)\n", buf);
+ free (buf);
}
static int
diff --git a/malloc/tst-realloc.c b/malloc/tst-realloc.c
index c89ac07e192d70eb..80711beab1257ed5 100644
--- a/malloc/tst-realloc.c
+++ b/malloc/tst-realloc.c
@@ -138,8 +138,16 @@ do_test (void)
if (ok == 0)
merror ("first 16 bytes were not correct after failed realloc");
+#if __GNUC_PREREQ (12, 0)
+ /* Ignore a valid warning about using a pointer made indeterminate
+ by a prior call to realloc(). */
+ DIAG_IGNORE_NEEDS_COMMENT (12, "-Wuse-after-free");
+#endif
/* realloc (p, 0) frees p (C89) and returns NULL (glibc). */
p = realloc (p, 0);
+#if __GNUC_PREREQ (12, 0)
+ DIAG_POP_NEEDS_COMMENT;
+#endif
if (p != NULL)
merror ("realloc (p, 0) returned non-NULL.");
diff --git a/support/tst-support-open-dev-null-range.c b/support/tst-support-open-dev-null-range.c
index 8e29def1ce780629..80c97e51586bf6ce 100644
--- a/support/tst-support-open-dev-null-range.c
+++ b/support/tst-support-open-dev-null-range.c
@@ -39,10 +39,11 @@ check_path (int fd)
char file_path[PATH_MAX];
ssize_t file_path_length
= readlink (proc_fd_path, file_path, sizeof (file_path));
- free (proc_fd_path);
if (file_path_length < 0)
FAIL_EXIT1 ("readlink (%s, %p, %zu)", proc_fd_path, file_path,
sizeof (file_path));
+
+ free (proc_fd_path);
file_path[file_path_length] = '\0';
TEST_COMPARE_STRING (file_path, "/dev/null");
}

28
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commit dd0c72fb461a8879164588cd870702efae0c7237
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 20 15:15:12 2021 -0800
Regenerate ulps on x86_64 with GCC 12
Fix
FAIL: math/test-float-clog10
FAIL: math/test-float32-clog10
on Intel Core i7-1165G7 with GCC 12.
(cherry picked from commit de8a0897e3c084dc93676e331b610f146000a0ab)
diff --git a/sysdeps/x86_64/fpu/libm-test-ulps b/sysdeps/x86_64/fpu/libm-test-ulps
index 312575f93397c4b0..1c75f0ead46819a7 100644
--- a/sysdeps/x86_64/fpu/libm-test-ulps
+++ b/sysdeps/x86_64/fpu/libm-test-ulps
@@ -705,7 +705,7 @@ ldouble: 3
Function: Real part of "clog10_towardzero":
double: 5
-float: 5
+float: 6
float128: 4
ldouble: 8

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commit 80b24b86548eee3d96130a48e760d1d6c2e0c587
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 20 15:00:24 2021 -0800
math: Properly cast X_TLOSS to float [BZ #28713]
Add
#define AS_FLOAT_CONSTANT_1(x) x##f
#define AS_FLOAT_CONSTANT(x) AS_FLOAT_CONSTANT_1(x)
to cast X_TLOSS to float at compile-time to fix:
FAIL: math/test-float-j0
FAIL: math/test-float-jn
FAIL: math/test-float-y0
FAIL: math/test-float-y1
FAIL: math/test-float-yn
FAIL: math/test-float32-j0
FAIL: math/test-float32-jn
FAIL: math/test-float32-y0
FAIL: math/test-float32-y1
FAIL: math/test-float32-yn
when compiling with GCC 12.
Reviewed-by: Paul Zimmermann <Paul.Zimmermann@inria.fr>
(cherry picked from commit 6e30181b4a3ab6c56da0378b65f4d60504982300)
diff --git a/math/math-svid-compat.h b/math/math-svid-compat.h
index 5c18cb1b039cb3be..876cadde4084dab0 100644
--- a/math/math-svid-compat.h
+++ b/math/math-svid-compat.h
@@ -49,6 +49,8 @@ extern int matherr (struct exception *__exc);
extern int __matherr (struct exception *__exc);
#define X_TLOSS 1.41484755040568800000e+16
+#define AS_FLOAT_CONSTANT_1(x) x##f
+#define AS_FLOAT_CONSTANT(x) AS_FLOAT_CONSTANT_1(x)
/* Types of exceptions in the `type' field. */
#define DOMAIN 1
diff --git a/math/w_j0f_compat.c b/math/w_j0f_compat.c
index a4882eadb33853b2..f35a55219f7baa78 100644
--- a/math/w_j0f_compat.c
+++ b/math/w_j0f_compat.c
@@ -28,7 +28,8 @@
float
__j0f (float x)
{
- if (__builtin_expect (isgreater (fabsf (x), (float) X_TLOSS), 0)
+ if (__builtin_expect (isgreater (fabsf (x),
+ AS_FLOAT_CONSTANT (X_TLOSS)), 0)
&& _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
/* j0(|x|>X_TLOSS) */
return __kernel_standard_f (x, x, 134);
@@ -43,7 +44,7 @@ float
__y0f (float x)
{
if (__builtin_expect (islessequal (x, 0.0f)
- || isgreater (x, (float) X_TLOSS), 0)
+ || isgreater (x, AS_FLOAT_CONSTANT (X_TLOSS)), 0)
&& _LIB_VERSION != _IEEE_)
{
if (x < 0.0f)
diff --git a/math/w_j1f_compat.c b/math/w_j1f_compat.c
index f2ec7b327d2bc90a..c5e3ccd035031799 100644
--- a/math/w_j1f_compat.c
+++ b/math/w_j1f_compat.c
@@ -28,7 +28,8 @@
float
__j1f (float x)
{
- if (__builtin_expect (isgreater (fabsf (x), X_TLOSS), 0)
+ if (__builtin_expect (isgreater (fabsf (x),
+ AS_FLOAT_CONSTANT (X_TLOSS)), 0)
&& _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
/* j1(|x|>X_TLOSS) */
return __kernel_standard_f (x, x, 136);
@@ -43,7 +44,7 @@ float
__y1f (float x)
{
if (__builtin_expect (islessequal (x, 0.0f)
- || isgreater (x, (float) X_TLOSS), 0)
+ || isgreater (x, AS_FLOAT_CONSTANT (X_TLOSS)), 0)
&& _LIB_VERSION != _IEEE_)
{
if (x < 0.0f)
diff --git a/math/w_jnf_compat.c b/math/w_jnf_compat.c
index fb6e5060096fb070..925ccc4cd0988a8f 100644
--- a/math/w_jnf_compat.c
+++ b/math/w_jnf_compat.c
@@ -28,7 +28,8 @@
float
__jnf (int n, float x)
{
- if (__builtin_expect (isgreater (fabsf (x), (float) X_TLOSS), 0)
+ if (__builtin_expect (isgreater (fabsf (x),
+ AS_FLOAT_CONSTANT (X_TLOSS)), 0)
&& _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
/* jn(n,|x|>X_TLOSS) */
return __kernel_standard_f (n, x, 138);
@@ -43,7 +44,7 @@ float
__ynf (int n, float x)
{
if (__builtin_expect (islessequal (x, 0.0f)
- || isgreater (x, (float) X_TLOSS), 0)
+ || isgreater (x, AS_FLOAT_CONSTANT (X_TLOSS)), 0)
&& _LIB_VERSION != _IEEE_)
{
if (x < 0.0f)

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commit c5c666f34939d4bbf73aac8b753ab39621ebf33c
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 20 14:37:26 2021 -0800
s_sincosf.h: Change pio4 type to float [BZ #28713]
s_cosf.c and s_sinf.c have
if (abstop12 (y) < abstop12 (pio4))
where abstop12 takes a float argument, but pio4 is static const double.
pio4 is used only in calls to abstop12 and never in arithmetic. Apply
-static const double pio4 = 0x1.921FB54442D18p-1;
+static const float pio4 = 0x1.921FB6p-1f;
to fix:
FAIL: math/test-float-cos
FAIL: math/test-float-sin
FAIL: math/test-float-sincos
FAIL: math/test-float32-cos
FAIL: math/test-float32-sin
FAIL: math/test-float32-sincos
when compiling with GCC 12.
