minor refactoring...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>

.pct-helpers

@@ -21,7 +21,7 @@ CT_DIR=${CT_DIR:=/etc/pve/lxc/}
 #QUIET=
 #DRY_RUN=
 ECHO_PREFIX="### "
-@(){
+function @ (){
 	if [ -z $DRY_RUN ] ; then
 		! [ $QUIET ] \
 			&& echo -e "${ECHO_PREFIX}$@"

host/make.sh

@@ -67,14 +67,16 @@ if xreadYes "# Create bridges?" BRIDGES ; then
 	xread "Gate ADMIN IP: " GATE_ADMIN_IP
 	readBridgeVars
 
+	INTERFACES=/etc/network/interfaces
+
 	# check if new bridges already exist in interfaces...
-	if [ -e /etc/network/interfaces ] \
+	if [ -e "$INTERFACES" ] \
 			&& grep -q \
 				"vmbr\(${WAN_BRIDGE}\|${LAN_BRIDGE}\|${ADMIN_BRIDGE}\)" \
-				/etc/network/interfaces ; then
+				"$INTERFACES" ; then
 		conflict=
 		for br in WAN_BRIDGE LAN_BRIDGE ADMIN_BRIDGE ; do
-			if grep -q "vmbr${!br}" /etc/network/interfaces ; then
+			if grep -q "vmbr${!br}" "$INTERFACES" ; then
 				conflict="${conflict}, vmbr${!br} (${br})"
 			fi
 		done
@@ -82,8 +84,8 @@ if xreadYes "# Create bridges?" BRIDGES ; then
 		exit 1
 	fi
 
-	@ cp /etc/network/interfaces{,.bak}
-	@ cp /etc/network/interfaces{,.new}
+	@ cp "$INTERFACES"{,.bak}
+	@ cp "$INTERFACES"{,.new}
 
 	BRIDGES="$(\
 		cat bridges.tpl \
@@ -93,16 +95,20 @@ if xreadYes "# Create bridges?" BRIDGES ; then
 				HOST_ADMIN_IP GATE_ADMIN_IP)"
 
 	if [ -z "$DRY_RUN" ] ; then
-		# XXX add $BRIDGES to /etc/network/interfaces either before the 
+		# XXX add $BRIDGES to "$INTERFACES" either before the 
 		#		source command or at the end...
 		# XXX
-		echo "$BRIDGES" >> /etc/network/interfaces.new
+		echo "$BRIDGES" >> "$INTERFACES".new
 	else
 		echo "$BRIDGES"
 	fi
 
-	if reviewApplyChanges /etc/network/interfaces ; then
-		@ ifreload -a
+	if reviewApplyChanges "$INTERFACES" ; then
+		if ! @ ifreload -a ; then
+			# reset settings back if ifreload fails...
+			@ cp "$INTERFACES"{.bak,}
+			@ ifreload -a	
+		fi
 	fi
 fi