linux-kernel - Re: [PATCH v2] Add missing attributes to EFI variable attribute print out from sysfs

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Date:	Mon, 10 Sep 2012 13:55:49 -0400
From:	Mike Waychison <mikew@...gle.com>
To:	Khalid Aziz <khalid.aziz@...com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Tony Luck <tony.luck@...el.com>,
	Matthew Garrett <mjg@...hat.com>,
	Kees Cook <keescook@...omium.org>,
	"gong.chen@...ux.intel.com" <gong.chen@...ux.intel.com>
Subject: Re: [PATCH v2] Add missing attributes to EFI variable attribute print
 out from sysfs

Greg,

Can you please pick this patch up in one of your trees?

Thanks!

Mike Waychison

On Fri, Jul 13, 2012 at 1:42 PM, Khalid Aziz <khalid.aziz@...com> wrote:
> Some of the EFI variable attributes are missing from print out from
> /sys/firmware/efi/vars/*/attributes. This patch adds those in. It also
> updates code to use pre-defined constants for masking current value
> of attributes.
>
> Signed-off-by: Khalid Aziz <khalid.aziz@...com>
> Cc: stable@...r.kernel.org
> ---
>  drivers/firmware/efivars.c |   17 ++++++++++++++---
>  1 file changed, 14 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
> index 47408e8..d10c987 100644
> --- a/drivers/firmware/efivars.c
> +++ b/drivers/firmware/efivars.c
> @@ -435,12 +435,23 @@ efivar_attr_read(struct efivar_entry *entry, char *buf)
>         if (status != EFI_SUCCESS)
>                 return -EIO;
>
> -       if (var->Attributes & 0x1)
> +       if (var->Attributes & EFI_VARIABLE_NON_VOLATILE)
>                 str += sprintf(str, "EFI_VARIABLE_NON_VOLATILE\n");
> -       if (var->Attributes & 0x2)
> +       if (var->Attributes & EFI_VARIABLE_BOOTSERVICE_ACCESS)
>                 str += sprintf(str, "EFI_VARIABLE_BOOTSERVICE_ACCESS\n");
> -       if (var->Attributes & 0x4)
> +       if (var->Attributes & EFI_VARIABLE_RUNTIME_ACCESS)
>                 str += sprintf(str, "EFI_VARIABLE_RUNTIME_ACCESS\n");
> +       if (var->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD)
> +               str += sprintf(str, "EFI_VARIABLE_HARDWARE_ERROR_RECORD\n");
> +       if (var->Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)
> +               str += sprintf(str,
> +                       "EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS\n");
> +       if (var->Attributes &
> +                       EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS)
> +               str += sprintf(str,
> +                       "EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS\n");
> +       if (var->Attributes & EFI_VARIABLE_APPEND_WRITE)
> +               str += sprintf(str, "EFI_VARIABLE_APPEND_WRITE\n");
>         return str - buf;
>  }
>
> --
> 1.7.9.5
>
> --
> Khalid Aziz
> khalid.aziz@...com
--
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