mman.h revision 54467
11541Srgrimes/*- 21541Srgrimes * Copyright (c) 1982, 1986, 1993 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * 51541Srgrimes * Redistribution and use in source and binary forms, with or without 61541Srgrimes * modification, are permitted provided that the following conditions 71541Srgrimes * are met: 81541Srgrimes * 1. Redistributions of source code must retain the above copyright 91541Srgrimes * notice, this list of conditions and the following disclaimer. 101541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111541Srgrimes * notice, this list of conditions and the following disclaimer in the 121541Srgrimes * documentation and/or other materials provided with the distribution. 131541Srgrimes * 3. All advertising materials mentioning features or use of this software 141541Srgrimes * must display the following acknowledgement: 151541Srgrimes * This product includes software developed by the University of 161541Srgrimes * California, Berkeley and its contributors. 171541Srgrimes * 4. Neither the name of the University nor the names of its contributors 181541Srgrimes * may be used to endorse or promote products derived from this software 191541Srgrimes * without specific prior written permission. 201541Srgrimes * 211541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311541Srgrimes * SUCH DAMAGE. 321541Srgrimes * 3314482Shsu * @(#)mman.h 8.2 (Berkeley) 1/9/95 3450477Speter * $FreeBSD: head/sys/sys/mman.h 54467 1999-12-12 03:19:33Z dillon $ 351541Srgrimes */ 361541Srgrimes 372165Spaul#ifndef _SYS_MMAN_H_ 382165Spaul#define _SYS_MMAN_H_ 392165Spaul 4034319Sdufault#include <sys/_posix.h> 4134319Sdufault 421541Srgrimes/* 431541Srgrimes * Protections are chosen from these bits, or-ed together 441541Srgrimes */ 4514482Shsu#define PROT_NONE 0x00 /* no permissions */ 461541Srgrimes#define PROT_READ 0x01 /* pages can be read */ 471541Srgrimes#define PROT_WRITE 0x02 /* pages can be written */ 481541Srgrimes#define PROT_EXEC 0x04 /* pages can be executed */ 491541Srgrimes 501541Srgrimes/* 511541Srgrimes * Flags contain sharing type and options. 521541Srgrimes * Sharing types; choose one. 531541Srgrimes */ 549507Sdg#define MAP_SHARED 0x0001 /* share changes */ 559507Sdg#define MAP_PRIVATE 0x0002 /* changes are private */ 569507Sdg#define MAP_COPY MAP_PRIVATE /* Obsolete */ 571541Srgrimes 581541Srgrimes/* 591541Srgrimes * Other flags 601541Srgrimes */ 611541Srgrimes#define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ 621541Srgrimes#define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ 631541Srgrimes#define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ 641541Srgrimes#define MAP_INHERIT 0x0080 /* region is retained after exec */ 651541Srgrimes#define MAP_NOEXTEND 0x0100 /* for MAP_FILE, don't change file size */ 661541Srgrimes#define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ 6742360Sjulian#define MAP_STACK 0x0400 /* region grows down, like a stack */ 6854467Sdillon#define MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */ 691541Srgrimes 7034925Sdufault#ifdef _P1003_1B_VISIBLE 711541Srgrimes/* 7234030Sdufault * Process memory locking 7334030Sdufault */ 7434030Sdufault#define MCL_CURRENT 0x0001 /* Lock only current memory */ 7534030Sdufault#define MCL_FUTURE 0x0002 /* Lock all future memory as well */ 7634030Sdufault 7734925Sdufault#endif /* _P1003_1B_VISIBLE */ 7834030Sdufault 7934030Sdufault/* 8020346Salex * Error return from mmap() 8120346Salex */ 8232131Salex#define MAP_FAILED ((void *)-1) 8320346Salex 8420346Salex/* 857358Sdg * msync() flags 867358Sdg */ 8731497Sdyson#define MS_SYNC 0x0000 /* msync synchronously */ 887358Sdg#define MS_ASYNC 0x0001 /* return immediately */ 897358Sdg#define MS_INVALIDATE 0x0002 /* invalidate all cached data */ 907358Sdg 9134030Sdufault 927358Sdg/* 9314482Shsu * Mapping type 941541Srgrimes */ 9514482Shsu#define MAP_FILE 0x0000 /* map from file (default) */ 961541Srgrimes#define MAP_ANON 0x1000 /* allocated from memory, swap space */ 971541Srgrimes 981541Srgrimes/* 991541Srgrimes * Advice to madvise 1001541Srgrimes */ 1011541Srgrimes#define MADV_NORMAL 0 /* no further special treatment */ 1021541Srgrimes#define MADV_RANDOM 1 /* expect random page references */ 1031541Srgrimes#define MADV_SEQUENTIAL 2 /* expect sequential page references */ 1041541Srgrimes#define MADV_WILLNEED 3 /* will need these pages */ 1051541Srgrimes#define MADV_DONTNEED 4 /* dont need these pages */ 10615873Sdyson#define MADV_FREE 5 /* dont need these pages, and junk contents */ 10754467Sdillon#define MADV_NOSYNC 6 /* try to avoid flushes to physical media */ 10854467Sdillon#define MADV_AUTOSYNC 7 /* revert to default flushing strategy */ 1091541Srgrimes 11015819Sdyson/* 11115819Sdyson * Return bits from mincore 11215819Sdyson */ 11315819Sdyson#define MINCORE_INCORE 0x1 /* Page is incore */ 11415819Sdyson#define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ 11515819Sdyson#define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ 11615819Sdyson#define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ 11715819Sdyson#define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ 11815819Sdyson 1191541Srgrimes#ifndef KERNEL 1201541Srgrimes 1211541Srgrimes#include <sys/cdefs.h> 1221541Srgrimes 1231541Srgrimes__BEGIN_DECLS 12434925Sdufault#ifdef _P1003_1B_VISIBLE 12534030Sdufaultint mlockall __P((int)); 12634030Sdufaultint munlockall __P((void)); 12734030Sdufaultint shm_open __P((const char *, int, mode_t)); 12834030Sdufaultint shm_unlink __P((const char *)); 12934925Sdufault#endif /* _P1003_1B_VISIBLE */ 13032131Salexint mlock __P((const void *, size_t)); 13124896Sbde#ifndef _MMAP_DECLARED 13224896Sbde#define _MMAP_DECLARED 13332131Salexvoid * mmap __P((void *, size_t, int, int, int, off_t)); 13424896Sbde#endif 13532131Salexint mprotect __P((const void *, size_t, int)); 13632131Salexint msync __P((void *, size_t, int)); 13732131Salexint munlock __P((const void *, size_t)); 13832131Salexint munmap __P((void *, size_t)); 13934030Sdufault#ifndef _POSIX_SOURCE 14034030Sdufaultint madvise __P((void *, size_t, int)); 14134030Sdufaultint mincore __P((const void *, size_t, char *)); 14234030Sdufaultint minherit __P((void *, size_t, int)); 14334030Sdufault#endif 1441541Srgrimes__END_DECLS 1451541Srgrimes 1461541Srgrimes#endif /* !KERNEL */ 1472165Spaul 1482165Spaul#endif 149