enum search_status BUS_first_alarm(struct device_search *ds, const struct parsedname *pn)
{
LEVEL_DEBUG("Start of directory path=%s device=" SNformat, SAFESTRING(pn->path), SNvar(pn->sn));
// reset the search state
BUS_first_both(ds);
ds->search = _1W_CONDITIONAL_SEARCH_ROM;
return BUS_next(ds, pn);
}
static GOOD_OR_BAD PresenceFromDirblob( struct parsedname * pn )
{
struct dirblob db; // cached dirblob
if ( GOOD( Cache_Get_Dir( &db , pn ) ) ) {
// Use the dirblob from the cache
GOOD_OR_BAD ret = ( DirblobSearch(pn->sn, &db ) >= 0 ) ? gbGOOD : gbBAD ;
DirblobClear( &db ) ;
return ret ;
} else {
// look through actual directory
struct device_search ds ;
enum search_status nextboth = BUS_first( &ds, pn ) ;
while ( nextboth == search_good ) {
if ( memcmp( ds.sn, pn->sn, SERIAL_NUMBER_SIZE ) == 0 ) {
// found it. Early exit.
BUS_next_cleanup( &ds );
return gbGOOD ;
}
// Not found. Clean up done by BUS_next in this case
nextboth = BUS_next( &ds, pn ) ;
}
return gbBAD ;
}
}