GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/termios/tcflow.c Lines: 0 14 0.0 %
Date: 2017-11-13 Branches: 0 11 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: tcflow.c,v 1.6 2017/09/10 18:20:00 guenther Exp $ */
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/*-
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 * Copyright (c) 1989, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/ioctl.h>
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#include <termios.h>
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#include <unistd.h>
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#include <errno.h>
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int
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tcflow(int fd, int action)
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{
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	struct termios term;
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	u_char c;
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	switch (action) {
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	case TCOOFF:
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		return (ioctl(fd, TIOCSTOP, 0));
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	case TCOON:
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		return (ioctl(fd, TIOCSTART, 0));
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	case TCION:
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	case TCIOFF:
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		if (tcgetattr(fd, &term) == -1)
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			return (-1);
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		c = term.c_cc[action == TCIOFF ? VSTOP : VSTART];
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		if (c != _POSIX_VDISABLE &&
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		    HIDDEN(write)(fd, &c, sizeof(c)) == -1)
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			return (-1);
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		return (0);
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	default:
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		errno = EINVAL;
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		return (-1);
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	}
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	/* NOTREACHED */
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}