1 /*
2 * Copyright 2001 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
4 */
5
6 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
7 /* All Rights Reserved */
8
9 /*
10 * Copyright (c) 1980 Regents of the University of California.
11 * All rights reserved. The Berkeley software License Agreement
12 * specifies the terms and conditions for redistribution.
13 */
14
15 #ifndef lint
16 static char
17 sccsid[] = "@(#)tstp.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
18 #endif /* not lint */
19
20 #include <sys/types.h>
21 #include <signal.h>
22 #include "curses.ext"
23 #include <sgtty.h>
24
25 /*
26 * handle stop and start signals
27 *
28 * @(#)tstp.c 5.1 (Berkeley) 6/7/85
29 */
30
31 void
tstp(void)32 tstp(void)
33 {
34 #ifdef SIGTSTP
35
36 SGTTY tty;
37 #ifdef DEBUG
38 if (outf)
39 (void) fflush(outf);
40 #endif
41 tty = _tty;
42 (void) mvcur(0, COLS - 1, LINES - 1, 0);
43 (void) endwin();
44 (void) fflush(stdout);
45 /* reset signal handler so kill below stops us */
46 (void) signal(SIGTSTP, SIG_DFL);
47 (void) sigsetmask(sigblock(0) &~ sigmask(SIGTSTP));
48 (void) kill(0, SIGTSTP);
49 (void) sigblock(sigmask(SIGTSTP));
50 (void) signal(SIGTSTP, (void(*)(int))tstp);
51 _tty = tty;
52 (void) stty(_tty_ch, &_tty);
53 (void) wrefresh(curscr);
54 #endif /* SIGTSTP */
55 }
56