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 } 136