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Re: git, monorepos, and access control

On 12/5/2018 3:34 PM, Ævar Arnfjörð Bjarmason wrote:
On Wed, Dec 05 2018, Coiner, John wrote:

I'm an engineer with AMD. I'm looking at whether we could switch our
internal version control to a monorepo, possibly one based on git and

Has anyone looked at adding access control to git, at a per-directory
granularity? Is this a feature that the git community would possibly
All of what you've described is possible to implement in git, but as far
as I know there's no existing implementation of it.

Microsoft's GVFS probably comes closest, and they're actively
upstreaming bits of that, but as far as I know that doesn't in any way
try to solve this "users XYZ can't even list such-and-such a tree"
(Avar has a lot of good ideas in his message, so I'm just going to add
on a few here.)

This directory-level security is not a goal for VFS for Git, and I don't
see itbecoming a priority as it breaks a number of design decisions we
made in our object storage and communication models.

The best I can think about when considering Git as an approach would be
to use submodules for your security-related content, and then have server-
side security for access to those repos. Of course, submodules are not
supported in VFS for Git, either.

The Gerrit service has _branch_ level security, which is related to the
reachability questions that a directory security would need. However,
the problem is quite different. Gerrit does have a lot of experience in
dealing with submodules, though, so that's probably a good place to