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kamailio/signals.c

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/*
* Copyright (C) 2001-2003 FhG Fokus
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version
*
* Kamailio 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*!
* \file
* \brief Kamailio core :: Handle the signals
* \ingroup core
* Module: \ref core
*/
#include "signals.h"
#include "dprint.h"
#include <signal.h>
#include <string.h> /* memset */
#ifdef USE_SIGACTION
void (*set_sig_h(int sig, void (*handler) (int) ))(int)
{
struct sigaction act;
struct sigaction old;
memset(&act, 0, sizeof(act));
act.sa_handler=handler;
/*
sigemptyset(&act.sa_mask);
act.sa_flags=0;
*/
/* sa_sigaction not set, we use sa_hanlder instead */
return (sigaction (sig, &act, &old)==-1)?SIG_ERR:old.sa_handler;
}
#endif