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55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/* Copyright (C) 2002-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <signal.h>
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#include <pthreadP.h>
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#include <sysdep.h>
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int
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pthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask)
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{
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sigset_t local_newmask;
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/* The only thing we have to make sure here is that SIGCANCEL and
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SIGSETXID is not blocked. */
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if (newmask != NULL
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&& (__builtin_expect (__sigismember (newmask, SIGCANCEL), 0)
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|| __builtin_expect (__sigismember (newmask, SIGSETXID), 0)))
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{
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local_newmask = *newmask;
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__sigdelset (&local_newmask, SIGCANCEL);
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__sigdelset (&local_newmask, SIGSETXID);
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newmask = &local_newmask;
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}
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#ifdef INTERNAL_SYSCALL
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/* We know that realtime signals are available if NPTL is used. */
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INTERNAL_SYSCALL_DECL (err);
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int result = INTERNAL_SYSCALL (rt_sigprocmask, err, 4, how, newmask,
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oldmask, _NSIG / 8);
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return (INTERNAL_SYSCALL_ERROR_P (result, err)
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? INTERNAL_SYSCALL_ERRNO (result, err)
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: 0);
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#else
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return sigprocmask (how, newmask, oldmask) == -1 ? errno : 0;
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#endif
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}
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