| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #include <netinet/in.h> |
| #include <sys/socket.h> |
| #include <unistd.h> |
| #include <linux/if.h> |
| #include <linux/fib_rules.h> |
| #include <linux/nexthop.h> |
| |
| #include "sd-daemon.h" |
| #include "sd-netlink.h" |
| |
| #include "alloc-util.h" |
| #include "bus-log-control-api.h" |
| #include "bus-polkit.h" |
| #include "bus-util.h" |
| #include "conf-parser.h" |
| #include "def.h" |
| #include "device-private.h" |
| #include "device-util.h" |
| #include "dns-domain.h" |
| #include "fd-util.h" |
| #include "fileio.h" |
| #include "local-addresses.h" |
| #include "netlink-util.h" |
| #include "network-internal.h" |
| #include "networkd-address-pool.h" |
| #include "networkd-dhcp-server-bus.h" |
| #include "networkd-dhcp6.h" |
| #include "networkd-link-bus.h" |
| #include "networkd-manager-bus.h" |
| #include "networkd-manager.h" |
| #include "networkd-neighbor.h" |
| #include "networkd-network-bus.h" |
| #include "networkd-nexthop.h" |
| #include "networkd-routing-policy-rule.h" |
| #include "networkd-speed-meter.h" |
| #include "ordered-set.h" |
| #include "path-lookup.h" |
| #include "path-util.h" |
| #include "selinux-util.h" |
| #include "set.h" |
| #include "signal-util.h" |
| #include "stat-util.h" |
| #include "strv.h" |
| #include "sysctl-util.h" |
| #include "tmpfile-util.h" |
| #include "udev-util.h" |
| |
| /* use 128 MB for receive socket kernel queue. */ |
| #define RCVBUF_SIZE (128*1024*1024) |
| |
| static int manager_reset_all(Manager *m) { |
| Link *link; |
| int r; |
| |
| assert(m); |
| |
| HASHMAP_FOREACH(link, m->links) { |
| r = link_carrier_reset(link); |
| if (r < 0) |
| log_link_warning_errno(link, r, "Could not reset carrier: %m"); |
| } |
| |
| return 0; |
| } |
| |
| static int match_prepare_for_sleep(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { |
| Manager *m = userdata; |
| int b, r; |
| |
| assert(message); |
| assert(m); |
| |
| r = sd_bus_message_read(message, "b", &b); |
| if (r < 0) { |
| bus_log_parse_error(r); |
| return 0; |
| } |
| |
| if (b) |
| return 0; |
| |
| log_debug("Coming back from suspend, resetting all connections..."); |
| |
| (void) manager_reset_all(m); |
| |
| return 0; |
| } |
| |
| static int on_connected(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { |
| Manager *m = userdata; |
| |
| assert(message); |
| assert(m); |
| |
| /* Did we get a timezone or transient hostname from DHCP while D-Bus wasn't up yet? */ |
| if (m->dynamic_hostname) |
| (void) manager_set_hostname(m, m->dynamic_hostname); |
| if (m->dynamic_timezone) |
| (void) manager_set_timezone(m, m->dynamic_timezone); |
| if (m->links_requesting_uuid) |
| (void) manager_request_product_uuid(m, NULL); |
| |
| return 0; |
| } |
| |
| int manager_connect_bus(Manager *m) { |
| int r; |
| |
| assert(m); |
| |
| if (m->bus) |
| return 0; |
| |
| r = bus_open_system_watch_bind_with_description(&m->bus, "bus-api-network"); |
| if (r < 0) |
| return log_error_errno(r, "Failed to connect to bus: %m"); |
| |
| r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", manager_vtable, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to add manager object vtable: %m"); |
| |
| r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link", link_vtable, link_object_find, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to add link object vtable: %m"); |
| |
| r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/link", "org.freedesktop.network1.DHCPServer", dhcp_server_vtable, link_object_find, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to add link object vtable: %m"); |
| |
| r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/link", link_node_enumerator, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to add link enumerator: %m"); |
| |
| r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable, network_object_find, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to add network object vtable: %m"); |
| |
| r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/network", network_node_enumerator, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to add network enumerator: %m"); |
| |
