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Text File | 1992-09-04 | 2.9 KB | 75 lines | [TEXT/UNIX] |
- /*
- * Copyright (c) 1988 University of Utah.
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * the Systems Programming Group of the University of Utah Computer
- * Science Department.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)ipc.h 7.2 (Berkeley) 2/5/91
- */
-
- /*
- * SVID compatible ipc.h file
- */
- #ifndef _IPC_H_
- #define _IPC_H_
-
- typedef long key_t; /* XXX should be in types.h */
-
- struct ipc_perm {
- ushort cuid; /* creator user id */
- ushort cgid; /* creator group id */
- ushort uid; /* user id */
- ushort gid; /* group id */
- ushort mode; /* r/w permission */
- ushort seq; /* sequence # (to generate unique msg/sem/shm id) */
- key_t key; /* user specified msg/sem/shm key */
- };
-
- /* common mode bits */
- #define IPC_R 00400 /* read permission */
- #define IPC_W 00200 /* write/alter permission */
-
- /* SVID required constants (same values as system 5) */
- #define IPC_CREAT 01000 /* create entry if key does not exist */
- #define IPC_EXCL 02000 /* fail if key exists */
- #define IPC_NOWAIT 04000 /* error if request must wait */
-
- #define IPC_PRIVATE (key_t)0 /* private key */
-
- #define IPC_RMID 0 /* remove identifier */
- #define IPC_SET 1 /* set options */
- #define IPC_STAT 2 /* get options */
-
- #endif /* !_IPC_H_ */
-