estricting dir contents per user

[rendhalver <ma...@ihug.com.au>]

hi guys
got a query that may be easy to solve maybe not

i am working on a project in mod_perl and php
we are intending to use mod_dav as a publishing tool
i have written a custom auth module for determining publish rights
i was wondering if it is possible to restrict what a user sees in a 
directory based on his publish rights
for example
the root directory contains DIR1 DIR2 DIR3 DIR4
user1 is allowed to publish to DIR1 and DIR2
user1 only sees DIR1 and DIR2 in his DAV client

any ideas ??

thanks in advance

Rendhalver