#include "networkd.h"
#include "libudev-private.h"
#include "util.h"
+#include "bus-util.h"
+#include "network-internal.h"
+
+#include "dhcp-lease-internal.h"
+
+static int ipv4ll_address_update(Link *link, bool deprecate);
+static bool ipv4ll_is_bound(sd_ipv4ll *ll);
int link_new(Manager *manager, struct udev_device *device, Link **ret) {
_cleanup_link_free_ Link *link = NULL;
- const char *mac;
- struct ether_addr *mac_addr;
const char *ifname;
int r;
+ assert(manager);
+ assert(manager->links);
assert(device);
assert(ret);
if (link->ifindex <= 0)
return -EINVAL;
- mac = udev_device_get_sysattr_value(device, "address");
- if (mac) {
- mac_addr = ether_aton(mac);
- if (mac_addr)
- memcpy(&link->mac, mac_addr, sizeof(struct ether_addr));
- }
+ r = asprintf(&link->state_file, "/run/systemd/network/links/%"PRIu64,
+ link->ifindex);
+ if (r < 0)
+ return -ENOMEM;
ifname = udev_device_get_sysname(device);
link->ifname = strdup(ifname);
if (r < 0)
return r;
+ link->udev_device = udev_device_ref(device);
+
*ret = link;
link = NULL;
assert(link->manager);
- if (link->dhcp)
- sd_dhcp_client_free(link->dhcp);
+ sd_dhcp_client_free(link->dhcp_client);
+ sd_dhcp_lease_unref(link->dhcp_lease);
- route_free(link->dhcp_route);
- link->dhcp_route = NULL;
-
- address_free(link->dhcp_address);
- link->dhcp_address = NULL;
+ sd_ipv4ll_free(link->ipv4ll);
hashmap_remove(link->manager->links, &link->ifindex);
free(link->ifname);
+ free(link->state_file);
+
+ udev_device_unref(link->udev_device);
free(link);
}
-int link_add(Manager *m, struct udev_device *device, Link **ret) {
+int link_get(Manager *m, int ifindex, Link **ret) {
Link *link;
- Network *network;
- int r;
- uint64_t ifindex;
- const char *devtype;
+ uint64_t ifindex_64;
assert(m);
- assert(device);
-
- ifindex = udev_device_get_ifindex(device);
- link = hashmap_get(m->links, &ifindex);
- if (link) {
- *ret = link;
- return -EEXIST;
- }
+ assert(m->links);
+ assert(ifindex);
+ assert(ret);
- r = link_new(m, device, &link);
- if (r < 0)
- return r;
+ ifindex_64 = ifindex;
+ link = hashmap_get(m->links, &ifindex_64);
+ if (!link)
+ return -ENODEV;
*ret = link;
- devtype = udev_device_get_devtype(device);
- if (streq_ptr(devtype, "bridge")) {
- r = bridge_set_link(m, link);
- if (r < 0 && r != -ENOENT)
- return r;
- }
-
- r = network_get(m, device, &network);
- if (r < 0)
- return r == -ENOENT ? 0 : r;
-
- r = network_apply(m, network, link);
- if (r < 0)
- return r;
-
return 0;
}
assert(link);
assert(link->state == LINK_STATE_SETTING_ROUTES);
- log_info("%s: link configured", link->ifname);
+ log_info_link(link, "link configured");
link->state = LINK_STATE_CONFIGURED;
+ link_save(link);
+
return 0;
}
static void link_enter_failed(Link *link) {
assert(link);
- log_warning("%s: failed", link->ifname);
+ log_warning_link(link, "failed");
link->state = LINK_STATE_FAILED;
+
+ link_save(link);
}
static int route_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
r = sd_rtnl_message_get_errno(m);
if (r < 0 && r != -EEXIST)
- log_warning("%s: could not set route: %s",
- link->ifname, strerror(-r));
+ log_struct_link(LOG_WARNING, link,
+ "MESSAGE=%s: could not set route: %s",
+ link->ifname, strerror(-r),
+ "ERRNO=%d", -r,
+ NULL);
/* we might have received an old reply after moving back to SETTING_ADDRESSES,
* ignore it */
if (link->route_messages == 0 && link->state == LINK_STATE_SETTING_ROUTES) {
- log_debug("%s: routes set", link->ifname);
+ log_debug_link(link, "routes set");
link_enter_configured(link);
}
}
static int link_enter_set_routes(Link *link) {
- Route *route;
+ Route *rt;
int r;
assert(link);
link->state = LINK_STATE_SETTING_ROUTES;
- if (!link->network->static_routes && !link->dhcp_route)
+ if (!link->network->static_routes && !link->dhcp_lease &&
+ (!link->ipv4ll || ipv4ll_is_bound(link->ipv4ll) == false))
return link_enter_configured(link);
- log_debug("%s: setting routes", link->ifname);
+ log_debug_link(link, "setting routes");
- LIST_FOREACH(static_routes, route, link->network->static_routes) {
- r = route_configure(route, link, &route_handler);
+ LIST_FOREACH(static_routes, rt, link->network->static_routes) {
+ r = route_configure(rt, link, &route_handler);
if (r < 0) {
- log_warning("%s: could not set routes", link->ifname);
+ log_warning_link(link,
+ "could not set routes: %s", strerror(-r));
link_enter_failed(link);
return r;
}
link->route_messages ++;
}
- if (link->dhcp_route) {
- r = route_configure(link->dhcp_route, link, &route_handler);
+ if (link->ipv4ll && !link->dhcp_lease) {
+ _cleanup_route_free_ Route *route = NULL;
+ struct in_addr addr;
+
+ r = sd_ipv4ll_get_address(link->ipv4ll, &addr);
