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.
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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 }