linux-kernel - [ 017/147] firmware: Add missing attributes to EFI variable attribute print out from sysfs

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Message-Id: <20121014143536.070813274@decadent.org.uk>
Date:	Sun, 14 Oct 2012 15:35:50 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Khalid Aziz <khalid.aziz@...com>,
	Kees Cook <keescook@...omium.org>,
	Matthew Garrett <mjg@...hat.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [ 017/147] firmware: Add missing attributes to EFI variable attribute print out
 from sysfs

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Khalid Aziz <khalid.aziz@...com>

commit 7083909023bbe29b3176e92d2d089def1aa7aa1e upstream.

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>
Reviewed-by: Kees Cook <keescook@...omium.org>
Acked-by: Matthew Garrett <mjg@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 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;
 }
 


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