VeraCrypt
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authorMounir IDRASSI <mounir.idrassi@idrix.fr>2015-05-03 06:43:10 (GMT)
committerMounir IDRASSI <mounir.idrassi@idrix.fr>2015-05-03 13:47:29 (GMT)
commit7d52dda67c370de7d615678b61920c822eeb7142 (patch)
tree72157105bee4c38b6ae13ce9b6bd52474d1a3b4d /src/Driver
parent0f2d32f01145f82fa83806e08ddde6cdce8a496d (diff)
downloadVeraCrypt-7d52dda67c370de7d615678b61920c822eeb7142.zip
VeraCrypt-7d52dda67c370de7d615678b61920c822eeb7142.tar.gz
Windows Driver: Implement querying physical sector size of veraCrypt volume through IOCTL_STORAGE_QUERY_PROPERTY
Diffstat (limited to 'src/Driver')
-rw-r--r--src/Driver/Ntdriver.c40
-rw-r--r--src/Driver/Ntdriver.h4
-rw-r--r--src/Driver/Ntvol.c35
-rw-r--r--src/Driver/Ntvol.h1
4 files changed, 74 insertions, 6 deletions
diff --git a/src/Driver/Ntdriver.c b/src/Driver/Ntdriver.c
index 86f3d9e..402301c 100644
--- a/src/Driver/Ntdriver.c
+++ b/src/Driver/Ntdriver.c
@@ -120,8 +120,8 @@ NTSTATUS DriverAddDevice (PDRIVER_OBJECT driverObject, PDEVICE_OBJECT pdo)
if (VolumeClassFilterRegistered && BootArgsValid && BootArgs.HiddenSystemPartitionStart != 0)
{
- PWSTR interfaceLinks;
- if (NT_SUCCESS (IoGetDeviceInterfaces (&GUID_DEVINTERFACE_VOLUME, pdo, DEVICE_INTERFACE_INCLUDE_NONACTIVE, &interfaceLinks)))
+ PWSTR interfaceLinks = NULL;
+ if (NT_SUCCESS (IoGetDeviceInterfaces (&GUID_DEVINTERFACE_VOLUME, pdo, DEVICE_INTERFACE_INCLUDE_NONACTIVE, &interfaceLinks)) && interfaceLinks)
{
if (interfaceLinks[0] != UNICODE_NULL)
{
@@ -628,6 +628,42 @@ NTSTATUS ProcessVolumeDeviceControlIrp (PDEVICE_OBJECT DeviceObject, PEXTENSION
}
break;
+ case IOCTL_STORAGE_QUERY_PROPERTY:
+ if (ValidateIOBufferSize (Irp, sizeof (STORAGE_PROPERTY_QUERY), ValidateInput))
+ {
+ PSTORAGE_PROPERTY_QUERY pStoragePropQuery = (PSTORAGE_PROPERTY_QUERY) Irp->AssociatedIrp.SystemBuffer;
+ STORAGE_QUERY_TYPE type = pStoragePropQuery->QueryType;
+
+ if (type == PropertyExistsQuery)
+ {
+ if (pStoragePropQuery->PropertyId == StorageAccessAlignmentProperty)
+ {
+ Irp->IoStatus.Status = STATUS_SUCCESS;
+ Irp->IoStatus.Information = 0;
+ }
+ }
+ else if (type == PropertyStandardQuery)
+ {
+ if (pStoragePropQuery->PropertyId == StorageAccessAlignmentProperty)
+ {
+ if (ValidateIOBufferSize (Irp, sizeof (STORAGE_ACCESS_ALIGNMENT_DESCRIPTOR), ValidateOutput))
+ {
+ PSTORAGE_ACCESS_ALIGNMENT_DESCRIPTOR outputBuffer = (PSTORAGE_ACCESS_ALIGNMENT_DESCRIPTOR) Irp->AssociatedIrp.SystemBuffer;
+
+ outputBuffer->Version = sizeof(STORAGE_ACCESS_ALIGNMENT_DESCRIPTOR);
