hostapd: truncate default mac file before adding entries to it (#13797)

SVN-Revision: 37114

package/network/services/hostapd/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=hostapd
 PKG_VERSION:=20130630
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_REV:=9e6a321815f924e1e42896538d639e62d7786f6a
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2

package/network/services/hostapd/files/hostapd.sh

@@ -220,7 +220,9 @@ hostapd_set_bss_options() {
 	if [ -z "$macfile" ]
 	then
 		# if no macfile has been specified, fallback to the default name
+		# and truncate file to avoid aggregating entries over time
 		macfile="/var/run/hostapd-$ifname.maclist"
+		echo "" > "$macfile"
 	else
 		if [ -n "$maclist" ]
 		then