+/* $NetBSD: signal.c,v 1.8 2004/01/27 20:30:30 jsm Exp $ */
+
+/* "Larn is copyrighted 1986 by Noah Morgan.\n" */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__RCSID("$NetBSD: signal.c,v 1.8 2004/01/27 20:30:30 jsm Exp $");
+#endif /* not lint */
+
#include <signal.h>
-#include "header.h" /* "Larn is copyrighted 1986 by Noah Morgan.\n" */
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include "header.h"
+#include "extern.h"
+
+static void s2choose(void);
+static void cntlc(int);
+static void sgam(int);
+static void tstop(int);
+static void sigpanic(int);
+
#define BIT(a) (1<<((a)-1))
-extern char savefilename[],wizard,predostuff,nosignal;
-static s2choose() /* text to be displayed if ^C during intro screen */
- {
- cursor(1,24); lprcat("Press "); setbold(); lprcat("return"); resetbold();
- lprcat(" to continue: "); lflush();
- }
static void
-cntlc() /* what to do for a ^C */
- {
- if (nosignal) return; /* don't do anything if inhibited */
- signal(SIGQUIT,SIG_IGN); signal(SIGINT,SIG_IGN);
- quit(); if (predostuff==1) s2choose(); else showplayer();
+s2choose()
+{ /* text to be displayed if ^C during intro
+ * screen */
+ cursor(1, 24);
+ lprcat("Press ");
+ setbold();
+ lprcat("return");
+ resetbold();
+ lprcat(" to continue: ");
+ lflush();
+}
+
+static void
+cntlc(n)
+ int n;
+{ /* what to do for a ^C */
+ if (nosignal)
+ return; /* don't do anything if inhibited */
+ signal(SIGQUIT, SIG_IGN);
+ signal(SIGINT, SIG_IGN);
+ quit();
+ if (predostuff == 1)
+ s2choose();
+ else
+ showplayer();
lflush();
- signal(SIGQUIT,cntlc); signal(SIGINT,cntlc);
- }
+ signal(SIGQUIT, cntlc);
+ signal(SIGINT, cntlc);
+}
/*
* subroutine to save the game if a hangup signal
*/
static void
-sgam()
- {
- savegame(savefilename); wizard=1; died(-257); /* hangup signal */
- }
+sgam(n)
+ int n;
+{
+ savegame(savefilename);
+ wizard = 1;
+ died(-257); /* hangup signal */
+}
#ifdef SIGTSTP
static void
-tstop() /* control Y */
- {
- if (nosignal) return; /* nothing if inhibited */
- lcreat((char*)0); clearvt100(); lflush(); signal(SIGTSTP,SIG_DFL);
+tstop(n)
+ int n;
+{ /* control Y */
+ if (nosignal)
+ return; /* nothing if inhibited */
+ lcreat((char *) 0);
+ clearvt100();
+ lflush();
+ signal(SIGTSTP, SIG_DFL);
#ifdef SIGVTALRM
- /* looks like BSD4.2 or higher - must clr mask for signal to take effect*/
- sigsetmask(sigblock(0)& ~BIT(SIGTSTP));
+ /*
+ * looks like BSD4.2 or higher - must clr mask for signal to take
+ * effect
+ */
+ sigsetmask(sigblock(0) & ~BIT(SIGTSTP));
#endif
- kill(getpid(),SIGTSTP);
+ kill(getpid(), SIGTSTP);
- setupvt100(); signal(SIGTSTP,tstop);
- if (predostuff==1) s2choose(); else drawscreen();
- showplayer(); lflush();
- }
-#endif SIGTSTP
+ setupvt100();
+ signal(SIGTSTP, tstop);
+ if (predostuff == 1)
+ s2choose();
+ else
+ drawscreen();
+ showplayer();
+ lflush();
+}
+#endif /* SIGTSTP */
/*
* subroutine to issue the needed signal traps called from main()
*/
-static void sigpanic();
-static void sigill() { sigpanic(SIGILL); }
-static void sigtrap() { sigpanic(SIGTRAP); }
-static void sigiot() { sigpanic(SIGIOT); }
-static void sigemt() { sigpanic(SIGEMT); }
-static void sigfpe() { sigpanic(SIGFPE); }
-static void sigbus() { sigpanic(SIGBUS); }
-static void sigsegv() { sigpanic(SIGSEGV); }
-static void sigsys() { sigpanic(SIGSYS); }
-static void sigpipe() { sigpanic(SIGPIPE); }
-static void sigterm() { sigpanic(SIGTERM); }
+void
sigsetup()
- {
- signal(SIGQUIT, cntlc); signal(SIGINT, cntlc);
- signal(SIGKILL, SIG_IGN); signal(SIGHUP, sgam);
- signal(SIGILL, sigill); signal(SIGTRAP, sigtrap);
- signal(SIGIOT, sigiot); signal(SIGEMT, sigemt);
