/**
This code gets the pointer to the next variable header.
@param StoreInfo Pointer to variable store info structure.
@param Variable Pointer to the Variable Header.
@param VariableHeader Pointer to the Variable Header that has consecutive content.
@return A VARIABLE_HEADER* pointer to next variable header.
**/
VARIABLE_HEADER *
GetNextVariablePtr (
IN VARIABLE_STORE_INFO *StoreInfo,
IN VARIABLE_HEADER *Variable,
IN VARIABLE_HEADER *VariableHeader
)
{
EFI_PHYSICAL_ADDRESS TargetAddress;
EFI_PHYSICAL_ADDRESS SpareAddress;
UINTN Value;
Value = (UINTN) GetVariableDataPtr (Variable, VariableHeader, StoreInfo->AuthFlag);
Value += DataSizeOfVariable (VariableHeader, StoreInfo->AuthFlag);
Value += GET_PAD_SIZE (DataSizeOfVariable (VariableHeader, StoreInfo->AuthFlag));
//
// Be careful about pad size for alignment
//
Value = HEADER_ALIGN (Value);
if (StoreInfo->FtwLastWriteData != NULL) {
TargetAddress = StoreInfo->FtwLastWriteData->TargetAddress;
SpareAddress = StoreInfo->FtwLastWriteData->SpareAddress;
if (((UINTN) Variable < (UINTN) TargetAddress) && (Value >= (UINTN) TargetAddress)) {
//
// Next variable is in spare block.
//
Value = (UINTN) SpareAddress + (Value - (UINTN) TargetAddress);
}
}
return (VARIABLE_HEADER *) Value;
}
/**
This code gets the pointer to the variable data.
@param Variable Pointer to the Variable Header.
@return A UINT8* pointer to Variable Data.
**/
UINT8 *
GetVariableDataPtr (
IN VARIABLE_HEADER *Variable
)
{
UINTN Value;
//
// Be careful about pad size for alignment
//
Value = (UINTN) GetVariableNamePtr (Variable);
Value += NameSizeOfVariable (Variable);
Value += GET_PAD_SIZE (NameSizeOfVariable (Variable));
return (UINT8 *) Value;
}
/**
This code gets the pointer to the next variable header.
@param Variable Pointer to the Variable Header.
@return A VARIABLE_HEADER* pointer to next variable header.
**/
VARIABLE_HEADER *
GetNextVariablePtr (
IN VARIABLE_HEADER *Variable
)
{
UINTN Value;
if (!IsValidVariableHeader (Variable)) {
return NULL;
}
Value = (UINTN) GetVariableDataPtr (Variable);
Value += DataSizeOfVariable (Variable);
Value += GET_PAD_SIZE (DataSizeOfVariable (Variable));
//
// Be careful about pad size for alignment
//
return (VARIABLE_HEADER *) HEADER_ALIGN (Value);
}
