private void GetRootHandle()
{
string vol = string.Concat("\\\\.\\", _drive);
_changeJournalRootHandle = PInvokeWin32.CreateFile(vol,
PInvokeWin32.GENERIC_READ | PInvokeWin32.GENERIC_WRITE,
PInvokeWin32.FILE_SHARE_READ | PInvokeWin32.FILE_SHARE_WRITE,
IntPtr.Zero,
PInvokeWin32.OPEN_EXISTING,
0,
IntPtr.Zero);
if (_changeJournalRootHandle.ToInt32() == PInvokeWin32.INVALID_HANDLE_VALUE)
{
throw new IOException("CreateFile() returned invalid handle",
new Win32Exception(Marshal.GetLastWin32Error()));
}
}
private void GetRootFrnEntry()
{
string driveRoot = string.Concat("\\\\.\\", _drive);
driveRoot = string.Concat(driveRoot, Path.DirectorySeparatorChar);
IntPtr hRoot = PInvokeWin32.CreateFile(driveRoot,
0,
PInvokeWin32.FILE_SHARE_READ | PInvokeWin32.FILE_SHARE_WRITE,
IntPtr.Zero,
PInvokeWin32.OPEN_EXISTING,
PInvokeWin32.FILE_FLAG_BACKUP_SEMANTICS,
IntPtr.Zero);
if (hRoot.ToInt32() != PInvokeWin32.INVALID_HANDLE_VALUE)
{
PInvokeWin32.BY_HANDLE_FILE_INFORMATION fi = new PInvokeWin32.BY_HANDLE_FILE_INFORMATION();
bool bRtn = PInvokeWin32.GetFileInformationByHandle(hRoot, out fi);
if (bRtn)
{
UInt64 fileIndexHigh = (UInt64)fi.FileIndexHigh;
UInt64 indexRoot = (fileIndexHigh << 32) | fi.FileIndexLow;
FileNameAndParentFrn f = new FileNameAndParentFrn(driveRoot, 0);
_directories.Add(indexRoot, f);
}
else
{
throw new IOException("GetFileInformationbyHandle() returned invalid handle",
new Win32Exception(Marshal.GetLastWin32Error()));
}
PInvokeWin32.CloseHandle(hRoot);
}
else
{
throw new IOException("Unable to get root frn entry", new Win32Exception(Marshal.GetLastWin32Error()));
}
}