+extern gboolean GetDiskFreeSpaceEx(const gunichar2 *path_name, WapiULargeInteger *free_bytes_avail,
+ WapiULargeInteger *total_number_of_bytes,
+ WapiULargeInteger *total_number_of_free_bytes);
+extern guint32 GetDriveType(const gunichar2 *root_path_name);