Re: [PATCH v23 17/22] richacl: Automatic Inheritance

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On Tue, Jul 12, 2016 at 9:11 PM, J. Bruce Fields <bfields@xxxxxxxxxxxx> wrote:
> On Tue, Jul 12, 2016 at 07:56:00AM -0400, Jeff Layton wrote:
>> Barf. AI seems like a trainwreck waiting to happen. What are the
>> chances that userland is going to get this right?
>
> This is just taken from Windows, so presumably Samba should do the right
> thing (with one workaround required--see the discussion of PROTECTED in
> the changelog).
>
>> Still, I do applaud the fact that you're just doing the bare minimum in
>> kernel to support userland apps that want this. Thanks for not trying
>> to push the propagation of the changed ACEs into the kernel.
>
> Agreed.  But, again, this is just what Windows does.  (I wonder whether
> there's an OS that's actually tried do any sort of atomic propagation.)

NetWare's NSS filesystem did have automatic propagation, but I think
that was implemented by composing the permissions along the path to a
file at access time.

Andreas

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