Re: PID's Mapping
On 16/04/28, Deepika Sundar wrote:
Thank you for the replies.
As per My understanding Root as Admin it has the control over all the
namespaces.If this is correct,
As per my previous email, not necessarily.
(i) Is that root should have access to all namespace relate info,
for ex: PID's in the host is mapped to what PID's in the Namespace?
The initial PID namespace knows about all the PIDs on the machine since
the PID namespaces are hierarchical. There is a mapping from the PID in
the initial PID namespace to its PID in a child PID namespace. A child
PID namespace should never be able to find out what its PID is in a
parent PID namespace.
if not ,
(ii) Init should have only access to his own process and should not have
access to other namespace.
See above.
Is this design limitation (or) Is it designed for better security ?
Both.
On Wed, Apr 27, 2016 at 4:49 PM, Deepika Sundar
<sundar.deepika18(a)gmail.com> wrote:
> As per rule root(admin) is the one who is monitoring the system's
> information .so,there must exist some namespace information in proc field
> for the namespace related PID in global.Is this the way I'm approaching to
> the namespace related stuffs is correct?
>
> -Deepika
>
> On Mon, Apr 25, 2016 at 12:24 PM, Deepika Sundar <
> sundar.deepika18(a)gmail.com> wrote:
>
>> Yeah.
>> When the PID's which are in the namespace application has different PID
>> compared to Global PID.There would be some means to map the PID's in the
>> kernel level.Can anyone suggest How it can be mapped?
>>
>> On Wed, Apr 20, 2016 at 6:03 PM, Steve Grubb <sgrubb(a)redhat.com> wrote:
>>
>>> On Wednesday, April 20, 2016 10:06:38 AM Deepika Sundar wrote:
>>> > Is there any way that can be suggested as to map PID's of namespace
in
>>> > global?
>>>
>>> This is on the TODO list. We have been kicking around several ideas but
>>> have
>>> not come to a conclusion about what exactly needs to be done. The upshot
>>> of
>>> this is that basically containers have no support.
>>>
>>> -Steve
>>>
>>>
>>> > On Mon, Apr 18, 2016 at 8:47 PM, Paul Moore
<paul(a)paul-moore.com>
>>> wrote:
>>> > > Please ask your question on the mailing list so that everyone can
>>> benefit.
>>> > >
>>> > > On Mon, Apr 18, 2016 at 1:34 AM, Deepika Sundar
>>> > >
>>> > > <sundar.deepika18(a)gmail.com> wrote:
>>> > > > How it can be achieved ,Can I get any idea on this?
>>> > > >
>>> > > > On Fri, Apr 15, 2016 at 4:12 AM, Paul Moore
<paul(a)paul-moore.com>
>>> wrote:
>>> > > >> On Wed, Apr 13, 2016 at 1:43 AM, sowndarya kumar
>>> > > >>
>>> > > >> <sowndarya.nadar(a)gmail.com> wrote:
>>> > > >> > Hi
>>> > > >> >
>>> > > >> > Is there any way to map the PID's seen in the
namespace
>>> application
>>> > >
>>> > > with
>>> > >
>>> > > >> > the
>>> > > >> > PID's seen in global?
>>> > > >> > If it can be done please provide the documentation
or idea on
>>> how it
>>> > >
>>> > > can
>>> > >
>>> > > >> > be
>>> > > >> > done.
>>> > > >>
>>> > > >> In general the audit subsystem doesn't pay attention
to
>>> namespaces,
>>> > > >> all PIDs reported to userspace are reported with respect
to the
>>> init
>>> > > >> namespace.
>>> > > >>
>>> > > >> --
>>> > > >> paul moore
>>> > > >> www.paul-moore.com
>>> > > >>
>>> > > >> --
>>> > > >> Linux-audit mailing list
>>> > > >> Linux-audit(a)redhat.com
>>> > > >> https://www.redhat.com/mailman/listinfo/linux-audit
>>> > >
>>> > > --
>>> > > paul moore
>>> > > www.paul-moore.com
>>>
>>>
>>
>
- RGB
--
Richard Guy Briggs <rgb(a)redhat.com>
Kernel Security Engineering, Base Operating Systems, Red Hat
Remote, Ottawa, Canada
Voice: +1.647.777.2635, Internal: (81) 32635