fix: resolve issues with cgroup2 and lxc4

README.md

@@ -1,7 +1,3 @@
-🟢 We plan to support and maintain vagrant-lxc, as well as clean it up.<br/>
-🟢 Please feel free to contribute Issues and pull requests.<br/>
-🟢 P.S: Thanks [Fabio Rehm](https://fabiorehm.com) for the amazing initial project.
-
 # vagrant-lxc
 
 [![Build Status](https://travis-ci.org/fgrehm/vagrant-lxc.png?branch=master)](https://travis-ci.org/fgrehm/vagrant-lxc) [![Gem Version](https://badge.fury.io/rb/vagrant-lxc.png)](http://badge.fury.io/rb/vagrant-lxc) [![Code Climate](https://codeclimate.com/github/fgrehm/vagrant-lxc.png)](https://codeclimate.com/github/fgrehm/vagrant-lxc) [![Coverage Status](https://coveralls.io/repos/fgrehm/vagrant-lxc/badge.png?branch=master)](https://coveralls.io/r/fgrehm/vagrant-lxc) [![Gitter chat](https://badges.gitter.im/fgrehm/vagrant-lxc.png)](https://gitter.im/fgrehm/vagrant-lxc)
@@ -13,6 +9,10 @@ as an alternative to the built in VirtualBox provider for Linux hosts. Check out
 [this blog post](http://fabiorehm.com/blog/2013/04/28/lxc-provider-for-vagrant/)
 to see it in action.
 
+## Help Needed!
+
+This project is looking for maintainers, please see [GH-375](https://github.com/fgrehm/vagrant-lxc/issues/375) for more.
+
 ## Features
 
 * Provides the same workflow as the Vagrant VirtualBox provider

scripts/pipework

@@ -144,9 +144,12 @@ CONTAINER_IFNAME=${CONTAINER_IFNAME:-eth1}
 
 # Second step: find the guest (for now, we only support LXC containers)
 while read _ mnt fstype options _; do
-  [ "$fstype" != "cgroup" ] && continue
-  echo "$options" | grep -qw devices || continue
+  [ "$fstype" != "cgroup2" ] && [ "$fstype" != "cgroup" ] && continue
+  if [ "$fstype" = "cgroup" ]; then
+    echo "$options" | grep -qw devices || continue
+  fi
   CGROUPMNT=$mnt
+  CGROUPTYPE=$fstype
 done < /proc/mounts
 
 [ "$CGROUPMNT" ] || {
@@ -154,7 +157,9 @@ done < /proc/mounts
 }
 
 # Try to find a cgroup matching exactly the provided name.
-N=$(find "$CGROUPMNT" -name "$GUESTNAME" | wc -l)
+[ "$CGROUPTYPE" = "cgroup" ] && N=$(find "$CGROUPMNT" -name "$GUESTNAME" | wc -l)
+[ "$CGROUPTYPE" = "cgroup2" ] && N=$(find "$CGROUPMNT" -name "lxc.payload.$GUESTNAME" | wc -l)
+
 case "$N" in
   0)
     # If we didn't find anything, try to lookup the container with Docker.
@@ -235,7 +240,8 @@ fi
 if [ "$DOCKERPID" ]; then
   NSPID=$DOCKERPID
 else
-  NSPID=$(head -n 1 "$(find "$CGROUPMNT" -name "$GUESTNAME" | head -n 1)/tasks")
+  NSPATH=$(find "$CGROUPMNT" -name "$GUESTNAME" | head -n 1)
+  [ -f "$NSPATH/tasks" ] && NSPID=$(head -n 1 "$NSPATH/tasks")
   [ "$NSPID" ] || {
     # it is an alternative way to get the pid
     NSPID=$(lxc-info -n  "$GUESTNAME" | grep PID | grep -Eo '[0-9]+')
@@ -390,7 +396,7 @@ else
       ;;
     "")
       if installed ipcalc; then
-        eval "$(ipcalc -b $IPADDR)"
+        eval $(ipcalc -b $IPADDR)
         ip netns exec "$NSPID" ip addr add "$IPADDR" brd "$BROADCAST" dev "$CONTAINER_IFNAME"
       else
         ip netns exec "$NSPID" ip addr add "$IPADDR" dev "$CONTAINER_IFNAME"