update from main archive

[thirdparty/glibc.git] / sysdeps / unix / sysv / tcdrain.c

/* Copyright (C) 1992, 1996 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 <errno.h>
#include <stddef.h>
#include <termios.h>
#include <unistd.h>
#include <sysv_termio.h>
#include <sys/ioctl.h>

/* Wait for pending output to be written on FD.  */
int
__libc_tcdrain (int fd)
{
  /* With an argument of 1, TCSBRK just waits for output to drain.  */
  return __ioctl (fd, _TCSBRK, 1);
}
weak_alias (__libc_tcdrain, tcdrain)