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mman.h
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1997-04-27
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45 lines
/*
* Mach Operating System
* Copyright (c) 1989 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*/
/*
* HISTORY
* $Log: mman.h,v $
* Revision 2.3 89/03/09 22:05:44 rpd
* More cleanup.
*
* Revision 2.2 89/02/25 17:54:47 gm0w
* Changes for cleanup.
*
*/
/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)mman.h 7.1 (Berkeley) 6/4/86
*/
#ifndef _SYS_MMAN_H_
#define _SYS_MMAN_H_
/* protections are chosen from these bits, or-ed together */
#define PROT_READ 0x1 /* pages can be read */
#define PROT_WRITE 0x2 /* pages can be written */
#define PROT_EXEC 0x4 /* pages can be executed */
/* sharing types: choose either SHARED or PRIVATE */
#define MAP_SHARED 1 /* share changes */
#define MAP_PRIVATE 2 /* changes are private */
/* advice to madvise */
#define MADV_NORMAL 0 /* no further special treatment */
#define MADV_RANDOM 1 /* expect random page references */
#define MADV_SEQUENTIAL 2 /* expect sequential page references */
#define MADV_WILLNEED 3 /* will need these pages */
#define MADV_DONTNEED 4 /* dont need these pages */
#endif _SYS_MMAN_H_