+ if (r < 0 && r != -ENOENT) {
+ log_warning_link(link, "IPV4LL error: no address: %s",
+ strerror(-r));
+ return r;
+ }
+
+ if (r != -ENOENT) {
+ r = route_new_dynamic(&route);
+ if (r < 0) {
+ log_error_link(link, "Could not allocate route: %s",
+ strerror(-r));
+ return r;
+ }
+
+ route->family = AF_INET;
+ route->scope = RT_SCOPE_LINK;
+ route->metrics = 99;
+
+ r = route_configure(route, link, &route_handler);
+ if (r < 0) {
+ log_warning_link(link,
+ "could not set routes: %s", strerror(-r));
+ link_enter_failed(link);
+ return r;
+ }
+
+ link->route_messages ++;
+ }
+ }
+
+ if (link->dhcp_lease) {
+ _cleanup_route_free_ Route *route = NULL;
+ _cleanup_route_free_ Route *route_gw = NULL;
+ struct in_addr gateway;
+
+ r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway);
if (r < 0) {
- log_warning("%s: could not set routes", link->ifname);
+ log_warning_link(link, "DHCP error: no router: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = route_new_dynamic(&route);
+ if (r < 0) {
+ log_error_link(link, "Could not allocate route: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = route_new_dynamic(&route_gw);
+ if (r < 0) {
+ log_error_link(link, "Could not allocate route: %s",
+ strerror(-r));
+ return r;
+ }
+
+ /* The dhcp netmask may mask out the gateway. Add an explicit
+ * route for the gw host so that we can route no matter the
+ * netmask or existing kernel route tables. */
+ route_gw->family = AF_INET;
+ route_gw->dst_addr.in = gateway;
+ route_gw->dst_prefixlen = 32;
+ route_gw->scope = RT_SCOPE_LINK;
+
+ r = route_configure(route_gw, link, &route_handler);
+ if (r < 0) {
+ log_warning_link(link,
+ "could not set host route: %s", strerror(-r));
+ return r;
+ }
+
+ link->route_messages ++;
+
+ route->family = AF_INET;
+ route->in_addr.in = gateway;
+
+ r = route_configure(route, link, &route_handler);
+ if (r < 0) {
+ log_warning_link(link,
+ "could not set routes: %s", strerror(-r));
link_enter_failed(link);
return r;
}
return 0;
}
+static int route_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ Link *link = userdata;
+ int r;
+
+ assert(m);
+ assert(link);
+ assert(link->ifname);
+
+ if (link->state == LINK_STATE_FAILED)
+ return 1;
+
+ r = sd_rtnl_message_get_errno(m);
+ if (r < 0 && r != -ENOENT)
+ log_struct_link(LOG_WARNING, link,
+ "MESSAGE=%s: could not drop route: %s",
+ link->ifname, strerror(-r),
+ "ERRNO=%d", -r,
+ NULL);
+
+ return 0;
+}
+
static int address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
Link *link = userdata;
int r;
r = sd_rtnl_message_get_errno(m);
if (r < 0 && r != -EEXIST)
- log_warning("%s: could not set address: %s",
- link->ifname, strerror(-r));
+ log_struct_link(LOG_WARNING, link,
+ "MESSAGE=%s: could not set address: %s",
+ link->ifname, strerror(-r),
+ "ERRNO=%d", -r,
+ NULL);
if (link->addr_messages == 0) {
- log_debug("%s: addresses set", link->ifname);
+ log_debug_link(link, "addresses set");
link_enter_set_routes(link);
}
}
static int link_enter_set_addresses(Link *link) {
- Address *address;
+ Address *ad;
int r;
assert(link);
link->state = LINK_STATE_SETTING_ADDRESSES;
- if (!link->network->static_addresses && !link->dhcp_address)
+ if (!link->network->static_addresses && !link->dhcp_lease &&
+ (!link->ipv4ll || ipv4ll_is_bound(link->ipv4ll) == false))
return link_enter_set_routes(link);
- log_debug("%s: setting addresses", link->ifname);
+ log_debug_link(link, "setting addresses");
- LIST_FOREACH(static_addresses, address, link->network->static_addresses) {
- r = address_configure(address, link, &address_handler);
+ LIST_FOREACH(static_addresses, ad, link->network->static_addresses) {
+ r = address_configure(ad, link, &address_handler);
if (r < 0) {
- log_warning("%s: could not set addresses", link->ifname);
+ log_warning_link(link,
+ "could not set addresses: %s", strerror(-r));
link_enter_failed(link);
return r;
}
link->addr_messages ++;
}
- if (link->dhcp_address) {
- r = address_configure(link->dhcp_address, link, &address_handler);
+ if (link->ipv4ll && !link->dhcp_lease) {
+ _cleanup_address_free_ Address *ll_addr = NULL;
+ struct in_addr addr;
+
+ r = sd_ipv4ll_get_address(link->ipv4ll, &addr);
+ if (r < 0 && r != -ENOENT) {
+ log_warning_link(link, "IPV4LL error: no address: %s",
+ strerror(-r));
+ return r;
+ }
+
+ if (r != -ENOENT) {
+ r = address_new_dynamic(&ll_addr);
+ if (r < 0) {
+ log_error_link(link, "Could not allocate address: %s", strerror(-r));
+ return r;
+ }
+
+ ll_addr->family = AF_INET;
+ ll_addr->in_addr.in = addr;
+ ll_addr->prefixlen = 16;
+ ll_addr->broadcast.s_addr = ll_addr->in_addr.in.s_addr | htonl(0xfffffffflu >> ll_addr->prefixlen);
