Method start

USBToolBox/USBToolBox.cpp:430–464

}

bool USBToolBox::start(IOService *provider) {
    DEBUGLOGPROV("start start");
    // If we're here we couldn't get the instance in probe
    DEBUGLOGPROV("Trying to obtain via matching");
    this->controllerInstance = getControllerViaMatching();
    
    if (!(this->controllerInstance)) {
        SYSTEMLOGPROV("Failed to obtain via matching, falling back to iteration");
        this->controllerInstance = getControllerViaIteration();
    }
    
    if (!(this->controllerInstance)) {
        SYSTEMLOGPROV("Failed to obtain via iteration, falling back to notification");
        OSDictionary* matchingDict = createMatchingDictionary();
        
        if (!matchingDict) {
            SYSTEMLOGPROV("Failed to create matching dict!");
            return false;
        }
        if (!gIOPublishNotification) {
            SYSTEMLOGPROV("IOPublishNotification null!");
            OSSafeReleaseNULL(matchingDict);
            return false;
        }
        // static IONotifier* addMatchingNotification(const OSSymbol* type, OSDictionary* matching, IOServiceMatchingNotificationHandler handler, void* target, void* ref = NULL, SInt32 priority = 0)
        IONotifier* notifierStatus = addMatchingNotification(gIOMatchedNotification, matchingDict, _matchingCallback, this, matchingDict);
        SYSTEMLOGPROV("Installed controller notifier status: %s", notifierStatus ? "successful" : "failed");
    } else {
        mergeProperties();
        SYSTEMLOGPROV("Successfully applied properties, exiting");
        return false;
    }
    DEBUGLOGPROV("start exit");
    return super::start(provider);
}