sysdeps/unix/sysv/linux/mips/bits/types/struct_shmid_ds.h

   1 /* Linux/MIPS implementation of the shared memory struct shmid_ds.
   2    Copyright (C) 2020-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _SYS_SHM_H
  20 # error "Never include <bits/types/struct_shmid_ds.h> directly; use <sys/shm.h> instead."
  21 #endif
  22
  23 /* Data structure describing a shared memory segment.  */
  24 struct shmid_ds
  25   {
  26 #ifdef __USE_TIME_BITS64
  27 # include <bits/types/struct_shmid64_ds_helper.h>
  28 #else
  29     struct ipc_perm shm_perm;           /* operation permission struct */
  30     size_t shm_segsz;                   /* size of segment in bytes */
  31 # if __TIMESIZE == 32
  32     __time_t shm_atime;                 /* time of last shmat() */
  33     __time_t shm_dtime;                 /* time of last shmdt() */
  34     __time_t shm_ctime;                 /* time of last change by shmctl() */
  35 # else
  36     __time_t shm_atime;                 /* time of last shmat() */
  37     __time_t shm_dtime;                 /* time of last shmdt() */
  38     __time_t shm_ctime;                 /* time of last change by shmctl() */
  39 # endif
  40     __pid_t shm_cpid;                   /* pid of creator */
  41     __pid_t shm_lpid;                   /* pid of last shmop */
  42     shmatt_t shm_nattch;                /* number of current attaches */
  43 # if __TIMESIZE == 32
  44     unsigned short int __shm_atime_high;
  45     unsigned short int __shm_dtime_high;
  46     unsigned short int __shm_ctime_high;
  47     unsigned short int __glibc_reserved4;
  48 # else
  49     __syscall_ulong_t __glibc_reserved5;
  50     __syscall_ulong_t __glibc_reserved6;
  51 # endif
  52 #endif
  53   };