1 files changed, 98 insertions, 0 deletions
diff --git a/release/src/router/busybox/libbb/llist.c b/release/src/router/busybox/libbb/llist.c
new file mode 100644
index 00000000..51b1ce6c
--- /dev/null
+++ b/release/src/router/busybox/libbb/llist.c
@@ -0,0 +1,98 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * linked list helper functions.
+ *
+ * Copyright (C) 2003 Glenn McGrath
+ * Copyright (C) 2005 Vladimir Oleynik
+ * Copyright (C) 2005 Bernhard Reutner-Fischer
+ * Copyright (C) 2006 Rob Landley <rob@landley.net>
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+
+#include "libbb.h"
+
+/* Add data to the start of the linked list.  */
+void FAST_FUNC llist_add_to(llist_t **old_head, void *data)
+{
+	llist_t *new_head = xmalloc(sizeof(llist_t));
+
+	new_head->data = data;
+	new_head->link = *old_head;
+	*old_head = new_head;
+}
+
+/* Add data to the end of the linked list.  */
+void FAST_FUNC llist_add_to_end(llist_t **list_head, void *data)
+{
+	while (*list_head)
+		list_head = &(*list_head)->link;
+	*list_head = xzalloc(sizeof(llist_t));
+	(*list_head)->data = data;
+	/*(*list_head)->link = NULL;*/
+}
+
+/* Remove first element from the list and return it */
+void* FAST_FUNC llist_pop(llist_t **head)
+{
+	void *data = NULL;
+	llist_t *temp = *head;
+
+	if (temp) {
+		data = temp->data;
+		*head = temp->link;
+		free(temp);
+	}
+	return data;
+}
+
+/* Unlink arbitrary given element from the list */
+void FAST_FUNC llist_unlink(llist_t **head, llist_t *elm)
+{
+	if (!elm)
+		return;
+	while (*head) {
+		if (*head == elm) {
+			*head = (*head)->link;
+			break;
+		}
+		head = &(*head)->link;
+	}
+}
+
+/* Recursively free all elements in the linked list.  If freeit != NULL
+ * call it on each datum in the list */
+void FAST_FUNC llist_free(llist_t *elm, void (*freeit) (void *data))
+{
+	while (elm) {
+		void *data = llist_pop(&elm);
+
+		if (freeit)
+			freeit(data);
+	}
+}
+
+/* Reverse list order. */
+llist_t* FAST_FUNC llist_rev(llist_t *list)
+{
+	llist_t *rev = NULL;
+
+	while (list) {
+		llist_t *next = list->link;
+
+		list->link = rev;
+		rev = list;
+		list = next;
+	}
+	return rev;
+}
+
+llist_t* FAST_FUNC llist_find_str(llist_t *list, const char *str)
+{
+	while (list) {
+		if (strcmp(list->data, str) == 0)
+			break;
+		list = list->link;
+	}
+	return list;
+}