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rng: add builtin rng backend model

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The builtin rng backend uses getrandom syscall to generate random, no
external rng source needed, introduced from libvirt v6.1.0.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Han Han <hhan@redhat.com>
This commit is contained in:
Han Han 2020-04-19 21:39:02 +08:00 committed by Cole Robinson
parent f6eee380a2
commit f34f73622d
3 changed files with 10 additions and 1 deletions
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8
man/virt-install.pod
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@ -1722,7 +1722,7 @@ Use --tpm=? to see a list of all available sub options. Complete details at L<ht
Configure a virtual RNG device. Configure a virtual RNG device.
Type can be B<random> or B<egd>. Type can be B<random>, B<egd> or B<builtin>.
If the specified type is B<random> then these values must If the specified type is B<random> then these values must
be specified: be specified:
@ -1768,6 +1768,8 @@ B<udp> and backend_mode is B<bind>.
=back =back
If the specified type is B<builtin>, B<backend> is not required.
An example invocation: An example invocation:
=over 4 =over 4
@ -1781,6 +1783,10 @@ Connect to localhost to the TCP port 8000 to get entropy data.
Use the /dev/random device to get entropy data, this form implicitly uses the Use the /dev/random device to get entropy data, this form implicitly uses the
"random" model. "random" model.
=item B<--rng builtin>
Use the builtin rng device to get entropy data.
Use --rng=? to see a list of all available sub options. Complete details at L<https://libvirt.org/formatdomain.html#elementsRng> Use --rng=? to see a list of all available sub options. Complete details at L<https://libvirt.org/formatdomain.html#elementsRng>
=back =back

2
virtManager/addhardware.py
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@ -573,6 +573,8 @@ class vmmAddHardware(vmmGObjectUI):
return _("Random") return _("Random")
if rng_type == DeviceRng.TYPE_EGD: if rng_type == DeviceRng.TYPE_EGD:
return _("Entropy Gathering Daemon") return _("Entropy Gathering Daemon")
if rng_type == DeviceRng.TYPE_BUILTIN:
return _("Builtin RNG")
return rng_type return rng_type
@staticmethod @staticmethod

1
virtinst/devices/rng.py
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@ -14,6 +14,7 @@ class DeviceRng(Device):
TYPE_RANDOM = "random" TYPE_RANDOM = "random"
TYPE_EGD = "egd" TYPE_EGD = "egd"
TYPE_BUILTIN = "builtin"
model = XMLProperty("./@model") model = XMLProperty("./@model")