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pl_1.c revision 1.4 
      1 /*	$NetBSD: pl_1.c,v 1.4 1997/10/13 19:44:53 christos 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)pl_1.c	8.1 (Berkeley) 5/31/93";
     40 #else
     41 __RCSID("$NetBSD: pl_1.c,v 1.4 1997/10/13 19:44:53 christos Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include "player.h"
     46 #include <sys/types.h>
     47 #include <sys/wait.h>
     48 
     49 /*
     50  * If we get here before a ship is chosen, then ms == 0 and
     51  * we don't want to update the score file, or do any Write's either.
     52  * We can assume the sync file is already created and may need
     53  * to be removed.
     54  * Of course, we don't do any more Sync()'s if we got here
     55  * because of a Sync() failure.
     56  */
     57 void
     58 leave(conditions)
     59 int conditions;
     60 {
     61 	(void) signal(SIGHUP, SIG_IGN);
     62 	(void) signal(SIGINT, SIG_IGN);
     63 	(void) signal(SIGQUIT, SIG_IGN);
     64 	(void) signal(SIGALRM, SIG_IGN);
     65 	(void) 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 			perror("fork");
     96 			break;
     97 		case LEAVE_SYNC:
     98 			printf("Synchronization error\n.");
     99 			break;
    100 		default:
    101 			printf("A funny thing happened (%d).\n",
    102 				conditions);
    103 		}
    104 	}
    105 
    106 	if (ms != 0) {
    107 		logger(ms);
    108 		if (conditions != LEAVE_SYNC) {
    109 			makesignal(ms, "Captain %s relinquishing.",
    110 				(struct ship *)0, mf->captain);
    111 			Write(W_END, ms, 0, 0, 0, 0, 0);
    112 			(void) Sync();
    113 		}
    114 	}
    115 	sync_close(!hasdriver);
    116 	cleanupscreen();
    117 	exit(0);
    118 }
    119 
    120 /*ARGSUSED*/
    121 void
    122 choke(n)
    123 	int n;
    124 {
    125 	leave(LEAVE_QUIT);
    126 }
    127 
    128 /*ARGSUSED*/
    129 void
    130 child(n)
    131 	int n;
    132 {
    133 	union wait status;
    134 	int pid;
    135 
    136 	(void) signal(SIGCHLD, SIG_IGN);
    137 	do {
    138 		pid = wait3((int *)&status, WNOHANG, (struct rusage *)0);
    139 		if (pid < 0 || (pid > 0 && !WIFSTOPPED(status)))
    140 			hasdriver = 0;
    141 	} while (pid > 0);
    142 	(void) signal(SIGCHLD, child);
    143 }
    144