add --only-create-db option from msells

have SIGHUP cause rereading db file

git-svn-id: https://svn.musicpd.org/mpd/trunk@663 09075e82-0dd4-0310-85a5-a0d7c8717e4f

src/directory.c

@@ -473,7 +473,7 @@ void readDirectoryInfo(FILE * fp,Directory * directory) {
 				nextDirNode = nodeTemp;
 			}
 
-			if(!nextDirNode) {
+			if(NULL==nextDirNode) {
 				subDirectory = newDirectory(directory,name,
 						mtime);
 				insertInList(directory->subDirectories,key,

src/list.c

@@ -88,6 +88,9 @@ int insertInListBeforeNode(List * list, ListNode * beforeNode, char * key,
 	}
 	else {
 		node->prevNode = beforeNode->prevNode;
+		if(node->prevNode) {
+			node->prevNode->nextNode = node;
+		}
 		beforeNode->prevNode = node;
 	}
 	

src/main.c

@@ -58,6 +58,7 @@ typedef struct _Options {
         char * dbFile;
         int daemon;
         int createDB;
+	int onlyCreateDB;
 } Options;
 
 void usage(char * argv[]) {
@@ -72,6 +73,7 @@ void usage(char * argv[]) {
         ERROR("   --help             this usage statement\n");
         ERROR("   --no-daemon        don't detach from console\n");
         ERROR("   --create-db        force (re)creation database\n");
+        ERROR("   --only-create-db   create database and exit\n");
         ERROR("   --no-create-db     don't create database\n");
         ERROR("   --verbose          verbose logging\n");
         ERROR("   --version          prints version information\n");
@@ -91,6 +93,7 @@ void parseOptions(int argc, char ** argv, Options * options) {
         options->usr = NULL;
         options->daemon = 1;
         options->createDB = 0;
+        options->onlyCreateDB = 0;
         options->dbFile = NULL;
 
         if(argc>1) {
@@ -109,6 +112,10 @@ void parseOptions(int argc, char ** argv, Options * options) {
                                         options->createDB = 1;
                                         argcLeft--;
                                 }
+                                else if(strcmp(argv[i],"--only-create-db")==0) {
+                                        options->onlyCreateDB = 1;
+                                        argcLeft--;
+                                }
                                 else if(strcmp(argv[i],"--no-create-db")==0) {
                                         options->createDB = -1;
                                         argcLeft--;
@@ -210,7 +217,7 @@ int main(int argc, char * argv[]) {
                 return EXIT_FAILURE;
         }
 
-        if((listenSocket = establish(port))<0) {
+        if(!options.onlyCreateDB && (listenSocket = establish(port))<0) {
                 ERROR("error binding port\n");
                 return EXIT_FAILURE;
         }
@@ -340,7 +347,8 @@ int main(int argc, char * argv[]) {
 		strncpy(directorydb,options.dbFile,MAXPATHLEN);
 		directorydb[MAXPATHLEN] = '\0';
 	}
-        if(options.createDB>0 || readDirectoryDB()<0) {
+        if(options.createDB>0 || options.onlyCreateDB || readDirectoryDB()<0) 
+	{
                 if(options.createDB<0) {
                         ERROR("can't open db file and using \"--no-create-db\""
                                         " command line option\n");
@@ -351,6 +359,7 @@ int main(int argc, char * argv[]) {
                         ERROR("problem opening db for reading or writing\n");
                         exit(EXIT_FAILURE);
                 }
+		if(options.onlyCreateDB) exit(EXIT_SUCCESS);
         }
 
         initCommands();

src/player.c

@@ -103,6 +103,7 @@ int playerInit() {
 
 		sa.sa_handler = SIG_IGN;
 		sigaction(SIGPIPE,&sa,NULL);
+		sigaction(SIGHUP,&sa,NULL);
 		sa.sa_handler = decodeSigHandler;
 		sigaction(SIGCHLD,&sa,NULL);
 		sigaction(SIGTERM,&sa,NULL);

src/sig_handlers.c

@@ -19,10 +19,12 @@
 #include "sig_handlers.h"
 #include "player.h"
 #include "playlist.h"
+#include "directory.h"
 
 #include <signal.h>
 
 struct sigaction original_termSa;
+struct sigaction original_hupSa;
 
 void termSigHandler(int signal) {
 	if(signal==SIGTERM) {
@@ -35,6 +37,10 @@ void termSigHandler(int signal) {
 void usr1SigHandler(int signal) {
 }
 
+void hupSigHandler(int signal) {
+	readDirectoryDB();
+}
+
 void initSigHandlers() {
 	struct sigaction sa;
 
@@ -46,12 +52,15 @@ void initSigHandlers() {
 	sigaction(SIGUSR1,&sa,NULL);
 	sa.sa_handler = player_sigHandler;
 	sigaction(SIGCHLD,&sa,NULL);
+	sa.sa_handler = hupSigHandler;
+	sigaction(SIGHUP,&sa,&original_hupSa);
 	sa.sa_handler = termSigHandler;
-	sigaddset(&sa.sa_mask,SIGTERM);
+	/*sigaddset(&sa.sa_mask,SIGTERM);*/
 	sigaction(SIGTERM,&sa,&original_termSa);
 }
 
 void finishSigHandlers() {
+	sigaction(SIGHUP,&original_termSa,NULL);
 	sigaction(SIGTERM,&original_termSa,NULL);
 }
 

src/song.c

@@ -191,9 +191,9 @@ void insertSongIntoList(SongList * list, ListNode ** nextSongNode, char * key,
 			tempSong->tag = song->tag;
 			tempSong->mtime = song->mtime;
 			song->tag = NULL;
-			freeJustSong(song);
 			addSongToTables(tempSong);
 		}
+		freeJustSong(song);
 		*nextSongNode = (*nextSongNode)->nextNode;
 	}
 	else {