public static FILE_FS_VOLUME_INFORMATION GetFileVolumeInfo(IntPtr file_handle)
{
IO_STATUS_BLOCK status = new IO_STATUS_BLOCK();
IntPtr ret_buffer = IntPtr.Zero;
try
{
int ret_buffer_len = VOLUME_INFO_BUFFER_LEN;
ret_buffer = Marshal.AllocHGlobal(ret_buffer_len);
uint res = ntApiFS.NtQueryVolumeInformationFile
(file_handle,
ref status,
ret_buffer,
ret_buffer_len,
FS_INFORMATION_CLASS.FileFsVolumeInformation);
NTSTATUS_helper.ThrowOnError(res, status, NTSTATUS_severity.Warning);
FILE_FS_VOLUME_INFORMATION ret = FILE_FS_VOLUME_INFORMATION.FromBuffer(ret_buffer);
return(ret);
}
finally
{
if (ret_buffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(ret_buffer);
}
}
}
public static FILE_FS_VOLUME_INFORMATION FromBuffer(IntPtr buffer)
{
FILE_FS_VOLUME_INFORMATION ret = new FILE_FS_VOLUME_INFORMATION();
ret.VolumeCreationTime = Marshal.ReadInt64(buffer, 0);
ret.VolumeSerialNumber = IOhelper.PtrToUint(buffer, 8);
ret.VolumeLabelLength = Marshal.ReadInt32(buffer, 12);
ret.SupportsObjects = Marshal.ReadByte(buffer, 13);
//pack=4
ret.VolumeLabel = IOhelper.PtrToStringUni(buffer, 18, ret.VolumeLabelLength / 2);
return(ret);
}