From c7e20faa5fcad7a177cf6c306138010343dd6d3e Mon Sep 17 00:00:00 2001 From: Asahi Lina Date: Mon, 3 Apr 2023 18:48:11 +0900 Subject: 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 Signed-off-by: Asahi Lina Reviewed-by: Gary Guo Link: https://lore.kernel.org/r/20230224-rust-error-v3-2-03779bddc02b@asahilina.net Signed-off-by: Miguel Ojeda --- rust/kernel/error.rs | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'rust/kernel') diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs index 35894fa35efe..154d0ca6e2dc 100644 --- a/rust/kernel/error.rs +++ b/rust/kernel/error.rs @@ -76,6 +76,13 @@ impl Error { 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(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 for Error { -- cgit v1.2.3