[PATCH 2/3] efi_loader: fix boot_service_capability_min calculation

[Ilias Apalodimas]

Reviewed-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>

On Fri, 3 Sept 2021 at 04:54, Masahisa Kojima
<masahisa.kojima at linaro.org> wrote:
>
> TCG EFI Protocol Specification requires to the input
> ProtocolCapability.Size < size of the EFI_TCG2_BOOT_SERVICE_CAPABILITY
> up to and including the vendor ID field.
> Current implementation does different calculation, let's fix it.
>
> Signed-off-by: Masahisa Kojima <masahisa.kojima at linaro.org>
> ---
>  include/efi_tcg2.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/efi_tcg2.h b/include/efi_tcg2.h
> index b6b958da51..45788d55d5 100644
> --- a/include/efi_tcg2.h
> +++ b/include/efi_tcg2.h
> @@ -127,8 +127,8 @@ struct efi_tcg2_boot_service_capability {
>         efi_tcg_event_algorithm_bitmap active_pcr_banks;
>  };
>
> +/* up to and including the vendor ID(manufacture_id) field */
>  #define boot_service_capability_min \
> -       sizeof(struct efi_tcg2_boot_service_capability) - \
>         offsetof(struct efi_tcg2_boot_service_capability, number_of_pcr_banks)
>
>  #define TCG_EFI_SPEC_ID_EVENT_SIGNATURE_03 "Spec ID Event03"
> --
> 2.17.1
>