文件名称:
The Linux Kernel Module Programming Guide 2.6
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文件大小: 526kb
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上传时间: 2009-12-29
详细说明： Table of Contents Foreword ..............................................................................................................................................................1 1. Authorship...........................................................................................................................................1 2. Versioning and Notes ...........................................................................................................................1 3. Acknowledgements ........................ ......................................................................................................1 Chapter 1. Introduction ......................................................................................................................................2 1.1. What Is A Kernel Module? ...............................................................................................................2 1.2. How Do Modules Get Into The Kernel? ...........................................................................................2 1.2.1. Before We Begin .....................................................................................................................3 Chapter 2. Hello World......................................................................................................................................5 2.1. Hello, World (part 1): The Simplest Module ....................................................................................5 2.1.1. Introducing printk() .................................................................................................................6 2.2. Compiling Kernel Modules..............................................................................................................6 2.3. Hello World (part 2) ..........................................................................................................................7 2.4. Hello World (part 3): The __init and __exit Macros ........................................................................8 2.5. Hello World (part 4): Licensing and Module Documentation ..........................................................8 2.6. Passing Command Line Arguments to a Module...........................................................................10 2.7. Modules Spanning Multiple Files ...................................................................................................12 2.8. Building modules for a precompiled kernel ....................................................................................13 Chapter 3. Preliminaries..................................................................................................................................16 3.1. Modules vs Programs ......................................................................................................................16 3.1.1. How modules begin and end.................................................................................................16 3.1.2. Functions available to modules .............................................................................................16 3.1.3. User Space vs Kernel Space ..................................................................................................17 3.1.4. Name Space ...........................................................................................................................17 3.1.5. Code space .............................................................................................................................18 3.1.6. Device Drivers .......................................................................................................................18 Chapter 4. Character Device Files..................................................................................................................20 4.1. Character Device Drivers ................................................................................................................20 4.1.1. The file_operations Structure................................................................................................20 4.1.2. The file structure...................................................................................................................21 4.1.3. Registering A Device............................................................................................................21 4.1.4. Unregistering A Device .........................................................................................................22 4.1.5. chardev.c ................................................................................................................................22 4.1.6. Writing Modules for Multiple Kernel Versions ....................................................................25 Chapter 5. The /proc File System....................................................................................................................27 5.1. The /proc File System.....................................................................................................................27 Chapter 6. Using /proc For Input ....................................................................................................................30 6.1. Using /proc For Input ......................................................................................................................30 Chapter 7. Talking To Device Files .................................................................................................................34 7.1. Talking to Device Files (writes and IOCTLs)}..............................................................................34 The Linux Kernel Module Programming Guide iTable of Contents Chapter 8. System Calls...................................................................................................................................43 8.1. System Calls...................................................................................................................................43 Chapter 9. Blocking Processes .........................................................................................................................48 9.1. Blocking Processes.........................................................................................................................48 9.1.1. Enter Sandman......................................................................................................................48 Chapter 10. Replacing Printks .........................................................................................................................54 10.1. Replacing printk ............................................................................................................................54 10.2. Flashing keyboard LEDs ...............................................................................................................56 Chapter 11. Scheduling Tasks.........................................................................................................................59 11.1. Scheduling Tasks..........................................................................................................................59 Chapter 12. Interrupt Handlers......................................................................................................................63 12.1. Interrupt Handlers .........................................................................................................................63 12.1.1. Interrupt Handlers ................................................................................................................63 12.1.2. Keyboards on the Intel Architecture...................................................................................64 Chapter 13. Symmetric Multi Processing .......................................................................................................67 13.1. Symmetrical Multi−Processing .....................................................................................................67 Chapter 14. Common Pitfalls ...........................................................................................................................68 14.1. Common Pitfalls...........................................................................................................................68 Appendix A. Changes: 2.0 To 2.2....................................................................................................................69 A.1. Changes between 2.0 and 2.2 .........................................................................................................69 A.1.1. Changes between 2.0 and 2.2...............................................................................................69 Appendix B. Where To Go From Here ...........................................................................................................70 B.1. Where From Here? .........................................................................................................................70 ...展开收缩
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