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 * 4. 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 * $FreeBSD$ 31 */ 32 33 #ifndef _SYS_MMAN_H_ 34 #define _SYS_MMAN_H_ 35 36 #include <sys/cdefs.h> 37 #include <sys/_types.h> 38 39 #if __BSD_VISIBLE 40 /* 41 * Inheritance for minherit() 42 */ 43 #define INHERIT_SHARE 0 44 #define INHERIT_COPY 1 45 #define INHERIT_NONE 2 46 #endif 47 48 /* 49 * Protections are chosen from these bits, or-ed together 50 */ 51 #define PROT_NONE 0x00 /* no permissions */ 52 #define PROT_READ 0x01 /* pages can be read */ 53 #define PROT_WRITE 0x02 /* pages can be written */ 54 #define PROT_EXEC 0x04 /* pages can be executed */ 55 56 /* 57 * Flags contain sharing type and options. 58 * Sharing types; choose one. 59 */ 60 #define MAP_SHARED 0x0001 /* share changes */ 61 #define MAP_PRIVATE 0x0002 /* changes are private */ 62 #if __BSD_VISIBLE 63 #define MAP_COPY MAP_PRIVATE /* Obsolete */ 64 #endif 65 66 /* 67 * Other flags 68 */ 69 #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 70 71 #if __BSD_VISIBLE 72 #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 73 #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 74 #define MAP_RESERVED0080 0x0080 /* previously misimplemented MAP_INHERIT */ 75 #define MAP_RESERVED0100 0x0100 /* previously unimplemented MAP_NOEXTEND */ 76 #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 77 #define MAP_STACK 0x0400 /* region grows down, like a stack */ 78 #define MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */ 79 80 /* 81 * Mapping type 82 */ 83 #define MAP_FILE 0x0000 /* map from file (default) */ 84 #define MAP_ANON 0x1000 /* allocated from memory, swap space */ 85 86 /* 87 * Extended flags 88 */ 89 #define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */ 90 #endif /* __BSD_VISIBLE */ 91 92 #if __POSIX_VISIBLE >= 199309 93 /* 94 * Process memory locking 95 */ 96 #define MCL_CURRENT 0x0001 /* Lock only current memory */ 97 #define MCL_FUTURE 0x0002 /* Lock all future memory as well */ 98 #endif 99 100 /* 101 * Error return from mmap() 102 */ 103 #define MAP_FAILED ((void *)-1) 104 105 /* 106 * msync() flags 107 */ 108 #define MS_SYNC 0x0000 /* msync synchronously */ 109 #define MS_ASYNC 0x0001 /* return immediately */ 110 #define MS_INVALIDATE 0x0002 /* invalidate all cached data */ 111 112 /* 113 * Advice to madvise 114 */ 115 #define _MADV_NORMAL 0 /* no further special treatment */ 116 #define _MADV_RANDOM 1 /* expect random page references */ 117 #define _MADV_SEQUENTIAL 2 /* expect sequential page references */ 118 #define _MADV_WILLNEED 3 /* will need these pages */ 119 #define _MADV_DONTNEED 4 /* dont need these pages */ 120 121 #if __BSD_VISIBLE 122 #define MADV_NORMAL _MADV_NORMAL 123 #define MADV_RANDOM _MADV_RANDOM 124 #define MADV_SEQUENTIAL _MADV_SEQUENTIAL 125 #define MADV_WILLNEED _MADV_WILLNEED 126 #define MADV_DONTNEED _MADV_DONTNEED 127 #define MADV_FREE 5 /* dont need these pages, and junk contents */ 128 #define MADV_NOSYNC 6 /* try to avoid flushes to physical media */ 129 #define MADV_AUTOSYNC 7 /* revert to default flushing strategy */ 130 #define MADV_NOCORE 8 /* do not include these pages in a core file */ 131 #define MADV_CORE 9 /* revert to including pages in a core file */ 132 #define MADV_PROTECT 10 /* protect process from pageout kill */ 133 134 /* 135 * Return bits from mincore 136 */ 137 #define MINCORE_INCORE 0x1 /* Page is incore */ 138 #define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ 139 #define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ 140 #define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ 141 #define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ 142 #endif /* __BSD_VISIBLE */ 143 144 /* 145 * XXX missing POSIX_TYPED_MEM_* macros and 146 * posix_typed_mem_info structure. 147 */ 148 #if __POSIX_VISIBLE >= 200112 149 #define POSIX_MADV_NORMAL _MADV_NORMAL 150 #define POSIX_MADV_RANDOM _MADV_RANDOM 151 #define POSIX_MADV_SEQUENTIAL _MADV_SEQUENTIAL 152 #define POSIX_MADV_WILLNEED _MADV_WILLNEED 153 #define POSIX_MADV_DONTNEED _MADV_DONTNEED 154 #endif 155 156 #ifndef _MODE_T_DECLARED 157 typedef __mode_t mode_t; 158 #define _MODE_T_DECLARED 159 #endif 160 161 #ifndef _OFF_T_DECLARED 162 typedef __off_t off_t; 163 #define _OFF_T_DECLARED 164 #endif 165 166 #ifndef _SIZE_T_DECLARED 167 typedef __size_t size_t; 168 #define _SIZE_T_DECLARED 169 #endif 170 171 #ifndef _KERNEL 172 173 __BEGIN_DECLS 174 /* 175 * XXX not yet implemented: posix_mem_offset(), posix_typed_mem_get_info(), 176 * posix_typed_mem_open(). 177 */ 178 #if __BSD_VISIBLE 179 int madvise(void *, size_t, int); 180 int mincore(const void *, size_t, char *); 181 int minherit(void *, size_t, int); 182 #endif 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(const 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 __POSIX_VISIBLE >= 199309 196 int mlockall(int); 197 int munlockall(void); 198 int shm_open(const char *, int, mode_t); 199 int shm_unlink(const char *); 200 #endif 201 __END_DECLS 202 203 #endif /* !_KERNEL */ 204 205 #endif /* !_SYS_MMAN_H_ */ 206