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SubjectRe: [RFC PATCH] cgroup namespaces: add a 'nsroot=' mountinfo field
Hello, Serge.

On Wed, Apr 13, 2016 at 01:46:39PM -0500, Serge E. Hallyn wrote:
> It's not a leak of any information we're trying to hide. I realize
> something like 8 years have passed, but I still basically go by the
> ksummit guidance that containers are ok but the kernel's first priority
> is to facilitate containers but not trick containers into thinking
> they're not containerized. So long as the container is properly set
> up, I don't think there's anything the workload could do with the
> nsroot= info other than *know* that it is in a ns cgroup.
>
> If we did change that guidance, there's a slew of proc info that we
> could better virtualize :)

I see. I'm just wondering because the information here seems a bit
gratuituous. Isn't the only thing necessary telling whether the root
is bind mounted or namescoped? Wouldn't simple "nsroot" work for that
purpose?

Thanks.

--
tejun

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