Re: [PATCH V6 05/10] audit: log creation and deletion of namespace instances

From: Paul Moore
Date: Fri May 15 2015 - 16:42:53 EST

On Thursday, May 14, 2015 09:10:56 PM Oren Laadan wrote:
> [focusing on "containers id" - snipped the rest away]
> I am unfamiliar with the audit subsystem, but work with namespaces in other
> contexts. Perhaps the term "container" is overloaded here. The definition
> suggested by Steve in this thread makes sense to me: "a combination of
> namespaces". I imagine people may want to audit subsets of namespaces.
> For namespaces, can use a string like "A:B:C:D:E:F" as an identifier for a
> particular combination, where A-F are respective namespaces identifiers.
> (Can be taken for example from /proc/PID/ns/{mnt,uts,ipc,user,pid,net}).
> That will even be grep-able to locate records related to a particular
> subset
> of namespaces. So a "container" in the classic meaning would have all A-F
> unique and different from the init process, but processes separated only by
> e.g. mnt-ns and net-ns will differ from the init process in A and F.
> (If a string is a no go, then perhaps combine the IDs in a unique way into a
> super ID).

As has been mentioned in every other email in this thread, the kernel has no
concept of a container, it is a userspace idea and trying to generate a
meaningful value in the kernel is a mistake in my opinion. My current opinion
is that we allow userspace to set a container ID token as it sees fit and the
kernel will just use the value provided by userspace.

paul moore
security @ redhat

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