directory: don't pass "fd" to updateInit()

Again, move error handling to command.c.

src/command.c

@@ -816,9 +816,27 @@ static int listHandleUpdate(int fd,
 		nextCmd = getCommandEntryFromString(next->data, permission);
 
 	if (cmd != nextCmd) {
-		int ret = updateInit(fd, pathList);
+		int ret = updateInit(pathList);
 		freeList(pathList);
 		pathList = NULL;
+
+		switch (ret) {
+		case 0:
+			commandError(fd, ACK_ERROR_UPDATE_ALREADY,
+				     "already updating");
+			break;
+
+		case -1:
+			commandError(fd, ACK_ERROR_SYSTEM,
+				     "problems trying to update");
+			break;
+
+		default:
+			fdprintf(fd, "updating_db: %i\n", ret);
+			ret = 0;
+			break;
+		}
+
 		return ret;
 	}
 
@@ -828,15 +846,35 @@ static int listHandleUpdate(int fd,
 static int handleUpdate(int fd, mpd_unused int *permission,
 			mpd_unused int argc, char *argv[])
 {
+	int ret;
+
 	if (argc == 2) {
-		int ret;
 		List *pathList = makeList(NULL, 1);
 		insertInList(pathList, argv[1], NULL);
-		ret = updateInit(fd, pathList);
+		ret = updateInit(pathList);
 		freeList(pathList);
-		return ret;
+	} else
+		ret = updateInit(NULL);
+
+	switch (ret) {
+	case 0:
+		commandError(fd, ACK_ERROR_UPDATE_ALREADY,
+			     "already updating");
+		ret = -1;
+		break;
+
+	case -1:
+		commandError(fd, ACK_ERROR_SYSTEM,
+			     "problems trying to update");
+		break;
+
+	default:
+		fdprintf(fd, "updating_db: %i\n", ret);
+		ret = 0;
+		break;
 	}
-	return updateInit(fd, NULL);
+
+	return ret;
 }
 
 static int handleNext(mpd_unused int fd, mpd_unused int *permission,

src/directory.c

@@ -18,7 +18,6 @@
 
 #include "directory.h"
 
-#include "command.h"
 #include "conf.h"
 #include "client.h"
 #include "listen.h"
@@ -30,7 +29,6 @@
 #include "stats.h"
 #include "utils.h"
 #include "volume.h"
-#include "ack.h"
 #include "myfprintf.h"
 #include "dbUtils.h"
 #include "song_print.h"
@@ -160,12 +158,10 @@ void readDirectoryDBIfUpdateIsFinished(void)
 	}
 }
 
-int updateInit(int fd, List * pathList)
+int updateInit(List * pathList)
 {
-	if (directory_updatePid > 0) {
-		commandError(fd, ACK_ERROR_UPDATE_ALREADY, "already updating");
-		return -1;
-	}
+	if (directory_updatePid > 0)
+		return 0;
 
 	/* need to block CHLD signal, cause it can exit before we
 	   even get a chance to assign directory_updatePID */
@@ -216,8 +212,6 @@ int updateInit(int fd, List * pathList)
 	} else if (directory_updatePid < 0) {
 		unblockSignals();
 		ERROR("updateInit: Problems forking()'ing\n");
-		commandError(fd, ACK_ERROR_SYSTEM,
-			     "problems trying to update");
 		directory_updatePid = 0;
 		return -1;
 	}
@@ -228,9 +222,8 @@ int updateInit(int fd, List * pathList)
 		directory_updateJobId = 1;
 	DEBUG("updateInit: fork()'d update child for update job id %i\n",
 	      (int)directory_updateJobId);
-	fdprintf(fd, "updating_db: %i\n", (int)directory_updateJobId);
 
-	return 0;
+	return (int)directory_updateJobId;
 }
 
 static DirectoryStat *newDirectoryStat(struct stat *st)

src/directory.h

@@ -42,7 +42,12 @@ int isUpdatingDB(void);
 
 void directory_sigChldHandler(int pid, int status);
 
-int updateInit(int fd, List * pathList);
+/**
+ * Starts the tag cache update in the specified location(s).  Returns
+ * the job id on success, -1 on error or 0 if an update is already
+ * running.
+ */
+int updateInit(List * pathList);
 
 void initMp3Directory(void);