arch/sparc/include/asm/shmbuf.h

   1 #ifndef _SPARC_SHMBUF_H
   2 #define _SPARC_SHMBUF_H
   3
   4 /*
   5  * The shmid64_ds structure for sparc 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
  14 #if defined(__sparc__) && defined(__arch64__)
  15 # define PADDING(x)
  16 #else
  17 # define PADDING(x) unsigned int x;
  18 #endif
  19
  20 struct shmid64_ds {
  21         struct ipc64_perm       shm_perm;       /* operation perms */
  22         PADDING(__pad1)
  23         __kernel_time_t         shm_atime;      /* last attach time */
  24         PADDING(__pad2)
  25         __kernel_time_t         shm_dtime;      /* last detach time */
  26         PADDING(__pad3)
  27         __kernel_time_t         shm_ctime;      /* last change time */
  28         size_t                  shm_segsz;      /* size of segment (bytes) */
  29         __kernel_pid_t          shm_cpid;       /* pid of creator */
  30         __kernel_pid_t          shm_lpid;       /* pid of last operator */
  31         unsigned long           shm_nattch;     /* no. of current attaches */
  32         unsigned long           __unused1;
  33         unsigned long           __unused2;
  34 };
  35
  36 struct shminfo64 {
  37         unsigned long   shmmax;
  38         unsigned long   shmmin;
  39         unsigned long   shmmni;
  40         unsigned long   shmseg;
  41         unsigned long   shmall;
  42         unsigned long   __unused1;
  43         unsigned long   __unused2;
  44         unsigned long   __unused3;
  45         unsigned long   __unused4;
  46 };
  47
  48 #undef PADDING
  49
  50 #endif /* _SPARC_SHMBUF_H */