[eafer]

> C being a shitty language that does not force or even encourage programmers to handle errors

I don't see where this is coming from. Most of the world's top filesystems are written in C, and they work just fine. Maybe other languages could get better results, but it's hard to say with so little data.

> implementation knowledge about file system technology is generally stuck in the 1990s

If you are talking about me, that might be true, I'm relatively new to this and still learning. But there's definitely people out there with some serious "implementation knowledge". And tools like xfstests did not exist in the 1990s, that makes a huge difference.

[naasking]

I'm curious why you think file systems written in C would somehow be better than any other type of program written in C. We have plenty of data suggesting C programs have more bugs and vulnerabilities than programs written in safer languages.

[eafer]

If you are thinking about rust, we don't have any data about it in the context of the kernel yet, not even for device drivers. It may prevent some exploitable bugs, but those aren't a big concern for filesystems - otherwise they wouldn't be put inside the kernel at all. The reality is, we don't know if it would help; and given how conservative we all are with our filesystem implementations (for good reasons), it's possible that we never will.