From: Alice Ryhl <aliceryhl@google.com>
To: "Miguel Ojeda" <ojeda@kernel.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Wedson Almeida Filho" <wedsonaf@gmail.com>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <benno.lossin@proton.me>,
"Andreas Hindborg" <a.hindborg@samsung.com>
Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org,
Alice Ryhl <aliceryhl@google.com>
Subject: [PATCH] rust: add `Module::as_ptr`
Date: Mon, 26 Feb 2024 09:44:02 +0000 [thread overview]
Message-ID: <20240226-module-as-ptr-v1-1-83bc89213113@google.com> (raw)
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>
---
rust/kernel/lib.rs | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs
index be68d5e567b1..1952a0df0a15 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)))]
---
base-commit: e944171070b65521c0513c01c56174ec8fd7d249
change-id: 20240226-module-as-ptr-08300b88525b
Best regards,
--
Alice Ryhl <aliceryhl@google.com>
next reply other threads:[~2024-02-26 9:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-26 9:44 Alice Ryhl [this message]
2024-03-09 13:03 ` [PATCH] rust: add `Module::as_ptr` Benno Lossin
2024-03-13 19:09 ` Trevor Gross
2024-03-29 19:45 ` Miguel Ojeda
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