1 /* $NetBSD: pl_1.c,v 1.21 2009/03/14 22:52:52 dholland 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. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)pl_1.c 8.1 (Berkeley) 5/31/93";
36 #else
37 __RCSID("$NetBSD: pl_1.c,v 1.21 2009/03/14 22:52:52 dholland Exp $");
38 #endif
39 #endif /* not lint */
40
41 #include <sys/types.h>
42 #include <sys/wait.h>
43 #include <signal.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <unistd.h>
47 #include "extern.h"
48 #include "player.h"
49
50 /*
51 * If we get here before a ship is chosen, then ms == 0 and
52 * we don't want to update the score file, or do any Write's either.
53 * We can assume the sync file is already created and may need
54 * to be removed.
55 * Of course, we don't do any more Sync()'s if we got here
56 * because of a Sync() failure.
57 */
58 void
leave(int conditions)59 leave(int conditions)
60 {
61 signal(SIGHUP, SIG_IGN);
62 signal(SIGINT, SIG_IGN);
63 signal(SIGQUIT, SIG_IGN);
64 signal(SIGALRM, SIG_IGN);
65 signal(SIGCHLD, SIG_IGN);
66
67 if (done_curses) {
68 Msg("It looks like you've had it!");
69 switch (conditions) {
70 case LEAVE_QUIT:
71 break;
72 case LEAVE_CAPTURED:
73 Msg("Your ship was captured.");
74 break;
75 case LEAVE_HURRICAN:
76 Msg("Hurricane! All ships destroyed.");
77 break;
78 case LEAVE_DRIVER:
79 Msg("The driver died.");
80 break;
81 case LEAVE_SYNC:
82 Msg("Synchronization error.");
83 break;
84 default:
85 Msg("A funny thing happened (%d).", conditions);
86 }
87 } else {
88 switch (conditions) {
89 case LEAVE_QUIT:
90 break;
91 case LEAVE_DRIVER:
92 printf("The driver died.\n");
93 break;
94 case LEAVE_FORK:
95 break;
96 case LEAVE_SYNC:
97 printf("Synchronization error\n.");
98 break;
99 default:
100 printf("A funny thing happened (%d).\n",
101 conditions);
102 }
103 }
104
105 if (ms != 0) {
106 logger(ms);
107 if (conditions != LEAVE_SYNC) {
108 makemsg(ms, "Captain %s relinquishing.",
109 mf->captain);
110 send_end(ms);
111 Sync();
112 }
113 }
114 sync_close(!hasdriver);
115 sleep(5);
116 cleanupscreen();
117 exit(0);
118 }
119
120 /*ARGSUSED*/
121 void
choke(int n __unused)122 choke(int n __unused)
123 {
124 leave(LEAVE_QUIT);
125 }
126
127 /*ARGSUSED*/
128 void
child(int n __unused)129 child(int n __unused)
130 {
131 int status;
132 int pid;
133
134 signal(SIGCHLD, SIG_IGN);
135 do {
136 pid = wait3(&status, WNOHANG, (struct rusage *)0);
137 if (pid < 0 || (pid > 0 && !WIFSTOPPED(status)))
138 hasdriver = 0;
139 } while (pid > 0);
140 signal(SIGCHLD, child);
141 }
142