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93 lines
2.4 KiB
93 lines
2.4 KiB
#!/gns3/bin/busybox sh
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#
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# Copyright (C) 2016 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# This script is injected into the container and launch before
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# the start command of the container
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#
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OLD_PATH="$PATH"
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PATH=/gns3/bin:/tmp/gns3/bin
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# bootstrap busybox commands
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if [ ! -d /tmp/gns3/bin ]; then
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busybox mkdir -p /tmp/gns3/bin
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/gns3/bin/busybox --install -s /tmp/gns3/bin
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fi
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# Restore file permission and mount volumes
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echo "$GNS3_VOLUMES" | tr ":" "\n" | while read i
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do
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# ensure, that the mount directory exists
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mkdir -p "$i"
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# Copy original files if destination is empty (first start)
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if [ ! -f "/gns3volumes$i/.gns3_perms" ]; then
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cp -a "$i/." "/gns3volumes$i"
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touch "/gns3volumes$i/.gns3_perms"
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fi
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mount --bind "/gns3volumes$i" "$i"
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while IFS=: read PERMS OWNER GROUP FILE
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do
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[ -L "$FILE" ] || chmod "$PERMS" "$FILE"
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chown -h "${OWNER}:${GROUP}" "$FILE"
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done < "$i/.gns3_perms"
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done
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# /etc/hosts
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[ -s /etc/hosts ] || cat > /etc/hosts << __EOF__
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127.0.1.1 $HOSTNAME
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127.0.0.1 localhost
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::1 localhost ip6-localhost ip6-loopback
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fe00::0 ip6-localnet
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ff00::0 ip6-mcastprefix
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ff02::1 ip6-allnodes
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ff02::2 ip6-allrouters
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__EOF__
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# imitate docker's `ExtraHosts` behaviour
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sed -i '/GNS3_EXTRA_HOSTS_START/,/GNS3_EXTRA_HOSTS_END/d' /etc/hosts
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[ -n "$GNS3_EXTRA_HOSTS" ] && cat >> /etc/hosts << __EOF__
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# GNS3_EXTRA_HOSTS_START
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$GNS3_EXTRA_HOSTS
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# GNS3_EXTRA_HOSTS_END
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__EOF__
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# configure loopback interface
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ip link set dev lo up
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# Wait for all eth available
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while true
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do
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grep $GNS3_MAX_ETHERNET /proc/net/dev > /dev/null && break
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sleep 0.5
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done
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# activate eth interfaces
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sed -n 's/^ *\(eth[0-9]*\):.*/\1/p' < /proc/net/dev | while read dev; do
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ip link set dev $dev up
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done
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# configure network interfaces
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ifup -a -f
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# continue normal docker startup
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PATH="$OLD_PATH"
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exec "$@"
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