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[v2,2/8] rust: Add a Sealed trait

Message ID 20240618233324.14217-3-dakr@redhat.com (mailing list archive)
State New, archived
Headers show
Series DRM Rust abstractions and Nova | expand

Commit Message

Danilo Krummrich June 18, 2024, 11:31 p.m. UTC 
From: Asahi Lina <lina@asahilina.net>

Some traits exposed by the kernel crate may not be intended to be
implemented by downstream modules. Add a Sealed trait to allow avoiding
this using the sealed trait pattern.

Signed-off-by: Asahi Lina <lina@asahilina.net>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
---
 rust/kernel/lib.rs | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs
index 5a68b9a5fe03..d83c4c58834f 100644
--- a/rust/kernel/lib.rs
+++ b/rust/kernel/lib.rs
@@ -68,6 +68,11 @@ 
 #[doc(hidden)]
 pub use build_error::build_error;
 
+pub(crate) mod private {
+    #[allow(unreachable_pub)]
+    pub trait Sealed {}
+}
+
 /// Prefix to appear before log messages printed from within the `kernel` crate.
 const __LOG_PREFIX: &[u8] = b"rust_kernel\0";