linux-kernel - [PATCH v2 2/3] x86/sgx: Fix compatibility issue with OPENSSL

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Message-ID: <92282c72-5849-70d0-1553-548130fba2bd@fortanix.com>
Date:   Mon, 12 Apr 2021 11:04:55 +0200
From:   Raoul Strackx <raoul.strackx@...tanix.com>
To:     Jarkko Sakkinen <jarkko@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        linux-sgx@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/3] x86/sgx: Fix compatibility issue with OPENSSL < 1.1.0

The `RSA_get0_key` function only got introduced in OpenSSL 1.1.0. This
makes compilation fail with older versions.

Signed-off-by: Raoul Strackx <raoul.strackx@...tanix.com>
---
 tools/testing/selftests/sgx/sigstruct.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/sgx/sigstruct.c b/tools/testing/selftests/sgx/sigstruct.c
index dee7a3d..aac9cbc 100644
--- a/tools/testing/selftests/sgx/sigstruct.c
+++ b/tools/testing/selftests/sgx/sigstruct.c
@@ -128,8 +128,11 @@ static bool check_crypto_errors(void)
 static inline const BIGNUM *get_modulus(RSA *key)
 {
 	const BIGNUM *n;
-
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
 	RSA_get0_key(key, &n, NULL, NULL);
+#else
+	n = key->n;
+#endif
 	return n;
 }
 
-- 
2.7.4