+ ll_addr->scope = RT_SCOPE_LINK;
+
+ r = address_configure(ll_addr, link, &address_handler);
+ if (r < 0) {
+ log_warning_link(link,
+ "could not set addresses: %s", strerror(-r));
+ link_enter_failed(link);
+ return r;
+ }
+
+ link->addr_messages ++;
+ }
+ }
+
+ if (link->dhcp_lease) {
+ _cleanup_address_free_ Address *address = NULL;
+ struct in_addr addr;
+ struct in_addr netmask;
+ unsigned prefixlen;
+
+ r = sd_dhcp_lease_get_address(link->dhcp_lease, &addr);
+ if (r < 0) {
+ log_warning_link(link, "DHCP error: no address: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_dhcp_lease_get_netmask(link->dhcp_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 = address_new_dynamic(&address);
+ if (r < 0) {
+ log_error_link(link, "Could not allocate address: %s",
+ strerror(-r));
+ return r;
+ }
+
+ address->family = AF_INET;
+ address->in_addr.in = addr;
+ address->prefixlen = prefixlen;
+ address->broadcast.s_addr = addr.s_addr | ~netmask.s_addr;
+
+ r = address_configure(address, link, &address_handler);
if (r < 0) {
- log_warning("%s: could not set addresses", link->ifname);
+ log_warning_link(link,
+ "could not set addresses: %s", strerror(-r));
link_enter_failed(link);
return r;
}
return 0;
}
+static int address_update_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ Link *link = userdata;
+ int r;
+
+ assert(m);
+ assert(link);
+ assert(link->ifname);
+
+ if (link->state == LINK_STATE_FAILED)
+ return 1;
+
+ r = sd_rtnl_message_get_errno(m);
+ if (r < 0 && r != -ENOENT)
+ log_struct_link(LOG_WARNING, link,
+ "MESSAGE=%s: could not update address: %s",
+ link->ifname, strerror(-r),
+ "ERRNO=%d", -r,
+ NULL);
+
+ return 0;
+}
+
static int address_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
Link *link = userdata;
int r;
return 1;
r = sd_rtnl_message_get_errno(m);
- if (r < 0 && r != -EEXIST)
- log_warning("%s: could not drop address: %s",
- link->ifname, strerror(-r));
+ if (r < 0 && r != -ENOENT)
+ log_struct_link(LOG_WARNING, link,
+ "MESSAGE=%s: could not drop address: %s",
+ link->ifname, strerror(-r),
+ "ERRNO=%d", -r,
+ NULL);
+
+ return 0;
+}
+
+static int set_hostname_handler(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
+ int r;
+
+ r = sd_bus_message_get_errno(m);
+ if (r < 0)
+ log_warning("Could not set hostname: %s", strerror(-r));
return 1;
}
-static void dhcp_handler(sd_dhcp_client *client, int event, void *userdata) {
+static int set_hostname(sd_bus *bus, const char *hostname) {
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ int r = 0;
+
+ assert(hostname);
+
+ log_debug("Setting transient hostname: '%s'", hostname);
+
+ if (!bus) { /* TODO: replace by assert when we can rely on kdbus */
+ log_info("Not connected to system bus, ignoring transient hostname.");
+ return 0;
+ }
+
+ r = sd_bus_message_new_method_call(
+ bus,
+ &m,
+ "org.freedesktop.hostname1",
+ "/org/freedesktop/hostname1",
+ "org.freedesktop.hostname1",
+ "SetHostname");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(m, "sb", hostname, false);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_call_async(bus, m, set_hostname_handler, NULL, 0, NULL);
+ if (r < 0)
+ log_error("Could not set transient hostname: %s", strerror(-r));
+
+ return r;
+}
+
+static int set_mtu_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
Link *link = userdata;
- struct in_addr address;
- struct in_addr netmask;
- struct in_addr gateway;
- int prefixlen;
int r;
+ assert(m);
assert(link);
+ assert(link->ifname);
if (link->state == LINK_STATE_FAILED)
- return;
+ return 1;
- if (event < 0) {
- log_warning("%s: DHCP error: %s", link->ifname, strerror(-event));
- link_enter_failed(link);
- return;
+ r = sd_rtnl_message_get_errno(m);
+ if (r < 0)
+ log_struct_link(LOG_WARNING, link,
+ "MESSAGE=%s: could not set MTU: %s",
+ link->ifname, strerror(-r),
+ "ERRNO=%d", -r,
+ NULL);
+
+ return 1;
+}
+
+static int link_set_mtu(Link *link, uint32_t mtu) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+ int r;
+
+ assert(link);
+ assert(link->manager);
+ assert(link->manager->rtnl);
+
+ log_debug_link(link, "setting MTU: %" PRIu32, mtu);
+
+ r = sd_rtnl_message_new_link(link->manager->rtnl, &req,
+ RTM_SETLINK, link->ifindex);
+ if (r < 0) {
+ log_error_link(link, "Could not allocate RTM_SETLINK message");
+ return r;
}
- if (event == DHCP_EVENT_NO_LEASE)
- log_debug("%s: IP address in use.", link->ifname);
+ r = sd_rtnl_message_append_u32(req, IFLA_MTU, mtu);
+ if (r < 0) {
+ log_error_link(link, "Could not append MTU: %s", strerror(-r));
+ return r;
+ }
- if (event == DHCP_EVENT_IP_CHANGE || event == DHCP_EVENT_EXPIRED ||
- event == DHCP_EVENT_STOP) {
- if (link->dhcp_address) {
