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 #include <sys/cdefs.h> 37 #include <machine/stdint.h> 38 39 #ifndef _MODE_T_DECLARED 40 #define _MODE_T_DECLARED 41 typedef __uint16_t mode_t; /* permissions */ 42 #endif 43 44 #ifndef _OFF_T_DECLARED 45 #define _OFF_T_DECLARED 46 typedef __off_t off_t; 47 #endif 48 49 #ifndef _SIZE_T_DECLARED 50 #define _SIZE_T_DECLARED 51 typedef __size_t size_t; 52 #endif 53 54 #if __BSD_VISIBLE 55 /* 56 * Inheritance for minherit() 57 */ 58 #define INHERIT_SHARE 0 59 #define INHERIT_COPY 1 60 #define INHERIT_NONE 2 61 #endif 62 63 /* 64 * Protections are chosen from these bits, or-ed together 65 */ 66 #define PROT_NONE 0x00 /* no permissions */ 67 #define PROT_READ 0x01 /* pages can be read */ 68 #define PROT_WRITE 0x02 /* pages can be written */ 69 #define PROT_EXEC 0x04 /* pages can be executed */ 70 71 /* 72 * Flags contain sharing type and options. 73 * Sharing types; choose one. 74 */ 75 #define MAP_SHARED 0x0001 /* share changes */ 76 #define MAP_PRIVATE 0x0002 /* changes are private */ 77 #if __BSD_VISIBLE 78 #define MAP_COPY MAP_PRIVATE /* Obsolete */ 79 #endif 80 81 /* 82 * Other flags 83 */ 84 #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 85 #if __BSD_VISIBLE 86 #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 87 #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 88 #define MAP_INHERIT 0x0080 /* region is retained after exec */ 89 #define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ 90 #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 91 #define MAP_STACK 0x0400 /* region grows down, like a stack */ 92 #define MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */ 93 94 /* 95 * Mapping type 96 */ 97 #define MAP_FILE 0x0000 /* map from file (default) */ 98 #define MAP_ANON 0x1000 /* allocated from memory, swap space */ 99 #define MAP_ANONYMOUS MAP_ANON /* alias for compatibility */ 100 #define MAP_VPAGETABLE 0x2000 /* manage with virtualized page table */ 101 102 /* 103 * Extended flags 104 */ 105 #define MAP_TRYFIXED 0x00010000 /* attempt hint address, even within heap */ 106 #define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */ 107 #define MAP_SIZEALIGN 0x00040000 /* size is also an alignment requirement */ 108 #endif /* __BSD_VISIBLE */ 109 110 #if __POSIX_VISIBLE >= 199309 111 /* 112 * Process memory locking 113 */ 114 #define MCL_CURRENT 0x0001 /* Lock only current memory */ 115 #define MCL_FUTURE 0x0002 /* Lock all future memory as well */ 116 #endif /* __POSIX_VISIBLE >= 199309 */ 117 118 /* 119 * Error return from mmap() 120 */ 121 #define MAP_FAILED ((void *)-1) 122 123 /* 124 * msync() flags 125 */ 126 #define MS_SYNC 0x0000 /* msync synchronously */ 127 #define MS_ASYNC 0x0001 /* return immediately */ 128 #define MS_INVALIDATE 0x0002 /* invalidate all cached data */ 129 130 /* 131 * Advice to madvise 132 */ 133 #define _MADV_NORMAL 0 /* no further special treatment */ 134 #define _MADV_RANDOM 1 /* expect random page references */ 135 #define _MADV_SEQUENTIAL 2 /* expect sequential page references */ 136 #define _MADV_WILLNEED 3 /* will need these pages */ 137 #define _MADV_DONTNEED 4 /* dont need these pages */ 138 139 #if __BSD_VISIBLE 140 #define MADV_NORMAL _MADV_NORMAL 141 #define MADV_RANDOM _MADV_RANDOM 142 #define MADV_SEQUENTIAL _MADV_SEQUENTIAL 143 #define MADV_WILLNEED _MADV_WILLNEED 144 #define MADV_DONTNEED _MADV_DONTNEED 145 #define MADV_FREE 5 /* dont need these pages, and junk contents */ 146 #define MADV_NOSYNC 6 /* try to avoid flushes to physical media */ 147 #define MADV_AUTOSYNC 7 /* revert to default flushing strategy */ 148 #define MADV_NOCORE 8 /* do not include these pages in a core file */ 149 #define MADV_CORE 9 /* revert to including pages in a core file */ 150 #define MADV_INVAL 10 /* virt page tables have changed, inval pmap */ 151 #define MADV_SETMAP 11 /* set page table directory page for map */ 152 #endif 153 154 /* 155 * Advice to posix_madvise() 156 */ 157 #if __POSIX_VISIBLE >= 200112 158 #define POSIX_MADV_NORMAL _MADV_NORMAL 159 #define POSIX_MADV_RANDOM _MADV_RANDOM 160 #define POSIX_MADV_SEQUENTIAL _MADV_SEQUENTIAL 161 #define POSIX_MADV_WILLNEED _MADV_WILLNEED 162 #define POSIX_MADV_DONTNEED _MADV_DONTNEED 163 #endif 164 165 #if __BSD_VISIBLE 166 /* 167 * mcontrol() must be used for these functions instead of madvise() 168 */ 169 #define MADV_CONTROL_START MADV_INVAL 170 #define MADV_CONTROL_END MADV_SETMAP 171 172 /* 173 * Return bits from mincore 174 */ 175 #define MINCORE_INCORE 0x1 /* Page is incore */ 176 #define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ 177 #define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ 178 #define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ 179 #define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ 180 #define MINCORE_SUPER 0x20 /* Page is a "super" page */ 181 #endif 182 183 __BEGIN_DECLS 184 #if __POSIX_VISIBLE >= 199309 185 int mlockall(int); 186 int munlockall(void); 187 int shm_open(const char *, int, mode_t); 188 int shm_unlink(const char *); 189 #endif /* __POSIX_VISIBLE >= 199309 */ 190 int mlock(const void *, size_t); 191 void * mmap(void *, size_t, int, int, int, off_t); 192 int mprotect(void *, size_t, int); 193 int msync(void *, size_t, int); 194 int munlock(const void *, size_t); 195 int munmap(void *, size_t); 196 #if __POSIX_VISIBLE >= 200112 197 int posix_madvise(void *, size_t, int); 198 #endif 199 #if __BSD_VISIBLE 200 int madvise(void *, size_t, int); 201 int mcontrol(void *, size_t, int, off_t); 202 int mincore(const void *, size_t, char *); 203 int minherit(void *, size_t, int); 204 #endif 205 __END_DECLS 206 207 #endif 208