Add jmp_buf-macros.h
[glibc.git] / nptl / pthread_sigmask.c
blob56a0ecc3967beb98f348cae09fafeb0a7181ff9f
1 /* Examine and change blocked signals for a thread. Generic POSIX version.
2 Copyright (C) 2014-2017 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
19 #include <errno.h>
20 #include <signal.h>
21 #include <pthreadP.h>
23 #if defined SIGCANCEL || defined SIGTIMER || defined SIGSETXID
24 # error "This implementation assumes no internal-only signal numbers."
25 #endif
27 int
28 pthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask)
30 /* Here we assume that sigprocmask actually does everything right.
31 The only difference is the return value protocol. */
32 int result = sigprocmask (how, newmask, oldmask);
33 if (result < 0)
34 result = errno;
35 return result;