1 files changed, 45 insertions, 0 deletions
diff --git a/libio/ioftell.c b/libio/ioftell.c
new file mode 100644
index 00000000000..d49ddaac821
--- /dev/null
+++ b/libio/ioftell.c
@@ -0,0 +1,45 @@
+/* 
+Copyright (C) 1993 Free Software Foundation
+
+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 "libioP.h"
+#include <errno.h>
+/* ANSI explicily requires setting errno to a positive value on failure. */
+
+long int
+DEFUN(_IO_ftell, (fp),
+      _IO_FILE* fp)
+{
+  _IO_pos_t pos;
+  CHECK_FILE(fp, -1L);
+  pos = _IO_seekoff(fp, 0, _IO_seek_cur, 0);
+  if (pos == _IO_pos_BAD)
+    {
+#ifdef EIO
+      if (errno == 0)
+	errno = EIO;
+#endif
+      return -1L;
+    }
+  return _IO_pos_as_off(pos);
+}