void-bash-installer/files/bin/void-backup

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#!/bin/bash
export LANG="en_US.UTF-8"
backupcfg="/etc/backup.cfg"
ziel="/var/lib/backup/ziel"
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cfg="/etc/btrbk/btrbk.conf.void"
fhelp() {
echo "Nutze es so:"
echo "sudo backup"
echo "sudo backup poweroff (um den Rechner nach dem Backup herunterzufahren.)"
#echo "sudo backup update (um den Rechner nach dem Backup up zu daten.)"
#echo "update und poweroff sind mixbar"
echo "sudo backup passwd (um das Passwort für die Backupfestplatte zu ändern.)"
}
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if [ "${UID}" -ne "0" ]; then
echo "Keine Rootrechte."
exit 1
fi
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for argval in "$@"
do
case "${argval}" in
power|poweroff|p)
poweroff=y
;;
help|-h|--help|h)
fhelp
exit
;;
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update) update=y ;;
passwd) passwd=y ;;
clean) do=clean ;;
run) do=run ;;
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esac
done
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test -z "${do}" && do=run
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if [[ ! -f /etc/btrbk/btrbk.conf ]]; then
if [[ -f "${backupcfg}" ]]; then
source "${backupcfg}"
else
echo "${backupcfg} fehlt."
echo "Diese Datei wird normalerweise durch \`void-createbackupcontainer\`"
echo "angelegt. Bitte Sprich mit deinem Systemadministrator."
fi
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if [ -z "${UUID}" ]; then
echo "Keine Backupplatte angegeben."
exit 1
fi
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if [ ! -e "/dev/disk/by-uuid/${UUID}" ]; then
echo "Bitte Backupfestplatte anschliessen."
exit 1
fi
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if [ -e /tmp/backup ]; then
echo "Es läuft schon ein Backupvorgang oder wurde nicht richtig beendet."
echo "Bei letzterem: 'sudo rm -rf /tmp/backup'"
exit 1
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fi
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touch /tmp/backup
if [[ "${passwd}" == "y" ]]; then
cryptsetup luksChangeKey "/dev/disk/by-uuid/${UUID}"
rm -rf /tmp/backup
exit 0
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fi
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function finish {
sync
if [ "${poweroff}" = "y" ]; then
shutdown -h now
fi
sleep 4
umount "${ziel}"
echo " "
echo " "
if [[ "${MOUNTEDBY}" == "script" ]]; then
cryptsetup close "luks-${UUID}"
echo "Festplatte kann nun sicher entfernt werden."
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elif [[ "${MOUNTEDBY}" == "de" ]]; then
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echo "Festplatte bitte mit der grafischen Oberflaeche auswerfen (wie ein USB-Stick)"
echo ""
echo "oder:"
echo "sudo umount /dev/mapper/luks-${UUID}"
echo "sudo cryptsetup close luks-${UUID}"
echo ""
fi
rm -rf /tmp/backup
echo "FERTIG"
}
trap finish EXIT
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if mountpoint -q -x "/dev/mapper/luks-${UUID}" > /dev/null; then
MOUNTEDBY="de"
else
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if ! cryptsetup open UUID="${UUID}" "luks-${UUID}"; then
echo "Konnte /dev/disk/by-uuid/${UUID} nicht öffnen."
exit
fi
MOUNTEDBY="script"
fi
if ! mount "/dev/mapper/luks-${UUID}" "${ziel}"; then
echo "Konnte /dev/mapper/luks-${UUID} in ${ziel} nicht mounten."
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exit
fi
else
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cfg="/etc/btrbk/btrbk.conf"
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fi
if mountpoint -q /var/lib/backup/quelle/bootfs; then
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mkdir -p /var/lib/backup/quelle/bootfs/system/backup "/var/lib/backup/ziel/void/bootfs"
boot="backupboot"
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fi
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mkdir -p /var/lib/backup/quelle/rootfs/system/backup "/var/lib/backup/ziel/void/rootfs" "/var/lib/backup/ziel/void/homefs"
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for t in backup "${boot}"; do
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if [[ "${t}" ]]; then
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btrbk --config="${cfg}" --progress --quiet clean "${t}"
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if ! btrbk --config="${cfg}" --progress --quiet "${do}" "${t}"; then
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btrbk --config="${cfg}" --progress --quiet clean
echo "Wegen Fehler nicht herunterfahren."
poweroff=n
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exit
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fi
fi
done