Wedson Almeida Filho 76e2c2d9a2 rust: error: add From implementations for Error ... Add a set of `From` implementations for the `Error` kernel type. These implementations allow to easily convert from standard Rust error types to the usual kernel errors based on one of the `E*` integer codes. On top of that, the question mark Rust operator (`?`) implicitly performs a conversion on the error value using the `From` trait when propagating. Thus it is extra convenient to use. For instance, a kernel function that needs to convert a `i64` into a `i32` and to bubble up the error as a kernel error may write: fn f(x: i64) -> Result<...> { ... let y = i32::try_from(x)?; ... } which will transform the `TryFromIntError` into an `Err(EINVAL)`. Co-developed-by: Adam Bratschi-Kaye <ark.email@gmail.com> Signed-off-by: Adam Bratschi-Kaye <ark.email@gmail.com> Co-developed-by: Nándor István Krácser <bonifaido@gmail.com> Signed-off-by: Nándor István Krácser <bonifaido@gmail.com> Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com> Reviewed-by: Finn Behrens <me@kloenk.dev> [Reworded, adapted for upstream and applied latest changes] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>		2022-12-04 01:59:15 +01:00
..
allocator.rs	rust: add kernel crate	2022-09-28 08:58:24 +02:00
error.rs	rust: error: add From implementations for Error	2022-12-04 01:59:15 +01:00
lib.rs	rust: error: add From implementations for Error	2022-12-04 01:59:15 +01:00
prelude.rs	rust: macros: add #[vtable] proc macro	2022-12-04 01:59:15 +01:00
print.rs	rust: print: add pr_cont! macro	2022-12-01 20:12:44 +01:00
str.rs	rust: add kernel crate	2022-09-28 08:58:24 +02:00