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/* the Music Player Daemon (MPD)
* (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu)
* This project's homepage is: http://www.musicpd.org
*
* 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
*/
#include "sig_handlers.h"
#include "player.h"
#include "playlist.h"
#include "directory.h"
#include <signal.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
struct sigaction original_termSa;
struct sigaction original_hupSa;
void termSigHandler(int signal) {
if(signal==SIGTERM) {
savePlaylistState();
playerKill();
exit(EXIT_SUCCESS);
}
}
void usr1SigHandler(int signal) {
}
void hupSigHandler(int signal) {
readDirectoryDB();
}
void chldSigHandler(int signal) {
int status;
int pid = wait3(&status,WNOHANG,NULL);
if(pid>0) {
player_sigChldHandler(pid,status);
directory_sigChldHandler(pid,status);
}
}
void initSigHandlers() {
struct sigaction sa;
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
sa.sa_handler = SIG_IGN;
sigaction(SIGPIPE,&sa,NULL);
sa.sa_handler = usr1SigHandler;
sigaction(SIGUSR1,&sa,NULL);
sigaddset(&sa.sa_mask,SIGTERM);
sigaddset(&sa.sa_mask,SIGHUP);
sigaddset(&sa.sa_mask,SIGCHLD);
sa.sa_handler = chldSigHandler;
sigaction(SIGCHLD,&sa,NULL);
sa.sa_handler = hupSigHandler;
sigaction(SIGHUP,&sa,&original_hupSa);
sa.sa_handler = termSigHandler;
sigaction(SIGTERM,&sa,&original_termSa);
}
void finishSigHandlers() {
sigaction(SIGHUP,&original_termSa,NULL);
sigaction(SIGTERM,&original_termSa,NULL);
}
void blockSignals() {
sigset_t sset;
sigemptyset(&sset);
sigaddset(&sset,SIGCHLD);
sigaddset(&sset,SIGUSR1);
sigaddset(&sset,SIGHUP);
sigprocmask(SIG_BLOCK,&sset,NULL);
}
void unblockSignals() {
sigset_t sset;
sigemptyset(&sset);
sigaddset(&sset,SIGCHLD);
sigaddset(&sset,SIGUSR1);
sigaddset(&sset,SIGHUP);
sigprocmask(SIG_UNBLOCK,&sset,NULL);
}
void blockTermSignal() {
sigset_t sset;
sigemptyset(&sset);
sigaddset(&sset,SIGTERM);
sigaddset(&sset,SIGHUP);
sigprocmask(SIG_BLOCK,&sset,NULL);
}
void unblockTermSignal() {
sigset_t sset;
sigemptyset(&sset);
sigaddset(&sset,SIGTERM);
sigaddset(&sset,SIGHUP);
sigprocmask(SIG_UNBLOCK,&sset,NULL);
}
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