#!/bin/sh # ### BEGIN INIT INFO # Provides: resolvconf # Required-Start: $local_fs # Required-Stop: $local_fs # X-Start-Before: networking ifupdown # Default-Start: S # Default-Stop: 0 6 # Short-Description: Nameserver information manager # Description: This service manages the list of nameserver addresses # used by the libc resolver and name service caches ### END INIT INFO # # This file is part of the resolvconf package. # # We really need "X-Stop-Before: networking ifupdown" too because # terminal ifdowns shouldn't update resolv.conf; # however there is unfortunately no such thing as "X-Stop-Before". # # This file is not used in Ubuntu. # # Don't use set -e; check return status instead. [ -x /sbin/resolvconf ] || exit 0 PATH=/sbin:/bin RUN_DIR=/run/resolvconf ENABLE_UPDATES_FLAGFILE="${RUN_DIR}/enable-updates" POSTPONED_UPDATE_FLAGFILE="${RUN_DIR}/postponed-update" . /lib/lsb/init-functions # Abort if Upstart is in use, as per Policy ยง9.11.1. case "$1" in start|restart|force-reload) init_is_upstart && exit 1 ;; stop) init_is_upstart && exit 0 ;; esac # $1 EXITSTATUS # [$2 MESSAGE] log_action_end_msg_and_exit() { log_action_end_msg "$1" ${2:+"$2"} exit $1 } create_runtime_directories() { umask 022 if [ ! -d "$RUN_DIR" ] ; then [ -L "$RUN_DIR" ] || log_action_end_msg_and_exit 1 "$RUN_DIR is neither a directory nor a symbolic link" # It's a symlink. Its target is not a dir. { RUN_CANONICALDIR="$(readlink -f "$RUN_DIR")" && [ "$RUN_CANONICALDIR" ] ; } || log_action_end_msg_and_exit 1 "Canonical path of the run directory could not be determined" # Create directory at the target mkdir "$RUN_CANONICALDIR" || log_action_end_msg_and_exit 1 "Error creating directory $RUN_CANONICALDIR" fi # The resolvconf run directory now exists. if [ ! -d "${RUN_DIR}/interface" ] ; then mkdir "${RUN_DIR}/interface" || log_action_end_msg_and_exit 1 "Error creating directory ${RUN_DIR}/interface" fi # The interface directory now exists. We are done. return } wipe_runtime_directories() { # Delete files in the resolvconf run directory (target) but not the directory itself [ -d "$RUN_DIR" ] || return rm -f "$RUN_DIR"/resolv.conf rm -f "$ENABLE_UPDATES_FLAGFILE" rm -f "$POSTPONED_UPDATE_FLAGFILE" rm -rf "${RUN_DIR}/interface/*" return } case "$1" in start) # The "start" method should only be used at boot time. # Don't run this on package upgrade, for example. log_action_begin_msg "Setting up resolvconf" # Wipe runtime directories in case they aren't on a tmpfs wipe_runtime_directories # Create runtime directories in case they are on a tmpfs create_runtime_directories # Request a postponed update (needed in case the base file has content). :> "$POSTPONED_UPDATE_FLAGFILE" || log_action_end_msg_and_exit 1 "failed requesting update" # Enable updates and perform the postponed update. resolvconf --enable-updates || log_action_end_msg_and_exit 1 "failed to enable updates" log_action_end_msg_and_exit 0 ;; stop) # The "stop" method should only be used at shutdown time. log_action_begin_msg "Stopping resolvconf" resolvconf --disable-updates || log_action_end_msg_and_exit 1 "failed to disable updates" log_action_end_msg_and_exit 0 ;; restart) log_action_begin_msg "Restarting resolvconf" resolvconf --enable-updates || log_action_end_msg_and_exit 1 "failed to enable updates" log_action_end_msg_and_exit 0 ;; reload|force-reload) resolvconf -u || log_action_end_msg_and_exit 1 "failed to update" exit 0 ;; enable-updates) resolvconf --enable-updates || log_action_end_msg_and_exit 1 "failed to enable updates" exit 0 ;; disable-updates) resolvconf --disable-updates || log_action_end_msg_and_exit 1 "failed to disable updates" exit 0 ;; status) if resolvconf --updates-are-enabled ; then log_success_msg "resolvconf updates are enabled" else log_failure_msg "resolvconf updates are disabled" fi exit 0 ;; *) echo "Usage: /etc/init.d/resolvconf {start|stop|restart|reload|force-reload|enable-updates|disable-updates|status}" >&2 exit 3 ;; esac # Don't reach here exit 99