#!/bin/sh

# wrapper to make sure timedatectl works with the
# writable-paths setup on ubuntu core (making the symlink
# absolute instead of using a relative path)
# LP: #1650688 for details

set -e

TIMEDATECTL=/usr/bin/timedatectl.real

case $1 in
    set-timezone)
        $TIMEDATECTL set-timezone "$2"
        # do special handling on core devices (there /etc/localtime
        # is a symlink to /etc/writable/localtime)
        if [ -L /etc/writable/localtime ]; then
            # make a .tmp link and mv it to have "kind of" atomic
            # writing here in case of a power loss midway through
            ln -s /usr/share/zoneinfo/"$2" /etc/writable/localtime.tmp
            mv /etc/writable/localtime.tmp /etc/writable/localtime
        fi
        ;;
    *)
        $TIMEDATECTL "$@"
        ;;
esac