private HierarchicalIntegrityVerificationStream InitIvfcStream(IntegrityCheckLevel integrityCheckLevel)
{
IvfcHeader ivfc = Header.Ivfc;
const int ivfcLevels = 5;
var initInfo = new IntegrityVerificationInfo[ivfcLevels];
initInfo[0] = new IntegrityVerificationInfo
{
Data = Header.MasterHash,
BlockSize = 0,
Type = IntegrityStreamType.Save
};
for (int i = 1; i < ivfcLevels; i++)
{
IvfcLevelHeader level = ivfc.LevelHeaders[i - 1];
Stream data = i == ivfcLevels - 1
? JournalStreamSource.CreateStream()
: MetaRemapStorage.OpenStream(level.LogicalOffset, level.HashDataSize);
initInfo[i] = new IntegrityVerificationInfo
{
Data = data,
BlockSize = 1 << level.BlockSizePower,
Salt = new HMACSHA256(Encoding.ASCII.GetBytes(SaltSources[i - 1])).ComputeHash(ivfc.SaltSource),
Type = IntegrityStreamType.Save
};
}
return(new HierarchicalIntegrityVerificationStream(initInfo, integrityCheckLevel));
}
public void FsTrim()
{
MetaRemapStorage.FsTrim();
DataRemapStorage.FsTrim();
DuplexStorage.FsTrim();
JournalStorage.FsTrim();
CoreDataIvfcStorage.FsTrim();
FatIvfcStorage?.FsTrim();
SaveDataFileSystemCore.FsTrim();
int unusedHeaderOffset = IsFirstHeaderInUse ? 0x4000 : 0;
BaseStorage.Slice(unusedHeaderOffset, 0x4000).Fill(TrimFillValue);
}
private HierarchicalIntegrityVerificationStorage InitJournalIvfcStorage(IntegrityCheckLevel integrityCheckLevel)
{
const int ivfcLevels = 5;
IvfcHeader ivfc = Header.Ivfc;
var levels = new List <IStorage> {
Header.DataIvfcMaster
};
for (int i = 0; i < ivfcLevels - 2; i++)
{
IvfcLevelHeader level = ivfc.LevelHeaders[i];
levels.Add(MetaRemapStorage.Slice(level.Offset, level.Size));
}
IvfcLevelHeader dataLevel = ivfc.LevelHeaders[ivfcLevels - 2];
levels.Add(JournalStorage.Slice(dataLevel.Offset, dataLevel.Size));
return(new HierarchicalIntegrityVerificationStorage(ivfc, levels, IntegrityStorageType.Save, integrityCheckLevel, LeaveOpen));
}