1/* Set the disposition of SIG to SIG_IGN.
2 Copyright (C) 1998-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20#include <errno.h>
21#define __need_NULL
22#include <stddef.h>
23#include <signal.h>
24#include <string.h> /* For the real memset prototype. */
25#include <sigsetops.h>
26
27int
28sigignore (int sig)
29{
30 struct sigaction act;
31
32 act.sa_handler = SIG_IGN;
33 __sigemptyset (&act.sa_mask);
34 act.sa_flags = 0;
35
36 return __sigaction (sig, &act, NULL);
37}
38