/* 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); }