1 /*
2 * Copyright (c) 2018, 2020, 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
39 import java.io.File;
40 import java.nio.file.Files;
41 import java.nio.file.Path;
42 import java.nio.file.Paths;
43 import java.nio.file.StandardCopyOption;
44 import jdk.test.lib.process.OutputAnalyzer;
45
46 public class MoveJDKTest {
47 public static void main(String[] args) throws Exception {
48 String java_home_src = System.getProperty("java.home");
49 String java_home_dst = System.getProperty("user.dir") + File.separator + "moved_jdk";
50
51 TestCommon.startNewArchiveName();
52 String jsaFile = TestCommon.getCurrentArchiveName();
53 String jsaOpt = "-XX:SharedArchiveFile=" + jsaFile;
54 {
55 ProcessBuilder pb = makeBuilder(java_home_src + "/bin/java", "-Xshare:dump", jsaOpt);
56 TestCommon.executeAndLog(pb, "dump");
57 }
58 {
59 ProcessBuilder pb = makeBuilder(java_home_src + "/bin/java",
60 "-Xshare:auto",
61 jsaOpt,
62 "-Xlog:class+path=info",
63 "-version");
64 OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-src");
65 out.shouldNotContain("shared class paths mismatch");
66 out.shouldNotContain("BOOT classpath mismatch");
67 }
68
69 clone(new File(java_home_src), new File(java_home_dst));
70 System.out.println("============== Cloned JDK at " + java_home_dst);
71
72 // Test runtime with cloned JDK
73 {
74 ProcessBuilder pb = makeBuilder(java_home_dst + "/bin/java",
75 "-Xshare:auto",
76 jsaOpt,
77 "-Xlog:class+path=info",
78 "-version");
79 OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-dst");
80 out.shouldNotContain("shared class paths mismatch");
81 out.shouldNotContain("BOOT classpath mismatch");
82 }
83
84 // Test with bad JAR file name, hello.modules
85 String helloJar = JarBuilder.getOrCreateHelloJar();
86 String fake_modules = copyFakeModulesFromHelloJar();
87 String dumptimeBootAppendOpt = "-Xbootclasspath/a:" + fake_modules;
88 {
89 ProcessBuilder pb = makeBuilder(java_home_src + "/bin/java",
90 "-Xshare:dump",
91 dumptimeBootAppendOpt,
92 jsaOpt);
93 TestCommon.executeAndLog(pb, "dump");
94 }
95 {
96 String runtimeBootAppendOpt = dumptimeBootAppendOpt + System.getProperty("path.separator") + helloJar;
97 ProcessBuilder pb = makeBuilder(java_home_dst + "/bin/java",
98 "-Xshare:auto",
99 runtimeBootAppendOpt,
100 jsaOpt,
101 "-Xlog:class+path=info",
102 "-version");
103 OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-dst");
104 out.shouldNotContain("shared class paths mismatch");
105 out.shouldNotContain("BOOT classpath mismatch");
106 }
107
108 // Test with no modules image in the <java home>/lib directory
109 renameModulesFile(java_home_dst);
110 {
111 ProcessBuilder pb = makeBuilder(java_home_dst + "/bin/java",
112 "-version");
113 OutputAnalyzer out = TestCommon.executeAndLog(pb, "exec-missing-modules");
114 out.shouldHaveExitValue(1);
115 out.shouldContain("Failed setting boot class path.");
116 }
117 }
118
119 // Do a cheap clone of the JDK. Most files can be sym-linked. However, $JAVA_HOME/bin/java and $JAVA_HOME/lib/.../libjvm.so"
120 // must be copied, because the java.home property is derived from the canonicalized paths of these 2 files.
121 static void clone(File src, File dst) throws Exception {
122 if (dst.exists()) {
123 if (!dst.isDirectory()) {
124 throw new RuntimeException("Not a directory :" + dst);
125 }
126 } else {
127 if (!dst.mkdir()) {
128 throw new RuntimeException("Cannot create directory: " + dst);
129 }
130 }
131 for (String child : src.list()) {
132 if (child.equals(".") || child.equals("..")) {
133 continue;
134 }
135
136 File child_src = new File(src, child);
137 File child_dst = new File(dst, child);
138 if (child_dst.exists()) {
139 throw new RuntimeException("Already exists: " + child_dst);
140 }
141 if (child_src.isFile()) {
142 if (child.equals("libjvm.so") || child.equals("java")) {
143 Files.copy(child_src.toPath(), /* copy data to -> */ child_dst.toPath());
144 } else {
145 Files.createSymbolicLink(child_dst.toPath(), /* link to -> */ child_src.toPath());
146 }
147 } else {
148 clone(child_src, child_dst);
149 }
150 }
151 }
152
153 static void renameModulesFile(String javaHome) throws Exception {
154 String modulesDir = javaHome + File.separator + "lib";
155 File origModules = new File(modulesDir, "modules");
156 if (!origModules.exists()) {
157 throw new RuntimeException("modules file not found");
158 }
159
160 File renamedModules = new File(modulesDir, "orig_modules");
161 if (renamedModules.exists()) {
162 throw new RuntimeException("found orig_modules unexpectedly");
163 }
164
165 boolean success = origModules.renameTo(renamedModules);
166 if (!success) {
167 throw new RuntimeException("rename modules file failed");
168 }
169 }
170
171 static ProcessBuilder makeBuilder(String... args) throws Exception {
172 System.out.print("[");
173 for (String s : args) {
174 System.out.print(" " + s);
175 }
176 System.out.println(" ]");
177 return new ProcessBuilder(args);
178 }
179
180 private static String copyFakeModulesFromHelloJar() throws Exception {
181 String classDir = System.getProperty("test.classes");
182 String newFile = "hello.modules";
183 String path = classDir + File.separator + newFile;
184
185 Files.copy(Paths.get(classDir, "hello.jar"),
186 Paths.get(classDir, newFile),
187 StandardCopyOption.REPLACE_EXISTING);
188 return path;
189 }
190 }