[PATCH 5/5] uefirtmisc: add unsupported checking with RuntimeServicesSupported variable

[Colin Ian King]

On 06/11/2019 09:45, Ivan Hu wrote:
> UEFI spec 2.8 introduced the variable RuntimeServicesSupported, which is
> Bitmask of which calls are implemented by the firmware during runtime services.
> Add tests for checking GetNextHighMonotonicCount services with
> RuntimeServicesSupported variable. Currently, won't test with
> QueryCapsuleCapabilities becasue QueryCapsuleCapabilities may return
> unsupported due to the update flag of firmware behavior unsupported, not
> runtime service unsupported.
> 
> Signed-off-by: Ivan Hu <ivan.hu at canonical.com>
> ---
>  src/uefi/uefirtmisc/uefirtmisc.c | 55 ++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 55 insertions(+)
> 
> diff --git a/src/uefi/uefirtmisc/uefirtmisc.c b/src/uefi/uefirtmisc/uefirtmisc.c
> index b3fdf5f..4cda778 100644
> --- a/src/uefi/uefirtmisc/uefirtmisc.c
> +++ b/src/uefi/uefirtmisc/uefirtmisc.c
> @@ -254,11 +254,66 @@ static int uefirtmisc_test3(fwts_framework *fw)
>  	return FWTS_ERROR;
>  }
>  
> +static int uefirtmisc_test4(fwts_framework *fw)
> +{
> +	uint64_t status;
> +	bool getvar_supported;
> +	uint32_t var_runtimeservicessupported;
> +
> +	struct efi_getnexthighmonotoniccount getnexthighmonotoniccount;
> +	uint32_t highcount;
> +
> +	fwts_uefi_rt_support_status_get(fd, &getvar_supported,
> +			&var_runtimeservicessupported);
> +	if (!getvar_supported || (var_runtimeservicessupported == 0xFFFF)) {
> +		fwts_skipped(fw, "Cannot get the RuntimeServicesSupported "
> +				"variable, maybe the runtime service "
> +				"GetVariable is not supported or "
> +				"RuntimeServicesSupported not provided by "
> +				"firmware.");
> +		return FWTS_SKIP;
> +	}
> +
> +	getnexthighmonotoniccount.HighCount = &highcount;
> +	getnexthighmonotoniccount.status = &status;
> +	status = ~0ULL;
> +	ioctl(fd, EFI_RUNTIME_GET_NEXTHIGHMONOTONICCOUNT, &getnexthighmonotoniccount);

Please check for ioctl < 0 error returns

> +	if (status == EFI_UNSUPPORTED) {
> +		if ((var_runtimeservicessupported & EFI_RT_SUPPORTED_GET_NEXT_HIGH_MONOTONIC_COUNT)
> +			|| (var_runtimeservicessupported == 0)) {
> +			fwts_failed(fw, LOG_LEVEL_HIGH,
> +				"UEFIRuntimeGetNextHighMonotonicCount",
> +				"Get the GetNextHighMonotonicCount runtime "
> +				"service supported via RuntimeServicesSupported "
> +				"variable. But actually is not supported by "
> +				"firmware.");
> +		} else {
> +			fwts_passed(fw, "UEFI GetNextHighMonotonicCount runtime "
> +				"service supported status test passed.");
> +		}
> +	} else {
> +		if ((var_runtimeservicessupported & EFI_RT_SUPPORTED_GET_NEXT_HIGH_MONOTONIC_COUNT)
> +			|| (var_runtimeservicessupported == 0)) {
> +			fwts_passed(fw, "UEFI GetNextHighMonotonicCount runtime "
> +				"service supported status test passed.");
> +		} else {
> +			fwts_failed(fw, LOG_LEVEL_HIGH,
> +				"UEFIRuntimeGetNextHighMonotonicCount",
> +				"Get the GetNextHighMonotonicCount runtime "
> +				"service unsupported via RuntimeServicesSupported "
> +				"variable. But actually is supported by firmware.");
> +		}
> +	}
> +
> +	return FWTS_OK;
> +}
> +
>  
>  static fwts_framework_minor_test uefirtmisc_tests[] = {
>  	{ uefirtmisc_test1, "Test for UEFI miscellaneous runtime service interfaces." },
>  	{ uefirtmisc_test2, "Stress test for UEFI miscellaneous runtime service interfaces." },
>  	{ uefirtmisc_test3, "Test GetNextHighMonotonicCount with invalid NULL parameter." },
> +	{ uefirtmisc_test4, "Test UEFI miscellaneous runtime services supported status." },
>  	{ NULL, NULL }
>  };
>  
>