| r = bus_log_control_api_register(m->bus); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.network1", 0, NULL, NULL); |
| if (r < 0) |
| return log_error_errno(r, "Failed to request name: %m"); |
| |
| r = sd_bus_attach_event(m->bus, m->event, 0); |
| if (r < 0) |
| return log_error_errno(r, "Failed to attach bus to event loop: %m"); |
| |
| r = sd_bus_match_signal_async( |
| m->bus, |
| NULL, |
| "org.freedesktop.DBus.Local", |
| NULL, |
| "org.freedesktop.DBus.Local", |
| "Connected", |
| on_connected, NULL, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to request match on Connected signal: %m"); |
| |
| r = sd_bus_match_signal_async( |
| m->bus, |
| NULL, |
| "org.freedesktop.login1", |
| "/org/freedesktop/login1", |
| "org.freedesktop.login1.Manager", |
| "PrepareForSleep", |
| match_prepare_for_sleep, NULL, m); |
| if (r < 0) |
| log_warning_errno(r, "Failed to request match for PrepareForSleep, ignoring: %m"); |
| |
| return 0; |
| } |
| |
| static int manager_udev_process_link(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
| Manager *m = userdata; |
| DeviceAction action; |
| Link *link = NULL; |
| int r, ifindex; |
| |
| assert(m); |
| assert(device); |
| |
| r = device_get_action(device, &action); |
| if (r < 0) { |
| log_device_debug_errno(device, r, "Failed to get udev action, ignoring device: %m"); |
| return 0; |
| } |
| |
| /* Ignore the "remove" uevent — let's remove a device only if rtnetlink says so. All other uevents |
| * are "positive" events in some form, i.e. inform us about a changed or new network interface, that |
| * still exists — and we are interested in that. */ |
| if (action == DEVICE_ACTION_REMOVE) |
| return 0; |
| |
| r = sd_device_get_ifindex(device, &ifindex); |
| if (r < 0) { |
| log_device_debug_errno(device, r, "Ignoring udev %s event for device without ifindex or with invalid ifindex: %m", |
| device_action_to_string(action)); |
| return 0; |
| } |
| |
| r = device_is_renaming(device); |
| if (r < 0) { |
| log_device_error_errno(device, r, "Failed to determine the device is renamed or not, ignoring '%s' uevent: %m", |
| device_action_to_string(action)); |
| return 0; |
| } |
| if (r > 0) { |
| log_device_debug(device, "Interface is under renaming, wait for the interface to be renamed."); |
| return 0; |
| } |
| |
| r = link_get(m, ifindex, &link); |
| if (r < 0) { |
| if (r != -ENODEV) |
| log_debug_errno(r, "Failed to get link from ifindex %i, ignoring: %m", ifindex); |
| return 0; |
| } |
| |
| (void) link_initialized(link, device); |
| |
| return 0; |
| } |
| |
| static int manager_connect_udev(Manager *m) { |
| int r; |
| |
| /* udev does not initialize devices inside containers, so we rely on them being already |
| * initialized before entering the container. */ |
| if (path_is_read_only_fs("/sys") > 0) |
| return 0; |
| |
| r = sd_device_monitor_new(&m->device_monitor); |
| if (r < 0) |
| return log_error_errno(r, "Failed to initialize device monitor: %m"); |
| |
| r = sd_device_monitor_set_receive_buffer_size(m->device_monitor, RCVBUF_SIZE); |
| if (r < 0) |
| log_warning_errno(r, "Failed to increase buffer size for device monitor, ignoring: %m"); |
| |
| r = sd_device_monitor_filter_add_match_subsystem_devtype(m->device_monitor, "net", NULL); |
| if (r < 0) |
| return log_error_errno(r, "Could not add device monitor filter: %m"); |
| |
| r = sd_device_monitor_attach_event(m->device_monitor, m->event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to attach event to device monitor: %m"); |
| |
| r = sd_device_monitor_start(m->device_monitor, manager_udev_process_link, m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to start device monitor: %m"); |
| |
| return 0; |
| } |
| |
| static int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, Manager *m) { |
| Link *link = NULL; |
| NetDev *netdev = NULL; |
| uint16_t type; |
| const char *name; |
| int r, ifindex; |
| |
| assert(rtnl); |
| assert(message); |
| assert(m); |
| |
| if (sd_netlink_message_is_error(message)) { |
| r = sd_netlink_message_get_errno(message); |
| if (r < 0) |
| log_message_warning_errno(message, r, "rtnl: Could not receive link message, ignoring"); |
| |
| return 0; |
| } |
| |
