From: David Zeuthen <davidz@redhat.com>
Date: Tue, 29 Nov 2011 21:59:33 +0000 (-0500)
Subject: Don't cleanup loop devices if backing device has major 0
X-Git-Tag: upstream/2.1.2~383
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b06dcbb4927b7eb11ad150ee4df4489c46342606;p=platform%2Fupstream%2Fudisks2.git

Don't cleanup loop devices if backing device has major 0

E.g. NFS mounts.

Signed-off-by: David Zeuthen <davidz@redhat.com>
---

diff --git a/src/udiskscleanup.c b/src/udiskscleanup.c
index 12a1781..cbdfe1d 100644
--- a/src/udiskscleanup.c
+++ b/src/udiskscleanup.c
@@ -1411,7 +1411,6 @@ udisks_cleanup_check_loop_entry (UDisksCleanup  *cleanup,
   const gchar *backing_file;
   dev_t backing_file_device;
   GUdevClient *udev_client;
-  GUdevDevice *udev_backing_file_device;
   struct stat loop_device_statbuf;
   gint loop_device_fd;
   struct loop_info64 li64;
@@ -1487,22 +1486,36 @@ udisks_cleanup_check_loop_entry (UDisksCleanup  *cleanup,
     }
   is_setup = TRUE;
 
-  udev_backing_file_device = g_udev_client_query_by_device_number (udev_client,
-                                                                   G_UDEV_DEVICE_TYPE_BLOCK,
-                                                                   backing_file_device);
-  if (udev_backing_file_device != NULL)
+  /* Check if device exists... */
+  if (major (backing_file_device) == 0)
     {
-      GList *mounts;
-      /* Figure out if still mounted */
-      mounts = udisks_mount_monitor_get_mounts_for_dev (monitor, backing_file_device);
-      if (mounts != NULL)
+      /* major==0 -> not regular block device ... could be e.g. NFS ...
+       * for now, just assume it's still there and mounted
+       */
+      has_backing_device = TRUE;
+      backing_device_mounted = TRUE;
+    }
+  else
+    {
+      GUdevDevice *udev_backing_file_device;
+      /* check with udev if the backing device exists and is still mounted */
+      udev_backing_file_device = g_udev_client_query_by_device_number (udev_client,
+                                                                       G_UDEV_DEVICE_TYPE_BLOCK,
+                                                                       backing_file_device);
+      if (udev_backing_file_device != NULL)
         {
-          backing_device_mounted = TRUE;
+          GList *mounts;
+
+          has_backing_device = TRUE;
+          g_object_unref (udev_backing_file_device);
+
+          /* and if it's still mounted */
+          mounts = udisks_mount_monitor_get_mounts_for_dev (monitor, backing_file_device);
+          if (mounts != NULL)
+            backing_device_mounted = TRUE;
+          g_list_foreach (mounts, (GFunc) g_object_unref, NULL);
+          g_list_free (mounts);
         }
-      g_list_foreach (mounts, (GFunc) g_object_unref, NULL);
-      g_list_free (mounts);
-      has_backing_device = TRUE;
-      g_object_unref (udev_backing_file_device);
     }
 
   /* OK, entry is valid - keep it around */