1 /*
   2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8225193
  27  * @library /test/lib
  28  * @run main RemovingUnixDomainSocketTest
  29  */
  30 
  31 import java.io.IOException;
  32 import java.nio.file.Path;
  33 
  34 import jdk.test.lib.apps.LingeredApp;
  35 import jdk.test.lib.JDKToolLauncher;
  36 import jdk.test.lib.process.OutputAnalyzer;
  37 
  38 public class RemovingUnixDomainSocketTest {
  39 
  40     private static void runJCmd(long pid) throws InterruptedException, IOException {
  41         JDKToolLauncher jcmd = JDKToolLauncher.createUsingTestJDK("jcmd");
  42         jcmd.addToolArg(Long.toString(pid));
  43         jcmd.addToolArg("VM.version");
  44 
  45         ProcessBuilder pb = new ProcessBuilder(jcmd.getCommand());
  46         Process jcmdProc = pb.start();
  47 
  48         OutputAnalyzer out = new OutputAnalyzer(jcmdProc);
  49 
  50         jcmdProc.waitFor();
  51 
  52         System.out.println(out.getStdout());
  53         System.err.println(out.getStderr());
  54 
  55         out.stderrShouldBeEmpty();
  56     }
  57 
  58     public static void main(String... args) throws Exception {
  59         LingeredApp app = null;
  60         try {
  61             app = LingeredApp.startApp();
  62 
  63             // Access to Attach Listener
  64             runJCmd(app.getPid());
  65 
  66             // Remove unix domain socket file
  67             var sockFile = Path.of(System.getProperty("java.io.tmpdir"),
  68                                    ".java_pid" + app.getPid())
  69                                .toFile();
  70             System.out.println("Remove " + sockFile.toString());
  71             sockFile.delete();
  72 
  73             // Access to Attach Listener again
  74             runJCmd(app.getPid());
  75         } finally {
  76             LingeredApp.stopApp(app);
  77         }
  78     }
  79 
  80 }