You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
itund/signals.c

117 lines
2.2 KiB

/*
* Signal handling functions
*
* Copyright 2004 SYSGO Real-Time Solutions AG
* Klein-Winternheim, Germany
* All rights reserved.
*
* Author: Armin Schindler <armin.schindler@sysgo.com>
*
* $Id$
*
* This program 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. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <isdntun.h>
int Terminate = 0;
int Hupsignal = 0;
int Dialsignal = 0;
/*
* SIGTERM signal handler
*/
static void sig_term(int sig)
{
dbglog("Got signal TERM/INT");
Terminate = 1;
status = EXIT_USER_REQUEST;
}
/*
* SIGHUP signal handler
*/
static void sig_hup(int sig)
{
dbglog("Got signal HUP");
Hupsignal = 1;
}
/*
* SIGUSR1 signal handler
*/
static void sig_usr1(int sig)
{
dbglog("Got signal USR1");
Dialsignal = 1;
}
/*
* SIGUSR2 signal handler
*/
static void sig_usr2(int sig)
{
dbglog("Got signal USR2");
}
/*
* SIGCHLD
*/
static void sig_chld(int sig)
{
dbglog("Got signal CHLD");
}
/*
* setup the signal handlers
*/
void signal_setup(void)
{
sigset_t mask;
struct sigaction sa;
sigemptyset(&mask);
sigaddset(&mask,SIGHUP);
sigaddset(&mask,SIGTERM);
sigaddset(&mask,SIGINT);
sigaddset(&mask,SIGUSR1);
sigaddset(&mask,SIGUSR2);
sigaddset(&mask,SIGCHLD);
#define SIGNAL(s, handler) { \
sa.sa_handler = handler; \
if (sigaction(s, &sa , NULL) < 0) { \
fatal("ERROR setting up the signal handlers"); \
exit(-2); \
} \
}
sa.sa_mask = mask;
sa.sa_flags = 0;
SIGNAL(SIGHUP, sig_hup);
SIGNAL(SIGTERM, sig_term);
SIGNAL(SIGINT, sig_term);
SIGNAL(SIGUSR1, sig_usr1);
SIGNAL(SIGUSR2, sig_usr2);
SIGNAL(SIGCHLD, sig_chld);
}