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      1 /*	$NetBSD: pl_1.c,v 1.21 2009/03/14 22:52:52 dholland Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1983, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)pl_1.c	8.1 (Berkeley) 5/31/93";
     36 #else
     37 __RCSID("$NetBSD: pl_1.c,v 1.21 2009/03/14 22:52:52 dholland Exp $");
     38 #endif
     39 #endif /* not lint */
     40 
     41 #include <sys/types.h>
     42 #include <sys/wait.h>
     43 #include <signal.h>
     44 #include <stdio.h>
     45 #include <stdlib.h>
     46 #include <unistd.h>
     47 #include "extern.h"
     48 #include "player.h"
     49 
     50 /*
     51  * If we get here before a ship is chosen, then ms == 0 and
     52  * we don't want to update the score file, or do any Write's either.
     53  * We can assume the sync file is already created and may need
     54  * to be removed.
     55  * Of course, we don't do any more Sync()'s if we got here
     56  * because of a Sync() failure.
     57  */
     58 void
     59 leave(int conditions)
     60 {
     61 	signal(SIGHUP, SIG_IGN);
     62 	signal(SIGINT, SIG_IGN);
     63 	signal(SIGQUIT, SIG_IGN);
     64 	signal(SIGALRM, SIG_IGN);
     65 	signal(SIGCHLD, SIG_IGN);
     66 
     67 	if (done_curses) {
     68 		Msg("It looks like you've had it!");
     69 		switch (conditions) {
     70 		case LEAVE_QUIT:
     71 			break;
     72 		case LEAVE_CAPTURED:
     73 			Msg("Your ship was captured.");
     74 			break;
     75 		case LEAVE_HURRICAN:
     76 			Msg("Hurricane!  All ships destroyed.");
     77 			break;
     78 		case LEAVE_DRIVER:
     79 			Msg("The driver died.");
     80 			break;
     81 		case LEAVE_SYNC:
     82 			Msg("Synchronization error.");
     83 			break;
     84 		default:
     85 			Msg("A funny thing happened (%d).", conditions);
     86 		}
     87 	} else {
     88 		switch (conditions) {
     89 		case LEAVE_QUIT:
     90 			break;
     91 		case LEAVE_DRIVER:
     92 			printf("The driver died.\n");
     93 			break;
     94 		case LEAVE_FORK:
     95 			break;
     96 		case LEAVE_SYNC:
     97 			printf("Synchronization error\n.");
     98 			break;
     99 		default:
    100 			printf("A funny thing happened (%d).\n",
    101 				conditions);
    102 		}
    103 	}
    104 
    105 	if (ms != 0) {
    106 		logger(ms);
    107 		if (conditions != LEAVE_SYNC) {
    108 			makemsg(ms, "Captain %s relinquishing.",
    109 				mf->captain);
    110 			send_end(ms);
    111 			Sync();
    112 		}
    113 	}
    114 	sync_close(!hasdriver);
    115 	sleep(5);
    116 	cleanupscreen();
    117 	exit(0);
    118 }
    119 
    120 /*ARGSUSED*/
    121 void
    122 choke(int n __unused)
    123 {
    124 	leave(LEAVE_QUIT);
    125 }
    126 
    127 /*ARGSUSED*/
    128 void
    129 child(int n __unused)
    130 {
    131 	int status;
    132 	int pid;
    133 
    134 	signal(SIGCHLD, SIG_IGN);
    135 	do {
    136 		pid = wait3(&status, WNOHANG, (struct rusage *)0);
    137 		if (pid < 0 || (pid > 0 && !WIFSTOPPED(status)))
    138 			hasdriver = 0;
    139 	} while (pid > 0);
    140 	signal(SIGCHLD, child);
    141 }
    142