[CLEANUP] renamed include/haproxy to include/common
diff --git a/include/common/list.h b/include/common/list.h
new file mode 100644
index 0000000..4537d8d
--- /dev/null
+++ b/include/common/list.h
@@ -0,0 +1,84 @@
+/*
+ This File is copied from
+
+ http://www.oreilly.com/catalog/masteralgoc/index.html
+ Mastering Algorithms with C
+ By Kyle Loudon
+ ISBN: 1-56592-453-3
+ Publishd by O'Reilly
+
+ */
+
+/*****************************************************************************
+* *
+* -------------------------------- list.h -------------------------------- *
+* *
+*****************************************************************************/
+
+#ifndef _COMMON_LIST_H
+#define _COMMON_LIST_H
+
+#include <stdlib.h>
+
+/*****************************************************************************
+ * *
+ * Define a structure for linked list elements. *
+ * *
+ *****************************************************************************/
+
+typedef struct ListElmt_ {
+ void *data;
+ struct ListElmt_ *next;
+} ListElmt;
+
+/*****************************************************************************
+ * *
+ * Define a structure for linked lists. *
+ * *
+ *****************************************************************************/
+
+typedef struct List_ {
+ int size;
+ int (*match)(const void *key1, const void *key2);
+ void (*destroy)(void *data);
+
+ ListElmt *head;
+ ListElmt *tail;
+} List;
+
+/*****************************************************************************
+ * *
+ * --------------------------- Public Interface --------------------------- *
+ * *
+ *****************************************************************************/
+
+void list_init(List *list, void (*destroy)(void *data));
+
+void list_destroy(List *list);
+
+int list_ins_next(List *list, ListElmt *element, const void *data);
+
+int list_rem_next(List *list, ListElmt *element, void **data);
+
+#define list_size(list) ((list)->size)
+
+#define list_head(list) ((list)->head)
+
+#define list_tail(list) ((list)->tail)
+
+#define list_is_head(list, element) ((element) == (list)->head ? 1 : 0)
+
+#define list_is_tail(element) ((element)->next == NULL ? 1 : 0)
+
+#define list_data(element) ((element)->data)
+
+#define list_next(element) ((element)->next)
+
+#endif /* _COMMON_LIST_H */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ */