1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 #include <netinet/in.h>
4 #include <sys/socket.h>
7 #include <linux/fib_rules.h>
8 #include <linux/nexthop.h>
10 #include "sd-daemon.h"
11 #include "sd-netlink.h"
13 #include "alloc-util.h"
15 #include "conf-parser.h"
17 #include "device-private.h"
18 #include "device-util.h"
19 #include "dns-domain.h"
22 #include "local-addresses.h"
23 #include "netlink-util.h"
24 #include "network-internal.h"
25 #include "networkd-dhcp6.h"
26 #include "networkd-link-bus.h"
27 #include "networkd-manager-bus.h"
28 #include "networkd-manager.h"
29 #include "networkd-network-bus.h"
30 #include "networkd-speed-meter.h"
31 #include "ordered-set.h"
32 #include "path-util.h"
34 #include "signal-util.h"
36 #include "sysctl-util.h"
37 #include "tmpfile-util.h"
38 #include "udev-util.h"
41 /* use 128 MB for receive socket kernel queue. */
42 #define RCVBUF_SIZE (128*1024*1024)
44 static int log_message_warning_errno(sd_netlink_message
*m
, int err
, const char *msg
) {
45 const char *err_msg
= NULL
;
47 (void) sd_netlink_message_read_string(m
, NLMSGERR_ATTR_MSG
, &err_msg
);
48 return log_warning_errno(err
, "%s: %s%s%m", msg
, strempty(err_msg
), err_msg
? " " : "");
51 static int setup_default_address_pool(Manager
*m
) {
57 /* Add in the well-known private address ranges. */
59 r
= address_pool_new_from_string(m
, &p
, AF_INET6
, "fd00::", 8);
63 r
= address_pool_new_from_string(m
, &p
, AF_INET
, "10.0.0.0", 8);
67 r
= address_pool_new_from_string(m
, &p
, AF_INET
, "172.16.0.0", 12);
71 r
= address_pool_new_from_string(m
, &p
, AF_INET
, "192.168.0.0", 16);
78 static int manager_reset_all(Manager
*m
) {
85 HASHMAP_FOREACH(link
, m
->links
, i
) {
86 r
= link_carrier_reset(link
);
88 log_link_warning_errno(link
, r
, "Could not reset carrier: %m");
94 static int match_prepare_for_sleep(sd_bus_message
*message
, void *userdata
, sd_bus_error
*ret_error
) {
95 Manager
*m
= userdata
;
101 r
= sd_bus_message_read(message
, "b", &b
);
103 log_debug_errno(r
, "Failed to parse PrepareForSleep signal: %m");
110 log_debug("Coming back from suspend, resetting all connections...");
112 (void) manager_reset_all(m
);
117 static int on_connected(sd_bus_message
*message
, void *userdata
, sd_bus_error
*ret_error
) {
118 Manager
*m
= userdata
;
123 /* Did we get a timezone or transient hostname from DHCP while D-Bus wasn't up yet? */
124 if (m
->dynamic_hostname
)
125 (void) manager_set_hostname(m
, m
->dynamic_hostname
);
126 if (m
->dynamic_timezone
)
127 (void) manager_set_timezone(m
, m
->dynamic_timezone
);
128 if (m
->links_requesting_uuid
)
129 (void) manager_request_product_uuid(m
, NULL
);
134 int manager_connect_bus(Manager
*m
) {
142 r
= bus_open_system_watch_bind_with_description(&m
->bus
, "bus-api-network");
144 return log_error_errno(r
, "Failed to connect to bus: %m");
146 r
= sd_bus_add_object_vtable(m
->bus
, NULL
, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", manager_vtable
, m
);
148 return log_error_errno(r
, "Failed to add manager object vtable: %m");
150 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link", link_vtable
, link_object_find
, m
);
152 return log_error_errno(r
, "Failed to add link object vtable: %m");
154 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/network1/link", link_node_enumerator
, m
);
156 return log_error_errno(r
, "Failed to add link enumerator: %m");
158 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable
, network_object_find
, m
);
160 return log_error_errno(r
, "Failed to add network object vtable: %m");
162 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/network1/network", network_node_enumerator
, m
);
164 return log_error_errno(r
, "Failed to add network enumerator: %m");
166 r
= sd_bus_request_name_async(m
->bus
, NULL
, "org.freedesktop.network1", 0, NULL
, NULL
);
168 return log_error_errno(r
, "Failed to request name: %m");
170 r
= sd_bus_attach_event(m
->bus
, m
->event
, 0);
172 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
174 r
= sd_bus_match_signal_async(
177 "org.freedesktop.DBus.Local",
179 "org.freedesktop.DBus.Local",
181 on_connected
, NULL
, m
);
183 return log_error_errno(r
, "Failed to request match on Connected signal: %m");
185 r
= sd_bus_match_signal_async(
188 "org.freedesktop.login1",
189 "/org/freedesktop/login1",
190 "org.freedesktop.login1.Manager",
192 match_prepare_for_sleep
, NULL
, m
);
194 log_warning_errno(r
, "Failed to request match for PrepareForSleep, ignoring: %m");
199 static int manager_udev_process_link(sd_device_monitor
*monitor
, sd_device
*device
, void *userdata
) {
200 Manager
*m
= userdata
;
208 r
= device_get_action(device
, &action
);
210 log_device_debug_errno(device
, r
, "Failed to get udev action, ignoring device: %m");
214 if (!IN_SET(action
, DEVICE_ACTION_ADD
, DEVICE_ACTION_CHANGE
, DEVICE_ACTION_MOVE
)) {
215 log_device_debug(device
, "Ignoring udev %s event for device.", device_action_to_string(action
));
219 r
= sd_device_get_ifindex(device
, &ifindex
);
221 log_device_debug_errno(device
, r
, "Ignoring udev ADD event for device without ifindex or with invalid ifindex: %m");
225 r
= device_is_renaming(device
);
227 log_device_error_errno(device
, r
, "Failed to determine the device is renamed or not, ignoring '%s' uevent: %m",
228 device_action_to_string(action
));
232 log_device_debug(device
, "Interface is under renaming, wait for the interface to be renamed: %m");
236 r
= link_get(m
, ifindex
, &link
);
239 log_debug_errno(r
, "Failed to get link from ifindex %i, ignoring: %m", ifindex
);
243 (void) link_initialized(link
, device
);
248 static int manager_connect_udev(Manager
*m
) {
251 /* udev does not initialize devices inside containers,
252 * so we rely on them being already initialized before
253 * entering the container */
254 if (detect_container() > 0)
257 r
= sd_device_monitor_new(&m
->device_monitor
);
259 return log_error_errno(r
, "Failed to initialize device monitor: %m");
261 r
= sd_device_monitor_filter_add_match_subsystem_devtype(m
->device_monitor
, "net", NULL
);
263 return log_error_errno(r
, "Could not add device monitor filter: %m");
265 r
= sd_device_monitor_attach_event(m
->device_monitor
, m
->event
);
267 return log_error_errno(r
, "Failed to attach event to device monitor: %m");
269 r
= sd_device_monitor_start(m
->device_monitor
, manager_udev_process_link
, m
);
271 return log_error_errno(r
, "Failed to start device monitor: %m");
276 int manager_rtnl_process_route(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
277 _cleanup_(route_freep
) Route
*tmp
= NULL
;
279 Manager
*m
= userdata
;
290 if (sd_netlink_message_is_error(message
)) {
291 r
= sd_netlink_message_get_errno(message
);
293 log_message_warning_errno(message
, r
, "rtnl: failed to receive route message, ignoring");
298 r
= sd_netlink_message_get_type(message
, &type
);
300 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
302 } else if (!IN_SET(type
, RTM_NEWROUTE
, RTM_DELROUTE
)) {
303 log_warning("rtnl: received unexpected message type %u when processing route, ignoring.", type
);
307 r
= sd_netlink_message_read_u32(message
, RTA_OIF
, &ifindex
);
309 log_debug("rtnl: received route message without ifindex, ignoring");
312 log_warning_errno(r
, "rtnl: could not get ifindex from route message, ignoring: %m");
314 } else if (ifindex
<= 0) {
315 log_warning("rtnl: received route message with invalid ifindex %d, ignoring.", ifindex
);
319 r
= link_get(m
, ifindex
, &link
);
320 if (r
< 0 || !link
) {
321 /* when enumerating we might be out of sync, but we will
322 * get the route again, so just ignore it */
324 log_warning("rtnl: received route message for link (%d) we do not know about, ignoring", ifindex
);
332 r
= sd_rtnl_message_route_get_family(message
, &tmp
->family
);
334 log_link_warning(link
, "rtnl: received route message without family, ignoring");
336 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
337 log_link_debug(link
, "rtnl: received route message with invalid family '%i', ignoring", tmp
->family
);
341 r
= sd_rtnl_message_route_get_protocol(message
, &tmp
->protocol
);
343 log_warning_errno(r
, "rtnl: received route message without route protocol: %m");
347 switch (tmp
->family
) {
349 r
= sd_netlink_message_read_in_addr(message
, RTA_DST
, &tmp
->dst
.in
);
350 if (r
< 0 && r
!= -ENODATA
) {
351 log_link_warning_errno(link
, r
, "rtnl: received route message without valid destination, ignoring: %m");
355 r
= sd_netlink_message_read_in_addr(message
, RTA_GATEWAY
, &tmp
->gw
.in
);
356 if (r
< 0 && r
!= -ENODATA
) {
357 log_link_warning_errno(link
, r
, "rtnl: received route message without valid gateway, ignoring: %m");
361 r
= sd_netlink_message_read_in_addr(message
, RTA_SRC
, &tmp
->src
.in
);
362 if (r
< 0 && r
!= -ENODATA
) {
363 log_link_warning_errno(link
, r
, "rtnl: received route message without valid source, ignoring: %m");
367 r
= sd_netlink_message_read_in_addr(message
, RTA_PREFSRC
, &tmp
->prefsrc
.in
);
368 if (r
< 0 && r
!= -ENODATA
) {
369 log_link_warning_errno(link
, r
, "rtnl: received route message without valid preferred source, ignoring: %m");
376 r
= sd_netlink_message_read_in6_addr(message
, RTA_DST
, &tmp
->dst
.in6
);
377 if (r
< 0 && r
!= -ENODATA
) {
378 log_link_warning_errno(link
, r
, "rtnl: received route message without valid destination, ignoring: %m");
382 r
= sd_netlink_message_read_in6_addr(message
, RTA_GATEWAY
, &tmp
->gw
.in6
);
383 if (r
< 0 && r
!= -ENODATA
) {
384 log_link_warning_errno(link
, r
, "rtnl: received route message without valid gateway, ignoring: %m");
388 r
= sd_netlink_message_read_in6_addr(message
, RTA_SRC
, &tmp
->src
.in6
);
389 if (r
< 0 && r
!= -ENODATA
) {
390 log_link_warning_errno(link
, r
, "rtnl: received route message without valid source, ignoring: %m");
394 r
= sd_netlink_message_read_in6_addr(message
, RTA_PREFSRC
, &tmp
->prefsrc
.in6
);
395 if (r
< 0 && r
!= -ENODATA
) {
396 log_link_warning_errno(link
, r
, "rtnl: received route message without valid preferred source, ignoring: %m");
403 assert_not_reached("Received route message with unsupported address family");
407 r
= sd_rtnl_message_route_get_dst_prefixlen(message
, &tmp
->dst_prefixlen
);
409 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid destination prefixlen, ignoring: %m");
413 r
= sd_rtnl_message_route_get_src_prefixlen(message
, &tmp
->src_prefixlen
);
415 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid source prefixlen, ignoring: %m");
419 r
= sd_rtnl_message_route_get_scope(message
, &tmp
