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diff --git a/libio/ftello.c b/libio/ftello.c
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+/* Copyright (C) 1993, 1995, 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU IO Library.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or (at
+ your option) any later version.
+
+ This 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this library; see the file COPYING. If not, write to
+ the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
+ MA 02111-1307, USA.
+
+ As a special exception, if you link this library with files
+ compiled with a GNU compiler to produce an executable, this does
+ not cause the resulting executable to be covered by the GNU General
+ Public License. This exception does not however invalidate any
+ other reasons why the executable file might be covered by the GNU
+ General Public License. */
+
+#include <stdio.h>
+#include <libioP.h>
+#include <errno.h>
+
+
+off_t
+ftello (fp)
+ _IO_FILE *fp;
+{
+ _IO_pos_t pos;
+ CHECK_FILE (fp, -1L);
+ _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+ _IO_flockfile (fp);
+ pos = _IO_seekoff (fp, 0, _IO_seek_cur, 0);
+ _IO_cleanup_region_end (1);
+ if (pos == _IO_pos_BAD)
+ {
+#ifdef EIO
+ if (errno == 0)
+ __set_errno (EIO);
+#endif
+ return -1L;
+ }
+ return _IO_pos_as_off (pos);
+}