AuthVariableLibNull.c File Reference

#include <Library/AuthVariableLib.h>
#include <Library/DebugLib.h>

Go to the source code of this file.

Functions
EFI_STATUS EFIAPI	AuthVariableLibInitialize (IN AUTH_VAR_LIB_CONTEXT_IN *AuthVarLibContextIn, OUT AUTH_VAR_LIB_CONTEXT_OUT *AuthVarLibContextOut)
EFI_STATUS EFIAPI	AuthVariableLibProcessVariable (IN CHAR16 *VariableName, IN EFI_GUID *VendorGuid, IN VOID *Data, IN UINTN DataSize, IN UINT32 Attributes)

Detailed Description

Implements NULL authenticated variable services.

Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file AuthVariableLibNull.c.

Function Documentation

AuthVariableLibInitialize()

EFI_STATUS EFIAPI AuthVariableLibInitialize	(	IN AUTH_VAR_LIB_CONTEXT_IN *	AuthVarLibContextIn,
		OUT AUTH_VAR_LIB_CONTEXT_OUT *	AuthVarLibContextOut
	)

Initialization for authenticated varibale services. If this initialization returns error status, other APIs will not work and expect to be not called then.

Parameters

[in]	AuthVarLibContextIn	Pointer to input auth variable lib context.
[out]	AuthVarLibContextOut	Pointer to output auth variable lib context.

Return values

EFI_SUCCESS	Function successfully executed.
EFI_INVALID_PARAMETER	If AuthVarLibContextIn == NULL or AuthVarLibContextOut == NULL.
EFI_OUT_OF_RESOURCES	Fail to allocate enough resource.
EFI_UNSUPPORTED	Unsupported to process authenticated variable.

Definition at line 28 of file AuthVariableLibNull.c.

AuthVariableLibProcessVariable()

EFI_STATUS EFIAPI AuthVariableLibProcessVariable	(	IN CHAR16 *	VariableName,
		IN EFI_GUID *	VendorGuid,
		IN VOID *	Data,
		IN UINTN	DataSize,
		IN UINT32	Attributes
	)

Process variable with EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set.

Parameters

[in]	VariableName	Name of the variable.
[in]	VendorGuid	Variable vendor GUID.
[in]	Data	Data pointer.
[in]	DataSize	Size of Data.
[in]	Attributes	Attribute value of the variable.

Return values

EFI_SUCCESS	The firmware has successfully stored the variable and its data as defined by the Attributes.
EFI_INVALID_PARAMETER	Invalid parameter.
EFI_WRITE_PROTECTED	Variable is write-protected.
EFI_OUT_OF_RESOURCES	There is not enough resource.
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.
EFI_UNSUPPORTED	Unsupported to process authenticated variable.

Definition at line 61 of file AuthVariableLibNull.c.