Commit 4b0c68bd authored Nov 10, 2022 by Finn Behrens Committed by Miguel Ojeda Dec 04, 2022

rust: error: declare errors using macro



Add a macro to declare errors, which simplifies the work needed to
add each one, avoids repetition of the code and makes it easier to
change the way they are declared.

Signed-off-by: Finn Behrens <me@kloenk.dev>
Reviewed-by: Gary Guo <gary@garyguo.net>
[Reworded, adapted for upstream and applied latest changes]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

parent b13c9880

rust/kernel/error.rs

+10 −2

Original line number	Diff line number	Diff line
		@@ -8,8 +8,16 @@

		/// Contains the C-compatible error codes.
		pub mod code {
		/// Out of memory.
		pub const ENOMEM: super::Error = super::Error(-(crate::bindings::ENOMEM as i32));
		macro_rules! declare_err {
		($err:tt $(,)? $($doc:expr),+) => {
		$(
		#[doc = $doc]
		)*
		pub const $err: super::Error = super::Error(-(crate::bindings::$err as i32));
		};
		}

		declare_err!(ENOMEM, "Out of memory.");
		}

		/// Generic integer kernel error.