VOID DokanUnmount(__in PDokanDCB Dcb) {
ULONG eventLength;
PEVENT_CONTEXT eventContext;
PDRIVER_EVENT_CONTEXT driverEventContext;
PKEVENT completedEvent;
LARGE_INTEGER timeout;
PDokanVCB vcb = Dcb->Vcb;
ULONG deviceNamePos;
DDbgPrint("==> DokanUnmount\n");
eventLength = sizeof(EVENT_CONTEXT);
eventContext = AllocateEventContextRaw(eventLength);
if (eventContext == NULL) {
; // STATUS_INSUFFICIENT_RESOURCES;
DDbgPrint(" Not able to allocate eventContext.\n");
if (vcb) {
DokanEventRelease(vcb->DeviceObject);
}
return;
}
driverEventContext =
CONTAINING_RECORD(eventContext, DRIVER_EVENT_CONTEXT, EventContext);
completedEvent = ExAllocatePool(sizeof(KEVENT));
if (completedEvent) {
KeInitializeEvent(completedEvent, NotificationEvent, FALSE);
driverEventContext->Completed = completedEvent;
}
deviceNamePos = Dcb->SymbolicLinkName->Length / sizeof(WCHAR) - 1;
for (; Dcb->SymbolicLinkName->Buffer[deviceNamePos] != L'\\'; --deviceNamePos)
;
RtlStringCchCopyW(eventContext->Operation.Unmount.DeviceName,
sizeof(eventContext->Operation.Unmount.DeviceName) /
sizeof(WCHAR),
&(Dcb->SymbolicLinkName->Buffer[deviceNamePos]));
DDbgPrint(" Send Unmount to Service : %ws\n",
eventContext->Operation.Unmount.DeviceName);
DokanEventNotification(&Dcb->Global->NotifyService, eventContext);
if (completedEvent) {
timeout.QuadPart = -1 * 10 * 1000 * 10; // 10 sec
KeWaitForSingleObject(completedEvent, Executive, KernelMode, FALSE,
&timeout);
}
if (vcb) {
DokanEventRelease(vcb->DeviceObject);
}
if (completedEvent) {
ExFreePool(completedEvent);
}
DDbgPrint("<== DokanUnmount\n");
}
VOID
DokanCheckKeepAlive(
PDEVICE_EXTENSION DeviceExtension)
{
LARGE_INTEGER tickCount;
ULONG eventLength;
PEVENT_CONTEXT eventContext;
ULONG mounted;
//DDbgPrint("==> DokanCheckKeepAlive\n");
KeQueryTickCount(&tickCount);
ExAcquireResourceSharedLite(&DeviceExtension->Resource, TRUE);
if ( (tickCount.QuadPart - DeviceExtension->TickCount.QuadPart) * KeQueryTimeIncrement()
> DOKAN_KEEPALIVE_TIMEOUT * 10000 * 1000) {
mounted = DeviceExtension->Mounted;
ExReleaseResourceLite(&DeviceExtension->Resource);
DDbgPrint(" Force to umount\n");
if (!mounted) {
// not mounted
return;
}
eventLength = sizeof(EVENT_CONTEXT);
eventContext = ExAllocatePool(eventLength);
if (eventContext == NULL) {
;//STATUS_INSUFFICIENT_RESOURCES;
DokanEventRelease(DeviceExtension->DeviceObject);
return;
}
RtlZeroMemory(eventContext, eventLength);
eventContext->Length = eventLength;
// set drive letter
eventContext->Flags = mounted;
DokanEventNotification(&DeviceExtension->Global->NotifyService, eventContext);
DokanEventRelease(DeviceExtension->DeviceObject);
} else {
ExReleaseResourceLite(&DeviceExtension->Resource);
}
//DDbgPrint("<== DokanCheckKeepAlive\n");
}
NTSTATUS DokanGlobalEventRelease(__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp) {
PDOKAN_GLOBAL dokanGlobal;
PIO_STACK_LOCATION irpSp;
PDOKAN_UNICODE_STRING_INTERMEDIATE szMountPoint;
DOKAN_CONTROL dokanControl;
PMOUNT_ENTRY mountEntry;
dokanGlobal = DeviceObject->DeviceExtension;
if (GetIdentifierType(dokanGlobal) != DGL) {
return STATUS_INVALID_PARAMETER;
}
irpSp = IoGetCurrentIrpStackLocation(Irp);
if (irpSp->Parameters.DeviceIoControl.InputBufferLength <
sizeof(DOKAN_UNICODE_STRING_INTERMEDIATE)) {
DDbgPrint(
"Input buffer is too small (< DOKAN_UNICODE_STRING_INTERMEDIATE)\n");
return STATUS_BUFFER_TOO_SMALL;
}
szMountPoint =
(PDOKAN_UNICODE_STRING_INTERMEDIATE)Irp->AssociatedIrp.SystemBuffer;
if (irpSp->Parameters.DeviceIoControl.InputBufferLength <
sizeof(DOKAN_UNICODE_STRING_INTERMEDIATE) + szMountPoint->MaximumLength) {
DDbgPrint("Input buffer is too small\n");
return STATUS_BUFFER_TOO_SMALL;
}
RtlZeroMemory(&dokanControl, sizeof(dokanControl));
RtlStringCchCopyW(dokanControl.MountPoint, MAXIMUM_FILENAME_LENGTH,
L"\\DosDevices\\");
if ((szMountPoint->Length / sizeof(WCHAR)) < 4) {
dokanControl.MountPoint[12] = towupper(szMountPoint->Buffer[0]);
dokanControl.MountPoint[13] = L':';
dokanControl.MountPoint[14] = L'\0';
} else {
RtlCopyMemory(&dokanControl.MountPoint[12], szMountPoint->Buffer,
szMountPoint->Length);
}
mountEntry = FindMountEntry(dokanGlobal, &dokanControl);
if (mountEntry == NULL) {
DDbgPrint("Cannot found device associated to mount point %ws\n",
dokanControl.MountPoint);
return STATUS_BUFFER_TOO_SMALL;
}
return DokanEventRelease(mountEntry->MountControl.DeviceObject);
}
NTSTATUS
DokanDispatchDeviceControl(__in PDEVICE_OBJECT DeviceObject, __in PIRP Irp)
/*++
Routine Description:
This device control dispatcher handles IOCTLs.
