1 | /* |
2 | * Copyright (c) 2000-2002 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) 1988 University of Utah. |
30 | * Copyright (c) 1990, 1993 |
31 | * The Regents of the University of California. All rights reserved. |
32 | * (c) UNIX System Laboratories, Inc. |
33 | * All or some portions of this file are derived from material licensed |
34 | * to the University of California by American Telephone and Telegraph |
35 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with |
36 | * the permission of UNIX System Laboratories, Inc. |
37 | * |
38 | * This code is derived from software contributed to Berkeley by |
39 | * the Systems Programming Group of the University of Utah Computer |
40 | * Science Department. |
41 | * |
42 | * Redistribution and use in source and binary forms, with or without |
43 | * modification, are permitted provided that the following conditions |
44 | * are met: |
45 | * 1. Redistributions of source code must retain the above copyright |
46 | * notice, this list of conditions and the following disclaimer. |
47 | * 2. Redistributions in binary form must reproduce the above copyright |
48 | * notice, this list of conditions and the following disclaimer in the |
49 | * documentation and/or other materials provided with the distribution. |
50 | * 3. All advertising materials mentioning features or use of this software |
51 | * must display the following acknowledgement: |
52 | * This product includes software developed by the University of |
53 | * California, Berkeley and its contributors. |
54 | * 4. Neither the name of the University nor the names of its contributors |
55 | * may be used to endorse or promote products derived from this software |
56 | * without specific prior written permission. |
57 | * |
58 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
59 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
60 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
61 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
62 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
63 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
64 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
65 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
66 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
67 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
68 | * SUCH DAMAGE. |
69 | * |
70 | * @(#)ipc.h 8.4 (Berkeley) 2/19/95 |
71 | */ |
72 | |
73 | /* |
74 | * SVID compatible ipc.h file |
75 | */ |
76 | #ifndef _SYS_IPC_H_ |
77 | #define _SYS_IPC_H_ |
78 | |
79 | #include <sys/appleapiopts.h> |
80 | #include <sys/cdefs.h> |
81 | |
82 | #include <sys/_types.h> |
83 | |
84 | /* |
85 | * [XSI] The uid_t, gid_t, mode_t, and key_t types SHALL be defined as |
86 | * described in <sys/types.h>. |
87 | */ |
88 | #include <sys/_types/_uid_t.h> |
89 | #include <sys/_types/_gid_t.h> |
90 | #include <sys/_types/_mode_t.h> |
91 | #include <sys/_types/_key_t.h> |
92 | |
93 | |
94 | #pragma pack(4) |
95 | |
96 | /* |
97 | * Technically, we should force all code references to the new structure |
98 | * definition, not in just the standards conformance case, and leave the |
99 | * legacy interface there for binary compatibility only. Currently, we |
100 | * are only forcing this for programs requesting standards conformance. |
101 | */ |
102 | #if __DARWIN_UNIX03 || defined(KERNEL) |
103 | /* |
104 | * [XSI] Information used in determining permission to perform an IPC |
105 | * operation |
106 | */ |
107 | struct ipc_perm { |
108 | uid_t uid; /* [XSI] Owner's user ID */ |
109 | gid_t gid; /* [XSI] Owner's group ID */ |
110 | uid_t cuid; /* [XSI] Creator's user ID */ |
111 | gid_t cgid; /* [XSI] Creator's group ID */ |
112 | mode_t mode; /* [XSI] Read/write permission */ |
113 | unsigned short _seq; /* Reserved for internal use */ |
114 | key_t _key; /* Reserved for internal use */ |
115 | }; |
116 | #define __ipc_perm_new ipc_perm |
117 | #else /* !__DARWIN_UNIX03 */ |
118 | #define ipc_perm __ipc_perm_old |
119 | #endif /* !__DARWIN_UNIX03 */ |
120 | |
121 | #if !__DARWIN_UNIX03 |
122 | /* |
123 | * Legacy structure; this structure is maintained for binary backward |
124 | * compatability with previous versions of the interface. New code |
125 | * should not use this interface, since ID values may be truncated. |
126 | */ |
127 | struct __ipc_perm_old { |
128 | __uint16_t cuid; /* Creator's user ID */ |
129 | __uint16_t cgid; /* Creator's group ID */ |
130 | __uint16_t uid; /* Owner's user ID */ |
131 | __uint16_t gid; /* Owner's group ID */ |
132 | mode_t mode; /* Read/Write permission */ |
133 | __uint16_t seq; /* Reserved for internal use */ |
134 | key_t key; /* Reserved for internal use */ |
135 | }; |
136 | #endif /* !__DARWIN_UNIX03 */ |
137 | |
138 | #pragma pack() |
139 | |
140 | /* |
141 | * [XSI] Definitions shall be provided for the following constants: |
142 | */ |
143 | |
144 | /* Mode bits */ |
145 | #define IPC_CREAT 001000 /* Create entry if key does not exist */ |
146 | #define IPC_EXCL 002000 /* Fail if key exists */ |
147 | #define IPC_NOWAIT 004000 /* Error if request must wait */ |
148 | |
149 | /* Keys */ |
150 | #define IPC_PRIVATE ((key_t)0) /* Private key */ |
151 | |
152 | /* Control commands */ |
153 | #define IPC_RMID 0 /* Remove identifier */ |
154 | #define IPC_SET 1 /* Set options */ |
155 | #define IPC_STAT 2 /* Get options */ |
156 | |
157 | |
158 | #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) |
159 | |
160 | /* common mode bits */ |
161 | #define IPC_R 000400 /* Read permission */ |
162 | #define IPC_W 000200 /* Write/alter permission */ |
163 | #define IPC_M 010000 /* Modify control info permission */ |
164 | |
165 | #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ |
166 | |
167 | |
168 | #ifdef BSD_KERNEL_PRIVATE |
169 | /* |
170 | * Kernel implementation details which should not be utilized by user |
171 | * space programs. |
172 | */ |
173 | |
174 | /* Macros to convert between ipc ids and array indices or sequence ids */ |
175 | #define IPCID_TO_IX(id) ((id) & 0xffff) |
176 | #define IPCID_TO_SEQ(id) (((id) >> 16) & 0xffff) |
177 | #define IXSEQ_TO_IPCID(ix, perm) (((perm._seq) << 16L) | ((ix) & 0xffff)) |
178 | |
179 | struct ucred; |
180 | |
181 | int ipcperm(struct ucred *, struct ipc_perm *, int); |
182 | #endif /* BSD_KERNEL_PRIVATE */ |
183 | |
184 | #ifndef KERNEL |
185 | |
186 | __BEGIN_DECLS |
187 | /* [XSI] */ |
188 | key_t ftok(const char *, int); |
189 | __END_DECLS |
190 | |
191 | #endif /* !KERNEL */ |
192 | |
193 | #endif /* !_SYS_IPC_H_ */ |
194 | |