/*      $NetBSD: mman.h,v 1.24.2.1 2000/11/20 18:11:32 bouyer Exp $     */ 

/*- 
 * Copyright (c) 1982, 1986, 1993 
 *      The Regents of the University of California.  All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met: 
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer. 
 * 2. Redistributions in binary form must reproduce the above copyright 
 *    notice, this list of conditions and the following disclaimer in the 
 *    documentation and/or other materials provided with the distribution. 
 * 3. All advertising materials mentioning features or use of this software 
 *    must display the following acknowledgement: 
 *      This product includes software developed by the University of 
 *      California, Berkeley and its contributors. 
 * 4. Neither the name of the University nor the names of its contributors 
 *    may be used to endorse or promote products derived from this software 
 *    without specific prior written permission. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE. 
 * 
 *      @(#)mman.h      8.2 (Berkeley) 1/9/95 
 */ 

#ifndef _SYS_MMAN_H_ 
#define _SYS_MMAN_H_ 

/* 
 * Protections are chosen from these bits, or-ed together 
 */ 
#define PROT_NONE       0x00    /* no permissions */ 
#define PROT_READ       0x01    /* pages can be read */ 
#define PROT_WRITE      0x02    /* pages can be written */ 
#define PROT_EXEC       0x04    /* pages can be executed */ 

/* 
 * Flags contain sharing type and options. 
 * Sharing types; choose one. 
 */ 
#define MAP_SHARED      0x0001  /* share changes */ 
#define MAP_PRIVATE     0x0002  /* changes are private */ 

/* 
 * Deprecated flag; these are treated as MAP_PRIVATE internally by 
 * the kernel. 
 */ 
#define MAP_COPY        0x0004  /* "copy" region at mmap time */ 

/* 
 * Other flags 
 */ 
#define MAP_FIXED        0x0010 /* map addr must be exactly as requested */ 
#define MAP_RENAME       0x0020 /* Sun: rename private pages to file */ 
#define MAP_NORESERVE    0x0040 /* Sun: don't reserve needed swap area */ 
#define MAP_INHERIT      0x0080 /* region is retained after exec */ 
#define MAP_NOEXTEND     0x0100 /* for MAP_FILE, don't change file size */ 
#define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 

/* 
 * Mapping type 
 */ 
#define MAP_FILE        0x0000  /* map from file (default) */ 
#define MAP_ANON        0x1000  /* allocated from memory, swap space */ 

/* 
 * Error indicator returned by mmap(2) 
 */ 
#define MAP_FAILED      ((void *) -1)   /* mmap() failed */ 

/* 
 * Flags to msync 
 */ 
#define MS_ASYNC        0x01    /* perform asynchronous writes */ 
#define MS_INVALIDATE   0x02    /* invalidate cached data */ 
#define MS_SYNC         0x04    /* perform synchronous writes */ 

/* 
 * Flags to mlockall 
 */ 
#define MCL_CURRENT     0x01    /* lock all pages currently mapped */ 
#define MCL_FUTURE      0x02    /* lock all pages mapped in the future */ 

#if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 
/* 
 * 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 */ 
#define MADV_SPACEAVAIL 5       /* insure that resources are reserved */ 
#define MADV_FREE       6       /* pages are empty, free them */ 
/* 
 * Flags to minherit 
 */ 
#define MAP_INHERIT_SHARE       0       /* share with child */ 
#define MAP_INHERIT_COPY        1       /* copy into child */ 
#define MAP_INHERIT_NONE        2       /* absent from child */ 
#define MAP_INHERIT_DONATE_COPY 3       /* copy and delete -- not 
                                           implemented in UVM */ 
#define MAP_INHERIT_DEFAULT     MAP_INHERIT_COPY 
#endif 

#endif /* !_SYS_MMAN_H_ */