jdk-24/test/hotspot/jtreg/runtime/LoadClass/LongBCP.java
Calvin Cheung e7ff0665e4 8188122: Path length limits on Windows leads to obscure class loading failures
Used the unicode version of windows API's to handled long paths and avoid using the stat() function.

Reviewed-by: stuefe, iklam
2017-11-21 09:49:52 -08:00

128 lines
4.6 KiB
Java

/*
* Copyright (c) 2017, Oracle and/or its affiliates. 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
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*/
/*
* @test
* @summary JVM should be able to handle full path (directory path plus
* class name) or directory path longer than MAX_PATH specified
* in -Xbootclasspath/a on windows.
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
* @run main LongBCP
*/
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import jdk.test.lib.Platform;
import jdk.test.lib.compiler.CompilerUtils;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
public class LongBCP {
private static final int MAX_PATH = 260;
public static void main(String args[]) throws Exception {
Path sourceDir = Paths.get(System.getProperty("test.src"), "test-classes");
Path classDir = Paths.get(System.getProperty("test.classes"));
Path destDir = classDir;
// create a sub-path so that the destDir length is almost MAX_PATH
// so that the full path (with the class name) will exceed MAX_PATH
int subDirLen = MAX_PATH - classDir.toString().length() - 2;
if (subDirLen > 0) {
char[] chars = new char[subDirLen];
Arrays.fill(chars, 'x');
String subPath = new String(chars);
destDir = Paths.get(System.getProperty("test.classes"), subPath);
}
CompilerUtils.compile(sourceDir, destDir);
String bootCP = "-Xbootclasspath/a:" + destDir.toString();
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
bootCP, "Hello");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldContain("Hello World")
.shouldHaveExitValue(0);
// increase the length of destDir to slightly over MAX_PATH
destDir = Paths.get(destDir.toString(), "xxxxx");
CompilerUtils.compile(sourceDir, destDir);
bootCP = "-Xbootclasspath/a:" + destDir.toString();
pb = ProcessTools.createJavaProcessBuilder(
bootCP, "Hello");
output = new OutputAnalyzer(pb.start());
output.shouldContain("Hello World")
.shouldHaveExitValue(0);
// relative path tests
// We currently cannot handle relative path specified in the
// -Xbootclasspath/a on windows.
//
// relative path length within the 256 limit
char[] chars = new char[255];
Arrays.fill(chars, 'y');
String subPath = new String(chars);
destDir = Paths.get(".", subPath);
CompilerUtils.compile(sourceDir, destDir);
bootCP = "-Xbootclasspath/a:" + destDir.toString();
pb = ProcessTools.createJavaProcessBuilder(
bootCP, "Hello");
output = new OutputAnalyzer(pb.start());
if (!Platform.isWindows()) {
output.shouldContain("Hello World")
.shouldHaveExitValue(0);
} else {
output.shouldContain("Could not find or load main class Hello")
.shouldHaveExitValue(1);
}
// total relative path length exceeds MAX_PATH
destDir = Paths.get(destDir.toString(), "yyyyyyyy");
CompilerUtils.compile(sourceDir, destDir);
bootCP = "-Xbootclasspath/a:" + destDir.toString();
pb = ProcessTools.createJavaProcessBuilder(
bootCP, "Hello");
output = new OutputAnalyzer(pb.start());
if (!Platform.isWindows()) {
output.shouldContain("Hello World")
.shouldHaveExitValue(0);
} else {
output.shouldContain("Could not find or load main class Hello")
.shouldHaveExitValue(1);
}
}
}