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103 lines
4.0 KiB
Java
103 lines
4.0 KiB
Java
/*
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* Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @summary JVM should be able to handle loading class via symlink on windows
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* @requires vm.flagless
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* @library /test/lib
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* @run testng/othervm TestSymlinkLoad
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*/
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import java.io.File;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import jdk.test.lib.compiler.CompilerUtils;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.util.FileUtils;
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import org.testng.SkipException;
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import org.testng.annotations.Test;
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public class TestSymlinkLoad {
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@Test
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public void testSymlinkClassLoading() throws Exception {
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Path sourceDir = Paths.get(System.getProperty("test.src"), "test-classes");
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String subPath = "compiled";
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Path destDir = Paths.get(System.getProperty("test.classes"), subPath);
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CompilerUtils.compile(sourceDir, destDir);
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String bootCP = "-Xbootclasspath/a:" + destDir.toString();
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String className = "Hello";
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// try to load a class itself directly, i.e. not via a symlink
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
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bootCP, className);
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// make sure it runs as expected
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OutputAnalyzer output = new OutputAnalyzer(pb.start());
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output.shouldContain("Hello World")
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.shouldHaveExitValue(0);
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// create a symlink to the classfile in a subdir with a given name
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Path classFile = Path.of(destDir + File.separator + className + ".class");
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final String subdir = "remote";
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final String pathToFolderForSymlink = destDir + File.separator + subdir + File.separator;
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createLinkInSeparateFolder(pathToFolderForSymlink, classFile, className);
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// try to load class via its symlink, which is in a different directory
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pb = ProcessTools.createLimitedTestJavaProcessBuilder(
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bootCP + File.separator + subdir, className);
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output = new OutputAnalyzer(pb.start());
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output.shouldContain("Hello World")
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.shouldHaveExitValue(0);
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// remove the subdir
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FileUtils.deleteFileTreeWithRetry(Path.of(pathToFolderForSymlink));
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}
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public static void createLinkInSeparateFolder(final String pathToFolderForSymlink, final Path target, final String className) throws IOException {
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File theDir = new File(pathToFolderForSymlink);
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if (!theDir.exists()) {
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theDir.mkdirs();
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}
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Path link = Paths.get(pathToFolderForSymlink, className + ".class");
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if (Files.exists(link)) {
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Files.delete(link);
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}
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try {
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Files.createSymbolicLink(link, target);
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} catch (UnsupportedOperationException uoe) {
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throw new SkipException("Symbolic link creation not supported.", uoe);
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} catch (IOException ioe) {
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throw new SkipException("Probably insufficient privileges to create symbolic links (Windows)", ioe);
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}
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}
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}
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