| r = sd_netlink_message_get_type(message, &type); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: Could not get message type, ignoring: %m"); |
| return 0; |
| } else if (!IN_SET(type, RTM_NEWLINK, RTM_DELLINK)) { |
| log_warning("rtnl: Received unexpected message type %u when processing link, ignoring.", type); |
| return 0; |
| } |
| |
| r = sd_rtnl_message_link_get_ifindex(message, &ifindex); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: Could not get ifindex from link message, ignoring: %m"); |
| return 0; |
| } else if (ifindex <= 0) { |
| log_warning("rtnl: received link message with invalid ifindex %d, ignoring.", ifindex); |
| return 0; |
| } |
| |
| r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name); |
| if (r < 0) { |
| log_warning_errno(r, "rtnl: Received link message without ifname, ignoring: %m"); |
| return 0; |
| } |
| |
| (void) link_get(m, ifindex, &link); |
| (void) netdev_get(m, name, &netdev); |
| |
| switch (type) { |
| case RTM_NEWLINK: |
| if (!link) { |
| /* link is new, so add it */ |
| r = link_add(m, message, &link); |
| if (r < 0) { |
| log_warning_errno(r, "Could not process new link message, ignoring: %m"); |
| return 0; |
| } |
| } |
| |
| if (netdev) { |
| /* netdev exists, so make sure the ifindex matches */ |
| r = netdev_set_ifindex(netdev, message); |
| if (r < 0) { |
| log_warning_errno(r, "Could not process new link message for netdev, ignoring: %m"); |
| return 0; |
| } |
| } |
| |
| r = link_update(link, message); |
| if (r < 0) { |
| log_warning_errno(r, "Could not process link message, ignoring: %m"); |
| return 0; |
| } |
| |
| break; |
| |
| case RTM_DELLINK: |
| link_drop(link); |
| netdev_drop(netdev); |
| |
| break; |
| |
| default: |
| assert_not_reached("Received link message with invalid RTNL message type."); |
| } |
| |
| return 1; |
| } |
| |
| static int systemd_netlink_fd(void) { |
| int n, fd, rtnl_fd = -EINVAL; |
| |
| n = sd_listen_fds(true); |
| if (n <= 0) |
| return -EINVAL; |
| |
| for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++) { |
| if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { |
| if (rtnl_fd >= 0) |
| return -EINVAL; |
| |
| rtnl_fd = fd; |
| } |
| } |
| |
| return rtnl_fd; |
| } |
| |
| static int manager_connect_genl(Manager *m) { |
| int r; |
| |
| assert(m); |
| |
| r = sd_genl_socket_open(&m->genl); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_inc_rcvbuf(m->genl, RCVBUF_SIZE); |
| if (r < 0) |
| log_warning_errno(r, "Failed to increase receive buffer size for general netlink socket, ignoring: %m"); |
| |
| r = sd_netlink_attach_event(m->genl, m->event, 0); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| static int manager_connect_rtnl(Manager *m) { |
| int fd, r; |
| |
| assert(m); |
| |
| fd = systemd_netlink_fd(); |
| if (fd < 0) |
| r = sd_netlink_open(&m->rtnl); |
| else |
| r = sd_netlink_open_fd(&m->rtnl, fd); |
| if (r < 0) |
| return r; |
| |
| /* Bump receiver buffer, but only if we are not called via socket activation, as in that |
| * case systemd sets the receive buffer size for us, and the value in the .socket unit |
| * should take full effect. */ |
| if (fd < 0) { |
| r = sd_netlink_inc_rcvbuf(m->rtnl, RCVBUF_SIZE); |
| if (r < 0) |
| log_warning_errno(r, "Failed to increase receive buffer size for rtnl socket, ignoring: %m"); |
| } |
| |
| r = sd_netlink_attach_event(m->rtnl, m->event, 0); |
| if (r < 0) |
| return r; |
| |
| r = netlink_add_match(m->rtnl, NULL, RTM_NEWLINK, &manager_rtnl_process_link, NULL, m, "network-rtnl_process_link"); |
| if (r < 0) |
| return r; |
| |
| r = netlink_add_match(m->rtnl, NULL, RTM_DELLINK, &manager_rtnl_process_link, NULL, m, "network-rtnl_process_link"); |
| if (r < 0) |
| return r; |
| |
| r = netlink_add_match(m->rtnl, NULL, RTM_NEWADDR, &manager_rtnl_process_address, NULL, m, "network-rtnl_process_address"); |
| if (r < 0) |
| return r; |
| |
| r = netlink_add_match(m->rtnl, NULL, RTM_DELADDR, &manager_rtnl_process_address, NULL, m, "network-rtnl_process_address"); |
| if (r < 0) |
| return r; |
| |
| r = netlink_add_match(m->rtnl, NULL, RTM_NEWNEIGH, &manager_rtnl_process_neighbor, NULL, m, "network-rtnl_process_neighbor"); |
| if (r < 0) |
| return r; |
| |
