mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-27 05:00:15 +00:00
92 lines
3.0 KiB
C
92 lines
3.0 KiB
C
/* Copyright (C) 1993-2020 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, see
|
|
<https://www.gnu.org/licenses/>.
|
|
|
|
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. */
|
|
|
|
/* We need to avoid the header declarations of these, because
|
|
the types don't match _IO_fgetpos and then the compiler will
|
|
complain about the mismatch when we do the alias below. */
|
|
#define _IO_new_fgetpos64 __renamed__IO_new_fgetpos64
|
|
#define _IO_fgetpos64 __renamed__IO_fgetpos64
|
|
#define fgetpos64 __renamed_fgetpos64
|
|
|
|
#include "libioP.h"
|
|
|
|
#undef _IO_new_fgetpos64
|
|
#undef _IO_fgetpos64
|
|
#undef fgetpos64
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <shlib-compat.h>
|
|
|
|
int
|
|
_IO_new_fgetpos (FILE *fp, __fpos_t *posp)
|
|
{
|
|
off64_t pos;
|
|
int result = 0;
|
|
CHECK_FILE (fp, EOF);
|
|
_IO_acquire_lock (fp);
|
|
pos = _IO_seekoff_unlocked (fp, 0, _IO_seek_cur, 0);
|
|
if (_IO_in_backup (fp) && pos != _IO_pos_BAD)
|
|
{
|
|
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. */
|
|
if (errno == 0)
|
|
__set_errno (EIO);
|
|
result = EOF;
|
|
}
|
|
else if ((off64_t) (__typeof (posp->__pos)) pos != pos)
|
|
{
|
|
__set_errno (EOVERFLOW);
|
|
result = EOF;
|
|
}
|
|
else
|
|
{
|
|
posp->__pos = pos;
|
|
if (fp->_mode > 0 && __libio_codecvt_encoding (fp->_codecvt) < 0)
|
|
/* This is a stateful encoding, safe the state. */
|
|
posp->__state = fp->_wide_data->_IO_state;
|
|
}
|
|
|
|
_IO_release_lock (fp);
|
|
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);
|
|
|
|
#ifdef __OFF_T_MATCHES_OFF64_T
|
|
strong_alias (_IO_new_fgetpos, _IO_new_fgetpos64)
|
|
strong_alias (_IO_new_fgetpos64, __new_fgetpos64)
|
|
versioned_symbol (libc, _IO_new_fgetpos64, _IO_fgetpos64, GLIBC_2_2);
|
|
versioned_symbol (libc, __new_fgetpos64, fgetpos64, GLIBC_2_2);
|
|
#endif
|