private static CookedDataRuns CookRuns(NtfsAttribute attribute)
{
CookedDataRuns result = new CookedDataRuns();
foreach (NonResidentAttributeRecord record in attribute.Records)
{
if (record.StartVcn != result.NextVirtualCluster)
{
throw new IOException("Invalid NTFS attribute - non-contiguous data runs");
}
result.Append(record.DataRuns, record);
}
return(result);
}
public override void ExpandToClusters(long numVirtualClusters, NonResidentAttributeRecord extent, bool allocate)
{
long totalVirtualClusters = _cookedRuns.NextVirtualCluster;
if (totalVirtualClusters < numVirtualClusters)
{
NonResidentAttributeRecord realExtent = extent;
if (realExtent == null)
{
realExtent = _cookedRuns.Last.AttributeExtent;
}
DataRun newRun = new DataRun(0, numVirtualClusters - totalVirtualClusters, true);
realExtent.DataRuns.Add(newRun);
_cookedRuns.Append(newRun, extent);
realExtent.LastVcn = numVirtualClusters - 1;
}
if (allocate)
{
AllocateClusters(totalVirtualClusters, (int)(numVirtualClusters - totalVirtualClusters));
}
}