Re: [Qemu-devel] [PATCH v2 1/2] crypto: fix building complaint

["Daniel P. Berrange" <berrange@redhat.com>]

On Mon, Sep 05, 2016 at 12:02:42PM +0000, Gonglei (Arei) wrote:
> 
> > -----Original Message-----
> > From: Daniel P. Berrange [mailto:berrange@redhat.com]
> > Sent: Monday, September 05, 2016 7:04 PM
> > To: Gonglei (Arei)
> > Cc: qemu-devel@nongnu.org
> > Subject: Re: [PATCH v2 1/2] crypto: fix building complaint
> > 
> > On Mon, Sep 05, 2016 at 10:50:54AM +0000, Gonglei (Arei) wrote:
> > >
> > >
> > > > -----Original Message-----
> > > > From: Daniel P. Berrange [mailto:berrange@redhat.com]
> > > > Sent: Monday, September 05, 2016 6:15 PM
> > > > To: Gonglei (Arei)
> > > > Cc: qemu-devel@nongnu.org; dmitry@daynix.com
> > > > Subject: Re: [PATCH v2 1/2] crypto: fix building complaint
> > > >
> > > > On Tue, Aug 30, 2016 at 12:10:52PM +0800, Gonglei wrote:
> > > > > gnutls commit 846753877d renamed LIBGNUTLS_VERSION_NUMBER to
> > > > GNUTLS_VERSION_NUMBER.
> > > > > If using gnutls before that verion, we'll get the below warning:
> > > > > crypto/tlscredsx509.c:618:5: warning: "GNUTLS_VERSION_NUMBER" is
> > not
> > > > defined
> > > > >
> > > > > Signed-off-by: Gonglei <arei.gonglei@huawei.com>
> > > > > ---
> > > > >  crypto/tlscredsx509.c | 2 +-
> > > > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > > >
> > > > > diff --git a/crypto/tlscredsx509.c b/crypto/tlscredsx509.c
> > > > > index 520d34d..f2fd80f 100644
> > > > > --- a/crypto/tlscredsx509.c
> > > > > +++ b/crypto/tlscredsx509.c
> > > > > @@ -615,7 +615,7 @@
> > qcrypto_tls_creds_x509_load(QCryptoTLSCredsX509
> > > > *creds,
> > > > >      }
> > > > >
> > > > >      if (cert != NULL && key != NULL) {
> > > > > -#if GNUTLS_VERSION_NUMBER >= 0x030111
> > > > > +#if defined(GNUTLS_VERSION_NUMBER) &&
> > > > GNUTLS_VERSION_NUMBER >= 0x030111
> > > > >          char *password = NULL;
> > > > >          if (creds->passwordid) {
> > > > >              password =
> > > > qcrypto_secret_lookup_as_utf8(creds->passwordid,
> > > >
> > > > Other places in this file still use LIBGNUTLS_VERSION_NUMBER, which is
> > > > good, because gnutls 3.x still defines LIBGNUTLS_VERSION_NUMBER for
> > > > back compat.
> > > >
> > > You mean using LIBGNUTLS_VERSION_NUMBER directly here? That's ok.
> > 
> > Yes,
> > 
> > > > The tests/test-crypto-tlscredsx509.c file also needs a similar fix.
> > > >
> > > Sorry?
> > 
> > It also uses the GNUTLS_VERSION_NUMBER constant instead of
> > LIBGNUTLS_VERSION_NUMBER
> > 
> 
> What about the below patch?
> 
> diff --git a/crypto/init.c b/crypto/init.c
> index 1e564d9..16e099b 100644
> --- a/crypto/init.c
> +++ b/crypto/init.c
> @@ -59,8 +59,7 @@
>  
>  #if (defined(CONFIG_GCRYPT) &&                  \
>       (!defined(CONFIG_GNUTLS) ||                \
> -      !defined(GNUTLS_VERSION_NUMBER) ||       \
> -      (GNUTLS_VERSION_NUMBER < 0x020c00)) &&    \
> +     (LIBGNUTLS_VERSION_NUMBER < 0x020c00)) &&    \
>       (!defined(GCRYPT_VERSION_NUMBER) ||        \
>        (GCRYPT_VERSION_NUMBER < 0x010600)))
>  #define QCRYPTO_INIT_GCRYPT_THREADS
> diff --git a/crypto/tlscredsx509.c b/crypto/tlscredsx509.c
> index 520d34d..50eb54f 100644
> --- a/crypto/tlscredsx509.c
> +++ b/crypto/tlscredsx509.c
> @@ -615,7 +615,7 @@ qcrypto_tls_creds_x509_load(QCryptoTLSCredsX509 *creds,
>      }
>  
>      if (cert != NULL && key != NULL) {
> -#if GNUTLS_VERSION_NUMBER >= 0x030111
> +#if LIBGNUTLS_VERSION_NUMBER >= 0x030111
>          char *password = NULL;
>          if (creds->passwordid) {
>              password = qcrypto_secret_lookup_as_utf8(creds->passwordid,
> @@ -630,7 +630,7 @@ qcrypto_tls_creds_x509_load(QCryptoTLSCredsX509 *creds,
>                                                      password,
>                                                      0);
>          g_free(password);
> -#else /* GNUTLS_VERSION_NUMBER < 0x030111 */
> +#else /* LIBGNUTLS_VERSION_NUMBER < 0x030111 */
>          if (creds->passwordid) {
>              error_setg(errp, "PKCS8 decryption requires GNUTLS >= 3.1.11");
>              goto cleanup;
> @@ -638,7 +638,7 @@ qcrypto_tls_creds_x509_load(QCryptoTLSCredsX509 *creds,
>          ret = gnutls_certificate_set_x509_key_file(creds->data,
>                                                     cert, key,
>                                                     GNUTLS_X509_FMT_PEM);
> -#endif /* GNUTLS_VERSION_NUMBER < 0x030111 */
> +#endif
>          if (ret < 0) {
>              error_setg(errp, "Cannot load certificate '%s' & key '%s': %s",
>                         cert, key, gnutls_strerror(ret));
> diff --git a/tests/crypto-tls-x509-helpers.h b/tests/crypto-tls-x509-helpers.h
> index 356b49c..a8faa92 100644
> --- a/tests/crypto-tls-x509-helpers.h
> +++ b/tests/crypto-tls-x509-helpers.h
> @@ -26,7 +26,6 @@
>  
>  #if !(defined WIN32) && \
>      defined(CONFIG_TASN1) && \
> -    defined(LIBGNUTLS_VERSION_NUMBER) && \
>      (LIBGNUTLS_VERSION_NUMBER >= 0x020600)
>  # define QCRYPTO_HAVE_TLS_TEST_SUPPORT
>  #endif

Yep, that looks reasonable.

Regards,
Daniel
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