- address_drop(link->dhcp_address, link, address_drop_handler);
+ r = sd_rtnl_call_async(link->manager->rtnl, req, set_mtu_handler, link, 0, NULL);
+ if (r < 0) {
+ log_error_link(link,
+ "Could not send rtnetlink message: %s", strerror(-r));
+ return r;
+ }
- address_free(link->dhcp_address);
- link->dhcp_address = NULL;
+ 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) {
+ sd_dhcp_lease_get_address(link->dhcp_lease, &addr);
+ sd_dhcp_lease_get_netmask(link->dhcp_lease, &netmask);
+ sd_dhcp_lease_get_router(link->dhcp_lease, &gateway);
+ prefixlen = net_netmask_to_prefixlen(&netmask);
+
+ 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);
+ }
+
+ r = route_new_dynamic(&route);
+ if (r >= 0) {
+ route->family = AF_INET;
+ route->in_addr.in = gateway;
+
+ route_drop(route, link, &route_drop_handler);
+ }
+
+ address->family = AF_INET;
+ address->in_addr.in = addr;
+ address->prefixlen = prefixlen;
+
+ address_drop(address, link, &address_drop_handler);
+ }
+
+ 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;
- if (link->dhcp_route) {
- route_free(link->dhcp_route);
- link->dhcp_route = NULL;
+ r = sd_dhcp_lease_get_hostname(link->dhcp_lease, &hostname);
+ if (r >= 0 && hostname) {
+ r = set_hostname(link->manager->bus, "");
+ if (r < 0)
+ log_error("Failed to reset transient hostname");
}
}
- r = sd_dhcp_client_get_address(client, &address);
+ 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("%s: DHCP error: no address", link->ifname);
- link_enter_failed(link);
- return;
+ log_warning_link(link, "DHCP error: no lease: %s",
+ strerror(-r));
+ return r;
}
- r = sd_dhcp_client_get_netmask(client, &netmask);
+ r = sd_dhcp_lease_get_address(lease, &address);
if (r < 0) {
- log_warning("%s: DHCP error: no netmask", link->ifname);
- link_enter_failed(link);
- return;
+ log_warning_link(link, "DHCP error: no address: %s",
+ strerror(-r));
+ return r;
}
- prefixlen = sd_dhcp_client_prefixlen(&netmask);
- if (prefixlen < 0) {
- log_warning("%s: DHCP error: no prefixlen", link->ifname);
- link_enter_failed(link);
- return;
+ r = sd_dhcp_lease_get_netmask(lease, &netmask);
+ if (r < 0) {
+ log_warning_link(link, "DHCP error: no netmask: %s",
+ strerror(-r));
+ return r;
}
- r = sd_dhcp_client_get_router(client, &gateway);
+ prefixlen = net_netmask_to_prefixlen(&netmask);
+
+ r = sd_dhcp_lease_get_router(lease, &gateway);
if (r < 0) {
- log_warning("%s: DHCP error: no router", link->ifname);
- link_enter_failed(link);
+ log_warning_link(link, "DHCP error: no router: %s",
+ strerror(-r));
+ return r;
+ }
+
+ 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);
+
+ 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 = set_hostname(link->manager->bus, hostname);
+ if (r < 0)
+ log_error("Failed to set transient hostname "
+ "to '%s'", hostname);
+ }
+ }
+
+ link_enter_set_addresses(link);
+
+ return 0;
+}
+
+static void dhcp_handler(sd_dhcp_client *client, int event, void *userdata) {
+ Link *link = userdata;
+ int r = 0;
+
+ assert(link);
+ assert(link->network);
+ assert(link->manager);
+
+ if (link->state == LINK_STATE_FAILED)
return;
+
+ switch (event) {
+ case DHCP_EVENT_NO_LEASE:
+ log_debug_link(link, "IP address in use.");
+ break;
+ case DHCP_EVENT_EXPIRED:
+ case DHCP_EVENT_STOP:
+ case DHCP_EVENT_IP_CHANGE:
+ if (link->network->dhcp_critical) {
+ log_error_link(link, "DHCPv4 connection considered system critical, "
+ "ignoring request to reconfigure it.");
+ return;
+ }
+
+ if (link->dhcp_lease) {
+ r = dhcp_lease_lost(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return;
+ }
+ }
+
+ if (event == DHCP_EVENT_IP_CHANGE) {
+ r = dhcp_lease_acquired(client, link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return;
+ }
+ }
+
+ if (event == DHCP_EVENT_EXPIRED && link->network->ipv4ll) {
+ if (!sd_ipv4ll_is_running(link->ipv4ll))
+ r = sd_ipv4ll_start(link->ipv4ll);
+ else if (ipv4ll_is_bound(link->ipv4ll))
+ r = ipv4ll_address_update(link, false);
+ if (r < 0) {
+ link_enter_failed(link);
+ return;
+ }
+ }
+
+ break;
+ case DHCP_EVENT_IP_ACQUIRE:
+ r = dhcp_lease_acquired(client, link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return;
+ }
+ if (link->ipv4ll) {
+ if (ipv4ll_is_bound(link->ipv4ll))
+ r = ipv4ll_address_update(link, true);
+ else
+ r = sd_ipv4ll_stop(link->ipv4ll);
+ if (r < 0) {
+ link_enter_failed(link);
+ return;
+ }
+ }
+ break;
+ default:
+ if (event < 0)
+ log_warning_link(link, "DHCP error: %s", strerror(-event));
+ else
+ log_warning_link(link, "DHCP unknown event: %d", event);
+ break;
}
- if (event == DHCP_EVENT_IP_CHANGE || event == DHCP_EVENT_IP_ACQUIRE) {
- _cleanup_address_free_ Address *addr = NULL;
