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