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/* Examine and change blocked signals for a thread. Generic POSIX version.
Copyright (C) 2014-2019 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 <pthreadP.h>
#if defined SIGCANCEL || defined SIGTIMER || defined SIGSETXID
# error "This implementation assumes no internal-only signal numbers."
#endif
int
pthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask)
{
/* Here we assume that sigprocmask actually does everything right.
The only difference is the return value protocol. */
int result = sigprocmask (how, newmask, oldmask);
if (result < 0)
result = errno;
return result;
}
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