Re: [PATCH v5 7/7] proc: add option to mount only a pids subset

[Alexey Gladkov]

On Fri, May 11, 2018 at 03:58:39PM +0200, Jann Horn wrote:
> On Fri, May 11, 2018 at 11:37 AM, Alexey Gladkov
> <gladkov.alexey@xxxxxxxxx> wrote:
> > This allows to hide all files and directories in the procfs that are not
> > related to tasks.
> 
> /proc/$pid/net and /proc/$pid/task/$tid/net aren't in scope for this
> protection, even though they contain information about the whole
> network namespace of the task, right?

Yes. The pidonly makes visible only pids subset. You can still access the
process namespaces via /proc/$pid/ns.

We can think of additional constraints since the parameters are not
stored in the pid namespace anymore.

-- 
Rgrds, legion