Public/VeraCrypt
1
0
Fork 0
mirror of https://github.com/veracrypt/VeraCrypt.git synced 2025-11-11 11:08:02 -06:00
Code Activity

Windows: Implement workaround on Windows 10 to make VeraCrypt encrypted disks visible to Windows defragmenter

Browse Source
This commit is contained in:
Mounir IDRASSI
2018-08-18 11:13:20 +02:00
parent 2fea18c3f5
commit 20889d4553
3 changed files with 32 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
src/Driver/Ntdriver.c
View File

@@ -1263,8 +1263,10 @@ NTSTATUS ProcessVolumeDeviceControlIrp (PDEVICE_OBJECT DeviceObject, PEXTENSION
case IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS:
Dump ("ProcessVolumeDeviceControlIrp (IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS)\n");
// Vista's filesystem defragmenter fails if IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS does not succeed.
if (!(OsMajorVersion == 6 && OsMinorVersion == 0))
// Vista's and Windows 10 filesystem defragmenter fails if IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS does not succeed.
if (!(OsMajorVersion == 6 && OsMinorVersion == 0)
&& !(OsMajorVersion == 10 && EnableExtendedIoctlSupport && Extension->bRawDevice)
)
{
Irp->IoStatus.Status = STATUS_INVALID_DEVICE_REQUEST;
Irp->IoStatus.Information = 0;
@@ -1272,10 +1274,24 @@ NTSTATUS ProcessVolumeDeviceControlIrp (PDEVICE_OBJECT DeviceObject, PEXTENSION
else if (ValidateIOBufferSize (Irp, sizeof (VOLUME_DISK_EXTENTS), ValidateOutput))
{
VOLUME_DISK_EXTENTS *extents = (VOLUME_DISK_EXTENTS *) Irp->AssociatedIrp.SystemBuffer;
// No extent data can be returned as this is not a physical drive.
memset (extents, 0, sizeof (*extents));
extents->NumberOfDiskExtents = 0;
if (OsMajorVersion == 10)
{
// Windows 10 filesystem defragmenter works only if we report an extent with a real disk number
// So in the case of a VeraCrypt disk based volume, we use the disk number
// of the underlaying physical disk and we report a single extent
extents->NumberOfDiskExtents = 1;
extents->Extents[0].DiskNumber = Extension->DeviceNumber;
extents->Extents[0].StartingOffset.QuadPart = Extension->BytesPerSector;
extents->Extents[0].ExtentLength.QuadPart = Extension->DiskLength;
}
else
{
// Vista: No extent data can be returned as this is not a physical drive.
memset (extents, 0, sizeof (*extents));
extents->NumberOfDiskExtents = 0;
}
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof (*extents);