On Mon, 12 Sep 2011 11:01:58 +0200
Martin Wilck <[email protected]> wrote:

> > For the record, I'm not 100% opposed to adding something like this as a
> > workaround. What would probably be better would be a way for someone to
> > specify the SPN in the mount options. The kernel could then pass that
> > to the upcall and we wouldn't need to trust this string from the
> > server. Admins would of course need to know what SPN to put in there
> > however. Something like:
> > 
> >     -o spn=cifs/otherhostname.example.com
> 
> Sounds good. In our AD environment, an admin can do
> 
> ldapsearch "(cn=$COMPUTERNAME)" serviceprincipalname
> 
> to get the supported principal name(s).
> 

If that's the standard mechanism that windows machines use to determine
this, we could consider doing something similar in cifs.upcall. Maybe
add a new command-line option that tells it to query a particular LDAP
server with krb5 auth to determine this?

-- 
Jeff Layton <[email protected]>
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