Reviewed-by: Paul Zimmermann <Paul.Zimmermann@inria.fr>
(cherry picked from commit d3e4f5a1014db09ff1c62c6506f92cba469e193d)
diff --git a/sysdeps/ieee754/flt-32/s_sincosf.h b/sysdeps/ieee754/flt-32/s_sincosf.h
index 125ab7f846c463c6..372d8542c2c9a9c7 100644
--- a/sysdeps/ieee754/flt-32/s_sincosf.h
+++ b/sysdeps/ieee754/flt-32/s_sincosf.h
@@ -24,7 +24,7 @@
/* 2PI * 2^-64. */
static const double pi63 = 0x1.921FB54442D18p-62;
/* PI / 4. */
-static const double pio4 = 0x1.921FB54442D18p-1;
+static const float pio4 = 0x1.921FB6p-1f;
/* Polynomial data (the cosine polynomial is negated in the 2nd entry). */
extern const sincos_t __sincosf_table[2] attribute_hidden;

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commit 6484ae5b8c4d4314f748e4d3c9a9baa5385e57c5
Author: Carlos O'Donell <carlos@redhat.com>
Date: Fri Jan 28 15:14:29 2022 -0500
malloc: Fix -Wuse-after-free warning in tst-mallocalign1 [BZ #26779]
The test leaks bits from the freed pointer via the return value
in ret, and the compiler correctly identifies this issue.
We switch the test to use TEST_VERIFY and terminate the test
if any of the pointers return an unexpected alignment.
This fixes another -Wuse-after-free error when compiling glibc
with gcc 12.
Tested on x86_64 and i686 without regression.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
(cherry picked from commit 3a7bed5f5a527dbd87412551f41e42e63aeef07a)
diff --git a/malloc/tst-mallocalign1.c b/malloc/tst-mallocalign1.c
index 294e821afebd25ac..3e09ff30c4aa9f91 100644
--- a/malloc/tst-mallocalign1.c
+++ b/malloc/tst-mallocalign1.c
@@ -20,6 +20,7 @@
#include <stdlib.h>
#include <inttypes.h>
#include <malloc-size.h>
+#include <support/check.h>
static void *
test (size_t s)
@@ -31,41 +32,42 @@ test (size_t s)
return p;
}
+#define ALIGNED(p) (((uintptr_t )p & MALLOC_ALIGN_MASK) == 0)
+
static int
do_test (void)
{
void *p;
- int ret = 0;
p = test (2);
- ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
+ TEST_VERIFY (ALIGNED (p));
free (p);
p = test (8);
- ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
+ TEST_VERIFY (ALIGNED (p));
free (p);
p = test (13);
- ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
+ TEST_VERIFY (ALIGNED (p));
free (p);
p = test (16);
- ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
+ TEST_VERIFY (ALIGNED (p));
free (p);
p = test (23);
- ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
+ TEST_VERIFY (ALIGNED (p));
free (p);
p = test (43);
- ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
+ TEST_VERIFY (ALIGNED (p));
free (p);
p = test (123);
- ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
+ TEST_VERIFY (ALIGNED (p));
free (p);
- return ret;
+ return 0;
}
#include <support/test-driver.c>

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commit c5c792092b57687ae3ebecbe8645fa71ddb19f8c
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Thu Feb 2 07:49:02 2023 -0500
cdefs: Limit definition of fortification macros
Define the __glibc_fortify and other macros only when __FORTIFY_LEVEL >
0. This has the effect of not defining these macros on older C90
compilers that do not have support for variable length argument lists.
Also trim off the trailing backslashes from the definition of
__glibc_fortify and __glibc_fortify_n macros.
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Florian Weimer <fweimer@redhat.com>
(cherry picked from commit 2337e04e21ba6040926ec871e403533f77043c40)
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index b166f3d209fe361f..92dbd3e1fc68dae7 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -151,6 +151,7 @@
# define __glibc_objsize(__o) __bos (__o)
#endif
+#if __USE_FORTIFY_LEVEL > 0
/* Compile time conditions to choose between the regular, _chk and _chk_warn
variants. These conditions should get evaluated to constant and optimized
away. */
@@ -186,7 +187,7 @@
? __ ## f ## _alias (__VA_ARGS__) \
: (__glibc_unsafe_len (__l, __s, __osz) \
? __ ## f ## _chk_warn (__VA_ARGS__, __osz) \
- : __ ## f ## _chk (__VA_ARGS__, __osz))) \
+ : __ ## f ## _chk (__VA_ARGS__, __osz)))
/* Fortify function f, where object size argument passed to f is the number of
elements and not total size. */
@@ -196,7 +197,8 @@
? __ ## f ## _alias (__VA_ARGS__) \
: (__glibc_unsafe_len (__l, __s, __osz) \
? __ ## f ## _chk_warn (__VA_ARGS__, (__osz) / (__s)) \
- : __ ## f ## _chk (__VA_ARGS__, (__osz) / (__s)))) \
+ : __ ## f ## _chk (__VA_ARGS__, (__osz) / (__s))))
+#endif
#if __GNUC_PREREQ (4,3)
# define __warnattr(msg) __attribute__((__warning__ (msg)))

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commit 0b962177ee3b45cf775176eb454fcf6aa1b0f6e3
Author: Andreas Schwab <schwab@suse.de>
Date: Thu Jan 26 14:25:05 2023 +0100
Use 64-bit time_t interfaces in strftime and strptime (bug 30053)
Both functions use time_t only internally, so the ABI is not affected.
(cherry picked from commit 41349f6f67c83e7bafe49f985b56493d2c4c9c77)
diff --git a/time/Makefile b/time/Makefile
index 38e3a7f4c77ea27f..ef3bb767b825f76a 100644
--- a/time/Makefile
+++ b/time/Makefile
@@ -50,7 +50,7 @@ tests := test_time clocktest tst-posixtz tst-strptime tst_wcsftime \
tst-clock tst-clock2 tst-clock_nanosleep tst-cpuclock1 \
tst-adjtime tst-ctime tst-difftime tst-mktime4 tst-clock_settime \
tst-settimeofday tst-itimer tst-gmtime tst-timegm \
- tst-timespec_get tst-timespec_getres
+ tst-timespec_get tst-timespec_getres tst-strftime4
tests-time64 := \
tst-adjtime-time64 \
@@ -65,6 +65,7 @@ tests-time64 := \
tst-itimer-time64 \
tst-mktime4-time64 \
tst-settimeofday-time64 \
+ tst-strftime4-time64 \
tst-timegm-time64 \
tst-timespec_get-time64 \
tst-timespec_getres-time64 \
diff --git a/time/strftime_l.c b/time/strftime_l.c
index d8cde9c5a3af87c7..57abbaa571694505 100644
--- a/time/strftime_l.c
+++ b/time/strftime_l.c
@@ -159,6 +159,10 @@ extern char *tzname[];
#ifdef _LIBC
# define tzname __tzname
# define tzset __tzset
+
+# define time_t __time64_t
+# define __gmtime_r(t, tp) __gmtime64_r (t, tp)
+# define mktime(tp) __mktime64 (tp)
#endif
#if !HAVE_TM_GMTOFF
diff --git a/time/strptime_l.c b/time/strptime_l.c
index 02c5d63c798f9c13..39d1e59b0871f4b4 100644
--- a/time/strptime_l.c
+++ b/time/strptime_l.c
@@ -30,8 +30,10 @@
#ifdef _LIBC
# define HAVE_LOCALTIME_R 0
# include "../locale/localeinfo.h"
-#endif
+# define time_t __time64_t
+# define __localtime_r(t, tp) __localtime64_r (t, tp)
+#endif
#if ! HAVE_LOCALTIME_R && ! defined localtime_r
# ifdef _LIBC
diff --git a/time/tst-strftime4-time64.c b/time/tst-strftime4-time64.c
new file mode 100644
index 0000000000000000..4d47ee7d79f9e648
--- /dev/null
+++ b/time/tst-strftime4-time64.c
@@ -0,0 +1 @@
+#include "tst-strftime4.c"
diff --git a/time/tst-strftime4.c b/time/tst-strftime4.c
new file mode 100644
index 0000000000000000..659716d0fa4534ae
--- /dev/null
+++ b/time/tst-strftime4.c
@@ -0,0 +1,52 @@
+/* Test strftime and strptime after 2038-01-19 03:14:07 UTC (bug 30053).
