fenv: only allow to enable for supported architectures
[uclibc-ng.git] / libc / termios / tcgetpgrp.c
blob7cec39c3d9dcc5a9ddd732104fd9ca0bf38295f1
1 /* Copyright (C) 1991, 1997, 2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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 <http://www.gnu.org/licenses/>. */
18 #include <sys/ioctl.h>
19 #include <errno.h>
20 #include <unistd.h>
21 #include <sys/types.h>
24 /* Return the foreground process group ID of FD. */
25 pid_t tcgetpgrp (int fd)
27 pid_t pgrp;
29 if (ioctl (fd, TIOCGPGRP, &pgrp) < 0)
30 return -1;
31 return pgrp;
33 libc_hidden_def (tcgetpgrp)