Re: [PATCH v12 0/5] rust: replace kernel::str::CStr w/ core::ffi::CStr

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On Tue, Jul 1, 2025 at 6:44 AM Alice Ryhl <aliceryhl@xxxxxxxxxx> wrote:
>
> On Thu, Jun 19, 2025 at 11:06:24AM -0400, Tamir Duberstein wrote:
> > This picks up from Michal Rostecki's work[0]. Per Michal's guidance I
> > have omitted Co-authored tags, as the end result is quite different.
> >
> > Link: https://lore.kernel.org/rust-for-linux/20240819153656.28807-2-vadorovsky@xxxxxxxxxxxxxx/t/#u [0]
> > Closes: https://github.com/Rust-for-Linux/linux/issues/1075
> >
> > Signed-off-by: Tamir Duberstein <tamird@xxxxxxxxx>
>
> Overall LGTM. Only question is whether we should re-export
> core::ffi::CStr from kernel::ffi. Reason being that right now we are
> telling people to never use core::ffi as the integer types are wrong,
> and I think it would be nice if we can continue to tell people "never
> use core::ffi".

I agree that'd be nice. There are existing references to items in
`core::ffi` scattered around (e.g. in rust/kernel/drm/file.rs); it
would be good to clean all those up together with CStr provided we
have some ability to lint against new occurrences.

I'll leave this as-is for now since this series has already churned
quite a lot, and the cleanup can be a reasonable first task for
someone.

>
> Either way, for the whole series:
> Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>

Thanks! I'll send the rebase on rc3 momentarily.
Tamir





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