1/* Remove SIG from the calling process' signal mask.
2 Copyright (C) 1998-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
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.
9
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.
14
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 <https://www.gnu.org/licenses/>. */
18
19#define __need_NULL
20#include <stddef.h>
21#include <signal.h>
22
23int
24sigrelse (int sig)
25{
26 sigset_t set;
27
28 sigemptyset (&set);
29 if (sigaddset (&set, sig) < 0)
30 return -1;
31 return __sigprocmask (SIG_UNBLOCK, &set, NULL);
32}
33