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/*
* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
*
* Copyright (c) 1997-2014 ircd-hybrid development team
*
* 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.
*
* 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.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
/*! \file ircd_signal.c
* \brief responsible for ircd's signal handling.
* \version $Id$
*/
#include "stdinc.h"
#include "ircd_signal.h"
#include "ircd.h"
#include "restart.h"
/*
* sigterm_handler - exit the server
*/
static void
sigterm_handler(int sig)
{
server_die("received signal SIGTERM", 0);
}
/*
* sighup_handler - reread the server configuration
*/
static void
sighup_handler(int sig)
{
dorehash = 1;
}
/*
* sigusr1_handler - reread the motd file
*/
static void
sigusr1_handler(int sig)
{
doremotd = 1;
}
/*
*
* inputs - nothing
* output - nothing
* side effects - Reaps zombies periodically
* -AndroSyn
*/
static void
sigchld_handler(int sig)
{
int status, errno_save = errno;
while (waitpid(-1, &status, WNOHANG) > 0)
;
errno = errno_save;
}
/*
* sigint_handler - restart the server
*/
static void
sigint_handler(int sig)
{
server_die("received signal SIGINT", !server_state.foreground);
}
/*
* setup_signals - initialize signal handlers for server
*/
void
setup_signals(void)
{
struct sigaction act;
act.sa_flags = 0;
act.sa_handler = SIG_IGN;
sigemptyset(&act.sa_mask);
#ifdef SIGXFSZ
sigaddset(&act.sa_mask, SIGXFSZ);
#endif
#ifdef SIGWINCH
sigaddset(&act.sa_mask, SIGWINCH);
#endif
#ifdef SIGTRAP
sigaddset(&act.sa_mask, SIGTRAP);
#endif
sigaddset(&act.sa_mask, SIGPIPE);
sigaddset(&act.sa_mask, SIGALRM);
sigaddset(&act.sa_mask, SIGHUP);
sigaddset(&act.sa_mask, SIGINT);
sigaddset(&act.sa_mask, SIGTERM);
sigaddset(&act.sa_mask, SIGUSR1);
sigaddset(&act.sa_mask, SIGCHLD);
#ifdef SIGXFSZ
sigaction(SIGXFSZ, &act, 0);
#endif
#ifdef SIGWINCH
sigaction(SIGWINCH, &act, 0);
#endif
#ifdef SIGTRAP
sigaction(SIGTRAP, &act, 0);
#endif
sigaction(SIGPIPE, &act, 0);
sigaction(SIGALRM, &act, 0);
act.sa_handler = sighup_handler;
sigaction(SIGHUP, &act, 0);
act.sa_handler = sigint_handler;
sigaction(SIGINT, &act, 0);
act.sa_handler = sigterm_handler;
sigaction(SIGTERM, &act, 0);
act.sa_handler = sigusr1_handler;
sigaction(SIGUSR1, &act, 0);
act.sa_handler = sigchld_handler;
sigaction(SIGCHLD, &act, 0);
sigprocmask(SIG_UNBLOCK, &act.sa_mask, NULL);
}
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