->scope
);
421 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid scope, ignoring: %m");
425 r
= sd_rtnl_message_route_get_tos(message
, &tmp
->tos
);
427 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid tos, ignoring: %m");
431 r
= sd_rtnl_message_route_get_type(message
, &tmp
->type
);
433 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid type, ignoring: %m");
437 r
= sd_rtnl_message_route_get_table(message
, &table
);
439 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid table, ignoring: %m");
444 r
= sd_netlink_message_read_u32(message
, RTA_PRIORITY
, &tmp
->priority
);
445 if (r
< 0 && r
!= -ENODATA
) {
446 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid priority, ignoring: %m");
450 r
= sd_netlink_message_enter_container(message
, RTA_METRICS
);
451 if (r
< 0 && r
!= -ENODATA
) {
452 log_link_error_errno(link
, r
, "rtnl: Could not enter RTA_METRICS container: %m");
456 r
= sd_netlink_message_read_u32(message
, RTAX_INITCWND
, &tmp
->initcwnd
);
457 if (r
< 0 && r
!= -ENODATA
) {
458 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid initcwnd, ignoring: %m");
462 r
= sd_netlink_message_read_u32(message
, RTAX_INITRWND
, &tmp
->initrwnd
);
463 if (r
< 0 && r
!= -ENODATA
) {
464 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid initrwnd, ignoring: %m");
468 r
= sd_netlink_message_exit_container(message
);
470 log_link_error_errno(link
, r
, "rtnl: Could not exit from RTA_METRICS container: %m");
475 (void) route_get(link
, tmp
, &route
);
478 _cleanup_free_
char *buf_dst
= NULL
, *buf_dst_prefixlen
= NULL
,
479 *buf_src
= NULL
, *buf_gw
= NULL
, *buf_prefsrc
= NULL
;
480 char buf_scope
[ROUTE_SCOPE_STR_MAX
], buf_table
[ROUTE_TABLE_STR_MAX
],
481 buf_protocol
[ROUTE_PROTOCOL_STR_MAX
];
483 if (!in_addr_is_null(tmp
->family
, &tmp
->dst
)) {
484 (void) in_addr_to_string(tmp
->family
, &tmp
->dst
, &buf_dst
);
485 (void) asprintf(&buf_dst_prefixlen
, "/%u", tmp
->dst_prefixlen
);
487 if (!in_addr_is_null(tmp
->family
, &tmp
->src
))
488 (void) in_addr_to_string(tmp
->family
, &tmp
->src
, &buf_src
);
489 if (!in_addr_is_null(tmp
->family
, &tmp
->gw
))
490 (void) in_addr_to_string(tmp
->family
, &tmp
->gw
, &buf_gw
);
491 if (!in_addr_is_null(tmp
->family
, &tmp
->prefsrc
))
492 (void) in_addr_to_string(tmp
->family
, &tmp
->prefsrc
, &buf_prefsrc
);
495 "%s route: dst: %s%s, src: %s, gw: %s, prefsrc: %s, scope: %s, table: %s, proto: %s, type: %s",
496 type
== RTM_DELROUTE
? "Forgetting" : route
? "Received remembered" : "Remembering",
497 strna(buf_dst
), strempty(buf_dst_prefixlen
),
498 strna(buf_src
), strna(buf_gw
), strna(buf_prefsrc
),
499 format_route_scope(tmp
->scope
, buf_scope
, sizeof buf_scope
),
500 format_route_table(tmp
->table
, buf_table
, sizeof buf_table
),
501 format_route_protocol(tmp
->protocol
, buf_protocol
, sizeof buf_protocol
),
502 strna(route_type_to_string(tmp
->type
)));
508 /* A route appeared that we did not request */
509 r
= route_add_foreign(link
, tmp
, &route
);
511 log_link_warning_errno(link
, r
, "Failed to remember foreign route, ignoring: %m");
523 assert_not_reached("Received route message with invalid RTNL message type");
529 static int manager_rtnl_process_neighbor_lladdr(sd_netlink_message
*message
, union lladdr_union
*lladdr
, size_t *size
, char **str
) {
539 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->ip
.in6
), &lladdr
->ip
.in6
);
541 *size
= sizeof(lladdr
->ip
.in6
);
542 if (in_addr_to_string(AF_INET6
, &lladdr
->ip
, str
) < 0)
