1 /* $OpenBSD: pl_1.c,v 1.13 2019/06/28 13:32:52 deraadt Exp $ */ 2 /* $NetBSD: pl_1.c,v 1.3 1995/04/22 10:37:07 cgd Exp $ */ 3 4 /* 5 * Copyright (c) 1983, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/wait.h> 34 35 #include <errno.h> 36 #include <signal.h> 37 #include <stdlib.h> 38 #include <unistd.h> 39 40 #include "extern.h" 41 #include "player.h" 42 43 #ifndef __GNUC__ 44 #define __attribute__(x) 45 #endif 46 47 /* 48 * If we get here before a ship is chosen, then ms == 0 and 49 * we don't want to update the score file, or do any Write's either. 50 * We can assume the sync file is already created and may need 51 * to be removed. 52 * Of course, we don't do any more Sync()'s if we got here 53 * because of a Sync() failure. 54 */ 55 void 56 leave(int conditions) 57 { 58 (void) signal(SIGHUP, SIG_IGN); 59 (void) signal(SIGINT, SIG_IGN); 60 (void) signal(SIGQUIT, SIG_IGN); 61 (void) signal(SIGALRM, SIG_IGN); 62 (void) signal(SIGCHLD, SIG_DFL); 63 64 if (done_curses) { 65 Msg("It looks like you've had it!"); 66 switch (conditions) { 67 case LEAVE_QUIT: 68 break; 69 case LEAVE_CAPTURED: 70 Msg("Your ship was captured."); 71 break; 72 case LEAVE_HURRICAN: 73 Msg("Hurricane! All ships destroyed."); 74 break; 75 case LEAVE_DRIVER: 76 Msg("The driver died."); 77 break; 78 case LEAVE_SYNC: 79 Msg("Synchronization error."); 80 break; 81 default: 82 Msg("A funny thing happened (%d).", conditions); 83 } 84 } else { 85 switch (conditions) { 86 case LEAVE_QUIT: 87 break; 88 case LEAVE_DRIVER: 89 printf("The driver died.\n"); 90 break; 91 case LEAVE_FORK: 92 perror("fork"); 93 break; 94 case LEAVE_SYNC: 95 printf("Synchronization error\n."); 96 break; 97 default: 98 printf("A funny thing happened (%d).\n", 99 conditions); 100 } 101 } 102 103 if (ms != 0) { 104 logger(ms); 105 if (conditions != LEAVE_SYNC) { 106 makemsg(ms, "Captain %s relinquishing.", 107 mf->captain); 108 Write(W_END, ms, 0, 0, 0, 0); 109 (void) Sync(); 110 } 111 } 112 sync_close(!hasdriver); 113 sleep(5); 114 cleanupscreen(); 115 exit(0); 116 } 117 118 void 119 choke(int n __attribute__((unused))) 120 { 121 leave(LEAVE_QUIT); 122 } 123 124 void 125 child(int n __attribute__((unused))) 126 { 127 int status; 128 int pid; 129 int save_errno = errno; 130 131 (void) signal(SIGCHLD, SIG_DFL); 132 do { 133 pid = waitpid((pid_t)-1, &status, WNOHANG); 134 if (pid == -1 || (pid > 0 && !WIFSTOPPED(status))) 135 hasdriver = 0; 136 } while (pid > 0); 137 (void) signal(SIGCHLD, child); 138 errno = save_errno; 139 } 140