libgloss/epiphany/_isatty.c

   1 /* isatty.c
   2
   3    Copyright (c) 1994-2009  Red Hat, Inc. All rights reserved.
   4    Copyright (c) 2012 Adapteva, Inc.
   5
   6    This copyrighted material is made available to anyone wishing to use,
   7    modify, copy, or redistribute it subject to the terms and conditions
   8    of the BSD License.   This program is distributed in the hope that
   9    it will be useful, but WITHOUT ANY WARRANTY expressed or implied,
  10    including the implied warranties of MERCHANTABILITY or FITNESS FOR
  11    A PARTICULAR PURPOSE.  A copy of this license is available at
  12    http://www.opensource.org/licenses. Any Red Hat trademarks that are
  13    incorporated in the source code or documentation are not subject to
  14    the BSD License and may only be used or replicated with the express
  15    permission of Red Hat, Inc.  */
  16
  17 /* Dumb implementation so programs will at least run.  */
  18
  19 #include <sys/stat.h>
  20 #include <errno.h>
  21 #include "epiphany-syscalls.h"
  22
  23 int
  24 _isatty (int fd)
  25 {
  26   struct stat buf;
  27
  28   if (_fstat (fd, &buf) < 0) {
  29     errno = EBADF;
  30     return 0;
  31   }
  32   if (S_ISCHR (buf.st_mode))
  33     return 1;
  34   errno = ENOTTY;
  35   return 0;
  36 }