diff -r b8bf95b39952 -r cff9c4101dd7 src/server/ucx/dlist.c
--- a/src/server/ucx/dlist.c	Sat Jan 14 13:53:44 2012 +0100
+++ b/src/server/ucx/dlist.c	Sat Jan 14 14:33:38 2012 +0100
@@ -1,5 +1,34 @@
 #include "dlist.h"
 
+UcxDlist *ucx_dlist_clone(UcxDlist *l, copy_func fnc, void *data) {
+    UcxDlist *ret = NULL;
+    while (l != NULL) {
+        if (fnc != NULL) {
+            ret = ucx_dlist_append(ret, fnc(l->data, data));
+        } else {
+            ret = ucx_dlist_append(ret, l->data);
+        }
+        l = l->next;
+    }
+    return ret;
+}
+
+int ucx_dlist_equals(UcxDlist *l1, UcxDlist *l2, cmp_func fnc, void* data) {
+    if (l1 == l2) return 1;
+    
+    while (l1 != NULL && l2 != NULL) {
+        if (fnc == NULL) {
+            if (l1->data != l2->data) return 0;
+        } else {
+            if (fnc(l1->data, l2->data, data) != 0) return 0;
+        }
+        l1 = l1->next;
+        l2 = l2->next;
+    }
+    
+    return (l1 == NULL && l2 == NULL);
+}
+
 void ucx_dlist_free(UcxDlist *l) {
     UcxDlist *e = l, *f;
     while (e != NULL) {
@@ -12,7 +41,7 @@
 UcxDlist *ucx_dlist_append(UcxDlist *l, void *data)  {
     UcxDlist *nl = (UcxDlist*) malloc(sizeof(UcxDlist));
     if (nl == NULL) return NULL;
-
+    
     nl->data = data;
     nl->next = NULL;
     if (l == NULL) {
@@ -28,7 +57,7 @@
 UcxDlist *ucx_dlist_prepend(UcxDlist *l, void *data) {
     UcxDlist *nl = ucx_dlist_append(NULL, data);
     if (nl == NULL) return NULL;
-
+    
     if (l != NULL) {
         nl->next = l;
         l->prev = nl;
@@ -49,7 +78,7 @@
 
 UcxDlist *ucx_dlist_last(UcxDlist *l) {
     if (l == NULL) return NULL;
-
+    
     UcxDlist *e = l;
     while (e->next != NULL) {
         e = e->next;
@@ -65,13 +94,13 @@
         e = e->next;
         index--;
     }
-
+    
     return index == 0 ? e : NULL;
 }
 
 size_t ucx_dlist_size(UcxDlist *l) {
     if (l == NULL) return 0;
-
+    
     UcxDlist *e = l;
     size_t s = 1;
     while (e->next != NULL) {
@@ -93,7 +122,7 @@
 /* dlist specific functions */
 UcxDlist *ucx_dlist_first(UcxDlist *l) {
     if (l == NULL) return NULL;
-
+    
     UcxDlist *e = l;
     while (e->prev != NULL) {
         e = e->prev;