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Re: adduser Pre-Depends for qemu-system-common

On Thu, Mar 14, 2013 at 10:28:23PM +0100, Jakub Wilk wrote:
> * Serge Hallyn <serge.hallyn@ubuntu.com>, 2013-03-14, 14:58:
> >qemu-system-common installs a udev rules file which sets /dev/kvm
> >group to 'kvm'. Its postinst then adds a kvm group.  However udev
> >reads the new rules file as soon as it sees it, sees that group
> >kvm doesn't exist, and ignores that part of the rule (until
> >reboot, udev restart, or the rule is re-added, of course).

> >To fix this the kvm group should be created during preinst before
> >the udev rules file is unpacked. This requires adding adduser to
> >the Pre-Depends. vorlon warned me that any new pre-depends should
> >be discussed here first, so I'm emailing to ask - is this ok? Is
> >there a better way?

> IIRC, src:sane-backends uses setfacl(1) instead of changing the
> group. Not sure if that counts as "better".

setfacl or chgrp, it still needs to be handled in the udev rules; so
preferably, those udev rules would be the *only* place the device perms need
to be handled, and that means making sure the rules are valid at unpack

Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                    http://www.debian.org/
slangasek@ubuntu.com                                     vorlon@debian.org

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