[grateful]

This was my first thought also, but then I realized they'd just see there's no system files (or some marker file their app created) and block access.

[mindslight]

Then that is another security vulnerability to be patched. There should be no way for an app to tell if it is seeing the complete filesystem, or a filtered/sandboxed view.

[grateful]

Hmm that's a good idea, provide a view of generic system and the app itself..