Re: [RFC PATCH 11/11] loop: Allow priveleged operations for root in the namespace which owns a device

From: Seth Forshee
Date: Mon May 26 2014 - 05:16:22 EST


On Fri, May 23, 2014 at 08:48:25AM +0300, Marian Marinov wrote:
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> One question about this patch.
>
> Why don't you use the devices cgroup check if the root user in that namespace is allowed to use this device?
>
> This way you can be sure that the root in that namespace can not access devices to which the host system did not gave
> him access to.

That might be possible, but I don't want to require something on the
host to whitelist the device for the container. Then loop would need to
automatically add the device to devices.allow, which doesn't seem
desirable to me. But I'm not entirely opposed to the idea if others
think this is a better way to go.

Seth

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