The ltem driver provides a general-purpose ANSI interface to the system console device. ltem is a layered device driver which on one side provides the kernel with a consistent interface to the system console device (and therefore to the console framebuffer) and on the other side uses ioctls to send data to the framebuffer driver (see visual_io(7I)).
The following ioctl(2) calls are supported:
Notifies ltem that the resolution of the underlying framebuffer has been changed. ltem will stop console output, notify the framebuffer (by passing this ioctl on), reset the terminal emulator (using the VIS_DEVFINI and VIS_DEVINIT ioctls), and allow console output again.