| r = netlink_add_match(m->rtnl, NULL, RTM_DELNEIGH, &manager_rtnl_process_neighbor, NULL, m, "network-rtnl_process_neighbor"); |
| if (r < 0) |
| return r; |
| |
| r = netlink_add_match(m->rtnl, NULL, RTM_NEWROUTE, &manager_rtnl_process_route, NULL, m, "network-rtnl_process_route"); |
| if (r < 0) |
| return r; |
| |
| r = netlink_add_match(m->rtnl, NULL, RTM_DELROUTE, &manager_rtnl_process_route, NULL, m, "network-rtnl_process_route"); |
| if (r < 0) |
| return r; |
| |
| r = netlink_add_match(m->rtnl, NULL, RTM_NEWRULE, &manager_rtnl_process_rule, NULL, m, "network-rtnl_process_rule"); |
| if (r < 0) |
| return r; |
| |
| r = netlink_add_match(m->rtnl, NULL, RTM_DELRULE, &manager_rtnl_process_rule, NULL, m, "network-rtnl_process_rule"); |
| if (r < 0) |
| return r; |
| |
| r = netlink_add_match(m->rtnl, NULL, RTM_NEWNEXTHOP, &manager_rtnl_process_nexthop, NULL, m, "network-rtnl_process_nexthop"); |
| if (r < 0) |
| return r; |
| |
| r = netlink_add_match(m->rtnl, NULL, RTM_DELNEXTHOP, &manager_rtnl_process_nexthop, NULL, m, "network-rtnl_process_nexthop"); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| static int ordered_set_put_dns_server(OrderedSet *s, int ifindex, struct in_addr_full *dns) { |
| const char *p; |
| int r; |
| |
| assert(s); |
| assert(dns); |
| |
| if (dns->ifindex != 0 && dns->ifindex != ifindex) |
| return 0; |
| |
| p = in_addr_full_to_string(dns); |
| if (!p) |
| return 0; |
| |
| r = ordered_set_put_strdup(s, p); |
| if (r == -EEXIST) |
| return 0; |
| |
| return r; |
| } |
| |
| static int ordered_set_put_dns_servers(OrderedSet *s, int ifindex, struct in_addr_full **dns, unsigned n) { |
| int r, c = 0; |
| unsigned i; |
| |
| assert(s); |
| assert(dns || n == 0); |
| |
| for (i = 0; i < n; i++) { |
| r = ordered_set_put_dns_server(s, ifindex, dns[i]); |
| if (r < 0) |
| return r; |
| |
| c += r; |
| } |
| |
| return c; |
| } |
| |
| static int ordered_set_put_in4_addr(OrderedSet *s, const struct in_addr *address) { |
| char *p; |
| int r; |
| |
| assert(s); |
| assert(address); |
| |
| r = in_addr_to_string(AF_INET, (const union in_addr_union*) address, &p); |
| if (r < 0) |
| return r; |
| |
| r = ordered_set_consume(s, p); |
| if (r == -EEXIST) |
| return 0; |
| |
| return r; |
| } |
| |
| static int ordered_set_put_in4_addrv(OrderedSet *s, |
| const struct in_addr *addresses, |
| size_t n, |
| bool (*predicate)(const struct in_addr *addr)) { |
| int r, c = 0; |
| size_t i; |
| |
| assert(s); |
| assert(n == 0 || addresses); |
| |
| for (i = 0; i < n; i++) { |
| if (predicate && !predicate(&addresses[i])) |
| continue; |
| r = ordered_set_put_in4_addr(s, addresses+i); |
| if (r < 0) |
| return r; |
| |
| c += r; |
| } |
| |
| return c; |
| } |
| |
| static int manager_save(Manager *m) { |
| _cleanup_ordered_set_free_free_ OrderedSet *dns = NULL, *ntp = NULL, *sip = NULL, *search_domains = NULL, *route_domains = NULL; |
| const char *operstate_str, *carrier_state_str, *address_state_str; |
| LinkOperationalState operstate = LINK_OPERSTATE_OFF; |
| LinkCarrierState carrier_state = LINK_CARRIER_STATE_OFF; |
| LinkAddressState address_state = LINK_ADDRESS_STATE_OFF; |
| _cleanup_free_ char *temp_path = NULL; |
| _cleanup_strv_free_ char **p = NULL; |
| _cleanup_fclose_ FILE *f = NULL; |
| Link *link; |
| int r; |
| |
| assert(m); |
| assert(m->state_file); |
| |
| /* We add all NTP and DNS server to a set, to filter out duplicates */ |
| dns = ordered_set_new(&string_hash_ops); |
| if (!dns) |
| return -ENOMEM; |
| |
| ntp = ordered_set_new(&string_hash_ops); |
| if (!ntp) |
| return -ENOMEM; |
| |
| sip = ordered_set_new(&string_hash_ops); |
| if (!sip) |
| return -ENOMEM; |
| |
| search_domains = ordered_set_new(&dns_name_hash_ops); |
| if (!search_domains) |
| return -ENOMEM; |
| |
| route_domains = ordered_set_new(&dns_name_hash_ops); |
| if (!route_domains) |
| return -ENOMEM; |
| |
| HASHMAP_FOREACH(link, m->links) { |
| const struct in_addr *addresses; |
| |
| if (link->flags & IFF_LOOPBACK) |
| continue; |
| |
| if (link->operstate > operstate) |
| operstate = link->operstate; |
| |
| if (link->carrier_state > carrier_state) |
| carrier_state = link->carrier_state; |
| |
| if (link->address_state > address_state) |
