new setSigHandlersForDecoder() function, and be sure player/decode processes ignore SIGHUP signals

git-svn-id: https://svn.musicpd.org/mpd/trunk@2492 09075e82-0dd4-0310-85a5-a0d7c8717e4f

TODO

@@ -11,10 +11,6 @@
 	*) command for displaying playlist contents
 	*) command for appending to playlist
 
-*) use getaddrinfo instead of gethostbyname (check libshout)
-
-*) have children ignore SIGHUP
-
 *) put more debugging info when failing to read/write db and other similar 
 	errors
 

src/player.c

@@ -105,20 +105,12 @@ int playerInit() {
 	player_pid = fork();
 	if(player_pid==0) {
 		PlayerControl * pc = &(getPlayerData()->playerControl);
-		struct sigaction sa;
 
 		clearUpdatePid();
 
 		unblockSignals();
 
-		sa.sa_flags = 0;
-		sigemptyset(&sa.sa_mask);
-
-		finishSigHandlers();
-		sa.sa_handler = decodeSigHandler;
-		while(sigaction(SIGCHLD,&sa,NULL)<0 && errno==EINTR);
-		while(sigaction(SIGTERM,&sa,NULL)<0 && errno==EINTR);
-		while(sigaction(SIGINT,&sa,NULL)<0 && errno==EINTR);
+		setSigHandlersForDecoder();
 
 		while(close(listenSocket)<0 && errno==EINTR);
 		freeAllInterfaces();

src/sig_handlers.c

@@ -25,6 +25,7 @@
 #include "signal_check.h"
 #include "log.h"
 #include "player.h"
+#include "decode.h"
 
 #include <signal.h>
 #include <sys/types.h>
@@ -89,6 +90,21 @@ void finishSigHandlers() {
         signal_unhandle(SIGHUP);
 }
 
+void setSigHandlersForDecoder() {
+	struct sigaction sa;
+
+	finishSigHandlers();
+
+	sa.sa_flags = 0;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_handler = SIG_IGN;
+	while(sigaction(SIGHUP,&sa,NULL)<0 && errno==EINTR);
+	sa.sa_handler = decodeSigHandler;
+	while(sigaction(SIGCHLD,&sa,NULL)<0 && errno==EINTR);
+	while(sigaction(SIGTERM,&sa,NULL)<0 && errno==EINTR);
+	while(sigaction(SIGINT,&sa,NULL)<0 && errno==EINTR);
+}
+
 void ignoreSignals() {
 	struct sigaction sa;
 

src/sig_handlers.h

@@ -27,6 +27,8 @@ void initSigHandlers();
 
 void finishSigHandlers();
 
+void setSigHandlersForDecoder();
+
 void ignoreSignals();
 
 void blockSignals();