Re: jail() system call (was Re: prevent breaking a chroot() jail?)

[Chris Wright <chris@wirex.com>]

* Shaya Potter (spotter@cs.columbia.edu) wrote:
> Wow, this is what I need.  Would there be any interest in having this
> syscall in Linux, as I need to design something like this anyways for
> the research we are doing.
> 
> A first stab implementation would probably be as a module (as our
> research is based on a being usable just as a loadable module, w/o any
> direct kernel patch need, therefore until something is accepted into the
> kernel, we would need it like this), but we'd prefer it, and it
> definitely would be cleaner to have the jail tests integrated into the
> syscall and not wrapped by the module.

You could implement this policy in a security module.
http://lsm.immunix.org.

I don't believe you can do all of jail() with just capabilities, and as
a module it can always be extended.

thanks,
-chris
-- 
Linux Security Modules     http://lsm.immunix.org     http://lsm.bkbits.net