--- src/fuser.c
+++ src/fuser.c	2008-09-01 15:03:05.054239318 +0200
@@ -925,8 +925,10 @@ int main(int argc, char *argv[])
 			continue;
 		}
 
-		scan_mount_devices(opts, &mount_devices);
-		fill_unix_cache(&unixsockets);
+		if (!mount_devices)
+			scan_mount_devices(opts, &mount_devices);
+		if (!unixsockets)
+			fill_unix_cache(&unixsockets);
 
 		/* File specifications */
 		if ( (this_name = malloc(sizeof(struct names))) == NULL)
@@ -1306,6 +1308,7 @@ void fill_unix_cache(struct unixsocket_l
 		*unixsocket_head = newsocket;
 	} /* while */
 
+	fclose(fp);
 }
 
 /*