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/*
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/*
FUNCTION
<<fopen64>>---open a large file
INDEX
fopen64
INDEX
_fopen64_r
SYNOPSIS
#include <stdio.h>
FILE *fopen64(const char *<[file]>, const char *<[mode]>);
FILE *_fopen64_r(void *<[reent]>,
const char *<[file]>, const char *<[mode]>);
DESCRIPTION
<<fopen64>> is identical to <<fopen>> except it opens a large file that
is potentially >2GB in size. See <<fopen>> for further details.
RETURNS
<<fopen64>> return a file pointer which you can use for other file
operations, unless the file you requested could not be opened; in that
situation, the result is <<NULL>>. If the reason for failure was an
invalid string at <[mode]>, <<errno>> is set to <<EINVAL>>.
PORTABILITY
<<fopen64>> is a glibc extension.
Supporting OS subroutines required: <<close>>, <<fstat64>>, <<isatty>>,
<<lseek64>>, <<open64>>, <<read>>, <<sbrk>>, <<write>>.
*/
/* Copied from fopen.c */
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "%W% (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */
#include <stdio.h>
#include <errno.h>
#include "local.h"
#ifdef __CYGWIN__
#include <fcntl.h>
#endif
#include <sys/lock.h>
#ifdef __LARGE64_FILES
FILE *
_fopen64_r (struct _reent *ptr,
const char *file,
const char *mode)
{
register FILE *fp;
register int f;
int flags, oflags;
if ((flags = __sflags (ptr, mode, &oflags)) == 0)
return NULL;
if ((fp = __sfp (ptr)) == NULL)
return NULL;
if ((f = _open64_r (ptr, file, oflags, 0666)) < 0)
{
_newlib_sfp_lock_start ();
fp->_flags = 0; /* release */
#ifndef __SINGLE_THREAD__
__lock_close_recursive (fp->_lock);
#endif
_newlib_sfp_lock_end ();
return NULL;
}
_newlib_flockfile_start (fp);
fp->_file = f;
fp->_flags = flags;
fp->_cookie = (void *) fp;
fp->_read = __sread;
fp->_write = __swrite64;
fp->_seek = __sseek;
fp->_seek64 = __sseek64;
fp->_close = __sclose;
if (fp->_flags & __SAPP)
_fseeko64_r (ptr, fp, 0, SEEK_END);
#ifdef __SCLE
if (__stextmode (fp->_file))
fp->_flags |= __SCLE;
#endif
fp->_flags |= __SL64;
_newlib_flockfile_end (fp);
return fp;
}
#ifndef _REENT_ONLY
FILE *
fopen64 (const char *file,
const char *mode)
{
return _fopen64_r (_REENT, file, mode);
}
#endif
#endif /* __LARGE64_FILES */
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