public FileSystem(uint sectors, uint minIndexNodes)
{
//Ensure index nodes use whole sectors
minIndexNodes += 8 - minIndexNodes % 8;
Header = new Header()
{
Sectors = sectors,
IndexNodes = minIndexNodes,
VersionMajor = 1,
VersionMinor = 0
};
IndexNodes = new IndexNode[minIndexNodes];
var dataSectors = Header.Sectors - Header.IndexSectors - 1;
var bitmapSectors = 0U;
while (bitmapSectors * (512 * 8) < dataSectors)
{
bitmapSectors++;
dataSectors--;
}
Bitmap = new SectorBitmap(dataSectors);
Header.BitmapLength = (uint)Bitmap.Bitmap.LongLength;
Header.BitmapSectors = Bitmap.BitmapSectors;
DataSectors = new DataSector[dataSectors];
}
public uint InsertDataSector(DataSector data)
{
var index = Array.FindIndex(DataSectors, x => x == null);
if (index == -1)
{
throw new InvalidOperationException("Exausted data capacity");
}
DataSectors[index] = data;
return((uint)index);
}