I'm looking for a way to provide my scripts with virtual filesystem, ie, I would like to catch all the access to, for example '/myfs/'.

open($fd,"/myfs/file.1");
[download]

This can be done on OS-level, but that would be system-wide, not script-wide, OSes like HURD provide you with similar facilities, you can also trick app with dynamic-library overloading tricks, but I'm looking for something on perl-level (if it's at all doable).

I do understand that any perl-based solution would be invisible to some non-pure-perl modules, but it should still be usefull.

Is there anything like that outthere? (or maybe is it at all doable?)

UPDATE

I wonder why I haven't got any meaningfull replies, maybe the task in undoable in perl, or maybe I just phrased it badly... very badly.