Re: Major device numbers and mem device redesign

[Mark Murray]

> Yes.  Each instance of make_dev() takes a cdevsw argument for the minor numbe
r
> in question.  So, you could have /dev/mem read/write/ioctl etc routines
> for major 2, minor 0 and 1, while have minors 3 and 4 being installed with
> their own open/close/read/write/etc routines.
> 
> Devices are looked up as a hash of major+minor, and the devsw entries from
> that point on.

OK - how do the

switch (minor(dev)) {

        /* stuff */'

        default:
                return ENXIO;
}

cases get handled? By the hashing routine?

Can these be hunted down and killed?

M
--
Mark Murray
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