Re: kselftest and cargo

[Jarkko Sakkinen <jarkko@kernel.org>]

On Tue, Sep 16, 2025 at 04:48:22PM +0300, Jarkko Sakkinen wrote:
> Hi,
> 
> The pre-existing kselftest for TPM2 is derived works of my earlier Python
> based rudimentary TPM2 stack called 'tpm2-scripts'.
> 
> In order to get more coverage and more mainintainable and extensible test
> suite I'd like to eventually rewrite the tests with bash and tpm2sh, which
> is a TPM2 cli written with Rust and based on my new TPM2 stack [1] [2].
> 
> Given linux-rust work, would it be acceptable to require cargo to install
> a runner for kselftest? I'm finishing off now 0.11 version of the tool,
> which will take some time (versions before that are honestly quite bad,
> don't try them) but after that this would be something I'd like to
> put together.
> 
> NOTE: while tpm2-protocol itself is Apache/MIT, tpm2sh is GPL3 licensed
> command-line program (for what it is worth).

Also tpm2-protocol is dependencyless, no crazy corporate TPM2
shenanigans and daemons involved etc., meaning that overall tpm2sh is
quite self-contained and good fit but 8 KSLOC not really to be imported
(the size comes from built-in TPM2 emulator, policy expression language
and advanced import functionality that directly converts PKCS#8 to TPM2
Key ASN.1 DEr/PEM all super useful for all sorts of testing purposes).


> 
> [1] https://github.com/puavo-org/tpm2sh
> [2] https://git.kernel.org/pub/scm/linux/kernel/git/jarkko/tpm2-protocol.git/about/
> 
> BR, Jarkko
> 
>