On Mon, Nov 18, 2013 at 06:58:06PM +0530, Pradipta Kr. Banerjee wrote:
> Creating a qemu VM with /dev/hwrng as backed RNG device throws the
> following error - "Could not open '/dev/hwrng': Operation not permitted"
> This patch fixes the issue
>
> Signed-off-by: Pradipta Kr. Banerjee <bpradip@xxxxxxxxxx>
> ---
> src/qemu/qemu_cgroup.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
> index ace7e35..d9ebb30 100644
> --- a/src/qemu/qemu_cgroup.c
> +++ b/src/qemu/qemu_cgroup.c
> @@ -39,7 +39,7 @@
>
> 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. The
/dev/hwrng device does not fall into this scenario.
Daniel
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