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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 /signal
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 'signal')
-rw-r--r--signal/kill.c1
-rw-r--r--signal/sigblock.c1
-rw-r--r--signal/sigprocmask.c1
3 files changed, 3 insertions, 0 deletions
diff --git a/signal/kill.c b/signal/kill.c
index c7591b10c1e..66f85d127c3 100644
--- a/signal/kill.c
+++ b/signal/kill.c
@@ -30,4 +30,5 @@ __kill (int pid, int sig)
}
stub_warning (kill)
+libc_hidden_def (__kill)
weak_alias (__kill, kill)
diff --git a/signal/sigblock.c b/signal/sigblock.c
index a8be9dbde92..fca370a52d0 100644
--- a/signal/sigblock.c
+++ b/signal/sigblock.c
@@ -27,4 +27,5 @@ __sigblock (int mask)
}
stub_warning (sigblock)
+libc_hidden_def (__sigblock)
weak_alias (__sigblock, sigblock)
diff --git a/signal/sigprocmask.c b/signal/sigprocmask.c
index afcf5a116ee..ca9bb556b81 100644
--- a/signal/sigprocmask.c
+++ b/signal/sigprocmask.c
@@ -44,4 +44,5 @@ __sigprocmask (int how, const sigset_t *set, sigset_t *oset)
and we don't want warnings for every use of abort on
a system without safe signals. */
+libc_hidden_def (__sigprocmask)
weak_alias (__sigprocmask, sigprocmask)