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SubjectRe: [PATCH v12 0/9] LSM: Multiple concurrent LSMs
On 1/10/2013 4:46 PM, Eric W. Biederman wrote:
> John Johansen <john.johansen@canonical.com> writes:
>
>> On 01/09/2013 05:28 AM, James Morris wrote:
>>> On Tue, 8 Jan 2013, John Johansen wrote:
>>>
>>>>> I'd say we need to see the actual use-case for Smack and Apparmor being
>>>>> used together, along with at least one major distro committing to support
>>>>> this.
>>>>>
>>>>>
>>>> Ubuntu is very interested in stacking
>>> Which modules?
>>>
>> Well Yama which has now been special cased, and in the past there has been
>> discussion about other special case LSMs like case is proposing for module
>> loading. There has been interest around both selinux + apparmor and
>> smack + apparmor. I am not sure of all of the use cases that have lead to
>> such question but some of them have been around containers, with say
>> selinux on the host and apparmor in the container, or visa versa.
> When a distro is run in a container it is desirable to be able to run
> the distro's security policy in that container. Ideally this will get
> addressed by being able to do some level of per user namespace stacking.
> Say selinux outside and apparmor inside a container.
>
> I think this would take a little more work than what Casey has currently
> devised but I am hopeful an additional layer of stacking can be added
> after Casey has merged the basic layer of stacking.

Would that be per-container LSM lists? I hadn't thought about
doing that, and don't know how you might implement it, but I
suppose it could work.

>
> Eric
>



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