linux/arch/sparc/include/asm/shmbuf.h
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   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
  20struct 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
  36struct 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 */
  51
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