CD locking (was Re: is magicdev evil?)

[Harald Hoyer]

I took out O_EXCL from the cd burning apps, because the errata kernels
changed their behaviour regarding to O_EXCL, so that it was impossible
to burn a CD in any case.
This has to be reworked with the kernel people.

And btw, apps accessing the device have to open with O_EXCL also...
In an ideal world, O_EXCL would block all other open attempts, so that
it is sufficient to O_EXCL with the CD burning apps... sadly there is no
such mechanism (yet?).


Am Di, 2003-10-07 um 00.03 schrieb Owen Taylor:
> On Mon, 2003-10-06 at 17:27, Christopher A. Williams wrote:
> 
> > I noticed that magicdev seems to really interfere with XCDRoast 0.98a14
> > but not the earlier version. GNOME Toaster is also OK. I noticed on the
> > XCDRoast page that 0.98a14 apparently includes a totally rewritten
> > subsystem for disk reads and writes. Part of the problem could be
> > there...
> 
> Harald - what's the situation here supposed to be currently? 
> I thought that we figured something out where:
>  
>  - All CD burnings open the device with O_EXCL
>  - Apps accessing the device otherwise (magicdev, etc.) do nothing
>    special
> 
> Was going to fix the problem, but I don't see anything in the current
> xcdroast package (0.98a13) to open devices O_EXCL.
> 
> Thanks,
> 						Owen
-- 
Harald Hoyer, Senior Software Engineer  Harald.Hoyer at redhat.de
Red Hat GmbH                       Tel. : +49-711-96437-0
D-70178 Stuttgart, Germany         Web  : http://www.redhat.de
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