+ Copyright (C) 2023 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <time.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+ TEST_VERIFY_EXIT (setenv ("TZ", "UTC0", 1) == 0);
+ tzset ();
+ if (sizeof (time_t) > 4)
+ {
+ time_t wrap = (time_t) 2147483648LL;
+ char buf[80];
+ struct tm *tm = gmtime (&wrap);
+ TEST_VERIFY_EXIT (tm != NULL);
+ TEST_VERIFY_EXIT (strftime (buf, sizeof buf, "%s", tm) > 0);
+ puts (buf);
+ TEST_VERIFY (strcmp (buf, "2147483648") == 0);
+
+ struct tm tm2;
+ char *p = strptime (buf, "%s", &tm2);
+ TEST_VERIFY_EXIT (p != NULL && *p == '\0');
+ time_t t = mktime (&tm2);
+ printf ("%lld\n", (long long) t);
+ TEST_VERIFY (t == wrap);
+ }
+ else
+ FAIL_UNSUPPORTED ("32-bit time_t");
+ return 0;
+}
+
+#include <support/test-driver.c>

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commit 11ad405fd4c4c9f320d461d9ae1dd2e087cc8c32
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Wed Dec 29 10:20:46 2021 -0300
elf: Fix 64 time_t support for installed statically binaries
The usage of internal static symbol for statically linked binaries
does not work correctly for objects built with -D_TIME_BITS=64,
since the internal definition does not provide the expected aliases.
This patch makes it to use the default stat functions instead (which
uses the default 64 time_t alias and types).
Checked on i686-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit 9fe6f6363886aae6b2b210cae3ed1f5921299083)
diff --git a/elf/cache.c b/elf/cache.c
index 8a3404923c625d18..062ec7fb0c9c300f 100644
--- a/elf/cache.c
+++ b/elf/cache.c
@@ -319,8 +319,8 @@ print_cache (const char *cache_name)
if (fd < 0)
error (EXIT_FAILURE, errno, _("Can't open cache file %s\n"), cache_name);
- struct stat64 st;
- if (__fstat64 (fd, &st) < 0
+ struct stat st;
+ if (fstat (fd, &st) < 0
/* No need to map the file if it is empty. */
|| st.st_size == 0)
{
@@ -933,7 +933,7 @@ init_aux_cache (void)
}
int
-search_aux_cache (struct stat64 *stat_buf, int *flags,
+search_aux_cache (struct stat *stat_buf, int *flags,
unsigned int *osversion, unsigned int *isa_level,
char **soname)
{
@@ -995,7 +995,7 @@ insert_to_aux_cache (struct aux_cache_entry_id *id, int flags,
}
void
-add_to_aux_cache (struct stat64 *stat_buf, int flags,
+add_to_aux_cache (struct stat *stat_buf, int flags,
unsigned int osversion, unsigned int isa_level,
const char *soname)
{
@@ -1018,8 +1018,8 @@ load_aux_cache (const char *aux_cache_name)
return;
}
- struct stat64 st;
- if (__fstat64 (fd, &st) < 0 || st.st_size < sizeof (struct aux_cache_file))
+ struct stat st;
+ if (fstat (fd, &st) < 0 || st.st_size < sizeof (struct aux_cache_file))
{
close (fd);
init_aux_cache ();
@@ -1135,8 +1135,8 @@ save_aux_cache (const char *aux_cache_name)
char *dir = strdupa (aux_cache_name);
dir = dirname (dir);
- struct stat64 st;
- if (stat64 (dir, &st) < 0)
+ struct stat st;
+ if (stat (dir, &st) < 0)
{
if (mkdir (dir, 0700) < 0)
goto out_fail;
diff --git a/elf/chroot_canon.c b/elf/chroot_canon.c
index 045611e730be9e41..a70fd25046112290 100644
--- a/elf/chroot_canon.c
+++ b/elf/chroot_canon.c
@@ -67,7 +67,7 @@ chroot_canon (const char *chroot, const char *name)
for (start = end = name; *start; start = end)
{
- struct stat64 st;
+ struct stat st;
/* Skip sequence of multiple path-separators. */
while (*start == '/')
@@ -114,7 +114,7 @@ chroot_canon (const char *chroot, const char *name)
dest = mempcpy (dest, start, end - start);
*dest = '\0';
- if (lstat64 (rpath, &st) < 0)
+ if (lstat (rpath, &st) < 0)
{
if (*end == '\0')
goto done;
diff --git a/elf/ldconfig.c b/elf/ldconfig.c
index b8893637f8aaea8d..be47ad8c2d7f89f3 100644
--- a/elf/ldconfig.c
+++ b/elf/ldconfig.c
@@ -338,7 +338,7 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
inode data from *ST. */
static struct dir_entry *
new_sub_entry (const struct dir_entry *entry, const char *path,
- const struct stat64 *st)
+ const struct stat *st)
{
struct dir_entry *new_entry = xmalloc (sizeof (struct dir_entry));
new_entry->from_file = entry->from_file;
@@ -428,8 +428,8 @@ add_glibc_hwcaps_subdirectories (struct dir_entry *entry, const char *path)
continue;
/* See if this entry eventually resolves to a directory. */
- struct stat64 st;
- if (fstatat64 (dirfd (dir), e->d_name, &st, 0) < 0)
+ struct stat st;
+ if (fstatat (dirfd (dir), e->d_name, &st, 0) < 0)
/* Ignore unreadable entries. */
continue;
@@ -513,8 +513,8 @@ add_dir_1 (const char *line, const char *from_file, int from_line)
if (opt_chroot != NULL)
path = chroot_canon (opt_chroot, path);
- struct stat64 stat_buf;
- if (path == NULL || stat64 (path, &stat_buf))
+ struct stat stat_buf;
+ if (path == NULL || stat (path, &stat_buf))
{
if (opt_verbose)
error (0, errno, _("Can't stat %s"), entry->path);
@@ -542,15 +542,15 @@ add_dir (const char *line)
}
static int
-chroot_stat (const char *real_path, const char *path, struct stat64 *st)
+chroot_stat (const char *real_path, const char *path, struct stat *st)
{
int ret;
char *canon_path;
if (!opt_chroot)
- return stat64 (real_path, st);
+ return stat (real_path, st);
- ret = lstat64 (real_path, st);
+ ret = lstat (real_path, st);
if (ret || !S_ISLNK (st->st_mode))
return ret;
@@ -558,7 +558,7 @@ chroot_stat (const char *real_path, const char *path, struct stat64 *st)
if (canon_path == NULL)
return -1;
- ret = stat64 (canon_path, st);
+ ret = stat (canon_path, st);
free (canon_path);
return ret;
}
@@ -570,7 +570,7 @@ create_links (const char *real_path, const char *path, const char *libname,
{
char *full_libname, *full_soname;
char *real_full_libname, *real_full_soname;
- struct stat64 stat_lib, stat_so, lstat_so;
+ struct stat stat_lib, stat_so, lstat_so;
int do_link = 1;
int do_remove = 1;
/* XXX: The logics in this function should be simplified. */
@@ -605,7 +605,7 @@ create_links (const char *real_path, const char *path, const char *libname,
&& stat_lib.st_ino == stat_so.st_ino)
/* Link is already correct. */
do_link = 0;
- else if (lstat64 (full_soname, &lstat_so) == 0
+ else if (lstat (full_soname, &lstat_so) == 0
&& !S_ISLNK (lstat_so.st_mode))
{
error (0, 0, _("%s is not a symbolic link\n"), full_soname);
@@ -613,7 +613,7 @@ create_links (const char *real_path, const char *path, const char *libname,
do_remove = 0;
}
}
- else if (lstat64 (real_full_soname, &lstat_so) != 0
+ else if (lstat (real_full_soname, &lstat_so) != 0
|| !S_ISLNK (lstat_so.st_mode))
/* Unless it is a stale symlink, there is no need to remove. */
do_remove = 0;
@@ -657,7 +657,7 @@ manual_link (char *library)
char *real_library;
char *libname;
char *soname;
