sail/pl_1.c

   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 }