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/* Copyright (C) 1991, 1996, 1997 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <stddef.h>
#include <termios.h>
#include <unistd.h>
#include "bsdtty.h"
/* Wait for pending output to be written on FD. */
int
__libc_tcdrain (int fd)
{
/* The TIOCSETP control waits for pending output to be written before
affecting its changes, so we use that without changing anything. */
struct sgttyb b;
if (__ioctl (fd, TIOCGETP, (void *) &b) < 0 ||
__ioctl (fd, TIOCSETP, (void *) &b) < 0)
return -1;
return 0;
}
weak_alias (__libc_tcdrain, tcdrain)
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