File locking supported on all platforms?

[Jonas Konrad]

> I see NFS is mentioned in the discussion. Yes, there can be issues in 
> NFS environments but if the lock daemon is not running on the remote NFS 
> server then I would expect the lock or tryLock methods to throw an 
> IOException "No locks available".

Nope, it'll just grant the lock twice. Linux fcntl will not return an 
error so I don't see how the JDK could detect this case anyway

- Jonas