private void GetRootHandle(string drive)
{
string vol = string.Concat("\\\\.\\", drive);
_changeJournalRootHandle = NativeWrapper.CreateFile(vol,
NativeWrapper.GENERIC_READ | NativeWrapper.GENERIC_WRITE,
NativeWrapper.FILE_SHARE_READ | NativeWrapper.FILE_SHARE_WRITE,
IntPtr.Zero,
NativeWrapper.OPEN_EXISTING,
0,
IntPtr.Zero);
if (_changeJournalRootHandle.ToInt32() == NativeWrapper.INVALID_HANDLE_VALUE)
{
throw new IOException("CreateFile() returned invalid handle",
new Win32Exception(Marshal.GetLastWin32Error()));
}
}
private void GetRootFrnEntry(string drive)
{
string driveRoot = string.Concat("\\\\.\\", drive);
driveRoot = string.Concat(driveRoot, Path.DirectorySeparatorChar);
IntPtr hRoot = NativeWrapper.CreateFile(driveRoot,
0,
NativeWrapper.FILE_SHARE_READ | NativeWrapper.FILE_SHARE_WRITE,
IntPtr.Zero,
NativeWrapper.OPEN_EXISTING,
NativeWrapper.FILE_FLAG_BACKUP_SEMANTICS,
IntPtr.Zero);
if (hRoot.ToInt32() != NativeWrapper.INVALID_HANDLE_VALUE)
{
BY_HANDLE_FILE_INFORMATION fi = new BY_HANDLE_FILE_INFORMATION();
bool bRtn = NativeWrapper.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()));
}
NativeWrapper.CloseHandle(hRoot);
}
else
{
throw new IOException("Unable to get root frn entry", new Win32Exception(Marshal.GetLastWin32Error()));
}
}