static ZERO_OR_ERROR OW_trees_for_read( char * device, char * property, struct one_wire_query * owq )
{
// find sensor node
struct sensor_node * sense_n = Find_External_Sensor( device ) ;
if ( sense_n != NULL ) {
// found
// find property node
struct property_node * property_n = Find_External_Property( sense_n->family, property ) ;
if ( property_n != NULL ) {
switch ( property_n->et ) {
case et_none:
return 0 ;
case et_internal:
return -ENOTSUP ;
case et_script:
return OW_read_external_script( sense_n, property_n, owq ) ;
default:
return -ENOTSUP ;
}
}
}
return -ENOENT ;
}
/* Device is known with serial number */
static enum parse_enum Parse_External_Device( char *filename, struct parsedname *pn)
{
struct sensor_node * sensor_n = Find_External_Sensor( filename ) ;
struct family_node * family_n = Find_External_Family( sensor_n->family ) ;
pn->selected_device = &(family_n->dev) ;
SetKnownBus(Inbound_Control.external->index, pn);
return parse_prop;
}
/* Return -ENOENT if not a valid name
return 0 if good
*next points to next segment, or NULL if not filetype
*/
static enum parse_enum Parse_RealDevice(char *filename, enum parse_pass remote_status, struct parsedname *pn)
{
pn->device_name = find_segment_in_path( filename, pn->path ) ;
switch ( Parse_SerialNumber(filename,pn->sn) ) {
case sn_not_sn:
if ( Find_External_Sensor( filename ) ) {
return Parse_External_Device( filename, pn ) ;
} else {
return Parse_Alias( filename, remote_status, pn) ;
}
case sn_valid:
return Parse_RealDeviceSN( remote_status, pn ) ;
case sn_invalid:
default:
return parse_error ;
}
}
