From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: Andreas Rammhold <andreas@rammhold.de>,
James Bottomley <jejb@linux.ibm.com>,
Jarkko Sakkinen <jarkko@kernel.org>,
Mimi Zohar <zohar@linux.ibm.com>,
David Howells <dhowells@redhat.com>,
James Morris <jmorris@namei.org>,
"Serge E. Hallyn" <serge@hallyn.com>,
Sumit Garg <sumit.garg@linaro.org>
Cc: linux-integrity@vger.kernel.org, keyrings@vger.kernel.org,
linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] KEYS: trusted: Fix trusted key backends when building as module
Date: Fri, 30 Jul 2021 08:14:18 +0200 [thread overview]
Message-ID: <c8a0e8a1-96ee-3288-ce5b-7f9d77f719c1@pengutronix.de> (raw)
In-Reply-To: <20210730012822.3460913-1-andreas@rammhold.de>
On 30.07.21 03:28, Andreas Rammhold wrote:
> Before this commit the kernel could end up with no trusted key sources
> even though both of the currently supported backends (TPM and TEE) were
> compiled as modules. This manifested in the trusted key type not being
> registered at all.
>
> When checking if a CONFIG_… preprocessor variable is defined we only
> test for the builtin (=y) case and not the module (=m) case. By using
> the IS_REACHABLE() macro we do test for both cases.
>
> Fixes: 5d0682be3189 ("KEYS: trusted: Add generic trusted keys framework")
> Signed-off-by: Andreas Rammhold <andreas@rammhold.de>
> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
>
> ---
>
> v3:
> * Fixed patch formatting
>
> v2:
> * Fixed commit message
> * Switched from IS_DEFINED() to IS_REACHABLE()
>
> security/keys/trusted-keys/trusted_core.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/security/keys/trusted-keys/trusted_core.c b/security/keys/trusted-keys/trusted_core.c
> index d5c891d8d353..5b35f1b87644 100644
> --- a/security/keys/trusted-keys/trusted_core.c
> +++ b/security/keys/trusted-keys/trusted_core.c
> @@ -27,10 +27,10 @@ module_param_named(source, trusted_key_source, charp, 0);
> MODULE_PARM_DESC(source, "Select trusted keys source (tpm or tee)");
>
> static const struct trusted_key_source trusted_key_sources[] = {
> -#if defined(CONFIG_TCG_TPM)
> +#if IS_REACHABLE(CONFIG_TCG_TPM)
> { "tpm", &trusted_key_tpm_ops },
> #endif
> -#if defined(CONFIG_TEE)
> +#if IS_REACHABLE(CONFIG_TEE)
> { "tee", &trusted_key_tee_ops },
> #endif
> };
>
--
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next prev parent reply other threads:[~2021-07-30 6:14 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-30 1:28 [PATCH v3] KEYS: trusted: Fix trusted key backends when building as module Andreas Rammhold
2021-07-30 4:54 ` Sumit Garg
2021-07-30 6:14 ` Ahmad Fatoum [this message]
2021-09-13 7:47 ` Ahmad Fatoum
2021-09-27 8:51 ` Andreas Rammhold
2021-09-27 11:27 ` Mimi Zohar
2021-09-27 20:08 ` Andreas Rammhold
2021-09-27 20:33 ` Mimi Zohar
2021-09-27 20:55 ` Andreas Rammhold
2021-09-27 21:31 ` Mimi Zohar
2021-10-02 21:47 ` Andreas Rammhold
2021-10-11 10:19 ` Ahmad Fatoum
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