sysdeps/stub/ttyname.c

   1 /* Copyright (C) 1991 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <errno.h>
  21 #include <stddef.h>
  22 #include <unistd.h>
  23
  24
  25 char *__ttyname = NULL;
  26
  27 /* Return the pathname of the terminal FD is open on, or NULL on errors.
  28    The returned storage is good only until the next call to this function.  */
  29 char *
  30 DEFUN(ttyname, (fd), int fd)
  31 {
  32   errno = ENOSYS;
  33   return NULL;
  34 }
  35
  36
  37 #ifdef   HAVE_GNU_LD
  38
  39 #include <gnu-stabs.h>
  40
  41 stub_warning(ttyname);
  42
  43 #endif  /* GNU stabs.  */