Re: [PATCH v2 16/21] refs: check submodules ref storage config

> All submodules must have the same ref storage (for now).  Confirm that
> this is so before attempting to do anything with submodule refs.
>
> Signed-off-by: David Turner <dturner@twopensource.com>
> ---
>  refs.c | 41 +++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 41 insertions(+)
>
> diff --git a/refs.c b/refs.c
> index 07f1dab..1ccc7f6 100644
> --- a/refs.c
> +++ b/refs.c
> @@ -297,8 +297,43 @@ int for_each_tag_ref(each_ref_fn fn, void *cb_data)
>  	return for_each_ref_in("refs/tags/", fn, cb_data);
>  }
>  
> +static int submodule_backend(const char *key, const char *value, void *data)
> +{
> +	char **path = data;
> +	if (!strcmp(key, "extensions.refstorage"))
> +		*path = xstrdup(value);
> +}