arch/s390/include/uapi/asm/shmbuf.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _S390_SHMBUF_H
   3 #define _S390_SHMBUF_H
   4
   5 /*
   6  * The shmid64_ds structure for S/390 architecture.
   7  * Note extra padding because this structure is passed back and forth
   8  * between kernel and user space.
   9  *
  10  * Pad space is left for:
  11  * - 64-bit time_t to solve y2038 problem (for !__s390x__)
  12  * - 2 miscellaneous 32-bit values
  13  */
  14
  15 struct shmid64_ds {
  16         struct ipc64_perm       shm_perm;       /* operation perms */
  17         size_t                  shm_segsz;      /* size of segment (bytes) */
  18         __kernel_time_t         shm_atime;      /* last attach time */
  19 #ifndef __s390x__
  20         unsigned long           __unused1;
  21 #endif /* ! __s390x__ */
  22         __kernel_time_t         shm_dtime;      /* last detach time */
  23 #ifndef __s390x__
  24         unsigned long           __unused2;
  25 #endif /* ! __s390x__ */
  26         __kernel_time_t         shm_ctime;      /* last change time */
  27 #ifndef __s390x__
  28         unsigned long           __unused3;
  29 #endif /* ! __s390x__ */
  30         __kernel_pid_t          shm_cpid;       /* pid of creator */
  31         __kernel_pid_t          shm_lpid;       /* pid of last operator */
  32         unsigned long           shm_nattch;     /* no. of current attaches */
  33         unsigned long           __unused4;
  34         unsigned long           __unused5;
  35 };
  36
  37 struct shminfo64 {
  38         unsigned long   shmmax;
  39         unsigned long   shmmin;
  40         unsigned long   shmmni;
  41         unsigned long   shmseg;
  42         unsigned long   shmall;
  43         unsigned long   __unused1;
  44         unsigned long   __unused2;
  45         unsigned long   __unused3;
  46         unsigned long   __unused4;
  47 };
  48
  49 #endif /* _S390_SHMBUF_H */