4.3BSD-Reno/src/usr.bin/window/wwsuspend.c

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/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Edward Wang at The University of California, Berkeley.
 *
 * Redistribution and use in source and binary forms are permitted provided
 * that: (1) source distributions retain this entire copyright notice and
 * comment, and (2) distributions including binaries display the following
 * acknowledgement:  ``This product includes software developed by the
 * University of California, Berkeley and its contributors'' in the
 * documentation or other materials provided with the distribution and in
 * all advertising materials mentioning features or use of this software.
 * Neither the name of the University nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)wwsuspend.c	3.13 (Berkeley) 6/6/90";
#endif /* not lint */

#include "ww.h"
#include "tt.h"
#include <sys/signal.h>

wwsuspend()
{
	sig_t oldsig;

	oldsig = signal(SIGTSTP, SIG_IGN);
	wwend();
	(void) signal(SIGTSTP, SIG_DFL);
	(void) kill(0, SIGTSTP);
	(void) signal(SIGTSTP, SIG_IGN);
	(void) wwsettty(0, &wwnewtty, &wwoldtty);
	xxstart();
	wwredraw();		/* XXX, clears the screen twice */
	(void) signal(SIGTSTP, oldsig);
}