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 * @compile test-classes/Hello.java 32 * @run driver MoveJDKTest 33 */ 34 35 // This test works only on Linux because it depends on symlinks and the name of the hotspot DLL (libjvm.so). 36 // It probably doesn't work on Windows. 37 // TODO: change libjvm.so to libjvm.dylib on MacOS, before adding "@requires os.family == mac" 38 // TODO: test on solaris, before adding "@requires os.family == solaris" 39 40 import java.io.File; 41 import java.nio.file.Files; 42 import java.nio.file.Path; 43 import java.nio.file.Paths; 44 import java.nio.file.StandardCopyOption; 45 import jdk.test.lib.process.OutputAnalyzer; 46 47 public class MoveJDKTest { 48 public static void main(String[] args) throws Exception { 49 String java_home_src = System.getProperty("java.home"); 50 String java_home_dst = System.getProperty("user.dir") + File.separator + "moved_jdk"; 51 52 TestCommon.startNewArchiveName(); 53 String jsaFile = TestCommon.getCurrentArchiveName(); 54 String jsaOpt = "-XX:SharedArchiveFile=" + jsaFile; 55 { 56 ProcessBuilder pb = makeBuilder(java_home_src + "/bin/java", "-Xshare:dump", jsaOpt); 57 TestCommon.executeAndLog(pb, "dump"); 58 } 59 { 60 ProcessBuilder pb = makeBuilder(java_home_src + "/bin/java", 61 "-Xshare:auto", 62 jsaOpt, 63 "-Xlog:class+path=info", 64 "-version"); 65 OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-src"); 66 out.shouldNotContain("shared class paths mismatch"); 67 out.shouldNotContain("BOOT classpath mismatch"); 68 } 69 70 clone(new File(java_home_src), new File(java_home_dst)); 71 System.out.println("============== Cloned JDK at " + java_home_dst); 72 73 // Test runtime with cloned JDK 74 { 75 ProcessBuilder pb = makeBuilder(java_home_dst + "/bin/java", 76 "-Xshare:auto", 77 jsaOpt, 78 "-Xlog:class+path=info", 79 "-version"); 80 OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-dst"); 81 out.shouldNotContain("shared class paths mismatch"); 82 out.shouldNotContain("BOOT classpath mismatch"); 83 } 84 85 // Test with bad JAR file name, hello.modules 86 String helloJar = JarBuilder.getOrCreateHelloJar(); 87 String fake_modules = copyFakeModulesFromHelloJar(); 88 String dumptimeBootAppendOpt = "-Xbootclasspath/a:" + fake_modules; 89 { 90 ProcessBuilder pb = makeBuilder(java_home_src + "/bin/java", 91 "-Xshare:dump", 92 dumptimeBootAppendOpt, 93 jsaOpt); 94 TestCommon.executeAndLog(pb, "dump"); 95 } 96 { 97 String runtimeBootAppendOpt = dumptimeBootAppendOpt + System.getProperty("path.separator") + helloJar; 98 ProcessBuilder pb = makeBuilder(java_home_dst + "/bin/java", 99 "-Xshare:auto", 100 runtimeBootAppendOpt, 101 jsaOpt, 102 "-Xlog:class+path=info", 103 "-version"); 104 OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-dst"); 105 out.shouldNotContain("shared class paths mismatch"); 106 out.shouldNotContain("BOOT classpath mismatch"); 107 } 108 109 // Test with no modules image in the <java home>/lib directory 110 renameModulesFile(java_home_dst); 111 { 112 ProcessBuilder pb = makeBuilder(java_home_dst + "/bin/java", 113 "-version"); 114 OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-missing-modules"); 115 out.shouldHaveExitValue(1); 116 out.shouldContain("Failed setting boot class path."); 117 } 118 } 119 120 // Do a cheap clone of the JDK. Most files can be sym-linked. However, $JAVA_HOME/bin/java and $JAVA_HOME/lib/.../libjvm.so" 121 // must be copied, because the java.home property is derived from the canonicalized paths of these 2 files. 122 static void clone(File src, File dst) throws Exception { 123 if (dst.exists()) { 124 if (!dst.isDirectory()) { 125 throw new RuntimeException("Not a directory :" + dst); 126 } 127 } else { 128 if (!dst.mkdir()) { 129 throw new RuntimeException("Cannot create directory: " + dst); 130 } 131 } 132 for (String child : src.list()) { 133 if (child.equals(".") || child.equals("..")) { 134 continue; 135 } 136 137 File child_src = new File(src, child); 138 File child_dst = new File(dst, child); 139 if (child_dst.exists()) { 140 throw new RuntimeException("Already exists: " + child_dst); 141 } 142 if (child_src.isFile()) { 143 if (child.equals("libjvm.so") || child.equals("java")) { 144 Files.copy(child_src.toPath(), /* copy data to -> */ child_dst.toPath()); 145 } else { 146 Files.createSymbolicLink(child_dst.toPath(), /* link to -> */ child_src.toPath()); 147 } 148 } else { 149 clone(child_src, child_dst); 150 } 151 } 152 } 153 154 static void renameModulesFile(String javaHome) throws Exception { 155 String modulesDir = javaHome + File.separator + "lib"; 156 File origModules = new File(modulesDir, "modules"); 157 if (!origModules.exists()) { 158 throw new RuntimeException("modules file not found"); 159 } 160 161 File renamedModules = new File(modulesDir, "orig_modules"); 162 if (renamedModules.exists()) { 163 throw new RuntimeException("found orig_modules unexpectedly"); 164 } 165 166 boolean success = origModules.renameTo(renamedModules); 167 if (!success) { 168 throw new RuntimeException("rename modules file failed"); 169 } 170 } 171 172 static ProcessBuilder makeBuilder(String... args) throws Exception { 173 System.out.print("["); 174 for (String s : args) { 175 System.out.print(" " + s); 176 } 177 System.out.println(" ]"); 178 return new ProcessBuilder(args); 179 } 180 181 private static String copyFakeModulesFromHelloJar() throws Exception { 182 String classDir = System.getProperty("test.classes"); 183 String newFile = "hello.modules"; 184 String path = classDir + File.separator + newFile; 185 186 Files.copy(Paths.get(classDir, "hello.jar"), 187 Paths.get(classDir, newFile), 188 StandardCopyOption.REPLACE_EXISTING); 189 return path; 190 } 191 }