add failure handling

qnapd.c

@@ -139,6 +139,7 @@ int main(int argc, char *argv[])
 	while (1) {
 		struct lcddev *lcd = NULL;
 		struct picdev *pic = NULL;
+		int abort = 0;
 
 		do {
 			const char *devicename = config_get_string("global", "lcddevice", NULL);
@@ -149,10 +150,12 @@ int main(int argc, char *argv[])
 
 				lcd = lcd_open(devicename, lcdtimeout);
 				if (lcd == NULL) {
+					abort = 1;
 					break;
 				}
 
 				if (lcdpage_init(lcd) < 0) {
+					abort = 1;
 					break;
 				}
 			}
@@ -161,12 +164,15 @@ int main(int argc, char *argv[])
 			if (devicename != NULL) {
 				pic = pic_open(devicename, lcd);
 				if (pic == NULL) {
+					abort = 1;
 					break;
 				}
 			}
 
-			if (diskwatch_init(lcd) < 0)
+			if (diskwatch_init(lcd) < 0) {
+				abort = 1;
 				break;
+			}
 
 			/* exited on restart / SIGUSR1 */
 			event_loop(check_restart, NULL, NULL);
@@ -185,6 +191,9 @@ int main(int argc, char *argv[])
 
 		config_free();
 
+		if (abort)
+			break;
+
 		if (config_parse(config) < 0)
 			break;