Subject: Re: Pluged : USBd for NetBSD ?
To: Steven M. Bellovin <email@example.com>
From: Jachym Holecek <firstname.lastname@example.org>
Date: 01/19/2005 18:04:06
> >> And if someone inserts a pcmcia card?
> >> I think in -current syslogd can handle this (though this might not be
> >> the obvious solution). And of course for network cards there is ifwatchd.
> >If you mean parsing kernel printfs, I don't think that's enough. You
> >can't easily tell a failed attach attempt that way.
Actually, it's enough to clear DVF_ACTIVE when attach fails, as should
be done anyway AFAIU.
> >Or does -current syslogd have a new feature I'm missing?
> The problem isn't syslogd, it's the kernel -- does it print the
> messages you want for each situation?
For regular devices, autoconf(9) can provide attach/detach/activate/
deactivate events in a straighforward way [*]. For removable media,
the controller would have to inject events manually, say:
devannounce(&sc->sc_dev, MEDIA, 0); /* media gone */
devannounce(&sc->sc_dev, MEDIA, 1); /* media inserted */
Are there other important events userland might be interested in?
-- Jachym Holecek
[*] Network interface drivers are a bit special, but there's already
an interface covering them.