fmd_fmri_unusable
rv = fmd_fmri_unusable(nvl);
rv = fmd_fmri_unusable(nvl) ? FMD_SERVICE_STATE_UNUSABLE :
us = fmd_fmri_unusable(asru);
us = fmd_fmri_unusable(ap->asru_fmri);
us = fmd_fmri_unusable(asru);
extern int fmd_fmri_unusable(nvlist_t *);