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Generate a MAC when loading a config instead of package update

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Partially reverts commit 5754dbd.

The code in the specfile adds a MAC address to every <bridge>,
even for <forward mode='bridge'> for which we don't support
changing MAC addresses.

Remove it completely. For new networks, we have been adding
MAC addresses on definition/creation since the commit mentioned above.
For existing networks (pre-0.9.0), the MAC is added by this commit.

https://bugzilla.redhat.com/show_bug.cgi?id=1156367
This commit is contained in:
Ján Tomko 2014-11-11 09:16:09 +01:00
parent c9c7a2bd96
commit a47ae7c004
2 changed files with 4 additions and 42 deletions
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42
libvirt.spec.in
View File

@ -1643,48 +1643,6 @@ exit 0
%post daemon
%if %{with_network}
# All newly defined networks will have a mac address for the bridge
# auto-generated, but networks already existing at the time of upgrade
# will not. We need to go through all the network configs, look for
# those that don't have a mac address, and add one.
network_files=$( (cd %{_localstatedir}/lib/libvirt/network && \
grep -L "mac address" *.xml; \
cd %{_sysconfdir}/libvirt/qemu/networks && \
grep -L "mac address" *.xml) 2>/dev/null \
| sort -u)
for file in $network_files
do
# each file exists in either the config or state directory (or both) and
# does not have a mac address specified in either. We add the same mac
# address to both files (or just one, if the other isn't there)
mac4=`printf '%X' $(($RANDOM % 256))`
mac5=`printf '%X' $(($RANDOM % 256))`
mac6=`printf '%X' $(($RANDOM % 256))`
for dir in %{_localstatedir}/lib/libvirt/network \
%{_sysconfdir}/libvirt/qemu/networks
do
if test -f $dir/$file
then
sed -i.orig -e \
"s|\(<bridge.*$\)|\0\n <mac address='52:54:00:$mac4:$mac5:$mac6'/>|" \
$dir/$file
if test $? != 0
then
echo "failed to add <mac address='52:54:00:$mac4:$mac5:$mac6'/>" \
"to $dir/$file"
mv -f $dir/$file.orig $dir/$file
else
rm -f $dir/$file.orig
fi
fi
done
done
%endif
%if %{with_systemd}
%if %{with_systemd_macros}
%systemd_post virtlockd.socket libvirtd.service libvirtd.socket

4
src/conf/network_conf.c
View File

@ -3139,6 +3139,10 @@ virNetworkObjPtr virNetworkLoadConfig(virNetworkObjListPtr nets,
def->forward.type == VIR_NETWORK_FORWARD_NAT ||
def->forward.type == VIR_NETWORK_FORWARD_ROUTE) {
if (!def->mac_specified) {
virNetworkSetBridgeMacAddr(def);
virNetworkSaveConfig(configDir, def);
}
/* Generate a bridge if none is specified, but don't check for collisions
* if a bridge is hardcoded, so the network is at least defined.
*/