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Re: [libvirt] [PATCH 2/2] AppArmor: use fine-grained mount rules instead of a blanket catch-all one



On Sun, 2017-11-05 at 15:29 +0000, intrigeri+libvirt boum org wrote:
> From: intrigeri <intrigeri+libvirt boum org>
> 
> This set of rules was proposed by Christian Boltz <apparmor cboltz de
> >
> on https://bugzilla.opensuse.org/show_bug.cgi?id=1065123.
> ---
>  examples/apparmor/usr.sbin.libvirtd | 15 ++++++++++++++-
>  1 file changed, 14 insertions(+), 1 deletion(-)
> 
> diff --git a/examples/apparmor/usr.sbin.libvirtd
> b/examples/apparmor/usr.sbin.libvirtd
> index d2831aa491..8d61d154e1 100644
> --- a/examples/apparmor/usr.sbin.libvirtd
> +++ b/examples/apparmor/usr.sbin.libvirtd
> @@ -30,7 +30,20 @@
>    # Needed for vfio
>    capability sys_resource,
>  
> -  mount,
> +  mount options=(rw,rslave)  -> /,
> +  mount options=(rw, nosuid) -> /{var/,}run/libvirt/qemu/*.dev/,
> +
> +  mount options=(rw, move) /dev/           ->
> /{var/,}run/libvirt/qemu/*.dev/,
> +  mount options=(rw, move) /dev/hugepages/ ->
> /{var/,}run/libvirt/qemu/*.hugepages/,
> +  mount options=(rw, move) /dev/mqueue/    ->
> /{var/,}run/libvirt/qemu/*.mqueue/,
> +  mount options=(rw, move) /dev/pts/       ->
> /{var/,}run/libvirt/qemu/*.pts/,
> +  mount options=(rw, move) /dev/shm/       ->
> /{var/,}run/libvirt/qemu/*.shm/,
> +
> +  mount options=(rw, move) /{var/,}run/libvirt/qemu/*.dev/       ->
> /dev/,
> +  mount options=(rw, move) /{var/,}run/libvirt/qemu/*.hugepages/ ->
> /dev/hugepages/,
> +  mount options=(rw, move) /{var/,}run/libvirt/qemu/*.mqueue/    ->
> /dev/mqueue/,
> +  mount options=(rw, move) /{var/,}run/libvirt/qemu/*.pts/       ->
> /dev/pts/,
> +  mount options=(rw, move) /{var/,}run/libvirt/qemu/*.shm/       ->
> /dev/shm/,
>  

These all look fine. I suspect the rules may need to be fine-tuned for
different distributions, but that's ok, this is example policy and we
can iterate/adjust as needed.

-- 
Jamie Strandboge             | http://www.canonical.com

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