Re: setleds source and ppp

Re: setleds source and ppp

[Andries.Brouwer]

> after each byte, downloaded from the internet, the CAPS LOCK led blinks.

[poor you - you must have a slow connection]

Two possibilities: (i) blink from user space,
(ii) blink from kernel space.

There is a program setleds in the kbd distribution that sets the leds.
Source fragment:

int setleds(char leds) {
    if (ioctl(0, KDSETLED, leds)) {
        perror("KDSETLED");
        return -1;
    }
    return 0;
}

There is also a kernel routine that accepts kernel calls:

See keyboard.c, routines register_leds(), setledstate().
In ancient times people used this for "blinkenlights".
Have not checked recently whether this still works.

Andries

cc'd to l-k -- no doubt there are people that'll want to play
with the lights again