1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2/* 3 * include/asm-xtensa/shmbuf.h 4 * 5 * The shmid64_ds structure for Xtensa 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 * This file is subject to the terms and conditions of the GNU General Public 14 * License. See the file "COPYING" in the main directory of this archive 15 * for more details. 16 * 17 * Copyright (C) 2001 - 2005 Tensilica Inc. 18 */ 19 20#ifndef _XTENSA_SHMBUF_H 21#define _XTENSA_SHMBUF_H 22 23#if defined (__XTENSA_EL__) 24struct shmid64_ds { 25 struct ipc64_perm shm_perm; /* operation perms */ 26 size_t shm_segsz; /* size of segment (bytes) */ 27 __kernel_time_t shm_atime; /* last attach time */ 28 unsigned long __unused1; 29 __kernel_time_t shm_dtime; /* last detach time */ 30 unsigned long __unused2; 31 __kernel_time_t shm_ctime; /* last change time */ 32 unsigned long __unused3; 33 __kernel_pid_t shm_cpid; /* pid of creator */ 34 __kernel_pid_t shm_lpid; /* pid of last operator */ 35 unsigned long shm_nattch; /* no. of current attaches */ 36 unsigned long __unused4; 37 unsigned long __unused5; 38}; 39#elif defined (__XTENSA_EB__) 40struct shmid64_ds { 41 struct ipc64_perm shm_perm; /* operation perms */ 42 size_t shm_segsz; /* size of segment (bytes) */ 43 __kernel_time_t shm_atime; /* last attach time */ 44 unsigned long __unused1; 45 __kernel_time_t shm_dtime; /* last detach time */ 46 unsigned long __unused2; 47 __kernel_time_t shm_ctime; /* last change time */ 48 unsigned long __unused3; 49 __kernel_pid_t shm_cpid; /* pid of creator */ 50 __kernel_pid_t shm_lpid; /* pid of last operator */ 51 unsigned long shm_nattch; /* no. of current attaches */ 52 unsigned long __unused4; 53 unsigned long __unused5; 54}; 55#else 56# error endian order not defined 57#endif 58 59 60struct shminfo64 { 61 unsigned long shmmax; 62 unsigned long shmmin; 63 unsigned long shmmni; 64 unsigned long shmseg; 65 unsigned long shmall; 66 unsigned long __unused1; 67 unsigned long __unused2; 68 unsigned long __unused3; 69 unsigned long __unused4; 70}; 71 72#endif /* _XTENSA_SHMBUF_H */ 73