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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)mman.h 8.2 (Berkeley) 1/9/95 30 * $FreeBSD: src/sys/sys/mman.h,v 1.29.2.1 2001/08/25 07:25:43 dillon Exp $ 31 */ 32 33 #ifndef _SYS_MMAN_H_ 34 #define _SYS_MMAN_H_ 35 36 #ifndef _SYS_TYPES_H_ 37 #include <sys/types.h> 38 #endif 39 #ifndef _SYS_CDEFS_H_ 40 #include <sys/cdefs.h> 41 #endif 42 43 #if __BSD_VISIBLE 44 /* 45 * Inheritance for minherit() 46 */ 47 #define INHERIT_SHARE 0 48 #define INHERIT_COPY 1 49 #define INHERIT_NONE 2 50 #endif 51 52 /* 53 * Protections are chosen from these bits, or-ed together 54 */ 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 */ 59 60 /* 61 * Flags contain sharing type and options. 62 * Sharing types; choose one. 63 */ 64 #define MAP_SHARED 0x0001 /* share changes */ 65 #define MAP_PRIVATE 0x0002 /* changes are private */ 66 #if __BSD_VISIBLE 67 #define MAP_COPY MAP_PRIVATE /* Obsolete */ 68 #endif 69 70 /* 71 * Other flags 72 */ 73 #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 74 #if __BSD_VISIBLE 75 #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 76 #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 77 #define MAP_INHERIT 0x0080 /* region is retained after exec */ 78 #define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ 79 #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 80 #define MAP_STACK 0x0400 /* region grows down, like a stack */ 81 #define MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */ 82 83 /* 84 * Mapping type 85 */ 86 #define MAP_FILE 0x0000 /* map from file (default) */ 87 #define MAP_ANON 0x1000 /* allocated from memory, swap space */ 88 #define MAP_ANONYMOUS MAP_ANON /* alias for compatibility */ 89 #define MAP_VPAGETABLE 0x2000 /* manage with virtualized page table */ 90 91 /* 92 * Extended flags 93 */ 94 #define MAP_TRYFIXED 0x00010000 /* attempt hint address, even within heap */ 95 #define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */ 96 #define MAP_SIZEALIGN 0x00040000 /* size is also an alignment requirement */ 97 #endif /* __BSD_VISIBLE */ 98 99 #if __POSIX_VISIBLE >= 199309 100 /* 101 * Process memory locking 102 */ 103 #define MCL_CURRENT 0x0001 /* Lock only current memory */ 104 #define MCL_FUTURE 0x0002 /* Lock all future memory as well */ 105 #endif /* __POSIX_VISIBLE >= 199309 */ 106 107 /* 108 * Error return from mmap() 109 */ 110 #define MAP_FAILED ((void *)-1) 111 112 /* 113 * msync() flags 114 */ 115 #define MS_SYNC 0x0000 /* msync synchronously */ 116 #define MS_ASYNC 0x0001 /* return immediately */ 117 #define MS_INVALIDATE 0x0002 /* invalidate all cached data */ 118 119 /* 120 * Advice to madvise 121 */ 122 #define _MADV_NORMAL 0 /* no further special treatment */ 123 #define _MADV_RANDOM 1 /* expect random page references */ 124 #define _MADV_SEQUENTIAL 2 /* expect sequential page references */ 125 #define _MADV_WILLNEED 3 /* will need these pages */ 126 #define _MADV_DONTNEED 4 /* dont need these pages */ 127 128 #if __BSD_VISIBLE 129 #define MADV_NORMAL _MADV_NORMAL 130 #define MADV_RANDOM _MADV_RANDOM 131 #define MADV_SEQUENTIAL _MADV_SEQUENTIAL 132 #define MADV_WILLNEED _MADV_WILLNEED 133 #define MADV_DONTNEED _MADV_DONTNEED 134 #define MADV_FREE 5 /* dont need these pages, and junk contents */ 135 #define MADV_NOSYNC 6 /* try to avoid flushes to physical media */ 136 #define MADV_AUTOSYNC 7 /* revert to default flushing strategy */ 137 #define MADV_NOCORE 8 /* do not include these pages in a core file */ 138 #define MADV_CORE 9 /* revert to including pages in a core file */ 139 #define MADV_INVAL 10 /* virt page tables have changed, inval pmap */ 140 #define MADV_SETMAP 11 /* set page table directory page for map */ 141 #endif 142 143 /* 144 * Advice to posix_madvise() 145 */ 146 #if __POSIX_VISIBLE >= 200112 147 #define POSIX_MADV_NORMAL _MADV_NORMAL 148 #define POSIX_MADV_RANDOM _MADV_RANDOM 149 #define POSIX_MADV_SEQUENTIAL _MADV_SEQUENTIAL 150 #define POSIX_MADV_WILLNEED _MADV_WILLNEED 151 #define POSIX_MADV_DONTNEED _MADV_DONTNEED 152 #endif 153 154 #if __BSD_VISIBLE 155 /* 156 * mcontrol() must be used for these functions instead of madvise() 157 */ 158 #define MADV_CONTROL_START MADV_INVAL 159 #define MADV_CONTROL_END MADV_SETMAP 160 161 /* 162 * Return bits from mincore 163 */ 164 #define MINCORE_INCORE 0x1 /* Page is incore */ 165 #define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ 166 #define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ 167 #define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ 168 #define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ 169 #define MINCORE_SUPER 0x20 /* Page is a "super" page */ 170 #endif 171 172 __BEGIN_DECLS 173 #if __POSIX_VISIBLE >= 199309 174 int mlockall(int); 175 int munlockall(void); 176 int shm_open(const char *, int, mode_t); 177 int shm_unlink(const char *); 178 #endif /* __POSIX_VISIBLE >= 199309 */ 179 int mlock(const void *, size_t); 180 #ifndef _MMAP_DECLARED 181 #define _MMAP_DECLARED 182 void * mmap(void *, size_t, int, int, int, off_t); 183 #endif 184 int mprotect(void *, size_t, int); 185 int msync(void *, size_t, int); 186 int munlock(const void *, size_t); 187 int munmap(void *, size_t); 188 #if __POSIX_VISIBLE >= 200112 189 int posix_madvise(void *, size_t, int); 190 #endif 191 #if __BSD_VISIBLE 192 int madvise(void *, size_t, int); 193 int mcontrol(void *, size_t, int, off_t); 194 int mincore(const void *, size_t, char *); 195 int minherit(void *, size_t, int); 196 #endif 197 __END_DECLS 198 199 #endif 200