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shmbuf.h
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1 /*
2  * include/asm-xtensa/shmbuf.h
3  *
4  * The shmid64_ds structure for Xtensa architecture.
5  * Note extra padding because this structure is passed back and forth
6  * between kernel and user space.
7  *
8  * Pad space is left for:
9  * - 64-bit time_t to solve y2038 problem
10  * - 2 miscellaneous 32-bit values
11  *
12  * This file is subject to the terms and conditions of the GNU General Public
13  * License. See the file "COPYING" in the main directory of this archive
14  * for more details.
15  *
16  * Copyright (C) 2001 - 2005 Tensilica Inc.
17  */
18 
19 #ifndef _XTENSA_SHMBUF_H
20 #define _XTENSA_SHMBUF_H
21 
22 #if defined (__XTENSA_EL__)
23 struct shmid64_ds {
24  struct ipc64_perm shm_perm; /* operation perms */
25  size_t shm_segsz; /* size of segment (bytes) */
26  __kernel_time_t shm_atime; /* last attach time */
27  unsigned long __unused1;
28  __kernel_time_t shm_dtime; /* last detach time */
29  unsigned long __unused2;
30  __kernel_time_t shm_ctime; /* last change time */
31  unsigned long __unused3;
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 #elif defined (__XTENSA_EB__)
39 struct shmid64_ds {
40  struct ipc64_perm shm_perm; /* operation perms */
41  size_t shm_segsz; /* size of segment (bytes) */
42  __kernel_time_t shm_atime; /* last attach time */
43  unsigned long __unused1;
44  __kernel_time_t shm_dtime; /* last detach time */
45  unsigned long __unused2;
46  __kernel_time_t shm_ctime; /* last change time */
47  unsigned long __unused3;
48  __kernel_pid_t shm_cpid; /* pid of creator */
49  __kernel_pid_t shm_lpid; /* pid of last operator */
50  unsigned long shm_nattch; /* no. of current attaches */
51  unsigned long __unused4;
52  unsigned long __unused5;
53 };
54 #else
55 # error endian order not defined
56 #endif
57 
58 
59 struct shminfo64 {
60  unsigned long shmmax;
61  unsigned long shmmin;
62  unsigned long shmmni;
63  unsigned long shmseg;
64  unsigned long shmall;
65  unsigned long __unused1;
66  unsigned long __unused2;
67  unsigned long __unused3;
68  unsigned long __unused4;
69 };
70 
71 #endif /* _XTENSA_SHMBUF_H */
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