- struct stat64 stat_buf;
+ struct stat stat_buf;
int flag;
unsigned int osversion;
unsigned int isa_level;
@@ -711,7 +711,7 @@ manual_link (char *library)
}
/* Do some sanity checks first. */
- if (lstat64 (real_library, &stat_buf))
+ if (lstat (real_library, &stat_buf))
{
error (0, errno, _("Cannot lstat %s"), library);
goto out;
@@ -886,18 +886,18 @@ search_dir (const struct dir_entry *entry)
sprintf (real_file_name, "%s/%s", dir_name, direntry->d_name);
}
- struct stat64 lstat_buf;
+ struct stat lstat_buf;
/* We optimize and try to do the lstat call only if needed. */
if (direntry->d_type != DT_UNKNOWN)
lstat_buf.st_mode = DTTOIF (direntry->d_type);
else
- if (__glibc_unlikely (lstat64 (real_file_name, &lstat_buf)))
+ if (__glibc_unlikely (lstat (real_file_name, &lstat_buf)))
{
error (0, errno, _("Cannot lstat %s"), file_name);
continue;
}
- struct stat64 stat_buf;
+ struct stat stat_buf;
bool is_dir;
int is_link = S_ISLNK (lstat_buf.st_mode);
if (is_link)
@@ -915,7 +915,7 @@ search_dir (const struct dir_entry *entry)
continue;
}
}
- if (__glibc_unlikely (stat64 (target_name, &stat_buf)))
+ if (__glibc_unlikely (stat (target_name, &stat_buf)))
{
if (opt_verbose)
error (0, errno, _("Cannot stat %s"), file_name);
@@ -951,7 +951,7 @@ search_dir (const struct dir_entry *entry)
{
if (!is_link
&& direntry->d_type != DT_UNKNOWN
- && __builtin_expect (lstat64 (real_file_name, &lstat_buf), 0))
+ && __builtin_expect (lstat (real_file_name, &lstat_buf), 0))
{
error (0, errno, _("Cannot lstat %s"), file_name);
continue;
@@ -980,10 +980,10 @@ search_dir (const struct dir_entry *entry)
else
real_name = real_file_name;
- /* Call lstat64 if not done yet. */
+ /* Call lstat if not done yet. */
if (!is_link
&& direntry->d_type != DT_UNKNOWN
- && __builtin_expect (lstat64 (real_file_name, &lstat_buf), 0))
+ && __builtin_expect (lstat (real_file_name, &lstat_buf), 0))
{
error (0, errno, _("Cannot lstat %s"), file_name);
continue;
diff --git a/elf/readlib.c b/elf/readlib.c
index 7383c23249426c44..8901de2684835653 100644
--- a/elf/readlib.c
+++ b/elf/readlib.c
@@ -76,10 +76,10 @@ int
process_file (const char *real_file_name, const char *file_name,
const char *lib, int *flag, unsigned int *osversion,
unsigned int *isa_level, char **soname, int is_link,
- struct stat64 *stat_buf)
+ struct stat *stat_buf)
{
FILE *file;
- struct stat64 statbuf;
+ struct stat statbuf;
void *file_contents;
int ret;
ElfW(Ehdr) *elf_header;
@@ -99,7 +99,7 @@ process_file (const char *real_file_name, const char *file_name,
return 1;
}
- if (fstat64 (fileno (file), &statbuf) < 0)
+ if (fstat (fileno (file), &statbuf) < 0)
{
error (0, 0, _("Cannot fstat file %s.\n"), file_name);
fclose (file);
diff --git a/elf/sln.c b/elf/sln.c
index 26f371a4932cf475..f71321d565803f06 100644
--- a/elf/sln.c
+++ b/elf/sln.c
@@ -153,11 +153,11 @@ makesymlinks (const char *file)
static int
makesymlink (const char *src, const char *dest)
{
- struct stat64 stats;
+ struct stat stats;
const char *error;
/* Destination must not be a directory. */
- if (lstat64 (dest, &stats) == 0)
+ if (lstat (dest, &stats) == 0)
{
if (S_ISDIR (stats.st_mode))
{
diff --git a/sysdeps/generic/ldconfig.h b/sysdeps/generic/ldconfig.h
index 3ab757077d160520..c0eb95bcf989dddc 100644
--- a/sysdeps/generic/ldconfig.h
+++ b/sysdeps/generic/ldconfig.h
@@ -79,11 +79,11 @@ extern void init_aux_cache (void);
extern void load_aux_cache (const char *aux_cache_name);
-extern int search_aux_cache (struct stat64 *stat_buf, int *flags,
+extern int search_aux_cache (struct stat *stat_buf, int *flags,
unsigned int *osversion,
unsigned int *isa_level, char **soname);
-extern void add_to_aux_cache (struct stat64 *stat_buf, int flags,
+extern void add_to_aux_cache (struct stat *stat_buf, int flags,
unsigned int osversion,
unsigned int isa_level, const char *soname);
@@ -94,7 +94,7 @@ extern int process_file (const char *real_file_name, const char *file_name,
const char *lib, int *flag,
unsigned int *osversion, unsigned int *isa_level,
char **soname, int is_link,
- struct stat64 *stat_buf);
+ struct stat *stat_buf);
extern char *implicit_soname (const char *lib, int flag);

120
SOURCES/glibc-upstream-2.34-389.patch
Unescape View File

@ -0,0 +1,120 @@
commit 2d7550e6cfff541380d3a1f2ac33e76aaf1273de
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Feb 8 18:11:04 2023 +0100
elf: Smoke-test ldconfig -p against system /etc/ld.so.cache
The test is sufficient to detect the ldconfig bug fixed in
commit 9fe6f6363886aae6b2b210cae3ed1f5921299083 ("elf: Fix 64 time_t
support for installed statically binaries").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit 9fd63e35371b9939e9153907c6a753e6960b68ad)
diff --git a/elf/Makefile b/elf/Makefile
index 3a8590e0d3cc33ab..0daa8a85ec1a1bc5 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -553,6 +553,7 @@ ifeq ($(run-built-tests),yes)
tests-special += \
$(objpfx)noload-mem.out \
$(objpfx)tst-ldconfig-X.out \
+ $(objpfx)tst-ldconfig-p.out \
$(objpfx)tst-leaks1-mem.out \
$(objpfx)tst-rtld-help.out \
# tests-special
@@ -2259,6 +2260,11 @@ $(objpfx)tst-ldconfig-X.out : tst-ldconfig-X.sh $(objpfx)ldconfig
'$(run-program-env)' > $@; \
$(evaluate-test)
+$(objpfx)tst-ldconfig-p.out : tst-ldconfig-p.sh $(objpfx)ldconfig
+ $(SHELL) $< '$(common-objpfx)' '$(test-wrapper-env)' \
+ '$(run-program-env)' > $@; \
+ $(evaluate-test)
+
# Test static linking of all the libraries we can possibly link
# together. Note that in some configurations this may be less than the
# complete list of libraries we build but we try to maxmimize this list.
diff --git a/elf/tst-ldconfig-p.sh b/elf/tst-ldconfig-p.sh
new file mode 100644
index 0000000000000000..ec937bf4ec04e8c0
--- /dev/null
+++ b/elf/tst-ldconfig-p.sh
@@ -0,0 +1,77 @@
+#!/bin/sh
+# Test that ldconfig -p prints something useful.
+# Copyright (C) 2023 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <https://www.gnu.org/licenses/>.
+
+# Check that the newly built ldconfig -p can dump the system
+# /etc/ld.so.cache file. This should always work even if the ABIs are
+# not compatible, except in a cross-endian build (that presumably
+# involves emulation when running ldconfig).
+
+common_objpfx=$1
+test_wrapper_env=$2
+run_program_env=$3
+
+if ! test -r /etc/ld.so.cache; then
+ echo "warning: /etc/ld.so.cache does not exist, test skipped"
+ exit 77
+fi
+
+testout="${common_objpfx}elf/tst-ldconfig-p.out"
+# Truncate file.
+: > "$testout"
+
+${test_wrapper_env} \
+${run_program_env} \
+${common_objpfx}elf/ldconfig -p \
+ $testroot/lib >>"$testout" 2>>"$testout"
+status=$?