Arguments:
DeviceObject - Context for the activity.
Irp - The device control argument block.
Return Value:
NTSTATUS
--*/
{
PDokanVCB vcb;
PDokanDCB dcb;
PIO_STACK_LOCATION irpSp;
NTSTATUS status = STATUS_NOT_IMPLEMENTED;
ULONG controlCode = 0;
ULONG outputLength = 0;
// {DCA0E0A5-D2CA-4f0f-8416-A6414657A77A}
// GUID dokanGUID = { 0xdca0e0a5, 0xd2ca, 0x4f0f, { 0x84, 0x16, 0xa6, 0x41,
// 0x46, 0x57, 0xa7, 0x7a } };
__try {
Irp->IoStatus.Information = 0;
irpSp = IoGetCurrentIrpStackLocation(Irp);
outputLength = irpSp->Parameters.DeviceIoControl.OutputBufferLength;
controlCode = irpSp->Parameters.DeviceIoControl.IoControlCode;
if (controlCode != IOCTL_EVENT_WAIT && controlCode != IOCTL_EVENT_INFO &&
controlCode != IOCTL_KEEPALIVE) {
DDbgPrint("==> DokanDispatchIoControl\n");
DDbgPrint(" ProcessId %lu\n", IoGetRequestorProcessId(Irp));
}
if (DeviceObject->DriverObject == NULL ||
DeviceObject->ReferenceCount < 0) {
status = STATUS_DEVICE_DOES_NOT_EXIST;
__leave;
}
vcb = DeviceObject->DeviceExtension;
PrintIdType(vcb);
if (GetIdentifierType(vcb) == DGL) {
status = GlobalDeviceControl(DeviceObject, Irp);
__leave;
} else if (GetIdentifierType(vcb) == DCB) {
status = DiskDeviceControlWithLock(DeviceObject, Irp);
__leave;
} else if (GetIdentifierType(vcb) != VCB) {
status = STATUS_INVALID_PARAMETER;
__leave;
}
dcb = vcb->Dcb;
switch (irpSp->Parameters.DeviceIoControl.IoControlCode) {
case IOCTL_EVENT_WAIT:
DDbgPrint(" IOCTL_EVENT_WAIT\n");
status = DokanRegisterPendingIrpForEvent(DeviceObject, Irp);
break;
case IOCTL_EVENT_INFO:
// DDbgPrint(" IOCTL_EVENT_INFO\n");
status = DokanCompleteIrp(DeviceObject, Irp);
break;
case IOCTL_EVENT_RELEASE:
DDbgPrint(" IOCTL_EVENT_RELEASE\n");
status = DokanEventRelease(DeviceObject, Irp);
break;
case IOCTL_EVENT_WRITE:
DDbgPrint(" IOCTL_EVENT_WRITE\n");
status = DokanEventWrite(DeviceObject, Irp);
break;
case IOCTL_KEEPALIVE:
DDbgPrint(" IOCTL_KEEPALIVE\n");
if (IsFlagOn(vcb->Flags, VCB_MOUNTED)) {
ExEnterCriticalRegionAndAcquireResourceExclusive(&dcb->Resource);
DokanUpdateTimeout(&dcb->TickCount, DOKAN_KEEPALIVE_TIMEOUT);
ExReleaseResourceAndLeaveCriticalRegion(&dcb->Resource);
status = STATUS_SUCCESS;
} else {
DDbgPrint(" device is not mounted\n");
status = STATUS_INSUFFICIENT_RESOURCES;
}
break;
case IOCTL_RESET_TIMEOUT:
status = DokanResetPendingIrpTimeout(DeviceObject, Irp);
break;
case IOCTL_GET_ACCESS_TOKEN:
status = DokanGetAccessToken(DeviceObject, Irp);
break;
default: {
ULONG baseCode = DEVICE_TYPE_FROM_CTL_CODE(
irpSp->Parameters.DeviceIoControl.IoControlCode);
status = STATUS_NOT_IMPLEMENTED;
// In case of IOCTL_STORAGE_BASE or IOCTL_DISK_BASE OR
// FILE_DEVICE_NETWORK_FILE_SYSTEM or MOUNTDEVCONTROLTYPE ioctl type, pass
// to DiskDeviceControl to avoid code duplication
// TODO: probably not the best way to pass down Irp...
