From d0f0241d8d8b71b3f5fdf0592e6e6b0e44d5d5c0 Mon Sep 17 00:00:00 2001
From: Alice Ryhl <aliceryhl@google.com>
Date: Mon, 26 Feb 2024 09:44:02 +0000
Subject: [PATCH] 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/20231101-rust-binder-v1-2-08ba9197f637@google.com/ [1]
Link: https://lore.kernel.org/all/20240217002717.57507-1-ojeda@kernel.org/ [2]
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Trevor Gross <tmgross@umich.edu>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Link: https://lore.kernel.org/r/20240226-module-as-ptr-v1-1-83bc89213113@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
rust/kernel/lib.rs | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs
index be68d5e567b1a..1952a0df0a153 100644
--- a/rust/kernel/lib.rs
+++ b/rust/kernel/lib.rs
@@ -92,6 +92,13 @@ 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)))]
--
GitLab