Function refs_update_ref

refs.c:1548–1585

}

int refs_update_ref(struct ref_store *refs, const char *msg,
		    const char *refname, const struct object_id *new_oid,
		    const struct object_id *old_oid, unsigned int flags,
		    enum action_on_err onerr)
{
	struct ref_transaction *t = NULL;
	struct strbuf err = STRBUF_INIT;
	int ret = 0;

	t = ref_store_transaction_begin(refs, 0, &err);
	if (!t ||
	    ref_transaction_update(t, refname, new_oid, old_oid, NULL, NULL,
				   flags, msg, &err) ||
	    ref_transaction_commit(t, &err)) {
		ret = 1;
		ref_transaction_free(t);
	}
	if (ret) {
		const char *str = _("update_ref failed for ref '%s': %s");

		switch (onerr) {
		case UPDATE_REFS_MSG_ON_ERR:
			error(str, refname, err.buf);
			break;
		case UPDATE_REFS_DIE_ON_ERR:
			die(str, refname, err.buf);
			break;
		case UPDATE_REFS_QUIET_ON_ERR:
			break;
		}
		strbuf_release(&err);
		return 1;
	}
	strbuf_release(&err);
	if (t)
		ref_transaction_free(t);
	return 0;
}

/*
 * Check that the string refname matches a rule of the form