| /* Copyright (C) 2002-2018 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 |
| <http://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 |
| } |