mman.h revision 32131
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 1.19 1997/12/02 21:30:03 dyson Exp $ 35 */ 36 37#ifndef _SYS_MMAN_H_ 38#define _SYS_MMAN_H_ 39 40/* 41 * Protections are chosen from these bits, or-ed together 42 */ 43#define PROT_NONE 0x00 /* no permissions */ 44#define PROT_READ 0x01 /* pages can be read */ 45#define PROT_WRITE 0x02 /* pages can be written */ 46#define PROT_EXEC 0x04 /* pages can be executed */ 47 48/* 49 * Flags contain sharing type and options. 50 * Sharing types; choose one. 51 */ 52#define MAP_SHARED 0x0001 /* share changes */ 53#define MAP_PRIVATE 0x0002 /* changes are private */ 54#define MAP_COPY MAP_PRIVATE /* Obsolete */ 55 56/* 57 * Other flags 58 */ 59#define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 60#define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 61#define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 62#define MAP_INHERIT 0x0080 /* region is retained after exec */ 63#define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ 64#define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 65 66/* 67 * Error return from mmap() 68 */ 69#define MAP_FAILED ((void *)-1) 70 71/* 72 * msync() flags 73 */ 74#define MS_SYNC 0x0000 /* msync synchronously */ 75#define MS_ASYNC 0x0001 /* return immediately */ 76#define MS_INVALIDATE 0x0002 /* invalidate all cached data */ 77 78/* 79 * Mapping type 80 */ 81#define MAP_FILE 0x0000 /* map from file (default) */ 82#define MAP_ANON 0x1000 /* allocated from memory, swap space */ 83 84/* 85 * Advice to madvise 86 */ 87#define MADV_NORMAL 0 /* no further special treatment */ 88#define MADV_RANDOM 1 /* expect random page references */ 89#define MADV_SEQUENTIAL 2 /* expect sequential page references */ 90#define MADV_WILLNEED 3 /* will need these pages */ 91#define MADV_DONTNEED 4 /* dont need these pages */ 92#define MADV_FREE 5 /* dont need these pages, and junk contents */ 93 94/* 95 * Return bits from mincore 96 */ 97#define MINCORE_INCORE 0x1 /* Page is incore */ 98#define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ 99#define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ 100#define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ 101#define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ 102 103#ifndef KERNEL 104 105#include <sys/cdefs.h> 106 107__BEGIN_DECLS 108int madvise __P((void *, size_t, int)); 109int mincore __P((const void *, size_t, char *)); 110int minherit __P((void *, size_t, int)); 111int mlock __P((const void *, size_t)); 112#ifndef _MMAP_DECLARED 113#define _MMAP_DECLARED 114void * mmap __P((void *, size_t, int, int, int, off_t)); 115#endif 116int mprotect __P((const void *, size_t, int)); 117int msync __P((void *, size_t, int)); 118int munlock __P((const void *, size_t)); 119int munmap __P((void *, size_t)); 120__END_DECLS 121 122#endif /* !KERNEL */ 123 124#endif 125