rust: implement Display and Debug for BStr

[ohno418]

Implement Display and Debug for BStr. Also, for this purpose, change BStr from a type alias to a newtype wrapper.

Closes #534

Similar PR here, but it seems to be out of date. And a little different from my PR.

[adamrk]

Seems good to me.

[ohno418]

Just improved the commit message, especially adding a subsystem prefix. So no code change with force push.

[KimWang906]

If this problem is not solved yet, I would like to contribute.

[ojeda]

@ohno418 Given we are in mainline, would you like to submit this to the list?

[ohno418]

Ah, yeah. I will submit this patch to the kernel mailing list later.
Thanks for caring about this, @ojeda !

[ojeda]

Thanks to you!

Cc'ing @Armavica in case they are still interested in sending their approach too -- it had tests, which was very nice.

Also please consider if a Co-developed-by tag or similar would be appropriate here (https://docs.kernel.org/process/submitting-patches.html#when-to-use-acked-by-cc-and-co-developed-by) -- perhaps you want to submit this together?

[ohno418]

Also please consider if a Co-developed-by tag or similar would be appropriate here

Sure.

Hi, @Armavica. Would it be okay if I mention you with a Co-developed-by tag in the mailing list? I plan to include the tests you wrote, if that's alright with you.

In case you find that a hassle, I'll just submit my patch to the list as it is.

[Armavica]

Hi @ohno418, thank you for your message, please feel free to use my tests and I would be happy to be mentioned as Co-developed-by!
Please let me know if there is anything else that I can do.

[ohno418]

This has been submitted to the list.
https://lore.kernel.org/rust-for-linux/ZbFBnXy7YWV0MFC0@ohnotp/