543 log_warning_errno(r
, "Could not print lower address: %m");
547 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->mac
), &lladdr
->mac
);
549 *size
= sizeof(lladdr
->mac
);
550 *str
= new(char, ETHER_ADDR_TO_STRING_MAX
);
555 ether_addr_to_string(&lladdr
->mac
, *str
);
559 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->ip
.in
), &lladdr
->ip
.in
);
561 *size
= sizeof(lladdr
->ip
.in
);
562 if (in_addr_to_string(AF_INET
, &lladdr
->ip
, str
) < 0)
563 log_warning_errno(r
, "Could not print lower address: %m");
570 int manager_rtnl_process_neighbor(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
571 Manager
*m
= userdata
;
573 Neighbor
*neighbor
= NULL
;
574 int ifindex
, family
, r
;
575 uint16_t type
, state
;
576 union in_addr_union in_addr
= IN_ADDR_NULL
;
577 _cleanup_free_
char *addr_str
= NULL
;
578 union lladdr_union lladdr
;
579 size_t lladdr_size
= 0;
580 _cleanup_free_
char *lladdr_str
= NULL
;
586 if (sd_netlink_message_is_error(message
)) {
587 r
= sd_netlink_message_get_errno(message
);
589 log_message_warning_errno(message
, r
, "rtnl: failed to receive neighbor message, ignoring");
594 r
= sd_netlink_message_get_type(message
, &type
);
596 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
598 } else if (!IN_SET(type
, RTM_NEWNEIGH
, RTM_DELNEIGH
)) {
599 log_warning("rtnl: received unexpected message type %u when processing neighbor, ignoring.", type
);
603 r
= sd_rtnl_message_neigh_get_state(message
, &state
);
605 log_link_warning_errno(link
, r
, "rtnl: received neighbor message with invalid state, ignoring: %m");
607 } else if (!FLAGS_SET(state
, NUD_PERMANENT
)) {
608 log_debug("rtnl: received non-static neighbor, ignoring.");
612 r
= sd_rtnl_message_neigh_get_ifindex(message
, &ifindex
);
614 log_warning_errno(r
, "rtnl: could not get ifindex from message, ignoring: %m");
616 } else if (ifindex
<= 0) {
617 log_warning("rtnl: received neighbor message with invalid ifindex %d, ignoring.", ifindex
);
621 r
= link_get(m
, ifindex
, &link
);
622 if (r
< 0 || !link
) {
623 /* when enumerating we might be out of sync, but we will get the neighbor again, so just
626 log_warning("rtnl: received neighbor for link '%d' we don't know about, ignoring.", ifindex
);
630 r
= sd_rtnl_message_neigh_get_family(message
, &family
);
632 log_link_warning(link
, "rtnl: received neighbor message without family, ignoring.");
634 } else if (!IN_SET(family
, AF_INET
, AF_INET6
)) {
635 log_link_debug(link
, "rtnl: received neighbor message with invalid family '%i', ignoring.", family
);
641 r
= sd_netlink_message_read_in_addr(message
, NDA_DST
, &in_addr
.in
);
643 log_link_warning_errno(link
, r
, "rtnl: received neighbor message without valid address, ignoring: %m");
650 r
= sd_netlink_message_read_in6_addr(message
, NDA_DST
, &in_addr
.in6
);
652 log_link_warning_errno(link
, r
, "rtnl: received neighbor message without valid address, ignoring: %m");
659 assert_not_reached("Received unsupported address family");
662 if (in_addr_to_string(family
, &in_addr
, &addr_str
) < 0)
663 log_link_warning_errno(link
, r
, "Could not print address: %m");
665 r
= manager_rtnl_process_neighbor_lladdr(message
, &lladdr
, &lladdr_size
, &lladdr_str
);
667 log_link_warning_errno(link
, r
, "rtnl: received neighbor message with invalid lladdr, ignoring: %m");
671 (void) neighbor_get(link
, family
, &in_addr
, &lladdr
, lladdr_size
, &neighbor
);
676 log_link_debug(link
, "Remembering neighbor: %s->%s",
677 strnull(addr_str
), strnull(lladdr_str
));
