Re: [PATCH v6 28/32] config: read ref storage config on startup

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On Mon, Feb 29, 2016 at 04:57:42PM -0500, David Turner wrote:

> > So I think this setup probably should be in
> > check_repository_format_gently(), and should be able to trigger off
> > of
> > the existing ref_storage_backend string we've already saved (and we
> > should bail immediately there if we don't know about the backend, as
> > it
> > means we _don't_ match the repo's extensions and cannot proceed).
> 
> We apparently don't always call check_repo_format before calling
> git_config_early -- or, more to the point, before doing ref operations.
> So I think we need this in git_config_early.

That seems horribly broken, though. If a program is accessing refs
without calling check_repository_format, isn't it bypassing all of our
regular version and extension checks?

I think we should be smoking out such cases (e.g., by setting
a null refs-backend, as I mentioned earlier) and fixing them, rather
than working around them by putting the backend setup in the wrong
place.

-Peff
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