Give a group of users write access to one subdirectory

[Roger Boussen]

I have Samba working on an elementary school and the children has only read 
access to some mountpoints.
They are all member of a group which has write access at Unix level but the 
have only read access at samba level (2.2.1a).

Now there is a program that needs to write in a license file when a child 
start it.
So how do I configure samba so that they have write access only to a specific 
subdirectory

eg.

P: is mapped to \usr1\onderbw and the samba rights are read.

The directory they have to write  is 
P:\program\cd2\keys


-- 
Mvg.,

Roger

-- Running Redhat 7