lxc-test-unpriv revision 8bb165038d60d59084c1fafee171948244f0f86a
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn#!/bin/bash
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# lxc: linux Container library
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# Authors:
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# Serge Hallyn <serge.hallyn@ubuntu.com>
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn#
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# This is a test script for unprivileged containers
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# This library is free software; you can redistribute it and/or
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# modify it under the terms of the GNU Lesser General Public
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# License as published by the Free Software Foundation; either
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# version 2.1 of the License, or (at your option) any later version.
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# This library is distributed in the hope that it will be useful,
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# but WITHOUT ANY WARRANTY; without even the implied warranty of
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# Lesser General Public License for more details.
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# You should have received a copy of the GNU Lesser General Public
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# License along with this library; if not, write to the Free Software
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# This test assumes an Ubuntu host
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallynif [ $(id -u) -ne 0 ]; then
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn echo "ERROR: Must run as root."
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn exit 1
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallynfi
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# Test if we're using an overlayfs module that handles symlinks correctly. If
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn# not, we skip these tests since overlay clones will not work correctly.
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallynif modprobe -q overlayfs; then
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn TMPDIR=$(mktemp -d)
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn MOUNTDIR="${TMPDIR}/ovl_symlink_test"
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn mkdir ${MOUNTDIR}
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn mount -t tmpfs none ${MOUNTDIR}
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn mkdir "${MOUNTDIR}/lowerdir" "${MOUNTDIR}/upperdir" "${MOUNTDIR}/overlayfs"
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn mount -t overlayfs -o lowerdir="${MOUNTDIR}/lowerdir",upperdir="${MOUNTDIR}/upperdir" none "${MOUNTDIR}/overlayfs"
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn CORRECT_LINK_TARGET="${MOUNTDIR}/overlayfs/dummy_file"
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn exec 9> "${CORRECT_LINK_TARGET}"
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn DETECTED_LINK_TARGET=$(readlink -q /proc/$$/fd/9)
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn # cleanup
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn exec 9>&-
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn umount "${MOUNTDIR}/overlayfs"
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn umount ${MOUNTDIR}
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn rmdir ${MOUNTDIR}
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn # This overlay module does not correctly handle symlinks, so skip the
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn # tests.
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn if [ "${DETECTED_LINK_TARGET}" != "${CORRECT_LINK_TARGET}" ]; then
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn exit 0
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn fi
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallynfi
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallynwhich newuidmap >/dev/null 2>&1 || { echo "'newuidmap' command is missing" >&2; exit 1; }
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge HallynDONE=0
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge HallynKNOWN_RELEASES="precise trusty xenial yakkety zesty"
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyncleanup() {
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn cd /
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn run_cmd lxc-stop -n c2 -k || true
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn run_cmd lxc-stop -n c1 -k || true
