Add a script_name_sep rc.conf knob to specify the IFS character

for separating the startup scripts' list into individual filenames.

Run the shutdown scripts in reverse alphabetical order, so dependent
services are stopped before the services they depend upon.

Reviewed by:	-arch, -audit
MFC after:	3 weeks

1 files changed, 12 insertions, 5 deletions

diff --git a/etc/rc.shutdown b/etc/rc.shutdown
index 0f77f47..1a565c7 100644
--- a/etc/rc.shutdown
+++ b/etc/rc.shutdown
@@ -102,17 +102,24 @@ case ${local_startup} in
 [Nn][Oo] | '')
 	;;
 *)
+	slist=""
 	for dir in ${local_startup}; do
 		if [ -d "${dir}" ]; then
 			for script in ${dir}/*.sh; do
-				if [ -x "${script}" ]; then
-					(set -T
-					 trap 'exit 1' 2
-					 ${script} stop)
-				fi
+				slist="${script}${script_name_sep}${slist}"
 			done
 		fi
 	done
+	script_save_sep="$IFS"
+	IFS="${script_name_sep}"
+	for script in ${slist}; do
+		if [ -x "${script}" ]; then
+			(set -T
+			trap 'exit 1' 2
+			${script} stop)
+		fi
+	done
+	IFS="${script_save_sep}"
 	echo '.'
 	;;
 esac