Cross Reference: /lxc/hooks/mountcgroups

	mountcgroups revision 906f8c4ddd784ce0e759dae87bcb0f9c0a1926be
#!/bin/bash

# (C) Copyright Canonical 2011,2012

# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.

# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.

# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

#
# This is an example hook to mount all mounted cgroups in the
# container.  Only the container's own cgroup (not parents) will be
# accessible to the container.  You can enable this by adding
# lxc.hook.mount = /usr/share/lxc/hooks/mountcgroups
# to your container's configuration file.

set -e

c=$1
d=/sys/fs/cgroup
d2=$LXC_ROOTFS_MOUNT/${d}
if [ ! -d "$d" ]; then
    exit 0
fi

mount -n -t tmpfs tmpfs ${d2}

for dir in `/bin/ls $d`; do
    mkdir -p "${d}/${dir}/lxc/${c}/${c}.real"
    echo 1 > "${d}/${dir}/lxc/${c}/${c}.real/tasks"
    mkdir -p ${d2}/${dir}
    mount -n --bind "${d}/${dir}/lxc/${c}/${c}.real" "${d2}/${dir}"
done