[PATCH] rust: cred: add safe abstractions for capable() and ns_capable()

[Miguel Ojeda]

On Fri, May 15, 2026 at 7:13 PM Arnav Sharma <arnav4324 at gmail.com> wrote:
>
> I don't have an immediate in-tree use case for this. I'm fairly new to kernel development and was going through the existing Rust-for-Linux abstractions. I noticed that capable() and ns_capable() had no safe Rust wrappers and attempted to fill that gap — I was approaching it more from a "Hmm.. this seems missing" angle rather than "Do we even need it". I understand now that abstractions need concrete users to justify their inclusion, and I'll keep that in mind going forward.

Yeah, in general, all kernel code needs a user, i.e. a justification
for it to be added (i.e. it is a general rule, not just for Rust
abstractions).

Please see https://rust-for-linux.com/contributing#submitting-new-abstractions-and-modules
for some more details.

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Cheers,
Miguel