Index: uspace/lib/libc/generic/adt/hash_table.c
===================================================================
--- uspace/lib/libc/generic/adt/hash_table.c	(revision 4b995b928b92b05c010dd867dc13735846a46649)
+++ uspace/lib/libc/generic/adt/hash_table.c	(revision 203a0901aaf89da1f59fc324dbbee2c5b07eeed0)
@@ -193,4 +193,24 @@
 }
 
+/** Apply fucntion to all items in hash table.
+ *
+ * @param h		Hash table.
+ * @param f		Function to be applied.
+ * @param arg		Argument to be passed to the function.
+ */
+void
+hash_table_apply(hash_table_t *h, void (*f)(link_t *, void *), void *arg)
+{
+	hash_index_t bucket;
+	link_t *cur;
+
+	for (bucket = 0; bucket < h->entries; bucket++) {
+		for (cur = h->entry[bucket].next; cur != &h->entry[bucket];
+		    cur = cur->next) {
+			f(cur, arg);
+		}
+	}
+}
+
 /** @}
  */
Index: uspace/lib/libc/include/adt/hash_table.h
===================================================================
--- uspace/lib/libc/include/adt/hash_table.h	(revision 4b995b928b92b05c010dd867dc13735846a46649)
+++ uspace/lib/libc/include/adt/hash_table.h	(revision 203a0901aaf89da1f59fc324dbbee2c5b07eeed0)
@@ -88,4 +88,6 @@
 extern void hash_table_remove(hash_table_t *, unsigned long [], hash_count_t);
 extern void hash_table_destroy(hash_table_t *);
+extern void hash_table_apply(hash_table_t *, void (*)(link_t *, void *),
+    void *);
 
 #endif