private void SetLink(int headOffset, VersionedLink value)
{
if (value == null)
{
throw new Exception("Attempted to set invalid header link");
}
var strm = value.Freeze();
lock (_fslock)
{
_fs.Seek(MAGIC_SIZE + (VersionedLink.ByteSize * headOffset), SeekOrigin.Begin);
strm.CopyTo(_fs);
}
}
public static void InitialiseDb([NotNull] Stream fs)
{
if (!fs.CanWrite)
{
throw new Exception("Tried to initialise a read-only stream");
}
fs.Seek(0, SeekOrigin.Begin);
foreach (var b in HEADER_MAGIC)
{
fs.WriteByte(b);
}
// write disabled links for the three core chains
var indexVersion = new VersionedLink();
var pathLookupVersion = new VersionedLink();
var freeListVersion = new VersionedLink();
indexVersion.Freeze().CopyTo(fs);
pathLookupVersion.Freeze().CopyTo(fs);
freeListVersion.Freeze().CopyTo(fs);
Flush(fs);
}