/// <summary>
/// Dismounts all volumes mounted by the TestCrypt driver.
/// </summary>
public static void DismountAll()
{
IntPtr mountListPtr = IntPtr.Zero;
IntPtr umountPtr = IntPtr.Zero;
try
{
// open/load the TestCrypt driver first
SafeFileHandle hDriver = OpenDriver();
// retrieve a list of all volumes currently mounted by the TestCrypt driver
uint result = 0;
mountListPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(MOUNT_LIST_STRUCT)));
if (DeviceApi.DeviceIoControl(hDriver, TC_IOCTL_GET_MOUNTED_VOLUMES, mountListPtr, (uint)Marshal.SizeOf(typeof(MOUNT_LIST_STRUCT)),
mountListPtr, (uint)Marshal.SizeOf(typeof(MOUNT_LIST_STRUCT)), ref result, IntPtr.Zero))
{
MOUNT_LIST_STRUCT mountList = (MOUNT_LIST_STRUCT)Marshal.PtrToStructure(mountListPtr, typeof(MOUNT_LIST_STRUCT));
if (mountList.ulMountedDrives != 0)
{
// inform the operating system about pending device removal
BroadcastDeviceChange(DBT_DEVICEREMOVEPENDING, 0, mountList.ulMountedDrives);
UMOUNT_STRUCT umount = new UMOUNT_STRUCT();
umount.ignoreOpenFiles = true;
umountPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(UMOUNT_STRUCT)));
Marshal.StructureToPtr(umount, umountPtr, true);
if (DeviceApi.DeviceIoControl(hDriver, TC_IOCTL_DISMOUNT_ALL_VOLUMES, umountPtr, (uint)Marshal.SizeOf(typeof(UMOUNT_STRUCT)),
umountPtr, (uint)Marshal.SizeOf(typeof(UMOUNT_STRUCT)), ref result, IntPtr.Zero))
{
umount = (UMOUNT_STRUCT)Marshal.PtrToStructure(umountPtr, typeof(UMOUNT_STRUCT));
if (umount.nReturnCode != 0)
{
throw new TrueCryptException(TrueCryptException.ExceptionCause.DriverIoControlFailed, umount.nReturnCode, "TC_IOCTL_DISMOUNT_ALL_VOLUMES", null);
}
else
{
// inform the operating system about completed device removal
BroadcastDeviceChange(DBT_DEVICEREMOVECOMPLETE, 0, mountList.ulMountedDrives);
}
}
else
{
Win32Exception ex = new Win32Exception();
throw new TrueCryptException(TrueCryptException.ExceptionCause.DriverIoControlFailed, ex.ErrorCode, "TC_IOCTL_DISMOUNT_ALL_VOLUMES", ex.Message);
}
}
else
{
// there is currently no volume mounted by the TestCrypt driver
}
}
else
{
Win32Exception ex = new Win32Exception();
throw new TrueCryptException(TrueCryptException.ExceptionCause.DriverIoControlFailed, ex.ErrorCode, "TC_IOCTL_GET_MOUNTED_VOLUMES", ex.Message);
}
hDriver.Close();
}
finally
{
if (mountListPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(mountListPtr);
}
if (umountPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(umountPtr);
}
}
}
/// <summary>
/// Dismounts all volumes mounted by the TestCrypt driver.
/// </summary>
public static void DismountAll()
{
IntPtr mountListPtr = IntPtr.Zero;
IntPtr umountPtr = IntPtr.Zero;
try
{
// open/load the TestCrypt driver first
SafeFileHandle hDriver = OpenDriver();
// retrieve a list of all volumes currently mounted by the TestCrypt driver
uint result = 0;
mountListPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(MOUNT_LIST_STRUCT)));
if (DeviceApi.DeviceIoControl(hDriver, TC_IOCTL_GET_MOUNTED_VOLUMES, mountListPtr, (uint)Marshal.SizeOf(typeof(MOUNT_LIST_STRUCT)),
mountListPtr, (uint)Marshal.SizeOf(typeof(MOUNT_LIST_STRUCT)), ref result, IntPtr.Zero))
{
MOUNT_LIST_STRUCT mountList = (MOUNT_LIST_STRUCT)Marshal.PtrToStructure(mountListPtr, typeof(MOUNT_LIST_STRUCT));
if (mountList.ulMountedDrives != 0)
{
// inform the operating system about pending device removal
BroadcastDeviceChange(DBT_DEVICEREMOVEPENDING, 0, mountList.ulMountedDrives);
UMOUNT_STRUCT umount = new UMOUNT_STRUCT();
umount.ignoreOpenFiles = true;
umountPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(UMOUNT_STRUCT)));
Marshal.StructureToPtr(umount, umountPtr, true);
if (DeviceApi.DeviceIoControl(hDriver, TC_IOCTL_DISMOUNT_ALL_VOLUMES, umountPtr, (uint)Marshal.SizeOf(typeof(UMOUNT_STRUCT)),
umountPtr, (uint)Marshal.SizeOf(typeof(UMOUNT_STRUCT)), ref result, IntPtr.Zero))
{
umount = (UMOUNT_STRUCT)Marshal.PtrToStructure(umountPtr, typeof(UMOUNT_STRUCT));
if (umount.nReturnCode != 0)
{
throw new TrueCryptException(TrueCryptException.ExceptionCause.DriverIoControlFailed, umount.nReturnCode, "TC_IOCTL_DISMOUNT_ALL_VOLUMES", null);
}
else
{
// inform the operating system about completed device removal
BroadcastDeviceChange(DBT_DEVICEREMOVECOMPLETE, 0, mountList.ulMountedDrives);
}
}
else
{
Win32Exception ex = new Win32Exception();
throw new TrueCryptException(TrueCryptException.ExceptionCause.DriverIoControlFailed, ex.ErrorCode, "TC_IOCTL_DISMOUNT_ALL_VOLUMES", ex.Message);
}
}
else
{
// there is currently no volume mounted by the TestCrypt driver
}
}
else
{
Win32Exception ex = new Win32Exception();
throw new TrueCryptException(TrueCryptException.ExceptionCause.DriverIoControlFailed, ex.ErrorCode, "TC_IOCTL_GET_MOUNTED_VOLUMES", ex.Message);
}
hDriver.Close();
}
finally
{
if (mountListPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(mountListPtr);
}
if (umountPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(umountPtr);
}
}
}
