CVS secure shell?

[Infoman: Martin Kretschmar]

Well, this looks like a FAQ. But searching the site for
"secure shell" wasn't 100% rewarding. With a search to
"restricted cvs shell" google brought up several items.
Specifically the CVSH looks as if it was what we would
like to have.

For e.g. disallowing logins via SSH combined with a "rm"
of specific files inside the repository it would be nice
to have a shell which accepts only cvs command and maybe
exit. This would be added to the family of the available
shells.

Further informations would be welcome.

Regards,
         Martin