From 4cc801f9945f8ee865a50d50be74ce8289e3a49b Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 16 Jun 2016 08:58:41 +0200 Subject: Adding container enter command. Signed-off-by: Daniel Baumann --- lib/container/enter | 97 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) create mode 100755 lib/container/enter (limited to 'lib') diff --git a/lib/container/enter b/lib/container/enter new file mode 100755 index 0000000..0de88da --- /dev/null +++ b/lib/container/enter @@ -0,0 +1,97 @@ +#!/bin/sh + +# container-tools - Manage systemd-nspawn containers +# Copyright (C) 2014-2016 Daniel Baumann +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program 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 General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +set -e + +COMMAND="$(basename ${0})" + +MACHINES="/var/lib/machines" + +Parameters () +{ + LONG_OPTIONS="name:," + + OPTIONS="n:" + + PARAMETERS="$(getopt --longoptions ${LONG_OPTIONS} --name=${COMMAND} --options ${OPTIONS} --shell sh -- ${@})" + + if [ "${?}" != "0" ] + then + echo "'${COMMAND}': getopt exit" >&2 + exit 1 + fi + + eval set -- "${PARAMETERS}" + + while true + do + case "${1}" in + -n|--name) + NAME="${2}" + shift 2 + ;; + + --) + shift 1 + break + ;; + + *) + echo "'${COMMAND}': getopt error" >&2 + exit 1 + ;; + esac + done +} + +Usage () +{ + echo "Usage: container ${COMMAND} -n|--name NAME [-- COMMAND|\"COMMANDS\"]" >&2 + exit 1 +} + +Parameters "${@}" + +if [ -z "${NAME}" ] +then + Usage +fi + +if [ ! -e "${MACHINES}/${NAME}" ] +then + echo "'${NAME}': no such container" >&2 + exit 1 +fi + +STATE="$(machinectl show ${NAME} 2>&1 | awk -F= '/^State=/ { print $2 }')" + +case "${STATE}" in + running) + ;; + + *) + echo "'${NAME}': container is not running" >&2 + exit 1 + ;; +esac + +LEADER="$(machinectl status ${NAME} | awk '/Leader: / { print $2 }')" +COMMANDS="$(echo ${@} | sed -e 's|.*-- ||')" + +# Run +nsenter --target ${LEADER} --mount --uts --ipc --net --pid --root --wd=/root ${COMMANDS} -- cgit v1.2.3