private void ExtendFile(long numberOfAdditionalBytes)
{
long footerOffset = m_file.Size - VHDFooter.Length;
m_file.Extend(numberOfAdditionalBytes);
byte[] footerBytes = m_vhdFooter.GetBytes();
if (m_vhdFooter.DiskType != VirtualHardDiskType.Fixed)
{
m_file.WriteSectors(0, footerBytes);
}
m_file.WriteSectors((footerOffset + numberOfAdditionalBytes) / BytesPerDiskSector, footerBytes);
}
public override void Extend(long numberOfAdditionalBytes)
{
if (numberOfAdditionalBytes % this.BytesPerSector > 0)
{
throw new ArgumentException("numberOfAdditionalBytes must be a multiple of BytesPerSector");
}
if (m_vhdFooter.DiskType == VirtualHardDiskType.Fixed)
{
long length = this.Size; // does not include the footer
m_file.Extend(numberOfAdditionalBytes);
m_vhdFooter.CurrentSize += (ulong)numberOfAdditionalBytes;
byte[] footerBytes = m_vhdFooter.GetBytes();
m_file.WriteSectors((length + numberOfAdditionalBytes) / this.BytesPerSector, footerBytes);
}
else
{
throw new NotImplementedException();
}
}