lxc: working on buster (gandalf), and almost working on virtual (jessie), except lxc_net

plugins/lxc/lxc-lib

@@ -0,0 +1,63 @@
+: << =cut
+
+=head1 NAME
+
+lxc-lib -- some base functions for the lxc_* plugins
+
+=head1 AUTHOR
+
+schaefer@alphanet.ch
+
+=head1 LICENSE
+
+GPLv3
+
+=cut
+
+lxcpath=${lxcpath:-/var/lib/lxc}
+
+function active_guests {
+   local g active i ok
+   for g in $(lxc-ls | sort -u)
+   do
+      # handle optional exclude list in $1
+      ok=1
+      for i in $1
+      do
+         if [ "$i" = "$g" ]; then
+            ok=0
+         fi
+      done
+
+      if [ $ok = 1 ]; then
+         if lxc-info -n $g 2>&1 | grep -qs RUNNING; then
+            active="$active $g"
+         fi
+      fi
+   done
+
+   echo $active
+}
+
+function lxc_cgroup {
+   # lxc3
+   lxc-cgroup -o /dev/stdout -l INFO $* | sed 's/^.*lxc_cgroup.c:main:[0-9][0-9]* - //'
+
+   # lxc < 3
+   #lxc-cgroup $*
+}
+
+function lxc_clean_fieldname {
+   # workaround for bug leaving out the first number
+   echo $(clean_fieldname ${1::1}$1)
+}
+
+function lxc_netdev {
+   local g=$1 dev
+
+   if [ -f $lxcpath/$g/config ]; then
+      grep lxc.net.0.veth.pair $lxcpath/$g/config | awk '{print $NF;}'
+   else
+      echo unknown
+   fi
+}