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- /* signal.c -- A file which should cantain some *REAL* signals management. */
-
- /* Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Written by Tudor Hulubei and Andrei Pitis. */
-
-
- #ifdef HAVE_CONFIG_H
- #include <config.h>
- #endif
-
- #include <stdio.h>
-
- #ifdef HAVE_STDLIB_H
- #include <stdlib.h>
- #else /* !HAVE_STDLIB_H */
- #include "ansi_stdlib.h"
- #endif /* !HAVE_STDLIB_H */
-
- #include <signal.h>
-
- #include "signals.h"
- #include "inputline.h"
- #include "tty.h"
- #include "misc.h"
-
-
- extern pid_t pid;
- extern char *screen;
- extern input_line_t *input;
-
-
- int suspend_allowed = OFF;
- int signals_status;
- int UserHeartAttack = 0;
-
-
- #ifdef SIGSTOP
-
- RETSIGTYPE
- suspend(signum)
- int signum;
- {
- signal(signum, suspend);
-
- if (suspend_allowed)
- {
- tty_set_mode(TTY_CANONIC);
- tty_defaults();
- tty_put_screen(screen);
- kill(pid, SIGSTOP);
- }
- }
-
- #endif
-
-
- RETSIGTYPE
- resume(signum)
- int signum;
- {
- extern int current_mode;
- extern void refresh_after_suspend PROTO ((int));
-
- signal(signum, resume);
-
- refresh_after_suspend(current_mode);
- }
-
-
- RETSIGTYPE
- user_panic(signum)
- int signum;
- {
- signal(signum, user_panic);
-
- UserHeartAttack = 1;
- }
-
-
- void
- signals_dfl()
- {
- signal(SIGTERM, SIG_DFL);
- signal(SIGQUIT, SIG_DFL);
- signal(SIGINT , SIG_DFL);
- }
-
-
- void
- signals(status)
- int status;
- {
- signals_status = status;
- signal(SIGTERM, status == ON ? fatal_signal : SIG_IGN);
- signal(SIGQUIT, status == ON ? fatal_signal : SIG_IGN);
- signal(SIGINT , status == ON ? user_panic : SIG_IGN);
- }
-
-
- void
- ignore_signals()
- {
- signal(SIGILL, SIG_IGN);
- signal(SIGTRAP, SIG_IGN);
- signal(SIGABRT, SIG_IGN);
- signal(SIGUSR1, SIG_IGN);
- signal(SIGUSR2, SIG_IGN);
- signal(SIGPIPE, SIG_IGN);
- signal(SIGFPE, SIG_IGN);
- }
-
-
- void
- restore_signals()
- {
- signal(SIGILL, SIG_DFL);
- signal(SIGTRAP, SIG_DFL);
- signal(SIGABRT, SIG_DFL);
- signal(SIGUSR1, SIG_DFL);
- signal(SIGUSR2, SIG_DFL);
- signal(SIGPIPE, SIG_DFL);
- signal(SIGFPE, SIG_DFL);
- }
-