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Programming the Microsoft® Windows® Driver Model
Author Walter Oney
Pages 640
Disk 1 Companion CD(s)
Level Intermediate
Published 10/13/1999
ISBN 9780735605886
ISBN-10 0-7356-0588-2
Price(USD) $49.99
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Chapter 5: The I/O Request Packet



The I/O Request Packet

The operating system uses a data structure known as an I/O request packet, or IRP, to communicate with a kernel-mode device driver. In this chapter, I'll discuss this important data structure and the means by which it's created, sent, processed, and ultimately destroyed. I'll end with a discussion of the relatively complex subject of IRP cancellation. This chapter is rather abstract, I'm afraid, because I haven't yet talked about any of the concepts that surround specific types of IRPs. You might, therefore, want to skim this chapter and refer back to it while you're reading later chapters.


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Last Updated: Friday, July 6, 2001