arch/xtensa/include/uapi/asm/shmbuf.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * include/asm-xtensa/shmbuf.h
   4  *
   5  * The shmid64_ds structure for Xtensa architecture.
   6  * Note extra padding because this structure is passed back and forth
   7  * between kernel and user space.
   8  *
   9  * Pad space is left for:
  10  * - 64-bit time_t to solve y2038 problem
  11  * - 2 miscellaneous 32-bit values
  12  *
  13  * This file is subject to the terms and conditions of the GNU General Public
  14  * License.  See the file "COPYING" in the main directory of this archive
  15  * for more details.
  16  *
  17  * Copyright (C) 2001 - 2005 Tensilica Inc.
  18  */
  19
  20 #ifndef _XTENSA_SHMBUF_H
  21 #define _XTENSA_SHMBUF_H
  22
  23 #if defined (__XTENSA_EL__)
  24 struct shmid64_ds {
  25         struct ipc64_perm       shm_perm;       /* operation perms */
  26         size_t                  shm_segsz;      /* size of segment (bytes) */
  27         __kernel_time_t         shm_atime;      /* last attach time */
  28         unsigned long           __unused1;
  29         __kernel_time_t         shm_dtime;      /* last detach time */
  30         unsigned long           __unused2;
  31         __kernel_time_t         shm_ctime;      /* last change time */
  32         unsigned long           __unused3;
  33         __kernel_pid_t          shm_cpid;       /* pid of creator */
  34         __kernel_pid_t          shm_lpid;       /* pid of last operator */
  35         unsigned long           shm_nattch;     /* no. of current attaches */
  36         unsigned long           __unused4;
  37         unsigned long           __unused5;
  38 };
  39 #elif defined (__XTENSA_EB__)
  40 struct shmid64_ds {
  41         struct ipc64_perm       shm_perm;       /* operation perms */
  42         size_t                  shm_segsz;      /* size of segment (bytes) */
  43         __kernel_time_t         shm_atime;      /* last attach time */
  44         unsigned long           __unused1;
  45         __kernel_time_t         shm_dtime;      /* last detach time */
  46         unsigned long           __unused2;
  47         __kernel_time_t         shm_ctime;      /* last change time */
  48         unsigned long           __unused3;
  49         __kernel_pid_t          shm_cpid;       /* pid of creator */
  50         __kernel_pid_t          shm_lpid;       /* pid of last operator */
  51         unsigned long           shm_nattch;     /* no. of current attaches */
  52         unsigned long           __unused4;
  53         unsigned long           __unused5;
  54 };
  55 #else
  56 # error endian order not defined
  57 #endif
  58
  59
  60 struct shminfo64 {
  61         unsigned long   shmmax;
  62         unsigned long   shmmin;
  63         unsigned long   shmmni;
  64         unsigned long   shmseg;
  65         unsigned long   shmall;
  66         unsigned long   __unused1;
  67         unsigned long   __unused2;
  68         unsigned long   __unused3;
  69         unsigned long   __unused4;
  70 };
  71
  72 #endif  /* _XTENSA_SHMBUF_H */