allow udhcpc to work properly for interfaces that are not configured through uci

SVN-Revision: 16664

diff --git a/package/base-files/files/usr/share/udhcpc/default.script b/package/base-files/files/usr/share/udhcpc/default.script
index 08b59d0864baa61d607b4b0745c3ca25f5d54299..1b02c0c18f350f12245a343db1ac41ee4bc0e532 100755 (executable)
--- a/package/base-files/files/usr/share/udhcpc/default.script
+++ b/package/base-files/files/usr/share/udhcpc/default.script
@@ -6,11 +6,13 @@ include /lib/network
 RESOLV_CONF="/tmp/resolv.conf.auto"
 
 change_state () {
+       [ -n "$ifc" ] || return
        uci_revert_state "$1" "$2" "$3" "$4"
        uci_set_state "$1" "$2" "$3" "$4"
 }
 
 uci_get() {
+       [ -n "$ifc" ] || return
        uci -P /dev/null get "$1" 2>/dev/null
 }
 
@@ -23,9 +25,11 @@ setup_interface () {
        local user_dns
        local user_router
 
-       config_get old_ip        "$ifc" ipaddr
-       config_get old_broadcast "$ifc" broadcast
-       config_get old_subnet    "$ifc" netmask
+       [ -n "$ifc" ] && {
+               config_get old_ip        "$ifc" ipaddr
+               config_get old_broadcast "$ifc" broadcast
+               config_get old_subnet    "$ifc" netmask
+       }
 
        [ "$ip" != "$old_ip" ] \
        || [ "${broadcast:-+}" != "$old_broadcast" ] \
@@ -40,12 +44,14 @@ setup_interface () {
 
 
        # Default Route
-       change_state network "$ifc" lease_gateway "$router"
-       config_get old_router "$ifc" gateway
-       user_router=$(uci_get "network.$ifc.gateway")
-       [ -n "$user_router" ] && router="$user_router"
+       [ -n "$ifc" ] && {
+               change_state network "$ifc" lease_gateway "$router"
+               config_get old_router "$ifc" gateway
+               user_router=$(uci_get "network.$ifc.gateway")
+               [ -n "$user_router" ] && router="$user_router"
+       }
 
-       [ -n "$router" ] && [ "$router" != "0.0.0.0" ] && [ "$router" != "$old_router" ] && {
+       [ -n "$router" ] && [ "$router" != "0.0.0.0" ] && [ "$router" != "255.255.255.255" ] && [ "$router" != "$old_router" ] && {
                echo "udhcpc: setting default routers: $router"
 
                local valid_gw=""
@@ -155,6 +161,7 @@ setup_interface () {
                change_state network "$ifc" dns "$dns"
        }
 
+       [ -n "$ifc" ] || return
 
        # UCI State
        change_state network "$ifc" lease_server "$serverid"
@@ -172,26 +179,34 @@ setup_interface () {
 
 
 scan_interfaces
-
-for ifc in $interfaces; do
-       config_get ifname "$ifc" ifname
-       [ "$ifname" = "$interface" ] || continue
-
-       config_get proto "$ifc" proto
-       [ "$proto" = "dhcp" ] || continue
+applied=
+for ifc in $interfaces __default; do
+       if [ "$ifc" = __default ]; then
+               ifc=""
+               [ -n "$applied" ] && continue
+       else
+               config_get ifname "$ifc" ifname
+               [ "$ifname" = "$interface" ] || continue
+
+               config_get proto "$ifc" proto
+               [ "$proto" = "dhcp" ] || continue
+               applied=true
+       fi
 
        case "$1" in
                deconfig)
                        ifconfig "$interface" 0.0.0.0
-                       env -i ACTION="ifdown" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface
+                       [ -n "$ifc" ] && {
+                               env -i ACTION="ifdown" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface
                        
-                       config_get device "$ifc" device
-                       config_get ifname "$ifc" ifname
-                       config_get aliases "$ifc" aliases
-                       uci_revert_state network "$ifc"
-                       [ -n "$device" ] && uci_set_state network "$ifc" device "$device"
-                       [ -n "$ifname" ] && uci_set_state network "$ifc" ifname "$ifname"
-                       [ -n "$aliases" ] && uci_set_state network "$ifc" aliases "$aliases"
+                               config_get device "$ifc" device
+                               config_get ifname "$ifc" ifname
+                               config_get aliases "$ifc" aliases
+                               uci_revert_state network "$ifc"
+                               [ -n "$device" ] && uci_set_state network "$ifc" device "$device"
+                               [ -n "$ifname" ] && uci_set_state network "$ifc" ifname "$ifname"
+                               [ -n "$aliases" ] && uci_set_state network "$ifc" aliases "$aliases"
+                       }
                ;;
                renew)
                        setup_interface update