1 files changed, 50 insertions, 0 deletions
diff --git a/libio/ftello.c b/libio/ftello.c
new file mode 100644
index 0000000000..7585eea9ec
--- /dev/null
+++ b/libio/ftello.c
@@ -0,0 +1,50 @@
+/* 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);
+}