AppleIrDA.cpp   [plain text]


#include "AppleIrDA.h"
#include "IrDAUser.h"
#include "IrDAUserClient.h"

#define super IORS232SerialStreamSync

    OSDefineMetaClassAndAbstractStructors(AppleIrDASerial, IORS232SerialStreamSync);
    

#undef super
#define super IOService
    OSDefineMetaClassAndStructors( AppleIrDA, IOService );

/*static*/
AppleIrDA*
AppleIrDA::withNub(AppleIrDASerial *nub)
{
    AppleIrDA *obj;

    obj = new AppleIrDA;
    
    if (obj != NULL) {
	if (obj->init() == false) {
	    obj->release();
	    obj = NULL;
	}
    }
    if (obj != NULL) {
	obj->fNub = nub;
    }
    return (obj);
}

IOReturn
AppleIrDA::newUserClient( task_t owningTask, void*, UInt32 type, IOUserClient **handler )
{

    IOReturn ioReturn = kIOReturnSuccess;
    IrDAUserClient *client = NULL;

    ELG( 0, type, 'irda', "new user client" );
 
   // Check that this is a user client type that we support.
   // type is known only to this driver's user and kernel
   // classes. It could be used, for example, to define
   // read or write privileges. In this case, we look for
   // a private value.
    if (type != kIrDAUserClientCookie) {        // some magic cookie
	ioReturn = -1;
	ELG(0, 0, 'irda', "bad magic cookie");
    }
    else {
       // Construct a new client instance for the requesting task.
       // This is, essentially  client = new IrDAUserClient;
       //                               ... create metaclasses ...
       //                               client->setTask(owningTask)
	client = IrDAUserClient::withTask(owningTask);
	if (client == NULL) {
	    ioReturn = -2;
	    ELG(0, 0, 'irda', "Can not create user client");
	}
    }
    if (ioReturn == kIOReturnSuccess) {
       // Attach client to our nub.
	if (client->attach(fNub) == false) {
	    ioReturn = -3;
	    ELG(0, 0, 'irda', "Can not attach user client");
	}
    }
    if (ioReturn == kIOReturnSuccess) {
       // Start the client so it can accept requests.
	if (client->start(fNub) == false) {
	    ioReturn = -4;
	    ELG(0, 0, 'irda', "Can not start user client");
	}
    }
    if (ioReturn != kIOReturnSuccess && client != NULL) {
	client->detach(fNub);
	client->release();
    }
    *handler = client;
    return (ioReturn);
}