#! /bin/sh

### BEGIN INIT INFO
# Provides: rsyncd
# Required-Start: $remote_fs $syslog
# Required-Stop: $remote_fs $syslog
# Should-Start: $named
# Default-Start: 2 3 4 5
# Default-Stop:
# Short-Description: fast remote file copy program daemon
# Description: rsync is a program that allows files to be copied to and
# from remote machines in much the same way as rcp.
# This provides rsyncd daemon functionality.
### END INIT INFO

set -e

# /etc/init.d/rsync: start and stop the rsync daemon

DAEMON=/usr/bin/rsync
RSYNC_ENABLE=false
RSYNC_OPTS=''
RSYNC_DEFAULTS_FILE=/etc/default/rsync
RSYNC_CONFIG_FILE=/etc/rsyncd.conf
RSYNC_PID_FILE=/var/run/rsync.pid
RSYNC_NICE_PARM=''
RSYNC_IONICE_PARM=''

test -x $DAEMON || exit 0

. /lib/lsb/init-functions

if [ -s $RSYNC_DEFAULTS_FILE ]; then
. $RSYNC_DEFAULTS_FILE
case "x$RSYNC_ENABLE" in
xtrue|xfalse) ;;
xinetd) exit 0
;;
*) log_failure_msg "Value of RSYNC_ENABLE in $RSYNC_DEFAULTS_FILE must be either 'true' or 'false';"
log_failure_msg "not starting rsync daemon."
exit 1
;;
esac
case "x$RSYNC_NICE" in
x[0-9]) RSYNC_NICE_PARM="--nicelevel $RSYNC_NICE";;
x1[0-9]) RSYNC_NICE_PARM="--nicelevel $RSYNC_NICE";;
x) ;;
*) log_warning_msg "Value of RSYNC_NICE in $RSYNC_DEFAULTS_FILE must be a value between 0 and 19 (inclusive);"
log_warning_msg "ignoring RSYNC_NICE now."
;;
esac
case "x$RSYNC_IONICE" in
x-c[123]*) RSYNC_IONICE_PARM="$RSYNC_IONICE";;
x) ;;
*) log_warning_msg "Value of RSYNC_IONICE in $RSYNC_DEFAULTS_FILE must be -c1, -c2 or -c3;"
log_warning_msg "ignoring RSYNC_IONICE now."
;;
esac
fi

export PATH="${PATH:+$PATH:}/usr/sbin:/sbin"

rsync_start() {
if [ ! -s "$RSYNC_CONFIG_FILE" ]; then
log_failure_msg "missing or empty config file $RSYNC_CONFIG_FILE"
log_end_msg 1
exit 0
fi
# See ionice(1)
if [ -n "$RSYNC_IONICE_PARM" ] && [ -x /usr/bin/ionice ] &&
/usr/bin/ionice "$RSYNC_IONICE_PARM" true 2>/dev/null; then
/usr/bin/ionice "$RSYNC_IONICE_PARM" -p$$ > /dev/null 2>&1
fi
if start-stop-daemon --start --quiet --background \
--pidfile $RSYNC_PID_FILE --make-pidfile \
$RSYNC_NICE_PARM --exec $DAEMON \
-- --no-detach --daemon --config "$RSYNC_CONFIG_FILE" $RSYNC_OPTS
then
rc=0
sleep 1
if ! kill -0 $(cat $RSYNC_PID_FILE) >/dev/null 2>&1; then
log_failure_msg "rsync daemon failed to start"
rc=1
fi
else
rc=1
fi
if [ $rc -eq 0 ]; then
log_end_msg 0
else
log_end_msg 1
rm -f $RSYNC_PID_FILE
fi
} # rsync_start


case "$1" in
start)
if "$RSYNC_ENABLE"; then
log_daemon_msg "Starting rsync daemon" "rsync"
if [ -s $RSYNC_PID_FILE ] && kill -0 $(cat $RSYNC_PID_FILE) >/dev/null 2>&1; then
log_progress_msg "apparently already running"
log_end_msg 0
exit 0
fi
rsync_start
else
if [ -s "$RSYNC_CONFIG_FILE" ]; then
[ "$VERBOSE" != no ] && log_warning_msg "rsync daemon not enabled in $RSYNC_DEFAULTS_FILE, not starting..."
fi
fi
;;
stop)
log_daemon_msg "Stopping rsync daemon" "rsync"
start-stop-daemon --stop --quiet --oknodo --pidfile $RSYNC_PID_FILE
log_end_msg $?
rm -f $RSYNC_PID_FILE
;;

reload|force-reload)
log_warning_msg "Reloading rsync daemon: not needed, as the daemon"
log_warning_msg "re-reads the config file whenever a client connects."
;;

restart)
set +e
if $RSYNC_ENABLE; then
log_daemon_msg "Restarting rsync daemon" "rsync"
if [ -s $RSYNC_PID_FILE ] && kill -0 $(cat $RSYNC_PID_FILE) >/dev/null 2>&1; then
start-stop-daemon --stop --quiet --oknodo --pidfile $RSYNC_PID_FILE || true
sleep 1
else
log_warning_msg "rsync daemon not running, attempting to start."
rm -f $RSYNC_PID_FILE
fi
rsync_start
else
if [ -s "$RSYNC_CONFIG_FILE" ]; then
[ "$VERBOSE" != no ] && log_warning_msg "rsync daemon not enabled in $RSYNC_DEFAULTS_FILE, not starting..."
fi
fi
;;

status)
status_of_proc -p $RSYNC_PID_FILE "$DAEMON" rsync
exit $? # notreached due to set -e
;;
*)
echo "Usage: /etc/init.d/rsync {start|stop|reload|force-reload|restart|status}"
exit 1
esac

exit 0