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/* Set the disposition of SIG to SIG_IGN.
   Copyright (C) 1998 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
 
   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.
 
   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */
 
#include <errno.h>
#define __need_NULL
#include <stddef.h>
#include <signal.h>
 
int sigignore (int sig)
{
    struct sigaction act;
 
    act.sa_handler = SIG_IGN;
    if (__sigemptyset (&act.sa_mask) < 0)
	return -1;
    act.sa_flags = 0;
 
    return sigaction (sig, &act, NULL);
}