isatty.c 1.0 KB

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  1. /* Copyright (C) 1991, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, write to the Free
  13. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  14. 02111-1307 USA. */
  15. #include <unistd.h>
  16. #include <termios.h>
  17. /* Return 1 if FD is a terminal, 0 if not. */
  18. int isatty (int fd)
  19. {
  20. struct termios term;
  21. return tcgetattr (fd, &term) == 0;
  22. }
  23. libc_hidden_def(isatty)