This code is the solution to NEU's CS-3650 Challenge 3 for the Spring 2020 semester. The challenge was to implement a virtual filesystem implementing COW functionality, allowing a user to easily undo recent filesystem actions.
- 1MB = 256 pages (4k blocks)
- 4096 byte pages
- Page0: super block, including bitmaps
- Page1 - n: inodes
- Rest of pages: Data
- 256 inodes
- Add a thing in every inode that is a list of incoming hard links.
- Every
inodehas version number. On write, copy iff version number is older than global version number. Inc global version only on callback from Fuse.
Used throughout:
- Insights from [Geoff Kuenning](https://www.cs.hmc.edu/~geoff/classes/hmc.cs135.201001/homework/fuse/fuse_doc.html 3rd-party FUSE documentation)
- Linux Programmer's Manual