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/** @file -- VariableLockRequestToLock.c
Temporary location of the RequestToLock shim code while
projects are moved to VariablePolicy. Should be removed when deprecated.
Copyright (c) Microsoft Corporation.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Uefi.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Protocol/VariableLock.h>
#include <Protocol/VariablePolicy.h>
#include <Library/VariablePolicyLib.h>
#include <Library/VariablePolicyHelperLib.h>
/**
DEPRECATED. THIS IS ONLY HERE AS A CONVENIENCE WHILE PORTING.
Mark a variable that will become read-only after leaving the DXE phase of execution.
Write request coming from SMM environment through EFI_SMM_VARIABLE_PROTOCOL is allowed.
@param[in] This The VARIABLE_LOCK_PROTOCOL instance.
@param[in] VariableName A pointer to the variable name that will be made read-only subsequently.
@param[in] VendorGuid A pointer to the vendor GUID that will be made read-only subsequently.
@retval EFI_SUCCESS The variable specified by the VariableName and the VendorGuid was marked
as pending to be read-only.
@retval EFI_INVALID_PARAMETER VariableName or VendorGuid is NULL.
Or VariableName is an empty string.
@retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has
already been signaled.
@retval EFI_OUT_OF_RESOURCES There is not enough resource to hold the lock request.
**/
EFI_STATUS
EFIAPI
VariableLockRequestToLock (
IN CONST EDKII_VARIABLE_LOCK_PROTOCOL *This,
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid
)
{
EFI_STATUS Status;
VARIABLE_POLICY_ENTRY *NewPolicy;
NewPolicy = NULL;
Status = CreateBasicVariablePolicy( VendorGuid,
VariableName,
VARIABLE_POLICY_NO_MIN_SIZE,
VARIABLE_POLICY_NO_MAX_SIZE,
VARIABLE_POLICY_NO_MUST_ATTR,
VARIABLE_POLICY_NO_CANT_ATTR,
VARIABLE_POLICY_TYPE_LOCK_NOW,
&NewPolicy );
if (!EFI_ERROR( Status )) {
Status = RegisterVariablePolicy( NewPolicy );
}
if (EFI_ERROR( Status )) {
DEBUG(( DEBUG_ERROR, "%a - Failed to lock variable %s! %r\n", __FUNCTION__, VariableName, Status ));
ASSERT_EFI_ERROR( Status );
}
if (NewPolicy != NULL) {
FreePool( NewPolicy );
}
return Status;
}
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