mman.h revision 12548 
1/*-
2 * Copyright (c) 1982, 1986, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	@(#)mman.h	8.1 (Berkeley) 6/2/93
34 * $Id: mman.h,v 1.8 1995/07/13 08:48:02 davidg Exp $
35 */
36
37#ifndef _SYS_MMAN_H_
38#define _SYS_MMAN_H_
39
40/*
41 * Protections are chosen from these bits, or-ed together
42 */
43#define	PROT_NONE	0x00	/* no access to pages */
44#define	PROT_READ	0x01	/* pages can be read */
45#define	PROT_WRITE	0x02	/* pages can be written */
46#define	PROT_EXEC	0x04	/* pages can be executed */
47
48/*
49 * Flags contain sharing type and options.
50 * Sharing types; choose one.
51 */
52#define	MAP_SHARED	0x0001		/* share changes */
53#define	MAP_PRIVATE	0x0002		/* changes are private */
54#define	MAP_COPY	MAP_PRIVATE	/* Obsolete */
55
56/*
57 * Other flags
58 */
59#define	MAP_FIXED	 0x0010	/* map addr must be exactly as requested */
60#define	MAP_RENAME	 0x0020	/* Sun: rename private pages to file */
61#define	MAP_NORESERVE	 0x0040	/* Sun: don't reserve needed swap area */
62#define	MAP_INHERIT	 0x0080	/* region is retained after exec */
63#define	MAP_NOEXTEND	 0x0100	/* for MAP_FILE, don't change file size */
64#define	MAP_HASSEMAPHORE 0x0200	/* region may contain semaphores */
65
66/*
67 * msync() flags
68 */
69#define MS_ASYNC	0x0001	/* return immediately */
70#define MS_INVALIDATE	0x0002	/* invalidate all cached data */
71
72/*
73 * Mapping type; default is map from file.
74 */
75#define MAP_FILE	0x0000	/* for backward source compatibility */
76#define	MAP_ANON	0x1000	/* allocated from memory, swap space */
77
78/*
79 * Advice to madvise
80 */
81#define	MADV_NORMAL	0	/* no further special treatment */
82#define	MADV_RANDOM	1	/* expect random page references */
83#define	MADV_SEQUENTIAL	2	/* expect sequential page references */
84#define	MADV_WILLNEED	3	/* will need these pages */
85#define	MADV_DONTNEED	4	/* dont need these pages */
86
87#ifndef KERNEL
88
89#include <sys/cdefs.h>
90
91__BEGIN_DECLS
92/* Some of these int's should probably be size_t's */
93caddr_t	mmap __P((caddr_t, size_t, int, int, int, off_t));
94int	madvise __P((caddr_t, int, int));
95int	mprotect __P((caddr_t, size_t, int));
96int	munmap __P((caddr_t, size_t));
97int	msync __P((caddr_t, size_t, int));
98int	mlock __P((caddr_t, size_t));
99int	munlock __P((caddr_t, size_t));
100__END_DECLS
101
102#endif /* !KERNEL */
103
104#endif
105