ExQueryHandleExceptionsPermanency

VOID __stdcall ExQueryHandleExceptionsPermanency(
        _HANDLE_TABLE *HandleTable,
        UINT8 *HandleExceptionsOn,
        UINT8 *HandleExceptionsPermanent){
  _ETHREAD *CurrentThread; 
  unsigned __int64 p_HandleTableLock; 
  _HANDLE_TRACE_DEBUG_INFO *DebugInfo; 
  _ETHREAD *v9; 
  unsigned int SessionId; 
  unsigned __int8 v11; 
  int v12; 
  bool v13; 
  __int64 v14; 
  _KLOCK_ENTRY *v15; 
  __int64 v16; 
  UINT64 a3; 

  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  --CurrentThread->Tcb.KernelApcDisable;
  p_HandleTableLock = (unsigned __int64)&HandleTable->HandleTableLock;
  ExAcquirePushLockExclusiveEx(&HandleTable->HandleTableLock, 0i64);
  DebugInfo = HandleTable->DebugInfo;
  if( DebugInfo )
  {
    *HandleExceptionsOn = 1;
    LOBYTE(DebugInfo) = (DebugInfo->BitMaskFlags & 8) != 0;
  }
  else if( (HandleTable->Flags & 2) != 0 )
  {
    *HandleExceptionsOn = 1;
    LOBYTE(DebugInfo) = 1;
  }
  else
  {
    *HandleExceptionsOn = 0;
  }
  *HandleExceptionsPermanent = (unsigned __int8)DebugInfo;
  if( (_InterlockedExchangeAdd64((volatile signed __int64 *)p_HandleTableLock, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
    ExfTryToWakePushLock((_EX_PUSH_LOCK *)p_HandleTableLock);
  LODWORD(a3) = 0;
  v9 = (_ETHREAD *)KeGetCurrentThread();
  if( MiGetSystemRegionType(p_HandleTableLock) == 1 )
    SessionId = MmGetSessionIdEx(v9->Tcb.ApcState.Process);
  else
    SessionId = -1;
  --v9->Tcb.SpecialApcDisable;
  v11 = ++v9->Tcb.AbAllocationRegionCount;
  v12 = ((char)v9->Tcb.AbEntrySummary | (char)v9->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
  while( 1 )
  {
    v13 = !_BitScanReverse((unsigned int *)&v14, v12);
    if( v13 )
      break;
    v15 = &v9->Tcb.LockEntries[v14];
    v12 &= ~(1 << v14);
    if( (v15->AcquiredByte & 1) != 0
      && (v15->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
      && (v15->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == (p_HandleTableLock & 0x7FFFFFFFFFFFFFFCi64)
      && v15->LockState.SessionId == SessionId )
    {
      v15->AcquiredByte &= ~1u;
      if( v15->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
      {
        if( v15 )
        {
          v15->CrossThreadReleasableAndBusyByte |= 2u;
          if( v15->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
            KiAbEntryRemoveFromTree(v15);
          LODWORD(a3) = v15->BoostBitmap.AllFields & 0x1FFFF;
          v15->BoostBitmap.AllFields &= 0xFFFE0000;
          v15->ThreadLocalFlags &= ~1u;
          v15->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
          v16 = v15 - v9->Tcb.LockEntries;
          if( v11 == 1 )
            v9->Tcb.AbEntrySummary |= 1 << v16;
          else
            _InterlockedOr8((volatile signed __int8 *)&v9->Tcb.AbOrphanedEntrySummary, 1 << v16);
          goto LABEL_20;
        }
        break;
      }
    }
  }
  if( (*(&v9->Tcb.MiscFlags + 1) & 0x10000) == 0 )
    KeBugCheckEx(0x162u, v9, (PVOID)p_HandleTableLock, (PVOID)SessionId, 0i64);
LABEL_20:
  --v9->Tcb.AbAllocationRegionCount;
  KiAbThreadRemoveBoosts(&v9->Tcb, (VOID *)p_HandleTableLock, &a3);
  v13 = v9->Tcb.SpecialApcDisable++ == -1;
  if( v13 && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)v9->Tcb.ApcState.ApcListHead[0].Flink != &v9->Tcb.152 )
    KiCheckForKernelApcDelivery();
  KeLeaveCriticalRegionThread(&CurrentThread->Tcb);
}

Referenced by: