summaryrefslogtreecommitdiff
path: root/libc/signal/sigaddset.c
blob: 837f653295937cde8fe106337fa6af0ef0562822 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
/* Copyright (C) 1991, 1996, 2003 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/>.  */

#define __need_NULL
#include <stddef.h>
#include <signal.h>
#include <errno.h>

/* Add SIGNO to SET.  */
int
sigaddset (sigset_t *set, int signo)
{
  if (set == NULL || signo <= 0 || signo >= NSIG)
    {
      __set_errno (EINVAL);
      return -1;
    }

  __sigaddset (set, signo);
  return 0;
}
libc_hidden_def(sigaddset)