/* $NetBSD: mman.h,v 1.61 2019/04/30 09:23:00 uwe 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 8.2 (Berkeley) 1/9/95 */ #ifndef _SYS_MMAN_H_ #define _SYS_MMAN_H_ #include #include #ifdef _BSD_SIZE_T_ typedef _BSD_SIZE_T_ size_t; #undef _BSD_SIZE_T_ #endif #include #ifndef mode_t typedef __mode_t mode_t; #define mode_t __mode_t #endif #ifndef off_t typedef __off_t off_t; /* file offset */ #define off_t __off_t #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 */ #ifdef _NETBSD_SOURCE /* * PAX mprotect prohibits setting protection bits * missing from the original mmap call unless explicitly * requested with PROT_MPROTECT. */ #define PROT_MPROTECT(x) ((x) << 3) #define PROT_MPROTECT_EXTRACT(x) (((x) >> 3) & 0x7) #endif /* * Flags contain sharing type and options. * Sharing types; choose one. */ #define MAP_SHARED 0x0001 /* share changes */ #define MAP_PRIVATE 0x0002 /* changes are private */ /* old MAP_COPY 0x0004 "copy" region at mmap time */ /* * Other flags */ #define MAP_REMAPDUP 0x0004 /* mremap only: duplicate the mapping */ #define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ #define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ #define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ #define MAP_INHERIT 0x0080 /* region is retained after exec */ #define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ #define MAP_TRYFIXED 0x0400 /* attempt hint address, even within break */ #define MAP_WIRED 0x0800 /* mlock() mapping when it is established */ /* * Mapping type */ #define MAP_FILE 0x0000 /* map from file (default) */ #define MAP_ANONYMOUS 0x1000 /* allocated from memory, swap space */ #define MAP_ANON MAP_ANONYMOUS #define MAP_STACK 0x2000 /* allocated from memory, swap space (stack) */ /* * Alignment (expressed in log2). Must be >= log2(PAGE_SIZE) and * < # bits in a pointer (32 or 64). */ #define MAP_ALIGNED(n) ((int)((unsigned int)(n) << MAP_ALIGNMENT_SHIFT)) #define MAP_ALIGNMENT_SHIFT 24 #define MAP_ALIGNMENT_MASK MAP_ALIGNED(0xff) #define MAP_ALIGNMENT_64KB MAP_ALIGNED(16) /* 2^16 */ #define MAP_ALIGNMENT_16MB MAP_ALIGNED(24) /* 2^24 */ #define MAP_ALIGNMENT_4GB MAP_ALIGNED(32) /* 2^32 */ #define MAP_ALIGNMENT_1TB MAP_ALIGNED(40) /* 2^40 */ #define MAP_ALIGNMENT_256TB MAP_ALIGNED(48) /* 2^48 */ #define MAP_ALIGNMENT_64PB MAP_ALIGNED(56) /* 2^56 */ #ifdef _NETBSD_SOURCE #define MAP_FMT "\177\020" \ "b\0" "SHARED\0" \ "b\1" "PRIVATE\0" \ "b\2" "COPY\0" \ "b\4" "FIXED\0" \ "b\5" "RENAME\0" \ "b\6" "NORESERVE\0" \ "b\7" "INHERIT\0" \ "b\11" "HASSEMAPHORE\0" \ "b\12" "TRYFIXED\0" \ "b\13" "WIRED\0" \ "F\14\1\0" \ ":\0" "FILE\0" \ ":\1" "ANONYMOUS\0" \ "b\15" "STACK\0" \ "F\30\010\0" \ ":\000" "ALIGN=NONE\0" \ ":\012" "ALIGN=1KB\0" \ ":\013" "ALIGN=2KB\0" \ ":\014" "ALIGN=4KB\0" \ ":\015" "ALIGN=8KB\0" \ ":\016" "ALIGN=16KB\0" \ ":\017" "ALIGN=32KB\0" \ ":\020" "ALIGN=64KB\0" \ ":\021" "ALIGN=128KB\0" \ ":\022" "ALIGN=256KB\0" \ ":\023" "ALIGN=512KB\0" \ ":\024" "ALIGN=1MB\0" \ ":\025" "ALIGN=2MB\0" \ ":\026" "ALIGN=4MB\0" \ ":\027" "ALIGN=8MB\0" \ ":\030" "ALIGN=16MB\0" \ ":\034" "ALIGN=256MB\0" \ ":\040" "ALIGN=4GB\0" \ ":\044" "ALIGN=64GB\0" \ ":\050" "ALIGN=1TB\0" \ ":\054" "ALIGN=16TB\0" \ ":\060" "ALIGN=256TB\0" \ ":\064" "ALIGN=4PB\0" \ ":\070" "ALIGN=64PB\0" \ ":\074" "ALIGN=256PB\0" \ "*" "ALIGN=2^%d\0" #endif /* * Error indicator returned by mmap(2) */ #define MAP_FAILED ((void *) -1) /* mmap() failed */ /* * Flags to msync */ #define MS_ASYNC 0x01 /* perform asynchronous writes */ #define MS_INVALIDATE 0x02 /* invalidate cached data */ #define MS_SYNC 0x04 /* perform synchronous writes */ /* * Flags to mlockall */ #define MCL_CURRENT 0x01 /* lock all pages currently mapped */ #define MCL_FUTURE 0x02 /* lock all pages mapped in the future */ /* * 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 defined(_NETBSD_SOURCE) /* * Original advice values, equivalent to POSIX definitions, * and few implementation-specific ones. */ #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 */ /* * 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_DONATE_COPY 3 /* copy and delete -- not implemented in UVM */ #define MAP_INHERIT_ZERO 4 /* zero in child */ #define MAP_INHERIT_DEFAULT MAP_INHERIT_COPY #endif #ifndef _KERNEL #include __BEGIN_DECLS void * mmap(void *, size_t, int, int, int, off_t); int munmap(void *, size_t); int mprotect(void *, size_t, int); #ifndef __LIBC12_SOURCE__ int msync(void *, size_t, int) __RENAME(__msync13); #endif int mlock(const void *, size_t); int munlock(const void *, size_t); int mlockall(int); int munlockall(void); #if defined(_NETBSD_SOURCE) int madvise(void *, size_t, int); int mincore(void *, size_t, char *); int minherit(void *, size_t, int); void * mremap(void *, size_t, void *, size_t, int); #endif int posix_madvise(void *, size_t, int); int shm_open(const char *, int, mode_t); int shm_unlink(const char *); __END_DECLS #endif /* !_KERNEL */ #endif /* !_SYS_MMAN_H_ */