[PATCH v2 21/23] refs.c: add methods for head_ref*

@@ -918,3 +918,13 @@ int resolve_gitlink_ref(const char *path, const char *refname,
 {
 	return refs->resolve_gitlink_ref(path, refname, sha1);
 }
+
+int head_ref(each_ref_fn fn, void *cb_data)
+{
+	return refs->head_ref(fn, cb_data);
+}
+
+int head_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
+{
+	return refs->head_ref_submodule(submodule, fn, cb_data);
+}

@@ -1600,12 +1600,12 @@ static int do_head_ref(const char *submodule, each_ref_fn fn, void *cb_data)
 	return 0;
 }
 
-int head_ref(each_ref_fn fn, void *cb_data)
+static int files_head_ref(each_ref_fn fn, void *cb_data)
 {
 	return do_head_ref(NULL, fn, cb_data);
 }
 
-int head_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
+static int files_head_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
 {
 	return do_head_ref(submodule, fn, cb_data);
 }

@@ -3309,6 +3309,8 @@ struct ref_be refs_files = {
 	files_peel_ref,
 	files_create_symref,
 	files_resolve_gitlink_ref,
+	files_head_ref,
+	files_head_ref_submodule,
 };
 
 struct ref_be *refs = &refs_files;

@@ -397,6 +397,10 @@ typedef int (*create_symref_fn)(const char *ref_target,
 typedef int (*resolve_gitlink_ref_fn)(const char *path, const char *refname,
 				      unsigned char *sha1);
 
+typedef int (*head_ref_fn)(each_ref_fn fn, void *cb_data);
+typedef int (*head_ref_submodule_fn)(const char *submodule, each_ref_fn fn,
+				     void *cb_data);
+
 struct ref_be {
 	transaction_begin_fn transaction_begin;
 	transaction_update_sha1_fn transaction_update_sha1;

@@ -417,6 +421,8 @@ struct ref_be {
 	peel_ref_fn peel_ref;
 	create_symref_fn create_symref;
 	resolve_gitlink_ref_fn resolve_gitlink_ref;
+	head_ref_fn head_ref;
+	head_ref_submodule_fn head_ref_submodule;
 };
 
 extern struct ref_be *refs;