#!/bin/sh
# update resolv.conf in postfix chroot environment
default_config_directory=/etc/postfix
postconf=/usr/sbin/postconf
[ -d ${default_config_directory} ] || exit 0
[ -x ${postconf} ] || exit 0
multi_instance_directories=`postconf -c ${default_config_directory} -h multi_instance_directories 2>/dev/null`

for confdir in ${default_config_directory} ${multi_instance_directories}; do
	chroot=`${postconf} -c ${confdir} -h queue_directory 2>/dev/null`
	chroot_resolv=${chroot}/etc/resolv.conf
	[ -f ${chroot_resolv} -a /etc/resolv.conf -nt ${chroot_resolv} ] &&
		cp -pf /etc/resolv.conf /var/spool/postfix/etc/resolv.conf > /dev/null
done

# i have no way to check if we are not chrooted and resolv.conf changed, i'll reload it anyway
[ -f /var/lock/subsys/postfix ] && /usr/sbin/postfix reload 2>/dev/null || true