Re: [PULL 10/11] crypto: push error reporting into TLS session I/O APIs

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

On Mon, Aug 12, 2024 at 05:38:41PM +0200, Thomas Huth wrote:
> On 24/07/2024 11.47, Daniel P. Berrangé wrote:
> > The current TLS session I/O APIs just return a synthetic errno
> > value on error, which has been translated from a gnutls error
> > value. This looses a large amount of valuable information that
> > distinguishes different scenarios.
> > 
> > Pushing population of the "Error *errp" object into the TLS
> > session I/O APIs gives more detailed error information.
> > 
> > Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> > Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
> > ---
> 
>  Hi Daniel!
> 
> iotest 233 is failing for me with -raw now, and bisection
> points to this commit. Output is:
> 
> --- .../qemu/tests/qemu-iotests/233.out
> +++ /tmp/qemu/tests/qemu-iotests/scratch/raw-file-233/233.out.bad
> @@ -69,8 +69,8 @@
>  1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> 
>  == check TLS with authorization ==
> -qemu-img: Could not open 'driver=nbd,host=127.0.0.1,port=PORT,tls-creds=tls0': Failed to read option reply: Cannot read from TLS channel: Software caused connection abort
> -qemu-img: Could not open 'driver=nbd,host=127.0.0.1,port=PORT,tls-creds=tls0': Failed to read option reply: Cannot read from TLS channel: Software caused connection abort
> +qemu-img: Could not open 'driver=nbd,host=127.0.0.1,port=PORT,tls-creds=tls0': Failed to read option reply: Cannot read from TLS channel: The TLS connection was non-properly terminated.
> +qemu-img: Could not open 'driver=nbd,host=127.0.0.1,port=PORT,tls-creds=tls0': Failed to read option reply: Cannot read from TLS channel: The TLS connection was non-properly terminated.

This is an expected change. Previously squashed the real GNUTLS error
into ECONNABORTED:

-        case GNUTLS_E_PREMATURE_TERMINATION:
-            errno = ECONNABORTED;
-            break;


now we report the original gnutls root cause.

IOW, we need to update the expected output files.


With regards,
Daniel
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