| address_state = link->address_state; |
| |
| if (!link->network) |
| continue; |
| |
| /* First add the static configured entries */ |
| if (link->n_dns != (unsigned) -1) |
| r = ordered_set_put_dns_servers(dns, link->ifindex, link->dns, link->n_dns); |
| else |
| r = ordered_set_put_dns_servers(dns, link->ifindex, link->network->dns, link->network->n_dns); |
| if (r < 0) |
| return r; |
| |
| r = ordered_set_put_strdupv(ntp, link->ntp ?: link->network->ntp); |
| if (r < 0) |
| return r; |
| |
| r = ordered_set_put_string_set(search_domains, link->search_domains ?: link->network->search_domains); |
| if (r < 0) |
| return r; |
| |
| r = ordered_set_put_string_set(route_domains, link->route_domains ?: link->network->route_domains); |
| if (r < 0) |
| return r; |
| |
| if (!link->dhcp_lease) |
| continue; |
| |
| /* Secondly, add the entries acquired via DHCP */ |
| if (link->network->dhcp_use_dns) { |
| r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); |
| if (r > 0) { |
| r = ordered_set_put_in4_addrv(dns, addresses, r, in4_addr_is_non_local); |
| if (r < 0) |
| return r; |
| } else if (r < 0 && r != -ENODATA) |
| return r; |
| } |
| |
| if (link->network->dhcp_use_ntp) { |
| r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); |
| if (r > 0) { |
| r = ordered_set_put_in4_addrv(ntp, addresses, r, in4_addr_is_non_local); |
| if (r < 0) |
| return r; |
| } else if (r < 0 && r != -ENODATA) |
| return r; |
| } |
| |
| if (link->network->dhcp_use_sip) { |
| r = sd_dhcp_lease_get_sip(link->dhcp_lease, &addresses); |
| if (r > 0) { |
| r = ordered_set_put_in4_addrv(sip, addresses, r, in4_addr_is_non_local); |
| if (r < 0) |
| return r; |
| } else if (r < 0 && r != -ENODATA) |
| return r; |
| } |
| |
| if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) { |
| const char *domainname; |
| char **domains = NULL; |
| |
| OrderedSet *target_domains = (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) ? search_domains : route_domains; |
| r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); |
| if (r >= 0) { |
| r = ordered_set_put_strdup(target_domains, domainname); |
| if (r < 0) |
| return r; |
| } else if (r != -ENODATA) |
| return r; |
| |
| r = sd_dhcp_lease_get_search_domains(link->dhcp_lease, &domains); |
| if (r >= 0) { |
| r = ordered_set_put_strdupv(target_domains, domains); |
| if (r < 0) |
| return r; |
| } else if (r != -ENODATA) |
| return r; |
| } |
| } |
| |
| if (carrier_state >= LINK_CARRIER_STATE_ENSLAVED) |
| carrier_state = LINK_CARRIER_STATE_CARRIER; |
| |
| operstate_str = link_operstate_to_string(operstate); |
| assert(operstate_str); |
| |
| carrier_state_str = link_carrier_state_to_string(carrier_state); |
| assert(carrier_state_str); |
| |
| address_state_str = link_address_state_to_string(address_state); |
| assert(address_state_str); |
| |
| r = fopen_temporary(m->state_file, &f, &temp_path); |
| if (r < 0) |
| return r; |
| |
| (void) fchmod(fileno(f), 0644); |
| |
| fprintf(f, |
| "# This is private data. Do not parse.\n" |
| "OPER_STATE=%s\n" |
| "CARRIER_STATE=%s\n" |
| "ADDRESS_STATE=%s\n", |
| operstate_str, carrier_state_str, address_state_str); |
| |
| ordered_set_print(f, "DNS=", dns); |
| ordered_set_print(f, "NTP=", ntp); |
| ordered_set_print(f, "SIP=", sip); |
| ordered_set_print(f, "DOMAINS=", search_domains); |
| ordered_set_print(f, "ROUTE_DOMAINS=", route_domains); |
| |
| r = routing_policy_serialize_rules(m->rules, f); |
| if (r < 0) |
| goto fail; |
| |
| r = fflush_and_check(f); |
| if (r < 0) |
| goto fail; |
| |
| if (rename(temp_path, m->state_file) < 0) { |
| r = -errno; |
| goto fail; |
| } |
| |
| if (m->operational_state != operstate) { |
| m->operational_state = operstate; |
| if (strv_extend(&p, "OperationalState") < 0) |
| log_oom(); |
| } |
| |
| if (m->carrier_state != carrier_state) { |
| m->carrier_state = carrier_state; |
| if (strv_extend(&p, "CarrierState") < 0) |
| log_oom(); |
| } |
| |
| if (m->address_state != address_state) { |
| m->address_state = address_state; |
| if (strv_extend(&p, "AddressState") < 0) |
| log_oom(); |
| } |
| |
| if (p) { |
| r = manager_send_changed_strv(m, p); |
| if (r < 0) |
| log_error_errno(r, "Could not emit changed properties: %m"); |
