Function files_downcast

refs/files-backend.c:159–176

* Downcast ref_store to files_ref_store. Die if ref_store is not a * files_ref_store. required_flags is compared with ref_store's * store_flags to ensure the ref_store has all required capabilities. * "caller" is used in any necessary error messages. */

 * "caller" is used in any necessary error messages.
 */
static struct files_ref_store *files_downcast(struct ref_store *ref_store,
					      unsigned int required_flags,
					      const char *caller)
{
	struct files_ref_store *refs;

	if (ref_store->be != &refs_be_files)
		BUG("ref_store is type \"%s\" not \"files\" in %s",
		    ref_store->be->name, caller);

	refs = (struct files_ref_store *)ref_store;

	if ((refs->store_flags & required_flags) != required_flags)
		BUG("operation %s requires abilities 0x%x, but only have 0x%x",
		    caller, required_flags, refs->store_flags);

	return refs;
}

static void files_ref_store_release(struct ref_store *ref_store)
{