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pl_1.c revision 1.3 
      1 /*	$NetBSD: pl_1.c,v 1.3 1995/04/22 10:37:07 cgd 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 #ifndef lint
     37 #if 0
     38 static char sccsid[] = "@(#)pl_1.c	8.1 (Berkeley) 5/31/93";
     39 #else
     40 static char rcsid[] = "$NetBSD: pl_1.c,v 1.3 1995/04/22 10:37:07 cgd Exp $";
     41 #endif
     42 #endif /* not lint */
     43 
     44 #include "player.h"
     45 #include <sys/types.h>
     46 #include <sys/wait.h>
     47 
     48 /*
     49  * If we get here before a ship is chosen, then ms == 0 and
     50  * we don't want to update the score file, or do any Write's either.
     51  * We can assume the sync file is already created and may need
     52  * to be removed.
     53  * Of course, we don't do any more Sync()'s if we got here
     54  * because of a Sync() failure.
     55  */
     56 leave(conditions)
     57 int conditions;
     58 {
     59 	(void) signal(SIGHUP, SIG_IGN);
     60 	(void) signal(SIGINT, SIG_IGN);
     61 	(void) signal(SIGQUIT, SIG_IGN);
     62 	(void) signal(SIGALRM, SIG_IGN);
     63 	(void) signal(SIGCHLD, SIG_IGN);
     64 
     65 	if (done_curses) {
     66 		Signal("It looks like you've had it!",
     67 			(struct ship *)0);
     68 		switch (conditions) {
     69 		case LEAVE_QUIT:
     70 			break;
     71 		case LEAVE_CAPTURED:
     72 			Signal("Your ship was captured.",
     73 				(struct ship *)0);
     74 			break;
     75 		case LEAVE_HURRICAN:
     76 			Signal("Hurricane!  All ships destroyed.",
     77 				(struct ship *)0);
     78 			break;
     79 		case LEAVE_DRIVER:
     80 			Signal("The driver died.", (struct ship *)0);
     81 			break;
     82 		case LEAVE_SYNC:
     83 			Signal("Synchronization error.", (struct ship *)0);
     84 			break;
     85 		default:
     86 			Signal("A funny thing happened (%d).",
     87 				(struct ship *)0, conditions);
     88 		}
     89 	} else {
     90 		switch (conditions) {
     91 		case LEAVE_QUIT:
     92 			break;
     93 		case LEAVE_DRIVER:
     94 			printf("The driver died.\n");
     95 			break;
     96 		case LEAVE_FORK:
     97 			perror("fork");
     98 			break;
     99 		case LEAVE_SYNC:
    100 			printf("Synchronization error\n.");
    101 			break;
    102 		default:
    103 			printf("A funny thing happened (%d).\n",
    104 				conditions);
    105 		}
    106 	}
    107 
    108 	if (ms != 0) {
    109 		log(ms);
    110 		if (conditions != LEAVE_SYNC) {
    111 			makesignal(ms, "Captain %s relinquishing.",
    112 				(struct ship *)0, mf->captain);
    113 			Write(W_END, ms, 0, 0, 0, 0, 0);
    114 			(void) Sync();
    115 		}
    116 	}
    117 	sync_close(!hasdriver);
    118 	cleanupscreen();
    119 	exit(0);
    120 }
    121 
    122 void
    123 choke()
    124 {
    125 	leave(LEAVE_QUIT);
    126 }
    127 
    128 void
    129 child()
    130 {
    131 	union wait status;
    132 	int pid;
    133 
    134 	(void) signal(SIGCHLD, SIG_IGN);
    135 	do {
    136 		pid = wait3((int *)&status, WNOHANG, (struct rusage *)0);
    137 		if (pid < 0 || pid > 0 && !WIFSTOPPED(status))
    138 			hasdriver = 0;
    139 	} while (pid > 0);
    140 	(void) signal(SIGCHLD, child);
    141 }
    142