if (baseCode == IOCTL_STORAGE_BASE || baseCode == IOCTL_DISK_BASE ||
baseCode == FILE_DEVICE_NETWORK_FILE_SYSTEM ||
baseCode == MOUNTDEVCONTROLTYPE) {
status = DiskDeviceControlWithLock(dcb->DeviceObject, Irp);
}
if (status == STATUS_NOT_IMPLEMENTED) {
PrintUnknownDeviceIoctlCode(
irpSp->Parameters.DeviceIoControl.IoControlCode);
}
} break;
} // switch IoControlCode
} __finally {
if (status != STATUS_PENDING) {
if (IsDeletePending(DeviceObject)) {
DDbgPrint(" DeviceObject is invalid, so prevent BSOD");
status = STATUS_DEVICE_REMOVED;
}
DokanCompleteIrpRequest(Irp, status, Irp->IoStatus.Information);
}
if (controlCode != IOCTL_EVENT_WAIT && controlCode != IOCTL_EVENT_INFO &&
controlCode != IOCTL_KEEPALIVE) {
DokanPrintNTStatus(status);
DDbgPrint("<== DokanDispatchIoControl\n");
}
}
return status;
}
NTSTATUS
DiskDeviceControl(__in PDEVICE_OBJECT DeviceObject, __in PIRP Irp) {
PIO_STACK_LOCATION irpSp;
PDokanDCB dcb;
PDokanVCB vcb;
NTSTATUS status = STATUS_NOT_IMPLEMENTED;
ULONG outputLength = 0;
ULONG inputLength = 0;
DDbgPrint(" => DokanDiskDeviceControl\n");
irpSp = IoGetCurrentIrpStackLocation(Irp);
dcb = DeviceObject->DeviceExtension;
outputLength = irpSp->Parameters.DeviceIoControl.OutputBufferLength;
inputLength = irpSp->Parameters.DeviceIoControl.InputBufferLength;
if (GetIdentifierType(dcb) != DCB) {
PrintIdType(dcb);
DDbgPrint(" Device is not dcb so go out here\n");
return STATUS_INVALID_PARAMETER;
}
if (IsDeletePending(DeviceObject)) {
DDbgPrint(" Device object is pending for delete valid anymore\n");
return STATUS_DEVICE_REMOVED;
}
vcb = dcb->Vcb;
if (IsUnmountPendingVcb(vcb)) {
DDbgPrint(" Volume is unmounted so ignore dcb requests\n");
return STATUS_NO_SUCH_DEVICE;
}
DDbgPrint(" DiskDeviceControl Device name %wZ \n", dcb->DiskDeviceName);
switch (irpSp->Parameters.DeviceIoControl.IoControlCode) {
case IOCTL_DISK_GET_DRIVE_GEOMETRY: {
PDISK_GEOMETRY diskGeometry;
DDbgPrint(" IOCTL_DISK_GET_DRIVE_GEOMETRY\n");
if (outputLength < sizeof(DISK_GEOMETRY)) {
Irp->IoStatus.Information = 0;
status = STATUS_BUFFER_TOO_SMALL;
break;
}
diskGeometry = (PDISK_GEOMETRY)Irp->AssociatedIrp.SystemBuffer;
ASSERT(diskGeometry != NULL);
DokanPopulateDiskGeometry(diskGeometry);
Irp->IoStatus.Information = sizeof(DISK_GEOMETRY);
status = STATUS_SUCCESS;
} break;
case IOCTL_DISK_GET_LENGTH_INFO: {
PGET_LENGTH_INFORMATION getLengthInfo;
DDbgPrint(" IOCTL_DISK_GET_LENGTH_INFO\n");
if (outputLength < sizeof(GET_LENGTH_INFORMATION)) {
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
getLengthInfo = (PGET_LENGTH_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
ASSERT(getLengthInfo != NULL);
getLengthInfo->Length.QuadPart = 1024 * 1024 * 500;
status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(GET_LENGTH_INFORMATION);
} break;
case IOCTL_DISK_GET_DRIVE_LAYOUT:
case IOCTL_DISK_GET_DRIVE_LAYOUT_EX:
case IOCTL_DISK_GET_PARTITION_INFO:
case IOCTL_DISK_GET_PARTITION_INFO_EX: {
// Fake drive layout/partition information
VOID *outputBuffer = Irp->AssociatedIrp.SystemBuffer;
ULONG ioctl = irpSp->Parameters.DeviceIoControl.IoControlCode;
switch (ioctl) {
case IOCTL_DISK_GET_DRIVE_LAYOUT:
DDbgPrint(" IOCTL_DISK_GET_DRIVE_LAYOUT\n");
Irp->IoStatus.Information =
FIELD_OFFSET(DRIVE_LAYOUT_INFORMATION, PartitionEntry[1]);
break;
case IOCTL_DISK_GET_DRIVE_LAYOUT_EX:
DDbgPrint(" IOCTL_DISK_GET_DRIVE_LAYOUT_EX\n");
Irp->IoStatus.Information =
FIELD_OFFSET(DRIVE_LAYOUT_INFORMATION_EX, PartitionEntry[1]);
break;
case IOCTL_DISK_GET_PARTITION_INFO:
DDbgPrint(" IOCTL_DISK_GET_PARTITION_INFO\n");
Irp->IoStatus.Information = sizeof(PARTITION_INFORMATION);
break;
case IOCTL_DISK_GET_PARTITION_INFO_EX:
DDbgPrint(" IOCTL_DISK_GET_PARTITION_INFO_EX\n");
Irp->IoStatus.Information = sizeof(PARTITION_INFORMATION_EX);
break;
default:
DDbgPrint(" unknown ioctl %d\n", ioctl);
break;
}
if (outputLength < Irp->IoStatus.Information) {
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
RtlZeroMemory(outputBuffer, Irp->IoStatus.Information);
// if we are getting the drive layout, then we need to start by
// adding some of the non-partition stuff that says we have
// exactly one partition available.
