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, but the padding is on the wrong
8 * side for big-endian xtensa, for historic reasons.
9 *
10 * Pad space is left for:
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
23struct shmid64_ds {
24	struct ipc64_perm	shm_perm;	/* operation perms */
25	size_t			shm_segsz;	/* size of segment (bytes) */
26	unsigned long		shm_atime;	/* last attach time */
27	unsigned long		shm_atime_high;
28	unsigned long		shm_dtime;	/* last detach time */
29	unsigned long		shm_dtime_high;
30	unsigned long		shm_ctime;	/* last change time */
31	unsigned long		shm_ctime_high;
32	__kernel_pid_t		shm_cpid;	/* pid of creator */
33	__kernel_pid_t		shm_lpid;	/* pid of last operator */
34	unsigned long		shm_nattch;	/* no. of current attaches */
35	unsigned long		__unused4;
36	unsigned long		__unused5;
37};
38
39struct shminfo64 {
40	unsigned long	shmmax;
41	unsigned long	shmmin;
42	unsigned long	shmmni;
43	unsigned long	shmseg;
44	unsigned long	shmall;
45	unsigned long	__unused1;
46	unsigned long	__unused2;
47	unsigned long	__unused3;
48	unsigned long	__unused4;
49};
50
51#endif	/* _XTENSA_SHMBUF_H */
52