Why do I have to manually copy /etc/services and /etc/resolv.conf into /var/spool/postfix/etc

Colin Law clanlaw at gmail.com
Sat Jun 27 07:42:46 UTC 2015


On 27 June 2015 at 07:54, Noah <noah-list at enabled.com> wrote:
>
>
> Hi there,
>
> I am trying to figure out why I have to manually copy /etc/services and
> /etc/resolv.conf into /var/spool/postfix/etc ?
>
> I see the following lines from my /etc/init.d/postfix which should run when
> I start postfix.

Which version of Ubuntu are you using?  systemd is now used for
starting and stopping services.

Colin

>
>
> ---- snip ---
>
>         FILES="etc/localtime etc/services etc/resolv.conf etc/hosts \
>             etc/nsswitch.conf etc/nss_mdns.config"
>         for file in $FILES; do
>             [ -d ${file%/*} ] || mkdir -p ${file%/*}
>             if [ -f /${file} ]; then rm -f ${file} && cp /${file} ${file};
> fi
>             if [ -f  ${file} ]; then chmod a+rX ${file}; fi
>         done
>
>
> here is my entire /etc/init.d/postfix
>
> $ cat /etc/init.d/postfix
> #!/bin/sh -e
>
> # Start or stop Postfix
> #
> # LaMont Jones <lamont at debian.org>
> # based on sendmail's init.d script
>
> ### BEGIN INIT INFO
> # Provides:          postfix mail-transport-agent
> # Required-Start:    $local_fs $remote_fs $syslog $named $network $time
> # Required-Stop:     $local_fs $remote_fs $syslog $named $network
> # Should-Start:      postgresql mysql clamav-daemon postgrey spamassassin
> saslauthd dovecot
> # Should-Stop:       postgresql mysql clamav-daemon postgrey spamassassin
> saslauthd dovecot
> # Default-Start:     2 3 4 5
> # Default-Stop:      0 1 6
> # Short-Description: start and stop the Postfix Mail Transport Agent
> # Description:       postfix is a Mail Transport agent
> ### END INIT INFO
>
> PATH=/bin:/usr/bin:/sbin:/usr/sbin
> DAEMON=/usr/sbin/postfix
> NAME=Postfix
> TZ=
> unset TZ
>
> # Defaults - don't touch, edit /etc/default/postfix
> SYNC_CHROOT="y"
>
> test -f /etc/default/postfix && . /etc/default/postfix
>
> test -x $DAEMON && test -f /etc/postfix/main.cf || exit 0
>
> . /lib/lsb/init-functions
> #DISTRO=$(lsb_release -is 2>/dev/null || echo Debian)
>
> enabled_instances() {
>         postmulti -l -a | awk '($3=="y") { print $1}'
> }
>
> running() {
>     INSTANCE="$1"
>     if [ "X$INSTANCE" = X ]; then
>             POSTCONF="postconf"
>     else
>             POSTCONF="postmulti -i $INSTANCE -x postconf"
>     fi
>
>     queue=$($POSTCONF -h queue_directory 2>/dev/null || echo
> /var/spool/postfix)
>     if [ -f ${queue}/pid/master.pid ]; then
>         pid=$(sed 's/ //g' ${queue}/pid/master.pid)
>         # what directory does the executable live in.  stupid prelink
> systems.
>         dir=$(ls -l /proc/$pid/exe 2>/dev/null | sed 's/.* -> //;
> s/\/[^\/]*$//')
>         if [ "X$dir" = "X/usr/lib/postfix" ]; then
>             echo y
>         fi
>     fi
> }
>
> configure_instance() {
>     INSTANCE="$1"
>     if [ "X$INSTANCE" = X ]; then
>             POSTCONF="postconf"
>     else
>             POSTCONF="postmulti -i $INSTANCE -x postconf"
>     fi
>
>
>     # if you set myorigin to 'ubuntu.com' or 'debian.org', it's wrong, and
> annoys the admins of
>     # those domains.  See also sender_canonical_maps.
>
>     MYORIGIN=$($POSTCONF -h myorigin | tr 'A-Z' 'a-z')
>     if [ "X${MYORIGIN#/}" != "X${MYORIGIN}" ]; then
>         MYORIGIN=$(tr 'A-Z' 'a-z' < $MYORIGIN)
>     fi
>     if [ "X$MYORIGIN" = Xubuntu.com ] || [ "X$MYORIGIN" = Xdebian.org ];
> then
>         log_failure_msg "Invalid \$myorigin ($MYORIGIN), refusing to start"
