rtf - real-time fifo devices
#include <rtl_fifo.h>
rtf[0-63] are character devices for the real-time FIFOs; they have major number 150 and minor numbers 0-63.
The following ioctl(2) calls are supported:
/dev/rtf*
The RT-FIFO driver was written by Michael Barabanov.
mknod(1), chown(1), chmod(1)