b6abab343eea04fe32f413a045a2eb9cbf6047f5
diff --git a/dbus/dbus-desktop-file.c b/dbus/dbus-desktop-file.c
index 6e24136..4f17b93 100644
--- a/dbus/dbus-desktop-file.c
+++ b/dbus/dbus-desktop-file.c
@@ -45,6 +45,7 @@ struct DBusDesktopFile
   int n_sections;
   DBusDesktopFileSection *sections;
   int n_allocated_sections;
+  unsigned long mtime;
 };
 
 /**
@@ -669,6 +670,7 @@ _dbus_desktop_file_load (DBusString *filename,
       return NULL;
     }
 
+  parser.desktop_file->mtime = sb.mtime;
   parser.data = str;
   parser.line_num = 1;
   parser.pos = 0;
@@ -811,3 +813,15 @@ _dbus_desktop_file_get_section (DBusDesktopFile *desktop_file,
 
   return desktop_file->sections[i].section_name;
 }
+
+dbus_bool_t
+_dbus_desktop_file_changed (DBusDesktopFile *desktop_file,
+                            DBusString      *filename)
+{
+  DBusStat sb;
+
+  if (!_dbus_stat (filename, &sb, NULL))
+    return TRUE;
+
+  return desktop_file->mtime != sb.mtime;
+}
diff --git a/dbus/dbus-desktop-file.h b/dbus/dbus-desktop-file.h
index 27f5e53..3c61953 100644
--- a/dbus/dbus-desktop-file.h
+++ b/dbus/dbus-desktop-file.h
@@ -49,4 +49,7 @@ dbus_bool_t _dbus_desktop_file_get_string (DBusDesktopFile *desktop_file,
 const char *_dbus_desktop_file_get_section (DBusDesktopFile *desktop_file,
                                             unsigned         i);
 
+dbus_bool_t _dbus_desktop_file_changed (DBusDesktopFile *desktop_file,
+                                        DBusString      *filename);
+
 #endif /* BUS_DESKTOP_FILE_H */