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  * $DragonFly: src/games/sail/pl_1.c,v 1.4 2006/09/03 17:33:13 pavalos Exp $
  32  */
  33
  34 #include <sys/types.h>
  35 #include <sys/wait.h>
  36 #include "player.h"
  37
  38 /*
  39  * If we get here before a ship is chosen, then ms == 0 and
  40  * we don't want to update the score file, or do any Write's either.
  41  * We can assume the sync file is already created and may need
  42  * to be removed.
  43  * Of course, we don't do any more Sync()'s if we got here
  44  * because of a Sync() failure.
  45  */
  46 void
  47 leave(int conditions)
  48 {
  49         signal(SIGHUP, SIG_IGN);
  50         signal(SIGINT, SIG_IGN);
  51         signal(SIGQUIT, SIG_IGN);
  52         signal(SIGALRM, SIG_IGN);
  53         signal(SIGCHLD, SIG_IGN);
  54
  55         if (done_curses) {
  56                 Signal("It looks like you've had it!",
  57                         NULL);
  58                 switch (conditions) {
  59                 case LEAVE_QUIT:
  60                         break;
  61                 case LEAVE_CAPTURED:
  62                         Signal("Your ship was captured.",
  63                                 NULL);
  64                         break;
  65                 case LEAVE_HURRICAN:
  66                         Signal("Hurricane!  All ships destroyed.",
  67                                 NULL);
  68                         break;
  69                 case LEAVE_DRIVER:
  70                         Signal("The driver died.", NULL);
  71                         break;
  72                 case LEAVE_SYNC:
  73                         Signal("Synchronization error.", NULL);
  74                         break;
  75                 default:
  76                         Signal("A funny thing happened (%d).",
  77                                 NULL, conditions);
  78                 }
  79         } else {
  80                 switch (conditions) {
  81                 case LEAVE_QUIT:
  82                         break;
  83                 case LEAVE_DRIVER:
  84                         printf("The driver died.\n");
  85                         break;
  86                 case LEAVE_FORK:
  87                         perror("fork");
  88                         break;
  89                 case LEAVE_SYNC:
  90                         printf("Synchronization error\n.");
  91                         break;
  92                 default:
  93                         printf("A funny thing happened (%d).\n",
  94                                 conditions);
  95                 }
  96         }
  97
  98         if (ms != 0) {
  99                 write_log(ms);
 100                 if (conditions != LEAVE_SYNC) {
 101                         makesignal(ms, "Captain %s relinquishing.",
 102                                 NULL, mf->captain);
 103                         Write(W_END, ms, 0, 0, 0, 0);
 104                         Sync();
 105                 }
 106         }
 107         sync_close(!hasdriver);
 108         cleanupscreen();
 109         exit(0);
 110 }
 111
 112 void
 113 choke(void)
 114 {
 115         leave(LEAVE_QUIT);
 116 }
 117
 118 void
 119 child(void)
 120 {
 121         union wait status;
 122         int pid;
 123
 124         signal(SIGCHLD, SIG_IGN);
 125         do {
 126                 pid = wait3((int *)&status, WNOHANG, NULL);
 127                 if (pid < 0 || (pid > 0 && !WIFSTOPPED(status)))
 128                         hasdriver = 0;
 129         } while (pid > 0);
 130         signal(SIGCHLD, (sig_t)child);
 131 }