92 lines
2.6 KiB
Bash
Executable file
92 lines
2.6 KiB
Bash
Executable file
#!/bin/bash
|
|
|
|
# snap-pac
|
|
# https://github.com/wesbarnett/snap-pac
|
|
# Copyright (C) 2016 James W. Barnett
|
|
|
|
# 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 2 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, write to the Free Software Foundation, Inc.,
|
|
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
# Main script.
|
|
|
|
set -e
|
|
|
|
if [[ $EUID -ne 0 ]]; then
|
|
echo "ERROR: Script must be run as root."
|
|
exit 1
|
|
fi
|
|
|
|
if [[ $# -ne 1 ]]; then
|
|
echo "ERROR: Only one argument should be passed to this script."
|
|
exit 1
|
|
fi
|
|
|
|
if [[ $1 != "pre" ]] && [[ $1 != "post" ]]; then
|
|
echo "ERROR: First argument should either be 'pre' or 'post'."
|
|
exit 1
|
|
fi
|
|
|
|
if [[ -f /etc/conf.d/snapper ]]; then
|
|
source /etc/conf.d/snapper
|
|
else
|
|
echo "ERROR: /etc/conf.d/snapper does not exist!"
|
|
exit 1
|
|
fi
|
|
|
|
if [[ -z "$SNAPPER_CONFIGS" ]]; then
|
|
echo "WARNING: No snapper configurations found, so not taking any snapshots!"
|
|
exit 1
|
|
fi
|
|
|
|
declare -r pre_or_post=$1
|
|
declare pacman_cmd
|
|
pacman_cmd="$(sed 's./usr/bin/pacman.pacman.g' <(ps -C pacman -o args=))"
|
|
|
|
declare -i x=0
|
|
for CONFIG in $SNAPPER_CONFIGS; do
|
|
|
|
PACMAN_PRE_POST="no"
|
|
if [[ $CONFIG == "root" ]]; then
|
|
PACMAN_PRE_POST="yes"
|
|
fi
|
|
PACMAN_PRE_DESCRIPTION="$pacman_cmd"
|
|
PACMAN_POST_DESCRIPTION="$pacman_cmd"
|
|
PACMAN_CLEANUP_ALGORITHM="number"
|
|
# shellcheck source=/dev/null
|
|
source /etc/snapper/configs/"$CONFIG"
|
|
|
|
[[ $PACMAN_PRE_POST != "yes" ]] && continue
|
|
|
|
prefile="/tmp/snap-pac-pre_$CONFIG"
|
|
snapper_cmd="snapper --config $CONFIG create --type $pre_or_post --cleanup-algorithm $PACMAN_CLEANUP_ALGORITHM"
|
|
|
|
x=$((x+1))
|
|
|
|
if [[ "$pre_or_post" == "pre" ]]; then
|
|
$snapper_cmd --description "$PACMAN_PRE_DESCRIPTION" --print-number > "$prefile"
|
|
elif [[ -f $prefile ]]; then
|
|
$snapper_cmd --description "$PACMAN_POST_DESCRIPTION" --pre-number "$(< "$prefile")"
|
|
rm "$prefile"
|
|
else
|
|
echo "WARNING: $prefile does not exist, so no post snapshot will be taken. If you are initially installing snap-pac, this is normal."
|
|
fi
|
|
|
|
done
|
|
|
|
if [[ $x -eq 0 ]]; then
|
|
echo "WARNING: No snapper configurations are set up for snapshots to be taken!"
|
|
exit 1
|
|
fi
|
|
|
|
exit 0
|