wfDebugLog( 'FSFileBackend', __METHOD__ . ": cannot create directory $dir" );
$status->fatal( 'directorycreateerror', $params['dir'] ); // fails on races
} elseif ( !is_writable( $dir ) ) {
wfDebugLog( 'FSFileBackend', __METHOD__ . ": cannot create directory $dir" );
$status->fatal( 'directorycreateerror', $params['dir'] ); // fails on races
} elseif ( !is_writable( $dir ) ) {
$status->fatal( 'directoryreadonlyerror', $params['dir'] );
} elseif ( !is_readable( $dir ) ) {
$status->fatal( 'directoryreadonlyerror', $params['dir'] );
} elseif ( !is_readable( $dir ) ) {