if (ioctl == IOCTL_DISK_GET_DRIVE_LAYOUT) {
PDRIVE_LAYOUT_INFORMATION layout;
layout = (PDRIVE_LAYOUT_INFORMATION)outputBuffer;
layout->PartitionCount = 1;
layout->Signature = 1;
outputBuffer = (PVOID)(layout->PartitionEntry);
ioctl = IOCTL_DISK_GET_PARTITION_INFO;
} else if (ioctl == IOCTL_DISK_GET_DRIVE_LAYOUT_EX) {
PDRIVE_LAYOUT_INFORMATION_EX layoutEx;
layoutEx = (PDRIVE_LAYOUT_INFORMATION_EX)outputBuffer;
layoutEx->PartitionStyle = PARTITION_STYLE_MBR;
layoutEx->PartitionCount = 1;
layoutEx->Mbr.Signature = 1;
outputBuffer = (PVOID)(layoutEx->PartitionEntry);
ioctl = IOCTL_DISK_GET_PARTITION_INFO_EX;
}
// NOTE: the local var 'ioctl' is now modified to either EX or
// non-EX version. the local var 'systemBuffer' is now pointing
// to the partition information structure.
if (ioctl == IOCTL_DISK_GET_PARTITION_INFO) {
PPARTITION_INFORMATION partitionInfo;
partitionInfo = (PPARTITION_INFORMATION)outputBuffer;
partitionInfo->RewritePartition = FALSE;
partitionInfo->RecognizedPartition = FALSE;
partitionInfo->PartitionType = PARTITION_ENTRY_UNUSED;
partitionInfo->BootIndicator = FALSE;
partitionInfo->HiddenSectors = 0;
partitionInfo->StartingOffset.QuadPart = 0;
partitionInfo->PartitionLength.QuadPart =
DOKAN_DEFAULT_DISK_SIZE; // Partition size equels disk size here
partitionInfo->PartitionNumber = 0;
} else {
PPARTITION_INFORMATION_EX partitionInfo;
partitionInfo = (PPARTITION_INFORMATION_EX)outputBuffer;
partitionInfo->PartitionStyle = PARTITION_STYLE_MBR;
partitionInfo->RewritePartition = FALSE;
partitionInfo->Mbr.RecognizedPartition = FALSE;
partitionInfo->Mbr.PartitionType = PARTITION_ENTRY_UNUSED;
partitionInfo->Mbr.BootIndicator = FALSE;
partitionInfo->Mbr.HiddenSectors = 0;
partitionInfo->StartingOffset.QuadPart = 0;
partitionInfo->PartitionLength.QuadPart =
DOKAN_DEFAULT_DISK_SIZE; // Partition size equels disk size here
partitionInfo->PartitionNumber = 0;
}
status = STATUS_SUCCESS;
} break;
case IOCTL_DISK_IS_WRITABLE:
DDbgPrint(" IOCTL_DISK_IS_WRITABLE\n");
status = IS_DEVICE_READ_ONLY(DeviceObject) ? STATUS_MEDIA_WRITE_PROTECTED
: STATUS_SUCCESS;
break;
case IOCTL_DISK_MEDIA_REMOVAL:
DDbgPrint(" IOCTL_DISK_MEDIA_REMOVAL\n");
status = STATUS_SUCCESS;
break;
case IOCTL_STORAGE_MEDIA_REMOVAL:
DDbgPrint(" IOCTL_STORAGE_MEDIA_REMOVAL\n");
status = STATUS_SUCCESS;
break;
case IOCTL_DISK_SET_PARTITION_INFO:
DDbgPrint(" IOCTL_DISK_SET_PARTITION_INFO\n");
break;
case IOCTL_DISK_VERIFY:
DDbgPrint(" IOCTL_DISK_VERIFY\n");
break;
case IOCTL_STORAGE_GET_HOTPLUG_INFO: {
PSTORAGE_HOTPLUG_INFO hotplugInfo;
DDbgPrint(" IOCTL_STORAGE_GET_HOTPLUG_INFO\n");
if (outputLength < sizeof(STORAGE_HOTPLUG_INFO)) {
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
hotplugInfo = Irp->AssociatedIrp.SystemBuffer;
hotplugInfo->Size = sizeof(STORAGE_HOTPLUG_INFO);
hotplugInfo->MediaRemovable = 1;
hotplugInfo->MediaHotplug = 1;
hotplugInfo->DeviceHotplug = 1;
hotplugInfo->WriteCacheEnableOverride = 0;
status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(STORAGE_HOTPLUG_INFO);
} break;
case IOCTL_VOLUME_GET_GPT_ATTRIBUTES: {
DDbgPrint(" IOCTL_VOLUME_GET_GPT_ATTRIBUTES\n");
PVOLUME_GET_GPT_ATTRIBUTES_INFORMATION gptAttrInfo;
if (outputLength < sizeof(VOLUME_GET_GPT_ATTRIBUTES_INFORMATION)) {
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
// Set GPT read-only flag if device is not writable
gptAttrInfo = Irp->AssociatedIrp.SystemBuffer;
if (IS_DEVICE_READ_ONLY(DeviceObject))
gptAttrInfo->GptAttributes = GPT_BASIC_DATA_ATTRIBUTE_READ_ONLY;
Irp->IoStatus.Information = sizeof(VOLUME_GET_GPT_ATTRIBUTES_INFORMATION);
status = STATUS_SUCCESS;
} break;
case IOCTL_STORAGE_CHECK_VERIFY:
case IOCTL_DISK_CHECK_VERIFY:
DDbgPrint(" IOCTL_STORAGE_CHECK_VERIFY\n");
status = STATUS_SUCCESS;
break;
case IOCTL_STORAGE_CHECK_VERIFY2:
DDbgPrint(" IOCTL_STORAGE_CHECK_VERIFY2\n");
status = STATUS_SUCCESS;
break;
case IOCTL_STORAGE_QUERY_PROPERTY:
