1/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <errno.h>
19#include <signal.h>
20
21#include <sigset-cvt-mask.h>
22
23/* Set the mask of blocked signals to MASK, returning the old mask. */
24int
25__sigsetmask (int mask)
26{
27 sigset_t set, oset;
28
29 if (sigset_set_old_mask (&set, mask) < 0)
30 return -1;
31
32 if (__sigprocmask (SIG_SETMASK, &set, &oset) < 0)
33 return -1;
34
35 return sigset_get_old_mask (&oset);
36}
37
38weak_alias (__sigsetmask, sigsetmask)
39

source code of glibc/sysdeps/posix/sigsetmask.c