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authorH.J. Lu <hjl.tools@gmail.com>2017-10-01 16:04:26 -0700
committerH.J. Lu <hjl.tools@gmail.com>2017-10-01 16:04:41 -0700
commit6a088436d4c04b8081e86f9e856f10fba97d0612 (patch)
tree2c229f425eba248cdc13454a71d594d237b87a81 /sysdeps/posix
parent78cf1d74d28c9312d888dea1ad3de01d38c5fc4a (diff)
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Hide internal signal functions [BZ #18822]
Hide internal signal functions to allow direct access within libc.so and
libc.a without using GOT nor PLT.

__GI___kill and __GI___sigaltstack are defined when syscalls.list is
used to generate them.  Otherwise libc_hidden_def is needed explicitly.

	[BZ #18822]
	* include/signal.h (__kill): Add libc_hidden_proto.
	(__sigblock): Likewise.
	(__sigprocmask): Likewise.
	(__sigaltstack): Likewise.
	* signal/kill.c (__kill): Add libc_hidden_def.
	* signal/sigblock.c (__sigblock): Likewise.
	* signal/sigprocmask.c (__sigprocmask): Likewise.
	* sysdeps/mach/hurd/kill.c (__kill): Likewise.
	* sysdeps/mach/hurd/sigaltstack.c (__sigaltstack): Likewise.
	* sysdeps/mach/hurd/sigprocmask.c (__sigprocmask): Likewise.
	* sysdeps/posix/sigblock.c (__sigblock): Likewise.
	* sysdeps/unix/sysv/linux/alpha/sigprocmask.c (__sigprocmask):
	Likewise.
	* sysdeps/unix/sysv/linux/ia64/sigprocmask.c (__sigprocmask):
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sigprocmask.c
	(__sigprocmask): Likewise.
	* sysdeps/unix/sysv/linux/sigprocmask.c (__sigprocmask):
	Likewise.
	* /sysdeps/unix/sysv/linux/sparc/sparc64/sigprocmask.c
	(__sigprocmask): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sigprocmask.c (__sigprocmask):
	Likewise.
Diffstat (limited to 'sysdeps/posix')
-rw-r--r--sysdeps/posix/sigblock.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/posix/sigblock.c b/sysdeps/posix/sigblock.c
index 1f8686458b..ab59f2968f 100644
--- a/sysdeps/posix/sigblock.c
+++ b/sysdeps/posix/sigblock.c
@@ -35,4 +35,5 @@ __sigblock (int mask)
   return sigset_get_old_mask (&oset);
 }
 
+libc_hidden_def (__sigblock)
 weak_alias (__sigblock, sigblock)