>         log_end_msg 1
>         exit 1
>     fi
>
>     config_dir=$($POSTCONF -h config_directory)
>     # see if anything is running chrooted.
>     NEED_CHROOT=$(awk '/^[0-9a-z]/ && ($5 ~ "[-yY]") { print "y"; exit}'
> ${config_dir}/master.cf)
>
>     if [ -n "$NEED_CHROOT" ] && [ -n "$SYNC_CHROOT" ]; then
>         # Make sure that the chroot environment is set up correctly.
>         oldumask=$(umask)
>         umask 022
>         queue_dir=$($POSTCONF -h queue_directory)
>         cd "$queue_dir"
>
>         # copy the CA path if specified
>         ca_path=$($POSTCONF -h smtp_tls_CApath)
>         case "$ca_path" in
>             '') :;; # no ca_path
>             $queue_dir/*) :;;  # skip stuff already in chroot, (and to make
> vim syntax happy: */)
>             *)
>                 if test -d "$ca_path"; then
>                     dest_dir="$queue_dir/${ca_path#/}"
>                     # strip any/all trailing /
>                     while [ "${dest_dir%/}" != "${dest_dir}" ]; do
>                         dest_dir="${dest_dir%/}"
>                     done
>                     new=0
>                     if test -d "$dest_dir"; then
>                         # write to a new directory ...
>                         dest_dir="${dest_dir}.NEW"
>                         new=1
>                     fi
>                     mkdir --parent ${dest_dir}
>                     # handle files in subdirectories
>                     (cd "$ca_path" && find . -name '*.pem' -print0 | cpio
> -0pdL --quiet "$dest_dir") 2>/dev/null ||
>                         (log_failure_msg failure copying certificates; exit
> 1)
>                     c_rehash "$dest_dir" >/dev/null 2>&1
>                     if [ "$new" = 1 ]; then
>                         # and replace the old directory
>                         rm -rf "${dest_dir%.NEW}"
>                         mv "$dest_dir" "${dest_dir%.NEW}"
>                     fi
>                 fi
>                 ;;
>         esac
>
>         # if there is a CA file, copy it
>         ca_file=$($POSTCONF -h smtp_tls_CAfile)
>         case "$ca_file" in
>             $queue_dir/*) :;;  # skip stuff already in chroot
>             '') # no ca_file
>                 # or copy the bundle to preserve functionality
>                 ca_bundle=/etc/ssl/certs/ca-certificates.crt
>                 if [ -f $ca_bundle ]; then
>                     mkdir --parent "$queue_dir/${ca_bundle%/*}"
>                     cp -L "$ca_bundle" "$queue_dir/${ca_bundle%/*}"
>                 fi
>                 ;;
>             *)
>                 if test -f "$ca_file"; then
>                     dest_dir="$queue_dir/${ca_path#/}"
>                     mkdir --parent "$dest_dir"
>                     cp -L "$ca_file" "$dest_dir"
>                 fi
>                 ;;
>         esac
>
>         # if we're using unix:passwd.byname, then we need to add etc/passwd.
>         local_maps=$($POSTCONF -h local_recipient_maps)
>         if [ "X$local_maps" != "X${local_maps#*unix:passwd.byname}" ]; then
>             if [ "X$local_maps" = "X${local_maps#*proxy:unix:passwd.byname}"
> ]; then
>                 sed 's/^\([^:]*\):[^:]*/\1:x/' /etc/passwd > etc/passwd
>                 chmod a+r etc/passwd
>             fi
>         fi
>
>         FILES="etc/localtime etc/services etc/resolv.conf etc/hosts \
>             etc/nsswitch.conf etc/nss_mdns.config"
>         for file in $FILES; do
>             [ -d ${file%/*} ] || mkdir -p ${file%/*}
>             if [ -f /${file} ]; then rm -f ${file} && cp /${file} ${file};