DDbgPrint(" IOCTL_STORAGE_QUERY_PROPERTY\n");
PSTORAGE_PROPERTY_QUERY query = NULL;
query = (PSTORAGE_PROPERTY_QUERY)Irp->AssociatedIrp.SystemBuffer;
ASSERT(query != NULL);
if (query->QueryType == PropertyExistsQuery) {
if (query->PropertyId == StorageDeviceUniqueIdProperty) {
PSTORAGE_DEVICE_UNIQUE_IDENTIFIER storage;
DDbgPrint(" PropertyExistsQuery StorageDeviceUniqueIdProperty\n");
if (outputLength < sizeof(STORAGE_DEVICE_UNIQUE_IDENTIFIER)) {
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
storage = Irp->AssociatedIrp.SystemBuffer;
status = STATUS_SUCCESS;
} else if (query->PropertyId == StorageDeviceWriteCacheProperty) {
DDbgPrint(" PropertyExistsQuery StorageDeviceWriteCacheProperty\n");
status = STATUS_NOT_IMPLEMENTED;
} else {
DDbgPrint(" PropertyExistsQuery Unknown %d\n", query->PropertyId);
status = STATUS_NOT_IMPLEMENTED;
}
} else if (query->QueryType == PropertyStandardQuery) {
if (query->PropertyId == StorageDeviceProperty) {
PSTORAGE_DEVICE_DESCRIPTOR storage;
DDbgPrint(" PropertyStandardQuery StorageDeviceProperty\n");
if (outputLength < sizeof(STORAGE_DEVICE_DESCRIPTOR)) {
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
storage = Irp->AssociatedIrp.SystemBuffer;
status = STATUS_SUCCESS;
} else if (query->PropertyId == StorageAdapterProperty) {
DDbgPrint(" PropertyStandardQuery StorageAdapterProperty\n");
status = STATUS_NOT_IMPLEMENTED;
} else {
DDbgPrint(" PropertyStandardQuery Unknown %d\n", query->PropertyId);
status = STATUS_ACCESS_DENIED;
}
} else {
DDbgPrint(" Unknown query type %d\n", query->QueryType);
status = STATUS_ACCESS_DENIED;
}
break;
case IOCTL_MOUNTDEV_QUERY_DEVICE_NAME: {
PMOUNTDEV_NAME mountdevName;
PUNICODE_STRING deviceName = dcb->DiskDeviceName;
DDbgPrint(" IOCTL_MOUNTDEV_QUERY_DEVICE_NAME\n");
if (outputLength < sizeof(MOUNTDEV_NAME)) {
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = sizeof(MOUNTDEV_NAME);
break;
}
mountdevName = (PMOUNTDEV_NAME)Irp->AssociatedIrp.SystemBuffer;
ASSERT(mountdevName != NULL);
/* NOTE: When Windows API GetVolumeNameForVolumeMountPoint is called, this
IO control is called.
Even if status = STATUS_SUCCESS, GetVolumeNameForVolumeMountPoint can
returns error
if it doesn't match cached data from mount manager (looks like).
*/
RtlZeroMemory(mountdevName, outputLength);
mountdevName->NameLength = deviceName->Length;
if (sizeof(USHORT) + mountdevName->NameLength <= outputLength) {
RtlCopyMemory((PCHAR)mountdevName->Name, deviceName->Buffer,
mountdevName->NameLength);
Irp->IoStatus.Information = sizeof(USHORT) + mountdevName->NameLength;
status = STATUS_SUCCESS;
DDbgPrint(" DeviceName %wZ\n", deviceName);
} else {
Irp->IoStatus.Information = sizeof(MOUNTDEV_NAME);
status = STATUS_BUFFER_OVERFLOW;
}
} break;
case IOCTL_MOUNTDEV_QUERY_UNIQUE_ID: {
PMOUNTDEV_UNIQUE_ID uniqueId;
DDbgPrint(" IOCTL_MOUNTDEV_QUERY_UNIQUE_ID\n");
if (outputLength < sizeof(MOUNTDEV_UNIQUE_ID)) {
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = sizeof(MOUNTDEV_UNIQUE_ID);
break;
}
uniqueId = (PMOUNTDEV_UNIQUE_ID)Irp->AssociatedIrp.SystemBuffer;
ASSERT(uniqueId != NULL);
uniqueId->UniqueIdLength = dcb->DiskDeviceName->Length;
if (sizeof(USHORT) + uniqueId->UniqueIdLength <= outputLength) {
RtlCopyMemory((PCHAR)uniqueId->UniqueId, dcb->DiskDeviceName->Buffer,
uniqueId->UniqueIdLength);
Irp->IoStatus.Information =
FIELD_OFFSET(MOUNTDEV_UNIQUE_ID, UniqueId[0]) +
uniqueId->UniqueIdLength;
status = STATUS_SUCCESS;
DDbgPrint(" UniqueName %wZ\n", dcb->DiskDeviceName);
break;
} else {
Irp->IoStatus.Information = sizeof(MOUNTDEV_UNIQUE_ID);
status = STATUS_BUFFER_OVERFLOW;
}
} break;
case IOCTL_MOUNTDEV_QUERY_SUGGESTED_LINK_NAME: {
PMOUNTDEV_SUGGESTED_LINK_NAME linkName;
DDbgPrint(" IOCTL_MOUNTDEV_QUERY_SUGGESTED_LINK_NAME\n");
if (outputLength < sizeof(MOUNTDEV_SUGGESTED_LINK_NAME)) {
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = sizeof(MOUNTDEV_SUGGESTED_LINK_NAME);