+ outputBuffer->Size = sizeof(STORAGE_ACCESS_ALIGNMENT_DESCRIPTOR);
+ outputBuffer->BytesPerLogicalSector = Extension->BytesPerSector;
+ outputBuffer->BytesPerPhysicalSector = Extension->HostBytesPerPhysicalSector;
+ outputBuffer->BytesOffsetForSectorAlignment = Extension->BytesOffsetForSectorAlignment;
+ Irp->IoStatus.Status = STATUS_SUCCESS;
+ Irp->IoStatus.Information = sizeof (STORAGE_ACCESS_ALIGNMENT_DESCRIPTOR);
+ }
+ }
+ }
+ }
+
+ break;
+
case IOCTL_DISK_GET_PARTITION_INFO:
if (ValidateIOBufferSize (Irp, sizeof (PARTITION_INFORMATION), ValidateOutput))
{
diff --git a/src/Driver/Ntdriver.h b/src/Driver/Ntdriver.h
index 90ceb6b..91cc6ee 100644
--- a/src/Driver/Ntdriver.h
+++ b/src/Driver/Ntdriver.h
@@ -58,8 +58,10 @@ typedef struct EXTENSION
ULONG SectorsPerTrack; /* Partition info */
ULONG BytesPerSector; /* Partition info */
UCHAR PartitionType; /* Partition info */
-
+
uint32 HostBytesPerSector;
+ uint32 HostBytesPerPhysicalSector;
+ ULONG BytesOffsetForSectorAlignment;
KEVENT keVolumeEvent; /* Event structure used when setting up a device */
diff --git a/src/Driver/Ntvol.c b/src/Driver/Ntvol.c
index 7556b4c..9acebae 100644
--- a/src/Driver/Ntvol.c
+++ b/src/Driver/Ntvol.c
@@ -80,7 +80,9 @@ NTSTATUS TCOpenVolume (PDEVICE_OBJECT DeviceObject,
PARTITION_INFORMATION pi;
PARTITION_INFORMATION_EX pix;
LARGE_INTEGER diskLengthInfo;
- DISK_GEOMETRY dg;
+ DISK_GEOMETRY dg;
+ STORAGE_PROPERTY_QUERY storagePropertyQuery = {0};
+ STORAGE_ACCESS_ALIGNMENT_DESCRIPTOR storageDescriptor = {0};
ntStatus = IoGetDeviceObjectPointer (&FullFileName,
FILE_READ_DATA | FILE_READ_ATTRIBUTES,
@@ -97,6 +99,21 @@ NTSTATUS TCOpenVolume (PDEVICE_OBJECT DeviceObject,
lDiskLength.QuadPart = dg.Cylinders.QuadPart * dg.SectorsPerTrack * dg.TracksPerCylinder * dg.BytesPerSector;
Extension->HostBytesPerSector = dg.BytesPerSector;
+ storagePropertyQuery.PropertyId = StorageAccessAlignmentProperty;
+ storagePropertyQuery.QueryType = PropertyStandardQuery;
+
+ /* IOCTL_STORAGE_QUERY_PROPERTY supported only on Vista and above */
+ if (NT_SUCCESS (TCSendHostDeviceIoControlRequestEx (DeviceObject, Extension, IOCTL_STORAGE_QUERY_PROPERTY,
+ (char*) &storagePropertyQuery, sizeof(storagePropertyQuery),
+ (char *) &storageDescriptor, sizeof (storageDescriptor))))
+ {
+ Extension->HostBytesPerPhysicalSector = storageDescriptor.BytesPerPhysicalSector;
+ }
+ else
+ {
+ Extension->HostBytesPerPhysicalSector = dg.BytesPerSector;
+ }
+
// Drive geometry is used only when IOCTL_DISK_GET_PARTITION_INFO fails
