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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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test/hotspot/jtreg/runtime/modules/ModulesSymLink.java Normal file
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/*
* Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2019, Google Inc. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @summary Test with symbolic linked lib/modules
* @bug 8220095
* @requires os.family == "linux" | os.family == "mac"
* @requires vm.flagless
* @requires !jdk.explodedImage
* @requires !jdk.static
* @library /test/lib
* @modules java.management
* jdk.jlink
* @run driver ModulesSymLink
*/
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
public class ModulesSymLink {
static String java_home;
static String test_jdk;
public static void main(String[] args) throws Throwable {
java_home = System.getProperty("java.home");
test_jdk = System.getProperty("user.dir") + File.separator +
"modulessymlink_jdk" + Long.toString(System.currentTimeMillis());
constructTestJDK();
ProcessBuilder pb = new ProcessBuilder(
test_jdk + File.separator + "bin" + File.separator + "java",
"-version");
OutputAnalyzer out = new OutputAnalyzer(pb.start());
out.shouldHaveExitValue(0);
}
// 1) Create a test JDK binary (jlink is used to help simplify the process,
// alternatively a test JDK could be copied from JAVA_HOME.)
// 2) Rename the test JDK's lib/modules to lib/0.
// 3) Then create a link to lib/0 as lib/modules.
static void constructTestJDK() throws Throwable {
Path jlink = Paths.get(java_home, "bin", "jlink");
System.out.println("Jlink = " + jlink);
OutputAnalyzer out = ProcessTools.executeProcess(jlink.toString(),
"--output", test_jdk,
"--add-modules", "java.base");
out.shouldHaveExitValue(0);
Path modules = Paths.get(test_jdk, "lib", "modules");
Path renamed_modules = Paths.get(test_jdk, "lib", "0");
Files.move(modules, renamed_modules);
Files.createSymbolicLink(modules, renamed_modules);
}
}