1/* $OpenBSD: mman.h,v 1.35 2022/10/07 14:59:39 deraadt Exp $ */ 2/* $NetBSD: mman.h,v 1.11 1995/03/26 20:24:23 jtc Exp $ */ 3 4/*- 5 * Copyright (c) 1982, 1986, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)mman.h 8.1 (Berkeley) 6/2/93 33 */ 34 35#ifndef _KERNEL 36#include <sys/cdefs.h> 37#endif 38 39/* 40 * Protections are chosen from these bits, or-ed together 41 */ 42#define PROT_NONE 0x00 /* no permissions */ 43#define PROT_READ 0x01 /* pages can be read */ 44#define PROT_WRITE 0x02 /* pages can be written */ 45#define PROT_EXEC 0x04 /* pages can be executed */ 46 47/* 48 * Flags contain sharing type and options. 49 * Sharing types; choose one. 50 */ 51#define MAP_SHARED 0x0001 /* share changes */ 52#define MAP_PRIVATE 0x0002 /* changes are private */ 53 54/* 55 * Other flags 56 */ 57#define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 58#define __MAP_NOREPLACE 0x0800 /* fail if address not available */ 59#define MAP_ANON 0x1000 /* allocated from memory, swap space */ 60#define MAP_ANONYMOUS MAP_ANON /* alternate POSIX spelling */ 61#define __MAP_NOFAULT 0x2000 62#define MAP_STACK 0x4000 /* mapping is used for a stack */ 63#define MAP_CONCEAL 0x8000 /* omit from dumps */ 64 65#define MAP_FLAGMASK 0xfff7 66 67#ifndef _KERNEL 68/* 69 * Legacy defines for userland source compatibility. 70 * Can be removed once no longer needed in base and ports. 71 */ 72#define MAP_COPY MAP_PRIVATE /* "copy" region at mmap time */ 73#define MAP_FILE 0 /* map from file (default) */ 74#define MAP_HASSEMAPHORE 0 /* region may contain semaphores */ 75#define MAP_INHERIT 0 /* region is retained after exec */ 76#define MAP_NOEXTEND 0 /* for MAP_FILE, don't change file size */ 77#define MAP_NORESERVE 0 /* Sun: don't reserve needed swap area */ 78#define MAP_RENAME 0 /* Sun: rename private pages to file */ 79#define MAP_TRYFIXED 0 /* attempt hint address, even within heap */ 80#endif 81 82/* 83 * Error return from mmap() 84 */ 85#define MAP_FAILED ((void *)-1) 86 87/* 88 * POSIX memory advisory values. 89 * Note: keep consistent with the original definitions below. 90 */ 91#define POSIX_MADV_NORMAL 0 /* no further special treatment */ 92#define POSIX_MADV_RANDOM 1 /* expect random page references */ 93#define POSIX_MADV_SEQUENTIAL 2 /* expect sequential page references */ 94#define POSIX_MADV_WILLNEED 3 /* will need these pages */ 95#define POSIX_MADV_DONTNEED 4 /* don't need these pages */ 96 97#if __BSD_VISIBLE 98/* 99 * Original advice values, equivalent to POSIX definitions, 100 * and few implementation-specific ones. For in-kernel and historic use. 101 */ 102#define MADV_NORMAL POSIX_MADV_NORMAL 103#define MADV_RANDOM POSIX_MADV_RANDOM 104#define MADV_SEQUENTIAL POSIX_MADV_SEQUENTIAL 105#define MADV_WILLNEED POSIX_MADV_WILLNEED 106#define MADV_DONTNEED POSIX_MADV_DONTNEED 107#define MADV_SPACEAVAIL 5 /* insure that resources are reserved */ 108#define MADV_FREE 6 /* pages are empty, free them */ 109#endif 110 111/* 112 * Flags to minherit 113 */ 114#define MAP_INHERIT_SHARE 0 /* share with child */ 115#define MAP_INHERIT_COPY 1 /* copy into child */ 116#define MAP_INHERIT_NONE 2 /* absent from child */ 117#define MAP_INHERIT_ZERO 3 /* zero in child */ 118 119/* 120 * Flags to msync 121 */ 122#define MS_ASYNC 0x01 /* perform asynchronous writes */ 123#define MS_SYNC 0x02 /* perform synchronous writes */ 124#define MS_INVALIDATE 0x04 /* invalidate cached data */ 125 126/* 127 * Flags to mlockall 128 */ 129#define MCL_CURRENT 0x01 /* lock all pages currently mapped */ 130#define MCL_FUTURE 0x02 /* lock all pages mapped in the future */ 131 132#ifndef _KERNEL 133#include <sys/_types.h> 134 135#ifndef _SIZE_T_DEFINED_ 136#define _SIZE_T_DEFINED_ 137typedef __size_t size_t; 138#endif 139 140#ifndef _OFF_T_DEFINED_ 141#define _OFF_T_DEFINED_ 142typedef __off_t off_t; 143#endif 144 145__BEGIN_DECLS 146void * mmap(void *, size_t, int, int, int, off_t); 147int mprotect(void *, size_t, int); 148int munmap(void *, size_t); 149int msync(void *, size_t, int); 150int mlock(const void *, size_t); 151int munlock(const void *, size_t); 152int mlockall(int); 153int munlockall(void); 154#if __BSD_VISIBLE 155int madvise(void *, size_t, int); 156int minherit(void *, size_t, int); 157int mimmutable(void *, size_t); 158void * mquery(void *, size_t, int, int, int, off_t); 159#endif 160int posix_madvise(void *, size_t, int); 161int shm_open(const char *, int, __mode_t); 162int shm_unlink(const char *); 163int shm_mkstemp(char *); 164__END_DECLS 165 166#endif /* !_KERNEL */ 167