Right. But I need to be able to do chown/chmod when the tempdir DESTROY is method is destroyed. The issue is that under the tempdir, I have files that are undeletable by the current user (they were created earlier in the script and are owned by a user other then the current user). So, when my script exits, either normally or asynchronously via an error path/interrupt, the files under the tempdir do not get cleaned up. What I would like is a hook whereby I have the opportunity to reset ownership on the files prior to when the tempdir DESTROY method tries to unlink the files.