[net-next-2.6.git] / include / asm-generic / shmbuf.h

#ifndef __ASM_GENERIC_SHMBUF_H
#define __ASM_GENERIC_SHMBUF_H

#include <asm/bitsperlong.h>

/*
 * The shmid64_ds structure for x86 architecture.
 * Note extra padding because this structure is passed back and forth
 * between kernel and user space.
 *
 * shmid64_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 shmid64_ds {
	struct ipc64_perm	shm_perm;	/* operation perms */
	size_t			shm_segsz;	/* size of segment (bytes) */
	__kernel_time_t		shm_atime;	/* last attach time */
#if __BITS_PER_LONG != 64
	unsigned long		__unused1;
#endif
	__kernel_time_t		shm_dtime;	/* last detach time */
#if __BITS_PER_LONG != 64
	unsigned long		__unused2;
#endif
	__kernel_time_t		shm_ctime;	/* last change time */
#if __BITS_PER_LONG != 64
	unsigned long		__unused3;
#endif
	__kernel_pid_t		shm_cpid;	/* pid of creator */
	__kernel_pid_t		shm_lpid;	/* pid of last operator */
	unsigned long		shm_nattch;	/* no. of current attaches */
	unsigned long		__unused4;
	unsigned long		__unused5;
};

struct shminfo64 {
	unsigned long	shmmax;
	unsigned long	shmmin;
	unsigned long	shmmni;
	unsigned long	shmseg;
	unsigned long	shmall;
	unsigned long	__unused1;
	unsigned long	__unused2;
	unsigned long	__unused3;
	unsigned long	__unused4;
};

#endif /* __ASM_GENERIC_SHMBUF_H */
Commit	Line	Data
2864d32b AB	1	#ifndef __ASM_GENERIC_SHMBUF_H
	2	#define __ASM_GENERIC_SHMBUF_H
	3
	4	#include <asm/bitsperlong.h>
	5
	6	/*
	7	* The shmid64_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	* shmid64_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	*
	20	* Pad space is left for:
	21	* - 64-bit time_t to solve y2038 problem
	22	* - 2 miscellaneous 32-bit values
	23	*/
	24
	25	struct shmid64_ds {
	26	struct ipc64_perm shm_perm; /* operation perms */
	27	size_t shm_segsz; /* size of segment (bytes) */
	28	__kernel_time_t shm_atime; /* last attach time */
	29	#if __BITS_PER_LONG != 64
	30	unsigned long __unused1;
	31	#endif
	32	__kernel_time_t shm_dtime; /* last detach time */
	33	#if __BITS_PER_LONG != 64
	34	unsigned long __unused2;
	35	#endif
	36	__kernel_time_t shm_ctime; /* last change time */
	37	#if __BITS_PER_LONG != 64
	38	unsigned long __unused3;
	39	#endif
	40	__kernel_pid_t shm_cpid; /* pid of creator */
	41	__kernel_pid_t shm_lpid; /* pid of last operator */
	42	unsigned long shm_nattch; /* no. of current attaches */
	43	unsigned long __unused4;
	44	unsigned long __unused5;
	45	};
	46
	47	struct shminfo64 {
	48	unsigned long shmmax;
	49	unsigned long shmmin;
	50	unsigned long shmmni;
	51	unsigned long shmseg;
	52	unsigned long shmall;
	53	unsigned long __unused1;
	54	unsigned long __unused2;
	55	unsigned long __unused3;
	56	unsigned long __unused4;
	57	};
	58
	59	#endif /* __ASM_GENERIC_SHMBUF_H */