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Re: [PATCH 1/2] apparmor: allow adding permanent per guest rules

On Fri, Aug 7, 2020 at 6:14 PM Daniel P. Berrangé <berrange redhat com> wrote:
On Fri, Aug 07, 2020 at 12:21:19PM +0200, Christian Ehrhardt wrote:
> The design of apparmor in libvirt always had a way to define custom
> per-guest rules as described in docs/drvqemu.html and [1].
> A fix meant to clean the profiles after guest shutdown was a bit
> overzealous and accidentially removed this important admin feature as
> well.
> Therefore reduce the --delete option of virt-aa-helper to only delete
> the .files that would be re-generated in any case.
> Users/Admins are always free to clean the profiles themselve if they
> prefer a clean directory - they will be regenerated as needed. But
> libvirt should never remove the base profile meant to allow per-guest
> overrides and thereby break a documented feature.
> [1]: https://gitlab.com/apparmor/apparmor/-/wikis/Libvirt#advanced-usage
> Fixes: eba2225b "apparmor: delete profile on VM shutdown"
> Signed-off-by: Christian Ehrhardt <christian ehrhardt canonical com>
> ---
>  src/security/virt-aa-helper.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)

Reviewed-by: Daniel P. Berrangé <berrange redhat com>

(as with the other recent apparmor patch patch)
Thanks for the review - there was no negative feedback so far and in tests this worked fine.
I'm committing the changes to not be postponed to close to the next release.

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Christian Ehrhardt
Staff Engineer, Ubuntu Server
Canonical Ltd

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