+echo "info: ldconfig exit status: $status" >>"$testout"
+
+errors=0
+case $status in
+ (0)
+ if head -n 1 "$testout" | \
+ grep -q "libs found in cache \`/etc/ld.so.cache'\$" ; then
+ echo "info: initial string found" >>"$testout"
+ else
+ echo "error: initial string not found" >>"$testout"
+ errors=1
+ fi
+ if grep -q "^ libc\.so\..* => " "$testout"; then
+ echo "info: libc.so.* string found" >>"$testout"
+ else
+ echo "error: libc.so.* string not found" >>"$testout"
+ errors=1
+ fi
+ ;;
+ (1)
+ if head -n 1 "$testout" | \
+ grep -q ": Cache file has wrong endianness\.$" ; then
+ echo "info: cache file has wrong endianess" >> "$testout"
+ else
+ echo "error: unexpected ldconfig error message" >> "$testout"
+ errors=1
+ fi
+ ;;
+ (*)
+ echo "error: unexpected exit status" >> "$testout"
+ errors=1
+ ;;
+esac
+
+exit $errors

105
SOURCES/wrap-find-debuginfo.sh
Unescape View File

@ -15,8 +15,16 @@
set -ex
ldso_tmp="$(mktemp)"
libc_tmp="$(mktemp)"
workdir="$(mktemp -d -t find_debuginfo.XXXXXX)"
ldso_tmp="$workdir/ld.so"
libc_tmp_dir="$workdir/"
# Return the path where a libc should be saved temporarily. This path is
# based on its original path received in $1.
libc_tmp_path() {
echo "$libc_tmp_dir"`dirname "$1"`"/libc.so"
}
# Prefer a separately installed debugedit over the RPM-integrated one.
if command -v debugedit >/dev/null ; then
@ -26,7 +34,7 @@ else
fi
cleanup () {
rm -f "$ldso_tmp" "$libc_tmp"
rm -rf "$workdir"
}
trap cleanup 0
@ -37,8 +45,8 @@ shift
# See ldso_path setting in glibc.spec.
ldso_path=
for ldso_candidate in `find "$sysroot_path" -regextype posix-extended \
-regex '.*/ld(-.*|64|)\.so\.[0-9]+$' -type f` ; do
for ldso_candidate in `find "$sysroot_path" -maxdepth 2 \
-regextype posix-extended -regex '.*/ld(-.*|64|)\.so\.[0-9]+$' -type f` ; do
if test -z "$ldso_path" ; then
ldso_path="$ldso_candidate"
else
@ -48,47 +56,71 @@ for ldso_candidate in `find "$sysroot_path" -regextype posix-extended \
done
# libc.so.6 always uses this name, so it is simpler to locate.
libc_path=
for libc_candidate in `find "$sysroot_path" -name libc.so.6`; do
if test -z "$libc_path" ; then
libc_path="$libc_candidate"
else
echo "error: multiple libc.so.6 candidates: $libc_path, $libc_candidate"
exit 1
fi
done
libc_path=`find "$sysroot_path" -name libc.so.6`
# Preserve the original files.
cp "$ldso_path" "$ldso_tmp"
cp "$libc_path" "$libc_tmp"
for lib in $libc_path ; do
libtmp=`libc_tmp_path $lib`
mkdir -p `dirname "$libtmp"`
cp "$lib" "$libtmp"
done
# Run the debuginfo extraction.
"$script_path" "$@"
# Restore the original files.
for lib in $libc_path ; do
libtmp=`libc_tmp_path "$lib"`
# libc.so.6: Extract the .gnu_debuglink section
objcopy -j.gnu_debuglink --set-section-flags .gnu_debuglink=alloc \
-O binary "$lib" "$libtmp.debuglink"
# Restore the original files.
cp "$libtmp" "$lib"
# Reduce the size of libc notes. Primarily for annobin.
objcopy --merge-notes "$lib"
# libc.so.6: Restore the .gnu_debuglink section
objcopy --add-section .gnu_debuglink="$libtmp.debuglink" "$lib"
# libc.so.6: Reduce to valuable symbols. Eliminate file symbols,
# annobin symbols, and symbols used by the glibc build to implement
# hidden aliases (__EI_*). We would also like to remove __GI_*
# symbols, but even listing them explicitly (as in -K __GI_strlen)
# still causes strip to remove them, so there is no filtering of
# __GI_* here. (Debuginfo is gone after this, so no need to optimize
# it.)
strip -w \
-K '*' \
-K '!*.c' \
-K '!*.os' \
-K '!.annobin_*' \
-K '!__EI_*' \
-K '!__PRETTY_FUNCTION__*' \
"$lib"
done
# Restore the original ld.so.
cp "$ldso_tmp" "$ldso_path"
cp "$libc_tmp" "$libc_path"
# Reduce the size of notes. Primarily for annobin.
objcopy --merge-notes "$ldso_path"
objcopy --merge-notes "$libc_path"
# libc.so.6: Reduce to valuable symbols. Eliminate file symbols,
# annobin symbols, and symbols used by the glibc build to implement
# hidden aliases (__EI_*). We would also like to remove __GI_*
# symbols, but even listing them explicitly (as in -K __GI_strlen)
# still causes strip to remove them, so there is no filtering of
# __GI_* here. (Debuginfo is gone after this, so no need to optimize
# it.)
strip -w \
-K '*' \
-K '!*.c' \
-K '!*.os' \
-K '!.annobin_*' \
-K '!__EI_*' \
-K '!__PRETTY_FUNCTION__*' \
"$libc_path"
# ld.so does not have separated debuginfo and so the debuginfo file
# generated by find-debuginfo is redundant. Therefore, remove it.
ldso_debug=
for ldso_debug_candidate in `find "$sysroot_path" -maxdepth 2 \
-regextype posix-extended \
-regex '.*/ld(-.*|64|)\.so\.[0-9]+.*debug$' -type f` ; do
if test -z "$ldso_debug" ; then
ldso_debug="$ldso_debug_candidate"
else
echo "error: multiple ld.so debug candidates: $ldso_debug, $ldso_debug_candidate"
exit 1
fi
done
rm -f "$ldso_debug"
# ld.so: Rewrite the source file paths to match the extracted
# locations. First compute the arguments for invoking debugedit.
@ -112,6 +144,11 @@ while true ; do
done
debug_base_name=${last_arg:-$RPM_BUILD_ROOT}
$debugedit -b "$debug_base_name" -d "$debug_dest_name" -n $ldso_path
# Remove the .annobin* symbols (and only them).
if nm --format=posix "$ldso_path" | cut -d' ' -f1 \
| grep '^\.annobin' > "$ldso_tmp.annobin-symbols"; then
objcopy --strip-symbols="$ldso_tmp.annobin-symbols" "$ldso_path"
fi
# Apply single-file DWARF optimization.
dwz $ldso_path

411
SPECS/glibc.spec
Unescape View File

@ -69,6 +69,13 @@
%undefine with_valgrind
%endif
# Build the POWER10 runtime on POWER, but only for downstream.
%ifarch ppc64le
%define buildpower10 0%{?rhel} > 0
%else
%define buildpower10 0
%endif
# The annobin annotations cause binutils to produce broken ARM EABI
# unwinding information. Symptom is a hang/test failure for
# malloc/tst-malloc-stats-cancellation. See
@ -148,7 +155,7 @@ end \
Summary: The GNU libc libraries
Name: glibc
Version: %{glibcversion}
Release: 40%{?dist}.1
Release: 60%{?dist}
# In general, GPLv2+ is used by programs, LGPLv2+ is used for
# libraries.
@ -203,6 +210,19 @@ rpm.define("__debug_install_post bash " .. wrapper
.. " " .. sysroot .. " " .. original)
