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Update for io_safety being stabilized. #41

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merged 8 commits into from Aug 16, 2022

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sunfishcode
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io_safety is now stable in Rust 1.63! This PR updates io-lifetimes to
use the standard library types and traits when available, and use its
own types and traits on older Rust versions.

The traits FromFd and IntoFd are now marked as deprecated. These are
replaced by From<OwnedFd> and From<...> for OwnedFd in the standard
library, and users should migrate accordingly.

io_safety is now [stable in Rust 1.63]! This PR updates io-lifetimes to
use the standard library types and traits when available, and use its
own types and traits on older Rust versions.

The traits `FromFd` and `IntoFd` are now marked as deprecated. These are
replaced by `From<OwnedFd>` and `From<...> for OwnedFd` in the standard
library, and users should migrate accordingly.

[stable in Rust 1.63]: https://blog.rust-lang.org/2022/08/11/Rust-1.63.0.html#rust-ownership-for-raw-file-descriptorshandles-io-safety
And, migrate the portability types and traits to use `From<OwnedFd>`
and `Into<OwnedFd>`.
This allows the `from_into_fd` extension to continue working, for now.
@sunfishcode
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This will be a semver-incompatible change. And since the main types and traits are stablized now, I think it makes sense to make this a 1.0 release.

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@notgull notgull left a comment

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Looks good to me, this is getting exciting

src/traits.rs Outdated
@@ -102,6 +102,10 @@ pub trait IntoHandle {
/// let owned_handle: OwnedHandle = f.into_handle();
/// # Ok::<(), io::Error>(())
/// ```
#[deprecated(
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Should a deprecation notice be attached to the traits as well?

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Good spot, yes, we can deprecate IntoFd and related traits.

I didn't mark FromFd and friends as deprecated yet, because they have the from_into_fd utility functions, which some users use and find handy. Fortunately, it's just a blanket impl for any type that implements From<OwnedFd>, so it's not something users need to implement themselves.

@sunfishcode sunfishcode merged commit 170df73 into main Aug 16, 2022
@sunfishcode sunfishcode deleted the sunfishcode/stable-io-safety branch August 16, 2022 16:57
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2 participants