[rulkc] [RFC] Should we consider to re-write HFS/HFS+ in Rust?

[Viacheslav Dubeyko]

Hello,

One idea crossed my mind recently. And this is about re-writing
HFS/HFS+ in Rust. It could be interesting direction but I am not sure
how reasonable it could be. From one point of view, HFS/HFS+ are not
critical subsystems and we can afford some experiments. From another
point of view, we have enough issues in the HFS/HFS+ code and, maybe,
re-working HFS/HFS+ can make the code more stable.

I don't think that it's a good idea to implement the complete re-
writing of the whole driver at once. However, we need a some
unification and generalization of HFS/HFS+ code patterns in the form of
re-usable code by both drivers. This re-usable code can be represented
as by C code as by Rust code. And we can introduce this generalized
code in the form of C and Rust at the same time. So, we can re-write
HFS/HFS+ code gradually step by step. My point here that we could have
C code and Rust code for generalized functionality of HFS/HFS+ and
Kconfig would define which code will be compiled and used, finally.

How do you feel about this? And can we afford such implementation
efforts?

Thanks,
Slava.