private UInt64 FrnFromPath(string pszPath)
{
UInt64 FRN = 0;
IntPtr hPath = PInvokeWin32.CreateFile(pszPath,
0,
PInvokeWin32.FILE_SHARE_READ | PInvokeWin32.FILE_SHARE_WRITE,
IntPtr.Zero,
PInvokeWin32.OPEN_EXISTING,
PInvokeWin32.FILE_FLAG_BACKUP_SEMANTICS,
IntPtr.Zero);
if (hPath.ToInt32() != PInvokeWin32.INVALID_HANDLE_VALUE)
{
PInvokeWin32.BY_HANDLE_FILE_INFORMATION fi = new PInvokeWin32.BY_HANDLE_FILE_INFORMATION();
bool bRtn = PInvokeWin32.GetFileInformationByHandle(hPath, out fi);
if (bRtn)
{
UInt64 fileIndexHigh = (UInt64)fi.FileIndexHigh;
FRN = (fileIndexHigh << 32) | fi.FileIndexLow;
}
else
{
throw new IOException("GetFileInformationbyHandle() returned invalid handle",
new Win32Exception(Marshal.GetLastWin32Error()));
}
PInvokeWin32.CloseHandle(hPath);
}
else
{
throw new IOException("Unable to get frn entry", new Win32Exception(Marshal.GetLastWin32Error()));
}
return(FRN);
}
static public UInt64 InfoFromPath(string pszPath)
{
UInt64 ms = 0;
IntPtr hPath = PInvokeWin32.CreateFile(pszPath,
0,
PInvokeWin32.FILE_SHARE_READ | PInvokeWin32.FILE_SHARE_WRITE,
IntPtr.Zero,
PInvokeWin32.OPEN_EXISTING,
PInvokeWin32.FILE_FLAG_BACKUP_SEMANTICS,
IntPtr.Zero);
if (hPath.ToInt32() != PInvokeWin32.INVALID_HANDLE_VALUE)
{
PInvokeWin32.BY_HANDLE_FILE_INFORMATION fi = new PInvokeWin32.BY_HANDLE_FILE_INFORMATION();
bool bRtn = PInvokeWin32.GetFileInformationByHandle(hPath, out fi);
if (bRtn)
{
//System.DateTime dt = System.DateTime.FromFileTime((((long)fi.LastWriteTime.DateTimeHigh) << 32) | fi.LastWriteTime.DateTimeLow);
//ms = (Int32)fi.LastWriteTime.DateTimeLow;
UInt64 timeHigh = (UInt64)fi.LastWriteTime.DateTimeHigh;
timeHigh = (timeHigh << 32) | fi.LastWriteTime.DateTimeLow;
ms = timeHigh;
}
}
PInvokeWin32.CloseHandle(hPath);
return(ms);
}
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()));
}
}