diff -r 19732da2cf86 -r 3001f6523e63 lib/domain.c
--- a/lib/domain.c	Fri May 13 15:33:16 2011 +0200
+++ b/lib/domain.c	Fri May 13 15:34:20 2011 +0200
@@ -52,6 +52,13 @@
     // nothing to do
 }
 
+
+/*****************************************************************************/
+unsigned int ecrt_domain_index(ec_domain_t *domain)
+{
+    return domain->index;
+}
+
 /*****************************************************************************/
 
 int ecrt_domain_reg_pdo_entry_list(ec_domain_t *domain,