1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * include/asm-xtensa/shmbuf.h
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.
9 * Pad space is left for:
10 * - 64-bit time_t to solve y2038 problem
11 * - 2 miscellaneous 32-bit values
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
17 * Copyright (C) 2001 - 2005 Tensilica Inc.
20 #ifndef _XTENSA_SHMBUF_H
21 #define _XTENSA_SHMBUF_H
23 #if defined (__XTENSA_EL__)
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;
39 #elif defined (__XTENSA_EB__)
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;
56 # error endian order not defined
66 unsigned long __unused1;
67 unsigned long __unused2;
68 unsigned long __unused3;
69 unsigned long __unused4;
72 #endif /* _XTENSA_SHMBUF_H */