linux/include/uapi/asm-generic/shmbuf.h
David Howells 8a1ab3155c UAPI: (Scripted) Disintegrate include/asm-generic
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
2012-10-04 18:20:15 +01:00

60 lines
1.7 KiB
C

#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 */