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
23#include <asm/ipcbuf.h>
24#include <asm/posix_types.h>
25
26struct shmid64_ds {
27	struct ipc64_perm	shm_perm;	/* operation perms */
28	__kernel_size_t		shm_segsz;	/* size of segment (bytes) */
29	unsigned long		shm_atime;	/* last attach time */
30	unsigned long		shm_atime_high;
31	unsigned long		shm_dtime;	/* last detach time */
32	unsigned long		shm_dtime_high;
33	unsigned long		shm_ctime;	/* last change time */
34	unsigned long		shm_ctime_high;
35	__kernel_pid_t		shm_cpid;	/* pid of creator */
36	__kernel_pid_t		shm_lpid;	/* pid of last operator */
37	unsigned long		shm_nattch;	/* no. of current attaches */
38	unsigned long		__unused4;
39	unsigned long		__unused5;
40};
41
42struct shminfo64 {
43	unsigned long	shmmax;
44	unsigned long	shmmin;
45	unsigned long	shmmni;
46	unsigned long	shmseg;
47	unsigned long	shmall;
48	unsigned long	__unused1;
49	unsigned long	__unused2;
50	unsigned long	__unused3;
51	unsigned long	__unused4;
52};
53
54#endif	/* _XTENSA_SHMBUF_H */
55