arch/parisc/include/asm/shmbuf.h

   1 #ifndef _PARISC_SHMBUF_H
   2 #define _PARISC_SHMBUF_H
   3
   4 /*
   5  * The shmid64_ds structure for parisc 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 struct shmid64_ds {
  15         struct ipc64_perm       shm_perm;       /* operation perms */
  16 #ifndef CONFIG_64BIT
  17         unsigned int            __pad1;
  18 #endif
  19         __kernel_time_t         shm_atime;      /* last attach time */
  20 #ifndef CONFIG_64BIT
  21         unsigned int            __pad2;
  22 #endif
  23         __kernel_time_t         shm_dtime;      /* last detach time */
  24 #ifndef CONFIG_64BIT
  25         unsigned int            __pad3;
  26 #endif
  27         __kernel_time_t         shm_ctime;      /* last change time */
  28 #ifndef CONFIG_64BIT
  29         unsigned int            __pad4;
  30 #endif
  31         size_t                  shm_segsz;      /* size of segment (bytes) */
  32         __kernel_pid_t          shm_cpid;       /* pid of creator */
  33         __kernel_pid_t          shm_lpid;       /* pid of last operator */
  34         unsigned int            shm_nattch;     /* no. of current attaches */
  35         unsigned int            __unused1;
  36         unsigned int            __unused2;
  37 };
  38
  39 #ifdef CONFIG_64BIT
  40 /* The 'unsigned int' (formerly 'unsigned long') data types below will
  41  * ensure that a 32-bit app calling shmctl(*,IPC_INFO,*) will work on
  42  * a wide kernel, but if some of these values are meant to contain pointers
  43  * they may need to be 'long long' instead. -PB XXX FIXME
  44  */
  45 #endif
  46 struct shminfo64 {
  47         unsigned int    shmmax;
  48         unsigned int    shmmin;
  49         unsigned int    shmmni;
  50         unsigned int    shmseg;
  51         unsigned int    shmall;
  52         unsigned int    __unused1;
  53         unsigned int    __unused2;
  54         unsigned int    __unused3;
  55         unsigned int    __unused4;
  56 };
  57
  58 #endif /* _PARISC_SHMBUF_H */