games/sail/pl_1.c

   1 /*
   2  * Copyright (c) 1983, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#)pl_1.c   8.1 (Berkeley) 5/31/93
  34  * $FreeBSD: src/games/sail/pl_1.c,v 1.2 1999/11/30 03:49:36 billf Exp $
  35  * $DragonFly: src/games/sail/pl_1.c,v 1.4 2006/09/03 17:33:13 pavalos Exp $
  36  */
  37
  38 #include "player.h"
  39 #include <sys/types.h>
  40 #include <sys/wait.h>
  41
  42 /*
  43  * If we get here before a ship is chosen, then ms == 0 and
  44  * we don't want to update the score file, or do any Write's either.
  45  * We can assume the sync file is already created and may need
  46  * to be removed.
  47  * Of course, we don't do any more Sync()'s if we got here
  48  * because of a Sync() failure.
  49  */
  50 void
  51 leave(int conditions)
  52 {
  53         signal(SIGHUP, SIG_IGN);
  54         signal(SIGINT, SIG_IGN);
  55         signal(SIGQUIT, SIG_IGN);
  56         signal(SIGALRM, SIG_IGN);
  57         signal(SIGCHLD, SIG_IGN);
  58
  59         if (done_curses) {
  60                 Signal("It looks like you've had it!",
  61                         (struct ship *)0);
  62                 switch (conditions) {
  63                 case LEAVE_QUIT:
  64                         break;
  65                 case LEAVE_CAPTURED:
  66                         Signal("Your ship was captured.",
  67                                 (struct ship *)0);
  68                         break;
  69                 case LEAVE_HURRICAN:
  70                         Signal("Hurricane!  All ships destroyed.",
  71                                 (struct ship *)0);
  72                         break;
  73                 case LEAVE_DRIVER:
  74                         Signal("The driver died.", (struct ship *)0);
  75                         break;
  76                 case LEAVE_SYNC:
  77                         Signal("Synchronization error.", (struct ship *)0);
  78                         break;
  79                 default:
  80                         Signal("A funny thing happened (%d).",
  81                                 (struct ship *)0, conditions);
  82                 }
  83         } else {
  84                 switch (conditions) {
  85                 case LEAVE_QUIT:
  86                         break;
  87                 case LEAVE_DRIVER:
  88                         printf("The driver died.\n");
  89                         break;
  90                 case LEAVE_FORK:
  91                         perror("fork");
  92                         break;
  93                 case LEAVE_SYNC:
  94                         printf("Synchronization error\n.");
  95                         break;
  96                 default:
  97                         printf("A funny thing happened (%d).\n",
  98                                 conditions);
  99                 }
 100         }
 101
 102         if (ms != 0) {
 103                 write_log(ms);
 104                 if (conditions != LEAVE_SYNC) {
 105                         makesignal(ms, "Captain %s relinquishing.",
 106                                 (struct ship *)0, mf->captain);
 107                         Write(W_END, ms, 0, 0, 0, 0, 0);
 108                         Sync();
 109                 }
 110         }
 111         sync_close(!hasdriver);
 112         cleanupscreen();
 113         exit(0);
 114 }
 115
 116 void
 117 choke(void)
 118 {
 119         leave(LEAVE_QUIT);
 120 }
 121
 122 void
 123 child(void)
 124 {
 125         union wait status;
 126         int pid;
 127
 128         signal(SIGCHLD, SIG_IGN);
 129         do {
 130                 pid = wait3((int *)&status, WNOHANG, (struct rusage *)0);
 131                 if (pid < 0 || (pid > 0 && !WIFSTOPPED(status)))
 132                         hasdriver = 0;
 133         } while (pid > 0);
 134         signal(SIGCHLD, (sig_t)child);
 135 }