[gtk+] Ensure that XDG_DATA_HOME is created before using it

[Matthias Clasen <matthiasc src gnome org>]

commit 3d7a2d788312c10c1e953cf6af794a1cc3c71e18
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Jul 4 11:41:50 2012 +0100

    Ensure that XDG_DATA_HOME is created before using it
    
    The recently-used.xbel storage for recently used files is located inside
    the $XDG_DATA_HOME directory; there's no actual guarantee that the
    directory has been created already, even though it's very highly
    probable on any modern distribution. We should create it, along with its
    intermediate parents, before constructing the file monitor that we use
    to get change notifications.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=671817
    
    https://bugzilla.gnome.org/show_bug.cgi?id=667808

 gtk/gtkrecentmanager.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkrecentmanager.c b/gtk/gtkrecentmanager.c
index 9d20011..d6b23e7 100644
--- a/gtk/gtkrecentmanager.c
+++ b/gtk/gtkrecentmanager.c
@@ -539,6 +539,18 @@ gtk_recent_manager_monitor_changed (GFileMonitor      *monitor,
 static gchar *
 get_default_filename (void)
 {
+  if (g_mkdir_with_parents (g_get_user_data_dir (), 0755) == -1)
+    {
+      int saved_errno = errno;
+
+      g_critical ("Unable to create user data directory '%s' for storing "
+                  "the recently used files list: %s",
+                  g_get_user_data_dir (),
+                  g_strerror (saved_errno));
+
+      return NULL;
+    }
+
   return g_build_filename (g_get_user_data_dir (),
                            GTK_RECENTLY_USED_FILE,
                            NULL);