--- a/master/sdo_request.h	Mon Oct 18 10:30:57 2010 +0200
+++ b/master/sdo_request.h	Mon Oct 18 10:45:07 2010 +0200
@@ -64,6 +64,7 @@
     unsigned long jiffies_start; /**< Jiffies, when the request was issued. */
     unsigned long jiffies_sent; /**< Jiffies, when the upload/download
                                      request was sent. */
+    int errno; /**< Error number. */
     uint32_t abort_code; /**< SDO request abort code. Zero on success. */
 };