2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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33 * @(#)mman.h 8.2 (Berkeley) 1/9/95
40 #include <sys/cdefs.h>
41 #include <sys/_types.h>
45 * Inheritance for minherit()
47 #define INHERIT_SHARE 0
48 #define INHERIT_COPY 1
49 #define INHERIT_NONE 2
53 * Protections are chosen from these bits, or-ed together
55 #define PROT_NONE 0x00 /* no permissions */
56 #define PROT_READ 0x01 /* pages can be read */
57 #define PROT_WRITE 0x02 /* pages can be written */
58 #define PROT_EXEC 0x04 /* pages can be executed */
61 * Flags contain sharing type and options.
62 * Sharing types; choose one.
64 #define MAP_SHARED 0x0001 /* share changes */
65 #define MAP_PRIVATE 0x0002 /* changes are private */
66 #define MAP_COPY MAP_PRIVATE /* Obsolete */
72 #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */
73 #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */
74 #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */
75 #define MAP_RESERVED0080 0x0080 /* previously misimplemented MAP_INHERIT */
76 #define MAP_RESERVED0100 0x0100 /* previously unimplemented MAP_NOEXTEND */
77 #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */
78 #define MAP_STACK 0x0400 /* region grows down, like a stack */
79 #define MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */
84 #define MAP_FILE 0x0000 /* map from file (default) */
85 #define MAP_ANON 0x1000 /* allocated from memory, swap space */
90 #define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */
91 #endif /* __BSD_VISIBLE */
93 #if __POSIX_VISIBLE >= 199309
95 * Process memory locking
97 #define MCL_CURRENT 0x0001 /* Lock only current memory */
98 #define MCL_FUTURE 0x0002 /* Lock all future memory as well */
102 * Error return from mmap()
104 #define MAP_FAILED ((void *)-1)
109 #define MS_SYNC 0x0000 /* msync synchronously */
110 #define MS_ASYNC 0x0001 /* return immediately */
111 #define MS_INVALIDATE 0x0002 /* invalidate all cached data */
117 #define MADV_NORMAL 0 /* no further special treatment */
118 #define MADV_RANDOM 1 /* expect random page references */
119 #define MADV_SEQUENTIAL 2 /* expect sequential page references */
120 #define MADV_WILLNEED 3 /* will need these pages */
121 #define MADV_DONTNEED 4 /* dont need these pages */
122 #define MADV_FREE 5 /* dont need these pages, and junk contents */
123 #define MADV_NOSYNC 6 /* try to avoid flushes to physical media */
124 #define MADV_AUTOSYNC 7 /* revert to default flushing strategy */
125 #define MADV_NOCORE 8 /* do not include these pages in a core file */
126 #define MADV_CORE 9 /* revert to including pages in a core file */
127 #define MADV_PROTECT 10 /* protect process from pageout kill */
130 * Return bits from mincore
132 #define MINCORE_INCORE 0x1 /* Page is incore */
133 #define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */
134 #define MINCORE_MODIFIED 0x4 /* Page has been modified by us */
135 #define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */
136 #define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */
137 #endif /* __BSD_VISIBLE */
140 * XXX missing POSIX_TYPED_MEM_* macros and
141 * posix_typed_mem_info structure.
143 #if __POSIX_VISIBLE >= 200112
144 #define POSIX_MADV_NORMAL MADV_NORMAL
145 #define POSIX_MADV_RANDOM MADV_RANDOM
146 #define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL
147 #define POSIX_MADV_WILLNEED MADV_WILLNEED
148 #define POSIX_MADV_DONTNEED MADV_DONTNEED
151 #ifndef _MODE_T_DECLARED
152 typedef __mode_t mode_t;
153 #define _MODE_T_DECLARED
156 #ifndef _OFF_T_DECLARED
157 typedef __off_t off_t;
158 #define _OFF_T_DECLARED
161 #ifndef _SIZE_T_DECLARED
162 typedef __size_t size_t;
163 #define _SIZE_T_DECLARED
170 * XXX not yet implemented: mlockall(), munlockall(),
171 * posix_mem_offset(), posix_typed_mem_get_info(), posix_typed_mem_open().
174 int madvise(void *, size_t, int);
175 int mincore(const void *, size_t, char *);
176 int minherit(void *, size_t, int);
178 int mlock(const void *, size_t);
179 #ifndef _MMAP_DECLARED
180 #define _MMAP_DECLARED
181 void * mmap(void *, size_t, int, int, int, off_t);
183 int mprotect(const void *, size_t, int);
184 int msync(void *, size_t, int);
185 int munlock(const void *, size_t);
186 int munmap(void *, size_t);
187 #if __POSIX_VISIBLE >= 200112
188 int posix_madvise(void *, size_t, int);
190 #if __POSIX_VISIBLE >= 199309
192 int munlockall(void);
193 int shm_open(const char *, int, mode_t);
194 int shm_unlink(const char *);
198 #endif /* !_KERNEL */
200 #endif /* !_SYS_MMAN_H_ */