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/** @file
Variable check definitions.
Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _VARIABLE_CHECK_H_
#define _VARIABLE_CHECK_H_
#include <Uefi/UefiSpec.h>
typedef struct _EDKII_VAR_CHECK_PROTOCOL EDKII_VAR_CHECK_PROTOCOL;
#define EDKII_VAR_CHECK_PROTOCOL_GUID { \
0xaf23b340, 0x97b4, 0x4685, { 0x8d, 0x4f, 0xa3, 0xf2, 0x81, 0x69, 0xb2, 0x1d } \
};
typedef EFI_SET_VARIABLE VAR_CHECK_SET_VARIABLE_CHECK_HANDLER;
/**
Register SetVariable check handler.
Variable driver will call the handler to do check before
really setting the variable into variable storage.
@param[in] Handler Pointer to the check handler.
@retval EFI_SUCCESS The SetVariable check handler was registered successfully.
@retval EFI_INVALID_PARAMETER Handler is NULL.
@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 for the SetVariable check handler register request.
@retval EFI_UNSUPPORTED This interface is not implemented.
For example, it is unsupported in VarCheck protocol if both VarCheck and SmmVarCheck protocols are present.
**/
typedef
EFI_STATUS
(EFIAPI * EDKII_VAR_CHECK_REGISTER_SET_VARIABLE_CHECK_HANDLER) (
IN VAR_CHECK_SET_VARIABLE_CHECK_HANDLER Handler
);
#define VAR_CHECK_VARIABLE_PROPERTY_REVISION 0x0001
//
// 1. Set by VariableLock PROTOCOL
// 2. Set by VarCheck PROTOCOL
//
// If set, other fields for check will be ignored.
//
#define VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY BIT0
typedef struct {
UINT16 Revision;
UINT16 Property;
UINT32 Attributes;
UINTN MinSize;
UINTN MaxSize;
} VAR_CHECK_VARIABLE_PROPERTY;
/**
Variable property set.
Variable driver will do check according to the VariableProperty before
really setting the variable into variable storage.
@param[in] Name Pointer to the variable name.
@param[in] Guid Pointer to the vendor GUID.
@param[in] VariableProperty Pointer to the input variable property.
@retval EFI_SUCCESS The property of variable specified by the Name and Guid was set successfully.
@retval EFI_INVALID_PARAMETER Name, Guid or VariableProperty is NULL, or Name is an empty string,
or the fields of VariableProperty are not valid.
@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 for the variable property set request.
**/
typedef
EFI_STATUS
(EFIAPI * EDKII_VAR_CHECK_VARIABLE_PROPERTY_SET) (
IN CHAR16 *Name,
IN EFI_GUID *Guid,
IN VAR_CHECK_VARIABLE_PROPERTY *VariableProperty
);
/**
Variable property get.
@param[in] Name Pointer to the variable name.
@param[in] Guid Pointer to the vendor GUID.
@param[out] VariableProperty Pointer to the output variable property.
@retval EFI_SUCCESS The property of variable specified by the Name and Guid was got successfully.
@retval EFI_INVALID_PARAMETER Name, Guid or VariableProperty is NULL, or Name is an empty string.
@retval EFI_NOT_FOUND The property of variable specified by the Name and Guid was not found.
**/
typedef
EFI_STATUS
(EFIAPI * EDKII_VAR_CHECK_VARIABLE_PROPERTY_GET) (
IN CHAR16 *Name,
IN EFI_GUID *Guid,
OUT VAR_CHECK_VARIABLE_PROPERTY *VariableProperty
);
struct _EDKII_VAR_CHECK_PROTOCOL {
EDKII_VAR_CHECK_REGISTER_SET_VARIABLE_CHECK_HANDLER RegisterSetVariableCheckHandler;
EDKII_VAR_CHECK_VARIABLE_PROPERTY_SET VariablePropertySet;
EDKII_VAR_CHECK_VARIABLE_PROPERTY_GET VariablePropertyGet;
};
extern EFI_GUID gEdkiiVarCheckProtocolGuid;
#endif
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