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Filename : mariadb-common.preinst

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#!/bin/sh
set -e

if [ "$1" = "install" ] || [ "$1" = "upgrade" ]; then
    if dpkg --compare-versions "$2" lt-nl "10.0.20-3~" ; then

        # revert fallback my.cnf symlink setup performed by mariadb-common
        # from 10.0.17-1~exp2 upto 10.0.20-2
        if [ -L /etc/mysql/my.cnf ] && [ -f /etc/mysql/my.cnf.old ]; then
            if [ "$(readlink /etc/mysql/my.cnf)" = "mariadb.cnf" ]; then
                echo "Reverting my.cnf -> mariadb.cnf symlink setup by mariadb-common"
                rm /etc/mysql/my.cnf
                mv /etc/mysql/my.cnf.old /etc/mysql/my.cnf
            fi
        fi

    fi
fi