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 1.29.2.1 2001/08/25 07:25:43 dillon Exp $ 35 */ 36 37 #ifndef _SYS_MMAN_H_ 38 #define _SYS_MMAN_H_ 39 40 #ifndef _SYS_TYPES_H_ 41 #include <sys/types.h> 42 #endif 43 #ifndef _SYS_CDEFS_H_ 44 #include <sys/cdefs.h> 45 #endif 46 47 #if __BSD_VISIBLE 48 /* 49 * Inheritance for minherit() 50 */ 51 #define INHERIT_SHARE 0 52 #define INHERIT_COPY 1 53 #define INHERIT_NONE 2 54 #endif 55 56 /* 57 * Protections are chosen from these bits, or-ed together 58 */ 59 #define PROT_NONE 0x00 /* no permissions */ 60 #define PROT_READ 0x01 /* pages can be read */ 61 #define PROT_WRITE 0x02 /* pages can be written */ 62 #define PROT_EXEC 0x04 /* pages can be executed */ 63 64 /* 65 * Flags contain sharing type and options. 66 * Sharing types; choose one. 67 */ 68 #define MAP_SHARED 0x0001 /* share changes */ 69 #define MAP_PRIVATE 0x0002 /* changes are private */ 70 #if __BSD_VISIBLE 71 #define MAP_COPY MAP_PRIVATE /* Obsolete */ 72 #endif 73 74 /* 75 * Other flags 76 */ 77 #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 78 #if __BSD_VISIBLE 79 #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 80 #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 81 #define MAP_INHERIT 0x0080 /* region is retained after exec */ 82 #define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ 83 #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 84 #define MAP_STACK 0x0400 /* region grows down, like a stack */ 85 #define MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */ 86 87 /* 88 * Mapping type 89 */ 90 #define MAP_FILE 0x0000 /* map from file (default) */ 91 #define MAP_ANON 0x1000 /* allocated from memory, swap space */ 92 #define MAP_ANONYMOUS MAP_ANON /* alias for compatibility */ 93 #define MAP_VPAGETABLE 0x2000 /* manage with virtualized page table */ 94 95 /* 96 * Extended flags 97 */ 98 #define MAP_TRYFIXED 0x00010000 /* attempt hint address, even within heap */ 99 #define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */ 100 #define MAP_SIZEALIGN 0x00040000 /* size is also an alignment requirement */ 101 #endif /* __BSD_VISIBLE */ 102 103 #if __POSIX_VISIBLE >= 199309 104 /* 105 * Process memory locking 106 */ 107 #define MCL_CURRENT 0x0001 /* Lock only current memory */ 108 #define MCL_FUTURE 0x0002 /* Lock all future memory as well */ 109 #endif /* __POSIX_VISIBLE >= 199309 */ 110 111 /* 112 * Error return from mmap() 113 */ 114 #define MAP_FAILED ((void *)-1) 115 116 /* 117 * msync() flags 118 */ 119 #define MS_SYNC 0x0000 /* msync synchronously */ 120 #define MS_ASYNC 0x0001 /* return immediately */ 121 #define MS_INVALIDATE 0x0002 /* invalidate all cached data */ 122 123 /* 124 * Advice to madvise 125 */ 126 #define _MADV_NORMAL 0 /* no further special treatment */ 127 #define _MADV_RANDOM 1 /* expect random page references */ 128 #define _MADV_SEQUENTIAL 2 /* expect sequential page references */ 129 #define _MADV_WILLNEED 3 /* will need these pages */ 130 #define _MADV_DONTNEED 4 /* dont need these pages */ 131 132 #if __BSD_VISIBLE 133 #define MADV_NORMAL _MADV_NORMAL 134 #define MADV_RANDOM _MADV_RANDOM 135 #define MADV_SEQUENTIAL _MADV_SEQUENTIAL 136 #define MADV_WILLNEED _MADV_WILLNEED 137 #define MADV_DONTNEED _MADV_DONTNEED 138 #define MADV_FREE 5 /* dont need these pages, and junk contents */ 139 #define MADV_NOSYNC 6 /* try to avoid flushes to physical media */ 140 #define MADV_AUTOSYNC 7 /* revert to default flushing strategy */ 141 #define MADV_NOCORE 8 /* do not include these pages in a core file */ 142 #define MADV_CORE 9 /* revert to including pages in a core file */ 143 #define MADV_INVAL 10 /* virt page tables have changed, inval pmap */ 144 #define MADV_SETMAP 11 /* set page table directory page for map */ 145 #endif 146 147 /* 148 * Advice to posix_madvise() 149 */ 150 #if __POSIX_VISIBLE >= 200112 151 #define POSIX_MADV_NORMAL _MADV_NORMAL 152 #define POSIX_MADV_RANDOM _MADV_RANDOM 153 #define POSIX_MADV_SEQUENTIAL _MADV_SEQUENTIAL 154 #define POSIX_MADV_WILLNEED _MADV_WILLNEED 155 #define POSIX_MADV_DONTNEED _MADV_DONTNEED 156 #endif 157 158 #if __BSD_VISIBLE 159 /* 160 * mcontrol() must be used for these functions instead of madvise() 161 */ 162 #define MADV_CONTROL_START MADV_INVAL 163 #define MADV_CONTROL_END MADV_SETMAP 164 165 /* 166 * Return bits from mincore 167 */ 168 #define MINCORE_INCORE 0x1 /* Page is incore */ 169 #define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ 170 #define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ 171 #define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ 172 #define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ 173 #define MINCORE_SUPER 0x20 /* Page is a "super" page */ 174 #endif 175 176 __BEGIN_DECLS 177 #if __POSIX_VISIBLE >= 199309 178 int mlockall(int); 179 int munlockall(void); 180 int shm_open(const char *, int, mode_t); 181 int shm_unlink(const char *); 182 #endif /* __POSIX_VISIBLE >= 199309 */ 183 int mlock(const void *, size_t); 184 #ifndef _MMAP_DECLARED 185 #define _MMAP_DECLARED 186 void * mmap(void *, size_t, int, int, int, off_t); 187 #endif 188 int mprotect(void *, size_t, int); 189 int msync(void *, size_t, int); 190 int munlock(const void *, size_t); 191 int munmap(void *, size_t); 192 #if __POSIX_VISIBLE >= 200112 193 int posix_madvise(void *, size_t, int); 194 #endif 195 #if __BSD_VISIBLE 196 int madvise(void *, size_t, int); 197 int mcontrol(void *, size_t, int, off_t); 198 int mincore(const void *, size_t, char *); 199 int minherit(void *, size_t, int); 200 #endif 201 __END_DECLS 202 203 #endif 204