- _cleanup_route_free_ Route *rt = NULL;
+ return;
+}
+
+static int ipv4ll_address_update(Link *link, bool deprecate) {
+ int r;
+ struct in_addr addr;
+
+ assert(link);
- log_info("%s: received config over DHCPv4", link->ifname);
+ r = sd_ipv4ll_get_address(link->ipv4ll, &addr);
+ if (r >= 0) {
+ _cleanup_address_free_ Address *address = NULL;
- r = address_new_dynamic(&addr);
+ log_debug_link(link, "IPv4 link-local %s %u.%u.%u.%u",
+ deprecate ? "deprecate" : "approve",
+ ADDRESS_FMT_VAL(addr));
+
+ r = address_new_dynamic(&address);
if (r < 0) {
- log_error("Could not allocate address");
- link_enter_failed(link);
- return;
+ log_error_link(link, "Could not allocate address: %s", strerror(-r));
+ return r;
}
- addr->family = AF_INET;
- addr->in_addr.in = address;
- addr->prefixlen = prefixlen;
- addr->netmask = netmask;
+ address->family = AF_INET;
+ address->in_addr.in = addr;
+ address->prefixlen = 16;
+ address->scope = RT_SCOPE_LINK;
+ address->cinfo.ifa_prefered = deprecate ? 0 : CACHE_INFO_INFINITY_LIFE_TIME;
+ address->broadcast.s_addr = address->in_addr.in.s_addr | htonl(0xfffffffflu >> address->prefixlen);
+
+ address_update(address, link, &address_update_handler);
+ }
+
+ return 0;
+
+}
+
+static int ipv4ll_address_lost(Link *link) {
+ int r;
+ struct in_addr addr;
+
+ assert(link);
+
+ r = sd_ipv4ll_get_address(link->ipv4ll, &addr);
+ if (r >= 0) {
+ _cleanup_address_free_ Address *address = NULL;
+ _cleanup_route_free_ Route *route = NULL;
- r = route_new_dynamic(&rt);
+ log_debug_link(link, "IPv4 link-local release %u.%u.%u.%u",
+ ADDRESS_FMT_VAL(addr));
+
+ r = address_new_dynamic(&address);
if (r < 0) {
- log_error("Could not allocate route");
- link_enter_failed(link);
- return;
+ log_error_link(link, "Could not allocate address: %s", strerror(-r));
+ return r;
}
- rt->family = AF_INET;
- rt->in_addr.in = gateway;
+ address->family = AF_INET;
+ address->in_addr.in = addr;
+ address->prefixlen = 16;
+ address->scope = RT_SCOPE_LINK;
+
+ address_drop(address, link, &address_drop_handler);
+
+ r = route_new_dynamic(&route);
+ if (r < 0) {
+ log_error_link(link, "Could not allocate route: %s",
+ strerror(-r));
+ return r;
+ }
- link->dhcp_address = addr;
- link->dhcp_route = rt;
- addr = NULL;
- rt = NULL;
+ route->family = AF_INET;
+ route->scope = RT_SCOPE_LINK;
+ route->metrics = 99;
- link_enter_set_addresses(link);
+ route_drop(route, link, &route_drop_handler);
}
- return;
+ return 0;
+}
+
+static bool ipv4ll_is_bound(sd_ipv4ll *ll) {
+ int r;
+ struct in_addr addr;
+
+ assert(ll);
+
+ r = sd_ipv4ll_get_address(ll, &addr);
+ if (r < 0)
+ return false;
+ return true;
+}
+
+static int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) {
+ struct in_addr address;
+ int r;
+
+ assert(ll);
+ assert(link);
+
+ r = sd_ipv4ll_get_address(ll, &address);
+ if (r < 0)
+ return r;
+
+ log_struct_link(LOG_INFO, link,
+ "MESSAGE=%s: IPv4 link-local address %u.%u.%u.%u",
+ link->ifname,
+ ADDRESS_FMT_VAL(address),
+ NULL);
+
+ link_enter_set_addresses(link);
+
+ return 0;
+}
+
+static void ipv4ll_handler(sd_ipv4ll *ll, int event, void *userdata){
+ Link *link = userdata;
+ int r;
+
+ assert(link);
+ assert(link->network);
+ assert(link->manager);
+
+ switch(event) {
+ case IPV4LL_EVENT_STOP:
+ case IPV4LL_EVENT_CONFLICT:
+ r = ipv4ll_address_lost(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return;
+ }
+ break;
+ case IPV4LL_EVENT_BIND:
+ r = ipv4ll_address_claimed(ll, link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return;
+ }
+ break;
+ default:
+ if (event < 0)
+ log_warning_link(link, "IPv4 link-local error: %s", strerror(-event));
+ else
+ log_warning_link(link, "IPv4 link-local unknown event: %d", event);
+ break;
+ }
}
static int link_acquire_conf(Link *link) {
assert(link);
assert(link->network);
- assert(link->network->dhcp);
assert(link->manager);
assert(link->manager->event);
- if (!link->dhcp) {
- link->dhcp = sd_dhcp_client_new(link->manager->event);
- if (!link->dhcp)
- return -ENOMEM;
+ if (link->network->ipv4ll) {
+ assert(link->ipv4ll);
- r = sd_dhcp_client_set_index(link->dhcp, link->ifindex);
- if (r < 0)
- return r;
+ log_debug_link(link, "acquiring IPv4 link-local address");
- r = sd_dhcp_client_set_mac(link->dhcp, &link->mac);
+ r = sd_ipv4ll_start(link->ipv4ll);
if (r < 0)
return r;
+ }
+
+ if (link->network->dhcp) {
+ assert(link->dhcp_client);
- r = sd_dhcp_client_set_callback(link->dhcp, dhcp_handler, link);
+ log_debug_link(link, "acquiring DHCPv4 lease");
+
+ r = sd_dhcp_client_start(link->dhcp_client);
if (r < 0)
return r;
}
- r = sd_dhcp_client_start(link->dhcp);
- if (r < 0)
- return r;
