PnpCompileDeviceInstancePaths

__int64 __fastcall PnpCompileDeviceInstancePaths(int a1, _RELATION_LIST *a2, char a3, char a4, _QWORD *a5){
  unsigned int v5; 
  _QWORD *v10; 
  int v11; 
  _DWORD *DeviceNode; 
  VOID **CriticalMemory; 
  VOID **v14; 
  _DWORD *v15; 
  _QWORD *v16; 
  const VOID *v17; 
  _WORD *v18; 
  _RELATION_LIST_MARKER Marker; 
  _DEVICE_OBJECT *DeviceObject; 
  _DEVICE_RELATION_LEVEL RelationLevel; 

  v5 = 0;
  DeviceObject = 0i64;
  RelationLevel = RELATION_LEVEL_REMOVE_EJECT;
  if( !a2 )
    __fastfail(5u);
  v10 = a5;
  v11 = 0;
  Marker = 0i64;
  *a5 = 0i64;
  while( IopEnumerateRelations(a2, &Marker, &DeviceObject, &RelationLevel, 0i64) )
  {
    if( DeviceObject )
      DeviceNode = DeviceObject->DeviceObjectExtension->DeviceNode;
    else
      DeviceNode = 0i64;
    if( DeviceNode && (!a4 || (DeviceNode[176] & 2) == 0) && *((_QWORD *)DeviceNode + 6) && (!a3 || RelationLevel) )
      v11 += *((unsigned __int16 *)DeviceNode + 20) + 2;
  }
  CriticalMemory = PnpAllocateCriticalMemory(a1, PagedPool, (unsigned int)(v11 + 2), 0x4B706E50u);
  *v10 = CriticalMemory;
  v14 = CriticalMemory;
  if( CriticalMemory )
  {
    Marker = (_RELATION_LIST_MARKER)2i64;
    while( IopEnumerateRelations(a2, &Marker, &DeviceObject, &RelationLevel, 0i64) )
    {
      if( DeviceObject )
        v15 = DeviceObject->DeviceObjectExtension->DeviceNode;
      else
        v15 = 0i64;
      if( v15 && (!a4 || (v15[176] & 2) == 0) && *((_QWORD *)v15 + 6) && (!a3 || RelationLevel) )
      {
        v16 = DeviceObject->DeviceObjectExtension->DeviceNode;
        if( v16 )
        {
          v17 = (const VOID *)v16[6];
          if( v17 )
          {
            memmove(v14, v17, *((unsigned __int16 *)v16 + 20));
            v18 = (_WORD *)v14 + ((unsigned __int64)*((unsigned __int16 *)v16 + 20) >> 1);
            *v18 = 0;
            v14 = (VOID **)(v18 + 1);
          }
        }
      }
    }
    *(_WORD *)v14 = 0;
  }
  else
  {
    return(unsigned int)-1073741670;
  }
  return v5;
}

Referenced by: