linux-kernel - [PATCH v6 1/6] KEYS: Create static version of public_key_verify

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Message-Id: <20230322161634.2233838-2-eric.snowberg@oracle.com>
Date:   Wed, 22 Mar 2023 12:16:29 -0400
From:   Eric Snowberg <eric.snowberg@...cle.com>
To:     jarkko@...nel.org, zohar@...ux.ibm.com, dhowells@...hat.com,
        dwmw2@...radead.org
Cc:     herbert@...dor.apana.org.au, davem@...emloft.net,
        dmitry.kasatkin@...il.com, paul@...l-moore.com, jmorris@...ei.org,
        serge@...lyn.com, pvorel@...e.cz, eric.snowberg@...cle.com,
        kanth.ghatraju@...cle.com, konrad.wilk@...cle.com,
        erpalmer@...ux.vnet.ibm.com, coxu@...hat.com, jlee@...e.com,
        keyrings@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org, linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org
Subject: [PATCH v6 1/6] KEYS: Create static version of public_key_verify_signature

The kernel test robot reports undefined reference to
public_key_verify_signature when CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE is
not defined. Create a static version in this case and return -EINVAL.

Fixes: db6c43bd2132 ("crypto: KEYS: convert public key and digsig asym to the akcipher api")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Eric Snowberg <eric.snowberg@...cle.com>
Reviewed-by: Mimi Zohar <zohar@...ux.ibm.com>
Reviewed-by: Petr Vorel <pvorel@...e.cz>
Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>
---
 include/crypto/public_key.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/crypto/public_key.h b/include/crypto/public_key.h
index 68f7aa2a7e55..6d61695e1cde 100644
--- a/include/crypto/public_key.h
+++ b/include/crypto/public_key.h
@@ -80,7 +80,16 @@ extern int create_signature(struct kernel_pkey_params *, const void *, void *);
 extern int verify_signature(const struct key *,
 			    const struct public_key_signature *);
 
+#if IS_REACHABLE(CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE)
 int public_key_verify_signature(const struct public_key *pkey,
 				const struct public_key_signature *sig);
+#else
+static inline
+int public_key_verify_signature(const struct public_key *pkey,
+				const struct public_key_signature *sig)
+{
+	return -EINVAL;
+}
+#endif
 
 #endif /* _LINUX_PUBLIC_KEY_H */
-- 
2.27.0