linux-kernel - Re: [PATCH v8 5/8] rust: security: add abstraction for secctx

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Message-ID: <20240807155719.005d9e74@eugeo>
Date: Wed, 7 Aug 2024 15:57:19 +0100
From: Gary Guo <gary@...yguo.net>
To: Alice Ryhl <aliceryhl@...gle.com>
Cc: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>,
 Wedson Almeida Filho <wedsonaf@...il.com>, Boqun Feng
 <boqun.feng@...il.com>, "Björn Roy Baron"
 <bjorn3_gh@...tonmail.com>, Benno Lossin <benno.lossin@...ton.me>, Andreas
 Hindborg <a.hindborg@...sung.com>, Peter Zijlstra <peterz@...radead.org>,
 Alexander Viro <viro@...iv.linux.org.uk>, Christian Brauner
 <brauner@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 "Arve Hjønnevåg" <arve@...roid.com>, Todd Kjos
 <tkjos@...roid.com>, Martijn Coenen <maco@...roid.com>, Joel Fernandes
 <joel@...lfernandes.org>, Carlos Llamas <cmllamas@...gle.com>, Suren
 Baghdasaryan <surenb@...gle.com>, Dan Williams <dan.j.williams@...el.com>,
 Matthew Wilcox <willy@...radead.org>, Thomas Gleixner <tglx@...utronix.de>,
 Daniel Xu <dxu@...uu.xyz>, Martin Rodriguez Reboredo <yakoyoku@...il.com>,
 Trevor Gross <tmgross@...ch.edu>, linux-kernel@...r.kernel.org,
 rust-for-linux@...r.kernel.org, linux-fsdevel@...r.kernel.org, Kees Cook
 <kees@...nel.org>
Subject: Re: [PATCH v8 5/8] rust: security: add abstraction for secctx

On Thu, 25 Jul 2024 14:27:38 +0000
Alice Ryhl <aliceryhl@...gle.com> wrote:

> Add an abstraction for viewing the string representation of a security
> context.
> 
> This is needed by Rust Binder because it has a feature where a process
> can view the string representation of the security context for incoming
> transactions. The process can use that to authenticate incoming
> transactions, and since the feature is provided by the kernel, the
> process can trust that the security context is legitimate.
> 
> Reviewed-by: Benno Lossin <benno.lossin@...ton.me>
> Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@...il.com>
> Reviewed-by: Trevor Gross <tmgross@...ch.edu>
> Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>

Reviewed-by: Gary Guo <gary@...yguo.net>

> ---
>  rust/bindings/bindings_helper.h |  1 +
>  rust/helpers.c                  | 21 ++++++++++++
>  rust/kernel/cred.rs             |  8 +++++
>  rust/kernel/lib.rs              |  1 +
>  rust/kernel/security.rs         | 74 +++++++++++++++++++++++++++++++++++++++++
>  5 files changed, 105 insertions(+)