// start event dispatching
NTSTATUS
DokanEventStart(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
{
ULONG outBufferLen;
ULONG inBufferLen;
PVOID buffer;
PIO_STACK_LOCATION irpSp;
EVENT_START eventStart;
PEVENT_DRIVER_INFO driverInfo;
PDOKAN_GLOBAL dokanGlobal;
PDokanDCB dcb;
NTSTATUS status;
DEVICE_TYPE deviceType;
ULONG deviceCharacteristics;
WCHAR baseGuidString[64];
GUID baseGuid = DOKAN_BASE_GUID;
UNICODE_STRING unicodeGuid;
ULONG deviceNamePos;
DDbgPrint("==> DokanEventStart\n");
dokanGlobal = DeviceObject->DeviceExtension;
if (GetIdentifierType(dokanGlobal) != DGL) {
return STATUS_INVALID_PARAMETER;
}
irpSp = IoGetCurrentIrpStackLocation(Irp);
outBufferLen = irpSp->Parameters.DeviceIoControl.OutputBufferLength;
inBufferLen = irpSp->Parameters.DeviceIoControl.InputBufferLength;
if (outBufferLen != sizeof(EVENT_DRIVER_INFO) ||
inBufferLen != sizeof(EVENT_START)) {
return STATUS_INSUFFICIENT_RESOURCES;
}
RtlCopyMemory(&eventStart, Irp->AssociatedIrp.SystemBuffer, sizeof(EVENT_START));
driverInfo = Irp->AssociatedIrp.SystemBuffer;
if (eventStart.UserVersion != DOKAN_DRIVER_VERSION) {
driverInfo->DriverVersion = DOKAN_DRIVER_VERSION;
driverInfo->Status = DOKAN_START_FAILED;
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(EVENT_DRIVER_INFO);
return STATUS_SUCCESS;
}
deviceCharacteristics = FILE_DEVICE_IS_MOUNTED;
switch (eventStart.DeviceType) {
case DOKAN_DISK_FILE_SYSTEM:
deviceType = FILE_DEVICE_DISK_FILE_SYSTEM;
break;
case DOKAN_NETWORK_FILE_SYSTEM:
deviceType = FILE_DEVICE_NETWORK_FILE_SYSTEM;
deviceCharacteristics |= FILE_REMOTE_DEVICE;
break;
default:
DDbgPrint(" Unknown device type: %d\n", eventStart.DeviceType);
deviceType = FILE_DEVICE_DISK_FILE_SYSTEM;
}
if (eventStart.Flags & DOKAN_EVENT_REMOVABLE) {
DDbgPrint(" DeviceCharacteristics |= FILE_REMOVABLE_MEDIA\n");
deviceCharacteristics |= FILE_REMOVABLE_MEDIA;
}
baseGuid.Data2 = (USHORT)(dokanGlobal->MountId & 0xFFFF) ^ baseGuid.Data2;
baseGuid.Data3 = (USHORT)(dokanGlobal->MountId >> 16) ^ baseGuid.Data3;
status = RtlStringFromGUID(&baseGuid, &unicodeGuid);
if (!NT_SUCCESS(status)) {
return status;
}
RtlZeroMemory(baseGuidString, sizeof(baseGuidString));
RtlStringCchCopyW(baseGuidString, sizeof(baseGuidString) / sizeof(WCHAR), unicodeGuid.Buffer);
RtlFreeUnicodeString(&unicodeGuid);
InterlockedIncrement(&dokanGlobal->MountId);
KeEnterCriticalRegion();
ExAcquireResourceExclusiveLite(&dokanGlobal->Resource, TRUE);
status = DokanCreateDiskDevice(
DeviceObject->DriverObject,
dokanGlobal->MountId,
baseGuidString,
dokanGlobal,
deviceType,
deviceCharacteristics,
&dcb);
if (!NT_SUCCESS(status)) {
ExReleaseResourceLite(&dokanGlobal->Resource);
KeLeaveCriticalRegion();
return status;
}
DDbgPrint(" MountId:%d\n", dcb->MountId);
driverInfo->DeviceNumber = dokanGlobal->MountId;
driverInfo->MountId = dokanGlobal->MountId;
driverInfo->Status = DOKAN_MOUNTED;
driverInfo->DriverVersion = DOKAN_DRIVER_VERSION;
// SymbolicName is \\DosDevices\\Global\\Volume{D6CC17C5-1734-4085-BCE7-964F1E9F5DE9}
// Finds the last '\' and copy into DeviceName.
