mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-26 12:41:05 +00:00
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/* Copyright (C) 1997-2014 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <string.h> /* Neede for string function builtin redirection. */
|
|
#include <unistd.h>
|
|
|
|
#include <sysdep.h>
|
|
#include <sys/syscall.h>
|
|
|
|
#include <kernel-features.h>
|
|
|
|
|
|
/* Get and/or change the set of blocked signals. */
|
|
int
|
|
__sigprocmask (how, set, oset)
|
|
int how;
|
|
const sigset_t *set;
|
|
sigset_t *oset;
|
|
{
|
|
#ifdef SIGCANCEL
|
|
sigset_t local_newmask;
|
|
|
|
/* The only thing we have to make sure here is that SIGCANCEL and
|
|
SIGSETXID are not blocked. */
|
|
if (set != NULL
|
|
&& (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
|
|
# ifdef SIGSETXID
|
|
|| __builtin_expect (__sigismember (set, SIGSETXID), 0)
|
|
# endif
|
|
))
|
|
{
|
|
local_newmask = *set;
|
|
__sigdelset (&local_newmask, SIGCANCEL);
|
|
# ifdef SIGSETXID
|
|
__sigdelset (&local_newmask, SIGSETXID);
|
|
# endif
|
|
set = &local_newmask;
|
|
}
|
|
#endif
|
|
|
|
return INLINE_SYSCALL (rt_sigprocmask, 4, how, set, oset, _NSIG / 8);
|
|
}
|
|
weak_alias (__sigprocmask, sigprocmask)
|