Return to ipc.h CVS log

Up to [Net/2] / Net2 / sys

Annotation of Net2/sys/ipc.h, revision 1.1.1.1

1.1       root        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_ */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.