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formatting, create argument for reading in configuration based on pre or post

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This commit is contained in:
James Barnett 2016-04-26 10:28:59 -05:00
parent a13a5ab706
commit cfda6a90b7
1 changed files with 31 additions and 12 deletions
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39
snap-pac
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@ -21,33 +21,52 @@
# Main script. Is sourced in hooks and functions are called. # Main script. Is sourced in hooks and functions are called.
# e.g.: bash -c ". snap-pac; pre" # e.g.: bash -c ". snap-pac; pre"
# Have to store pre snapshot number in a file, since the script is run in a
# subshell. Exporting a variable doesn't seem to work
declare -r prefile_prefix="/usr/share/libalpm/hooks.bin/snap-pac/.pre" declare -r prefile_prefix="/usr/share/libalpm/hooks.bin/snap-pac/.pre"
# find any variables set in the snapper configuration files as well as set
# pacman_cmd
function read_configs function read_configs
{ {
# pacman command that called the hook in the first place
declare -r pacman_cmd="$(echo $(ps -C pacman -o args=) | sed 'sX/usr/bin/pacmanXpacmanXg')" declare -r pacman_cmd="$(echo $(ps -C pacman -o args=) | sed 'sX/usr/bin/pacmanXpacmanXg')"
declare -r snapper_config_dir="/etc/snapper/configs"
configurations="$(ls $snapper_config_dir)"
declare -r pre_or_post=$1
declare -i i=0 declare -i i=0
for x in $(ls /etc/snapper/configs); do for x in $configurations; do
source /etc/snapper/configs/$x
source $snapper_config_dir/$x
if [[ $x == "root" ]]; then if [[ $x == "root" ]]; then
take_snapshot[i]=${PACMAN_PRE_POST:-"yes"} take_snapshot[i]=${PACMAN_PRE_POST:-"yes"}
else else
take_snapshot[i]=${PACMAN_PRE_POST:-"no"} take_snapshot[i]=${PACMAN_PRE_POST:-"no"}
fi fi
cleanupalgo[i]=${PACMAN_CLEANUP_ALGORITHM:-"number"} cleanupalgo[i]=${PACMAN_CLEANUP_ALGORITHM:-"number"}
pre_description[i]=${PACMAN_PRE_DESCRIPTION:-"$pacman_cmd"}
post_description[i]=${PACMAN_POST_DESCRIPTION:-"$pacman_cmd"} if [[ $pre_or_post == "pre" ]]; then
description[i]=${PACMAN_PRE_DESCRIPTION:-"$pacman_cmd"}
else
description[i]=${PACMAN_POST_DESCRIPTION:-"$pacman_cmd"}
fi
i=$(($i+1)) i=$(($i+1))
done done
} }
function pre function pre
{ {
read_configs read_configs pre
declare -i i=0 declare -i i=0
for x in $(ls /etc/snapper/configs); do for x in $configurations; do
if [[ ${take_snapshot[i]} == "yes" ]]; then if [[ ${take_snapshot[i]} == "yes" ]]; then
snapper --config $x create --type pre --cleanup-algorithm ${cleanupalgo[i]} --print-number --description "${pre_description[i]}" > $prefile_prefix"_"$x snapper --config $x create --type pre --cleanup-algorithm ${cleanupalgo[i]} --print-number --description "${description[i]}" > $prefile_prefix"_"$x
fi fi
i=$(($i+1)) i=$(($i+1))
done done
@ -55,12 +74,12 @@ function pre
function post function post
{ {
read_configs read_configs post
declare -i i=0 declare -i i=0
for x in $(ls /etc/snapper/configs); do for x in $configurations; do
if [[ ${take_snapshot[i]} == "yes" ]]; then if [[ ${take_snapshot[i]} == "yes" ]]; then
if [ -f $prefile_prefix"_"$x ]; then if [ -f $prefile_prefix"_"$x ]; then
snapper --config $x create --cleanup-algorithm ${cleanupalgo[i]} --type post --pre-number $(cat $prefile_prefix"_"$x) --description "${post_description[i]}" snapper --config $x create --cleanup-algorithm ${cleanupalgo[i]} --type post --pre-number $(cat $prefile_prefix"_"$x) --description "${description[i]}"
rm $prefile_prefix"_"$x rm $prefile_prefix"_"$x
else else
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." 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."