import from SF CVS

git-svn-id: https://svn.musicpd.org/mpd/trunk@1 09075e82-0dd4-0310-85a5-a0d7c8717e4f

1 files changed, 90 insertions, 0 deletions

diff --git a/src/sig_handlers.c b/src/sig_handlers.c
new file mode 100644
index 000000000..896ea0b31
--- /dev/null
+++ b/src/sig_handlers.c
@@ -0,0 +1,90 @@
+/* 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);
+}