/* $OpenBSD: mman.h,v 1.36 2026/03/26 21:46:24 daniel 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 #ifndef _MODE_T_DEFINED_ #define _MODE_T_DEFINED_ typedef __mode_t mode_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); int mimmutable(void *, size_t); 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 */
