54 lines
2.3 KiB
C
54 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 1981, 1984, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* @(#)msgbuf.h 8.1 (Berkeley) 6/2/93
|
|
* $Id: msgbuf.h,v 1.5 1995/03/16 18:16:21 bde Exp $
|
|
*/
|
|
|
|
#ifndef _SYS_MSGBUF_H_
|
|
#define _SYS_MSGBUF_H_
|
|
|
|
#define MSG_BSIZE (4096 - 3 * sizeof(unsigned int))
|
|
struct msgbuf {
|
|
#define MSG_MAGIC 0x063061
|
|
unsigned int msg_magic;
|
|
unsigned int msg_bufx; /* write pointer */
|
|
unsigned int msg_bufr; /* read pointer */
|
|
char msg_bufc[MSG_BSIZE]; /* buffer */
|
|
};
|
|
#ifdef KERNEL
|
|
extern int msgbufmapped;
|
|
extern struct msgbuf *msgbufp;
|
|
#endif
|
|
|
|
#endif
|