| } |
| |
| m->dirty = false; |
| |
| return 0; |
| |
| fail: |
| (void) unlink(m->state_file); |
| (void) unlink(temp_path); |
| |
| return log_error_errno(r, "Failed to save network state to %s: %m", m->state_file); |
| } |
| |
| static int manager_dirty_handler(sd_event_source *s, void *userdata) { |
| Manager *m = userdata; |
| Link *link; |
| |
| assert(m); |
| |
| if (m->dirty) |
| manager_save(m); |
| |
| SET_FOREACH(link, m->dirty_links) |
| (void) link_save_and_clean(link); |
| |
| return 1; |
| } |
| |
| static int signal_terminate_callback(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { |
| Manager *m = userdata; |
| |
| assert(m); |
| m->restarting = false; |
| |
| log_debug("Terminate operation initiated."); |
| |
| return sd_event_exit(sd_event_source_get_event(s), 0); |
| } |
| |
| static int signal_restart_callback(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { |
| Manager *m = userdata; |
| |
| assert(m); |
| m->restarting = true; |
| |
| log_debug("Restart operation initiated."); |
| |
| return sd_event_exit(sd_event_source_get_event(s), 0); |
| } |
| |
| int manager_new(Manager **ret) { |
| _cleanup_(manager_freep) Manager *m = NULL; |
| int r; |
| |
| m = new(Manager, 1); |
| if (!m) |
| return -ENOMEM; |
| |
| *m = (Manager) { |
| .speed_meter_interval_usec = SPEED_METER_DEFAULT_TIME_INTERVAL, |
| .manage_foreign_routes = true, |
| .ethtool_fd = -1, |
| }; |
| |
| m->state_file = strdup("/run/systemd/netif/state"); |
| if (!m->state_file) |
| return -ENOMEM; |
| |
| r = sd_event_default(&m->event); |
| if (r < 0) |
| return r; |
| |
| assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, SIGUSR2, -1) >= 0); |
| |
| (void) sd_event_set_watchdog(m->event, true); |
| (void) sd_event_add_signal(m->event, NULL, SIGTERM, signal_terminate_callback, m); |
| (void) sd_event_add_signal(m->event, NULL, SIGINT, signal_terminate_callback, m); |
| (void) sd_event_add_signal(m->event, NULL, SIGUSR2, signal_restart_callback, m); |
| |
| r = sd_event_add_post(m->event, NULL, manager_dirty_handler, m); |
| if (r < 0) |
| return r; |
| |
| r = manager_connect_rtnl(m); |
| if (r < 0) |
| return r; |
| |
| r = manager_connect_genl(m); |
| if (r < 0) |
| return r; |
| |
| r = manager_connect_udev(m); |
| if (r < 0) |
| return r; |
| |
| r = sd_resolve_default(&m->resolve); |
| if (r < 0) |
| return r; |
| |
| r = sd_resolve_attach_event(m->resolve, m->event, 0); |
| if (r < 0) |
| return r; |
| |
| r = address_pool_setup_default(m); |
| if (r < 0) |
| return r; |
| |
| m->duid.type = DUID_TYPE_EN; |
| |
| (void) routing_policy_load_rules(m->state_file, &m->rules_saved); |
| |
| *ret = TAKE_PTR(m); |
| |
| return 0; |
| } |
| |
| void manager_free(Manager *m) { |
| Link *link; |
| |
| if (!m) |
| return; |
| |
| free(m->state_file); |
| |
| HASHMAP_FOREACH(link, m->links) |
| (void) link_stop_engines(link, true); |
| |
| m->dhcp6_prefixes = hashmap_free_with_destructor(m->dhcp6_prefixes, dhcp6_pd_free); |
| m->dhcp6_pd_prefixes = set_free_with_destructor(m->dhcp6_pd_prefixes, dhcp6_pd_free); |
| |
| m->dirty_links = set_free_with_destructor(m->dirty_links, link_unref); |
| m->links_requesting_uuid = set_free_with_destructor(m->links_requesting_uuid, link_unref); |
| m->links = hashmap_free_with_destructor(m->links, link_unref); |
| |
| m->duids_requesting_uuid = set_free(m->duids_requesting_uuid); |
| m->networks = ordered_hashmap_free_with_destructor(m->networks, network_unref); |
| |
| m->netdevs = hashmap_free_with_destructor(m->netdevs, netdev_unref); |
| |
| ordered_set_free_free(m->address_pools); |
| |
| /* routing_policy_rule_free() access m->rules and m->rules_foreign. |
| * So, it is necessary to set NULL after the sets are freed. */ |
| m->rules = set_free(m->rules); |
| m->rules_foreign = set_free(m->rules_foreign); |
| set_free(m->rules_saved); |
| |
| m->routes = set_free(m->routes); |
| m->routes_foreign = set_free(m->routes_foreign); |
| |
| sd_netlink_unref(m->rtnl); |
| sd_netlink_unref(m->genl); |
| sd_resolve_unref(m->resolve); |
| |
| sd_event_source_unref(m->speed_meter_event_source); |
| sd_event_unref(m->event); |
| |
| sd_device_monitor_unref(m->device_monitor); |
| |
