From 6a088436d4c04b8081e86f9e856f10fba97d0612 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Sun, 1 Oct 2017 16:04:26 -0700 Subject: 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. --- sysdeps/mach/hurd/kill.c | 1 + sysdeps/mach/hurd/sigaltstack.c | 1 + sysdeps/mach/hurd/sigprocmask.c | 1 + 3 files changed, 3 insertions(+) (limited to 'sysdeps/mach') diff --git a/sysdeps/mach/hurd/kill.c b/sysdeps/mach/hurd/kill.c index 2d556dd2ff..5360bb52c5 100644 --- a/sysdeps/mach/hurd/kill.c +++ b/sysdeps/mach/hurd/kill.c @@ -146,4 +146,5 @@ __kill (pid_t pid, int sig) return delivered ? 0 : __hurd_fail (err ?: ESRCH); } +libc_hidden_def (__kill) weak_alias (__kill, kill) diff --git a/sysdeps/mach/hurd/sigaltstack.c b/sysdeps/mach/hurd/sigaltstack.c index 4fba69e766..3fde510e23 100644 --- a/sysdeps/mach/hurd/sigaltstack.c +++ b/sysdeps/mach/hurd/sigaltstack.c @@ -57,4 +57,5 @@ __sigaltstack (const stack_t *argss, stack_t *oss) return 0; } +libc_hidden_def (__sigaltstack) weak_alias (__sigaltstack, sigaltstack) diff --git a/sysdeps/mach/hurd/sigprocmask.c b/sysdeps/mach/hurd/sigprocmask.c index a4ebe580ff..70b9a10a7b 100644 --- a/sysdeps/mach/hurd/sigprocmask.c +++ b/sysdeps/mach/hurd/sigprocmask.c @@ -80,4 +80,5 @@ __sigprocmask (int how, const sigset_t *set, sigset_t *oset) return 0; } +libc_hidden_def (__sigprocmask) weak_alias (__sigprocmask, sigprocmask) -- cgit 1.4.1