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TOMOYO Linux Cross Reference
Linux/tools/firewire/list.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 struct list {
  3         struct list *next, *prev;
  4 };
  5 
  6 static inline void
  7 list_init(struct list *list)
  8 {
  9         list->next = list;
 10         list->prev = list;
 11 }
 12 
 13 static inline int
 14 list_empty(struct list *list)
 15 {
 16         return list->next == list;
 17 }
 18 
 19 static inline void
 20 list_insert(struct list *link, struct list *new_link)
 21 {
 22         new_link->prev          = link->prev;
 23         new_link->next          = link;
 24         new_link->prev->next    = new_link;
 25         new_link->next->prev    = new_link;
 26 }
 27 
 28 static inline void
 29 list_append(struct list *list, struct list *new_link)
 30 {
 31         list_insert((struct list *)list, new_link);
 32 }
 33 
 34 static inline void
 35 list_prepend(struct list *list, struct list *new_link)
 36 {
 37         list_insert(list->next, new_link);
 38 }
 39 
 40 static inline void
 41 list_remove(struct list *link)
 42 {
 43         link->prev->next = link->next;
 44         link->next->prev = link->prev;
 45 }
 46 
 47 #define list_entry(link, type, member) \
 48         ((type *)((char *)(link)-(unsigned long)(&((type *)0)->member)))
 49 
 50 #define list_head(list, type, member)           \
 51         list_entry((list)->next, type, member)
 52 
 53 #define list_tail(list, type, member)           \
 54         list_entry((list)->prev, type, member)
 55 
 56 #define list_next(elm, member)                                  \
 57         list_entry((elm)->member.next, typeof(*elm), member)
 58 
 59 #define list_for_each_entry(pos, list, member)                  \
 60         for (pos = list_head(list, typeof(*pos), member);       \
 61              &pos->member != (list);                            \
 62              pos = list_next(pos, member))
 63 
 64 

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