The HyperNews Linux KHG Discussion Pages

## How to call ioctl from driver used by other process?

  Forum: Device Drivers
  Keywords: ioctl, device driver
  Date: Thu, 11 Jun 1998 17:38:45 GMT
  From: Pavel Tkatchouk <ptkatcho@portal.ca>

Our (odd) parport services a few devices: - touch screen controller; - LCD's backlight gate; - cash drawers; Generally, it just reads data from touch controller, to supply X with events, but when I want to turn on/off backlight I have to call its ioctl() entries. The problem is that I want to control backlight from Java. Ideas? Thanks, Pavel