xref: /xnu-8792.81.2/bsd/sys/msgbuf.h (revision 19c3b8c28c31cb8130e034cfb5df6bf9ba342d90)
1*19c3b8c2SApple OSS Distributions /*
2*19c3b8c2SApple OSS Distributions  * Copyright (c) 2000-2010 Apple, Inc. All rights reserved.
3*19c3b8c2SApple OSS Distributions  *
4*19c3b8c2SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*19c3b8c2SApple OSS Distributions  *
6*19c3b8c2SApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*19c3b8c2SApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*19c3b8c2SApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*19c3b8c2SApple OSS Distributions  * compliance with the License. The rights granted to you under the License
10*19c3b8c2SApple OSS Distributions  * may not be used to create, or enable the creation or redistribution of,
11*19c3b8c2SApple OSS Distributions  * unlawful or unlicensed copies of an Apple operating system, or to
12*19c3b8c2SApple OSS Distributions  * circumvent, violate, or enable the circumvention or violation of, any
13*19c3b8c2SApple OSS Distributions  * terms of an Apple operating system software license agreement.
14*19c3b8c2SApple OSS Distributions  *
15*19c3b8c2SApple OSS Distributions  * Please obtain a copy of the License at
16*19c3b8c2SApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*19c3b8c2SApple OSS Distributions  *
18*19c3b8c2SApple OSS Distributions  * The Original Code and all software distributed under the License are
19*19c3b8c2SApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*19c3b8c2SApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*19c3b8c2SApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*19c3b8c2SApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*19c3b8c2SApple OSS Distributions  * Please see the License for the specific language governing rights and
24*19c3b8c2SApple OSS Distributions  * limitations under the License.
25*19c3b8c2SApple OSS Distributions  *
26*19c3b8c2SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*19c3b8c2SApple OSS Distributions  */
28*19c3b8c2SApple OSS Distributions /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
29*19c3b8c2SApple OSS Distributions /*
30*19c3b8c2SApple OSS Distributions  * Copyright (c) 1981, 1984, 1993
31*19c3b8c2SApple OSS Distributions  *	The Regents of the University of California.  All rights reserved.
32*19c3b8c2SApple OSS Distributions  *
33*19c3b8c2SApple OSS Distributions  * Redistribution and use in source and binary forms, with or without
34*19c3b8c2SApple OSS Distributions  * modification, are permitted provided that the following conditions
35*19c3b8c2SApple OSS Distributions  * are met:
36*19c3b8c2SApple OSS Distributions  * 1. Redistributions of source code must retain the above copyright
37*19c3b8c2SApple OSS Distributions  *    notice, this list of conditions and the following disclaimer.
38*19c3b8c2SApple OSS Distributions  * 2. Redistributions in binary form must reproduce the above copyright
39*19c3b8c2SApple OSS Distributions  *    notice, this list of conditions and the following disclaimer in the
40*19c3b8c2SApple OSS Distributions  *    documentation and/or other materials provided with the distribution.
41*19c3b8c2SApple OSS Distributions  * 3. All advertising materials mentioning features or use of this software
42*19c3b8c2SApple OSS Distributions  *    must display the following acknowledgement:
43*19c3b8c2SApple OSS Distributions  *	This product includes software developed by the University of
44*19c3b8c2SApple OSS Distributions  *	California, Berkeley and its contributors.
45*19c3b8c2SApple OSS Distributions  * 4. Neither the name of the University nor the names of its contributors
46*19c3b8c2SApple OSS Distributions  *    may be used to endorse or promote products derived from this software
47*19c3b8c2SApple OSS Distributions  *    without specific prior written permission.
48*19c3b8c2SApple OSS Distributions  *
49*19c3b8c2SApple OSS Distributions  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50*19c3b8c2SApple OSS Distributions  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51*19c3b8c2SApple OSS Distributions  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52*19c3b8c2SApple OSS Distributions  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53*19c3b8c2SApple OSS Distributions  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54*19c3b8c2SApple OSS Distributions  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55*19c3b8c2SApple OSS Distributions  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56*19c3b8c2SApple OSS Distributions  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57*19c3b8c2SApple OSS Distributions  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58*19c3b8c2SApple OSS Distributions  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59*19c3b8c2SApple OSS Distributions  * SUCH DAMAGE.
60*19c3b8c2SApple OSS Distributions  *
61*19c3b8c2SApple OSS Distributions  *	@(#)msgbuf.h	8.1 (Berkeley) 6/2/93
62*19c3b8c2SApple OSS Distributions  */
63*19c3b8c2SApple OSS Distributions #ifndef _SYS_MSGBUF_H_
64*19c3b8c2SApple OSS Distributions #define _SYS_MSGBUF_H_
65*19c3b8c2SApple OSS Distributions 
66*19c3b8c2SApple OSS Distributions #include <sys/cdefs.h>
67*19c3b8c2SApple OSS Distributions 
68*19c3b8c2SApple OSS Distributions #define MAX_MSG_BSIZE   (1*1024*1024)
69*19c3b8c2SApple OSS Distributions struct  msgbuf {
70*19c3b8c2SApple OSS Distributions #define MSG_MAGIC       0x063061
71*19c3b8c2SApple OSS Distributions 	int             msg_magic;
72*19c3b8c2SApple OSS Distributions 	int             msg_size;
73*19c3b8c2SApple OSS Distributions 	int             msg_bufx;               /* write pointer */
74*19c3b8c2SApple OSS Distributions 	int             msg_bufr;               /* read pointer */
75*19c3b8c2SApple OSS Distributions 	char    *msg_bufc;              /* buffer */
76*19c3b8c2SApple OSS Distributions };
77*19c3b8c2SApple OSS Distributions 
78*19c3b8c2SApple OSS Distributions #ifdef XNU_KERNEL_PRIVATE
79*19c3b8c2SApple OSS Distributions __BEGIN_DECLS
80*19c3b8c2SApple OSS Distributions extern struct   msgbuf *msgbufp;
81*19c3b8c2SApple OSS Distributions extern struct   msgbuf *aslbufp;
82*19c3b8c2SApple OSS Distributions extern void log_putc(char);
83*19c3b8c2SApple OSS Distributions extern void log_putc_locked(struct msgbuf *, char);
84*19c3b8c2SApple OSS Distributions extern int log_dmesg(user_addr_t, uint32_t, int32_t *);
85*19c3b8c2SApple OSS Distributions __END_DECLS
86*19c3b8c2SApple OSS Distributions #endif /* XNU_KERNEL_PRIVATE */
87*19c3b8c2SApple OSS Distributions 
88*19c3b8c2SApple OSS Distributions #endif  /* !_SYS_MSGBUF_H_ */
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