linux-kernel - [PATCH] efi: Add new variable attributes

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Message-ID: <tencent_D07D67AD5F6EA840BEC68C82226A18B40A0A@qq.com>
Date:   Tue, 12 Sep 2023 17:44:20 +0800
From:   Rong Tao <rtoax@...mail.com>
To:     ardb@...nel.org, rongtao@...tc.cn, rtoax@...mail.com
Cc:     linux-efi@...r.kernel.org (open list:EXTENSIBLE FIRMWARE INTERFACE
        (EFI)), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] efi: Add new variable attributes

From: Rong Tao <rongtao@...tc.cn>

More recent versions of the UEFI spec have added a new attribute for
variables [0]. Add it.

[0] https://uefi.org/specs/UEFI/2.10/08_Services_Runtime_Services.html#getvariable

Signed-off-by: Rong Tao <rongtao@...tc.cn>
---
 include/linux/efi.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/linux/efi.h b/include/linux/efi.h
index 80b21d1c6eaf..f15835873b31 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -928,6 +928,7 @@ extern int efi_status_to_err(efi_status_t status);
 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
 #define EFI_VARIABLE_APPEND_WRITE	0x0000000000000040
+#define EFI_VARIABLE_ENHANCED_AUTHENTICATED_ACCESS	0x0000000000000080
 
 #define EFI_VARIABLE_MASK	(EFI_VARIABLE_NON_VOLATILE | \
 				EFI_VARIABLE_BOOTSERVICE_ACCESS | \
@@ -935,7 +936,8 @@ extern int efi_status_to_err(efi_status_t status);
 				EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
 				EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
 				EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
-				EFI_VARIABLE_APPEND_WRITE)
+				EFI_VARIABLE_APPEND_WRITE | \
+				EFI_VARIABLE_ENHANCED_AUTHENTICATED_ACCESS)
 /*
  * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
  * not including trailing NUL
-- 
2.41.0