/* $Id: final.c,v 3.0 1992/02/01 03:09:32 davison Trn $ */ /* This software is Copyright 1991 by Stan Barber. * * Permission is hereby granted to copy, reproduce, redistribute or otherwise * use this software as long as: there is no monetary profit gained * specifically from the use or reproduction of this software, it is not * sold, rented, traded or otherwise marketed, and this copyright notice is * included prominently in any copy made. * * The author make no claims as to the fitness or correctness of this software * for any use whatsoever, and it is provided as is. Any use of this software * is at the user's own risk. */ #include "EXTERN.h" #include "common.h" #include "util.h" #include "cache.h" #include "bits.h" #include "term.h" #include "ng.h" #include "init.h" #include "last.h" #include "rcstuff.h" #include "ngdata.h" #include "artio.h" #include "intrp.h" #include "nntp.h" #include "INTERN.h" #include "final.h" #ifndef sigmask #define sigmask(m) (1 << ((m)-1)) #endif void final_init() { #ifdef SIGTSTP sigset(SIGTSTP, stop_catcher); /* job control signals */ sigset(SIGTTOU, stop_catcher); /* job control signals */ sigset(SIGTTIN, stop_catcher); /* job control signals */ #endif sigset(SIGINT, int_catcher); /* always catch interrupts */ #ifdef SIGHUP sigset(SIGHUP, sig_catcher); /* and hangups */ #endif #ifdef SIGWINCH sigset(SIGWINCH, winch_catcher); #endif #ifndef lint #ifdef SIGEMT sigignore(SIGEMT); #endif #endif #ifdef DEBUG /* sometimes we WANT a core dump */ if (debug & DEB_COREDUMPSOK) return; #endif sigset(SIGILL, sig_catcher); #ifdef SIGTRAP sigset(SIGTRAP, sig_catcher); #endif sigset(SIGFPE, sig_catcher); #ifdef SIGBUS sigset(SIGBUS, sig_catcher); #endif sigset(SIGSEGV, sig_catcher); #ifdef SIGSYS sigset(SIGSYS, sig_catcher); #endif sigset(SIGTERM, sig_catcher); #ifdef SIGXCPU sigset(SIGXCPU, sig_catcher); #endif #ifdef SIGXFSZ sigset(SIGXFSZ, sig_catcher); #endif } void /* very much void */ finalize(status) int status; { termlib_reset(); if (bizarre) resetty(); if (lockname && *lockname) UNLINK(lockname); #ifdef USE_NNTP nntp_cleanup(); #endif if (status < 0) { chdir("/usr/tmp"); sigset(SIGILL,SIG_DFL); #ifdef HAS_SIGBLOCK sigsetmask(sigblock(0) & ~(sigmask(SIGILL) | sigmask(SIGIOT))); #endif abort(); } exit(status); } /* come here on interrupt */ Signal_t int_catcher(dummy) int dummy; { sigset(SIGINT,int_catcher); #ifdef DEBUG if (debug) write(2,"int_catcher\n",12); #endif if (!waiting) { if (int_count) { /* was there already an interrupt? */ write(2,"\nBye-bye.\n",10); sig_catcher(0); /* emulate the other signals */ } int_count++; } } /* come here on signal other than interrupt, stop, or cont */ Signal_t sig_catcher(signo) int signo; { #ifdef VERBOSE static char *signame[] = { "", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT", "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS", "PIPE", "ALRM", "TERM", "???" #ifdef SIGTSTP ,"STOP", "TSTP", "CONT", "CHLD", "TTIN", "TTOU", "TINT", "XCPU", "XFSZ" #ifdef SIGPROF ,"VTALARM", "PROF" #endif #endif }; #endif #ifdef DEBUG if (debug) { printf("\nSIG%s--.newsrc not restored in debug\n",signame[signo]); finalize(-1); } #endif if (panic) { #ifdef HAS_SIGBLOCK sigsetmask(sigblock(0) & ~(sigmask(SIGILL) | sigmask(SIGIOT))); #endif abort(); } (void) sigset(SIGILL,SIG_DFL); panic = TRUE; /* disable terminal I/O */ if (doing_ng) { /* need we reconstitute rc line? */ yankback(); bits_to_rc(); /* then do so (hope this works) */ } doing_ng = FALSE; if (rc_changed) /* need we write .newsrc out? */ write_rc(); /* then do so */ rc_changed = FALSE; #ifdef SIGHUP if (signo != SIGHUP) #endif #ifdef VERBOSE IF(verbose) printf("\nCaught %s%s--.newsrc restored\n", signo ? "a SIG" : "an internal error", signame[signo]); ELSE #endif #ifdef TERSE printf("\nSignal %d--bye bye\n",signo); #endif switch (signo) { #ifdef SIGBUS case SIGBUS: #endif case SIGILL: case SIGSEGV: finalize(-signo); } finalize(1); /* and blow up */ } #ifdef SIGTSTP /* come here on stop signal */ Signal_t stop_catcher(signo) int signo; { if (!waiting) { checkpoint_rc(); /* good chance of crash while stopped */ if (clear_on_stop) { clear(); putchar('\n') FLUSH; } termlib_reset(); resetty(); /* this is the point of all this */ #ifdef DEBUG if (debug) write(2,"stop_catcher\n",13); #endif sigset(signo,SIG_DFL); /* enable stop */ #ifdef HAS_SIGBLOCK sigsetmask(sigblock(0) & ~(1 << (signo-1))); #endif kill(0,signo); /* and do the stop */ savetty(); #ifdef MAILCALL mailcount = 0; /* force recheck */ #endif if (!panic) { if (!waiting) { termlib_init(); noecho(); /* set no echo */ crmode(); /* set cbreak mode */ forceme("\f"); /* cause a refresh */ /* (defined only if TIOCSTI defined) */ errno = 0; /* needed for getcmd */ } } } sigset(signo,stop_catcher); /* unenable the stop */ } #endif