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 1.4 2006/05/21 03:43:47 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 /* 81 * Extended flags 82 */ 83 #define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */ 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 */ 112 113 /* 114 * Advice to madvise 115 */ 116 #define MADV_NORMAL 0 /* no further special treatment */ 117 #define MADV_RANDOM 1 /* expect random page references */ 118 #define MADV_SEQUENTIAL 2 /* expect sequential page references */ 119 #define MADV_WILLNEED 3 /* will need these pages */ 120 #define MADV_DONTNEED 4 /* dont need these pages */ 121 #define MADV_FREE 5 /* dont need these pages, and junk contents */ 122 #define MADV_NOSYNC 6 /* try to avoid flushes to physical media */ 123 #define MADV_AUTOSYNC 7 /* revert to default flushing strategy */ 124 #define MADV_NOCORE 8 /* do not include these pages in a core file */ 125 #define MADV_CORE 9 /* revert to including pages in a core file */ 126 127 /* 128 * Return bits from mincore 129 */ 130 #define MINCORE_INCORE 0x1 /* Page is incore */ 131 #define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ 132 #define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ 133 #define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ 134 #define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ 135 136 #ifndef _KERNEL 137 138 #ifndef _SYS_TYPES_H_ 139 #include <sys/types.h> 140 #endif 141 #ifndef _SYS_CDEFS_H_ 142 #include <sys/cdefs.h> 143 #endif 144 145 __BEGIN_DECLS 146 #ifdef _P1003_1B_VISIBLE 147 int mlockall (int); 148 int munlockall (void); 149 int shm_open (const char *, int, mode_t); 150 int shm_unlink (const char *); 151 #endif /* _P1003_1B_VISIBLE */ 152 int mlock (const void *, size_t); 153 #ifndef _MMAP_DECLARED 154 #define _MMAP_DECLARED 155 void * mmap (void *, size_t, int, int, int, off_t); 156 #endif 157 int mprotect (const void *, size_t, int); 158 int msync (void *, size_t, int); 159 int munlock (const void *, size_t); 160 int munmap (void *, size_t); 161 #ifndef _POSIX_SOURCE 162 int madvise (void *, size_t, int); 163 int mincore (const void *, size_t, char *); 164 int minherit (void *, size_t, int); 165 #endif 166 __END_DECLS 167 168 #endif /* !_KERNEL */ 169 170 #endif 171