postinst is in opendnssec-common 1.3.4-1ubuntu1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | #!/bin/sh
# postinst script for opendnssec-conf
set -e
set_perms() {
    if ! dpkg-statoverride --list "$4" >/dev/null; then
        dpkg-statoverride --quiet --update --add "$@"
    fi
}
case "$1" in
    configure)
	if ! getent passwd opendnssec > /dev/null; then
            adduser --quiet --system --group --no-create-home --home /var/lib/opendnssec opendnssec
	fi
	set_perms root opendnssec 0750 /etc/opendnssec
	set_perms root opendnssec 0750 /var/lib/opendnssec
	for dir in tmp signconf unsigned signed db; do
	    set_perms opendnssec opendnssec 0755 /var/lib/opendnssec/$dir
	done
	for conf in conf.xml kasp.xml zonefetch.xml zonelist.xml; do
	    ucf /usr/share/opendnssec/$conf /etc/opendnssec/$conf
	    ucfr opendnssec /etc/opendnssec/$conf
	    set_perms root opendnssec 0640 /etc/opendnssec/$conf
	done
    ;;
    abort-upgrade|abort-remove|abort-deconfigure)
    ;;
    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac
exit 0
 |