> fi
>             if [ -f  ${file} ]; then chmod a+rX ${file}; fi
>         done
>         # ldaps needs this. debian bug 572841
>         (echo /dev/random; echo /dev/urandom) | cpio -pdL --quiet .
> 2>/dev/null || true
>         rm -f usr/lib/zoneinfo/localtime
>         mkdir -p usr/lib/zoneinfo
>         ln -sf /etc/localtime usr/lib/zoneinfo/localtime
>
>         LIBLIST=$(for name in gcc_s nss resolv; do
>             for f in /lib/*/lib${name}*.so* /lib/lib${name}*.so*; do
>                if [ -f "$f" ]; then  echo ${f#/}; fi;
>             done;
>         done)
>
>         if [ -n "$LIBLIST" ]; then
>             for f in "$LIBLIST"; do
>                 rm -f "$f"
>             done
>             tar cf - -C / $LIBLIST 2>/dev/null |tar xf -
>         fi
>         umask $oldumask
>     fi
> }
>
> case "$1" in
>     start)
>         log_daemon_msg "Starting Postfix Mail Transport Agent" postfix
>         RET=0
>         # for all instances that are not already running, handle chroot
> setup if needed, and start
>         for INSTANCE in $(enabled_instances); do
>             RUNNING=$(running $INSTANCE)
>             if [ "X$RUNNING" = X ]; then
>                 configure_instance $INSTANCE
>                 CMD="/usr/sbin/postmulti -- -i $INSTANCE -x ${DAEMON}"
>                 if ! start-stop-daemon --start --exec $CMD
> quiet-quick-start; then
>                     RET=1
>                 fi
>             fi
>         done
>         log_end_msg $RET
>     ;;
>
>     stop)
>         log_daemon_msg "Stopping Postfix Mail Transport Agent" postfix
>         RET=0
>         # for all instances that are not already running, handle chroot
> setup if needed, and start
>         for INSTANCE in $(enabled_instances); do
>             RUNNING=$(running $INSTANCE)
>             if [ "X$RUNNING" != X ]; then
>                 CMD="/usr/sbin/postmulti -i $INSTANCE -x ${DAEMON}"
>                 if ! ${CMD} quiet-stop; then
>                     RET=1
>                 fi
>             fi
>         done
>         log_end_msg $RET
>     ;;
>
>     restart)
>         $0 stop
>         $0 start
>     ;;
>
>     force-reload|reload)
>         log_action_begin_msg "Reloading Postfix configuration"
>         if ${DAEMON} quiet-reload; then
>             log_action_end_msg 0
>         else
>             log_action_end_msg 1
>         fi
>     ;;
>
>     status)
>         ALL=1
>         ANY=0
>         # for all instances that are not already running, handle chroot
> setup if needed, and start
>         for INSTANCE in $(enabled_instances); do
>             RUNNING=$(running $INSTANCE)
>             if [ "X$RUNNING" != X ]; then
>                 ANY=1
>             else
>                 ALL=0
>             fi
>         done
>         # handle the case when postmulti returns *no* configured instances
>         if [ $ANY = 0 ]; then
>            ALL=0
>         fi
>         if [ $ALL = 1 ]; then
>            log_success_msg "postfix is running"
>            exit 0
>         elif [ $ANY = 1 ]; then
>            log_success_msg "some postfix instances are running"
>            exit 0
>         else
>            log_success_msg "postfix is not running"
>            exit 3
>         fi
>     ;;
>
>     flush|check|abort)
>         ${DAEMON} $1
>     ;;
>
>     *)
>         log_action_msg "Usage: /etc/init.d/postfix
> {start|stop|restart|reload|flush|check|abort|force-reload|status}"
>         exit 1
>     ;;
> esac
>
> exit 0
>
> --
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