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Revision 1.2, Tue Nov 12 13:54:51 2013 UTC (10 years, 6 months ago) by deraadt
Branch: MAIN
CVS Tags: OPENBSD_5_8_BASE, OPENBSD_5_8, OPENBSD_5_7_BASE, OPENBSD_5_7, OPENBSD_5_6_BASE, OPENBSD_5_6, OPENBSD_5_5_BASE, OPENBSD_5_5
Changes since 1.1: +2 -2 lines 

simpler prototype repairs

/*      $OpenBSD: tty.c,v 1.2 2013/11/12 13:54:51 deraadt Exp $	*/

/*
 * Copyright (c) 2013, Otto Moerbeek <otto@drijf.net>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <errno.h>
#include <signal.h>
#include <histedit.h>
#include <termios.h>
#include "extern.h"

struct termios ttysaved, ttyedit;

static int
settty(struct termios *t)
{
	int ret;

	while ((ret = tcsetattr(0, TCSADRAIN,  t) == -1) && errno == EINTR)
		continue;
	return ret;
}

int
gettty(struct termios *t)
{
	int ret;

	while ((ret = tcgetattr(0, t) == -1) && errno == EINTR)
		continue;
	return ret;
}

/* ARGSUSED */
void
tstpcont(int sig)
{
	int save_errno = errno;

	if (sig == SIGTSTP) {
		signal(SIGCONT, tstpcont);
		gettty(&ttyedit);
		settty(&ttysaved);		
	} else {
		signal(SIGTSTP, tstpcont);
		settty(&ttyedit);		
	}
	signal(sig, SIG_DFL);
	kill(0, sig);
	errno = save_errno;
}