}
# sysroot package support. These contain arch-specific packages, so
# turn off the rpmbuild check.
%global _binaries_in_noarch_packages_terminate_build 0
# Variant of %%dist that contains just the distribution release, no affixes.
%{?fedora:%global sysroot_dist fc%{fedora}}
%{?rhel:%global sysroot_dist el%{rhel}}
%{?!sysroot_dist:%global sysroot_dist root}
# The name of the sysroot package.
%global sysroot_package_arch sysroot-%{_arch}-%{sysroot_dist}-%{name}
# Installed path for the sysroot tree. Must contain /sys-root/, which
# triggers filtering.
%global sysroot_prefix /usr/%{_arch}-redhat-linux/sys-root/%{sysroot_dist}
# The wrapper script relies on the fact that debugedit does not change
# build IDs.
%define _no_recompute_build_ids 1
@ -579,7 +599,107 @@ Patch371: glibc-upstream-2.34-299.patch
Patch372: glibc-upstream-2.34-300.patch
Patch373: glibc-upstream-2.34-301.patch
Patch374: glibc-upstream-2.34-302.patch
Patch375: glibc-rh2142111.patch
Patch375: glibc-upstream-2.34-303.patch
Patch376: glibc-upstream-2.34-304.patch
Patch377: glibc-upstream-2.34-305.patch
Patch378: glibc-upstream-2.34-306.patch
Patch379: glibc-upstream-2.34-307.patch
Patch380: glibc-upstream-2.34-308.patch
Patch381: glibc-rh2118666.patch
Patch382: glibc-rh2128615-1.patch
Patch383: glibc-rh2128615-2.patch
Patch384: glibc-rh2128615-3.patch
Patch385: glibc-rh2117712-1.patch
Patch386: glibc-rh2117712-2.patch
Patch387: glibc-rh2117712-3.patch
Patch388: glibc-rh2117712-4.patch
Patch389: glibc-rh2117712-5.patch
Patch390: glibc-rh2117712-6.patch
Patch391: glibc-upstream-2.34-309.patch
Patch392: glibc-upstream-2.34-310.patch
Patch393: glibc-upstream-2.34-311.patch
Patch394: glibc-upstream-2.34-312.patch
# glibc-2.34-313-gbc5cb538e5 backported above as glibc-rh2118666.patch.
Patch395: glibc-upstream-2.34-314.patch
Patch396: glibc-upstream-2.34-315.patch
Patch397: glibc-upstream-2.34-316.patch
Patch398: glibc-upstream-2.34-317.patch
Patch399: glibc-upstream-2.34-318.patch
Patch400: glibc-upstream-2.34-319.patch
Patch401: glibc-upstream-2.34-320.patch
Patch402: glibc-upstream-2.34-321.patch
Patch403: glibc-upstream-2.34-322.patch
Patch404: glibc-upstream-2.34-323.patch
Patch405: glibc-upstream-2.34-324.patch
Patch406: glibc-upstream-2.34-325.patch
Patch407: glibc-upstream-2.34-326.patch
Patch408: glibc-upstream-2.34-327.patch
# glibc-2.34-328-g2def56a349 conflicts with glibc-rh2096191-2.patch;
# glibc-rh2129005.patch contains the original master branch commit instead.
Patch409: glibc-rh2129005.patch
Patch410: glibc-upstream-2.34-329.patch
Patch411: glibc-upstream-2.34-330.patch
Patch412: glibc-upstream-2.34-331.patch
Patch413: glibc-upstream-2.34-332.patch
Patch414: glibc-upstream-2.34-333.patch
Patch415: glibc-upstream-2.34-334.patch
Patch416: glibc-upstream-2.34-335.patch
Patch417: glibc-upstream-2.34-336.patch
Patch418: glibc-upstream-2.34-337.patch
Patch419: glibc-upstream-2.34-338.patch
Patch420: glibc-upstream-2.34-339.patch
Patch421: glibc-upstream-2.34-340.patch
Patch422: glibc-upstream-2.34-341.patch
Patch423: glibc-upstream-2.34-342.patch
Patch424: glibc-upstream-2.34-343.patch
Patch425: glibc-upstream-2.34-344.patch
Patch426: glibc-upstream-2.34-345.patch
Patch427: glibc-upstream-2.34-346.patch
Patch428: glibc-upstream-2.34-347.patch
Patch429: glibc-upstream-2.34-348.patch
Patch430: glibc-upstream-2.34-349.patch
Patch431: glibc-upstream-2.34-350.patch
Patch432: glibc-upstream-2.34-351.patch
Patch433: glibc-upstream-2.34-352.patch
Patch434: glibc-upstream-2.34-353.patch
Patch435: glibc-upstream-2.34-354.patch
Patch436: glibc-upstream-2.34-355.patch
Patch437: glibc-upstream-2.34-356.patch
Patch438: glibc-upstream-2.34-357.patch
Patch439: glibc-upstream-2.34-358.patch
Patch440: glibc-upstream-2.34-359.patch
# glibc-2.34-360-g75b0edb7ef only changes NEWS.
Patch441: glibc-upstream-2.34-361.patch
Patch442: glibc-upstream-2.34-362.patch
Patch443: glibc-upstream-2.34-363.patch
Patch444: glibc-upstream-2.34-364.patch
Patch445: glibc-upstream-2.34-365.patch
Patch446: glibc-rh2149102.patch
Patch447: glibc-upstream-2.34-366.patch
Patch448: glibc-upstream-2.34-367.patch
Patch449: glibc-upstream-2.34-368.patch
Patch450: glibc-upstream-2.34-369.patch
Patch451: glibc-upstream-2.34-370.patch
Patch452: glibc-upstream-2.34-371.patch
Patch453: glibc-upstream-2.34-372.patch
Patch454: glibc-upstream-2.34-373.patch
Patch455: glibc-upstream-2.34-374.patch
Patch456: glibc-upstream-2.34-375.patch
Patch457: glibc-upstream-2.34-376.patch
Patch458: glibc-upstream-2.34-377.patch
Patch459: glibc-upstream-2.34-378.patch
Patch460: glibc-upstream-2.34-379.patch
Patch461: glibc-upstream-2.34-380.patch
Patch462: glibc-upstream-2.34-381.patch
Patch463: glibc-upstream-2.34-382.patch
Patch464: glibc-upstream-2.34-383.patch
Patch465: glibc-upstream-2.34-384.patch
Patch466: glibc-rh2162962.patch
Patch467: glibc-upstream-2.34-385.patch
Patch468: glibc-upstream-2.34-386.patch
# glibc-upstream-2.34-387.patch is a NEWS-only update. Skipped downstream.
Patch469: glibc-upstream-2.34-388.patch
Patch470: glibc-upstream-2.34-389.patch
##############################################################################
# Continued list of core "glibc" package information:
@ -1381,6 +1501,21 @@ libpthread_nonshared.a which is no longer used. The static library
libpthread_nonshared.a is an internal implementation detail of the C
runtime and should not be expected to exist.
%if %{without bootstrap}
%package -n %sysroot_package_arch
Summary: Sysroot package for glibc, %{_arch} architecture
BuildArch: noarch
Provides: sysroot-%{_arch}-%{name}
# The files are not usable for execution, so do not provide nor
# require anything.
AutoReqProv: no
%description -n %sysroot_package_arch
This package contains development files for the glibc package
that can be installed across architectures.
%dnl %%{without bootstrap}
%endif
##############################################################################
# Prepare for the build.
##############################################################################
@ -1583,6 +1718,15 @@ build()
# Default set of compiler options.
build
%if %{buildpower10}
(
GCC="$GCC -mcpu=power10 -mtune=power10"
GXX="$GXX -mcpu=power10 -mtune=power10"
core_with_options="--with-cpu=power10"
build power10
)
%endif
##############################################################################
# Install glibc...
##############################################################################
@ -1650,23 +1794,27 @@ install_different()
mkdir -p "$destdir"
mkdir -p "$libdestdir"
# Walk all of the libraries we installed...
for lib in libc math/libm nptl/libpthread rt/librt nptl_db/libthread_db
for lib in libc math/libm
do
libbase=${lib#*/}
# Take care that `libbaseso' has a * that needs expanding so
# take care with quoting.
libbaseso=$(basename %{glibc_sysroot}/%{_lib}/${libbase}-*.so)
libbaseso=$(basename %{glibc_sysroot}/%{_lib}/${libbase}.so.*)
# Only install if different from default build library.
if cmp -s ${lib}.so ../build-%{target}/${lib}.so; then
ln -sf "$subdir_up"/$libbaseso $libdestdir/$libbaseso
else
cp -a ${lib}.so $libdestdir/$libbaseso
fi
dlib=$libdestdir/$(basename %{glibc_sysroot}/%{_lib}/${libbase}.so.*)
ln -sf $libbaseso $dlib
done
}
%if %{buildpower10}
pushd build-%{target}-power10
install_different "$RPM_BUILD_ROOT/%{_libdir}/glibc-hwcaps" power10 ..
popd
%endif
##############################################################################
# Remove the files we don't want to distribute
##############################################################################
@ -1886,6 +2034,61 @@ done
##############################################################################
ar cr %{glibc_sysroot}%{_prefix}/%{_lib}/libpthread_nonshared.a
###############################################################################
# Sysroot package creation.
###############################################################################
%if %{without bootstrap}
mkdir -p %{glibc_sysroot}/%{sysroot_prefix}
pushd %{glibc_sysroot}/%{sysroot_prefix}
mkdir -p usr/lib usr/lib64
cp -a %{glibc_sysroot}/%{_prefix}/include usr/.
for lib in lib lib64; do
for pfx in "" %{_prefix}/; do
if test -d %{glibc_sysroot}/$pfx$lib ; then
# Implement UsrMove: everything goes into usr/$lib. Only
# copy files directly in $lib.
find %{glibc_sysroot}/$pfx$lib -maxdepth 1 -type f \
| xargs -I '{}' cp '{}' usr/$lib/.
