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MdePkg: Add DECLARE_LENGTH opcode of dependency expression 

To avoid messy parsing of the Depex section of a Capsule, it would
be a lot easier for everyone involved if we preceded the Capsule Depex
Section with a length declaration. It provides simple bounds checking
to avoid having to parse the op-codes, but in the case of a malformed
depex being parsed, avoid other issues which can be messy.

REF: UEFI spec 2.10 Table 23.4

Signed-off-by: Yi Li <yi1.li@intel.com>

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Reviewed-by: Wei6 Xu <wei6.xu@intel.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
This commit is contained in:
Yi Li 2023-12-19 11:11:43 +08:00 committed by mergify[bot]
parent 9d3fe85fcc
commit 00bf6890a9
1 changed files with 15 additions and 14 deletions
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MdePkg/Include/Protocol/FirmwareManagement.h
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@ -44,6 +44,7 @@ typedef struct _EFI_FIRMWARE_MANAGEMENT_PROTOCOL EFI_FIRMWARE_MANAGEMENT_PROTOCO
#define EFI_FMP_DEP_LT 0x0B
#define EFI_FMP_DEP_LTE 0x0C
#define EFI_FMP_DEP_END 0x0D
#define EFI_FMP_DEP_DECLARE_LENGTH 0x0E
///
/// Image Attribute - Dependency