FreeBSD/Linux Kernel Cross Reference
sys/sys/mman.h
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 8.2 (Berkeley) 1/9/95
34 * $FreeBSD: src/sys/sys/mman.h,v 1.14.2.3 1999/09/05 08:22:37 peter Exp $
35 */
36
37 #ifndef _SYS_MMAN_H_
38 #define _SYS_MMAN_H_
39
40 /*
41 * Error return from mmap()
42 */
43 #define MAP_FAILED ((caddr_t)-1)
44
45 /*
46 * Protections are chosen from these bits, or-ed together
47 */
48 #define PROT_NONE 0x00 /* no permissions */
49 #define PROT_READ 0x01 /* pages can be read */
50 #define PROT_WRITE 0x02 /* pages can be written */
51 #define PROT_EXEC 0x04 /* pages can be executed */
52
53 /*
54 * Flags contain sharing type and options.
55 * Sharing types; choose one.
56 */
57 #define MAP_SHARED 0x0001 /* share changes */
58 #define MAP_PRIVATE 0x0002 /* changes are private */
59 #define MAP_COPY MAP_PRIVATE /* Obsolete */
60
61 /*
62 * Other flags
63 */
64 #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */
65 #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */
66 #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */
67 #define MAP_INHERIT 0x0080 /* region is retained after exec */
68 #define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */
69 #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */
70
71 /*
72 * msync() flags
73 */
74 #define MS_SYNC 0x0000 /* msync synchronously */
75 #define MS_ASYNC 0x0001 /* return immediately */
76 #define MS_INVALIDATE 0x0002 /* invalidate all cached data */
77
78 /*
79 * Mapping type
80 */
81 #define MAP_FILE 0x0000 /* map from file (default) */
82 #define MAP_ANON 0x1000 /* allocated from memory, swap space */
83
84 /*
85 * Advice to madvise
86 */
87 #define MADV_NORMAL 0 /* no further special treatment */
88 #define MADV_RANDOM 1 /* expect random page references */
89 #define MADV_SEQUENTIAL 2 /* expect sequential page references */
90 #define MADV_WILLNEED 3 /* will need these pages */
91 #define MADV_DONTNEED 4 /* dont need these pages */
92 #define MADV_FREE 5 /* dont need these pages, and junk contents */
93
94 /*
95 * Return bits from mincore
96 */
97 #define MINCORE_INCORE 0x1 /* Page is incore */
98 #define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */
99 #define MINCORE_MODIFIED 0x4 /* Page has been modified by us */
100 #define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */
101 #define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */
102
103 #ifndef KERNEL
104
105 #include <sys/cdefs.h>
106
107 __BEGIN_DECLS
108 #ifndef _MMAP_DECLARED
109 #define _MMAP_DECLARED
110 caddr_t mmap __P((caddr_t, size_t, int, int, int, off_t));
111 #endif
112 int mprotect __P((caddr_t, size_t, int));
113 int munmap __P((caddr_t, size_t));
114 int msync __P((caddr_t, size_t, int));
115 int mlock __P((caddr_t, size_t));
116 int munlock __P((caddr_t, size_t));
117 int madvise __P((caddr_t, size_t, int));
118 int mincore __P((caddr_t, size_t, char *));
119 int minherit __P((caddr_t, size_t, int));
120 __END_DECLS
121
122 #endif /* !KERNEL */
123
124 #endif
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