/// <summary>
/// Sends the FSCTL_GET_NTFS_VOLUME_DATA control code, returning the resuling
/// NTFS_VOLUME_DATA_BUFFER.
/// </summary>
/// <param name="volume">The volume to query.</param>
/// <returns>The NTFS_VOLUME_DATA_BUFFER structure representing the data
/// file system structures for the volume, or null if the data could not be
/// retrieved.</returns>
internal static NativeMethods.NTFS_VOLUME_DATA_BUFFER GetNtfsVolumeData(VolumeInfo volume)
{
using (FileStream stream = volume.Open(FileAccess.Read, FileShare.ReadWrite,
FileOptions.None))
using (SafeFileHandle handle = stream.SafeFileHandle)
{
uint resultSize = 0;
NativeMethods.NTFS_VOLUME_DATA_BUFFER volumeData =
new NativeMethods.NTFS_VOLUME_DATA_BUFFER();
if (NativeMethods.DeviceIoControl(handle,
NativeMethods.FSCTL_GET_NTFS_VOLUME_DATA, IntPtr.Zero, 0, out volumeData,
(uint)Marshal.SizeOf(volumeData), out resultSize, IntPtr.Zero))
{
return(volumeData);
}
throw Win32ErrorCode.GetExceptionForWin32Error(Marshal.GetLastWin32Error());
}
}
internal static NativeMethods.NTFS_VOLUME_DATA_BUFFER GetNtfsVolumeData(VolumeInfo volume)
{
using (SafeFileHandle volumeHandle = NativeMethods.CreateFile(
volume.VolumeId.Remove(volume.VolumeId.Length - 1),
NativeMethods.GENERIC_READ, NativeMethods.FILE_SHARE_READ |
NativeMethods.FILE_SHARE_WRITE, IntPtr.Zero, NativeMethods.OPEN_EXISTING,
0, IntPtr.Zero))
{
uint resultSize = 0;
NativeMethods.NTFS_VOLUME_DATA_BUFFER volumeData =
new NativeMethods.NTFS_VOLUME_DATA_BUFFER();
if (NativeMethods.DeviceIoControl(volumeHandle,
NativeMethods.FSCTL_GET_NTFS_VOLUME_DATA, IntPtr.Zero, 0, out volumeData,
(uint)Marshal.SizeOf(volumeData), out resultSize, IntPtr.Zero))
{
return volumeData;
}
throw Win32ErrorCode.GetExceptionForWin32Error(Marshal.GetLastWin32Error());
}
}
