[Samba] "only user" deprecated

[Mike Cisar]

I have just finished a samba upgrade on a client's system and notice that
Samba now warns that "only user" is now deprecated.  

I did not originally set this system up, so I'm not entirely sure what the
purpose of flagging several of the shares with that flag had.  What I do
know is that it's important that I maintain that functionality whatever it
was :-)

What is the current recommended method of achieving the same end?

Thanks
>>>>> Mike <<<<<