xref: /xnu-11417.101.15/bsd/sys/msgbuf.h (revision e3723e1f17661b24996789d8afc084c0c3303b26)
1*e3723e1fSApple OSS Distributions /*
2*e3723e1fSApple OSS Distributions  * Copyright (c) 2000-2010 Apple, Inc. All rights reserved.
3*e3723e1fSApple OSS Distributions  *
4*e3723e1fSApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*e3723e1fSApple OSS Distributions  *
6*e3723e1fSApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*e3723e1fSApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*e3723e1fSApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*e3723e1fSApple OSS Distributions  * compliance with the License. The rights granted to you under the License
10*e3723e1fSApple OSS Distributions  * may not be used to create, or enable the creation or redistribution of,
11*e3723e1fSApple OSS Distributions  * unlawful or unlicensed copies of an Apple operating system, or to
12*e3723e1fSApple OSS Distributions  * circumvent, violate, or enable the circumvention or violation of, any
13*e3723e1fSApple OSS Distributions  * terms of an Apple operating system software license agreement.
14*e3723e1fSApple OSS Distributions  *
15*e3723e1fSApple OSS Distributions  * Please obtain a copy of the License at
16*e3723e1fSApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*e3723e1fSApple OSS Distributions  *
18*e3723e1fSApple OSS Distributions  * The Original Code and all software distributed under the License are
19*e3723e1fSApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*e3723e1fSApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*e3723e1fSApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*e3723e1fSApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*e3723e1fSApple OSS Distributions  * Please see the License for the specific language governing rights and
24*e3723e1fSApple OSS Distributions  * limitations under the License.
25*e3723e1fSApple OSS Distributions  *
26*e3723e1fSApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*e3723e1fSApple OSS Distributions  */
28*e3723e1fSApple OSS Distributions /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
29*e3723e1fSApple OSS Distributions /*
30*e3723e1fSApple OSS Distributions  * Copyright (c) 1981, 1984, 1993
31*e3723e1fSApple OSS Distributions  *	The Regents of the University of California.  All rights reserved.
32*e3723e1fSApple OSS Distributions  *
33*e3723e1fSApple OSS Distributions  * Redistribution and use in source and binary forms, with or without
34*e3723e1fSApple OSS Distributions  * modification, are permitted provided that the following conditions
35*e3723e1fSApple OSS Distributions  * are met:
36*e3723e1fSApple OSS Distributions  * 1. Redistributions of source code must retain the above copyright
37*e3723e1fSApple OSS Distributions  *    notice, this list of conditions and the following disclaimer.
38*e3723e1fSApple OSS Distributions  * 2. Redistributions in binary form must reproduce the above copyright
39*e3723e1fSApple OSS Distributions  *    notice, this list of conditions and the following disclaimer in the
40*e3723e1fSApple OSS Distributions  *    documentation and/or other materials provided with the distribution.
41*e3723e1fSApple OSS Distributions  * 3. All advertising materials mentioning features or use of this software
42*e3723e1fSApple OSS Distributions  *    must display the following acknowledgement:
43*e3723e1fSApple OSS Distributions  *	This product includes software developed by the University of
44*e3723e1fSApple OSS Distributions  *	California, Berkeley and its contributors.
45*e3723e1fSApple OSS Distributions  * 4. Neither the name of the University nor the names of its contributors
46*e3723e1fSApple OSS Distributions  *    may be used to endorse or promote products derived from this software
47*e3723e1fSApple OSS Distributions  *    without specific prior written permission.
48*e3723e1fSApple OSS Distributions  *
49*e3723e1fSApple OSS Distributions  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50*e3723e1fSApple OSS Distributions  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51*e3723e1fSApple OSS Distributions  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52*e3723e1fSApple OSS Distributions  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53*e3723e1fSApple OSS Distributions  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54*e3723e1fSApple OSS Distributions  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55*e3723e1fSApple OSS Distributions  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56*e3723e1fSApple OSS Distributions  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57*e3723e1fSApple OSS Distributions  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58*e3723e1fSApple OSS Distributions  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59*e3723e1fSApple OSS Distributions  * SUCH DAMAGE.
60*e3723e1fSApple OSS Distributions  *
61*e3723e1fSApple OSS Distributions  *	@(#)msgbuf.h	8.1 (Berkeley) 6/2/93
62*e3723e1fSApple OSS Distributions  */
63*e3723e1fSApple OSS Distributions #ifndef _SYS_MSGBUF_H_
64*e3723e1fSApple OSS Distributions #define _SYS_MSGBUF_H_
65*e3723e1fSApple OSS Distributions 
66*e3723e1fSApple OSS Distributions #include <sys/cdefs.h>
67*e3723e1fSApple OSS Distributions 
68*e3723e1fSApple OSS Distributions #define MAX_MSG_BSIZE   (1*1024*1024)
69*e3723e1fSApple OSS Distributions struct  msgbuf {
70*e3723e1fSApple OSS Distributions #define MSG_MAGIC       0x063061
71*e3723e1fSApple OSS Distributions 	int             msg_magic;
72*e3723e1fSApple OSS Distributions 	int             msg_size;
73*e3723e1fSApple OSS Distributions 	int             msg_bufx;               /* write pointer */
74*e3723e1fSApple OSS Distributions 	int             msg_bufr;               /* read pointer */
75*e3723e1fSApple OSS Distributions 	char    *msg_bufc;              /* buffer */
76*e3723e1fSApple OSS Distributions };
77*e3723e1fSApple OSS Distributions 
78*e3723e1fSApple OSS Distributions #ifdef XNU_KERNEL_PRIVATE
79*e3723e1fSApple OSS Distributions __BEGIN_DECLS
80*e3723e1fSApple OSS Distributions extern struct   msgbuf *msgbufp;
81*e3723e1fSApple OSS Distributions extern struct   msgbuf *aslbufp;
82*e3723e1fSApple OSS Distributions extern void log_putc(char);
83*e3723e1fSApple OSS Distributions extern void log_putc_locked(struct msgbuf *, char);
84*e3723e1fSApple OSS Distributions extern int log_dmesg(user_addr_t, uint32_t, int32_t *);
85*e3723e1fSApple OSS Distributions __END_DECLS
86*e3723e1fSApple OSS Distributions #endif /* XNU_KERNEL_PRIVATE */
87*e3723e1fSApple OSS Distributions 
88*e3723e1fSApple OSS Distributions #endif  /* !_SYS_MSGBUF_H_ */
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