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Diffstat (limited to 'sysdeps/generic/sys/mman.h')
-rw-r--r-- | sysdeps/generic/sys/mman.h | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/sysdeps/generic/sys/mman.h b/sysdeps/generic/sys/mman.h deleted file mode 100644 index 8596e70..0000000 --- a/sysdeps/generic/sys/mman.h +++ /dev/null @@ -1,128 +0,0 @@ -/* Definitions for BSD-style memory management. Generic/4.4 BSD version. - Copyright (C) 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -/* These are the bits used by 4.4 BSD and its derivatives. On systems - (such as GNU) where these facilities are not system services but can be - emulated in the C library, these are the definitions we emulate. */ - -#ifndef _SYS_MMAN_H - -#define _SYS_MMAN_H 1 -#include <features.h> - -#include <bits/types.h> -#define __need_size_t -#include <stddef.h> - - -/* Protections are chosen from these bits, OR'd together. The - implementation does not necessarily support PROT_EXEC or PROT_WRITE - without PROT_READ. The only guarantees are that no writing will be - allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */ - -#define PROT_NONE 0x00 /* No access. */ -#define PROT_READ 0x04 /* Pages can be read. */ -#define PROT_WRITE 0x02 /* Pages can be written. */ -#define PROT_EXEC 0x01 /* Pages can be executed. */ - - -/* Flags contain mapping type, sharing type and options. */ - -/* Mapping type (must choose one and only one of these). */ -#ifdef __USE_BSD -# define MAP_FILE 0x0001 /* Mapped from a file or device. */ -# define MAP_ANON 0x0002 /* Allocated from anonymous virtual memory. */ -# define MAP_TYPE 0x000f /* Mask for type field. */ -#endif - -/* Sharing types (must choose one and only one of these). */ -#ifdef __USE_BSD -# define MAP_COPY 0x0020 /* Virtual copy of region at mapping time. */ -#endif -#define MAP_SHARED 0x0010 /* Share changes. */ -#define MAP_PRIVATE 0x0000 /* Changes private; copy pages on write. */ - -/* Other flags. */ -#define MAP_FIXED 0x0100 /* Map address must be exactly as requested. */ -#ifdef __USE_BSD -# define MAP_NOEXTEND 0x0200 /* For MAP_FILE, don't change file size. */ -# define MAP_HASSEMPHORE 0x0400 /* Region may contain semaphores. */ -# define MAP_INHERIT 0x0800 /* Region is retained after exec. */ -#endif - -/* Advice to `madvise'. */ -#ifdef __USE_BSD -# 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 /* Don't need these pages. */ -#endif - -/* Return value of `mmap' in case of an error. */ -#define MAP_FAILED ((__ptr_t) -1) - - -__BEGIN_DECLS -/* Map addresses starting near ADDR and extending for LEN bytes. from - OFFSET into the file FD describes according to PROT and FLAGS. If ADDR - is nonzero, it is the desired mapping address. If the MAP_FIXED bit is - set in FLAGS, the mapping will be at ADDR exactly (which must be - page-aligned); otherwise the system chooses a convenient nearby address. - The return value is the actual mapping address chosen or MAP_FAILED - for errors (in which case `errno' is set). A successful `mmap' call - deallocates any previous mapping for the affected region. */ - -#ifndef __USE_FILE_OFFSET64 -extern __ptr_t mmap __P ((__ptr_t __addr, size_t __len, int __prot, - int __flags, int __fd, __off_t __offset)); -#else -extern __ptr_t mmap __P ((__ptr_t __addr, size_t __len, int __prot, - int __flags, int __fd, __off_t __offset)) - __asm__ ("mmap64"); -#endif -#ifdef __USE_LARGEFILE64 -extern __ptr_t mmap64 __P ((__ptr_t __addr, size_t __len, int __prot, - int __flags, int __fd, __off64_t __offset)); -#endif - -/* Deallocate any mapping for the region starting at ADDR and extending LEN - bytes. Returns 0 if successful, -1 for errors (and sets errno). */ -extern int munmap __P ((__ptr_t __addr, size_t __len)); - -/* Change the memory protection of the region starting at ADDR and - extending LEN bytes to PROT. Returns 0 if successful, -1 for errors - (and sets errno). */ -extern int mprotect __P ((__ptr_t __addr, size_t __len, int __prot)); - -/* Synchronize the region starting at ADDR and extending LEN bytes with the - file it maps. Filesystem operations on a file being mapped are - unpredictable before this is done. Flags are from the MS_* set. */ -extern int msync __P ((__ptr_t __addr, size_t __len, int __flags)); - -#ifdef __USE_BSD -/* Advise the system about particular usage patterns the program follows - for the region starting at ADDR and extending LEN bytes. */ -extern int madvise __P ((__ptr_t __addr, size_t __len, int __advice)); -#endif - -__END_DECLS - - -#endif /* sys/mman.h */ |