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24 
25 /*
26  * @test
27  * @summary Test the handling of long path to the classlist file.
28  * @requires vm.cds
29  * @library /test/lib
30  * @modules java.base/jdk.internal.misc
31  *          java.management
32  *          jdk.jartool/sun.tools.jar
33  * @compile test-classes/Hello.java
34  * @run driver LongClassListPath
35  */
36 
37 import java.io.File;
38 import java.nio.file.Files;
39 import java.nio.file.Path;
40 import java.nio.file.Paths;
41 import java.nio.file.StandardCopyOption;
42 import java.util.Arrays;
43 import jdk.test.lib.cds.CDSOptions;
44 import jdk.test.lib.cds.CDSTestUtils;
45 import jdk.test.lib.process.OutputAnalyzer;
46 
47 public class LongClassListPath {
48     private static final int MAX_PATH = 260;
main(String[] args)49     public static void main(String[] args) throws Exception {
50         String[] classes = {"hello"};
51         String classList =
52             CDSTestUtils.makeClassList(classes).getPath();
53         String archiveName = "LongClassListPath.jsa";
54 
55         // Create a directory with long path and copy the classlist file to
56         // the directory.
57         Path classDir = Paths.get(System.getProperty("test.classes"));
58         Path destDir = classDir;
59         int subDirLen = MAX_PATH - classDir.toString().length() - 2;
60         if (subDirLen > 0) {
61             char[] chars = new char[subDirLen];
62             Arrays.fill(chars, 'x');
63             String subPath = new String(chars);
64             destDir = Paths.get(System.getProperty("test.classes"), subPath);
65         }
66         File longDir = destDir.toFile();
67         longDir.mkdir();
68         String destClassList = longDir.getPath() + File.separator + "LongClassListPath.classlist";
69         Files.copy(Paths.get(classList), Paths.get(destClassList), StandardCopyOption.REPLACE_EXISTING);
70 
71         CDSOptions opts = (new CDSOptions())
72             .addPrefix("-XX:ExtraSharedClassListFile=" + destClassList, "-cp", JarBuilder.getOrCreateHelloJar())
73             .setArchiveName(archiveName);
74         CDSTestUtils.createArchiveAndCheck(opts);
75     }
76 }
77