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authormbm <mbm@3c298f89-4303-0410-b956-a3cf2f4a3e73>2005-05-30 09:09:58 +0000
committermbm <mbm@3c298f89-4303-0410-b956-a3cf2f4a3e73>2005-05-30 09:09:58 +0000
commit19a1490f400695cadb7b94fe70cde19d6c45bc8f (patch)
treedd2c97b19abc4292f9cd24b0af9f72e0c4af755f /target/default/target_skeleton/etc/init.d
parent64caeb211dbae2b992463d484d6ddaae852b7de2 (diff)
make dnsmasq probe for dhcp servers before starting a dhcp server
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@1110 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/default/target_skeleton/etc/init.d')
-rwxr-xr-xtarget/default/target_skeleton/etc/init.d/S50dnsmasq25
1 files changed, 24 insertions, 1 deletions
diff --git a/target/default/target_skeleton/etc/init.d/S50dnsmasq b/target/default/target_skeleton/etc/init.d/S50dnsmasq
index 995c1b6e7..55bbc3719 100755
--- a/target/default/target_skeleton/etc/init.d/S50dnsmasq
+++ b/target/default/target_skeleton/etc/init.d/S50dnsmasq
@@ -1,2 +1,25 @@
#!/bin/sh
-/usr/sbin/dnsmasq
+. /etc/functions.sh
+
+# interface to use for DHCP
+iface=lan
+
+ifname=$(nvram get ${iface}_ifname)
+ipaddr=$(nvram get ${iface}_ipaddr)
+netmask=$(nvram get ${iface}_netmask)
+
+# check for existing DHCP server
+udhcpc -n -q -R -s /dev/zero -i $ifname >&- || {
+
+ ipaddr=$(ip2int $ipaddr)
+ netmask=$(ip2int ${netmask:-255.255.255.0})
+ network=$((ipaddr&netmask))
+
+ start=$(nvram get dhcp_start)
+ start=$((network+${start:-100}))
+ end=$(nvram get dhcp_num)
+ end=$((start+${end:-150}))
+
+ args="-K -F $(int2ip $start),$(int2ip $end),$(int2ip $netmask),12h"
+}
+/usr/sbin/dnsmasq ${args}