- link_unref(link);
-
- return 0;
-}
-
-static int dhcp_lease_lost(Link *link) {
- _cleanup_address_free_ Address *address = NULL;
- _cleanup_route_free_ Route *route_gw = NULL;
- _cleanup_route_free_ Route *route = NULL;
- struct in_addr addr;
- struct in_addr netmask;
- struct in_addr gateway;
- unsigned prefixlen;
- int r;
-
- assert(link);
- assert(link->dhcp_lease);
-
- log_warning_link(link, "DHCP lease lost");
-
- r = address_new_dynamic(&address);
- if (r >= 0) {
- r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway);
- if (r >= 0) {
- r = route_new_dynamic(&route_gw);
- if (r >= 0) {
- route_gw->family = AF_INET;
- route_gw->dst_addr.in = gateway;
- route_gw->dst_prefixlen = 32;
- route_gw->scope = RT_SCOPE_LINK;
-
- route_drop(route_gw, link, &route_drop_handler);
- link_ref(link);
- }
-
- r = route_new_dynamic(&route);
- if (r >= 0) {
- route->family = AF_INET;
- route->in_addr.in = gateway;
-
- route_drop(route, link, &route_drop_handler);
- link_ref(link);
- }
- }
-
- sd_dhcp_lease_get_address(link->dhcp_lease, &addr);
- sd_dhcp_lease_get_netmask(link->dhcp_lease, &netmask);
- prefixlen = net_netmask_to_prefixlen(&netmask);
-
- address->family = AF_INET;
- address->in_addr.in = addr;
- address->prefixlen = prefixlen;
-
- address_drop(address, link, &address_drop_handler);
- link_ref(link);
- }
-
- if (link->network->dhcp_mtu) {
- uint16_t mtu;
-
- r = sd_dhcp_lease_get_mtu(link->dhcp_lease, &mtu);
- if (r >= 0 && link->original_mtu != mtu) {
- r = link_set_mtu(link, link->original_mtu);
- if (r < 0) {
- log_warning_link(link, "DHCP error: could not reset MTU");
- link_enter_failed(link);
- return r;
- }
- }
- }
-
- if (link->network->dhcp_hostname) {
- const char *hostname = NULL;
-
- r = sd_dhcp_lease_get_hostname(link->dhcp_lease, &hostname);
- if (r >= 0 && hostname) {
- r = link_set_hostname(link, "");
- if (r < 0)
- log_error("Failed to reset transient hostname");
- }
- }
-
- link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease);
-
- return 0;
-}
-
-static int dhcp_lease_acquired(sd_dhcp_client *client, Link *link) {
- sd_dhcp_lease *lease;
- struct in_addr address;
- struct in_addr netmask;
- struct in_addr gateway;
- unsigned prefixlen;
- struct in_addr *nameservers;
- size_t nameservers_size;
- int r;
-
- assert(client);
- assert(link);
-
- r = sd_dhcp_client_get_lease(client, &lease);
- if (r < 0) {
- log_warning_link(link, "DHCP error: no lease: %s",
- strerror(-r));
- return r;
- }
-
- r = sd_dhcp_lease_get_address(lease, &address);
- if (r < 0) {
- log_warning_link(link, "DHCP error: no address: %s",
- strerror(-r));
- return r;
- }
-
- r = sd_dhcp_lease_get_netmask(lease, &netmask);
- if (r < 0) {
- log_warning_link(link, "DHCP error: no netmask: %s",
- strerror(-r));
- return r;
- }
-
- prefixlen = net_netmask_to_prefixlen(&netmask);
-
- r = sd_dhcp_lease_get_router(lease, &gateway);
- if (r < 0 && r != -ENOENT) {
- log_warning_link(link, "DHCP error: %s", strerror(-r));
- return r;
- }
-
- if (r >= 0)
- log_struct_link(LOG_INFO, link,
- "MESSAGE=%s: DHCPv4 address %u.%u.%u.%u/%u via %u.%u.%u.%u",
- link->ifname,
- ADDRESS_FMT_VAL(address),
- prefixlen,
- ADDRESS_FMT_VAL(gateway),
- "ADDRESS=%u.%u.%u.%u",
- ADDRESS_FMT_VAL(address),
- "PREFIXLEN=%u",
- prefixlen,
- "GATEWAY=%u.%u.%u.%u",
- ADDRESS_FMT_VAL(gateway),
- NULL);
- else
- log_struct_link(LOG_INFO, link,
- "MESSAGE=%s: DHCPv4 address %u.%u.%u.%u/%u",
- link->ifname,
- ADDRESS_FMT_VAL(address),
- prefixlen,
- "ADDRESS=%u.%u.%u.%u",
- ADDRESS_FMT_VAL(address),
- "PREFIXLEN=%u",
- prefixlen,
- NULL);
-
- link->dhcp_lease = lease;
-
- if (link->network->dhcp_dns) {
- r = sd_dhcp_lease_get_dns(lease, &nameservers, &nameservers_size);
- if (r >= 0) {
- r = manager_update_resolv_conf(link->manager);
- if (r < 0)
- log_error("Failed to update resolv.conf");
- }
- }
-
- if (link->network->dhcp_mtu) {
- uint16_t mtu;
-
- r = sd_dhcp_lease_get_mtu(lease, &mtu);
- if (r >= 0) {
- r = link_set_mtu(link, mtu);
- if (r < 0)
- log_error_link(link, "Failed to set MTU "
- "to %" PRIu16, mtu);
- }
- }
-
- if (link->network->dhcp_hostname) {
- const char *hostname;
-
- r = sd_dhcp_lease_get_hostname(lease, &hostname);
- if (r >= 0) {
- r = link_set_hostname(link, hostname);
- if (r < 0)
- log_error("Failed to set transient hostname "
- "to '%s'", hostname);
- }
- }
-
- link_enter_set_addresses(link);