| /* |
| * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * A test for |
| * 6469606: (process) Process.destroy() can kill wrong process (Unix) |
| * that is not suitable for use as a regression test, because it must |
| * create 32768 processes, and depends on perl. |
| */ |
| import java.io.*; |
| |
| public class FeelingLucky { |
| |
| public static void main(String[] args) throws Throwable { |
| final Runtime rt = Runtime.getRuntime(); |
| final String[] pidPrinter = {"/bin/sh", "-c", "echo $$"}; |
| final Process minedProcess = rt.exec(pidPrinter); |
| int minedPid = 0; |
| final InputStream is = minedProcess.getInputStream(); |
| int c; |
| while ((c = is.read()) >= '0' && c <= '9') |
| minedPid = 10 * minedPid + (c - '0'); |
| System.out.printf("minedPid=%d%n", minedPid); |
| minedProcess.waitFor(); |
| |
| final String[] magnum = { |
| "perl", "-e", |
| "my $punk = getppid();" + |
| "open TTY, '> /dev/tty';" + |
| "print TTY \"punk=$punk\\n\";" + |
| "for (my $i = 0; $i < 32768; $i++) {" + |
| " my $pid = fork();" + |
| " if ($pid == 0) {" + |
| " if ($$ == " + minedPid + ") {" + |
| " print TTY \"MATCH $$ $punk\\n\";" + |
| " $SIG{TERM} = sub {" + |
| " print TTY \"Got TERM $$ $punk\\n\";" + |
| " kill 9, $punk;" + |
| " exit; };" + |
| " $| = 1; print 'Go ahead. Make my day.';" + |
| " sleep 100;" + |
| " }" + |
| " exit;" + |
| " } else { " + |
| " waitpid($pid,0);" + |
| " break if $pid == " + minedPid + ";" + |
| " }" + |
| "}" |
| }; |
| |
| Process p = rt.exec(magnum); |
| if (p.getInputStream().read() != -1) { |
| System.out.println("got a char"); |
| minedProcess.destroy(); |
| Thread.sleep(1000); |
| } |
| } |
| } |