-
return 0;
}
if (link->state == LINK_STATE_FAILED)
return 0;
- if (link->flags == flags) {
- log_debug("%s: link status unchanged: %#x", link->ifname, flags);
+ if (link->flags == flags)
return 0;
- }
- if ((link->flags & IFF_UP) != (flags & IFF_UP)) {
- if (flags & IFF_UP)
- log_info("%s: power on", link->ifname);
- else
- log_info("%s: power off", link->ifname);
- }
+ log_debug_link(link, "link status updated: %#.8x -> %#.8x",
+ link->flags, flags);
+
+ if ((link->flags & IFF_UP) != (flags & IFF_UP))
+ log_info_link(link,
+ "link is %s", flags & IFF_UP ? "up": "down");
if ((link->flags & IFF_LOWER_UP) != (flags & IFF_LOWER_UP)) {
if (flags & IFF_LOWER_UP) {
- log_info("%s: carrier on", link->ifname);
+ log_info_link(link, "carrier on");
- if (link->network->dhcp) {
+ if (link->network->dhcp || link->network->ipv4ll) {
r = link_acquire_conf(link);
if (r < 0) {
+ log_warning_link(link, "Could not acquire configuration: %s", strerror(-r));
link_enter_failed(link);
return r;
}
}
} else {
- log_info("%s: carrier off", link->ifname);
+ log_info_link(link, "carrier off");
if (link->network->dhcp) {
- r = sd_dhcp_client_stop(link->dhcp);
+ r = sd_dhcp_client_stop(link->dhcp_client);
+ if (r < 0) {
+ log_warning_link(link, "Could not stop DHCPv4 client: %s", strerror(-r));
+ link_enter_failed(link);
+ return r;
+ }
+ }
+
+ if (link->network->ipv4ll) {
+ r = sd_ipv4ll_stop(link->ipv4ll);
if (r < 0) {
+ log_warning_link(link, "Could not stop IPv4 link-local: %s", strerror(-r));
link_enter_failed(link);
return r;
}
}
}
- log_debug("%s: link status updated: %#x -> %#x", link->ifname, link->flags, flags);
-
link->flags = flags;
return 0;
return 1;
r = sd_rtnl_message_get_errno(m);
- if (r < 0) {
- log_warning("%s: could not bring up interface: %s",
- link->ifname, strerror(-r));
- link_enter_failed(link);
- }
-
- link_update_flags(link, link->flags | IFF_UP);
-
+ if (r >= 0)
+ link_update_flags(link, link->flags | IFF_UP);
+ else
+ log_struct_link(LOG_WARNING, link,
+ "MESSAGE=%s: could not bring up interface: %s",
+ link->ifname, strerror(-r),
+ "ERRNO=%d", -r,
+ NULL);
return 1;
}
static int link_up(Link *link) {
- _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
int r;
assert(link);
assert(link->manager);
assert(link->manager->rtnl);
- log_debug("%s: bringing up link", link->ifname);
+ log_debug_link(link, "bringing link up");
- r = sd_rtnl_message_link_new(RTM_SETLINK, link->ifindex, &req);
+ r = sd_rtnl_message_new_link(link->manager->rtnl, &req,
+ RTM_SETLINK, link->ifindex);
if (r < 0) {
- log_error("Could not allocate RTM_SETLINK message");
+ log_error_link(link, "Could not allocate RTM_SETLINK message");
return r;
}
- r = sd_rtnl_message_link_set_flags(req, IFF_UP);
+ r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP);
if (r < 0) {
- log_error("Could not set link flags");
+ log_error_link(link, "Could not set link flags: %s", strerror(-r));
return r;
}
r = sd_rtnl_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL);
if (r < 0) {
- log_error("Could not send rtnetlink message: %s", strerror(-r));
+ log_error_link(link,
+ "Could not send rtnetlink message: %s", strerror(-r));
return r;
}
return 0;
}
-static int link_bridge_joined(Link *link) {
+static int link_enslaved(Link *link) {
int r;
assert(link);
- assert(link->state == LINK_STATE_JOINING_BRIDGE);
+ assert(link->state == LINK_STATE_ENSLAVING);
assert(link->network);
r = link_up(link);
return r;
}
- if (!link->network->dhcp)
+ if (!link->network->dhcp && !link->network->ipv4ll)
return link_enter_set_addresses(link);
return 0;
}
-static int bridge_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+static int enslave_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
Link *link = userdata;
int r;
assert(link);
- assert(link->state == LINK_STATE_JOINING_BRIDGE || link->state == LINK_STATE_FAILED);
+ assert(link->state == LINK_STATE_ENSLAVING || link->state == LINK_STATE_FAILED);
assert(link->network);
+ link->enslaving --;
+
if (link->state == LINK_STATE_FAILED)
return 1;
r = sd_rtnl_message_get_errno(m);
if (r < 0) {
- log_warning("%s: could not join bridge '%s': %s",
- link->ifname, link->network->bridge->name, strerror(-r));
+ log_struct_link(LOG_ERR, link,
+ "MESSAGE=%s: could not enslave: %s",
+ link->ifname, strerror(-r),
+ "ERRNO=%d", -r,
+ NULL);
link_enter_failed(link);
return 1;
- } else
- log_debug("%s: joined bridge '%s'",
- link->ifname, link->network->bridge->name);
+ }
+
+ log_debug_link(link, "enslaved");
- link_bridge_joined(link);
+ if (link->enslaving == 0)
+ link_enslaved(link);
return 1;
}
-static int link_enter_join_bridge(Link *link) {
+static int link_enter_enslave(Link *link) {
