Re: [RFC 1/1] shiftfs: uid/gid shifting bind mount

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On Tue, Feb 07, 2017 at 11:01:29PM +0200, Amir Goldstein wrote:
> Project id's are not exactly "subtree" semantic, but inheritance semantics,
> which is not the same when non empty directories get their project id changed.
> Here is a recap:
> https://lwn.net/Articles/623835/

Yes - but if we abuse them for containers we could refine the semantics
to simply not allow change of project ids from inside containers
based on say capabilities.

> I guess we should define the semantics for the required sub-tree marking,
> before we can talk about solutions.

Good plan.



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