linux-kernel - Re: [PATCH v12 1/4] rust: types: Add Ownable/Owned types

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <cc28d048-5e0f-4f0e-b0f2-1b9e240f639b@kernel.org>
Date: Thu, 30 Oct 2025 16:41:54 +0100
From: Danilo Krummrich <dakr@...nel.org>
To: Oliver Mangold <oliver.mangold@...me>
Cc: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>,
 Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
 Björn Roy Baron <bjorn3_gh@...tonmail.com>,
 Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>,
 Trevor Gross <tmgross@...ch.edu>, Benno Lossin <lossin@...nel.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Dave Ertman <david.m.ertman@...el.com>, Ira Weiny <ira.weiny@...el.com>,
 Leon Romanovsky <leon@...nel.org>, "Rafael J. Wysocki" <rafael@...nel.org>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Alexander Viro <viro@...iv.linux.org.uk>,
 Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
 Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
 "Liam R. Howlett" <Liam.Howlett@...cle.com>,
 Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
 Stephen Boyd <sboyd@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
 Krzysztof Wilczyński <kwilczynski@...nel.org>,
 Asahi Lina <lina+kernel@...hilina.net>, rust-for-linux@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, linux-fsdevel@...r.kernel.org,
 linux-mm@...ck.org, linux-pm@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH v12 1/4] rust: types: Add Ownable/Owned types

On 10/1/25 11:03 AM, Oliver Mangold wrote:
> From: Asahi Lina <lina+kernel@...hilina.net>
> 
> By analogy to `AlwaysRefCounted` and `ARef`, an `Ownable` type is a
> (typically C FFI) type that *may* be owned by Rust, but need not be. Unlike
> `AlwaysRefCounted`, this mechanism expects the reference to be unique
> within Rust, and does not allow cloning.
> 
> Conceptually, this is similar to a `KBox<T>`, except that it delegates
> resource management to the `T` instead of using a generic allocator.
> 
> [ om:
>   - Split code into separate file and `pub use` it from types.rs.
>   - Make from_raw() and into_raw() public.
>   - Remove OwnableMut, and make DerefMut dependent on Unpin instead.
>   - Usage example/doctest for Ownable/Owned.
>   - Fixes to documentation and commit message.
> ]
> 
> Link: https://lore.kernel.org/all/20250202-rust-page-v1-1-e3170d7fe55e@asahilina.net/
> Signed-off-by: Asahi Lina <lina+kernel@...hilina.net>
> Co-developed-by: Oliver Mangold <oliver.mangold@...me>
> Signed-off-by: Oliver Mangold <oliver.mangold@...me>
> Reviewed-by: Boqun Feng <boqun.feng@...il.com>
I think this patch was originally sent by Abdiel and Boqun [1]; we should
probably take this into account. :)

[1]
https://lore.kernel.org/rust-for-linux/20241022224832.1505432-2-abdiel.janulgue@gmail.com/