+ NetDev *vlan, *macvlan;
+ Iterator i;
int r;
assert(link);
assert(link->network);
assert(link->state == _LINK_STATE_INVALID);
- link->state = LINK_STATE_JOINING_BRIDGE;
+ link->state = LINK_STATE_ENSLAVING;
- if (!link->network->bridge)
- return link_bridge_joined(link);
+ link_save(link);
- log_debug("%s: joining bridge", link->ifname);
+ if (!link->network->bridge && !link->network->bond &&
+ hashmap_isempty(link->network->vlans) &&
+ hashmap_isempty(link->network->macvlans))
+ return link_enslaved(link);
- r = bridge_join(link->network->bridge, link, &bridge_handler);
- if (r < 0) {
- log_warning("%s: could not join bridge '%s'", link->ifname,
- link->network->bridge->name);
- link_enter_failed(link);
- return r;
+ if (link->network->bridge) {
+ log_struct_link(LOG_DEBUG, link,
+ "MESSAGE=%s: enslaving by '%s'",
+ link->ifname, link->network->bridge->name,
+ NETDEV(link->network->bridge),
+ NULL);
+
+ r = netdev_enslave(link->network->bridge, link, &enslave_handler);
+ if (r < 0) {
+ log_struct_link(LOG_WARNING, link,
+ "MESSAGE=%s: could not enslave by '%s': %s",
+ link->ifname, link->network->bridge->name, strerror(-r),
+ NETDEV(link->network->bridge),
+ NULL);
+ link_enter_failed(link);
+ return r;
+ }
+
+ link->enslaving ++;
+ }
+
+ if (link->network->bond) {
+ log_struct_link(LOG_DEBUG, link,
+ "MESSAGE=%s: enslaving by '%s'",
+ link->ifname, link->network->bond->name,
+ NETDEV(link->network->bond),
+ NULL);
+
+ r = netdev_enslave(link->network->bond, link, &enslave_handler);
+ if (r < 0) {
+ log_struct_link(LOG_WARNING, link,
+ "MESSAGE=%s: could not enslave by '%s': %s",
+ link->ifname, link->network->bond->name, strerror(-r),
+ NETDEV(link->network->bond),
+ NULL);
+ link_enter_failed(link);
+ return r;
+ }
+
+ link->enslaving ++;
+ }
+
+ HASHMAP_FOREACH(vlan, link->network->vlans, i) {
+ log_struct_link(LOG_DEBUG, link,
+ "MESSAGE=%s: enslaving by '%s'",
+ link->ifname, vlan->name, NETDEV(vlan), NULL);
+
+ r = netdev_enslave(vlan, link, &enslave_handler);
+ if (r < 0) {
+ log_struct_link(LOG_WARNING, link,
+ "MESSAGE=%s: could not enslave by '%s': %s",
+ link->ifname, vlan->name, strerror(-r),
+ NETDEV(vlan), NULL);
+ link_enter_failed(link);
+ return r;
+ }
+
+ link->enslaving ++;
+ }
+
+ HASHMAP_FOREACH(macvlan, link->network->macvlans, i) {
+ log_struct_link(LOG_DEBUG, link,
+ "MESSAGE=%s: enslaving by '%s'",
+ link->ifname, macvlan->name, NETDEV(macvlan), NULL);
+
+ r = netdev_enslave(macvlan, link, &enslave_handler);
+ if (r < 0) {
+ log_struct_link(LOG_WARNING, link,
+ "MESSAGE=%s: could not enslave by '%s': %s",
+ link->ifname, macvlan->name, strerror(-r),
+ NETDEV(macvlan), NULL);
+ link_enter_failed(link);
+ return r;
+ }
+
+ link->enslaving ++;
}
return 0;
}
-static int link_get_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+static int link_getlink_handler(sd_rtnl *rtnl, sd_rtnl_message *m,
+ void *userdata) {
Link *link = userdata;
int r;
r = sd_rtnl_message_get_errno(m);
if (r < 0) {
- log_warning("%s: could not get state: %s",
- link->ifname, strerror(-r));
+ log_struct_link(LOG_ERR, link,
+ "MESSAGE=%s: could not get state: %s",
+ link->ifname, strerror(-r),
+ "ERRNO=%d", -r,
+ NULL);
link_enter_failed(link);
+ return 1;
}
- log_debug("%s: got link state", link->ifname);
-
link_update(link, m);
return 1;
}
-static int link_get(Link *link) {
- _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+static int link_getlink(Link *link) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
int r;
assert(link);
assert(link->manager);
assert(link->manager->rtnl);
- log_debug("%s: requesting link status", link->ifname);
+ log_debug_link(link, "requesting link status");
- r = sd_rtnl_message_link_new(RTM_GETLINK, link->ifindex, &req);
+ r = sd_rtnl_message_new_link(link->manager->rtnl, &req,
+ RTM_GETLINK, link->ifindex);
if (r < 0) {
- log_error("Could not allocate RTM_GETLINK message");
+ log_error_link(link, "Could not allocate RTM_GETLINK message");
return r;
}
- r = sd_rtnl_call_async(link->manager->rtnl, req, link_get_handler, link, 0, NULL);
+ r = sd_rtnl_call_async(link->manager->rtnl, req, link_getlink_handler,
+ link, 0, NULL);
if (r < 0) {
- log_error("Could not send rtnetlink message: %s", strerror(-r));
+ log_error_link(link,
+ "Could not send rtnetlink message: %s", strerror(-r));
return r;
}
return 0;
}
-int link_configure(Link *link) {
+static int link_configure(Link *link) {
int r;
assert(link);
- assert(link->network);
assert(link->state == _LINK_STATE_INVALID);
- r = link_get(link);
- if (r < 0) {
- link_enter_failed(link);
+ r = link_getlink(link);
+ if (r < 0)
return r;
+
+ return link_enter_enslave(link);
