On 11/18/2013 08:20 AM, Daniel P. Berrange wrote:
> static const char *const defaultDeviceACL[] = {
> "/dev/null", "/dev/full", "/dev/zero",
> - "/dev/random", "/dev/urandom",
> + "/dev/random", "/dev/urandom", "/dev/hwrng",
> "/dev/ptmx", "/dev/kvm", "/dev/kqemu",
> "/dev/rtc", "/dev/hpet", "/dev/vfio/vfio",
> NULL,
NACK, for any device listed in the XML, we should add it in the per-VM
cgroups setup code.
The existing /dev/random & /dev/urandom devices are there because they
are used for basic crypto libraries unrelated to the XML config.
/dev/urandom, probably. /dev/random - really? Isn't that a DoS
potential for one guest to starve entropy from other guests, in spite of
sVirt?
The
/dev/hwrng device does not fall into this scenario.
Agreed.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library
http://libvirt.org