+/**
+ * po_dup - duplicate an existing list of options
+ * @options: pointer to mount options
+ *
+ */
+struct mount_options *po_dup(struct mount_options *source)
+{
+ struct mount_options *target;
+ struct mount_option *current;
+
+ if (!source)
+ return NULL;
+
+ target = options_create();
+ if (options_empty(source) || target == NULL)
+ return target;
+
+ current = source->head;
+ while (target->count < source->count) {
+ struct mount_option *option;
+
+ option = option_dup(current);
+ if (!option) {
+ po_destroy(target);
+ return NULL;
+ }
+
+ options_tail_insert(target, option);
+ current = current->next;
+ }
+
+ return target;
+}
+