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn pkill -u $(id -u $TUSER) -9
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn sed -i '/lxcunpriv/d' /run/lxc/nics /etc/lxc/lxc-usernet
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn sed -i '/^lxcunpriv:/d' /etc/subuid /etc/subgid
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn rm -Rf $HDIR /run/user/$(id -u $TUSER)
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn deluser $TUSER
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn if [ $DONE -eq 0 ]; then
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn echo "FAIL"
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn exit 1
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn fi
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn echo "PASS"
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn}
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallynrun_cmd() {
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn sudo -i -u $TUSER \
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn env http_proxy=${http_proxy:-} https_proxy=${https_proxy:-} \
d08363afbb40a7a8f579fe1ce60e40ffeaee5959Serge Hallyn XDG_RUNTIME_DIR=/run/user/$(id -u $TUSER) $*
}
# create a test user
TUSER=lxcunpriv
HDIR=/home/$TUSER
ARCH=i386
if type dpkg >/dev/null 2>&1; then
ARCH=$(dpkg --print-architecture)
fi
trap cleanup EXIT SIGHUP SIGINT SIGTERM
set -eu
deluser $TUSER && rm -Rf $HDIR || true
useradd $TUSER
mkdir -p $HDIR
echo "$TUSER veth lxcbr0 2" >> /etc/lxc/lxc-usernet
sed -i '/^lxcunpriv:/d' /etc/subuid /etc/subgid
usermod -v 910000-919999 -w 910000-919999 $TUSER
mkdir -p $HDIR/.config/lxc/
cat > $HDIR/.config/lxc/default.conf << EOF
lxc.network.type = veth
lxc.network.link = lxcbr0
lxc.id_map = u 0 910000 9999
lxc.id_map = g 0 910000 9999
EOF
chown -R $TUSER: $HDIR
mkdir -p /run/user/$(id -u $TUSER)
chown -R $TUSER: /run/user/$(id -u $TUSER)
cd $HDIR
if which cgm >/dev/null 2>&1; then
cgm create all $TUSER
cgm chown all $TUSER $(id -u $TUSER) $(id -g $TUSER)
cgm movepid all $TUSER $$
elif [ -e /sys/fs/cgroup/cgmanager/sock ]; then
for d in $(cut -d : -f 2 /proc/self/cgroup); do
dbus-send --print-reply --address=unix:path=/sys/fs/cgroup/cgmanager/sock \
--type=method_call /org/linuxcontainers/cgmanager org.linuxcontainers.cgmanager0_0.Create \
string:$d string:$TUSER >/dev/null
dbus-send --print-reply --address=unix:path=/sys/fs/cgroup/cgmanager/sock \
--type=method_call /org/linuxcontainers/cgmanager org.linuxcontainers.cgmanager0_0.Chown \
string:$d string:$TUSER int32:$(id -u $TUSER) int32:$(id -g $TUSER) >/dev/null
dbus-send --print-reply --address=unix:path=/sys/fs/cgroup/cgmanager/sock \
--type=method_call /org/linuxcontainers/cgmanager org.linuxcontainers.cgmanager0_0.MovePid \
string:$d string:$TUSER int32:$$ >/dev/null
done
else
for d in /sys/fs/cgroup/*; do
[ -f $d/cgroup.clone_children ] && echo 1 > $d/cgroup.clone_children
[ ! -d $d/lxctest ] && mkdir $d/lxctest
chown -R $TUSER: $d/lxctest
echo $$ > $d/lxctest/tasks
done
fi
# default release is trusty, or the systems release if recognized
release=trusty
if [ -f /etc/lsb-release ]; then
. /etc/lsb-release
rels=$(ubuntu-distro-info --supported 2>/dev/null) ||
rels="$KNOWN_RELEASES"
for r in $rels; do
[ "$DISTRIB_CODENAME" = "$r" ] && release="$r"
done
fi
# Copy the download template cache if available
run_cmd mkdir -p $HDIR/.cache/lxc
[ -d /var/cache/lxc/download ] && \
cp -R /var/cache/lxc/download $HDIR/.cache/lxc && \
chown -R $TUSER: $HDIR/.cache/lxc
run_cmd lxc-create -t download -n c1 -- -d ubuntu -r $release -a $ARCH
# Make sure we can start it - twice
for count in `seq 1 2`; do
run_cmd lxc-start -n c1 -d
p1=$(run_cmd lxc-info -n c1 -p -H)
[ "$p1" != "-1" ] || { echo "Failed to start container c1 (run $count)"; false; }
run_cmd lxc-info -n c1
run_cmd lxc-attach -n c1 -- /bin/true
run_cmd lxc-stop -n c1 -k
done
run_cmd lxc-copy -s -n c1 -N c2
run_cmd lxc-start -n c2 -d
p1=$(run_cmd lxc-info -n c2 -p -H)
[ "$p1" != "-1" ] || { echo "Failed to start container c2"; false; }
run_cmd lxc-stop -n c2 -k
if which cgm >/dev/null 2>&1; then
echo "Testing containers under different cgroups per subsystem"
run_cmd cgm create freezer x1/x2
cgm movepid freezer x1 $$
run_cmd lxc-start -n c1 -d
p1=$(run_cmd lxc-info -n c1 -p -H)
[ "$p1" != "-1" ] || { echo "Failed to start container c1"; false; }
run_cmd lxc-info -n c1
run_cmd lxc-attach -n c1 -- /bin/true
run_cmd lxc-cgroup -n c1 freezer.state
echo "Testing lxc-attach and lxc-cgroup from different cgroup"
cgm movepid freezer x2 $$
run_cmd lxc-attach -n c1 -- /bin/true
run_cmd lxc-cgroup -n c1 freezer.state
run_cmd lxc-cgroup -n c1 memory.limit_in_bytes
fi
DONE=1