> This is not good enough, IMHO. Alexey Dejneka sent in a patch for gnumach
> that does the same, and it works just fine. But after doing:
>
> settrans -ag /cdrom
>
> you have to do
>
> settrans -ag /dev/hd3
>
> (or whatever your CD ROM device is) as well, or the CD ROM remains busy.
Ok. I think there are two lines of inquiry here. Firstly, storeio
definitely needs to be fixed; this is a bug. What storeio should do is
keep track of the number of peropens and when there are no live peropens
for the device, it should deactivate the store. (Incidentally, I think
that the changes I made to close and reopen the store should instead just
clear/set the STORE_INACTIVE flag after opening with STORE_INACTIVE.)
That will make things work right when everything is well-behaved.
For another level of robustness, we might want to think about having a
revoke-like call at the kernel device level.
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