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LINUX
DEVICE
DRIVERS
,TITLE.9502 Page ii Thursday, January 27, 2005 12:06 PM
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LINUX
DEVICE
DRIVERS
THIRD EDITION
Jonathan Corbet, Alessandro
Rubini, and Greg Kroah-Hartman
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,COPYRIGHT.10321 Page iv Thursday, January 27, 2005 12:09 PM
Linux Device Drivers, Third Edition
by Jonathan Corbet, Alessandro Rubini, and Greg Kroah-Hartman
Copyright © 2005, 2001, 1998 O’Reilly Media, Inc. All rights reserved.
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Linux Device Drivers,
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[M]
,ldr3TOC.fm.4587 Page v Thursday, January 20, 2005 9:30 AM
Table of Contents
Preface
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
xi
1. An Introduction to Device Drivers
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
The Role of the Device Driver
Splitting the Kernel
Classes of Devices and Modules
Security Issues
Version Numbering
License Terms
Joining the Kernel Development Community
Overview of the Book
2
4
5
8
10
11
12
12
2. Building and Running Modules
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
Setting Up Your Test System
The Hello World Module
Kernel Modules Versus Applications
Compiling and Loading
The Kernel Symbol Table
Preliminaries
Initialization and Shutdown
Module Parameters
Doing It in User Space
Quick Reference
15
16
18
22
28
30
31
35
37
39
3. Char Drivers
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42
The Design of scull
Major and Minor Numbers
Some Important Data Structures
42
43
49
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