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 #pragma ident "%Z%%M% %I% %E% SMI" 16 17 #ifndef lint 18 static char 19 sccsid[] = "@(#)tstp.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */ 20 #endif /* not lint */ 21 22 #include <sys/types.h> 23 #include <signal.h> 24 #include "curses.ext" 25 #include <sgtty.h> 26 27 /* 28 * handle stop and start signals 29 * 30 * @(#)tstp.c 5.1 (Berkeley) 6/7/85 31 */ 32 33 void 34 tstp(void) 35 { 36 #ifdef SIGTSTP 37 38 SGTTY tty; 39 #ifdef DEBUG 40 if (outf) 41 (void) fflush(outf); 42 #endif 43 tty = _tty; 44 (void) mvcur(0, COLS - 1, LINES - 1, 0); 45 (void) endwin(); 46 (void) fflush(stdout); 47 /* reset signal handler so kill below stops us */ 48 (void) signal(SIGTSTP, SIG_DFL); 49 (void) sigsetmask(sigblock(0) &~ sigmask(SIGTSTP)); 50 (void) kill(0, SIGTSTP); 51 (void) sigblock(sigmask(SIGTSTP)); 52 (void) signal(SIGTSTP, (void(*)(int))tstp); 53 _tty = tty; 54 (void) stty(_tty_ch, &_tty); 55 (void) wrefresh(curscr); 56 #endif /* SIGTSTP */ 57 } 58