FAT12

Björn Götz

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Table of Contents

FAT12

Introduction
Prerequisites
Part I: Reading
Chapter 1: Hello, Disk!
Chapter 2: Mounting the Filesystem
Chapter 3: Listing the Root Directory
Chapter 4: Reading Files
Chapter 5: Reading Multi-Cluster Files
Chapter 6: Full Path Walking
Part II: Writing
Chapter 7: Deleting
Chapter 8: Moving (and Renaming)
Chapter 9: Creating Directories
Chapter 10: Writing Files
Part III: Advanced
Chapter 11: Formatting
Chapter 12: Running FAT12 Inside a Kernel
Conclusion
- What’s Next
- Thank You
Appendixes
Appendix A: Talking to a Real Disk
Appendix B: A First Look at Long Filename Support (LFN / VFAT)
Appendix C: The Boot Sector Fields We Skipped
Appendix D: FAT12 vs. FAT16 vs. FAT32

FAT12/Chapter 6: Full Path Walking

Chapter 6: Full Path Walking

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Subdirectories: Files in Disguise

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`src/fat12.c`

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`src/fat12.c`

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The Path Walking Algorithm

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`src/fat12.c`

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Retrofitting Reads

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`src/fat12.c`

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Watching the Walk

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What’s Next

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Chapter 5: Reading Multi-Cluster Files

Up next

Part II: Writing

In this chapter

Chapter 6: Full Path Walking
Subdirectories: Files in Disguise
The Path Walking Algorithm
Retrofitting Reads
Watching the Walk
What’s Next