refs: add repository argument to get_main_ref_store

Add a repository argument to allow the get_main_ref_store caller
to be more specific about which repository to handle. This is a small
mechanical change; it doesn't change the implementation to handle
repositories other than the_repository yet.

As with the previous commits, use a macro to catch callers passing a
repository other than the_repository at compile time.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/refs.h b/refs.h
index 01be5ae32f..0d013377ce 100644
--- a/refs.h
+++ b/refs.h
@@ -758,7 +758,9 @@ int reflog_expire(const char *refname, const struct object_id *oid,
 
 int ref_storage_backend_exists(const char *name);
 
-struct ref_store *get_main_ref_store(void);
+#define get_main_ref_store(r) \
+	get_main_ref_store_##r()
+struct ref_store *get_main_ref_store_the_repository(void);
 /*
  * Return the ref_store instance for the specified submodule. For the
  * main repository, use submodule==NULL; such a call cannot fail. For