DrvDbOpenObjectRegKey

NTSTATUS __stdcall DrvDbOpenObjectRegKey(
        _DRVDB_CONTEXT *pDrvDbCtx,
        _UNICODE_STRING *DatabaseNode,
        _DRVDB_BASE_KEY_TYPE BaseKeyType,
        WCHAR *ObjectName,
        _ACCESS_MASK Create,
        UINT8 BaseKeyHandle,
        VOID **Disposition,
        UINT64 *a8){
  NTSTATUS ObjectDatabaseNode; 
  _DRVDB_BASE_KEY_TYPE v12; 
  _UNICODE_STRING *v13; 
  int Tree; 
  _DRVDB_NODE *i; 
  NTSTATUS v16; 
  _DRVDB_BASE_KEY_TYPE v17; 
  NTSTATUS v19; 
  HPNPCTX *v20; 
  NTSTATUS v21; 
  _SECURITY_IMPERSONATION_LEVEL DesiredAccess; 
  UINT64 DesiredAccessa; 
  PVOID hKey; 
  UINT8 EffectiveOnly[8]; 
  WCHAR *CopyOnOpen; 
  _UNICODE_STRING **v28; 

  CopyOnOpen = ObjectName;
  hKey = 0i64;
  *(_QWORD *)EffectiveOnly = 0i64;
  ObjectDatabaseNode = DrvDbGetObjectDatabaseNode(
                         (_ETHREAD *)pDrvDbCtx,
                         ObjectName,
                         (UINT8)&CopyOnOpen,
                         (UINT8)EffectiveOnly,
                         DesiredAccess);
  v13 = *(_UNICODE_STRING **)EffectiveOnly;
  Tree = ObjectDatabaseNode;
  if( ObjectDatabaseNode < 0 )
    goto LABEL_12;
  if( !*(_QWORD *)EffectiveOnly )
  {
    v13 = DatabaseNode;
    if( !DatabaseNode )
    {
      for( i = (_DRVDB_NODE *)*((_QWORD *)pDrvDbCtx + 2); i != pDrvDbCtx + 4; i = *(_DRVDB_NODE **)i )
      {
        v13 = (_UNICODE_STRING *)i;
        v16 = DrvDbAcquireDatabaseNodeBaseKey(pDrvDbCtx, i, BaseKeyType, &hKey);
        Tree = v16;
        if( v16 == -1073740697 )
        {
          Tree = -1073741772;
        }
        else
        {
          if( v16 < 0 )
            break;
          LODWORD(DesiredAccessa) = Create;
          Tree = PnpCtxRegOpenKey(*(HPNPCTX **)pDrvDbCtx, hKey, CopyOnOpen, 0i64, DesiredAccessa, Disposition);
          DrvDbReleaseDatabaseNodeBaseKey(pDrvDbCtx, i, v17, hKey);
          hKey = 0i64;
          if( Tree != -1073741772 )
            goto LABEL_9;
        }
      }
      if( Tree == -1073741772 )
      {
        if( !BaseKeyHandle )
          goto LABEL_12;
        v13 = (_UNICODE_STRING *)*((_QWORD *)pDrvDbCtx + 4);
        v21 = DrvDbAcquireDatabaseNodeBaseKey(pDrvDbCtx, (_DRVDB_NODE *)v13, BaseKeyType, &hKey);
        Tree = v21;
        if( v21 < 0 )
        {
          if( v21 == -1073740697 )
            Tree = -1073741662;
          goto LABEL_12;
        }
        LODWORD(DesiredAccessa) = Create;
        Tree = PnpCtxRegCreateTree(
                 *(HPNPCTX **)pDrvDbCtx,
                 hKey,
                 CopyOnOpen,
                 0i64,
                 DesiredAccessa,
                 0i64,
                 Disposition,
                 0i64);
        if( Tree < 0 )
          goto LABEL_12;
      }
LABEL_9:
      if( Tree >= 0 && v28 )
        *v28 = v13;
      goto LABEL_12;
    }
  }
  v19 = DrvDbAcquireDatabaseNodeBaseKey(pDrvDbCtx, (_DRVDB_NODE *)v13, BaseKeyType, &hKey);
  Tree = v19;
  if( v19 >= 0 )
  {
    v20 = *(HPNPCTX **)pDrvDbCtx;
    if( BaseKeyHandle )
    {
      LODWORD(DesiredAccessa) = Create;
      Tree = PnpCtxRegCreateTree(v20, hKey, CopyOnOpen, 0i64, DesiredAccessa, 0i64, Disposition, a8);
    }
    else
    {
      LODWORD(DesiredAccessa) = Create;
      Tree = PnpCtxRegOpenKey(v20, hKey, CopyOnOpen, 0i64, DesiredAccessa, Disposition);
      if( Tree < 0 )
        goto LABEL_12;
      if( a8 )
        *(_DWORD *)a8 = 2;
    }
    goto LABEL_9;
  }
  if( v19 == -1073740697 )
    Tree = -1073741772;
LABEL_12:
  if( hKey )
    DrvDbReleaseDatabaseNodeBaseKey(pDrvDbCtx, (_DRVDB_NODE *)v13, v12, hKey);
  return Tree;
}

Referenced by: