/* We've reached a /bus.n entry */
static enum parse_enum Parse_Bus( INDEX_OR_ERROR bus_number, struct parsedname *pn)
{
static regex_t rx_p_bus ;
struct ow_regmatch orm ;
ow_regcomp( &rx_p_bus, "^/bus\\.[[:digit:]]+/?", REG_ICASE ) ;
orm.number = 0 ;
/* Processing for bus.X directories -- eventually will make this more generic */
if ( INDEX_NOT_VALID(bus_number) ) {
return parse_error;
}
/* Should make a presence check on remote buses here, but
* it's not a major problem if people use bad paths since
* they will just end up with empty directory listings. */
if (SpecifiedLocalBus(pn)) { /* already specified a "bus." */
/* too many levels of bus for a non-remote adapter */
return parse_error;
} else if (SpecifiedRemoteBus(pn)) { /* already specified a "bus." */
/* Let the remote bus do the heavy lifting */
pn->state |= ePS_busveryremote;
return parse_first;
}
/* Since we are going to use a specific in-device now, set
* pn->selected_connection to point at that device at once. */
if ( SetKnownBus(bus_number, pn) ) {
return parse_error ; // bus doesn't exist
}
pn->state |= BusIsServer((pn)->selected_connection) ? ePS_busremote : ePS_buslocal ;
if (SpecifiedLocalBus(pn)) {
/* don't return bus-list for local paths. */
pn->control_flags &= (~SHOULD_RETURN_BUS_LIST);
}
/* Create the path without the "bus.x" part in pn->path_to_server */
if ( ow_regexec( &rx_p_bus, pn->path, &orm ) == 0 ) {
strcpy( pn->path_to_server, orm.pre[0] ) ;
strcat( pn->path_to_server, "/" ) ;
strcat( pn->path_to_server, orm.post[0] ) ;
ow_regexec_free( &orm ) ;
}
return parse_first;
}
/* Used for virtual directories like settings and statistics
* If local, applies to all local (this program) and not a
* specific local bus.
* If remote, pass it on for the remote to handle
* */
static enum parse_enum set_type( enum ePN_type epntype, struct parsedname * pn )
{
if (SpecifiedLocalBus(pn)) {
return parse_error;
} else if ( ! SpecifiedRemoteBus(pn) ) {
pn->type |= ePS_busanylocal;
}
pn->type = epntype;
return parse_nonreal;
}
/* Write to interface dir */
static ZERO_OR_ERROR FS_w_interface(struct one_wire_query *owq)
{
struct parsedname *pn = PN(owq);
if ( pn->selected_connection == NO_CONNECTION ) {
LEVEL_DEBUG("Attempt to write to no bus for /settings");
return -ENODEV ;
} else if ( SpecifiedLocalBus(pn) ) {
return FS_w_local(owq);
} else {
return ServerWrite(owq);
}
}
