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
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