- signal(SIGFPE, sigfpe); signal(SIGBUS, sigbus);
- signal(SIGSEGV, sigsegv); signal(SIGSYS, sigsys);
- signal(SIGPIPE, sigpipe); signal(SIGTERM, sigterm);
+{
+ signal(SIGQUIT, cntlc);
+ signal(SIGINT, cntlc);
+ signal(SIGKILL, SIG_IGN);
+ signal(SIGHUP, sgam);
+ signal(SIGILL, sigpanic);
+ signal(SIGTRAP, sigpanic);
+ signal(SIGIOT, sigpanic);
+ signal(SIGEMT, sigpanic);
+ signal(SIGFPE, sigpanic);
+ signal(SIGBUS, sigpanic);
+ signal(SIGSEGV, sigpanic);
+ signal(SIGSYS, sigpanic);
+ signal(SIGPIPE, sigpanic);
+ signal(SIGTERM, sigpanic);
#ifdef SIGTSTP
- signal(SIGTSTP,tstop); signal(SIGSTOP,tstop);
-#endif SIGTSTP
- }
-
-#ifdef BSD /* for BSD UNIX? */
-
-static char *signame[NSIG] = { "",
-"SIGHUP", /* 1 hangup */
-"SIGINT", /* 2 interrupt */
-"SIGQUIT", /* 3 quit */
-"SIGILL", /* 4 illegal instruction (not reset when caught) */
-"SIGTRAP", /* 5 trace trap (not reset when caught) */
-"SIGIOT", /* 6 IOT instruction */
-"SIGEMT", /* 7 EMT instruction */
-"SIGFPE", /* 8 floating point exception */
-"SIGKILL", /* 9 kill (cannot be caught or ignored) */
-"SIGBUS", /* 10 bus error */
-"SIGSEGV", /* 11 segmentation violation */
-"SIGSYS", /* 12 bad argument to system call */
-"SIGPIPE", /* 13 write on a pipe with no one to read it */
-"SIGALRM", /* 14 alarm clock */
-"SIGTERM", /* 15 software termination signal from kill */
-"SIGURG", /* 16 urgent condition on IO channel */
-"SIGSTOP", /* 17 sendable stop signal not from tty */
-"SIGTSTP", /* 18 stop signal from tty */
-"SIGCONT", /* 19 continue a stopped process */
-"SIGCHLD", /* 20 to parent on child stop or exit */
-"SIGTTIN", /* 21 to readers pgrp upon background tty read */
-"SIGTTOU", /* 22 like TTIN for output if (tp->t_local<OSTOP) */
-"SIGIO", /* 23 input/output possible signal */
-"SIGXCPU", /* 24 exceeded CPU time limit */
-"SIGXFSZ", /* 25 exceeded file size limit */
-"SIGVTALRM",/* 26 virtual time alarm */
-"SIGPROF", /* 27 profiling time alarm */
-"","","","" };
-
-#else BSD /* for system V? */
-
-static char *signame[NSIG] = { "",
-"SIGHUP", /* 1 hangup */
-"SIGINT", /* 2 interrupt */
-"SIGQUIT", /* 3 quit */
-"SIGILL", /* 4 illegal instruction (not reset when caught) */
-"SIGTRAP", /* 5 trace trap (not reset when caught) */
-"SIGIOT", /* 6 IOT instruction */
-"SIGEMT", /* 7 EMT instruction */
-"SIGFPE", /* 8 floating point exception */
-"SIGKILL", /* 9 kill (cannot be caught or ignored) */
-"SIGBUS", /* 10 bus error */
-"SIGSEGV", /* 11 segmentation violation */
-"SIGSYS", /* 12 bad argument to system call */
-"SIGPIPE", /* 13 write on a pipe with no one to read it */
-"SIGALRM", /* 14 alarm clock */
-"SIGTERM", /* 15 software termination signal from kill */
-"SIGUSR1", /* 16 user defines signal 1 */
-"SIGUSR2", /* 17 user defines signal 2 */
-"SIGCLD", /* 18 child death */
-"SIGPWR", /* 19 power fail */
-"","","","","","","","","","","","" };
-
-#endif BSD
+ signal(SIGTSTP, tstop);
+ signal(SIGSTOP, tstop);
+#endif /* SIGTSTP */
+}
/*
* routine to process a fatal error signal
*/
static void
sigpanic(sig)
- int sig;
- {
- char buf[128];
- signal(sig,SIG_DFL);
- sprintf(buf,"\nLarn - Panic! Signal %d received [%s]",sig,signame[sig]);
- write(2,buf,strlen(buf)); sleep(2);
+ int sig;
+{
+ char buf[128];
+ signal(sig, SIG_DFL);
+ snprintf(buf, sizeof(buf),
+ "\nLarn - Panic! Signal %d received [SIG%s]", sig,
+ sys_signame[sig]);
+ write(2, buf, strlen(buf));
+ sleep(2);
sncbr();
- savegame(savefilename);
- kill(getpid(),sig); /* this will terminate us */
- }
+ savegame(savefilename);
+ kill(getpid(), sig); /* this will terminate us */
+}
git.ckatri.com / bsdgames-darwin.git / blobdiff