From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/posix/isatty.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 sysdeps/posix/isatty.c (limited to 'sysdeps/posix/isatty.c') diff --git a/sysdeps/posix/isatty.c b/sysdeps/posix/isatty.c new file mode 100644 index 0000000000..7536b1eeed --- /dev/null +++ b/sysdeps/posix/isatty.c @@ -0,0 +1,39 @@ +/* Copyright (C) 1991, 1995 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include +#include +#include + +/* Return 1 if FD is a terminal, 0 if not. */ +int +DEFUN(__isatty, (fd), int fd) +{ + int save; + int is_tty; + struct termios term; + + save = errno; + is_tty = __tcgetattr(fd, &term) == 0; + errno = save; + + return is_tty; +} + +weak_alias (__isatty, isatty) -- cgit v1.2.3