list.h

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#ifndef __LIST_H__

#define __LIST_H__

struct list_head {
	struct list_head *next, *prev;
};

#define LIST_HEAD_INIT(name) { &(name), &(name) }

#define LIST_HEAD(name) \
	struct list_head name = LIST_HEAD_INIT(name)
	
#define INIT_LIST_HEAD(ptr) do { \
	(ptr)->next = (ptr); (ptr)->prev = (ptr); \
} while (0)	

void __list_add(struct list_head * new,
	struct list_head * prev,
	struct list_head * next);
	
void list_add(struct list_head *new, struct list_head *head);

void list_add_tail(struct list_head *new, 
	struct list_head *head);
	
void __list_del(struct list_head * prev,
	  struct list_head * next);
	  
void list_del(struct list_head *entry);	  

void list_del_init(struct list_head *entry);

int list_empty(struct list_head *head);

void list_splice(struct list_head *list, 
	struct list_head *head);
	
#define list_entry(ptr, type, member) \
	((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))	
	
#define list_for_each(pos, head) \
	for (pos = (head)->next; pos != (head); \
		pos = pos->next)
        	
#define list_for_each_safe(pos, n, head) \
	for (pos = (head)->next, n = pos->next; pos != (head); \
		pos = n, n = pos->next)

#endif