diff options
| author | Alice Ryhl <aliceryhl@google.com> | 2026-10-13 12:37:54 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-10-13 15:59:46 +0200 |
| commit | aeef0f8a3af2e3003c1c4019cf8fcb5f4b14f17f (patch) | |
| tree | 3281d4a0a9201f8c27eb09d83268bd32e1c99c25 /rust | |
| parent | ba9d2c7ea7f8fd02726241e9b93a2a31d30c77ea (diff) | |
rust: error: implement ZeroableOption for Error
Rust Binder wants to store an Option<Error> in TransactionInfo, which
derives Zeroable. Implement ZeroableOption for Error so that
Option<Error> implements Zeroable.
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20261013-binder-consolidate-txn-prints-v2-1-cf78927dab23@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'rust')
| -rw-r--r-- | rust/kernel/error.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/rust/kernel/error.rs b/rust/kernel/error.rs index e52793f77196..9003a1b86da8 100644 --- a/rust/kernel/error.rs +++ b/rust/kernel/error.rs @@ -199,8 +199,13 @@ pub mod code { /// /// The value is a valid `errno` (i.e. `>= -MAX_ERRNO && < 0`). #[derive(Clone, Copy, PartialEq, Eq)] +#[repr(transparent)] pub struct Error(NonZeroI32); +// SAFETY: `Error` is `repr(transparent)` over `NonZeroI32`, which is part of the option layout +// optimization guarantee, so all zeroes is a valid representation for `None`. +unsafe impl pin_init::ZeroableOption for Error {} + impl Error { /// Creates an [`Error`] from a kernel error code. /// |