Commit | Line | Data |
---|---|---|
b688fc87 WJ |
1 | /* |
2 | * Copyright (c) 1988 University of Utah. | |
3 | * Copyright (c) 1990 The Regents of the University of California. | |
4 | * All rights reserved. | |
5 | * | |
6 | * This code is derived from software contributed to Berkeley by | |
7 | * the Systems Programming Group of the University of Utah Computer | |
8 | * Science Department. | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * 1. Redistributions of source code must retain the above copyright | |
14 | * notice, this list of conditions and the following disclaimer. | |
15 | * 2. Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in the | |
17 | * documentation and/or other materials provided with the distribution. | |
18 | * 3. All advertising materials mentioning features or use of this software | |
19 | * must display the following acknowledgement: | |
20 | * This product includes software developed by the University of | |
21 | * California, Berkeley and its contributors. | |
22 | * 4. Neither the name of the University nor the names of its contributors | |
23 | * may be used to endorse or promote products derived from this software | |
24 | * without specific prior written permission. | |
25 | * | |
26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
36 | * SUCH DAMAGE. | |
37 | * | |
38 | * @(#)ipc.h 7.2 (Berkeley) 2/5/91 | |
39 | */ | |
40 | ||
41 | /* | |
42 | * SVID compatible ipc.h file | |
43 | */ | |
44 | #ifndef _IPC_H_ | |
45 | #define _IPC_H_ | |
46 | ||
47 | typedef long key_t; /* XXX should be in types.h */ | |
48 | ||
49 | struct ipc_perm { | |
50 | ushort cuid; /* creator user id */ | |
51 | ushort cgid; /* creator group id */ | |
52 | ushort uid; /* user id */ | |
53 | ushort gid; /* group id */ | |
54 | ushort mode; /* r/w permission */ | |
55 | ushort seq; /* sequence # (to generate unique msg/sem/shm id) */ | |
56 | key_t key; /* user specified msg/sem/shm key */ | |
57 | }; | |
58 | ||
59 | /* common mode bits */ | |
60 | #define IPC_R 00400 /* read permission */ | |
61 | #define IPC_W 00200 /* write/alter permission */ | |
62 | ||
63 | /* SVID required constants (same values as system 5) */ | |
64 | #define IPC_CREAT 01000 /* create entry if key does not exist */ | |
65 | #define IPC_EXCL 02000 /* fail if key exists */ | |
66 | #define IPC_NOWAIT 04000 /* error if request must wait */ | |
67 | ||
68 | #define IPC_PRIVATE (key_t)0 /* private key */ | |
69 | ||
70 | #define IPC_RMID 0 /* remove identifier */ | |
71 | #define IPC_SET 1 /* set options */ | |
72 | #define IPC_STAT 2 /* get options */ | |
73 | ||
74 | #endif /* !_IPC_H_ */ |