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/** @file
Implements NULL authenticated variable services.
Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Library/AuthVariableLib.h>
#include <Library/DebugLib.h>
/**
Initialization for authenticated varibale services.
If this initialization returns error status, other APIs will not work
and expect to be not called then.
@param[in] AuthVarLibContextIn Pointer to input auth variable lib context.
@param[out] AuthVarLibContextOut Pointer to output auth variable lib context.
@retval EFI_SUCCESS Function successfully executed.
@retval EFI_INVALID_PARAMETER If AuthVarLibContextIn == NULL or AuthVarLibContextOut == NULL.
@retval EFI_OUT_OF_RESOURCES Fail to allocate enough resource.
@retval EFI_UNSUPPORTED Unsupported to process authenticated variable.
**/
EFI_STATUS
EFIAPI
AuthVariableLibInitialize (
IN AUTH_VAR_LIB_CONTEXT_IN *AuthVarLibContextIn,
OUT AUTH_VAR_LIB_CONTEXT_OUT *AuthVarLibContextOut
)
{
//
// Do nothing, just return EFI_UNSUPPORTED.
//
return EFI_UNSUPPORTED;
}
/**
Process variable with EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set.
@param[in] VariableName Name of the variable.
@param[in] VendorGuid Variable vendor GUID.
@param[in] Data Data pointer.
@param[in] DataSize Size of Data.
@param[in] Attributes Attribute value of the variable.
@retval EFI_SUCCESS The firmware has successfully stored the variable and its data as
defined by the Attributes.
@retval EFI_INVALID_PARAMETER Invalid parameter.
@retval EFI_WRITE_PROTECTED Variable is write-protected.
@retval EFI_OUT_OF_RESOURCES There is not enough resource.
@retval EFI_SECURITY_VIOLATION The variable is with EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACESS
set, but the AuthInfo does NOT pass the validation
check carried out by the firmware.
@retval EFI_UNSUPPORTED Unsupported to process authenticated variable.
**/
EFI_STATUS
EFIAPI
AuthVariableLibProcessVariable (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
IN VOID *Data,
IN UINTN DataSize,
IN UINT32 Attributes
)
{
ASSERT (FALSE);
return EFI_UNSUPPORTED;
}
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