From e2abcdca396661cbe0ae2ddb13d5c2b85682c13a Mon Sep 17 00:00:00 2001 From: Cem Keylan Date: Fri, 16 Oct 2020 17:41:25 +0300 Subject: initial commit --- sys/sys/mman.h | 165 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 165 insertions(+) create mode 100644 sys/sys/mman.h (limited to 'sys/sys/mman.h') diff --git a/sys/sys/mman.h b/sys/sys/mman.h new file mode 100644 index 0000000..47972b5 --- /dev/null +++ b/sys/sys/mman.h @@ -0,0 +1,165 @@ +/* $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 +#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 + +#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 */ -- cgit v1.2.3