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 } 132