Is any technical documentation available for Apple's new File System. By technical, I mean File System's internal structures, File allocation block etc. If Apple has not released any documentation, did someone tried to reverse engineer it?
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- If Apple has not released any documentation, did someone tried to reverse engineer it? This is unclear. Reverse engineer it how? What are you trying to achieve?– AllanCommentedFeb 14, 2018 at 11:38
- I am trying to write a recovery software for APFS. I need to know how this filesystem stores its files. How it manages its boot blocks, volume header, directory structure and file allocation.– mannanCommentedFeb 14, 2018 at 12:03
- I am trying to find something like this for APFS: dubeiko.com/development/FileSystems/HFSPLUS/tn1150.html– mannanCommentedFeb 14, 2018 at 12:05
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2 Answers
Apple File System Developer Documentation
Apple File System is a new, modern file system for iOS, macOS, tvOS, and watchOS. It is optimized for Flash/SSD storage and features strong encryption, copy-on-write metadata, space sharing, cloning for files and directories, snapshots, fast directory sizing, atomic safe-save primitives, and improved file system fundamentals.
See also Apple's File System Programming Guide.
Additionally, this blog APFS – A Backup Software Developer’s Perspective makes mention of APFS already being reverse engineered.
- I have already gone these documents/articles. I am trying to find something like this: dubeiko.com/development/FileSystems/HFSPLUS/tn1150.html– mannanCommentedFeb 14, 2018 at 12:08
Apple has released documentation for APFS. It's a little sparse, but most of the critical information should be there.
https://developer.apple.com/support/apple-file-system/Apple-File-System-Reference.pdf
