You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
152 lines
4.2 KiB
152 lines
4.2 KiB
Rewrite of the following commit but adjusted pre-64-bit time_t
|
|
conversion. We want to follow the same upstream behaviour and return
|
|
EINVAL for unknown commands rather than to attempt the command with an
|
|
argument of {0} which has likely never been tested upstream.
|
|
|
|
commit a16d2abd496bd974a88207d5599265aae5ae4880
|
|
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
|
|
Date: Tue Sep 29 14:29:48 2020 -0300
|
|
|
|
sysvipc: Return EINVAL for invalid semctl commands
|
|
|
|
It avoids regressions on possible future commands that might require
|
|
additional libc support. The downside is new commands added by newer
|
|
kernels will need further glibc support.
|
|
|
|
Checked on x86_64-linux-gnu and i686-linux-gnu (Linux v4.15 and v5.4).
|
|
|
|
diff --git a/sysdeps/unix/sysv/linux/semctl.c b/sysdeps/unix/sysv/linux/semctl.c
|
|
index bdf31ca7747fe5a4..03c56c69a5412c82 100644
|
|
--- a/sysdeps/unix/sysv/linux/semctl.c
|
|
+++ b/sysdeps/unix/sysv/linux/semctl.c
|
|
@@ -58,6 +58,15 @@ __new_semctl (int semid, int semnum, int cmd, ...)
|
|
arg = va_arg (ap, union semun);
|
|
va_end (ap);
|
|
break;
|
|
+ case IPC_RMID: /* arg ignored. */
|
|
+ case GETNCNT:
|
|
+ case GETPID:
|
|
+ case GETVAL:
|
|
+ case GETZCNT:
|
|
+ break;
|
|
+ default:
|
|
+ __set_errno (EINVAL);
|
|
+ return -1;
|
|
}
|
|
|
|
#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
|
|
diff --git a/sysvipc/test-sysvipc.h b/sysvipc/test-sysvipc.h
|
|
new file mode 100644
|
|
index 0000000000000000..d7ed496511c10afb
|
|
--- /dev/null
|
|
+++ b/sysvipc/test-sysvipc.h
|
|
@@ -0,0 +1,85 @@
|
|
+/* Basic definition for Sysv IPC test functions.
|
|
+ Copyright (C) 2020 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 _TEST_SYSV_H
|
|
+#define _TEST_SYSV_H
|
|
+
|
|
+#include <sys/ipc.h>
|
|
+#include <sys/sem.h>
|
|
+#include <sys/msg.h>
|
|
+#include <sys/shm.h>
|
|
+#include <include/array_length.h>
|
|
+
|
|
+/* Return the first invalid command SysV IPC command from common shared
|
|
+ between message queue, shared memory, and semaphore. */
|
|
+static inline int
|
|
+first_common_invalid_cmd (void)
|
|
+{
|
|
+ const int common_cmds[] = {
|
|
+ IPC_RMID,
|
|
+ IPC_SET,
|
|
+ IPC_STAT,
|
|
+ IPC_INFO,
|
|
+ };
|
|
+
|
|
+ int invalid = 0;
|
|
+ for (int i = 0; i < array_length (common_cmds); i++)
|
|
+ {
|
|
+ if (invalid == common_cmds[i])
|
|
+ {
|
|
+ invalid++;
|
|
+ i = 0;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return invalid;
|
|
+}
|
|
+
|
|
+/* Return the first invalid command SysV IPC command for semaphore. */
|
|
+static inline int
|
|
+first_sem_invalid_cmd (void)
|
|
+{
|
|
+ const int sem_cmds[] = {
|
|
+ GETPID,
|
|
+ GETVAL,
|
|
+ GETALL,
|
|
+ GETNCNT,
|
|
+ GETZCNT,
|
|
+ SETVAL,
|
|
+ SETALL,
|
|
+ SEM_STAT,
|
|
+ SEM_INFO,
|
|
+#ifdef SEM_STAT_ANY
|
|
+ SEM_STAT_ANY,
|
|
+#endif
|
|
+ };
|
|
+
|
|
+ int invalid = first_common_invalid_cmd ();
|
|
+ for (int i = 0; i < array_length (sem_cmds); i++)
|
|
+ {
|
|
+ if (invalid == sem_cmds[i])
|
|
+ {
|
|
+ invalid++;
|
|
+ i = 0;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return invalid;
|
|
+}
|
|
+
|
|
+#endif /* _TEST_SYSV_H */
|
|
diff --git a/sysvipc/test-sysvsem.c b/sysvipc/test-sysvsem.c
|
|
index d197772917a7579d..43a1460ec2b9308f 100644
|
|
--- a/sysvipc/test-sysvsem.c
|
|
+++ b/sysvipc/test-sysvsem.c
|
|
@@ -25,6 +25,8 @@
|
|
#include <sys/ipc.h>
|
|
#include <sys/sem.h>
|
|
|
|
+#include <test-sysvipc.h>
|
|
+
|
|
#include <support/support.h>
|
|
#include <support/check.h>
|
|
#include <support/temp_file.h>
|
|
@@ -80,6 +82,9 @@ do_test (void)
|
|
FAIL_EXIT1 ("semget failed (errno=%d)", errno);
|
|
}
|
|
|
|
+ TEST_COMPARE (semctl (semid, 0, first_sem_invalid_cmd (), NULL), -1);
|
|
+ TEST_COMPARE (errno, EINVAL);
|
|
+
|
|
/* Get semaphore kernel information and do some sanity checks. */
|
|
struct semid_ds seminfo;
|
|
if (semctl (semid, 0, IPC_STAT, (union semun) { .buf = &seminfo }) == -1)
|