rust: error: Add Error::to_ptr()
This is the Rust equivalent to ERR_PTR(), for use in C callbacks.
Marked as #[allow(dead_code)] for now, since it does not have any
consumers yet.
Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
Signed-off-by: Asahi Lina <lina@asahilina.net>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://lore.kernel.org/r/20230224-rust-error-v3-2-03779bddc02b@asahilina.net
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs
index 35894fa..154d0ca 100644
--- a/rust/kernel/error.rs
+++ b/rust/kernel/error.rs
@@ -76,6 +76,13 @@
pub fn to_errno(self) -> core::ffi::c_int {
self.0
}
+
+ /// Returns the error encoded as a pointer.
+ #[allow(dead_code)]
+ pub(crate) fn to_ptr<T>(self) -> *mut T {
+ // SAFETY: self.0 is a valid error due to its invariant.
+ unsafe { bindings::ERR_PTR(self.0.into()) as *mut _ }
+ }
}
impl From<AllocError> for Error {
