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#!/bin/bash
#
# This hook copies the core systemd-networkd related service
# to the NEWROOT and activated them in sysinit.target
# to prevent systemd from killing these while pivot_root
new_sysinit_wants="${NEWROOT}/usr/lib/systemd/system/sysinit.target.wants/"
mkdir -p "${new_sysinit_wants}"
for unit in \
systemd-networkd.socket \
systemd-networkd.service \
systemd-networkd-wait-online.service \
systemd-resolved.service
do
service_path="$(systemctl show -p FragmentPath $unit | cut -c 14-)"
cp "${service_path}" "${NEWROOT}/${service_path}"
ln -sf "../${unit}" "${new_sysinit_wants}/${unit}"
done
# this drop-in is needed to prevent a pull-in loop sysinit.target <-> basic.target
mkdir -p "${NEWROOT}/usr/lib/systemd/system/systemd-resolved.service.d/"
echo '[Unit]' > "${NEWROOT}/usr/lib/systemd/system/systemd-resolved.service.d/00-no-default-deps.conf"
echo 'DefaultDependencies=no' >> "${NEWROOT}/usr/lib/systemd/system/systemd-resolved.service.d/00-no-default-deps.conf"
# finally make sure the NEWROOT resolv.conf links to the one managed by resolved.
rm $NEWROOT/etc/resolv.conf
ln -s /run/systemd/resolve/resolv.conf $NEWROOT/etc/resolv.conf
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