167 lines
5.6 KiB
C
167 lines
5.6 KiB
C
/* $OpenBSD: mman.h,v 1.35 2022/10/07 14:59:39 deraadt Exp $ */
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/* $NetBSD: mman.h,v 1.11 1995/03/26 20:24:23 jtc Exp $ */
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/*-
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)mman.h 8.1 (Berkeley) 6/2/93
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*/
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#ifndef _KERNEL
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#include <sys/cdefs.h>
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#endif
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/*
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* Protections are chosen from these bits, or-ed together
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*/
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#define PROT_NONE 0x00 /* no permissions */
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#define PROT_READ 0x01 /* pages can be read */
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#define PROT_WRITE 0x02 /* pages can be written */
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#define PROT_EXEC 0x04 /* pages can be executed */
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/*
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* Flags contain sharing type and options.
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* Sharing types; choose one.
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*/
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#define MAP_SHARED 0x0001 /* share changes */
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#define MAP_PRIVATE 0x0002 /* changes are private */
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/*
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* Other flags
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*/
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#define MAP_FIXED 0x0010 /* map addr must be exactly as requested */
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#define __MAP_NOREPLACE 0x0800 /* fail if address not available */
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#define MAP_ANON 0x1000 /* allocated from memory, swap space */
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#define MAP_ANONYMOUS MAP_ANON /* alternate POSIX spelling */
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#define __MAP_NOFAULT 0x2000
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#define MAP_STACK 0x4000 /* mapping is used for a stack */
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#define MAP_CONCEAL 0x8000 /* omit from dumps */
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#define MAP_FLAGMASK 0xfff7
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#ifndef _KERNEL
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/*
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* Legacy defines for userland source compatibility.
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* Can be removed once no longer needed in base and ports.
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*/
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#define MAP_COPY MAP_PRIVATE /* "copy" region at mmap time */
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#define MAP_FILE 0 /* map from file (default) */
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#define MAP_HASSEMAPHORE 0 /* region may contain semaphores */
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#define MAP_INHERIT 0 /* region is retained after exec */
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#define MAP_NOEXTEND 0 /* for MAP_FILE, don't change file size */
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#define MAP_NORESERVE 0 /* Sun: don't reserve needed swap area */
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#define MAP_RENAME 0 /* Sun: rename private pages to file */
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#define MAP_TRYFIXED 0 /* attempt hint address, even within heap */
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#endif
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/*
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* Error return from mmap()
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*/
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#define MAP_FAILED ((void *)-1)
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/*
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* POSIX memory advisory values.
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* Note: keep consistent with the original definitions below.
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*/
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#define POSIX_MADV_NORMAL 0 /* no further special treatment */
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#define POSIX_MADV_RANDOM 1 /* expect random page references */
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#define POSIX_MADV_SEQUENTIAL 2 /* expect sequential page references */
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#define POSIX_MADV_WILLNEED 3 /* will need these pages */
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#define POSIX_MADV_DONTNEED 4 /* don't need these pages */
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#if __BSD_VISIBLE
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/*
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* Original advice values, equivalent to POSIX definitions,
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* and few implementation-specific ones. For in-kernel and historic use.
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*/
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#define MADV_NORMAL POSIX_MADV_NORMAL
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#define MADV_RANDOM POSIX_MADV_RANDOM
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#define MADV_SEQUENTIAL POSIX_MADV_SEQUENTIAL
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#define MADV_WILLNEED POSIX_MADV_WILLNEED
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#define MADV_DONTNEED POSIX_MADV_DONTNEED
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#define MADV_SPACEAVAIL 5 /* insure that resources are reserved */
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#define MADV_FREE 6 /* pages are empty, free them */
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#endif
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/*
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* Flags to minherit
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*/
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#define MAP_INHERIT_SHARE 0 /* share with child */
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#define MAP_INHERIT_COPY 1 /* copy into child */
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#define MAP_INHERIT_NONE 2 /* absent from child */
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#define MAP_INHERIT_ZERO 3 /* zero in child */
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/*
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* Flags to msync
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*/
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#define MS_ASYNC 0x01 /* perform asynchronous writes */
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#define MS_SYNC 0x02 /* perform synchronous writes */
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#define MS_INVALIDATE 0x04 /* invalidate cached data */
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/*
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* Flags to mlockall
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*/
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#define MCL_CURRENT 0x01 /* lock all pages currently mapped */
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#define MCL_FUTURE 0x02 /* lock all pages mapped in the future */
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#ifndef _KERNEL
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#include <sys/_types.h>
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#ifndef _SIZE_T_DEFINED_
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#define _SIZE_T_DEFINED_
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typedef __size_t size_t;
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#endif
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#ifndef _OFF_T_DEFINED_
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#define _OFF_T_DEFINED_
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typedef __off_t off_t;
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#endif
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__BEGIN_DECLS
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void * mmap(void *, size_t, int, int, int, off_t);
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int mprotect(void *, size_t, int);
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int munmap(void *, size_t);
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int msync(void *, size_t, int);
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int mlock(const void *, size_t);
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int munlock(const void *, size_t);
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int mlockall(int);
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int munlockall(void);
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#if __BSD_VISIBLE
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int madvise(void *, size_t, int);
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int minherit(void *, size_t, int);
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int mimmutable(void *, size_t);
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void * mquery(void *, size_t, int, int, int, off_t);
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#endif
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int posix_madvise(void *, size_t, int);
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int shm_open(const char *, int, __mode_t);
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int shm_unlink(const char *);
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int shm_mkstemp(char *);
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__END_DECLS
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#endif /* !_KERNEL */
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