74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
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/*
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* Copyright (c) 1981 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)tstp.c 5.6 (Berkeley) 3/3/91";
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#endif /* not lint */
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# include <signal.h>
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# include "curses.ext"
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/*
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* handle stop and start signals
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*
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* @(#)tstp.c 5.6 (Berkeley) 3/3/91
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*/
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void
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tstp() {
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# ifdef SIGTSTP
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SGTTY tty;
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int omask;
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# ifdef DEBUG
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if (outf)
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fflush(outf);
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# endif
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tty = _tty;
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mvcur(0, COLS - 1, LINES - 1, 0);
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endwin();
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fflush(stdout);
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/* reset signal handler so kill below stops us */
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signal(SIGTSTP, SIG_DFL);
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#define mask(s) (1 << ((s)-1))
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omask = sigsetmask(sigblock(0) &~ mask(SIGTSTP));
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kill(0, SIGTSTP);
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sigblock(mask(SIGTSTP));
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signal(SIGTSTP, tstp);
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_tty = tty;
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ioctl(_tty_ch, TIOCSETP, &_tty);
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wrefresh(curscr);
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# endif SIGTSTP
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}
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