40 lines
827 B
C
40 lines
827 B
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef _LINUX_STDDEF_H
|
||
|
|
#define _LINUX_STDDEF_H
|
||
|
|
|
||
|
|
#include <uapi/linux/stddef.h>
|
||
|
|
|
||
|
|
#undef NULL
|
||
|
|
#define NULL ((void *)0)
|
||
|
|
|
||
|
|
enum {
|
||
|
|
false = 0,
|
||
|
|
true = 1
|
||
|
|
};
|
||
|
|
|
||
|
|
#undef offsetof
|
||
|
|
#ifdef __compiler_offsetof
|
||
|
|
#define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER)
|
||
|
|
#else
|
||
|
|
#define offsetof(TYPE, MEMBER) ((size_t)&((TYPE *)0)->MEMBER)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/**
|
||
|
|
* sizeof_field(TYPE, MEMBER)
|
||
|
|
*
|
||
|
|
* @TYPE: The structure containing the field of interest
|
||
|
|
* @MEMBER: The field to return the size of
|
||
|
|
*/
|
||
|
|
#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
|
||
|
|
|
||
|
|
/**
|
||
|
|
* offsetofend(TYPE, MEMBER)
|
||
|
|
*
|
||
|
|
* @TYPE: The type of the structure
|
||
|
|
* @MEMBER: The member within the structure to get the end offset of
|
||
|
|
*/
|
||
|
|
#define offsetofend(TYPE, MEMBER) \
|
||
|
|
(offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER))
|
||
|
|
|
||
|
|
#endif
|