Add fcntl OFD commands for macOS

[anacrolix]

I also followed all the PR instructions and sorted the semver for apple.

[rustbot]

r? @JohnTitor

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[anacrolix]

So I noticed that the tests run on macos-13, and macos-14 is available (possibly needed for the OFD feature, despite the constants being 4 years old according to the kernel changelog), and also that the tests only run on Intel chips. I do not think it would be too much work to add aarch64 to the macos testing (assuming GitHub has a runner for this).

[JohnTitor]

Could you rebase onto the latest main and squash commits into one?

[anacrolix]

Yes, I'll do that soon, thanks.

[anacrolix]

Okay, I've done that. It's extraordinarily painful, any reason you can't squash on merge?

[anacrolix]

I don't think my change caused the macOS CI failure, I'm not sure what to do about that one.

[JohnTitor]

I don't think my change caused the macOS CI failure, I'm not sure what to do about that one.

You updated the macOS version and it introduced some breaking changes, you have to account for that.

Okay, I've done that. It's extraordinarily painful, any reason you can't squash on merge?

We use the merge queue and it doesn't allow me to select the merge method sadly.

[anacrolix]

It'll take someone more knowledgable about macos to fix this I think. I didn't find anything straightforward to resolve it.

[anacrolix]

I found https://github.com/rust-lang/libc/pull/3575 but it's mysteriously closed.

[anacrolix]

This includes https://github.com/rust-lang/libc/pull/3578 and should be merged after that.

[tgross35]

@anacrolix please rebase and drop the commits that are no longer needed (1a8e6f490df340ab080ca3507fc91178de7dfc5a, cb7d5b13877695b6ee082a59ea712fa431005cb7).

@rustbot author

[anacrolix]

Roger

[anacrolix]

@tgross35 Done

[tgross35]

There is also an empty change to ci/style.sh, can you drop that?