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gns3-server/gns3server/compute/docker/resources/init.sh
Karim 14fb64b941 Added "/sbin" to init script PATH variable so that its possible to
use more sophosticated dhcp clients (compared to the udhcpc that is
provided by busybox) by installing them into the docker image in
the normal way.
2018-10-06 16:06:24 +01:00

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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="$PATH"
PATH=/gns3/bin:/tmp/gns3/bin:/sbin
# bootstrap busybox commands
if [ ! -d /tmp/gns3/bin ]; then
busybox mkdir -p /tmp/gns3/bin
/gns3/bin/busybox --install -s /tmp/gns3/bin
fi
# Restore file permission and mount volumes
echo "$GNS3_VOLUMES" | tr ":" "\n" | while read i
do
# ensure, that the mount directory exists
mkdir -p "$i"
# Copy original files if destination is empty (first start)
if [ ! -f "/gns3volumes$i/.gns3_perms" ]; then
cp -a "$i/." "/gns3volumes$i"
touch "/gns3volumes$i/.gns3_perms"
fi
mount --bind "/gns3volumes$i" "$i"
while IFS=: read PERMS OWNER GROUP FILE
do
[ -L "$FILE" ] || chmod "$PERMS" "$FILE"
chown -h "${OWNER}:${GROUP}" "$FILE"
done < "$i/.gns3_perms"
done
# /etc/hosts
[ -s /etc/hosts ] || cat > /etc/hosts << __EOF__
127.0.1.1 $HOSTNAME
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
__EOF__
# imitate docker's `ExtraHosts` behaviour
sed -i '/GNS3_EXTRA_HOSTS_START/,/GNS3_EXTRA_HOSTS_END/d' /etc/hosts
[ -n "$GNS3_EXTRA_HOSTS" ] && cat >> /etc/hosts << __EOF__
# GNS3_EXTRA_HOSTS_START
$GNS3_EXTRA_HOSTS
# GNS3_EXTRA_HOSTS_END
__EOF__
# configure loopback interface
ip link set dev lo up
# Wait for all eth available
while true
do
grep $GNS3_MAX_ETHERNET /proc/net/dev > /dev/null && break
sleep 0.5
done
# activate eth interfaces
sed -n 's/^ *\(eth[0-9]*\):.*/\1/p' < /proc/net/dev | while read dev; do
ip link set dev $dev up
done
# configure network interfaces
ifup -a -f
# continue normal docker startup
PATH="$OLD_PATH"
exec "$@"