Symbol: KDADDIO
drivers/tty/vt/vt_ioctl.c
1090
case KDADDIO:
drivers/tty/vt/vt_ioctl.c
337
case KDADDIO:
drivers/tty/vt/vt_ioctl.c
348
return ksys_ioperm(arg, 1, (cmd == KDADDIO)) ? -ENXIO : 0;