[linux.git] / include / asm-generic / sembuf.h

#ifndef __ASM_GENERIC_SEMBUF_H
#define __ASM_GENERIC_SEMBUF_H

#include <asm/bitsperlong.h>

/*
 * The semid64_ds structure for x86 architecture.
 * Note extra padding because this structure is passed back and forth
 * between kernel and user space.
 *
 * semid64_ds was originally meant to be architecture specific, but
 * everyone just ended up making identical copies without specific
 * optimizations, so we may just as well all use the same one.
 *
 * 64 bit architectures typically define a 64 bit __kernel_time_t,
 * so they do not need the first two padding words.
 * On big-endian systems, the padding is in the wrong place.
 *
 * Pad space is left for:
 * - 64-bit time_t to solve y2038 problem
 * - 2 miscellaneous 32-bit values
 */
struct semid64_ds {
	struct ipc64_perm sem_perm;	/* permissions .. see ipc.h */
	__kernel_time_t	sem_otime;	/* last semop time */
#if __BITS_PER_LONG != 64
	unsigned long	__unused1;
#endif
	__kernel_time_t	sem_ctime;	/* last change time */
#if __BITS_PER_LONG != 64
	unsigned long	__unused2;
#endif
	unsigned long	sem_nsems;	/* no. of semaphores in array */
	unsigned long	__unused3;
	unsigned long	__unused4;
};

#endif /* __ASM_GENERIC_SEMBUF_H */
Commit	Line	Data
2864d32b AB	1	#ifndef __ASM_GENERIC_SEMBUF_H
	2	#define __ASM_GENERIC_SEMBUF_H
	3
	4	#include <asm/bitsperlong.h>
	5
	6	/*
	7	* The semid64_ds structure for x86 architecture.
	8	* Note extra padding because this structure is passed back and forth
	9	* between kernel and user space.
	10	*
	11	* semid64_ds was originally meant to be architecture specific, but
	12	* everyone just ended up making identical copies without specific
	13	* optimizations, so we may just as well all use the same one.
	14	*
	15	* 64 bit architectures typically define a 64 bit __kernel_time_t,
	16	* so they do not need the first two padding words.
	17	* On big-endian systems, the padding is in the wrong place.
	18	*
	19	* Pad space is left for:
	20	* - 64-bit time_t to solve y2038 problem
	21	* - 2 miscellaneous 32-bit values
	22	*/
	23	struct semid64_ds {
	24	struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
	25	__kernel_time_t sem_otime; /* last semop time */
	26	#if __BITS_PER_LONG != 64
	27	unsigned long __unused1;
	28	#endif
	29	__kernel_time_t sem_ctime; /* last change time */
	30	#if __BITS_PER_LONG != 64
	31	unsigned long __unused2;
	32	#endif
	33	unsigned long sem_nsems; /* no. of semaphores in array */
	34	unsigned long __unused3;
	35	unsigned long __unused4;
	36	};
	37
	38	#endif /* __ASM_GENERIC_SEMBUF_H */