Add a license and do more quoting

etc.BSD/rc.devd

@@ -1,17 +1,41 @@
 #!/bin/sh
+# Copyright 2007 Roy Marples
+# All rights reserved
 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+# Inform RC that we are in the background and hotplugged
 export IN_BACKGROUND=yes
 export IN_HOTPLUG=yes
 
 getmedia() {
-	ifconfig $1 | while read line; do
+	ifconfig "$1" | while read line; do
-		case ${line} in
+		case "${line}" in
 			media:" "*) echo "${line}"; return;;
 		esac
 	done
 }
 
-set -x
+# Try and create an init script for network interfaces
 if [ ! -e /etc/init.d/"$1" ]; then
 	base=$(basename ${1%%.*})
 	if [ "${base}" = "net" ]; then
@@ -20,8 +44,9 @@ if [ ! -e /etc/init.d/"$1" ]; then
 		base="net.lo0"
 	fi
 	if [ -e /etc/init.d/"${base}" -a "${base}" != "$1" ]; then
-		ln -s "${base}" /etc/init.d/$1
+		ln -s "${base}" /etc/init.d/"$1"
 	fi
 fi
 
-exec /etc/init.d/$1 $2
+# Run the init script
+exec /etc/init.d/"$1" "$2"