Hi,
I'm looking into why virt-aa-helper isn't adding allow rules for
backing stores nested deeper than 1. So if I do
qemu-img create -f qcow2 l1.img 10G
qemu-img create -f qcow2 -b l1.img l2.img
and use l2.img in a domain, then virt-aa-helper will add allow
rules for the domain to access both l1.img and l2.img. But if I
qemu-img create -f qcow2 -b l2.img l3.img
and use l3.img in the domain, then l3.img will not get an allow rule.
Looking at src/security/virt-aa-helper.c:get_files(), it is doing:
if (!disk->src->backingStore) {
bool probe = ctl->allowDiskFormatProbing;
virStorageFileGetMetadata(disk->src, -1, -1, probe, false);
}
if (virDomainDiskDefForeachPath(disk, true, add_file_path, &buf) < 0)
goto cleanup;
and virStorageFileGetMetadata in turn calls virStorageFileGetMetadataRecurse().
So it seems like l3.img *should* be geting hit in virDomainDiskDefForeachPath,
but it's not. Am I misunderstanding something in how these helpers should be
used?
thanks,
-serge
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