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#!/bin/sh
# (C) 2017-2024 by Christian Hesse <mail@eworm.de>
#
# 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.
set -e
function help() {
echo "usage: ${0} [OPTIONS]"
echo
echo ' -c clean before download'
echo ' -f force if other system-update is pending'
echo ' -h this help'
echo ' -r reboot and install immediately'
echo ' -t start timer for nightly reboot'
echo ' -y update sync databases'
}
CLEAN=0
REBOOT=0
TIMER=0
while getopts 'cfhrty' opt; do
case ${opt} in
h)
help
exit 0
;;
esac
done
if [ "${UID}" -ne 0 ]; then
if command -v run0 >/dev/null; then
echo 'Missing privileges, trying to elevate.' >&2
exec run0 "${0}" "${@}"
fi
echo "You need elevated privileges. Please run as user 'root'!" >&2
exit 1
fi
OPTIND=1
while getopts 'cfhrty' opt; do
case ${opt} in
c)
if pacman-conf 'CleanMethod' | grep -q 'KeepCurrent'; then
CLEAN=1
else
echo 'The clean method is not set to keep current. Not cleaning.' >&2
fi
;;
f)
rm -f /system-update
;;
r)
REBOOT=1
;;
t)
TIMER=1
;;
y)
pacman --sync --refresh
;;
esac
done
# make sure no other update is pending
if [ -e '/system-update' -a "$(readlink '/system-update')" != '/var/cache/pacman/pkg' ]; then
echo 'Another update is pending.' >&2
exit 1
fi
# exclude /etc/pacman.d/offline.conf
function finish { rm -f /run/pacman.conf; }
trap finish EXIT
sed '/^Include *= *\/etc\/pacman\.d\/offline\.conf$/s|^|#|' < /etc/pacman.conf > /run/pacman.conf
# remove the symlink for now, will be recreated it later
rm -f /system-update
# check for available updates
if [ "$(pacman --config /run/pacman.conf --sync --sysupgrade --print | wc -l)" -eq 0 ]; then
echo "No updates available."
exit 0
fi
# clean cache
if [ ${CLEAN} -eq 1 ]; then
pacman --sync --noconfirm --clean
fi
# download packages
pacman --config /run/pacman.conf --sync --noconfirm --sysupgrade --downloadonly
# enable system update
ln -sf /var/cache/pacman/pkg /system-update
# (soft-)reboot if requested
if [ ${REBOOT} -eq 1 ]; then
echo "Soft-rebooting for update."
systemctl soft-reboot
# force a soft-reboot on (manual) reboot
else
ln -sf ../../../usr/lib/systemd/system/systemd-soft-reboot.service /run/systemd/system/systemd-reboot.service
systemctl daemon-reload
fi
# start timer if requested
if [ ${TIMER} -eq 1 ]; then
systemctl start pacman-offline-reboot.timer
fi
# show the timer (if active)
systemctl --quiet --no-pager list-timers pacman-offline-prepare.timer pacman-offline-reboot.timer
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