base-files: - add sysupgrade support for keepfile hints * introduces /lib/upgrade/keep.d/ for per-package keepfile lists * introduces /etc/sysupgrade.conf for user defined keepfile hints - prime /lib/upgrade/keep.d/base-files-essential to keep sysupgrade usable for images without opkg - change sysupgrade to build the keepfile list from /lib/upgrade/keep.d/, /etc/sysupgrade.conf and opkg list-changed-conffiles

SVN-Revision: 23258

package/base-files/files/sbin/sysupgrade

@@ -55,8 +55,9 @@ EOF
 
 add_uci_conffiles() {
 	local file="$1"
-	( find /etc/config /etc/passwd /etc/group /etc/dropbear \
-		/etc/firewall.user /etc/rc.local -type f;
+	( find $(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
+		/etc/sysupgrade.conf /lib/upgrade/keep.d/* 2>/dev/null) \
+		-type f 2>/dev/null;
 	  opkg list-changed-conffiles ) | sort -u > "$file"
 	return 0
 }