1 /*
2 * Copyright (c) 2018, 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 main 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 }