36 lines
993 B
Bash
36 lines
993 B
Bash
#!/bin/bash
|
|
|
|
set -e
|
|
|
|
# 2 locks are needed. The first one ensure we don't run
|
|
# The pre-backup script twice. It's an atomic lock.
|
|
# Then we need a second lock which will last until the post-backup ran
|
|
# This one doesn't need to be atomic (as we already checked this)
|
|
PRELOCKFILE="/var/lock/pre-bkp.lock"
|
|
exec 200>$PRELOCKFILE
|
|
flock -n 200 || ( echo "Couldn't aquire pre-backup lock" && exit 1 )
|
|
PID=$$
|
|
echo $PID 1>&200
|
|
|
|
if [ -e /var/lock/bkp.lock ]; then
|
|
# Consider the lock to be stale if it's older than 8 hours
|
|
if [ "$(( $(date +"%s") - $(stat -c "%Y" /var/lock/bkp.lock) ))" -gt "28800" ]; then
|
|
rm /var/lock/bkp.lock
|
|
else
|
|
echo "Another backup is running"
|
|
exit 1
|
|
fi
|
|
fi
|
|
touch /var/lock/bkp.lock
|
|
if [ -d "/etc/backup/pre.d" ]; then
|
|
for H in $(find /etc/backup/pre.d -type f -o -type l | sort); do
|
|
if [ -x $H ]; then
|
|
echo "Running hook $H"
|
|
$H "$@"
|
|
echo "Finished hook $H"
|
|
else
|
|
echo "Skiping hook $H as it's not executable"
|
|
fi
|
|
done
|
|
fi
|