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 #define MAP_COPY MAP_PRIVATE /* Obsolete */ 63 64 #if __BSD_VISIBLE 65 /* 66 * Other flags 67 */ 68 #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 69 #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 70 #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 71 #define MAP_RESERVED0080 0x0080 /* previously misimplemented MAP_INHERIT */ 72 #define MAP_RESERVED0100 0x0100 /* previously unimplemented MAP_NOEXTEND */ 73 #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 74 #define MAP_STACK 0x0400 /* region grows down, like a stack */ 75 #define MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */ 76 77 /* 78 * Mapping type 79 */ 80 #define MAP_FILE 0x0000 /* map from file (default) */ 81 #define MAP_ANON 0x1000 /* allocated from memory, swap space */ 82 83 /* 84 * Extended flags 85 */ 86 #define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */ 87 #endif /* __BSD_VISIBLE */ 88 89 #if __POSIX_VISIBLE >= 199309 90 /* 91 * Process memory locking 92 */ 93 #define MCL_CURRENT 0x0001 /* Lock only current memory */ 94 #define MCL_FUTURE 0x0002 /* Lock all future memory as well */ 95 #endif 96 97 /* 98 * Error return from mmap() 99 */ 100 #define MAP_FAILED ((void *)-1) 101 102 /* 103 * msync() flags 104 */ 105 #define MS_SYNC 0x0000 /* msync synchronously */ 106 #define MS_ASYNC 0x0001 /* return immediately */ 107 #define MS_INVALIDATE 0x0002 /* invalidate all cached data */ 108 109 #if __BSD_VISIBLE 110 /* 111 * Advice to madvise 112 */ 113 #define MADV_NORMAL 0 /* no further special treatment */ 114 #define MADV_RANDOM 1 /* expect random page references */ 115 #define MADV_SEQUENTIAL 2 /* expect sequential page references */ 116 #define MADV_WILLNEED 3 /* will need these pages */ 117 #define MADV_DONTNEED 4 /* dont need these pages */ 118 #define MADV_FREE 5 /* dont need these pages, and junk contents */ 119 #define MADV_NOSYNC 6 /* try to avoid flushes to physical media */ 120 #define MADV_AUTOSYNC 7 /* revert to default flushing strategy */ 121 #define MADV_NOCORE 8 /* do not include these pages in a core file */ 122 #define MADV_CORE 9 /* revert to including pages in a core file */ 123 #define MADV_PROTECT 10 /* protect process from pageout kill */ 124 125 /* 126 * Return bits from mincore 127 */ 128 #define MINCORE_INCORE 0x1 /* Page is incore */ 129 #define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ 130 #define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ 131 #define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ 132 #define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ 133 #endif /* __BSD_VISIBLE */ 134 135 /* 136 * XXX missing POSIX_TYPED_MEM_* macros and 137 * posix_typed_mem_info structure. 138 */ 139 #if __POSIX_VISIBLE >= 200112 140 #define POSIX_MADV_NORMAL MADV_NORMAL 141 #define POSIX_MADV_RANDOM MADV_RANDOM 142 #define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL 143 #define POSIX_MADV_WILLNEED MADV_WILLNEED 144 #define POSIX_MADV_DONTNEED MADV_DONTNEED 145 #endif 146 147 #ifndef _MODE_T_DECLARED 148 typedef __mode_t mode_t; 149 #define _MODE_T_DECLARED 150 #endif 151 152 #ifndef _OFF_T_DECLARED 153 typedef __off_t off_t; 154 #define _OFF_T_DECLARED 155 #endif 156 157 #ifndef _SIZE_T_DECLARED 158 typedef __size_t size_t; 159 #define _SIZE_T_DECLARED 160 #endif 161 162 #ifndef _KERNEL 163 164 __BEGIN_DECLS 165 /* 166 * XXX not yet implemented: posix_mem_offset(), posix_typed_mem_get_info(), 167 * posix_typed_mem_open(). 168 */ 169 #if __BSD_VISIBLE 170 int madvise(void *, size_t, int); 171 int mincore(const void *, size_t, char *); 172 int minherit(void *, size_t, int); 173 #endif 174 int mlock(const void *, size_t); 175 #ifndef _MMAP_DECLARED 176 #define _MMAP_DECLARED 177 void * mmap(void *, size_t, int, int, int, off_t); 178 #endif 179 int mprotect(const void *, size_t, int); 180 int msync(void *, size_t, int); 181 int munlock(const void *, size_t); 182 int munmap(void *, size_t); 183 #if __POSIX_VISIBLE >= 200112 184 int posix_madvise(void *, size_t, int); 185 #endif 186 #if __POSIX_VISIBLE >= 199309 187 int mlockall(int); 188 int munlockall(void); 189 int shm_open(const char *, int, mode_t); 190 int shm_unlink(const char *); 191 #endif 192 __END_DECLS 193 194 #endif /* !_KERNEL */ 195 196 #endif /* !_SYS_MMAN_H_ */ 197