| bus_verify_polkit_async_registry_free(m->polkit_registry); |
| sd_bus_flush_close_unref(m->bus); |
| |
| free(m->dynamic_timezone); |
| free(m->dynamic_hostname); |
| |
| safe_close(m->ethtool_fd); |
| |
| free(m); |
| } |
| |
| int manager_start(Manager *m) { |
| Link *link; |
| int r; |
| |
| assert(m); |
| |
| r = manager_start_speed_meter(m); |
| if (r < 0) |
| return log_error_errno(r, "Failed to initialize speed meter: %m"); |
| |
| /* The dirty handler will deal with future serialization, but the first one |
| must be done explicitly. */ |
| |
| manager_save(m); |
| |
| HASHMAP_FOREACH(link, m->links) |
| (void) link_save(link); |
| |
| return 0; |
| } |
| |
| int manager_load_config(Manager *m) { |
| int r; |
| |
| /* update timestamp */ |
| paths_check_timestamp(NETWORK_DIRS, &m->network_dirs_ts_usec, true); |
| |
| r = netdev_load(m, false); |
| if (r < 0) |
| return r; |
| |
| r = network_load(m, &m->networks); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| bool manager_should_reload(Manager *m) { |
| return paths_check_timestamp(NETWORK_DIRS, &m->network_dirs_ts_usec, false); |
| } |
| |
| static int manager_enumerate_internal( |
| Manager *m, |
| sd_netlink_message *req, |
| int (*process)(sd_netlink *, sd_netlink_message *, Manager *), |
| const char *name) { |
| |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *reply = NULL; |
| int r; |
| |
| assert(m); |
| assert(m->rtnl); |
| assert(req); |
| assert(process); |
| |
| r = sd_netlink_message_request_dump(req, true); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_call(m->rtnl, req, 0, &reply); |
| if (r < 0) { |
| if (name && (r == -EOPNOTSUPP || (r == -EINVAL && mac_selinux_enforcing()))) { |
| log_debug_errno(r, "%s are not supported by the kernel. Ignoring.", name); |
| return 0; |
| } |
| |
| return r; |
| } |
| |
| for (sd_netlink_message *reply_one = reply; reply_one; reply_one = sd_netlink_message_next(reply_one)) { |
| int k; |
| |
| m->enumerating = true; |
| |
| k = process(m->rtnl, reply_one, m); |
| if (k < 0 && r >= 0) |
| r = k; |
| |
| m->enumerating = false; |
| } |
| |
| return r; |
| } |
| |
| static int manager_enumerate_links(Manager *m) { |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
| int r; |
| |
| assert(m); |
| assert(m->rtnl); |
| |
| r = sd_rtnl_message_new_link(m->rtnl, &req, RTM_GETLINK, 0); |
| if (r < 0) |
| return r; |
| |
| return manager_enumerate_internal(m, req, manager_rtnl_process_link, NULL); |
| } |
| |
| static int manager_enumerate_addresses(Manager *m) { |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
| int r; |
| |
| assert(m); |
| assert(m->rtnl); |
| |
| r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, 0); |
| if (r < 0) |
| return r; |
| |
| return manager_enumerate_internal(m, req, manager_rtnl_process_address, NULL); |
| } |
| |
| static int manager_enumerate_neighbors(Manager *m) { |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
| int r; |
| |
| assert(m); |
| assert(m->rtnl); |
| |
| r = sd_rtnl_message_new_neigh(m->rtnl, &req, RTM_GETNEIGH, 0, AF_UNSPEC); |
| if (r < 0) |
| return r; |
| |
| return manager_enumerate_internal(m, req, manager_rtnl_process_neighbor, NULL); |
| } |
| |
| static int manager_enumerate_routes(Manager *m) { |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
| int r; |
| |
| assert(m); |
| assert(m->rtnl); |
| |
| if (!m->manage_foreign_routes) |
| return 0; |
| |
| r = sd_rtnl_message_new_route(m->rtnl, &req, RTM_GETROUTE, 0, 0); |
| if (r < 0) |
| return r; |
| |
| return manager_enumerate_internal(m, req, manager_rtnl_process_route, NULL); |
| } |
| |
| static int manager_enumerate_rules(Manager *m) { |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
| int r; |
| |
| assert(m); |
| assert(m->rtnl); |
| |
| r = sd_rtnl_message_new_routing_policy_rule(m->rtnl, &req, RTM_GETRULE, 0); |
| if (r < 0) |
| return r; |
| |
| return manager_enumerate_internal(m, req, manager_rtnl_process_rule, "Routing policy rules"); |
| } |
| |
| static int manager_enumerate_nexthop(Manager *m) { |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
| int r; |
| |
| assert(m); |
| assert(m->rtnl); |
| |
| r = sd_rtnl_message_new_nexthop(m->rtnl, &req, RTM_GETNEXTHOP, 0, 0); |
