udev: hwdb - properly handle a missing database

[elogind.git] / src / libudev / libudev-device-private.c

diff --git a/src/libudev/libudev-device-private.c b/src/libudev/libudev-device-private.c
index 00fa3b88908467b0a4448a446bb31b9f937c9d9e..c123057907d20819b21dfc205aea9adb68cca3b8 100644 (file)
--- a/src/libudev/libudev-device-private.c
+++ b/src/libudev/libudev-device-private.c
@@ -1,13 +1,21 @@
-/*
- * libudev - interface to udev device information
- *
- * Copyright (C) 2008-2010 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- */
+/***
+  This file is part of systemd.
+
+  Copyright 2008-2012 Kay Sievers <kay@vrfy.org>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
 
 #include <stdlib.h>
 #include <stdio.h>
@@ -101,6 +109,7 @@ int udev_device_update_db(struct udev_device *udev_device)
         char filename[UTIL_PATH_SIZE];
         char filename_tmp[UTIL_PATH_SIZE];
         FILE *f;
+        int r;
 
         id = udev_device_get_id_filename(udev_device);
         if (id == NULL)
@@ -146,7 +155,7 @@ int udev_device_update_db(struct udev_device *udev_device)
                 }
 
                 if (udev_device_get_usec_initialized(udev_device) > 0)
-                        fprintf(f, "I:%llu\n", udev_device_get_usec_initialized(udev_device));
+                        fprintf(f, "I:%llu\n", (unsigned long long)udev_device_get_usec_initialized(udev_device));
 
                 udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) {
                         if (!udev_list_entry_get_num(list_entry))
@@ -161,7 +170,9 @@ int udev_device_update_db(struct udev_device *udev_device)
         }
 
         fclose(f);
-        rename(filename_tmp, filename);
+        r = rename(filename_tmp, filename);
+        if (r < 0)
+                return -1;
         udev_dbg(udev, "created %s file '%s' for '%s'\n", has_info ? "db" : "empty",
              filename, udev_device_get_devpath(udev_device));
         return 0;