PREIN

/bin/sh

# We want soft static allocation of well-known ids, as disk images
# are commonly shared across NFS mounts by id rather than name; see
# https://fedoraproject.org/wiki/Packaging:UsersAndGroups
getent group kvm >/dev/null || groupadd -f -g 36 -r kvm
getent group qemu >/dev/null || groupadd -f -g 107 -r qemu
if ! getent passwd qemu >/dev/null; then
  if ! getent passwd 107 >/dev/null; then
    useradd -r -u 107 -g qemu -G kvm -d / -s /sbin/nologin -c "qemu user" qemu
  else
    useradd -r -g qemu -G kvm -d / -s /sbin/nologin -c "qemu user" qemu
  fi
fi
exit 0

PREUN

/bin/sh

            
if [ $1 -eq 0 ] ; then 
        # Package removal, not upgrade 
        systemctl --no-reload disable libvirtd.service > /dev/null 2>&1 || : 
        systemctl stop libvirtd.service > /dev/null 2>&1 || : 
fi

POSTIN

/bin/sh

# 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 /var/lib/libvirt/network && \
                  grep -L "mac address" *.xml; \
                  cd /etc/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 /var/lib/libvirt/network \
              /etc/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

            
if [ $1 -eq 1 ] ; then 
        # Initial installation 
        systemctl preset libvirtd.service >/dev/null 2>&1 || : 
fi

POSTUN

/bin/sh

            
systemctl daemon-reload >/dev/null 2>&1 || : 
if [ $1 -ge 1 ] ; then 
        # Package upgrade, not uninstall 
        systemctl try-restart libvirtd.service >/dev/null 2>&1 || : 
fi