refs.c: update ref_transaction_delete to check for error and return status

diff --git a/refs.h b/refs.h
index b648819a2fc61c6989eb8ee42dedf6afc17bfdbb..71389a1f888ea02ec159d235a245181dba10e9ea 100644 (file)
--- a/refs.h
+++ b/refs.h
@@ -308,11 +308,15 @@ int ref_transaction_create(struct ref_transaction *transaction,
  * Add a reference deletion to transaction.  If have_old is true, then
  * old_sha1 holds the value that the reference should have had before
  * the update (which must not be the null SHA-1).
+ * Function returns 0 on success and non-zero on failure. A failure to delete
+ * means that the transaction as a whole has failed and will need to be
+ * rolled back.
  */
-void ref_transaction_delete(struct ref_transaction *transaction,
-                           const char *refname,
-                           const unsigned char *old_sha1,
-                           int flags, int have_old);
+int ref_transaction_delete(struct ref_transaction *transaction,
+                          const char *refname,
+                          const unsigned char *old_sha1,
+                          int flags, int have_old,
+                          struct strbuf *err);
 
 /*
  * Commit all of the changes that have been queued in transaction, as