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3118429089
[f]stat on Windows is messy: we need to use _stati64 for maximum compatibility, but because there is a bunch of stuff wrapped in macros, autoconf sometimes gets the wrong answers. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 1996-2017 The NASM Authors - All Rights Reserved
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* See the file AUTHORS included with the NASM distribution for
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* the specific copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following
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* conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ----------------------------------------------------------------------- */
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#ifndef NASMLIB_FILE_H
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#define NASMLIB_FILE_H
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#include "compiler.h"
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#include "nasmlib.h"
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#include "error.h"
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#include <errno.h>
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#ifdef HAVE_FCNTL_H
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# include <fcntl.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_STAT_H
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# include <sys/stat.h>
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#endif
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#ifdef HAVE_IO_H
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# include <io.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_SYS_MMAN_H
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# include <sys/mman.h>
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#endif
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#if !defined(HAVE_ACCESS) && defined(HAVE__ACCESS)
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# define HAVE_ACCESS 1
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# define access _access
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#endif
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#ifndef R_OK
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# define R_OK 4 /* Classic Unix constant, same on Windows */
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#endif
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/* Can we adjust the file size without actually writing all the bytes? */
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#ifdef HAVE__CHSIZE_S
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# define nasm_ftruncate(fd,size) _chsize_s(fd,size)
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#elif defined(HAVE__CHSIZE)
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# define nasm_ftruncate(fd,size) _chsize(fd,size)
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#elif defined(HAVE_FTRUNCATE)
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# define nasm_ftruncate(fd,size) ftruncate(fd,size)
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#endif
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/*
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* On Win32/64, stat has a 32-bit file size but _stati64 has a 64-bit file
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* size. Things get complicated because some of these may be macros,
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* which autoconf won't pick up on as the standard autoconf tests do
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* #undef.
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*/
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#ifdef _stati64
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# define HAVE_STRUCT__STATI64 1
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# define HAVE__STATI64 1
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#endif
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#ifdef _fstati64
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# define HAVE__FSTATI64 1
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#endif
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#ifdef HAVE_STRUCT__STATI64
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typedef struct _stati64 nasm_struct_stat;
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# ifdef HAVE__STATI64
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# define nasm_stat _stati64
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# endif
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# ifdef HAVE__FSTATI64
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# define nasm_fstat _fstati64
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# endif
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#elif defined(HAVE_STRUCT_STAT)
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typedef struct stat nasm_struct_stat;
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# ifdef HAVE_STAT
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# define nasm_stat stat
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# endif
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# ifdef HAVE_FSTAT
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# define nasm_fstat fstat
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# endif
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#endif
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#ifndef HAVE_FILENO
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# ifdef fileno /* autoconf doesn't always pick up macros */
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# define HAVE_FILENO 1
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# elif defined(HAVE__FILENO)
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# define HAVE_FILENO 1
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# define fileno _fileno
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# endif
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#endif
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/* These functions are utterly useless without fileno() */
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#ifndef HAVE_FILENO
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# undef nasm_fstat
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# undef nasm_ftruncate
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# undef HAVE_MMAP
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# undef HAVE__FILELENGTHI64
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#endif
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#endif /* NASMLIB_FILE_H */
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