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 1.3 2003/08/20 07:31:21 rob Exp $ 36 */ 37 38 #ifndef _SYS_MMAN_H_ 39 #define _SYS_MMAN_H_ 40 41 #include <sys/_posix.h> 42 43 /* 44 * Inheritance for minherit() 45 */ 46 #define INHERIT_SHARE 0 47 #define INHERIT_COPY 1 48 #define INHERIT_NONE 2 49 50 /* 51 * Protections are chosen from these bits, or-ed together 52 */ 53 #define PROT_NONE 0x00 /* no permissions */ 54 #define PROT_READ 0x01 /* pages can be read */ 55 #define PROT_WRITE 0x02 /* pages can be written */ 56 #define PROT_EXEC 0x04 /* pages can be executed */ 57 58 /* 59 * Flags contain sharing type and options. 60 * Sharing types; choose one. 61 */ 62 #define MAP_SHARED 0x0001 /* share changes */ 63 #define MAP_PRIVATE 0x0002 /* changes are private */ 64 #define MAP_COPY MAP_PRIVATE /* Obsolete */ 65 66 /* 67 * Other flags 68 */ 69 #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 70 #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 71 #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 72 #define MAP_INHERIT 0x0080 /* region is retained after exec */ 73 #define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ 74 #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 75 #define MAP_STACK 0x0400 /* region grows down, like a stack */ 76 #define MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */ 77 78 /* 79 * Extended flags 80 */ 81 #define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */ 82 83 #ifdef _P1003_1B_VISIBLE 84 /* 85 * Process memory locking 86 */ 87 #define MCL_CURRENT 0x0001 /* Lock only current memory */ 88 #define MCL_FUTURE 0x0002 /* Lock all future memory as well */ 89 90 #endif /* _P1003_1B_VISIBLE */ 91 92 /* 93 * Error return from mmap() 94 */ 95 #define MAP_FAILED ((void *)-1) 96 97 /* 98 * msync() flags 99 */ 100 #define MS_SYNC 0x0000 /* msync synchronously */ 101 #define MS_ASYNC 0x0001 /* return immediately */ 102 #define MS_INVALIDATE 0x0002 /* invalidate all cached data */ 103 104 105 /* 106 * Mapping type 107 */ 108 #define MAP_FILE 0x0000 /* map from file (default) */ 109 #define MAP_ANON 0x1000 /* allocated from memory, swap space */ 110 111 /* 112 * Advice to madvise 113 */ 114 #define MADV_NORMAL 0 /* no further special treatment */ 115 #define MADV_RANDOM 1 /* expect random page references */ 116 #define MADV_SEQUENTIAL 2 /* expect sequential page references */ 117 #define MADV_WILLNEED 3 /* will need these pages */ 118 #define MADV_DONTNEED 4 /* dont need these pages */ 119 #define MADV_FREE 5 /* dont need these pages, and junk contents */ 120 #define MADV_NOSYNC 6 /* try to avoid flushes to physical media */ 121 #define MADV_AUTOSYNC 7 /* revert to default flushing strategy */ 122 #define MADV_NOCORE 8 /* do not include these pages in a core file */ 123 #define MADV_CORE 9 /* revert to including pages in a core file */ 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 */ 133 134 #ifndef _KERNEL 135 136 #include <sys/cdefs.h> 137 138 __BEGIN_DECLS 139 #ifdef _P1003_1B_VISIBLE 140 int mlockall (int); 141 int munlockall (void); 142 int shm_open (const char *, int, mode_t); 143 int shm_unlink (const char *); 144 #endif /* _P1003_1B_VISIBLE */ 145 int mlock (const void *, size_t); 146 #ifndef _MMAP_DECLARED 147 #define _MMAP_DECLARED 148 void * mmap (void *, size_t, int, int, int, off_t); 149 #endif 150 int mprotect (const void *, size_t, int); 151 int msync (void *, size_t, int); 152 int munlock (const void *, size_t); 153 int munmap (void *, size_t); 154 #ifndef _POSIX_SOURCE 155 int madvise (void *, size_t, int); 156 int mincore (const void *, size_t, char *); 157 int minherit (void *, size_t, int); 158 #endif 159 __END_DECLS 160 161 #endif /* !_KERNEL */ 162 163 #endif 164