diff options
Diffstat (limited to 'libdm/datastruct/list.h')
| -rw-r--r-- | libdm/datastruct/list.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/libdm/datastruct/list.h b/libdm/datastruct/list.h index 0c6ca405..3084e88b 100644 --- a/libdm/datastruct/list.h +++ b/libdm/datastruct/list.h @@ -76,8 +76,11 @@ static inline unsigned int list_size(const struct list *head) #define list_item(v, t) \ ((t *)((uintptr_t)(v) - (uintptr_t)&((t *) 0)->list)) -/* Given a known element in a known structure, locate the struct list */ -#define list_head(v, t, e) \ - (((t *)((uintptr_t)(v) - (uintptr_t)&((t *) 0)->e))->list) +/* Given a known element in a known structure, locate another */ +#define struct_field(v, t, e, f) \ + (((t *)((uintptr_t)(v) - (uintptr_t)&((t *) 0)->e))->f) + +/* Given a known element in a known structure, locate the list head */ +#define list_head(v, t, e) struct_field(v, t, e, list) #endif |