355b181f74
https://bugzilla.tianocore.org/show_bug.cgi?id=2522 VariablePolicy is an updated interface to replace VarLock and VarCheckProtocol. Add the VariablePolicyLib library that implements the portable business logic for the VariablePolicy engine. Also add host-based CI test cases for the lib. Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Hao A Wu <hao.a.wu@intel.com> Cc: Liming Gao <liming.gao@intel.com> Cc: Bret Barkelew <brbarkel@microsoft.com> Signed-off-by: Bret Barkelew <brbarkel@microsoft.com> Reviewed-by: Dandan Bi <dandan.bi@intel.com> Acked-by: Jian J Wang <jian.j.wang@intel.com>
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/** @file -- VariablePolicyExtraInitRuntimeDxe.c
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This file contains extra init and deinit routines that register and unregister
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VariableAddressChange callbacks.
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Copyright (c) Microsoft Corporation.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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extern EFI_GET_VARIABLE mGetVariableHelper;
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extern UINT8 *mPolicyTable;
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STATIC BOOLEAN mIsVirtualAddrConverted;
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STATIC EFI_EVENT mVariablePolicyLibVirtualAddressChangeEvent = NULL;
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/**
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For the RuntimeDxe version of this lib, convert internal pointer addresses to virtual addresses.
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@param[in] Event Event whose notification function is being invoked.
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@param[in] Context The pointer to the notification function's context, which
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is implementation-dependent.
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**/
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STATIC
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VOID
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EFIAPI
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VariablePolicyLibVirtualAddressCallback (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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{
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gRT->ConvertPointer (0, (VOID **)&mPolicyTable);
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gRT->ConvertPointer (0, (VOID **)&mGetVariableHelper);
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mIsVirtualAddrConverted = TRUE;
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}
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/**
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An extra init hook that enables the RuntimeDxe library instance to
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register VirtualAddress change callbacks. Among other things.
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@retval EFI_SUCCESS Everything is good. Continue with init.
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@retval Others Uh... don't continue.
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**/
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EFI_STATUS
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VariablePolicyExtraInit (
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VOID
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)
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{
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return gBS->CreateEventEx (EVT_NOTIFY_SIGNAL,
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TPL_NOTIFY,
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VariablePolicyLibVirtualAddressCallback,
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NULL,
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&gEfiEventVirtualAddressChangeGuid,
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&mVariablePolicyLibVirtualAddressChangeEvent);
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}
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/**
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An extra deinit hook that enables the RuntimeDxe library instance to
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register VirtualAddress change callbacks. Among other things.
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@retval EFI_SUCCESS Everything is good. Continue with deinit.
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@retval Others Uh... don't continue.
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**/
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EFI_STATUS
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VariablePolicyExtraDeinit (
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VOID
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)
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{
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EFI_STATUS Status;
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Status = EFI_SUCCESS;
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if (mIsVirtualAddrConverted) {
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Status = gBS->CloseEvent (mVariablePolicyLibVirtualAddressChangeEvent);
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}
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else {
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Status = EFI_SUCCESS;
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}
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return Status;
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}
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