projects / unix-history / blame
| 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_ */ |