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Re: netbsd-7 kernel and older vnconfig(8)
Date: Mon, 9 Nov 2015 10:26:28 -0500
From: christos%zoulas.com@localhost (Christos Zoulas)
| Yes, and this works because &vnd->sc_dkdev returns the offset from NULL
| of sc_dkdev.
Yes, I know what happens there...
| Since the disk ioctl never touches it (dereferences it),
But I didn't go to check that, and I doubt that assuming it will always
be true (or expecting someone changing that code to know that dereferencing
the param is not safe in this case) is a very good idea.
I also don't think it can ever actually happen, that is, I don't think
just returning ENXIO in the NULL case (whatever the ioctl cmd) would do
any harm, or break anything.
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