Need to map SIDs for unknown users

[Jeremy Allison]

On Mon, Jul 14, 2003 at 11:47:46PM +0000, Andrew Bartlett wrote:
> 
> Except we need to have the kernel do access control for these users - and
> it needs posix IDs for that.  And it's not just Samba, we have NFS, FTP,
> AFP and HTTP access to these files.  

You can't just guess what uid/gid an unknown SID maps to.
What if you guess wrong.....

The best we should do here is to allow a vendor to make a
guess if they want to - via an external hook. It must be
off by default.

Jeremy.