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Linux/arch/sparc/include/uapi/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 
 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 */
 51 

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