| if (r < 0) |
| return r; |
| |
| return manager_enumerate_internal(m, req, manager_rtnl_process_nexthop, "Nexthop rules"); |
| } |
| |
| int manager_enumerate(Manager *m) { |
| int r; |
| |
| r = manager_enumerate_links(m); |
| if (r < 0) |
| return log_error_errno(r, "Could not enumerate links: %m"); |
| |
| r = manager_enumerate_addresses(m); |
| if (r < 0) |
| return log_error_errno(r, "Could not enumerate addresses: %m"); |
| |
| r = manager_enumerate_neighbors(m); |
| if (r < 0) |
| return log_error_errno(r, "Could not enumerate neighbors: %m"); |
| |
| r = manager_enumerate_routes(m); |
| if (r < 0) |
| return log_error_errno(r, "Could not enumerate routes: %m"); |
| |
| r = manager_enumerate_rules(m); |
| if (r < 0) |
| return log_error_errno(r, "Could not enumerate routing policy rules: %m"); |
| |
| r = manager_enumerate_nexthop(m); |
| if (r < 0) |
| return log_error_errno(r, "Could not enumerate nexthop rules: %m"); |
| |
| return 0; |
| } |
| |
| Link* manager_find_uplink(Manager *m, Link *exclude) { |
| _cleanup_free_ struct local_address *gateways = NULL; |
| int n, i; |
| |
| assert(m); |
| |
| /* Looks for a suitable "uplink", via black magic: an |
| * interface that is up and where the default route with the |
| * highest priority points to. */ |
| |
| n = local_gateways(m->rtnl, 0, AF_UNSPEC, &gateways); |
| if (n < 0) { |
| log_warning_errno(n, "Failed to determine list of default gateways: %m"); |
| return NULL; |
| } |
| |
| for (i = 0; i < n; i++) { |
| Link *link; |
| |
| link = hashmap_get(m->links, INT_TO_PTR(gateways[i].ifindex)); |
| if (!link) { |
| log_debug("Weird, found a gateway for a link we don't know. Ignoring."); |
| continue; |
| } |
| |
| if (link == exclude) |
| continue; |
| |
| if (link->operstate < LINK_OPERSTATE_ROUTABLE) |
| continue; |
| |
| return link; |
| } |
| |
| return NULL; |
| } |
| |
| void manager_dirty(Manager *manager) { |
| assert(manager); |
| |
| /* the serialized state in /run is no longer up-to-date */ |
| manager->dirty = true; |
| } |
| |
| static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
| _unused_ Manager *manager = userdata; |
| const sd_bus_error *e; |
| |
| assert(m); |
| assert(manager); |
| |
| e = sd_bus_message_get_error(m); |
| if (e) |
| log_warning_errno(sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message); |
| |
| return 1; |
| } |
| |
| int manager_set_hostname(Manager *m, const char *hostname) { |
| int r; |
| |
| log_debug("Setting transient hostname: '%s'", strna(hostname)); |
| |
| if (free_and_strdup(&m->dynamic_hostname, hostname) < 0) |
| return log_oom(); |
| |
| if (!m->bus || sd_bus_is_ready(m->bus) <= 0) { |
| log_debug("Not connected to system bus, setting hostname later."); |
| return 0; |
| } |
| |
| r = sd_bus_call_method_async( |
| m->bus, |
| NULL, |
| "org.freedesktop.hostname1", |
| "/org/freedesktop/hostname1", |
| "org.freedesktop.hostname1", |
| "SetHostname", |
| set_hostname_handler, |
| m, |
| "sb", |
| hostname, |
| false); |
| |
| if (r < 0) |
| return log_error_errno(r, "Could not set transient hostname: %m"); |
| |
| return 0; |
| } |
| |
| static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
| _unused_ Manager *manager = userdata; |
| const sd_bus_error *e; |
| |
| assert(m); |
| assert(manager); |
| |
| e = sd_bus_message_get_error(m); |
| if (e) |
| log_warning_errno(sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message); |
| |
| return 1; |
| } |
| |
| int manager_set_timezone(Manager *m, const char *tz) { |
| int r; |
| |
| assert(m); |
| assert(tz); |
| |
| log_debug("Setting system timezone: '%s'", tz); |
| if (free_and_strdup(&m->dynamic_timezone, tz) < 0) |
| return log_oom(); |
| |
| if (!m->bus || sd_bus_is_ready(m->bus) <= 0) { |
| log_debug("Not connected to system bus, setting timezone later."); |
| return 0; |
| } |
| |
| r = sd_bus_call_method_async( |
| m->bus, |
| NULL, |
| "org.freedesktop.timedate1", |
| "/org/freedesktop/timedate1", |
| "org.freedesktop.timedate1", |
| "SetTimezone", |
| set_timezone_handler, |
| m, |
| "sb", |
| tz, |
| false); |
| if (r < 0) |
| return log_error_errno(r, "Could not set timezone: %m"); |
| |
| return 0; |
| } |