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| author | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2015-05-03 08:43:10 +0200 |
|---|---|---|
| committer | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2015-05-03 15:47:29 +0200 |
| commit | 7d52dda67c370de7d615678b61920c822eeb7142 (patch) | |
| tree | 72157105bee4c38b6ae13ce9b6bd52474d1a3b4d /src/Driver/Ntvol.c | |
| parent | 0f2d32f01145f82fa83806e08ddde6cdce8a496d (diff) | |
| download | VeraCrypt-7d52dda67c370de7d615678b61920c822eeb7142.tar.gz VeraCrypt-7d52dda67c370de7d615678b61920c822eeb7142.zip | |
Windows Driver: Implement querying physical sector size of veraCrypt volume through IOCTL_STORAGE_QUERY_PROPERTY
Diffstat (limited to 'src/Driver/Ntvol.c')
| -rw-r--r-- | src/Driver/Ntvol.c | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/src/Driver/Ntvol.c b/src/Driver/Ntvol.c index 7556b4cf..9acebaed 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,
|