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__POSIX_H_ 41 #include <sys/_posix.h> 42 #endif 43 #ifndef _SYS_TYPES_H_ 44 #include <sys/types.h> 45 #endif 46 #ifndef _SYS_CDEFS_H_ 47 #include <sys/cdefs.h> 48 #endif 49 50 /* 51 * Inheritance for minherit() 52 */ 53 #define INHERIT_SHARE 0 54 #define INHERIT_COPY 1 55 #define INHERIT_NONE 2 56 57 /* 58 * Protections are chosen from these bits, or-ed together 59 */ 60 #define PROT_NONE 0x00 /* no permissions */ 61 #define PROT_READ 0x01 /* pages can be read */ 62 #define PROT_WRITE 0x02 /* pages can be written */ 63 #define PROT_EXEC 0x04 /* pages can be executed */ 64 65 /* 66 * Flags contain sharing type and options. 67 * Sharing types; choose one. 68 */ 69 #define MAP_SHARED 0x0001 /* share changes */ 70 #define MAP_PRIVATE 0x0002 /* changes are private */ 71 #define MAP_COPY MAP_PRIVATE /* Obsolete */ 72 73 /* 74 * Other flags 75 */ 76 #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 77 #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 78 #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 79 #define MAP_INHERIT 0x0080 /* region is retained after exec */ 80 #define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ 81 #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 82 #define MAP_STACK 0x0400 /* region grows down, like a stack */ 83 #define MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */ 84 85 #ifdef _P1003_1B_VISIBLE 86 /* 87 * Process memory locking 88 */ 89 #define MCL_CURRENT 0x0001 /* Lock only current memory */ 90 #define MCL_FUTURE 0x0002 /* Lock all future memory as well */ 91 92 #endif /* _P1003_1B_VISIBLE */ 93 94 /* 95 * Error return from mmap() 96 */ 97 #define MAP_FAILED ((void *)-1) 98 99 /* 100 * msync() flags 101 */ 102 #define MS_SYNC 0x0000 /* msync synchronously */ 103 #define MS_ASYNC 0x0001 /* return immediately */ 104 #define MS_INVALIDATE 0x0002 /* invalidate all cached data */ 105 106 107 /* 108 * Mapping type 109 */ 110 #define MAP_FILE 0x0000 /* map from file (default) */ 111 #define MAP_ANON 0x1000 /* allocated from memory, swap space */ 112 #define MAP_VPAGETABLE 0x2000 /* manage with virtualized page table */ 113 114 /* 115 * Extended flags 116 */ 117 #define MAP_TRYFIXED 0x00010000 /* attempt hint address, even within heap */ 118 #define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */ 119 #define MAP_SIZEALIGN 0x00040000 /* size is also an alignment requirement */ 120 121 /* 122 * Advice to madvise 123 */ 124 #define MADV_NORMAL 0 /* no further special treatment */ 125 #define MADV_RANDOM 1 /* expect random page references */ 126 #define MADV_SEQUENTIAL 2 /* expect sequential page references */ 127 #define MADV_WILLNEED 3 /* will need these pages */ 128 #define MADV_DONTNEED 4 /* dont need these pages */ 129 #define MADV_FREE 5 /* dont need these pages, and junk contents */ 130 #define MADV_NOSYNC 6 /* try to avoid flushes to physical media */ 131 #define MADV_AUTOSYNC 7 /* revert to default flushing strategy */ 132 #define MADV_NOCORE 8 /* do not include these pages in a core file */ 133 #define MADV_CORE 9 /* revert to including pages in a core file */ 134 #define MADV_INVAL 10 /* virt page tables have changed, inval pmap */ 135 #define MADV_SETMAP 11 /* set page table directory page for map */ 136 137 /* 138 * Advice to posix_madvise() 139 */ 140 #if __POSIX_VISIBLE >= 200112 141 #define POSIX_MADV_NORMAL MADV_NORMAL 142 #define POSIX_MADV_RANDOM MADV_RANDOM 143 #define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL 144 #define POSIX_MADV_WILLNEED MADV_WILLNEED 145 #define POSIX_MADV_DONTNEED MADV_DONTNEED 146 #endif 147 148 /* 149 * mcontrol() must be used for these functions instead of madvise() 150 */ 151 #define MADV_CONTROL_START MADV_INVAL 152 #define MADV_CONTROL_END MADV_SETMAP 153 154 /* 155 * Return bits from mincore 156 */ 157 #define MINCORE_INCORE 0x1 /* Page is incore */ 158 #define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ 159 #define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ 160 #define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ 161 #define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ 162 #define MINCORE_SUPER 0x20 /* Page is a "super" page */ 163 164 __BEGIN_DECLS 165 #ifdef _P1003_1B_VISIBLE 166 int mlockall (int); 167 int munlockall (void); 168 int shm_open (const char *, int, mode_t); 169 int shm_unlink (const char *); 170 #endif /* _P1003_1B_VISIBLE */ 171 int mlock (const void *, size_t); 172 #ifndef _MMAP_DECLARED 173 #define _MMAP_DECLARED 174 void * mmap (void *, size_t, int, int, int, off_t); 175 #endif 176 int mprotect (void *, size_t, int); 177 int msync (void *, size_t, int); 178 int munlock (const void *, size_t); 179 int munmap (void *, size_t); 180 #if __POSIX_VISIBLE >= 200112 181 int posix_madvise(void *, size_t, int); 182 #endif 183 #ifndef _POSIX_SOURCE 184 int madvise (void *, size_t, int); 185 int mcontrol (void *, size_t, int, off_t); 186 int mincore (const void *, size_t, char *); 187 int minherit (void *, size_t, int); 188 #endif 189 __END_DECLS 190 191 #endif 192