mman.h revision 34925
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 * $Id: mman.h,v 1.22 1998/03/08 17:25:33 dufault Exp $ 35 */ 36 37#ifndef _SYS_MMAN_H_ 38#define _SYS_MMAN_H_ 39 40#include <sys/_posix.h> 41 42/* 43 * Protections are chosen from these bits, or-ed together 44 */ 45#define PROT_NONE 0x00 /* no permissions */ 46#define PROT_READ 0x01 /* pages can be read */ 47#define PROT_WRITE 0x02 /* pages can be written */ 48#define PROT_EXEC 0x04 /* pages can be executed */ 49 50/* 51 * Flags contain sharing type and options. 52 * Sharing types; choose one. 53 */ 54#define MAP_SHARED 0x0001 /* share changes */ 55#define MAP_PRIVATE 0x0002 /* changes are private */ 56#define MAP_COPY MAP_PRIVATE /* Obsolete */ 57 58/* 59 * Other flags 60 */ 61#define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 62#define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 63#define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 64#define MAP_INHERIT 0x0080 /* region is retained after exec */ 65#define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ 66#define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 67 68#ifdef _P1003_1B_VISIBLE 69/* 70 * Process memory locking 71 */ 72#define MCL_CURRENT 0x0001 /* Lock only current memory */ 73#define MCL_FUTURE 0x0002 /* Lock all future memory as well */ 74 75#endif /* _P1003_1B_VISIBLE */ 76 77/* 78 * Error return from mmap() 79 */ 80#define MAP_FAILED ((void *)-1) 81 82/* 83 * msync() flags 84 */ 85#define MS_SYNC 0x0000 /* msync synchronously */ 86#define MS_ASYNC 0x0001 /* return immediately */ 87#define MS_INVALIDATE 0x0002 /* invalidate all cached data */ 88 89 90/* 91 * Mapping type 92 */ 93#define MAP_FILE 0x0000 /* map from file (default) */ 94#define MAP_ANON 0x1000 /* allocated from memory, swap space */ 95 96/* 97 * Advice to madvise 98 */ 99#define MADV_NORMAL 0 /* no further special treatment */ 100#define MADV_RANDOM 1 /* expect random page references */ 101#define MADV_SEQUENTIAL 2 /* expect sequential page references */ 102#define MADV_WILLNEED 3 /* will need these pages */ 103#define MADV_DONTNEED 4 /* dont need these pages */ 104#define MADV_FREE 5 /* dont need these pages, and junk contents */ 105 106/* 107 * Return bits from mincore 108 */ 109#define MINCORE_INCORE 0x1 /* Page is incore */ 110#define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ 111#define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ 112#define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ 113#define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ 114 115#ifndef KERNEL 116 117#include <sys/cdefs.h> 118 119__BEGIN_DECLS 120#ifdef _P1003_1B_VISIBLE 121int mlockall __P((int)); 122int munlockall __P((void)); 123int shm_open __P((const char *, int, mode_t)); 124int shm_unlink __P((const char *)); 125#endif /* _P1003_1B_VISIBLE */ 126int mlock __P((const void *, size_t)); 127#ifndef _MMAP_DECLARED 128#define _MMAP_DECLARED 129void * mmap __P((void *, size_t, int, int, int, off_t)); 130#endif 131int mprotect __P((const void *, size_t, int)); 132int msync __P((void *, size_t, int)); 133int munlock __P((const void *, size_t)); 134int munmap __P((void *, size_t)); 135#ifndef _POSIX_SOURCE 136int madvise __P((void *, size_t, int)); 137int mincore __P((const void *, size_t, char *)); 138int minherit __P((void *, size_t, int)); 139#endif 140__END_DECLS 141 142#endif /* !KERNEL */ 143 144#endif 145