From 8f526ff53067d029f42e0b887d770b28546fc0e9 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Tue, 20 May 2014 05:00:28 +0000 Subject: [PATCH] dnsmasq: Allow creating static DNS entries from static lease entries DHCP entries in /etc/config/dhcp will not automatically create A or PTR records. Add an "option dns" directive which appends an entry to /tmp/hosts/dhcp to facilitate forward and reverse DNS lookups. For instance, this item: config host option ip '192.168.0.10' option mac '00:13:57:9b:df:02' option name 'winpc' option dns '1' will add a corresponding entry to /tmp/hosts/dhcp: 192.168.0.10 winpc.lan This keeps the hostname/IP/MAC in a single place, for easy maintenance. Related: ticket #13854 reports an regression involving missing PTR records when using "config domain" to define static DNS entries for individual hosts. However, per Simon Kelley[1], the --address feature used by "config domain" was never intended to generate DNS A records for hosts. It would probably be better for the reporter to apply this patch, and then use "config host" sections instead of "config domain" sections. [1] http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2008q4/002498.html Signed-off-by: Kevin Cernekee Signed-off-by: Florian Fainelli SVN-Revision: 40799 --- package/network/services/dnsmasq/files/dnsmasq.init | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/package/network/services/dnsmasq/files/dnsmasq.init b/package/network/services/dnsmasq/files/dnsmasq.init index b5fb58c524..f7edb28806 100644 --- a/package/network/services/dnsmasq/files/dnsmasq.init +++ b/package/network/services/dnsmasq/files/dnsmasq.init @@ -13,6 +13,7 @@ ADD_LOCAL_DOMAIN=1 ADD_LOCAL_HOSTNAME=1 CONFIGFILE="/var/etc/dnsmasq.conf" +HOSTFILE="/tmp/hosts/dhcp" xappend() { local value="$1" @@ -300,6 +301,11 @@ dhcp_host_add() { [ "$broadcast" = "0" ] && broadcast= xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}" + + config_get_bool dns "$cfg" dns 0 + [ "$dns" = "1" ] && { + echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE + } } dhcp_tag_add() { @@ -528,6 +534,7 @@ start_service() { mkdir -p $(dirname $CONFIGFILE) echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE + echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE # if we did this last, we could override auto-generated config [ -f /etc/dnsmasq.conf ] && {