break;
}
linkName = (PMOUNTDEV_SUGGESTED_LINK_NAME)Irp->AssociatedIrp.SystemBuffer;
ASSERT(linkName != NULL);
if (dcb->MountPoint != NULL && dcb->MountPoint->Length > 0) {
if (IsMountPointDriveLetter(dcb->MountPoint) == STATUS_SUCCESS) {
linkName->UseOnlyIfThereAreNoOtherLinks = FALSE;
linkName->NameLength = dcb->MountPoint->Length;
if (sizeof(USHORT) + linkName->NameLength <= outputLength) {
RtlCopyMemory((PCHAR)linkName->Name, dcb->MountPoint->Buffer,
linkName->NameLength);
Irp->IoStatus.Information =
FIELD_OFFSET(MOUNTDEV_SUGGESTED_LINK_NAME, Name[0]) +
linkName->NameLength;
status = STATUS_SUCCESS;
DDbgPrint(" LinkName %wZ (%d)\n", dcb->MountPoint,
dcb->MountPoint->Length);
break;
} else {
Irp->IoStatus.Information = sizeof(MOUNTDEV_SUGGESTED_LINK_NAME);
status = STATUS_BUFFER_OVERFLOW;
}
} else {
DDbgPrint(" MountPoint %wZ is not a drive\n", dcb->MountPoint);
status = STATUS_NOT_FOUND;
}
} else {
DDbgPrint(" MountPoint is NULL or undefined\n");
status = STATUS_NOT_FOUND;
}
} break;
case IOCTL_MOUNTDEV_LINK_CREATED: {
PMOUNTDEV_NAME mountdevName = Irp->AssociatedIrp.SystemBuffer;
DDbgPrint(" IOCTL_MOUNTDEV_LINK_CREATED\n");
status = STATUS_SUCCESS;
if (!IsUnmountPending(DeviceObject) && mountdevName != NULL &&
mountdevName->NameLength > 0) {
WCHAR *symbolicLinkNameBuf =
ExAllocatePool((mountdevName->NameLength + 1) * sizeof(WCHAR));
if (symbolicLinkNameBuf == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
RtlZeroMemory(symbolicLinkNameBuf,
(mountdevName->NameLength + 1) * sizeof(WCHAR));
RtlCopyMemory(symbolicLinkNameBuf, mountdevName->Name,
mountdevName->NameLength);
DDbgPrint(" MountDev Name: %ws\n", symbolicLinkNameBuf);
if (wcsncmp(symbolicLinkNameBuf, L"\\DosDevices\\", 12) == 0) {
if (dcb->MountPoint != NULL && dcb->MountPoint->Length == 0) {
ExFreePool(dcb->MountPoint);
dcb->MountPoint = NULL;
}
if (!dcb->MountPoint ||
((dcb->MountPoint->Length != mountdevName->NameLength ||
RtlCompareMemory(mountdevName->Name, dcb->MountPoint->Buffer,
mountdevName->NameLength) !=
mountdevName->NameLength))) {
DDbgPrint(" Update mount Point by %ws\n", symbolicLinkNameBuf);
ExFreePool(dcb->MountPoint);
dcb->MountPoint = DokanAllocateUnicodeString(symbolicLinkNameBuf);
if (dcb->DiskDeviceName != NULL) {
PMOUNT_ENTRY mountEntry;
PDOKAN_CONTROL dokanControl = ExAllocatePool(sizeof(DOKAN_CONTROL));
if (dokanControl == NULL) {
ExFreePool(symbolicLinkNameBuf);
status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
RtlZeroMemory(dokanControl, sizeof(*dokanControl));
RtlCopyMemory(dokanControl->DeviceName, dcb->DiskDeviceName->Buffer,
dcb->DiskDeviceName->Length);
if (dcb->UNCName->Buffer != NULL && dcb->UNCName->Length > 0) {
RtlCopyMemory(dokanControl->UNCName, dcb->UNCName->Buffer,
dcb->UNCName->Length);
}
mountEntry = FindMountEntry(dcb->Global, dokanControl, TRUE);
ExFreePool(dokanControl);
if (mountEntry != NULL) {
RtlStringCchCopyW(mountEntry->MountControl.MountPoint,
MAXIMUM_FILENAME_LENGTH, symbolicLinkNameBuf);
} else {
DDbgPrint(" Cannot found associated MountEntry.\n");
}
} else {
DDbgPrint(
" DiskDeviceName is null. Is device currently unmounted?\n");
}
} else {
DDbgPrint(" Mount Point match, no need to update it.\n");
}
} else {
DDbgPrint(" Mount Point is not DosDevices, ignored.\n");
}
ExFreePool(symbolicLinkNameBuf);
} else {
DDbgPrint(" MountDev Name is undefined or unmounting in progress.\n");
}
} break;
case IOCTL_MOUNTDEV_LINK_DELETED: {
PMOUNTDEV_NAME mountdevName = Irp->AssociatedIrp.SystemBuffer;
DDbgPrint(" IOCTL_MOUNTDEV_LINK_DELETED\n");
status = STATUS_SUCCESS;
if (dcb->UseMountManager) {
if (mountdevName != NULL && mountdevName->NameLength > 0) {
WCHAR *symbolicLinkNameBuf =
ExAllocatePool((mountdevName->NameLength + 1) * sizeof(WCHAR));
if (symbolicLinkNameBuf == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
RtlZeroMemory(symbolicLinkNameBuf,
