busybox: sysntpd: option to bind server to iface

NTPD in busybox has option -I to bind server to IFACE.
However, capabilities of the busybox are limited, the -I option cannot be
repeated and only one interface can be effectively specified in it.
This option is currently not configurable via UCI.
The patch adds an interface option to the system config, ntp section.
Also sort options for uci_load_validate alphabetically.

Signed-off-by: Alexey Dobrovolsky <dobrovolskiy.alexey@gmail.com>

diff --git a/package/utils/busybox/files/sysntpd b/package/utils/busybox/files/sysntpd
index e4a070762f2e6be299db8a7af7a8383062b0cf57..c4c311c242fead663c9b11b4c5522faf841b8845 100755 (executable)
--- a/package/utils/busybox/files/sysntpd
+++ b/package/utils/busybox/files/sysntpd
@@ -30,7 +30,12 @@ get_dhcp_ntp_servers() {
 
 validate_ntp_section() {
        uci_load_validate system timeserver "$1" "$2" \
-               'server:list(host)' 'enabled:bool:1' 'enable_server:bool:0' 'use_dhcp:bool:1' 'dhcp_interface:list(string)'
+               'dhcp_interface:list(string)' \
+               'enable_server:bool:0' \
+               'enabled:bool:1' \
+               'interface:string' \
+               'server:list(host)' \
+               'use_dhcp:bool:1'
 }
 
 start_ntpd_instance() {
@@ -49,7 +54,10 @@ start_ntpd_instance() {
 
        procd_open_instance
        procd_set_param command "$PROG" -n -N
-       [ "$enable_server" = "1" ] && procd_append_param command -l
+       if [ "$enable_server" = "1" ]; then
+               procd_append_param command -l
+               [ -n "$interface" ] && procd_append_param command -I $interface
+       fi
        [ -x "$HOTPLUG_SCRIPT" ] && procd_append_param command -S "$HOTPLUG_SCRIPT"
        for peer in $server; do
                procd_append_param command -p $peer