if (NT_SUCCESS (TCSendHostDeviceIoControlRequest (DeviceObject, Extension, IOCTL_DISK_GET_PARTITION_INFO_EX, (char *) &pix, sizeof (pix))))
{
@@ -144,6 +161,7 @@ NTSTATUS TCOpenVolume (PDEVICE_OBJECT DeviceObject,
}
Extension->HostBytesPerSector = mount->BytesPerSector;
+ Extension->HostBytesPerPhysicalSector = mount->BytesPerPhysicalSector;
if (Extension->HostBytesPerSector != TC_SECTOR_SIZE_FILE_HOSTED_VOLUME)
disableBuffering = FALSE;
@@ -746,9 +764,11 @@ void TCCloseVolume (PDEVICE_OBJECT DeviceObject, PEXTENSION Extension)
}
-NTSTATUS TCSendHostDeviceIoControlRequest (PDEVICE_OBJECT DeviceObject,
+NTSTATUS TCSendHostDeviceIoControlRequestEx (PDEVICE_OBJECT DeviceObject,
PEXTENSION Extension,
ULONG IoControlCode,
+ void *InputBuffer,
+ ULONG InputBufferSize,
void *OutputBuffer,
ULONG OutputBufferSize)
{
@@ -762,7 +782,7 @@ NTSTATUS TCSendHostDeviceIoControlRequest (PDEVICE_OBJECT DeviceObject,
Irp = IoBuildDeviceIoControlRequest (IoControlCode,
Extension->pFsdDevice,
- NULL, 0,
+ InputBuffer, InputBufferSize,
OutputBuffer, OutputBufferSize,
FALSE,
&Extension->keVolumeEvent,
@@ -787,6 +807,15 @@ NTSTATUS TCSendHostDeviceIoControlRequest (PDEVICE_OBJECT DeviceObject,
return ntStatus;
}
+NTSTATUS TCSendHostDeviceIoControlRequest (PDEVICE_OBJECT DeviceObject,
+ PEXTENSION Extension,
+ ULONG IoControlCode,
+ void *OutputBuffer,
+ ULONG OutputBufferSize)
+{
+ return TCSendHostDeviceIoControlRequestEx (DeviceObject, Extension, IoControlCode, NULL, 0, OutputBuffer, OutputBufferSize);
+}
+
NTSTATUS COMPLETE_IRP (PDEVICE_OBJECT DeviceObject,
PIRP Irp,
NTSTATUS IrpStatus,
diff --git a/src/Driver/Ntvol.h b/src/Driver/Ntvol.h
index a6e9ff9..e67ca1e 100644
--- a/src/Driver/Ntvol.h
+++ b/src/Driver/Ntvol.h
@@ -15,5 +15,6 @@ NTSTATUS TCOpenVolume ( PDEVICE_OBJECT DeviceObject , PEXTENSION Extension , MOU
void TCCloseVolume ( PDEVICE_OBJECT DeviceObject , PEXTENSION Extension );
NTSTATUS TCCompletion ( PDEVICE_OBJECT DeviceObject , PIRP Irp , PVOID pUserBuffer );
static NTSTATUS TCSendHostDeviceIoControlRequest ( PDEVICE_OBJECT DeviceObject , PEXTENSION Extension , ULONG IoControlCode , void *OutputBuffer , ULONG OutputBufferSize );
+static NTSTATUS TCSendHostDeviceIoControlRequestEx ( PDEVICE_OBJECT DeviceObject , PEXTENSION Extension , ULONG IoControlCode , void *InputBuffer , ULONG InputBufferSize , void *OutputBuffer , ULONG OutputBufferSize );
NTSTATUS COMPLETE_IRP ( PDEVICE_OBJECT DeviceObject , PIRP Irp , NTSTATUS IrpStatus , ULONG_PTR IrpInformation );
static void RestoreTimeStamp ( PEXTENSION Extension );