sysdeps/posix/sigignore.c

   1 /* Set the disposition of SIG to SIG_IGN.
   2    Copyright (C) 1998-2024 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 #include <errno.h>
  20 #define __need_NULL
  21 #include <stddef.h>
  22 #include <signal.h>
  23 #include <string.h>     /* For the real memset prototype.  */
  24 #include <sigsetops.h>
  25
  26 int
  27 sigignore (int sig)
  28 {
  29   struct sigaction act;
  30
  31   act.sa_handler = SIG_IGN;
  32   __sigemptyset (&act.sa_mask);
  33   act.sa_flags = 0;
  34
  35   return __sigaction (sig, &act, NULL);
  36 }