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  * @requires os.family != "windows"
  28  * @library /test/lib
  29  * @run main RemovingUnixDomainSocketTest
  30  */
  31 
  32 import java.io.IOException;
  33 import java.nio.file.Path;
  34 
  35 import jdk.test.lib.apps.LingeredApp;
  36 import jdk.test.lib.JDKToolLauncher;
  37 import jdk.test.lib.process.OutputAnalyzer;
  38 
  39 public class RemovingUnixDomainSocketTest {
  40 
  41     private static void runJCmd(long pid) throws InterruptedException, IOException {
  42         JDKToolLauncher jcmd = JDKToolLauncher.createUsingTestJDK("jcmd");
  43         jcmd.addToolArg(Long.toString(pid));
  44         jcmd.addToolArg("VM.version");
  45 
  46         ProcessBuilder pb = new ProcessBuilder(jcmd.getCommand());
  47         Process jcmdProc = pb.start();
  48 
  49         OutputAnalyzer out = new OutputAnalyzer(jcmdProc);
  50 
  51         jcmdProc.waitFor();
  52 
  53         System.out.println(out.getStdout());
  54         System.err.println(out.getStderr());
  55 
  56         out.stderrShouldBeEmpty();
  57     }
  58 
  59     public static void main(String... args) throws Exception {
  60         LingeredApp app = null;
  61         try {
  62             app = LingeredApp.startApp();
  63 
  64             // Access to Attach Listener
  65             runJCmd(app.getPid());
  66 
  67             // Remove unix domain socket file
  68             var sockFile = Path.of(System.getProperty("java.io.tmpdir"),
  69                                    ".java_pid" + app.getPid())
  70                                .toFile();
  71             System.out.println("Remove " + sockFile.toString());
  72             sockFile.delete();
  73 
  74             // Access to Attach Listener again
  75             runJCmd(app.getPid());
  76         } finally {
  77             LingeredApp.stopApp(app);
  78         }
  79     }
  80 
  81 }