1 /*

     2  * Copyright (c) 2018, 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 /*

    26  * @test

    27  * @summary Test that CDS still works when the JDK is moved to a new directory

    28  * @requires vm.cds

    29  * @requires os.family == "linux"

    30  * @library /test/lib

    31  * @modules java.base/jdk.internal.misc

    32  *          java.management

    33  *          jdk.jartool/sun.tools.jar

    34  * @compile test-classes/Hello.java

    35  * @run driver MoveJDKTest

    36  */

    37 

    38 // This test works only on Linux because it depends on symlinks and the name of the hotspot DLL (libjvm.so).

    39 // It probably doesn't work on Windows.

    40 // TODO: change libjvm.so to libjvm.dylib on MacOS, before adding "@requires os.family == mac"

    41 // TODO: test on solaris, before adding "@requires os.family == solaris"

    42 

    43 import java.io.File;

    44 import java.nio.file.Files;

    45 import java.nio.file.Path;

    46 import java.nio.file.Paths;

    47 import java.nio.file.StandardCopyOption;

    48 import jdk.test.lib.process.OutputAnalyzer;

    49 

    50 public class MoveJDKTest {

    51     public static void main(String[] args) throws Exception {

    52         String java_home_src = System.getProperty("java.home");

    53         String java_home_dst = System.getProperty("user.dir") + File.separator + "moved_jdk";

    54 

    55         TestCommon.startNewArchiveName();

    56         String jsaFile = TestCommon.getCurrentArchiveName();

    57         String jsaOpt = "-XX:SharedArchiveFile=" + jsaFile;

    58         {

    59             ProcessBuilder pb = makeBuilder(java_home_src + "/bin/java", "-Xshare:dump", jsaOpt);

    60             TestCommon.executeAndLog(pb, "dump");

    61         }

    62         {

    63             ProcessBuilder pb = makeBuilder(java_home_src + "/bin/java",

    64                                             "-Xshare:auto",

    65                                             jsaOpt,

    66                                             "-Xlog:class+path=info",

    67                                             "-version");

    68             OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-src");

    69             out.shouldNotContain("shared class paths mismatch");

    70             out.shouldNotContain("BOOT classpath mismatch");

    71         }

    72 

    73         clone(new File(java_home_src), new File(java_home_dst));

    74         System.out.println("============== Cloned JDK at " + java_home_dst);

    75 

    76         // Test runtime with cloned JDK

    77         {

    78             ProcessBuilder pb = makeBuilder(java_home_dst + "/bin/java",

    79                                             "-Xshare:auto",

    80                                             jsaOpt,

    81                                             "-Xlog:class+path=info",

    82                                             "-version");

    83             OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-dst");

    84             out.shouldNotContain("shared class paths mismatch");

    85             out.shouldNotContain("BOOT classpath mismatch");

    86         }

    87 

    88         // Test with bad JAR file name, hello.modules

    89         String helloJar = JarBuilder.getOrCreateHelloJar();

    90         String fake_modules = copyFakeModulesFromHelloJar();

    91         String dumptimeBootAppendOpt = "-Xbootclasspath/a:" + fake_modules;

    92         {

    93             ProcessBuilder pb = makeBuilder(java_home_src + "/bin/java",

    94                                             "-Xshare:dump",

    95                                             dumptimeBootAppendOpt,

    96                                             jsaOpt);

    97             TestCommon.executeAndLog(pb, "dump");

    98         }

    99         {

   100             String runtimeBootAppendOpt = dumptimeBootAppendOpt + System.getProperty("path.separator") + helloJar;

   101             ProcessBuilder pb = makeBuilder(java_home_dst + "/bin/java",

   102                                             "-Xshare:auto",

   103                                             runtimeBootAppendOpt,

   104                                             jsaOpt,

   105                                             "-Xlog:class+path=info",

   106                                             "-version");

   107             OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-dst");

   108             out.shouldNotContain("shared class paths mismatch");

   109             out.shouldNotContain("BOOT classpath mismatch");

   110         }

   111 

   112         // Test with no modules image in the <java home>/lib directory

   113         renameModulesFile(java_home_dst);

   114         {

   115             ProcessBuilder pb = makeBuilder(java_home_dst + "/bin/java",

   116                                             "-version");

   117             OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-missing-modules");

   118             out.shouldHaveExitValue(1);

   119             out.shouldContain("Failed setting boot class path.");

   120         }

   121     }

   122 

   123     // Do a cheap clone of the JDK. Most files can be sym-linked. However, $JAVA_HOME/bin/java and $JAVA_HOME/lib/.../libjvm.so"

   124     // must be copied, because the java.home property is derived from the canonicalized paths of these 2 files.

   125     static void clone(File src, File dst) throws Exception {

   126         if (dst.exists()) {

   127             if (!dst.isDirectory()) {

   128                 throw new RuntimeException("Not a directory :" + dst);

   129             }

   130         } else {

   131             if (!dst.mkdir()) {

   132                 throw new RuntimeException("Cannot create directory: " + dst);

   133             }

   134         }

   135         for (String child : src.list()) {

   136             if (child.equals(".") || child.equals("..")) {

   137                 continue;

   138             }

   139 

   140             File child_src = new File(src, child);

   141             File child_dst = new File(dst, child);

   142             if (child_dst.exists()) {

   143                 throw new RuntimeException("Already exists: " + child_dst);

   144             }

   145             if (child_src.isFile()) {

   146                 if (child.equals("libjvm.so") || child.equals("java")) {

   147                     Files.copy(child_src.toPath(), /* copy data to -> */ child_dst.toPath());

   148                 } else {

   149                     Files.createSymbolicLink(child_dst.toPath(),  /* link to -> */ child_src.toPath());

   150                 }

   151             } else {

   152                 clone(child_src, child_dst);

   153             }

   154         }

   155     }

   156 

   157     static void renameModulesFile(String javaHome) throws Exception {

   158         String modulesDir = javaHome + File.separator + "lib";

   159         File origModules = new File(modulesDir, "modules");

   160         if (!origModules.exists()) {

   161             throw new RuntimeException("modules file not found");

   162         }

   163 

   164         File renamedModules = new File(modulesDir, "orig_modules");

   165         if (renamedModules.exists()) {

   166             throw new RuntimeException("found orig_modules unexpectedly");

   167         }

   168 

   169         boolean success = origModules.renameTo(renamedModules);

   170         if (!success) {

   171             throw new RuntimeException("rename modules file failed");

   172         }

   173     }

   174 

   175     static ProcessBuilder makeBuilder(String... args) throws Exception {

   176         System.out.print("[");

   177         for (String s : args) {

   178             System.out.print(" " + s);

   179         }

   180         System.out.println(" ]");

   181         return new ProcessBuilder(args);

   182     }

   183 

   184     private static String copyFakeModulesFromHelloJar() throws Exception {

   185         String classDir = System.getProperty("test.classes");

   186         String newFile = "hello.modules";

   187         String path = classDir + File.separator + newFile;

   188 

   189         Files.copy(Paths.get(classDir, "hello.jar"),

   190             Paths.get(classDir, newFile),

   191             StandardCopyOption.REPLACE_EXISTING);

   192         return path;

   193     }

   194 }