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- /*
- * Copyright (c) 1981 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)tstp.c 5.7 (Berkeley) 8/23/92";
- #endif /* not lint */
-
- #include <curses.h>
- #include <errno.h>
- #include <signal.h>
- #include <termios.h>
- #include <unistd.h>
-
- /*
- * tstp --
- * Handle stop and start signals.
- */
- void
- tstp(signo)
- int signo;
- {
- struct termios save;
- sigset_t set;
-
- /* Get the current terminal state. */
- if (tcgetattr(STDIN_FILENO, &save))
- return;
-
- /* Move the cursor to the end of the screen. */
- mvcur(0, COLS - 1, LINES - 1, 0);
-
- /* End the window. */
- endwin();
-
- /* Stop ourselves. */
- (void)sigemptyset(&set);
- (void)sigaddset(&set, SIGTSTP);
- (void)sigprocmask(SIG_UNBLOCK, &set, NULL);
- (void)signal(SIGTSTP, SIG_DFL);
- (void)kill(0, SIGTSTP);
-
- /* Time passes ... */
-
- /* Reset the signal handler. */
- (void)signal(SIGTSTP, tstp);
-
- /* Reset the terminal state. */
- (void)tcsetattr(STDIN_FILENO, TCSADRAIN, &save);
-
- /* Restart the screen. */
- wrefresh(curscr);
- }
-