Windows NT File System Internals - A Developers Guide.pdf

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Building NT File System Drivers
Windows NT
A Developer's Guide
O'REILLY
Rajeev Nagar
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Windows NT File System Internals
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This book is dedicated to:
My parents, Maya and Yogesh
My wife and best friend, Priya
Our beautiful daughters, Sana and Ria
For it is their faith, support, and encouragement
that inspires me to keep striving
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Table of Contents
Preface ..................................................................................................................... ix
I. Overview .................................................................................................... l
1. Windows NT System Components ....................................................... 3
The Basics ........................................................................................................ 3
The Windows NT Kernel ................................................................................. 9
The Windows NT Executive .......................................................................... 15
2. File System, Driver Development ....................................................... 20
What Are File System Drivers? ....................................................................... 21
What Are Filter Drivers? ................................................................................. 33
Common Driver Development Issues ........................................................... 36
Windows NT Object Name Space ................................................................. 56
Filename Handling for Network Redirectors ................................................ 60
3. Structured Driver Development........................................................ 65
Exception Dispatching Support ..................................................................... 66
Structured Exception Handling (SEH) .......................................................... 74
Event Logging ................................................................................................. 86
Driver Synchronization Mechanisms ............................................................. 93
Supporting Routines (RTLs) ......................................................................... 112
vii
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Table of Contents
II. The Managers .................................................................................... 115
4. The NT I/O Manager ........................................................................... 777
The NT I/O Subsystem ................................................................................ 118
Common Data Structures ............................................................................. 735
I/O Requests: A Discussion ......................................................................... 180
System Boot Sequence ................................................................................. 185
5. The NT Virtual Memory Manager .................................................. 194
Functionality .........................................'........................................................ 195
Process Address Space ................................................................................. 196
Physical Memory Management .................................................................... 201
Virtual Address Support ............................................................................... 204
Shared Memory and Memory-Mapped File Support .................................. 213
Modified and Mapped Page Writer ............................................................. 224
Page Fault Handling ..................................................................................... 230
Interactions with File System Drivers .......................................................... 233
6. The NT Cache Manager I ................................................................... 243
Functionality ................................................................................................. 244
File Streams .................................................................................................. 245
Virtual Block Caching .................................................................................. 246
Caching During Read and Write Operations .............................................. 248
Cache Manager Interfaces ............................................................................ 255
Cache Manager Clients ................................................................................ 258
Some Important Data Structures ................................................................. 250
File Size Considerations ............................................................................... 257
7. The NT Cache Manager II ................................................................. 270
Cache Manager Structures ........................................................................... 277
Interaction with Clients (File Systems and Network Redirectors) ............. 273
Cache Manager Interfaces ............................................................................ 2.93
8. The NT Cache Manager HI ................................................................ 325
Flushing the Cache ...................................................................................... 325
Termination of Caching ............................................................................... 328
Miscellaneous File Stream Manipulation Functions ................................... 334
Interactions with the VMM .......................................................................... 344
Interactions with the I/O Manager .............................................................. 348
The Read-Ahead Module ............................................................................. 349
Lazy- Write Functionality .............................................................................. 352
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