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/* $OpenBSD: mman.h,v 1.34 2019/03/01 01:46:18 cheloha Exp $ */
/* $NetBSD: mman.h,v 1.11 1995/03/26 20:24:23 jtc 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. 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 8.1 (Berkeley) 6/2/93
*/
#ifndef _KERNEL
#include <sys/cdefs.h>
#endif
/*
* 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 */
/*
* Other flags
*/
#define MAP_FIXED 0x0010 /* map addr must be exactly as requested */
#define __MAP_NOREPLACE 0x0800 /* fail if address not available */
#define MAP_ANON 0x1000 /* allocated from memory, swap space */
#define MAP_ANONYMOUS MAP_ANON /* alternate POSIX spelling */
#define __MAP_NOFAULT 0x2000
#define MAP_STACK 0x4000 /* mapping is used for a stack */
#define MAP_CONCEAL 0x8000 /* omit from dumps */
#define MAP_FLAGMASK 0xfff7
#ifndef _KERNEL
/*
* Legacy defines for userland source compatibility.
* Can be removed once no longer needed in base and ports.
*/
#define MAP_COPY MAP_PRIVATE /* "copy" region at mmap time */
#define MAP_FILE 0 /* map from file (default) */
#define MAP_HASSEMAPHORE 0 /* region may contain semaphores */
#define MAP_INHERIT 0 /* region is retained after exec */
#define MAP_NOEXTEND 0 /* for MAP_FILE, don't change file size */
#define MAP_NORESERVE 0 /* Sun: don't reserve needed swap area */
#define MAP_RENAME 0 /* Sun: rename private pages to file */
#define MAP_TRYFIXED 0 /* attempt hint address, even within heap */
#endif
/*
* Error return from mmap()
*/
#define MAP_FAILED ((void *)-1)
/*
* POSIX memory advisory values.
* Note: keep consistent with the original definitions below.
*/
#define POSIX_MADV_NORMAL 0 /* no further special treatment */
#define POSIX_MADV_RANDOM 1 /* expect random page references */
#define POSIX_MADV_SEQUENTIAL 2 /* expect sequential page references */
#define POSIX_MADV_WILLNEED 3 /* will need these pages */
#define POSIX_MADV_DONTNEED 4 /* don't need these pages */
#if __BSD_VISIBLE
/*
* Original advice values, equivalent to POSIX definitions,
* and few implementation-specific ones. For in-kernel and historic use.
*/
#define MADV_NORMAL POSIX_MADV_NORMAL
#define MADV_RANDOM POSIX_MADV_RANDOM
#define MADV_SEQUENTIAL POSIX_MADV_SEQUENTIAL
#define MADV_WILLNEED POSIX_MADV_WILLNEED
#define MADV_DONTNEED POSIX_MADV_DONTNEED
#define MADV_SPACEAVAIL 5 /* insure that resources are reserved */
#define MADV_FREE 6 /* pages are empty, free them */
#endif
/*
* 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_ZERO 3 /* zero in child */
/*
* Flags to msync
*/
#define MS_ASYNC 0x01 /* perform asynchronous writes */
#define MS_SYNC 0x02 /* perform synchronous writes */
#define MS_INVALIDATE 0x04 /* invalidate cached data */
/*
* Flags to mlockall
*/
#define MCL_CURRENT 0x01 /* lock all pages currently mapped */
#define MCL_FUTURE 0x02 /* lock all pages mapped in the future */
#ifndef _KERNEL
#include <sys/_types.h>
#ifndef _SIZE_T_DEFINED_
#define _SIZE_T_DEFINED_
typedef __size_t size_t;
#endif
#ifndef _OFF_T_DEFINED_
#define _OFF_T_DEFINED_
typedef __off_t off_t;
#endif
__BEGIN_DECLS
void * mmap(void *, size_t, int, int, int, off_t);
int mprotect(void *, size_t, int);
int munmap(void *, size_t);
int msync(void *, size_t, int);
int mlock(const void *, size_t);
int munlock(const void *, size_t);
int mlockall(int);
int munlockall(void);
#if __BSD_VISIBLE
int madvise(void *, size_t, int);
int minherit(void *, size_t, int);
void * mquery(void *, size_t, int, int, int, off_t);
#endif
int posix_madvise(void *, size_t, int);
int shm_open(const char *, int, __mode_t);
int shm_unlink(const char *);
int shm_mkstemp(char *);
__END_DECLS
#endif /* !_KERNEL */
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