Re: [PATCH 2/9] vtpmmgr: Print error code to aid debugging

["Daniel P. Smith" <dpsmith.dev@gmail.com>]

On 5/4/21 8:48 AM, Jason Andryuk wrote:
> tpm_get_error_name returns "Unknown Error Code" when an error string
> is not defined.  In that case, we should print the Error Code so it can
> be looked up offline.  tpm_get_error_name returns a const string, so
> just have the two callers always print the error code so it is always
> available.
> 
> Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
> ---

Reviewed-by: Daniel P. Smith <dpsmith@apertussolutions.com>

>  stubdom/vtpmmgr/tpm.c  | 2 +-
>  stubdom/vtpmmgr/tpm2.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/stubdom/vtpmmgr/tpm.c b/stubdom/vtpmmgr/tpm.c
> index 779cddd64e..83b2bc16b2 100644
> --- a/stubdom/vtpmmgr/tpm.c
> +++ b/stubdom/vtpmmgr/tpm.c
> @@ -109,7 +109,7 @@
>  			UINT32 rsp_status; \
>  			UNPACK_OUT(TPM_RSP_HEADER, &rsp_tag, &rsp_len, &rsp_status); \
>  			if (rsp_status != TPM_SUCCESS) { \
> -				vtpmlogerror(VTPM_LOG_TPM, "Failed with return code %s\n", tpm_get_error_name(rsp_status)); \
> +				vtpmlogerror(VTPM_LOG_TPM, "Failed with return code %s (%x)\n", tpm_get_error_name(rsp_status), rsp_status); \
>  				status = rsp_status; \
>  				goto abort_egress; \
>  			} \
> diff --git a/stubdom/vtpmmgr/tpm2.c b/stubdom/vtpmmgr/tpm2.c
> index c9f1016ab5..655e6d164c 100644
> --- a/stubdom/vtpmmgr/tpm2.c
> +++ b/stubdom/vtpmmgr/tpm2.c
> @@ -126,7 +126,7 @@
>      ptr = unpack_TPM_RSP_HEADER(ptr, \
>            &(tag), &(paramSize), &(status));\
>      if ((status) != TPM_SUCCESS){ \
> -        vtpmlogerror(VTPM_LOG_TPM, "Failed with return code %s\n", tpm_get_error_name(status));\
> +        vtpmlogerror(VTPM_LOG_TPM, "Failed with return code %s (%x)\n", tpm_get_error_name(status), (status));\
>          goto abort_egress;\
>      }\
>  } while(0)
>