mman.h revision 1822
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 8.1 (Berkeley) 6/2/93 34 * $Id: mman.h,v 1.2 1994/08/02 07:53:14 davidg Exp $ 35 */ 36 37/* 38 * Protections are chosen from these bits, or-ed together 39 */ 40#define PROT_READ 0x01 /* pages can be read */ 41#define PROT_WRITE 0x02 /* pages can be written */ 42#define PROT_EXEC 0x04 /* pages can be executed */ 43 44/* 45 * Flags contain sharing type and options. 46 * Sharing types; choose one. 47 */ 48#define MAP_SHARED 0x0001 /* share changes */ 49#define MAP_PRIVATE 0x0002 /* changes are private */ 50#define MAP_COPY 0x0004 /* "copy" region at mmap time */ 51 52/* 53 * Other flags 54 */ 55#define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 56#define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 57#define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 58#define MAP_INHERIT 0x0080 /* region is retained after exec */ 59#define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ 60#define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 61 62/* 63 * Mapping type; default is map from file. 64 */ 65#define MAP_FILE 0x0000 /* for backward source compatibility */ 66#define MAP_ANON 0x1000 /* allocated from memory, swap space */ 67 68/* 69 * Advice to madvise 70 */ 71#define MADV_NORMAL 0 /* no further special treatment */ 72#define MADV_RANDOM 1 /* expect random page references */ 73#define MADV_SEQUENTIAL 2 /* expect sequential page references */ 74#define MADV_WILLNEED 3 /* will need these pages */ 75#define MADV_DONTNEED 4 /* dont need these pages */ 76 77#ifndef KERNEL 78 79#include <sys/cdefs.h> 80 81__BEGIN_DECLS 82/* Some of these int's should probably be size_t's */ 83caddr_t mmap __P((caddr_t, size_t, int, int, int, off_t)); 84int mprotect __P((caddr_t, size_t, int)); 85int munmap __P((caddr_t, size_t)); 86int msync __P((caddr_t, size_t)); 87int mlock __P((caddr_t, size_t)); 88int munlock __P((caddr_t, size_t)); 89__END_DECLS 90 91#endif /* !KERNEL */ 92