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39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
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/* Copyright (C) 1991 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <errno.h>
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#include <stddef.h>
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#include <termios.h>
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#include <unistd.h>
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#include "bsdtty.h"
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/* Wait for pending output to be written on FD. */
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int
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DEFUN(tcdrain, (fd), int fd)
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{
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/* The TIOCSETP control waits for pending output to be written before
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affecting its changes, so we use that without changing anything. */
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struct sgttyb b;
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if (__ioctl(fd, TIOCGETP, (PTR) &b) < 0 ||
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__ioctl(fd, TIOCSETP, (PTR) &b) < 0)
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return -1;
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return 0;
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}
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