Index: head/usr.sbin/periodic/etc/weekly/340.noid
===================================================================
--- head/usr.sbin/periodic/etc/weekly/340.noid	(revision 342140)
+++ head/usr.sbin/periodic/etc/weekly/340.noid	(revision 342141)
@@ -1,47 +1,58 @@
 #!/bin/sh -
 #
 # $FreeBSD$
 #
 
 # If there is a global system configuration file, suck it in.
 #
 if [ -r /etc/defaults/periodic.conf ]
 then
     . /etc/defaults/periodic.conf
     source_periodic_confs
 fi
 
 case "$weekly_noid_enable" in
     [Yy][Ee][Ss])
 	echo ""
 	echo "Check for files with an unknown user or group:"
 
 	# Host should not test jailed subtrees as jails have their own
 	# databases of users and groups. Leave them for jailed invocations
 	# of this script.
 
 	exclude=''
 	if [ $(sysctl -n security.jail.jailed) = 0 ]; then
+	    # For jail_conf
+	    . /etc/rc.subr
+	    load_rc_config jail
+
 	    sep=:
 	    OIFS="$IFS"
 	    IFS="$sep"
-	    for param in $(jail -f "`sysrc -n jail_conf`" -e "$sep" 2>/dev/null)
+	    for param in $(jail -f "$jail_conf" -e "$sep" 2>/dev/null)
 	    do
 		case "$param" in
-		    path=*) exclude="$exclude -path ${param#path=} -prune -or"
+		    path=*)
+			_p=${param#path=}
+			if [ -z "$_p" -o "$_p" = / ]; then
+				continue
+			fi
+
+			exclude="$exclude -path $_p -prune -or"
+			;;
 		esac
 	    done
 	    IFS="$OIFS"
 	fi
 
 	rc=$(find -H ${weekly_noid_dirs:-/} \
 	    \( $exclude ! -fstype local -prune -or -name \* \) -and \
 	    \( -nogroup -o -nouser \) -print | sed 's/^/  /' |
 	    tee /dev/stderr | wc -l)
 	[ $rc -gt 1 ] && rc=1
 	;;
 
     *)  rc=0;;
 esac
 
 exit $rc