io/ttyname_r.c

   1 /* Copyright (C) 1991-2020 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 Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the 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    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <unistd.h>
  20
  21
  22 /* Store at most BUFLEN characters the pathname of the terminal FD is
  23    open on in BUF.  Return 0 on success,  otherwise an error number.  */
  24 int
  25 __ttyname_r (int fd, char *buf, size_t buflen)
  26 {
  27   __set_errno (ENOSYS);
  28   return ENOSYS;
  29 }
  30 weak_alias (__ttyname_r, ttyname_r)
  31
  32 stub_warning (ttyname_r)