dev_type_close
(dev_type_open((*))) enodev, (dev_type_close((*))) enodev, \
(dev_type_open((*))) enodev, (dev_type_close((*))) enodev, \
(dev_type_open((*))) enodev, (dev_type_close((*))) enodev, \
dev_init(c,n,open), (dev_type_close((*))) nullop, dev_init(c,n,read), \
dev_init(c,n,open), (dev_type_close((*))) enodev, \