# Symbolic links need to be adjusted for UsrMove: They
# need to stay within the same directory.
for sl in `find %{glibc_sysroot}/$pfx$lib -maxdepth 1 -type l`; do
set +x
slbase=$(basename $sl)
sltarget=$(basename $(readlink $sl))
if ! test -r usr/$lib/$sltarget; then
echo "$sl: inferred $sltarget ($(readlink $sl)) missing"
exit 1
fi
set -x
ln -s $sltarget usr/$lib/$slbase
done
fi
done
done
# Workaround for the lack of a kernel sysroot package. Copy the
# kernel headers into the sysroot.
rpm -ql kernel-headers | grep "^/usr/include" | while read f ; do
if test -f "$f" ; then
install -D "$f" "./$f"
fi
done
# Remove the executable bit from files in the sysroot. This prevents
# debuginfo extraction.
find -type f | xargs chmod a-x
# Use sysroot-relative paths in linker script. Ignore symbolic links.
sed -e 's,\([^0-9a-zA-Z=*]/lib\),=/usr/lib,g' \
-e 's,\([^0-9a-zA-Z=*]\)/,\1=/,g' \
-i $(find -type f -name 'lib[cm].so')
popd
%dnl %%{without bootstrap}
%endif
##############################################################################
# Beyond this point in the install process we no longer modify the set of
# installed files.
@ -1974,13 +2177,14 @@ touch compat-libpthread-nonshared.filelist
# language specific sub-packages.
# libnss_ files go into subpackages related to NSS modules.
# and .*/share/i18n/charmaps/.*), they go into the sub-package
# "locale-source":
# "locale-source". /sys-root/ files are put into the sysroot package.
sed -e '\,.*/share/locale/\([^/_]\+\).*/LC_MESSAGES/.*\.mo,d' \
-e '\,.*/share/i18n/locales/.*,d' \
-e '\,.*/share/i18n/charmaps/.*,d' \
-e '\,.*/etc/\(localtime\|nsswitch.conf\|ld\.so\.conf\|ld\.so\.cache\|default\|rpc\|gai\.conf\),d' \
-e '\,.*/%{_libdir}/lib\(pcprofile\|memusage\)\.so,d' \
-e '\,.*/bin/\(memusage\|mtrace\|xtrace\|pcprofiledump\),d'
-e '\,.*/bin/\(memusage\|mtrace\|xtrace\|pcprofiledump\),d' \
-e '\,.*/sys-root,d'
} | sort > master.filelist
# The master file list is now used by each subpackage to list their own
@ -2305,6 +2509,16 @@ pushd build-%{target}
run_tests
popd
%if %{buildpower10}
# Run this test only if the server supports Power10 instructions.
if LD_SHOW_AUXV=1 /bin/true | grep -E "AT_HWCAP2:[^$]*arch_3_1" > /dev/null; then
echo ====================TESTING -mcpu=power10=============
pushd build-%{target}-power10
run_tests
popd
fi
%endif
echo ====================TESTING END=====================
PLTCMD='/^Relocation section .*\(\.rela\?\.plt\|\.rela\.IA_64\.pltoff\)/,/^$/p'
echo ====================PLT RELOCS LD.SO================
@ -2315,8 +2529,9 @@ echo ====================PLT RELOCS END==================
# Obtain a way to run the dynamic loader. Avoid matching the symbolic
# link and then pick the first loader (although there should be only
# one). See wrap-find-debuginfo.sh.
ldso_path="$(find %{glibc_sysroot}/ -regextype posix-extended \
# one). Use -maxdepth 2 to avoid descending into the /sys-root/
# sub-tree. See wrap-find-debuginfo.sh.
ldso_path="$(find %{glibc_sysroot}/ -maxdepth 2 -regextype posix-extended \
-regex '.*/ld(-.*|64|)\.so\.[0-9]+$' -type f | LC_ALL=C sort | head -n1)"
run_ldso="$ldso_path --library-path %{glibc_sysroot}/%{_lib}"
@ -2349,13 +2564,11 @@ if rpm.vercmp(rel, required) < 0 then
error("FATAL: kernel too old", 0)
end
%post -p <lua>
%glibc_post_funcs
-- (1) Remove multilib libraries from previous installs.
-- In order to support in-place upgrades, we must immediately remove
-- obsolete platform directories after installing a new glibc
-- all platform directories before installing a new glibc
-- version. RPM only deletes files removed by updates near the end
-- of the transaction. If we did not remove the obsolete platform
-- of the transaction. If we did not remove all platform
-- directories here, they may be preferred by the dynamic linker
-- during the execution of subsequent RPM scriptlets, likely
-- resulting in process startup failures.
@ -2428,7 +2641,9 @@ for _, rdir in ipairs (remove_dirs) do
end
end
-- (2) Update /etc/ld.so.conf
%post -p <lua>
%glibc_post_funcs
-- (1) Update /etc/ld.so.conf
-- Next we update /etc/ld.so.conf to ensure that it starts with
-- a literal "include ld.so.conf.d/*.conf".
@ -2467,7 +2682,7 @@ if posix.access (ldsoconf) then
end
end
-- (3) Rebuild ld.so.cache early.
-- (2) Rebuild ld.so.cache early.
-- If the format of the cache changes then we need to rebuild
-- the cache early to avoid any problems running binaries with
-- the new glibc.
@ -2475,7 +2690,7 @@ end
-- Note: We use _prefix because Fedora's UsrMove says so.
post_exec ("%{_prefix}/sbin/ldconfig")
-- (4) Update gconv modules cache.
-- (3) Update gconv modules cache.
-- If the /usr/lib/gconv/gconv-modules.cache exists, then update it
-- with the latest set of modules that were just installed.
-- We assume that the cache is in _libdir/gconv and called
@ -2483,7 +2698,7 @@ post_exec ("%{_prefix}/sbin/ldconfig")
update_gconv_modules_cache()
-- (5) On upgrades, restart systemd if installed. "systemctl -q" does
-- (4) On upgrades, restart systemd if installed. "systemctl -q" does
-- not suppress the error message (which is common in chroots), so
-- open-code post_exec with standard error suppressed.
if tonumber(arg[2]) >= 2
@ -2550,6 +2765,9 @@ fi
%files -f glibc.filelist
%dir %{_prefix}/%{_lib}/audit
%if %{buildpower10}
%dir /%{_libdir}/glibc-hwcaps/power10
%endif
%verify(not md5 size mtime) %config(noreplace) /etc/nsswitch.conf
%verify(not md5 size mtime) %config(noreplace) /etc/ld.so.conf
%verify(not md5 size mtime) %config(noreplace) /etc/rpc
@ -2635,9 +2853,162 @@ fi
%files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
%if %{without bootstrap}
%files -n sysroot-%{_arch}-%{sysroot_dist}-glibc
%{sysroot_prefix}
%endif
%changelog
* Tue Nov 22 2022 Florian Weimer <fweimer@redhat.com> - 2.34-40.1
- Restore IPC_64 support in sysvipc *ctl functions (#2142111)
* Wed Feb 8 2023 Florian Weimer <fweimer@redhat.com> - 2.34-60
- Upstream test for ldconfig -p (#2167811)
* Wed Feb 8 2023 Florian Weimer <fweimer@redhat.com> - 2.34-59
- Fix ldconfig -p on i686 (#2167811)
* Wed Jan 25 2023 Florian Weimer <fweimer@redhat.com> - 2.34-58
- Enhance internal tunables ABI stability (awk iteration order) (#2162962)
* Tue Jan 17 2023 Florian Weimer <fweimer@redhat.com> - 2.34-57
- Sync with upstream branch release/2.34/master,
commit 6484ae5b8c4d4314f748e4d3c9a9baa5385e57c5
- malloc: Fix -Wuse-after-free warning in tst-mallocalign1 [BZ #26779]
- s_sincosf.h: Change pio4 type to float [BZ #28713]
- math: Properly cast X_TLOSS to float [BZ #28713]
- Regenerate ulps on x86_64 with GCC 12
- Avoid -Wuse-after-free in tests [BZ #26779].
- Fix build of nptl/tst-thread_local1.cc with GCC 12
- Fix stdio-common tests for GCC 12 -Waddress
- Fix stdlib/tst-setcontext.c for GCC 12 -Warray-compare
- resolv: Avoid GCC 12 false positive warning [BZ #28439].
- intl: Avoid -Wuse-after-free [BZ #26779]
- elf: Drop elf/tls-macros.h in favor of __thread and tls_model attributes [BZ #28152] [BZ #28205]
- time: Set daylight to 1 for matching DST/offset change (RHBZ#2155352)
- elf/tst-tlsopt-powerpc fails when compiled with -mcpu=power10 (BZ# 29776)
- time: Use 64 bit time on tzfile
- nscd: Use 64 bit time_t on libc nscd routines (BZ# 29402)
- nis: Build libnsl with 64 bit time_t
- Use LFS and 64 bit time for installed programs (BZ #15333)
* Mon Dec 12 2022 Tulio Magno Quites Machado Filho <tuliom@redhat.com> - 2.34-56
- Earlier removal of alternative multilibs (#2149994)
* Mon Dec 12 2022 Tulio Magno Quites Machado Filho <tuliom@redhat.com> - 2.34-55
- Earlier removal of alternative multilibs (#2149994)
* Mon Dec 12 2022 Florian Weimer <fweimer@redhat.com> - 2.34-54
- Install kernel header files into the sysroot subpackage (#2149644)
* Wed Dec 07 2022 Arjun Shankar <arjun@redhat.com> - 2.34-53
- Sync with upstream branch release/2.34/master,
commit a4217408a3d6050a7f42ac23adb6ac7218dca85f:
- Apply asm redirections in syslog.h before first use [BZ #27087]
- _Static_assert needs two arguments for compatibility with GCC before 9
* Wed Nov 30 2022 Florian Weimer <fweimer@redhat.com> - 2.34-52
- Add noarch sysroot subpackages (#2149644)
* Tue Nov 29 2022 Florian Weimer <fweimer@redhat.com> - 2.34-51
- Prepare for integration of GCC 8 compatible _Static_assert (#2149102)
* Fri Nov 25 2022 Arjun Shankar <arjun@redhat.com> - 2.34-50
- Sync with upstream branch release/2.34/master,
commit 405b8ae13540e9fd614df614e3361ebf9abd14cf:
- elf: Fix wrong fscanf usage on tst-pldd
- Allow for unpriviledged nested containers
- elf: Fix wrong fscanf usage on tst-pldd
- x86: Fix wcsnlen-avx2 page cross length comparison [BZ #29591]
- elf: Fix rtld-audit trampoline for aarch64
* Mon Nov 14 2022 Arjun Shankar <arjun@redhat.com> - 2.34-49
- Sync with upstream branch release/2.34/master,
commit: 75b0edb7ef338084e53925139ae81fb0dfc07dd4:
- Update NEWS file in the right place
- Linux: Support __IPC_64 in sysvctl *ctl command arguments (bug 29771)
- io: Fix use-after-free in ftw [BZ #26779]
- io: Fix ftw internal realloc buffer (BZ #28126)
- regex: fix buffer read overrun in search [BZ#28470]
- regex: copy back from Gnulib
- Allow #pragma GCC in headers in conformtest
- Fix memmove call in vfprintf-internal.c:group_number
- mktime: improve heuristic for ca-1986 Indiana DST
- Makerules: fix MAKEFLAGS assignment for upcoming make-4.4 [BZ# 29564]
- linux: Fix generic struct_stat for 64 bit time (BZ# 29657)
- elf: Do not completely clear reused namespace in dlmopen (bug 29600)
- nss: Use shared prefix in IPv4 address in tst-reload1
- nss: Fix tst-nss-files-hosts-long on single-stack hosts (bug 24816)
- nss: Implement --no-addrconfig option for getent
* Thu Oct 13 2022 Arjun Shankar <arjun@redhat.com> - 2.34-48
- Handle non-hostname CNAME aliases during name resolution (#2129005)
- Sync with upstream branch release/2.34/master,
commit e3976287b22422787f3cc6fc9adda58304b55bd9:
- nscd: Drop local address tuple variable [BZ #29607]
- x86-64: Require BMI1/BMI2 for AVX2 strrchr and wcsrchr implementations
- x86-64: Require BMI2 and LZCNT for AVX2 memrchr implementation
- x86-64: Require BMI2 for AVX2 (raw|w)memchr implementations
- x86-64: Require BMI2 for AVX2 wcs(n)cmp implementations
- x86-64: Require BMI2 for AVX2 strncmp implementation
- x86-64: Require BMI2 for AVX2 strcmp implementation
- x86-64: Require BMI2 for AVX2 str(n)casecmp implementations
- x86: include BMI1 and BMI2 in x86-64-v3 level
- nptl: Add backoff mechanism to spinlock loop
- sysdeps: Add 'get_fast_jitter' interace in fast-jitter.h
- nptl: Effectively skip CAS in spinlock loop
- Move assignment out of the CAS condition
- Add LLL_MUTEX_READ_LOCK [BZ #28537]
- Avoid extra load with CAS in __pthread_mutex_clocklock_common [BZ #28537]
- Avoid extra load with CAS in __pthread_mutex_lock_full [BZ #28537]
- resolv: Fix building tst-resolv-invalid-cname for earlier C standards
- nss_dns: Rewrite _nss_dns_gethostbyname4_r using current interfaces
- resolv: Add new tst-resolv-invalid-cname
- nss_dns: In gaih_getanswer_slice, skip strange aliases (bug 12154)
(#2129005)
- nss_dns: Rewrite getanswer_r to match getanswer_ptr (bug 12154, bug 29305)
- nss_dns: Remove remnants of IPv6 address mapping
- nss_dns: Rewrite _nss_dns_gethostbyaddr2_r and getanswer_ptr
- nss_dns: Split getanswer_ptr from getanswer_r
- resolv: Add DNS packet parsing helpers geared towards wire format
- resolv: Add internal __ns_name_length_uncompressed function
- resolv: Add the __ns_samebinaryname function
- resolv: Add internal __res_binary_hnok function
- resolv: Add tst-resolv-aliases
- resolv: Add tst-resolv-byaddr for testing reverse lookup
- gconv: Use 64-bit interfaces in gconv_parseconfdir (bug 29583)
- elf: Fix hwcaps string size overestimation
- nscd: Fix netlink cache invalidation if epoll is used [BZ #29415]
- Apply asm redirections in wchar.h before first use
- Apply asm redirections in stdio.h before first use [BZ #27087]
- elf: Call __libc_early_init for reused namespaces (bug 29528)
* Tue Oct 11 2022 Florian Weimer <fweimer@redhat.com> - 2.34-47
- Simplify the glibc system call profile (#2117712)
* Tue Oct 11 2022 Florian Weimer <fweimer@redhat.com> - 2.34-46
- DSO dependency sort must put new map first even if in cycle (#2128615)
* Tue Oct 11 2022 Florian Weimer <fweimer@redhat.com> - 2.34-45
- Run tst-audit-tlsdesc{,-dlopen} on all architectures (#2118666)
* Thu Oct 06 2022 Arjun Shankar <arjun@redhat.com> - 2.34-44
- wrap-find-debuginfo.sh: Use nm --format=posix instead of --format=just-symbols
* Mon Oct 03 2022 Arjun Shankar <arjun@redhat.com> - 2.34-43
- Remove .annobin* symbols from ld.so (#2126477)
* Tue Sep 06 2022 Arjun Shankar <arjun@redhat.com> - 2.34-42
- Co-Authored-By: Benjamin Herrenschmidt <benh@amazon.com>
- Retain .gnu_debuglink section in libc.so.6 (#2090744)
- Remove redundant ld.so debuginfo file (#2090744)
* Tue Aug 23 2022 Arjun Shankar <arjun@redhat.com> - 2.34-41
- Sync with upstream branch release/2.34/master,
commit 68507377f249d165f1f35502d96e9365edb07d9a:
- socket: Check lengths before advancing pointer in CMSG_NXTHDR
- alpha: Fix generic brk system call emulation in __brk_call (bug 29490)
- stdlib: Fixup mbstowcs NULL __dst handling. [BZ #29279]
- stdlib: Remove attr_write from mbstows if dst is NULL [BZ: 29265]
- Update syscall lists for Linux 5.19
- dlfcn: Pass caller pointer to static dlopen implementation (bug 29446)
* Fri Jul 22 2022 Arjun Shankar <arjun@redhat.com> - 2.34-40
- Sync with upstream branch release/2.34/master,

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