[Tracker] A ram fs in rust

[foxhlchen]

This is a tracker of the development progress of ramfs in rust.
It's not intended to get merged before its completion

The ultimate goal is to write a complete ram fs in rust as discussed in #369

It's still under heavy development, so I didn't put much effort into documenting
it and there may be debugging code. Please bear with me.

Anyone is welcome to leave comments or contribute.

Current status

We can register and mount the fs,
and read/write some predefined files in the root folder.

$ sudo modprobe rust_ramfs
$ sudo mount -t rust_ramfs none /mnt/
$ cd /mnt/
$ ls -l
total 0
-r-------- 1 root root 0 Jul  1 13:22 infiniteI
-r-----r-- 1 root root 0 Jul  1 13:22 testfile
$ cat testfile
This is a test file.

Todo

• register/unregister
• mount/unmount
• full superblock functionality
• full inode functionality
• full dentry functionality
• fileobject

End Goal

• A complete ram fs in rust

[ksquirrel]

Review of e4ef6267f980:

• ⚠️ This PR adds/deletes more than 500 lines.
• ✔️ Commit e4ef626: Looks fine!

[jdharms]

By any chance is anyone still working on this? I'd be interested in helping. I wrote a fs driver in college and would love to work on another and improve my Rust skills.

[foxhlchen]

By any chance is anyone still working on this? I'd be interested in helping. I wrote an fs driver in college and would love to work on another and improve my Rust skills.

No, it's stranded. I think @wedsonaf is working on a demo fs that will provide some abstract for vfs?

It may be worth restarting this work.