gns3-server/gns3server/modules/docker/resources/init.sh

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#!/gns3/bin/busybox sh
#
# Copyright (C) 2016 GNS3 Technologies Inc.
#
# 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 <http://www.gnu.org/licenses/>.
#
# This script is injected into the container and launch before
# the start command of the container
#
OLD_PATH="$PATH"
PATH=/gns3/bin:/tmp/gns3/bin
# bootstrap busybox commands
if [ ! -d /tmp/gns3/bin ]; then
busybox mkdir -p /tmp/gns3/bin
/gns3/bin/busybox --install -s /tmp/gns3/bin
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# remove commands already available in /gns3/bin
(cd /tmp/gns3/bin; rm -f `cd /gns3/bin; echo *`)
fi
# Wait 2 seconds to settle the network interfaces
sleep 2
# /etc/hosts
[ -s /etc/hosts ] || cat > /etc/hosts << __EOF__
127.0.1.1 $HOSTNAME
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
__EOF__
# configure loopback interface
ip link set dev lo up
# configure eth interfaces
sed -n 's/^ *\(eth[0-9]*\):.*/\1/p' < /proc/net/dev | while read dev; do
ip link set dev $dev up
done
ifup -a -f
# continue normal docker startup
PATH="$OLD_PATH"
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exec "$@"