VeraCrypt
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-rw-r--r--src/Driver/Ntdriver.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/Driver/Ntdriver.c b/src/Driver/Ntdriver.c
index 1b6bab01..148f88b8 100644
--- a/src/Driver/Ntdriver.c
+++ b/src/Driver/Ntdriver.c
@@ -1446,7 +1446,12 @@ NTSTATUS ProcessVolumeDeviceControlIrp (PDEVICE_OBJECT DeviceObject, PEXTENSION
case IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS:
Dump ("ProcessVolumeDeviceControlIrp (IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS)\n");
// Vista's, Windows 8.1 and later filesystem defragmenter fails if IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS does not succeed.
- if (ValidateIOBufferSize(Irp, sizeof(VOLUME_DISK_EXTENTS), ValidateOutput))
+ if (!AllowWindowsDefrag || !Extension->bRawDevice) // We don't support defragmentation for file-hosted volumes
+ {
+ Irp->IoStatus.Status = STATUS_INVALID_DEVICE_REQUEST;
+ Irp->IoStatus.Information = 0;
+ }
+ else if (ValidateIOBufferSize(Irp, sizeof(VOLUME_DISK_EXTENTS), ValidateOutput))
{
VOLUME_DISK_EXTENTS* extents = (VOLUME_DISK_EXTENTS*)Irp->AssociatedIrp.SystemBuffer;