/include/linux/stddef.h

 1#ifndef _LINUX_STDDEF_H
 2#define _LINUX_STDDEF_H
 3
 4#include <linux/compiler.h>
 5
 6#ifdef __KERNEL__
 7
 8#undef NULL
 9#define NULL ((void *)0)
10
11enum {
12	false	= 0,
13	true	= 1
14};
15
16#undef offsetof
17#ifdef __compiler_offsetof
18#define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
19#else
20#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
21#endif
22#endif /* __KERNEL__ */
23
24#endif