iokit/Kernel/IOService.cpp

2353 bool IOService::open( 	IOService *	forClient,
2362     context.excludeClient	= forClient;
2373         ok = handleOpen( forClient, options, arg );
2380 void IOService::close( 	IOService *	forClient,
2388     wasClosed = handleIsOpen( forClient );
2390         handleClose( forClient, options );
2397         forClient->scheduleStop( this );
2405         context.excludeClient	= forClient;
2413 bool IOService::isOpen( const IOService * forClient ) const
2420     ok = handleIsOpen( forClient );
2427 bool IOService::handleOpen( 	IOService *	forClient,
2435         __owner = forClient;
2441             __owner = forClient;
2448 void IOService::handleClose( 	IOService *	forClient,
2451     if( __owner == forClient)
2455 bool IOService::handleIsOpen( 	const IOService * forClient ) const
2457     if( forClient)
2458 	return( __owner == forClient );
2460 	return( __owner != forClient );