Re: [libvirt-users] Which objects does dynamic_ownership apply to?
On 09/19/2018 12:39 PM, Milan Zamazal wrote:
Hi, I'm playing with dynamic ownership and not all objects have
their
owners changed.
Is dynamic_ownership and its scope documented somewhere, besides the
comment in qemu.conf?
And what kinds of objects are handled by dynamic ownership? While some
objects seem to be handled, other objects are apparently unaffected.
For instance /dev/hwrng or a USB host device keep their root owners and
are inaccessible to the VM. Is that expected or do I have anything
wrong?
Basically, if a file is used solely by a domain we can relabel it.
However, if a file can be used by other processes (not only qemu) then
we must not change its label as we would be effectively cutting of the
other processes we know nothing about. In this case, /dev/hwrng might be
used by some other process in the system. Also the fact that it's owned
by root:root and not readable by anybody except the root user, tells me
that we might not want to pass the file to any domain?
Michal