projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| b059c7be DF |
1 | /* |
| 2 | * Copyright (c) 1980 Regents of the University of California. | |
| 3 | * All rights reserved. The Berkeley software License Agreement | |
| 4 | * specifies the terms and conditions for redistribution. | |
| 5 | */ | |
| 6 | ||
| 7 | #ifndef lint | |
| 8 | static char sccsid[] = "@(#)tstp.c 5.1 (Berkeley) %G%"; | |
| 9 | #endif not lint | |
| 10 | ||
| bd2eadcc KA |
11 | # include <signal.h> |
| 12 | ||
| bd2eadcc KA |
13 | # include "curses.ext" |
| 14 | ||
| 15 | /* | |
| 16 | * handle stop and start signals | |
| 17 | * | |
| b059c7be | 18 | * @(#)tstp.c 5.1 (Berkeley) %G% |
| bd2eadcc KA |
19 | */ |
| 20 | tstp() { | |
| 21 | ||
| 166537b0 KA |
22 | # ifdef SIGTSTP |
| 23 | ||
| bd2eadcc | 24 | SGTTY tty; |
| 7e8a2685 | 25 | int omask; |
| bd2eadcc KA |
26 | # ifdef DEBUG |
| 27 | if (outf) | |
| 28 | fflush(outf); | |
| 29 | # endif | |
| 30 | tty = _tty; | |
| 31 | mvcur(0, COLS - 1, LINES - 1, 0); | |
| 32 | endwin(); | |
| 33 | fflush(stdout); | |
| 7e8a2685 SL |
34 | /* reset signal handler so kill below stops us */ |
| 35 | signal(SIGTSTP, SIG_DFL); | |
| 36 | #define mask(s) (1 << ((s)-1)) | |
| 37 | omask = sigsetmask(sigblock(0) &~ mask(SIGTSTP)); | |
| bd2eadcc | 38 | kill(0, SIGTSTP); |
| 7e8a2685 | 39 | sigblock(mask(SIGTSTP)); |
| bd2eadcc KA |
40 | signal(SIGTSTP, tstp); |
| 41 | _tty = tty; | |
| 42 | stty(_tty_ch, &_tty); | |
| 43 | wrefresh(curscr); | |
| 166537b0 | 44 | # endif SIGTSTP |
| bd2eadcc | 45 | } |