[HARMONY-6359] [classlib][luni] With root privilege, test_setReadOnly of org.apache.harmony.luni.tests.java.io.FileTest fails to pass - ASF JIRA

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This reduced test representing test_setReadOnly of org.apache.harmony.luni.tests.java.io.FileTest.java fails under root user.

import java.io.*;

class test_setReadOnly {
public static void main(String args[]) throws Exception

{ test_setReadOnly sl = new test_setReadOnly(); sl.test(); }

void test() throws Exception
{
File f = File.createTempFile("hyts_tf", ".tmp");
f.setReadOnly();
try

{ new FileOutputStream(f); System.err.println("failure: IOException not thrown"); }

catch (IOException ioe)

{ System.err.println("pass: IOException expected"); }

f.delete();
}
}

Under root user, DRL vm prints:
failure: IOException not thrown

From non root user:
pass: IOException expected