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Diffstat (limited to 'include/sys/mman.h')
| -rw-r--r-- | include/sys/mman.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/include/sys/mman.h b/include/sys/mman.h new file mode 100644 index 0000000000..ddf34ccabc --- /dev/null +++ b/include/sys/mman.h @@ -0,0 +1,189 @@ +/* $NetBSD: mman.h,v 1.36 2005/09/13 01:42:51 christos 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_ + +#ifdef __rtems__ + +#include <inttypes.h> +#include <stddef.h> +#include <sys/types.h> + +#else /* __rtems__ */ +#include <sys/featuretest.h> + +#include <machine/ansi.h> + +#ifdef _BSD_SIZE_T_ +typedef _BSD_SIZE_T_ size_t; +#undef _BSD_SIZE_T_ +#endif + +#include <sys/ansi.h> + +#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 +#endif /* __rtems__ */ + + +/* + * 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 */ + +#ifdef _KERNEL +/* + * Deprecated flag; these are treated as MAP_PRIVATE internally by + * the kernel. + */ +#define MAP_COPY 0x0004 /* "copy" region at mmap time */ +#endif + +/* + * Other flags + */ +#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_ANON 0x1000 /* allocated from memory, swap space */ + +/* + * Alignment (expressed in log2). Must be >= log2(PAGE_SIZE) and + * < # bits in a pointer (26 (acorn26), 32 or 64). + */ +#define MAP_ALIGNED(n) ((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 */ + +/* + * 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 */ + +#if defined(_NETBSD_SOURCE) +/* + * Advice to madvise + */ +#define MADV_NORMAL 0 /* no further special treatment */ +#define MADV_RANDOM 1 /* expect random page references */ +#define MADV_SEQUENTIAL 2 /* expect sequential page references */ +#define MADV_WILLNEED 3 /* will need these pages */ +#define MADV_DONTNEED 4 /* dont need these pages */ +#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_DEFAULT MAP_INHERIT_COPY +#endif + +#ifndef _KERNEL + +#include <sys/cdefs.h> + +__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__ +#if defined(__rtems__) +int msync(void *, size_t, int); +#else +int msync(void *, size_t, int) __RENAME(__msync13); +#endif +#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); +#endif +__END_DECLS + +#endif /* !_KERNEL */ + +#endif /* !_SYS_MMAN_H_ */ |