mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 13:00:06 +00:00
55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
|
|
|
|
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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <pthreadP.h>
|
|
#include <sysdep.h>
|
|
|
|
|
|
int
|
|
pthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask)
|
|
{
|
|
sigset_t local_newmask;
|
|
|
|
/* The only thing we have to make sure here is that SIGCANCEL and
|
|
SIGSETXID is not blocked. */
|
|
if (newmask != NULL
|
|
&& (__builtin_expect (__sigismember (newmask, SIGCANCEL), 0)
|
|
|| __builtin_expect (__sigismember (newmask, SIGSETXID), 0)))
|
|
{
|
|
local_newmask = *newmask;
|
|
__sigdelset (&local_newmask, SIGCANCEL);
|
|
__sigdelset (&local_newmask, SIGSETXID);
|
|
newmask = &local_newmask;
|
|
}
|
|
|
|
#ifdef INTERNAL_SYSCALL
|
|
/* We know that realtime signals are available if NPTL is used. */
|
|
INTERNAL_SYSCALL_DECL (err);
|
|
int result = INTERNAL_SYSCALL (rt_sigprocmask, err, 4, how, newmask,
|
|
oldmask, _NSIG / 8);
|
|
|
|
return (INTERNAL_SYSCALL_ERROR_P (result, err)
|
|
? INTERNAL_SYSCALL_ERRNO (result, err)
|
|
: 0);
|
|
#else
|
|
return sigprocmask (how, newmask, oldmask) == -1 ? errno : 0;
|
|
#endif
|
|
}
|