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Annotation of sys/sys/msgbuf.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: msgbuf.h,v 1.8 2005/04/14 21:58:50 krw Exp $  */
                      2: /*     $NetBSD: msgbuf.h,v 1.8 1995/03/26 20:24:27 jtc Exp $   */
                      3:
                      4: /*
                      5:  * Copyright (c) 1981, 1984, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. Neither the name of the University nor the names of its contributors
                     17:  *    may be used to endorse or promote products derived from this software
                     18:  *    without specific prior written permission.
                     19:  *
                     20:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     30:  * SUCH DAMAGE.
                     31:  *
                     32:  *     @(#)msgbuf.h    8.1 (Berkeley) 6/2/93
                     33:  */
                     34:
                     35: struct msgbuf {
                     36: #define        MSG_MAGIC       0x063061
                     37:        long    msg_magic;
                     38:        long    msg_bufx;               /* write pointer */
                     39:        long    msg_bufr;               /* read pointer */
                     40:        long    msg_bufs;               /* real msg_bufc size (bytes) */
                     41:        long    msg_bufl;               /* # chars, <= msg_bufs */
                     42:        char    msg_bufc[1];            /* buffer */
                     43: };
                     44: #ifdef _KERNEL
                     45: extern struct msgbuf *msgbufp;
                     46:
                     47: void   initmsgbuf(caddr_t buf, size_t bufsize);
                     48: void   msgbuf_putchar(const char c);
                     49: #endif