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");
}
PEVENT_CONTEXT
AllocateEventContext(__in PDokanDCB Dcb, __in PIRP Irp,
__in ULONG EventContextLength, __in_opt PDokanCCB Ccb) {
PEVENT_CONTEXT eventContext;
eventContext = AllocateEventContextRaw(EventContextLength);
if (eventContext == NULL) {
return NULL;
}
SetCommonEventContext(Dcb, eventContext, Irp, Ccb);
eventContext->SerialNumber = InterlockedIncrement((LONG *)&Dcb->SerialNumber);
return eventContext;
}
