mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 08:40:07 +00:00
40a982a9e1
2001-08-09 Ulrich Drepper <drepper@redhat.com> * libio/wfileops.c (_IO_wfile_seekoff): Don't even try to handle seeking with backup buffer present. Correct determining of internal buffer position. Reset also wide buffers if we reset the internal buffers. * libio/iofwide.c (_IO_fwide): Always determine file offset for wide streams. * libio/ioseekoff.c: Catch one unimplemented case. * libio/ftello.c: Don't abort if the wide stream has backup buffer. * libio/ftello64.c: Likewise. * libio/iofgetpos.c: Likewise. * libio/iofgetpos64.c: Likewise. * libio/ftell.c: Likewise. * libio/Makefile (tests): Add tst-ungetwc2. * libio/tst-ungetwc2.c: New file.
76 lines
2.5 KiB
C
76 lines
2.5 KiB
C
/* Copyright (C) 1993, 1995-1999, 2000, 2001 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA.
|
|
|
|
As a special exception, if you link the code in this file with
|
|
files compiled with a GNU compiler to produce an executable,
|
|
that does not cause the resulting executable to be covered by
|
|
the GNU Lesser General Public License. This exception does not
|
|
however invalidate any other reasons why the executable file
|
|
might be covered by the GNU Lesser General Public License.
|
|
This exception applies to code released by its copyright holders
|
|
in files containing the exception. */
|
|
|
|
#include "libioP.h"
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <shlib-compat.h>
|
|
|
|
int
|
|
_IO_new_fgetpos (fp, posp)
|
|
_IO_FILE *fp;
|
|
_IO_fpos_t *posp;
|
|
{
|
|
_IO_off_t pos;
|
|
int result = 0;
|
|
CHECK_FILE (fp, EOF);
|
|
_IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
|
|
_IO_flockfile (fp);
|
|
pos = _IO_seekoff (fp, 0, _IO_seek_cur, 0);
|
|
if (_IO_in_backup (fp))
|
|
{
|
|
if (fp->_mode <= 0)
|
|
pos -= fp->_IO_save_end - fp->_IO_save_base;
|
|
}
|
|
if (pos == _IO_pos_BAD)
|
|
{
|
|
/* ANSI explicitly requires setting errno to a positive value on
|
|
failure. */
|
|
#ifdef EIO
|
|
if (errno == 0)
|
|
__set_errno (EIO);
|
|
#endif
|
|
result = EOF;
|
|
}
|
|
else
|
|
{
|
|
posp->__pos = pos;
|
|
if (fp->_mode > 0
|
|
&& (*fp->_codecvt->__codecvt_do_encoding) (fp->_codecvt) < 0)
|
|
/* This is a stateful encoding, safe the state. */
|
|
posp->__state = fp->_wide_data->_IO_state;
|
|
}
|
|
|
|
_IO_funlockfile (fp);
|
|
_IO_cleanup_region_end (0);
|
|
return result;
|
|
}
|
|
|
|
strong_alias (_IO_new_fgetpos, __new_fgetpos)
|
|
versioned_symbol (libc, _IO_new_fgetpos, _IO_fgetpos, GLIBC_2_2);
|
|
versioned_symbol (libc, __new_fgetpos, fgetpos, GLIBC_2_2);
|