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c0021d31f8
In the MdeModulePkg/VarCheckPolicyLib, the Primary Buffer (CommBuffer) check function has been updated to match the buffer validation behavior. For SMM, the SMM Handlers is to validate the buffer outside MMRAM. For MM, the MM Handlers do not need to validate the buffer if it is the CommBuffer passed from MmCore through the MmiHandler() parameter. Return TRUE directly in this case. Existing code is incorrect for the MM check. This will be fixed in the following patch. There is no function impact. Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Ray Ni <ray.ni@intel.com> Cc: Star Zeng <star.zeng@intel.com> Cc: Hongbin1 Zhang <hongbin1.zhang@intel.com> Cc: Wei6 Xu <wei6.xu@intel.com> Cc: Dun Tan <dun.tan@intel.com> Cc: Yuanhao Xie <yuanhao.xie@intel.com>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/** @file -- VarCheckPolicyLib.h
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This internal header file defines the common interface of constructor for
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VarCheckPolicyLib.
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Copyright (c) 2024, Intel Corporation. All rights reserved.<BR>
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Copyright (c) Microsoft Corporation. All rights reserved.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _VAR_CHECK_POLICY_LIB_H_
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#define _VAR_CHECK_POLICY_LIB_H_
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/**
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Common constructor function of VarCheckPolicyLib to register VarCheck handler
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and SW MMI handlers.
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@retval EFI_SUCCESS The constructor executed correctly.
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**/
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EFI_STATUS
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EFIAPI
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VarCheckPolicyLibCommonConstructor (
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VOID
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);
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/**
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This function is wrapper function to validate the Primary Buffer (CommBuffer).
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@param Buffer The buffer start address to be checked.
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@param Length The buffer length to be checked.
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@retval TRUE This buffer is valid.
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@retval FALSE This buffer is not valid.
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**/
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BOOLEAN
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EFIAPI
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VarCheckPolicyIsPrimaryBufferValid (
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IN EFI_PHYSICAL_ADDRESS Buffer,
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IN UINT64 Length
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);
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#endif // _VAR_CHECK_POLICY_LIB_H_
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