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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * Copyright (c) 1988 University of Utah.
24: * Copyright (c) 1990, 1993
25: * The Regents of the University of California. All rights reserved.
26: * (c) UNIX System Laboratories, Inc.
27: * All or some portions of this file are derived from material licensed
28: * to the University of California by American Telephone and Telegraph
29: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
30: * the permission of UNIX System Laboratories, Inc.
31: *
32: * This code is derived from software contributed to Berkeley by
33: * the Systems Programming Group of the University of Utah Computer
34: * Science Department.
35: *
36: * Redistribution and use in source and binary forms, with or without
37: * modification, are permitted provided that the following conditions
38: * are met:
39: * 1. Redistributions of source code must retain the above copyright
40: * notice, this list of conditions and the following disclaimer.
41: * 2. Redistributions in binary form must reproduce the above copyright
42: * notice, this list of conditions and the following disclaimer in the
43: * documentation and/or other materials provided with the distribution.
44: * 3. All advertising materials mentioning features or use of this software
45: * must display the following acknowledgement:
46: * This product includes software developed by the University of
47: * California, Berkeley and its contributors.
48: * 4. Neither the name of the University nor the names of its contributors
49: * may be used to endorse or promote products derived from this software
50: * without specific prior written permission.
51: *
52: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62: * SUCH DAMAGE.
63: *
64: * @(#)ipc.h 8.4 (Berkeley) 2/19/95
65: */
66:
67: /*
68: * SVID compatible ipc.h file
69: */
70: #ifndef _SYS_IPC_H_
71: #define _SYS_IPC_H_
72:
73: struct ipc_perm {
74: ushort cuid; /* creator user id */
75: ushort cgid; /* creator group id */
76: ushort uid; /* user id */
77: ushort gid; /* group id */
78: ushort mode; /* r/w permission */
79: ushort seq; /* sequence # (to generate unique msg/sem/shm id) */
80: key_t key; /* user specified msg/sem/shm key */
81: };
82:
83: /* common mode bits */
84: #define IPC_R 000400 /* read permission */
85: #define IPC_W 000200 /* write/alter permission */
86: #define IPC_M 010000 /* permission to change control info */
87:
88: /* SVID required constants (same values as system 5) */
89: #define IPC_CREAT 001000 /* create entry if key does not exist */
90: #define IPC_EXCL 002000 /* fail if key exists */
91: #define IPC_NOWAIT 004000 /* error if request must wait */
92:
93: #define IPC_PRIVATE (key_t)0 /* private key */
94:
95: #define IPC_RMID 0 /* remove identifier */
96: #define IPC_SET 1 /* set options */
97: #define IPC_STAT 2 /* get options */
98:
99: #ifdef KERNEL
100: /* Macros to convert between ipc ids and array indices or sequence ids */
101: #define IPCID_TO_IX(id) ((id) & 0xffff)
102: #define IPCID_TO_SEQ(id) (((id) >> 16) & 0xffff)
103: #define IXSEQ_TO_IPCID(ix,perm) (((perm.seq) << 16) | (ix & 0xffff))
104:
105: struct ucred;
106:
107: int ipcperm __P((struct ucred *, struct ipc_perm *, int));
108: #else /* ! KERNEL */
109:
110: /* XXX doesn't really belong here, but has been historical practice in SysV. */
111:
112: #include <sys/cdefs.h>
113:
114: __BEGIN_DECLS
115: key_t ftok __P((const char *, int));
116: __END_DECLS
117:
118: #endif /* KERNEL */
119:
120: #endif /* !_SYS_IPC_H_ */
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