Hi!
> > Well, if we did something like modify(int fd, char *how), you could do
> >
> > modify(0, "nonblock,9600")
>
> What you're really proposing is to make ioctl's be ASCII strings.
Yup.
> Which is not necessarily a bad idea, and I think plan9 did something
> similar (or rather, if I remember correctly, plan9 has control streams
> that were ASCII. Or am I confused?).
I think that plan9 uses something different -- they have ttyS0 and
ttyS0ctl. This would leave us with problem "how do I get handle to
ttyS0ctl when I only have handle to ttyS0"?
...
> However, you can't really use a string. It would really have to be two
> memory regions: incoming and outgoing, with an ASCII representation being
> the _preferred_ method for stuff that isn't obviously structured or
> performance-critical.
What are cases where it is usefull to pass data back from kernel?
...aha, serial controls include possibility to read stuff, right?
Pavel
-- The best software in life is free (not shareware)! Pavel GCM d? s-: !g p?:+ au- a--@ w+ v- C++@ UL+++ L++ N++ E++ W--- M- Y- R+ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Wed May 23 2001 - 21:00:34 EST