MdeModulePkg/VariablePolicy: Add more granular variable policy querying

Introduces two new APIs to EDKII_VARIABLE_POLICY_PROTOCOL:
  1. GetVariablePolicyInfo()
  2. GetLockOnVariableStateVariablePolicyInfo()

These allow a caller to retrieve policy information associated with
a UEFI variable given the variable name and vendor GUID.

GetVariablePolicyInfo() - Returns the variable policy applied to the
UEFI variable. If the variable policy is applied toward an individual
UEFI variable, that name can optionally be returned.

GetLockOnVariableStateVariablePolicyInfo() - Returns the Lock on
Variable State policy applied to the UEFI variable. If the Lock on
Variable State policy is applied to a specific variable name, that
name can optionally be returned.

These functions can be useful for a variety of purposes such as
auditing, testing, and functional flows.

Also fixed some variable name typos in code touched by the changes.

Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Message-Id: <20231030203112.736-2-mikuback@linux.microsoft.com>
This commit is contained in:
Michael Kubacki
2023-10-30 16:31:09 -04:00
committed by mergify[bot]
parent 8e74629070
commit f3b2187d55
8 changed files with 1062 additions and 46 deletions

View File

@@ -33,7 +33,9 @@ EDKII_VARIABLE_POLICY_PROTOCOL mVariablePolicyProtocol = {
ProtocolIsVariablePolicyEnabled,
RegisterVariablePolicy,
DumpVariablePolicy,
LockVariablePolicy
LockVariablePolicy,
GetVariablePolicyInfo,
GetLockOnVariableStateVariablePolicyInfo
};
EDKII_VAR_CHECK_PROTOCOL mVarCheck = {
VarCheckRegisterSetVariableCheckHandler,