Re: [PATCH 5/9] Make use of permissions, returned by kobj_lookup

[Casey Schaufler]

--- Stephen Smalley <sds@xxxxxxxxxxxxx> wrote:

> 
> On Fri, 2008-03-07 at 12:30 -0600, Serge E. Hallyn wrote:
> > Quoting Casey Schaufler (casey@xxxxxxxxxxxxxxxx):
> > > 
> > > --- "Serge E. Hallyn" <serue@xxxxxxxxxx> wrote:
> > > 
> > > > ...
> > > > 
> > > > Until user namespaces are complete, selinux seems the only good
> solution
> > > > to offer isolation.
> > > 
> > > Smack does it better and cheaper. (Unless you define good==selinux)
> > > (insert smiley)
> > 
> > Ah, thanks - I hadn't looked into it, but yes IIUC smack should
> > definately work.  I'll have to give that a shot.
> 
> Not if you want to confine uid 0.  smack doesn't control capabilities,
> even the ones used to override it.
> 
> So you'd have to at least configure your per-process bset and file caps
> rather carefully.  And even then you have to watch out for things with
> CAP_MAC* or CAP_SETPCAP.

Shrug. As if getting 800,000 lines of policy definition
for a thousand applications completely correct is going to be easier.


Casey Schaufler
casey@xxxxxxxxxxxxxxxx
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