+}
+
+int link_add(Manager *m, struct udev_device *device, Link **ret) {
+ Link *link = NULL;
+ Network *network;
+ int r;
+
+ assert(m);
+ assert(device);
+
+ r = link_new(m, device, &link);
+ if (r < 0)
+ return r;
+
+ *ret = link;
+
+ r = network_get(m, device, &network);
+ if (r < 0)
+ return r == -ENOENT ? 0 : r;
+
+ r = network_apply(m, network, link);
+ if (r < 0)
+ return r;
+
+ if (link->network->ipv4ll) {
+ uint8_t seed[8];
+ r = sd_ipv4ll_new(&link->ipv4ll);
+ if (r < 0)
+ return r;
+
+ r = net_get_unique_predictable_data(link->udev_device, seed);
+ if (r >= 0) {
+ r = sd_ipv4ll_set_address_seed(link->ipv4ll, seed);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_ipv4ll_attach_event(link->ipv4ll, NULL, 0);
+ if (r < 0)
+ return r;
+
+ r = sd_ipv4ll_set_index(link->ipv4ll, link->ifindex);
+ if (r < 0)
+ return r;
+
+ r = sd_ipv4ll_set_callback(link->ipv4ll, ipv4ll_handler, link);
+ if (r < 0)
+ return r;
}
- return link_enter_join_bridge(link);
+ if (link->network->dhcp) {
+ r = sd_dhcp_client_new(&link->dhcp_client);
+ if (r < 0)
+ return r;
+
+ r = sd_dhcp_client_attach_event(link->dhcp_client, NULL, 0);
+ if (r < 0)
+ return r;
+
+ r = sd_dhcp_client_set_index(link->dhcp_client, link->ifindex);
+ if (r < 0)
+ return r;
+
+ r = sd_dhcp_client_set_callback(link->dhcp_client, dhcp_handler, link);
+ if (r < 0)
+ return r;
+
+ if (link->network->dhcp_mtu) {
+ r = sd_dhcp_client_set_request_option(link->dhcp_client, 26);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ r = link_configure(link);
+ if (r < 0)
+ return r;
+
+ return 0;
}
int link_update(Link *link, sd_rtnl_message *m) {
unsigned flags;
+ struct ether_addr mac;
int r;
assert(link);
+ assert(link->network);
assert(m);
if (link->state == LINK_STATE_FAILED)
return 0;
+ if (link->network->dhcp && link->network->dhcp_mtu &&
+ !link->original_mtu) {
+ r = sd_rtnl_message_read_u16(m, IFLA_MTU, &link->original_mtu);
+ if (r >= 0)
+ log_debug_link(link, "saved original MTU: %"
+ PRIu16, link->original_mtu);
+ }
+
+ r = sd_rtnl_message_read_ether_addr(m, IFLA_ADDRESS, &mac);
+ if (r < 0)
+ log_debug_link(link, "Could not get MAC address: %s", strerror(-r));
+ else {
+ if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, ETH_ALEN)) {
+
+ memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, ETH_ALEN);
+
+ log_debug_link(link, "MAC address: "
+ "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
+ mac.ether_addr_octet[0],
+ mac.ether_addr_octet[1],
+ mac.ether_addr_octet[2],
+ mac.ether_addr_octet[3],
+ mac.ether_addr_octet[4],
+ mac.ether_addr_octet[5]);
+
+ if (link->ipv4ll) {
+ r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac);
+ if (r < 0) {
+ log_warning_link(link, "Could not update MAC "
+ "address in IPv4LL client: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ if (link->dhcp_client) {
+ r = sd_dhcp_client_set_mac(link->dhcp_client, &link->mac);
+ if (r < 0) {
+ log_warning_link(link, "Could not update MAC "
+ "address in DHCP client: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+ }
+ }
+
r = sd_rtnl_message_link_get_flags(m, &flags);
if (r < 0) {
- log_warning("%s: could not get link flags", link->ifname);
+ log_warning_link(link, "Could not get link flags");
return r;
}
return link_update_flags(link, flags);
}
+
+int link_save(Link *link) {
+ _cleanup_free_ char *temp_path = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ int r;
+
+ assert(link);
+ assert(link->state_file);
+
+ r = fopen_temporary(link->state_file, &f, &temp_path);
+ if (r < 0)
+ goto finish;
+
+ fchmod(fileno(f), 0644);
+
+ fprintf(f,
+ "# This is private data. Do not parse.\n"
+ "STATE=%s\n",
+ link_state_to_string(link->state));
+
+ if (link->dhcp_lease) {
+ _cleanup_free_ char *lease_file = NULL;
+
+ r = asprintf(&lease_file, "/run/systemd/network/leases/%"PRIu64,
+ link->ifindex);
+ if (r < 0)
+ return -ENOMEM;
+
+ r = dhcp_lease_save(link->dhcp_lease, lease_file);
+ if (r < 0)
+ goto finish;
+
+ fprintf(f, "DHCP_LEASE=%s\n", lease_file);
+ }
+
+ fflush(f);
+
+ if (ferror(f) || rename(temp_path, link->state_file) < 0) {
+ r = -errno;
+ unlink(link->state_file);
+ unlink(temp_path);
+ }
+
+finish:
+ if (r < 0)
+ log_error("Failed to save link data %s: %s", link->state_file, strerror(-r));
+
+ return r;
+}
+
+static const char* const link_state_table[_LINK_STATE_MAX] = {
+ [LINK_STATE_ENSLAVING] = "configuring",
+ [LINK_STATE_SETTING_ADDRESSES] = "configuring",
+ [LINK_STATE_SETTING_ROUTES] = "configuring",
+ [LINK_STATE_CONFIGURED] = "configured",
+ [LINK_STATE_FAILED] = "failed",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState);
~ianmdlvl / elogind.git / blobdiff