RTEMS 4.9.2 On-Line Library

I/O Manager IO_LOOKUP_NAME - Lookup a device

RTEMS C User's Guide

rtems_status_code rtems_io_lookup_name(
  const char                *name,
  rtems_driver_name_t       *device_info
);

RTEMS_SUCCESSFUL - successfully initialized
RTEMS_UNSATISFIED - name not registered

This directive returns the major/minor number pair associated with the given device name in device_info.

This directive will not cause the calling task to be preempted.

RTEMS C User's Guide