xref: /xnu-8796.101.5/bsd/sys/posix_shm.h (revision aca3beaa3dfbd42498b42c5e5ce20a938e6554e5)
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 
51 struct label;
52 
53 #define PSHMNAMLEN      31      /* maximum name segment length we bother with */
54 
55 struct 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];
63 	void         *pshm_memobject;
64 	struct label *pshm_label;
65 };
66 
67 #endif
68