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 * $DragonFly: src/sys/sys/mman.h,v 1.9 2008/07/23 17:22:33 dillon Exp $ 36 */ 37 38 #ifndef _SYS_MMAN_H_ 39 #define _SYS_MMAN_H_ 40 41 #ifndef _SYS__POSIX_H_ 42 #include <sys/_posix.h> 43 #endif 44 45 /* 46 * Inheritance for minherit() 47 */ 48 #define INHERIT_SHARE 0 49 #define INHERIT_COPY 1 50 #define INHERIT_NONE 2 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 #define MAP_COPY MAP_PRIVATE /* Obsolete */ 67 68 /* 69 * Other flags 70 */ 71 #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 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_INHERIT 0x0080 /* region is retained after exec */ 75 #define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ 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 #ifdef _P1003_1B_VISIBLE 81 /* 82 * Process memory locking 83 */ 84 #define MCL_CURRENT 0x0001 /* Lock only current memory */ 85 #define MCL_FUTURE 0x0002 /* Lock all future memory as well */ 86 87 #endif /* _P1003_1B_VISIBLE */ 88 89 /* 90 * Error return from mmap() 91 */ 92 #define MAP_FAILED ((void *)-1) 93 94 /* 95 * msync() flags 96 */ 97 #define MS_SYNC 0x0000 /* msync synchronously */ 98 #define MS_ASYNC 0x0001 /* return immediately */ 99 #define MS_INVALIDATE 0x0002 /* invalidate all cached data */ 100 101 102 /* 103 * Mapping type 104 */ 105 #define MAP_FILE 0x0000 /* map from file (default) */ 106 #define MAP_ANON 0x1000 /* allocated from memory, swap space */ 107 #define MAP_VPAGETABLE 0x2000 /* manage with virtualized page table */ 108 109 /* 110 * Extended flags 111 */ 112 #define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */ 113 114 /* 115 * Advice to madvise 116 */ 117 #define MADV_NORMAL 0 /* no further special treatment */ 118 #define MADV_RANDOM 1 /* expect random page references */ 119 #define MADV_SEQUENTIAL 2 /* expect sequential page references */ 120 #define MADV_WILLNEED 3 /* will need these pages */ 121 #define MADV_DONTNEED 4 /* dont need these pages */ 122 #define MADV_FREE 5 /* dont need these pages, and junk contents */ 123 #define MADV_NOSYNC 6 /* try to avoid flushes to physical media */ 124 #define MADV_AUTOSYNC 7 /* revert to default flushing strategy */ 125 #define MADV_NOCORE 8 /* do not include these pages in a core file */ 126 #define MADV_CORE 9 /* revert to including pages in a core file */ 127 #define MADV_INVAL 10 /* virt page tables have changed, inval pmap */ 128 #define MADV_SETMAP 11 /* set page table directory page for map */ 129 130 /* 131 * mcontrol() must be used for these functions instead of madvise() 132 */ 133 #define MADV_CONTROL_START MADV_INVAL 134 #define MADV_CONTROL_END MADV_SETMAP 135 136 /* 137 * Return bits from mincore 138 */ 139 #define MINCORE_INCORE 0x1 /* Page is incore */ 140 #define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ 141 #define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ 142 #define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ 143 #define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ 144 #define MINCORE_SUPER 0x20 /* Page is a "super" page */ 145 146 #ifndef _SYS_TYPES_H_ 147 #include <sys/types.h> 148 #endif 149 #ifndef _SYS_CDEFS_H_ 150 #include <sys/cdefs.h> 151 #endif 152 153 __BEGIN_DECLS 154 #ifdef _P1003_1B_VISIBLE 155 int mlockall (int); 156 int munlockall (void); 157 int shm_open (const char *, int, mode_t); 158 int shm_unlink (const char *); 159 #endif /* _P1003_1B_VISIBLE */ 160 int mlock (const void *, size_t); 161 #ifndef _MMAP_DECLARED 162 #define _MMAP_DECLARED 163 void * mmap (void *, size_t, int, int, int, off_t); 164 #endif 165 int mprotect (const void *, size_t, int); 166 int msync (void *, size_t, int); 167 int munlock (const void *, size_t); 168 int munmap (void *, size_t); 169 #ifndef _POSIX_SOURCE 170 int madvise (void *, size_t, int); 171 int mcontrol (void *, size_t, int, off_t); 172 int mincore (const void *, size_t, char *); 173 int minherit (void *, size_t, int); 174 #endif 175 __END_DECLS 176 177 #endif 178