ntpclient: initial frequency offset configuration and adjtimex invocation

This adds a new config file section "ntpdrift" to /etc/config/ntpclient
to support setting an initial value "freq" for frequency offset.
Changes /etc/hotplug.d/iface/20-ntpclient to call adjtimex
and do an initial frequency offset before starting ntpclient.

Signed-off-by: Steffen Hoffmann <hoff.st@shaas.net>
git-svn-id: svn://svn.openwrt.org/openwrt/packages@10355 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/net/ntpclient/files/ntpclient.config b/net/ntpclient/files/ntpclient.config
index 25a6269..0d9c010 100644 (file)
--- a/net/ntpclient/files/ntpclient.config
+++ b/net/ntpclient/files/ntpclient.config
@@ -17,3 +17,6 @@ config ntpclient
        option hostname '3.openwrt.pool.ntp.org'
        option port     '123'
        option count    '1'
+
+config ntpdrift
+       option freq     '0'

diff --git a/net/ntpclient/files/ntpclient.hotplug b/net/ntpclient/files/ntpclient.hotplug
index 2abb036..403be9d 100644 (file)
--- a/net/ntpclient/files/ntpclient.hotplug
+++ b/net/ntpclient/files/ntpclient.hotplug
@@ -9,6 +9,17 @@ config_cb() {
        local cfgtype
        config_get cfgtype "$cfg" TYPE
 
+       # initial frequency offset, if configured
+       case "$cfgtype" in
+               ntpdrift)
+                       config_get freq         $cfg freq
+
+                       if [ ! "$freq" = "" ]; then
+                               adjtimex -f $freq
+                       fi
+               ;;
+       esac
+
        case "$cfgtype" in
                ntpclient)
                        config_get hostname     $cfg hostname