arch/xtensa/include/asm/shmbuf.h

   1 /*
   2  * include/asm-xtensa/shmbuf.h
   3  *
   4  * The shmid64_ds structure for Xtensa architecture.
   5  * Note extra padding because this structure is passed back and forth
   6  * between kernel and user space.
   7  *
   8  * Pad space is left for:
   9  * - 64-bit time_t to solve y2038 problem
  10  * - 2 miscellaneous 32-bit values
  11  *
  12  * This file is subject to the terms and conditions of the GNU General Public
  13  * License.  See the file "COPYING" in the main directory of this archive
  14  * for more details.
  15  *
  16  * Copyright (C) 2001 - 2005 Tensilica Inc.
  17  */
  18
  19 #ifndef _XTENSA_SHMBUF_H
  20 #define _XTENSA_SHMBUF_H
  21
  22 #if defined (__XTENSA_EL__)
  23 struct shmid64_ds {
  24         struct ipc64_perm       shm_perm;       /* operation perms */
  25         size_t                  shm_segsz;      /* size of segment (bytes) */
  26         __kernel_time_t         shm_atime;      /* last attach time */
  27         unsigned long           __unused1;
  28         __kernel_time_t         shm_dtime;      /* last detach time */
  29         unsigned long           __unused2;
  30         __kernel_time_t         shm_ctime;      /* last change time */
  31         unsigned long           __unused3;
  32         __kernel_pid_t          shm_cpid;       /* pid of creator */
  33         __kernel_pid_t          shm_lpid;       /* pid of last operator */
  34         unsigned long           shm_nattch;     /* no. of current attaches */
  35         unsigned long           __unused4;
  36         unsigned long           __unused5;
  37 };
  38 #elif defined (__XTENSA_EB__)
  39 struct shmid64_ds {
  40         struct ipc64_perm       shm_perm;       /* operation perms */
  41         size_t                  shm_segsz;      /* size of segment (bytes) */
  42         __kernel_time_t         shm_atime;      /* last attach time */
  43         unsigned long           __unused1;
  44         __kernel_time_t         shm_dtime;      /* last detach time */
  45         unsigned long           __unused2;
  46         __kernel_time_t         shm_ctime;      /* last change time */
  47         unsigned long           __unused3;
  48         __kernel_pid_t          shm_cpid;       /* pid of creator */
  49         __kernel_pid_t          shm_lpid;       /* pid of last operator */
  50         unsigned long           shm_nattch;     /* no. of current attaches */
  51         unsigned long           __unused4;
  52         unsigned long           __unused5;
  53 };
  54 #else
  55 # error endian order not defined
  56 #endif
  57
  58
  59 struct shminfo64 {
  60         unsigned long   shmmax;
  61         unsigned long   shmmin;
  62         unsigned long   shmmni;
  63         unsigned long   shmseg;
  64         unsigned long   shmall;
  65         unsigned long   __unused1;
  66         unsigned long   __unused2;
  67         unsigned long   __unused3;
  68         unsigned long   __unused4;
  69 };
  70
  71 #endif  /* _XTENSA_SHMBUF_H */