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-rw-r--r--rust/kernel/error.rs45
-rw-r--r--rust/kernel/lib.rs1
2 files changed, 45 insertions, 1 deletions
diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs
index 861746f2422d..5b9751d7ff1d 100644
--- a/rust/kernel/error.rs
+++ b/rust/kernel/error.rs
@@ -4,7 +4,14 @@
//!
//! C header: [`include/uapi/asm-generic/errno-base.h`](../../../include/uapi/asm-generic/errno-base.h)
-use alloc::collections::TryReserveError;
+use alloc::{
+ alloc::{AllocError, LayoutError},
+ collections::TryReserveError,
+};
+
+use core::convert::From;
+use core::num::TryFromIntError;
+use core::str::Utf8Error;
/// Contains the C-compatible error codes.
pub mod code {
@@ -71,12 +78,48 @@ impl Error {
}
}
+impl From<AllocError> for Error {
+ fn from(_: AllocError) -> Error {
+ code::ENOMEM
+ }
+}
+
+impl From<TryFromIntError> for Error {
+ fn from(_: TryFromIntError) -> Error {
+ code::EINVAL
+ }
+}
+
+impl From<Utf8Error> for Error {
+ fn from(_: Utf8Error) -> Error {
+ code::EINVAL
+ }
+}
+
impl From<TryReserveError> for Error {
fn from(_: TryReserveError) -> Error {
code::ENOMEM
}
}
+impl From<LayoutError> for Error {
+ fn from(_: LayoutError) -> Error {
+ code::ENOMEM
+ }
+}
+
+impl From<core::fmt::Error> for Error {
+ fn from(_: core::fmt::Error) -> Error {
+ code::EINVAL
+ }
+}
+
+impl From<core::convert::Infallible> for Error {
+ fn from(e: core::convert::Infallible) -> Error {
+ match e {}
+ }
+}
+
/// A [`Result`] with an [`Error`] error type.
///
/// To be used as the return type for functions that may fail.
diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs
index abd46261d385..ffc6626a6d29 100644
--- a/rust/kernel/lib.rs
+++ b/rust/kernel/lib.rs
@@ -12,6 +12,7 @@
//! do so first instead of bypassing this crate.
#![no_std]
+#![feature(allocator_api)]
#![feature(core_ffi_c)]
// Ensure conditional compilation based on the kernel configuration works;