FULL PRODUCT VERSION :
java version "1.4.2_10"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_10-b03)
Java HotSpot(TM) Client VM (build 1.4.2_10-b03, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
SunOS <hostname omitted> 5.8 Generic_108528-24 sun4u sparc SUNW,Sun-Fire-V210


EXTRA RELEVANT SYSTEM CONFIGURATION :
> cleartool -ver
ClearCase version 2003.06.00 (Fri Apr 25 09:05:22 EDT 2003)
clearcase_p2003.06.00-19 (Tue Apr 05 22:23:24 EDT 2005)
clearcase_p2003.06.00-28 (Fri Nov 18 07:15:44 EST 2005)
clearcase_p2003.06.00-29 (Mon Nov 21 22:31:55 EST 2005)
@(#) MVFS version 2003.06.10+ (Fri Oct 28 16:28:10 2005)
cleartool 2003.06.10+ (Sat Oct 1 00:17:54 EDT 2005)
db_server 2003.06.10+ (Fri Sep 30 01:35:07 EDT 2005)
VOB database schema version: 53


A DESCRIPTION OF THE PROBLEM :
This bug is a regression from
java version "1.4.2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2-b28)
Java HotSpot(TM) Client VM (build 1.4.2-b28, mixed mode)

When trying to use FileChannel.lock() on a file that resides within IBM/Rational ClearCase file system, I get IOException

Exception in thread "main" java.io.IOException: Invalid argument
        at sun.nio.ch.FileChannelImpl.lock0(Native Method)
        at sun.nio.ch.FileChannelImpl.lock(FileChannelImpl.java:750)
        at java.nio.channels.FileChannel.lock(FileChannel.java:865)
        at tests.TestLock.main(TestLock.java:34)

This resembles pretty much the bug #6230772, but the latter is claimed to be fixed in 1.4.2_10.

Reproduces on 1.4.2_04 as well.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the attached code when the current directory is inside a ClearCase view.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No error should be seen
ACTUAL -
Exception in thread "main" java.io.IOException: Invalid argument
        at sun.nio.ch.FileChannelImpl.lock0(Native Method)
        at sun.nio.ch.FileChannelImpl.lock(FileChannelImpl.java:750)
        at java.nio.channels.FileChannel.lock(FileChannel.java:865)
        at tests.TestLock.main(TestLock.java:34)


ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "main" java.io.IOException: Invalid argument
        at sun.nio.ch.FileChannelImpl.lock0(Native Method)
        at sun.nio.ch.FileChannelImpl.lock(FileChannelImpl.java:750)
        at java.nio.channels.FileChannel.lock(FileChannel.java:865)
        at tests.TestLock.main(TestLock.java:34)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package tests;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import java.nio.channels.FileLock;

public class TestLock {

    public static void main(String[] args) throws IOException {
        File file = new File("lock");
        FileOutputStream fos = new FileOutputStream(file);
        FileLock fileLock = fos.getChannel().lock();
        fileLock.release();
    }
}

---------- END SOURCE ----------
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