database: db_init() initializes library, does not update

For updating the database, directory_update_init() should be called
explicitly.

src/database.c

@@ -22,10 +22,8 @@
 #include "directory_save.h"
 #include "song.h"
 #include "conf.h"
-#include "ls.h"
 #include "path.h"
 #include "stats.h"
-#include "update.h"
 #include "config.h"
 
 #include <glib.h>
@@ -48,13 +46,7 @@ static time_t directory_dbModTime;
 void
 db_init(void)
 {
-	unsigned ret;
-
 	music_root = directory_new("", NULL);
-
-	ret = directory_update_init(NULL);
-	if (ret == 0)
-		g_error("directory update failed");
 }
 
 void
@@ -256,6 +248,8 @@ db_load(void)
 	int foundFsCharset = 0;
 	int foundVersion = 0;
 
+	assert(music_root != NULL);
+
 	if (!music_root)
 		music_root = directory_new("", NULL);
 	while (!(fp = fopen(dbFile, "r")) && errno == EINTR) ;

src/database.h

@@ -24,12 +24,25 @@
 
 struct directory;
 
+/**
+ * Initialize the database library.
+ */
 void
 db_init(void);
 
 void
 db_finish(void);
 
+/**
+ * Clear the database.
+ */
+static inline void
+db_clear(void)
+{
+	db_finish();
+	db_init();
+}
+
 struct directory *
 db_get_root(void);
 

src/main.c

@@ -126,7 +126,11 @@ static void changeToUser(void)
 
 static void openDB(Options * options, char *argv0)
 {
+	db_init();
+
 	if (options->createDB > 0 || db_load() < 0) {
+		unsigned job;
+
 		if (options->createDB < 0) {
 			g_error("can't open db file and using "
 				"\"--no-create-db\" command line option; "
@@ -134,7 +138,12 @@ static void openDB(Options * options, char *argv0)
 		}
 		if (db_check() < 0)
 			exit(EXIT_FAILURE);
-		db_init();
+
+		db_clear();
+
+		job = directory_update_init(NULL);
+		if (job == 0)
+			g_error("directory update failed");
 	}
 }