From 94d356c0335f95412575c4fa3954b48722359c8a Mon Sep 17 00:00:00 2001 From: Alice Ryhl Date: Sun, 15 Sep 2024 14:31:31 +0000 Subject: rust: security: add abstraction for secctx 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. This abstraction makes the following assumptions about the C side: * When a call to `security_secid_to_secctx` is successful, it returns a pointer and length. The pointer references a byte string and is valid for reading for that many bytes. * The string may be referenced until `security_release_secctx` is called. * If CONFIG_SECURITY is set, then the three methods mentioned in rust/helpers are available without a helper. (That is, they are not a #define or `static inline`.) Reviewed-by: Benno Lossin Reviewed-by: Martin Rodriguez Reboredo Reviewed-by: Trevor Gross Reviewed-by: Gary Guo Signed-off-by: Alice Ryhl Link: https://lore.kernel.org/r/20240915-alice-file-v10-5-88484f7a3dcf@google.com Acked-by: Paul Moore Reviewed-by: Kees Cook Signed-off-by: Christian Brauner --- rust/kernel/lib.rs | 1 + 1 file changed, 1 insertion(+) (limited to 'rust/kernel/lib.rs') diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs index c537d17c6db9..e088c94a5a14 100644 --- a/rust/kernel/lib.rs +++ b/rust/kernel/lib.rs @@ -47,6 +47,7 @@ pub mod page; pub mod prelude; pub mod print; pub mod rbtree; +pub mod security; mod static_assert; #[doc(hidden)] pub mod std_vendor; -- cgit v1.2.3