// DeviceName is \Volume{D6CC17C5-1734-4085-BCE7-964F1E9F5DE9}
deviceNamePos = dcb->SymbolicLinkName->Length / sizeof(WCHAR) - 1;
for (; dcb->SymbolicLinkName->Buffer[deviceNamePos] != L'\\'; --deviceNamePos)
;
RtlStringCchCopyW(driverInfo->DeviceName,
sizeof(driverInfo->DeviceName) / sizeof(WCHAR),
&(dcb->SymbolicLinkName->Buffer[deviceNamePos]));
DDbgPrint(" DeviceName:%ws\n", driverInfo->DeviceName);
DokanUpdateTimeout(&dcb->TickCount, DOKAN_KEEPALIVE_TIMEOUT);
dcb->UseAltStream = 0;
if (eventStart.Flags & DOKAN_EVENT_ALTERNATIVE_STREAM_ON) {
DDbgPrint(" ALT_STREAM_ON\n");
dcb->UseAltStream = 1;
}
dcb->UseKeepAlive = 0;
if (eventStart.Flags & DOKAN_EVENT_KEEP_ALIVE_ON) {
DDbgPrint(" KEEP_ALIVE_ON\n");
dcb->UseKeepAlive = 1;
}
dcb->Mounted = 1;
DokanStartEventNotificationThread(dcb);
DokanStartCheckThread(dcb);
ExReleaseResourceLite(&dokanGlobal->Resource);
KeLeaveCriticalRegion();
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(EVENT_DRIVER_INFO);
DDbgPrint("<== DokanEventStart\n");
return Irp->IoStatus.Status;
}
// start event dispatching
NTSTATUS
DokanEventStart(
__in PDEVICE_OBJECT DeviceObject,
__in PIRP Irp
)
{
ULONG outBufferLen;
ULONG inBufferLen;
PVOID buffer;
PIO_STACK_LOCATION irpSp;
EVENT_START eventStart;
PEVENT_DRIVER_INFO driverInfo;
PDOKAN_GLOBAL dokanGlobal;
PDokanDCB dcb;
NTSTATUS status;
DEVICE_TYPE deviceType;
ULONG deviceCharacteristics;
DDbgPrint("==> DokanEventStart\n");
dokanGlobal = DeviceObject->DeviceExtension;
if (GetIdentifierType(dokanGlobal) != DGL) {
return STATUS_INVALID_PARAMETER;
}
irpSp = IoGetCurrentIrpStackLocation(Irp);
outBufferLen = irpSp->Parameters.DeviceIoControl.OutputBufferLength;
inBufferLen = irpSp->Parameters.DeviceIoControl.InputBufferLength;
if (outBufferLen != sizeof(EVENT_DRIVER_INFO) ||
inBufferLen != sizeof(EVENT_START)) {
return STATUS_INSUFFICIENT_RESOURCES;
}
RtlCopyMemory(&eventStart, Irp->AssociatedIrp.SystemBuffer, sizeof(EVENT_START));
driverInfo = Irp->AssociatedIrp.SystemBuffer;
if (eventStart.UserVersion != DOKAN_VERSION) {
driverInfo->DriverVersion = DOKAN_VERSION;
driverInfo->Status = DOKAN_START_FAILED;
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(EVENT_DRIVER_INFO);
return STATUS_SUCCESS;
}
deviceCharacteristics = FILE_DEVICE_IS_MOUNTED;
switch (eventStart.DeviceType) {
case DOKAN_DISK_FILE_SYSTEM:
deviceType = FILE_DEVICE_DISK_FILE_SYSTEM;
break;
case DOKAN_NETWORK_FILE_SYSTEM:
deviceType = FILE_DEVICE_NETWORK_FILE_SYSTEM;
deviceCharacteristics |= FILE_REMOTE_DEVICE;
break;
default:
DDbgPrint(" Unknown device type: %d\n", eventStart.DeviceType);
deviceType = FILE_DEVICE_DISK_FILE_SYSTEM;
}
if (eventStart.Flags & DOKAN_EVENT_REMOVABLE) {
DDbgPrint(" DeviceCharacteristics |= FILE_REMOVABLE_MEDIA\n");
deviceCharacteristics |= FILE_REMOVABLE_MEDIA;
}
KeEnterCriticalRegion();
ExAcquireResourceExclusiveLite(&dokanGlobal->Resource, TRUE);
status = DokanCreateDiskDevice(
DeviceObject->DriverObject,
dokanGlobal->MountId,
dokanGlobal,
deviceType,
deviceCharacteristics,
&dcb);
if (!NT_SUCCESS(status)) {
ExReleaseResourceLite(&dokanGlobal->Resource);
KeLeaveCriticalRegion();
return status;
}
DDbgPrint(" MountId:%d\n", dcb->MountId);
driverInfo->DeviceNumber = dokanGlobal->MountId;
driverInfo->MountId = dokanGlobal->MountId;
driverInfo->Status = DOKAN_MOUNTED;
driverInfo->DriverVersion = DOKAN_VERSION;
dcb->Mounted = eventStart.DriveLetter;
DokanUpdateTimeout(&dcb->TickCount, DOKAN_KEEPALIVE_TIMEOUT);
dcb->UseAltStream = 0;
if (eventStart.Flags & DOKAN_EVENT_ALTERNATIVE_STREAM_ON) {
DDbgPrint(" ALT_STREAM_ON\n");
dcb->UseAltStream = 1;
}
dcb->UseKeepAlive = 0;
if (eventStart.Flags & DOKAN_EVENT_KEEP_ALIVE_ON) {
DDbgPrint(" KEEP_ALIVE_ON\n");
dcb->UseKeepAlive = 1;
}
DokanStartEventNotificationThread(dcb);
DokanStartCheckThread(dcb);
ExReleaseResourceLite(&dokanGlobal->Resource);
KeLeaveCriticalRegion();
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(EVENT_DRIVER_INFO);
InterlockedIncrement(&dokanGlobal->MountId);
DDbgPrint("<== DokanEventStart\n");
return Irp->IoStatus.Status;
}
