MmGetSessionObjectById

NTSTATUS __stdcall MmGetSessionObjectById(UINT64 SessionId){
  unsigned int(__fastcall *GetDmaAlignment)(_DMA_ADAPTER *); 
  struct _DMA_ADAPTER *v2; 
  struct _DMA_ADAPTER *v3; 
  _DMA_OPERATIONS *DmaOperations; 
  struct _KLOCK_QUEUE_HANDLE LockHandle; 
  memset(&LockHandle, 0, sizeof(LockHandle));
  LODWORD(GetDmaAlignment) = 0;
  LODWORD(v2) = MmGetSessionById(SessionId);
  v3 = v2;
  if( v2 )
  {
    DmaOperations = v2[85].DmaOperations;
    GetDmaAlignment = DmaOperations->GetDmaAlignment;
    KeAcquireInStackQueuedSpinLock(&WorkerRoutine, &LockHandle);
    if( (*(&DmaOperations->Size + 1) & 2) != 0 )
      LODWORD(GetDmaAlignment) = 0;
    else
      ObfReferenceObjectWithTag(GetDmaAlignment, 0x746C6644u);
    KeReleaseInStackQueuedSpinLockFromDpcLevel(&LockHandle);
    __writecr8(LockHandle.OldIrql);
    HalPutDmaAdapter(v3);
  }
  return(int)GetDmaAlignment;
}

Referenced by: