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-rw-r--r--src/sig_handlers.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/src/sig_handlers.c b/src/sig_handlers.c
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+++ b/src/sig_handlers.c
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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 <signal.h>
+
+struct sigaction original_termSa;
+
+void termSigHandler(int signal) {
+ if(signal==SIGTERM) {
+ savePlaylistState();
+ playerKill();
+ exit(0);
+ }
+}
+
+void usr1SigHandler(int signal) {
+}
+
+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);
+ sa.sa_handler = player_sigHandler;
+ sigaction(SIGCHLD,&sa,NULL);
+ sa.sa_handler = termSigHandler;
+ sigaddset(&sa.sa_mask,SIGTERM);
+ sigaction(SIGTERM,&sa,&original_termSa);
+}
+
+void finishSigHandlers() {
+ sigaction(SIGTERM,&original_termSa,NULL);
+}
+
+void blockSignals() {
+ sigset_t sset;
+
+ sigemptyset(&sset);
+ sigaddset(&sset,SIGCHLD);
+ sigaddset(&sset,SIGUSR1);
+ sigprocmask(SIG_BLOCK,&sset,NULL);
+}
+
+void unblockSignals() {
+ sigset_t sset;
+
+ sigemptyset(&sset);
+ sigaddset(&sset,SIGCHLD);
+ sigaddset(&sset,SIGUSR1);
+ sigprocmask(SIG_UNBLOCK,&sset,NULL);
+}
+
+void blockTermSignal() {
+ sigset_t sset;
+
+ sigemptyset(&sset);
+ sigaddset(&sset,SIGTERM);
+ sigprocmask(SIG_BLOCK,&sset,NULL);
+}
+
+void unblockTermSignal() {
+ sigset_t sset;
+
+ sigemptyset(&sset);
+ sigaddset(&sset,SIGTERM);
+ sigprocmask(SIG_UNBLOCK,&sset,NULL);
+}