usr/src/usr.bin/window/wwsuspend.c

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not 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 MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)wwsuspend.c 3.9 (Berkeley) %G%";
#endif /* not lint */

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

wwsuspend()
{
        int (*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);
        (*tt.tt_init)();
        wwredraw();
        (void) signal(SIGTSTP, oldsig);
}