(mountdevName->NameLength + 1) * sizeof(WCHAR));
RtlCopyMemory(symbolicLinkNameBuf, mountdevName->Name,
mountdevName->NameLength);
DDbgPrint(" MountDev Name: %ws\n", symbolicLinkNameBuf);
if (dcb->MountPoint != NULL && dcb->MountPoint->Length > 0) {
// If deleted mount point match user requested mount point, release
// devices
if (dcb->MountPoint->Length == mountdevName->NameLength &&
RtlCompareMemory(mountdevName->Name, dcb->MountPoint->Buffer,
mountdevName->NameLength) ==
mountdevName->NameLength) {
status = DokanEventRelease(vcb->DeviceObject, Irp);
} else {
DDbgPrint(" Deleted Mount Point doesn't match device excepted "
"mount point.\n");
}
}
// Or, if no requested mount point, we assume the first deleted one
// release devices
else {
status = DokanEventRelease(vcb->DeviceObject, Irp);
}
ExFreePool(symbolicLinkNameBuf);
} else {
DDbgPrint(" MountDev Name is undefined.\n");
}
} else {
DDbgPrint(" Mount Manager is not enabled for this device. Ignored.\n");
}
} break;
// case IOCTL_MOUNTDEV_UNIQUE_ID_CHANGE_NOTIFY:
// DDbgPrint(" IOCTL_MOUNTDEV_UNIQUE_ID_CHANGE_NOTIFY\n");
// break;
case IOCTL_MOUNTDEV_QUERY_STABLE_GUID:
DDbgPrint(" IOCTL_MOUNTDEV_QUERY_STABLE_GUID\n");
break;
case IOCTL_VOLUME_ONLINE:
DDbgPrint(" IOCTL_VOLUME_ONLINE\n");
status = STATUS_SUCCESS;
break;
case IOCTL_VOLUME_OFFLINE:
DDbgPrint(" IOCTL_VOLUME_OFFLINE\n");
status = STATUS_SUCCESS;
break;
case IOCTL_VOLUME_READ_PLEX:
DDbgPrint(" IOCTL_VOLUME_READ_PLEX\n");
break;
case IOCTL_VOLUME_PHYSICAL_TO_LOGICAL:
DDbgPrint(" IOCTL_VOLUME_PHYSICAL_TO_LOGICAL\n");
break;
case IOCTL_VOLUME_IS_CLUSTERED:
DDbgPrint(" IOCTL_VOLUME_IS_CLUSTERED\n");
break;
case IOCTL_VOLUME_PREPARE_FOR_CRITICAL_IO:
DDbgPrint(" IOCTL_VOLUME_PREPARE_FOR_CRITICAL_IO\n");
break;
case IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS: {
PVOLUME_DISK_EXTENTS volume;
ULONG bufferLength = irpSp->Parameters.DeviceIoControl.OutputBufferLength;
DDbgPrint(" IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS\n");
if (bufferLength < sizeof(VOLUME_DISK_EXTENTS)) {
status = STATUS_INVALID_PARAMETER;
Irp->IoStatus.Information = 0;
break;
}
volume = Irp->AssociatedIrp.SystemBuffer;
RtlZeroMemory(volume, sizeof(VOLUME_DISK_EXTENTS));
volume->NumberOfDiskExtents = 1;
Irp->IoStatus.Information = sizeof(VOLUME_DISK_EXTENTS);
status = STATUS_SUCCESS;
} break;
case IOCTL_STORAGE_EJECT_MEDIA: {
DDbgPrint(" IOCTL_STORAGE_EJECT_MEDIA\n");
DokanUnmount(dcb);
status = STATUS_SUCCESS;
} break;
case IOCTL_REDIR_QUERY_PATH_EX:
case IOCTL_REDIR_QUERY_PATH: {
PQUERY_PATH_RESPONSE pathResp;
BOOLEAN prefixOk = FALSE;
if (dcb->UNCName != NULL && dcb->UNCName->Length > 0) {
if (Irp->RequestorMode != KernelMode) {
break;
}
WCHAR *lpPath = NULL;
ULONG ulPath = 0;
if (irpSp->Parameters.DeviceIoControl.IoControlCode ==
IOCTL_REDIR_QUERY_PATH) {
PQUERY_PATH_REQUEST pathReq;
DDbgPrint(" IOCTL_REDIR_QUERY_PATH\n");
if (irpSp->Parameters.DeviceIoControl.InputBufferLength <
sizeof(QUERY_PATH_REQUEST)) {
status = STATUS_BUFFER_OVERFLOW;
break;
}
// Always a METHOD_NEITHER IOCTL
pathReq = (PQUERY_PATH_REQUEST)
irpSp->Parameters.DeviceIoControl.Type3InputBuffer;
DDbgPrint(" PathNameLength = %d\n", pathReq->PathNameLength);
DDbgPrint(" SecurityContext = %p\n", pathReq->SecurityContext);
DDbgPrint(" FilePathName = %.*ls\n",
(unsigned int)(pathReq->PathNameLength / sizeof(WCHAR)),
pathReq->FilePathName);
lpPath = pathReq->FilePathName;
ulPath = pathReq->PathNameLength / sizeof(WCHAR);
if (pathReq->PathNameLength >= dcb->UNCName->Length / sizeof(WCHAR)) {
prefixOk = (_wcsnicmp(pathReq->FilePathName, dcb->UNCName->Buffer,
dcb->UNCName->Length / sizeof(WCHAR)) == 0);
}
} else {
PQUERY_PATH_REQUEST_EX pathReqEx;
DDbgPrint(" IOCTL_REDIR_QUERY_PATH_EX\n");
if (irpSp->Parameters.DeviceIoControl.InputBufferLength <
sizeof(QUERY_PATH_REQUEST_EX)) {
status = STATUS_BUFFER_OVERFLOW;
break;
}
