1/*
2 * Copyright (c) 1999-2003 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/*
29 * Copyright (c) 1990, 1996-1998 Apple Computer, Inc.
30 * All Rights Reserved.
31 */
32/*
33 * posix_shm.c : Support for POSIX shared memory APIs
34 *
35 * File: posix_shm.c
36 * Author: Ananthakrishna Ramesh
37 *
38 * HISTORY
39 * 2-Sep-1999 A.Ramesh
40 * Created for MacOSX
41 *
42 */
43
44#ifndef _SYS_POSIX_SHM_H_
45#define _SYS_POSIX_SHM_H_
46
47#include <sys/appleapiopts.h>
48#include <sys/types.h>
49#include <sys/proc.h>
50
51struct label;
52
53#define PSHMNAMLEN 31 /* maximum name segment length we bother with */
54
55struct pshminfo {
56 unsigned int pshm_flags;
57 unsigned int pshm_usecount;
58 off_t pshm_length;
59 mode_t pshm_mode;
60 uid_t pshm_uid;
61 gid_t pshm_gid;
62 char pshm_name[PSHMNAMLEN + 1]; /* segment name */
63 void * pshm_memobject;
64#if DIAGNOSTIC
65 unsigned int pshm_readcount;
66 unsigned int pshm_writecount;
67 struct proc * pshm_proc;
68#endif /* DIAGNOSTIC */
69 struct label * pshm_label;
70};
71#define PSHMINFO_NULL (struct pshminfo *)0
72
73#define PSHM_NONE 1
74#define PSHM_DEFINED 2
75#define PSHM_ALLOCATED 4
76#define PSHM_MAPPED 8
77#define PSHM_INUSE 0x10
78#define PSHM_REMOVED 0x20
79#define PSHM_INCREATE 0x40
80#define PSHM_INDELETE 0x80
81
82#endif
83