71 lines
2.6 KiB
Bash
Executable file
71 lines
2.6 KiB
Bash
Executable file
#!/bin/bash
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# snap-pac
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# https://github.com/wesbarnett/snap-pac
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# Copyright (C) 2016 James W. Barnett
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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 2 of the License, or
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# (at your option) any later version.
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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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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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# Main script. Is sourced in hooks and functions are called.
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# e.g.: bash -c ". snap-pac; pre"
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declare -r prefile_prefix="/usr/share/libalpm/hooks.bin/snap-pac/.pre"
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declare -i i=0
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for x in $(ls /etc/snapper/configs); do
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source /etc/snapper/configs/$x
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if [[ $x == "root" ]]; then
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take_snapshot[i]=${PACMAN_PRE_POST:-"yes"}
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else
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take_snapshot[i]=${PACMAN_PRE_POST:-"no"}
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fi
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cleanupalgo[i]=${PACMAN_CLEANUP_ALGORITHM:-"number"}
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pre_description[i]=${PACMAN_PRE_DESCRIPTION:-"$(echo $(ps -C pacman -o args=) | sed 'sX/usr/bin/pacmanXpacmanXg')"}
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post_description[i]=${PACMAN_POST_DESCRIPTION:-"$(echo $(ps -C pacman -o args=) | sed 'sX/usr/bin/pacmanXpacmanXg')"}
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i=$(($i+1))
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done
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function pre
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{
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declare -i i=0
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for x in $(ls /etc/snapper/configs); do
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if [[ ${take_snapshot[i]} == "yes" ]];then
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snapper --config $x create --type pre --cleanup-algorithm ${cleanupalgo[i]} --print-number --description "${pre_description[i]}" > $prefile_prefix"_"$x
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fi
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i=$(($i+1))
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done
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}
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function post
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{
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declare -i i=0
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for x in $(ls /etc/snapper/configs); do
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if [[ ${take_snapshot[i]} == "yes" ]];then
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if [ -f $prefile_prefix"_"$x ]; then
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snapper --config $x create --cleanup-algorithm ${cleanupalgo[i]} --type post --pre-number $(cat $prefile_prefix"_"$x) --description "${post_description[i]}"
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rm $prefile_prefix"_"$x
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else
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echo "WARNING: $prefile_prefix"_"$x does not exist, so no post snapshot for $x configuration will be taken. If you are initially installing snap-pac, this is normal."
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fi
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fi
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i=$(($i+1))
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done
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}
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function clean
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{
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rm /usr/share/libalpm/hooks.bin/snap-pac/.pre*
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echo "NOTE: No post snapshot will be performed for this transaction, since you are removing the pacman hooks."
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}
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