commit 66bc0189d836130768df41900f3cf29723bbd870
Author: Christian Kellner <gicmo@gnome.org>
Date:   Thu May 12 10:12:54 2011 +0200

    New function to re-root a given path with a mount_prefix
    
    g_mount_info_apply_prefix will take an given path and prepend the
    mount_prefix of the given mount_info, if there is any. It will free the old
    string in this case. Otherwise it is a NOOP.

diff --git a/common/gmounttracker.c b/common/gmounttracker.c
index 9c7af7b..519cd47 100644
--- a/common/gmounttracker.c
+++ b/common/gmounttracker.c
@@ -153,6 +153,26 @@ g_mount_info_resolve_path (GMountInfo *info,
   return new_path;
 }
 
+void
+g_mount_info_apply_prefix (GMountInfo  *info,
+			   char       **path)
+{
+  GMountSpec *spec;
+
+  spec = info->mount_spec;
+
+  if (spec->mount_prefix != NULL &&
+      spec->mount_prefix[0] != 0)
+    {
+      char *path_with_prefix;
+      path_with_prefix = g_build_path ("/", spec->mount_prefix,
+                                       *path, NULL);
+      g_free (*path);
+      *path = path_with_prefix;
+    }
+
+}
+
 GMountInfo *
 g_mount_info_from_dbus (DBusMessageIter *iter)
 {
diff --git a/common/gmounttracker.h b/common/gmounttracker.h
index 4892baa..4723663 100644
--- a/common/gmounttracker.h
+++ b/common/gmounttracker.h
@@ -73,6 +73,8 @@ GMountInfo *g_mount_info_dup          (GMountInfo *info);
 void        g_mount_info_unref        (GMountInfo *info);
 const char *g_mount_info_resolve_path (GMountInfo *info,
 				       const char *path);
+void        g_mount_info_apply_prefix (GMountInfo *info,
+                                       char      **path);
 
 GMountInfo * g_mount_info_from_dbus (DBusMessageIter *iter);