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.
91 lines
3.5 KiB
91 lines
3.5 KiB
9 months ago
|
commit 94a4e9e4f401ffe829a992820439977ead0a0ce7
|
||
|
|
Author: Florian Weimer <fweimer@redhat.com>
|
||
|
|
Date: Thu Apr 25 10:41:43 2019 +0200
|
||
|
|
|
||
|
|
Extend BIND_NOW to installed programs with --enable-bind-now
|
||
|
|
|
||
|
|
Commit 2d6ab5df3b675e96ee587ae6a8c2ce004c6b1ba9 ("Document and fix
|
||
|
|
--enable-bind-now [BZ #21015]") extended BIND_NOW to all installed
|
||
|
|
shared objects. This change also covers installed programs.
|
||
|
|
|
||
|
|
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
|
||
|
|
|
||
|
|
diff --git a/INSTALL b/INSTALL
|
||
|
|
index d6c8e899fbb47dac..d56e102ec9ed3281 100644
|
||
|
|
--- a/INSTALL
|
||
|
|
+++ b/INSTALL
|
||
|
|
@@ -169,10 +169,10 @@ if 'CFLAGS' is specified it must enable optimization. For example:
|
||
|
|
protection.
|
||
|
|
|
||
|
|
'--enable-bind-now'
|
||
|
|
- Disable lazy binding for installed shared objects. This provides
|
||
|
|
- additional security hardening because it enables full RELRO and a
|
||
|
|
- read-only global offset table (GOT), at the cost of slightly
|
||
|
|
- increased program load times.
|
||
|
|
+ Disable lazy binding for installed shared objects and programs.
|
||
|
|
+ This provides additional security hardening because it enables full
|
||
|
|
+ RELRO and a read-only global offset table (GOT), at the cost of
|
||
|
|
+ slightly increased program load times.
|
||
|
|
|
||
|
|
'--enable-pt_chown'
|
||
|
|
The file 'pt_chown' is a helper binary for 'grantpt' (*note
|
||
|
|
diff --git a/Makeconfig b/Makeconfig
|
||
|
|
index 8dc2fec9dc683416..742c0c0783a14bfa 100644
|
||
|
|
--- a/Makeconfig
|
||
|
|
+++ b/Makeconfig
|
||
|
|
@@ -398,6 +398,8 @@ endif
|
||
|
|
# test modules.
|
||
|
|
ifeq ($(bind-now),yes)
|
||
|
|
LDFLAGS-lib.so += -Wl,-z,now
|
||
|
|
+# Extra flags for dynamically linked non-test main programs.
|
||
|
|
+link-extra-flags += -Wl,-z,now
|
||
|
|
endif
|
||
|
|
|
||
|
|
# Command to run after every final link (executable or shared object).
|
||
|
|
@@ -426,7 +428,7 @@ ifndef +link-pie
|
||
|
|
$(link-extra-libs)
|
||
|
|
+link-pie-after-libc = $(+postctorS) $(+postinit)
|
||
|
|
define +link-pie
|
||
|
|
-$(+link-pie-before-libc) $(rtld-LDFLAGS) $(link-libc) $(+link-pie-after-libc)
|
||
|
|
+$(+link-pie-before-libc) $(rtld-LDFLAGS) $(link-extra-flags) $(link-libc) $(+link-pie-after-libc)
|
||
|
|
$(call after-link,$@)
|
||
|
|
endef
|
||
|
|
define +link-pie-tests
|
||
|
|
@@ -454,7 +456,7 @@ ifndef +link-static
|
||
|
|
$(link-extra-libs-static)
|
||
|
|
+link-static-after-libc = $(+postctorT) $(+postinit)
|
||
|
|
define +link-static
|
||
|
|
-$(+link-static-before-libc) $(link-libc-static) $(+link-static-after-libc)
|
||
|
|
+$(+link-static-before-libc) $(link-extra-flags) $(link-libc-static) $(+link-static-after-libc)
|
||
|
|
$(call after-link,$@)
|
||
|
|
endef
|
||
|
|
define +link-static-tests
|
||
|
|
@@ -485,7 +487,7 @@ else # not build-pie-default
|
||
|
|
$(link-extra-libs)
|
||
|
|
+link-after-libc = $(+postctor) $(+postinit)
|
||
|
|
define +link
|
||
|
|
-$(+link-before-libc) $(rtld-LDFLAGS) $(link-libc) $(+link-after-libc)
|
||
|
|
+$(+link-before-libc) $(rtld-LDFLAGS) $(link-extra-flags) $(link-libc) $(+link-after-libc)
|
||
|
|
$(call after-link,$@)
|
||
|
|
endef
|
||
|
|
define +link-tests
|
||
|
|
diff --git a/manual/install.texi b/manual/install.texi
|
||
|
|
index e757891dc2eebb2e..351d67c68b255f62 100644
|
||
|
|
--- a/manual/install.texi
|
||
|
|
+++ b/manual/install.texi
|
||
|
|
@@ -199,10 +199,10 @@ number of routines called directly from assembler are excluded from this
|
||
|
|
protection.
|
||
|
|
|
||
|
|
@item --enable-bind-now
|
||
|
|
-Disable lazy binding for installed shared objects. This provides
|
||
|
|
-additional security hardening because it enables full RELRO and a
|
||
|
|
-read-only global offset table (GOT), at the cost of slightly increased
|
||
|
|
-program load times.
|
||
|
|
+Disable lazy binding for installed shared objects and programs. This
|
||
|
|
+provides additional security hardening because it enables full RELRO
|
||
|
|
+and a read-only global offset table (GOT), at the cost of slightly
|
||
|
|
+increased program load times.
|
||
|
|
|
||
|
|
@pindex pt_chown
|
||
|
|
@findex grantpt
|