FreeBSD slicefix change to handle disabling an interface.

clientside/tmcc/freebsd/slicefix

 #!/bin/sh
 #
-# Copyright (c) 2000-2014 University of Utah and the Flux Group.
+# Copyright (c) 2000-2015 University of Utah and the Flux Group.
 # 
 # {{{EMULAB-LICENSE
 # 
@@ -122,6 +122,22 @@ if [ -n "$BIOSDISK" ]; then
     esac
 fi
 
+#
+# See if we need to exclude the management interface.
+# If an interface is specified and we can parse, create the "hint"
+# line for loader.conf.
+#
+DISABLEIF=$SLICEFIX_DISABLEIF
+DISABLEHINT=
+if [ -n "$DISABLEIF" ]; then
+    _str=`echo $DISABLEIF | sed -E -e 's/^([a-zA-Z0-9]*[a-zA-Z])([0-9]+)/hint.\1.\2.disabled/'`
+    if [ "$_str" = "$DISABLEIF" ]; then
+	echo "WARNING: unparsable define name \"$DISABLEIF\" ignored"
+    else
+	DISABLEHINT=$_str
+    fi
+fi
+
 #
 # Find out what our console should be:
 #   if $CONSOLE is set and valid, use that
@@ -286,6 +302,11 @@ dofreebsd() {
 	    fixit=1
         fi
 
+	# Disable mgmt interface?
+	if [ -n "$DISABLEHINT" ]; then
+	    fixit=1
+	fi
+
 	# If our disk/part does not appear anywhere in fstab, we need to fix it
 	grep "^/dev/${disk}s${part}" /mnt/etc/fstab >/dev/null 2>&1
 	case $? in
@@ -587,6 +608,16 @@ EOF2
 	    fi
 	fi
 
+	#
+	# Disable the management interface in the OS.
+	#
+	if [ -n "$DISABLEHINT" ]; then
+	    cat <<EOF0
+# disable dedicated management interface
+$DISABLEHINT="1"
+EOF0
+	fi
+
 	#
 	# Fix up console.
 	# null and vga are easy, just set console={null,vid}console