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kernel/linux-rt-4.4.41/arch/xtensa/include/uapi/asm/shmbuf.h 2.06 KB
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  /*
   * include/asm-xtensa/shmbuf.h
   *
   * The shmid64_ds structure for Xtensa architecture.
   * Note extra padding because this structure is passed back and forth
   * between kernel and user space.
   *
   * Pad space is left for:
   * - 64-bit time_t to solve y2038 problem
   * - 2 miscellaneous 32-bit values
   *
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file "COPYING" in the main directory of this archive
   * for more details.
   *
   * Copyright (C) 2001 - 2005 Tensilica Inc.
   */
  
  #ifndef _XTENSA_SHMBUF_H
  #define _XTENSA_SHMBUF_H
  
  #if defined (__XTENSA_EL__)
  struct shmid64_ds {
  	struct ipc64_perm	shm_perm;	/* operation perms */
  	size_t			shm_segsz;	/* size of segment (bytes) */
  	__kernel_time_t		shm_atime;	/* last attach time */
  	unsigned long		__unused1;
  	__kernel_time_t		shm_dtime;	/* last detach time */
  	unsigned long		__unused2;
  	__kernel_time_t		shm_ctime;	/* last change time */
  	unsigned long		__unused3;
  	__kernel_pid_t		shm_cpid;	/* pid of creator */
  	__kernel_pid_t		shm_lpid;	/* pid of last operator */
  	unsigned long		shm_nattch;	/* no. of current attaches */
  	unsigned long		__unused4;
  	unsigned long		__unused5;
  };
  #elif defined (__XTENSA_EB__)
  struct shmid64_ds {
  	struct ipc64_perm	shm_perm;	/* operation perms */
  	size_t			shm_segsz;	/* size of segment (bytes) */
  	__kernel_time_t		shm_atime;	/* last attach time */
  	unsigned long		__unused1;
  	__kernel_time_t		shm_dtime;	/* last detach time */
  	unsigned long		__unused2;
  	__kernel_time_t		shm_ctime;	/* last change time */
  	unsigned long		__unused3;
  	__kernel_pid_t		shm_cpid;	/* pid of creator */
  	__kernel_pid_t		shm_lpid;	/* pid of last operator */
  	unsigned long		shm_nattch;	/* no. of current attaches */
  	unsigned long		__unused4;
  	unsigned long		__unused5;
  };
  #else
  # error endian order not defined
  #endif
  
  
  struct shminfo64 {
  	unsigned long	shmmax;
  	unsigned long	shmmin;
  	unsigned long	shmmni;
  	unsigned long	shmseg;
  	unsigned long	shmall;
  	unsigned long	__unused1;
  	unsigned long	__unused2;
  	unsigned long	__unused3;
  	unsigned long	__unused4;
  };
  
  #endif	/* _XTENSA_SHMBUF_H */