Download E-books Windows 7 Device Driver (Addison-Wesley Microsoft Technology Series) PDF

“The bankruptcy on programming a KMDF motive force offers an excellent instance for readers to determine a driving force being made.”

–Patrick Regan, community administrator, Pacific Coast Companies


The First Authoritative advisor to Writing powerful, High-Performance home windows 7 equipment Drivers


Windows 7 machine driving force brings jointly all of the details skilled programmers have to construct quite trustworthy, high-performance home windows 7 drivers. across the world well known motive force improvement professional Ronald D. Reeves indicates the right way to utilize Microsoft’s robust new instruments and versions; retailer money and time; and successfully convey sturdy, powerful drivers.


Drawing on his unsurpassed event as either a motive force developer and teacher, Reeves demystifies Kernel and person Mode driving force improvement, home windows motive force origin (WDF) structure, motive force debugging, and plenty of different key issues. all through, he presents top practices for all elements of the driving force improvement approach, illuminating his insights with confirmed pattern code. how one can

  • Use WDF to lessen improvement time, enhance procedure balance, and increase serviceability
  • Take complete good thing about either the person Mode driving force Framework (UMDF) and the Kernel Mode driving force Framework (KMDF)
  • Implement most sensible practices for designing, constructing, and debugging either consumer Mode and Kernel Mode Drivers
  • Manage I/O requests and queues, self-managed I/O, synchronization, locks, plug-and-play, strength administration, equipment enumeration, and more
  • Develop UMDF drivers with COM
  • Secure Kernel Mode Drivers with secure defaults, parameter validation, counted UNICODE strings, and secure gadget naming techniques
  • Program and troubleshoot WMI aid in Kernel Mode Drivers
  • Utilize complex a number of I/O queuing techniques

Whether you’re developing home windows 7 drivers for laboratory gear, communications undefined, or the other machine or know-how, this publication may help you construct creation code extra speedy and get to industry sooner!

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When you get a pointer to an interface, you could name the interface tools by utilizing a similar syntax that's used for a pointer to a C++ process. for instance, if pWdfRequest is a pointer to an IWDFloRequest interface, the subsequent code is an instance of ways to invoke the interface’s ship strategy: HRESULT hr; hr = pWdfRequest- >Send( m_pIUsbTargetDevice, WDR_REQUEST_SEND_OPTION_SYNCHRONOUS, 0); Wow! e-book 5. 2 utilizing UMDF COM gadgets 117 The method’s go back price is an HRESULT, a customary go back kind for COM tools. HRESULT is identical to the NTSTATUS variety that Kernel Mode Drivers use as a go back worth and is utilized in a lot an identical method. it's important to not think about HRESULT as mistakes values. equipment occasionally have a number of go back values for achievement in addition to for failure. you could be certain the results of calling a style through evaluating the lower back HRESULT to the checklist of attainable values within the reference documentation. although, remember that those lists will not be continuously entire. Use the errorchecking macros which are mentioned presently to make sure that you don't omit a potential go back worth. it's also possible to try an HRESULT for easy luck or failure. COM presents macros for that goal that paintings very like the NT_SUCCESS macro. For an HRESULT go back price of hr: ■ ■ FAILED(hr) returns precise for failure and fake for fulfillment. SUCCEEDED(hr) returns fake for failure and precise for achievement. even though NTSTATUS and HRESULT are comparable, they aren't interchangeable. sometimes, details within the kind of an NTSTATUS price has to be back as an HRESULT. if so, you should use the HRESULT_FROM_NT macro to transform the NTSTATUS into an identical HRESULT. don't use this macro for an NTSTATUS worth of STATUS_SUCCESS. if so, go back the S_OK HRESULT price. five. 2. 1 acquiring an Interface on a UMDF item you could receive an interface on a UMDF item in a single of 3 methods: ■ ■ ■ The UMDF run time passes an interface pointer in to 1 of the driver’s callback equipment. the driving force creates a brand new WDF item through calling a UMDF item production procedure. the driving force calls IUnknown::QueryInterface to request a brand new interface from an present WDF item. it's also possible to obtain an Interface via a driving force process. the 1st case is the easiest. for instance, while the UMDF run time calls a driver’s IDriverEntry::OnDeviceAdd technique, it passes a pointer to the gadget object’s IWDFDriver interface. Wow! book 118 bankruptcy five utilizing COM to advance UMDF Drivers the next instance indicates this task: HRESULT CMyDriver::OnDeviceAdd( __in IWDFDriver *FxWdfDriver, __in IWDFDeviceInitialize *FxDeviceInit ) { // set up the driving force within the machine stack } you could then use FxWdfDriver to entry the tools at the driving force object’s IWDFDriver interface. don't liberate FxWdfDriver while you're comprehensive with it. The caller guarantees that the thing is still legitimate throughout the scope of the strategy name. differently to create a WDF item is by means of calling the precise UMDF item construction strategy.

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