SBD_DEVS_UNATTACHED
SBD_DEVS_UNATTACHED(sbp);
devs_unattached = SBD_DEVS_UNATTACHED(sbp);
if (SBD_DEVS_PRESENT(sbp) == SBD_DEVS_UNATTACHED(sbp)) {
if (devs_attached && ((devs_lost = SBD_DEVS_UNATTACHED(sbp)) != 0)) {
if (SBD_DEVS_UNATTACHED(sbp) == 0) {