// Always a METHOD_NEITHER IOCTL
pathReqEx = (PQUERY_PATH_REQUEST_EX)
irpSp->Parameters.DeviceIoControl.Type3InputBuffer;
DDbgPrint(" pSecurityContext = %p\n", pathReqEx->pSecurityContext);
DDbgPrint(" EaLength = %d\n", pathReqEx->EaLength);
DDbgPrint(" pEaBuffer = %p\n", pathReqEx->pEaBuffer);
DDbgPrint(" PathNameLength = %d\n", pathReqEx->PathName.Length);
DDbgPrint(" FilePathName = %*ls\n",
(unsigned int)(pathReqEx->PathName.Length / sizeof(WCHAR)),
pathReqEx->PathName.Buffer);
lpPath = pathReqEx->PathName.Buffer;
ulPath = pathReqEx->PathName.Length / sizeof(WCHAR);
if (pathReqEx->PathName.Length >= dcb->UNCName->Length) {
prefixOk =
(_wcsnicmp(pathReqEx->PathName.Buffer, dcb->UNCName->Buffer,
dcb->UNCName->Length / sizeof(WCHAR)) == 0);
}
}
unsigned int i = 1;
for (;
i < ulPath && i * sizeof(WCHAR) < dcb->UNCName->Length && !prefixOk;
++i) {
if (_wcsnicmp(&lpPath[i], &dcb->UNCName->Buffer[i], 1) != 0) {
break;
}
if ((i + 1) * sizeof(WCHAR) < dcb->UNCName->Length) {
prefixOk = (dcb->UNCName->Buffer[i + 1] == L'\\');
}
}
if (!prefixOk) {
status = STATUS_BAD_NETWORK_PATH;
break;
}
for (; i < ulPath && i * sizeof(WCHAR) < dcb->UNCName->Length && prefixOk;
++i) {
if (_wcsnicmp(&lpPath[i], &dcb->UNCName->Buffer[i], 1) != 0) {
prefixOk = FALSE;
}
}
if (!prefixOk) {
status = STATUS_BAD_NETWORK_NAME;
break;
}
pathResp = (PQUERY_PATH_RESPONSE)Irp->UserBuffer;
pathResp->LengthAccepted = dcb->UNCName->Length;
status = STATUS_SUCCESS;
}
} break;
case IOCTL_STORAGE_GET_MEDIA_TYPES_EX: {
PGET_MEDIA_TYPES mediaTypes = NULL;
PDEVICE_MEDIA_INFO mediaInfo = NULL; //&mediaTypes->MediaInfo[0];
// We alway return only one media type
DDbgPrint(" IOCTL_STORAGE_GET_MEDIA_TYPES_EX\n");
if (outputLength < sizeof(GET_MEDIA_TYPES)) {
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = 0;
break;
}
mediaTypes = (PGET_MEDIA_TYPES)Irp->AssociatedIrp.SystemBuffer;
ASSERT(mediaTypes != NULL);
mediaInfo = &mediaTypes->MediaInfo[0];
mediaTypes->DeviceType = FILE_DEVICE_VIRTUAL_DISK;
mediaTypes->MediaInfoCount = 1;
PDISK_GEOMETRY diskGeometry = ExAllocatePool(sizeof(DISK_GEOMETRY));
if (diskGeometry == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
RtlZeroMemory(diskGeometry, sizeof(*diskGeometry));
DokanPopulateDiskGeometry(diskGeometry);
mediaInfo->DeviceSpecific.DiskInfo.MediaType = diskGeometry->MediaType;
mediaInfo->DeviceSpecific.DiskInfo.NumberMediaSides = 1;
mediaInfo->DeviceSpecific.DiskInfo.MediaCharacteristics =
(MEDIA_CURRENTLY_MOUNTED | MEDIA_READ_WRITE);
mediaInfo->DeviceSpecific.DiskInfo.Cylinders.QuadPart =
diskGeometry->Cylinders.QuadPart;
mediaInfo->DeviceSpecific.DiskInfo.TracksPerCylinder =
diskGeometry->TracksPerCylinder;
mediaInfo->DeviceSpecific.DiskInfo.SectorsPerTrack =
diskGeometry->SectorsPerTrack;
mediaInfo->DeviceSpecific.DiskInfo.BytesPerSector =
diskGeometry->BytesPerSector;
ExFreePool(diskGeometry);
status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(GET_MEDIA_TYPES);
} break;
case IOCTL_STORAGE_GET_DEVICE_NUMBER: {
PSTORAGE_DEVICE_NUMBER deviceNumber;
DDbgPrint(" IOCTL_STORAGE_GET_DEVICE_NUMBER\n");
if (outputLength < sizeof(STORAGE_DEVICE_NUMBER)) {
status = STATUS_BUFFER_TOO_SMALL;
Irp->IoStatus.Information = sizeof(STORAGE_DEVICE_NUMBER);
break;
}
deviceNumber = (PSTORAGE_DEVICE_NUMBER)Irp->AssociatedIrp.SystemBuffer;
ASSERT(deviceNumber != NULL);
deviceNumber->DeviceType = FILE_DEVICE_VIRTUAL_DISK;
if (vcb) {
deviceNumber->DeviceType = vcb->DeviceObject->DeviceType;
}
deviceNumber->DeviceNumber = 0; // Always one volume only per disk device
deviceNumber->PartitionNumber = (ULONG)-1; // Not partitionable
Irp->IoStatus.Information = sizeof(STORAGE_DEVICE_NUMBER);
status = STATUS_SUCCESS;
} break;
default:
PrintUnknownDeviceIoctlCode(
irpSp->Parameters.DeviceIoControl.IoControlCode);
status = STATUS_INVALID_DEVICE_REQUEST;
break;
}
DDbgPrint(" <= DokanDiskDeviceControl\n");
return status;
}