rust: add Module::as_ptr

This allows you to get a raw pointer to THIS_MODULE for use in unsafe code. The Rust Binder RFC uses it when defining fops for the binderfs component [1]. This doesn't really need to go in now - it could go in together with Rust Binder like how it is sent in the Rust Binder RFC. However, the upcoming 1.77.0 release of the Rust compiler introduces a new warning, and applying this patch now will silence that warning. That allows us to avoid adding the #[allow(dead_code)] annotation seen in [2]. Link: https://lore.kernel.org/rust-for-linux/[email protected]/ [1] Link: https://lore.kernel.org/all/[email protected]/ [2] Signed-off-by: Alice Ryhl <[email protected]>
Rust-for-Linux · Mar 1, 2024 · 62f3e40 · 62f3e40
1 parent a88ecd3
commit 62f3e40
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs
@@ -112,6 +112,13 @@ impl ThisModule {
     pub const unsafe fn from_ptr(ptr: *mut bindings::module) -> ThisModule {
         ThisModule(ptr)
     }
+
+    /// Access the raw pointer for this module.
+    ///
+    /// It is up to the user to use it correctly.
+    pub const fn as_ptr(&self) -> *mut bindings::module {
+        self.0
+    }
 }
 
 #[cfg(not(any(testlib, test)))]