[PATCH v2 10/38] refs: add a transaction_commit() method

[Michael Haggerty]

From: Ronnie Sahlberg <sahlb...@google.com>

Signed-off-by: Ronnie Sahlberg <sahlb...@google.com>
Signed-off-by: David Turner <dtur...@twopensource.com>
Signed-off-by: Junio C Hamano <gits...@pobox.com>
Signed-off-by: Jeff King <p...@peff.net>
Signed-off-by: Michael Haggerty <mhag...@alum.mit.edu>
Signed-off-by: Junio C Hamano <gits...@pobox.com>
---
 refs.c               |  9 +++++++++
 refs/files-backend.c | 10 ++++++----
 refs/refs-internal.h |  5 +++++
 3 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/refs.c b/refs.c
index 9d6bcb1..9475844 100644
--- a/refs.c
+++ b/refs.c
@@ -1377,3 +1377,12 @@ void assert_main_repository(struct ref_store *refs, 
const char *caller)
        if (*refs->submodule)
                die("BUG: %s called for a submodule", caller);
 }
+
+/* backend functions */
+int ref_transaction_commit(struct ref_transaction *transaction,
+                          struct strbuf *err)
+{
+       struct ref_store *refs = get_ref_store(NULL);
+
+       return refs->be->transaction_commit(refs, transaction, err);
+}
diff --git a/refs/files-backend.c b/refs/files-backend.c
index 6913d45..d896052 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -3710,11 +3710,12 @@ static int lock_ref_for_update(struct ref_update 
*update,
        return 0;
 }
 
-int ref_transaction_commit(struct ref_transaction *transaction,
-                          struct strbuf *err)
+static int files_transaction_commit(struct ref_store *ref_store,
+                                   struct ref_transaction *transaction,
+                                   struct strbuf *err)
 {
        struct files_ref_store *refs =
-               get_files_ref_store(NULL, "ref_transaction_commit");
+               files_downcast(ref_store, 0, "ref_transaction_commit");
        int ret = 0, i;
        struct string_list refs_to_delete = STRING_LIST_INIT_NODUP;
        struct string_list_item *ref_to_delete;
@@ -4103,5 +4104,6 @@ int reflog_expire(const char *refname, const unsigned 
char *sha1,
 struct ref_storage_be refs_be_files = {
        NULL,
        "files",
-       files_ref_store_create
+       files_ref_store_create,
+       files_transaction_commit
 };
diff --git a/refs/refs-internal.h b/refs/refs-internal.h
index b952038..b7367ab 100644
--- a/refs/refs-internal.h
+++ b/refs/refs-internal.h
@@ -535,10 +535,15 @@ int read_raw_ref(const char *refname, unsigned char *sha1,
  */
 typedef struct ref_store *ref_store_init_fn(const char *submodule);
 
+typedef int ref_transaction_commit_fn(struct ref_store *refs,
+                                     struct ref_transaction *transaction,
+                                     struct strbuf *err);
+
 struct ref_storage_be {
        struct ref_storage_be *next;
        const char *name;
        ref_store_init_fn *init;
+       ref_transaction_commit_fn *transaction_commit;
 };
 
 extern struct ref_storage_be refs_be_files;
-- 
2.9.3