679 /* A neighbor appeared that we did not request */
680 r
= neighbor_add_foreign(link
, family
, &in_addr
, &lladdr
, lladdr_size
, &neighbor
);
682 log_link_warning_errno(link
, r
, "Failed to remember foreign neighbor %s->%s, ignoring: %m",
683 strnull(addr_str
), strnull(lladdr_str
));
686 log_link_debug(link
, "Remembering foreign neighbor: %s->%s",
687 strnull(addr_str
), strnull(lladdr_str
));
694 log_link_debug(link
, "Forgetting neighbor: %s->%s",
695 strnull(addr_str
), strnull(lladdr_str
));
696 (void) neighbor_free(neighbor
);
698 log_link_debug(link
, "Kernel removed a neighbor we don't remember: %s->%s, ignoring.",
699 strnull(addr_str
), strnull(lladdr_str
));
704 assert_not_reached("Received invalid RTNL message type");
710 int manager_rtnl_process_address(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
711 _cleanup_free_
char *buf
= NULL
;
712 Manager
*m
= userdata
;
715 unsigned char flags
, prefixlen
, scope
;
716 union in_addr_union in_addr
= IN_ADDR_NULL
;
717 struct ifa_cacheinfo cinfo
;
718 Address
*address
= NULL
;
719 char valid_buf
[FORMAT_TIMESPAN_MAX
];
720 const char *valid_str
= NULL
;
721 int ifindex
, family
, r
;
727 if (sd_netlink_message_is_error(message
)) {
728 r
= sd_netlink_message_get_errno(message
);
730 log_message_warning_errno(message
, r
, "rtnl: failed to receive address message, ignoring");
735 r
= sd_netlink_message_get_type(message
, &type
);
737 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
739 } else if (!IN_SET(type
, RTM_NEWADDR
, RTM_DELADDR
)) {
740 log_warning("rtnl: received unexpected message type %u when processing address, ignoring.", type
);
744 r
= sd_rtnl_message_addr_get_ifindex(message
, &ifindex
);
746 log_warning_errno(r
, "rtnl: could not get ifindex from message, ignoring: %m");
748 } else if (ifindex
<= 0) {
749 log_warning("rtnl: received address message with invalid ifindex %d, ignoring.", ifindex
);
753 r
= link_get(m
, ifindex
, &link
);
754 if (r
< 0 || !link
) {
755 /* when enumerating we might be out of sync, but we will get the address again, so just
758 log_warning("rtnl: received address for link '%d' we don't know about, ignoring.", ifindex
);
762 r
= sd_rtnl_message_addr_get_family(message
, &family
);
764 log_link_warning(link
, "rtnl: received address message without family, ignoring.");
766 } else if (!IN_SET(family
, AF_INET
, AF_INET6
)) {
767 log_link_debug(link
, "rtnl: received address message with invalid family '%i', ignoring.", family
);
771 r
= sd_rtnl_message_addr_get_prefixlen(message
, &prefixlen
);
773 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid prefixlen, ignoring: %m");
777 r
= sd_rtnl_message_addr_get_scope(message
, &scope
);
779 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid scope, ignoring: %m");
783 r
= sd_rtnl_message_addr_get_flags(message
, &flags
);
785 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid flags, ignoring: %m");
791 r
= sd_netlink_message_read_in_addr(message
, IFA_LOCAL
, &in_addr
.in
);
793 log_link_warning_errno(link
, r
, "rtnl: received address message without valid address, ignoring: %m");
800 r
= sd_netlink_message_read_in6_addr(message
, IFA_ADDRESS
, &in_addr
.in6
);
802 log_link_warning_errno(link
, r
, "rtnl: received address message without valid address, ignoring: %m");
809 assert_not_reached("Received unsupported address family");
812 r
= in_addr_to_string(family
, &in_addr
, &buf
);
814 log_link_warning_errno(link
, r
, "Could not print address: %m");
816 r
= sd_netlink_message_read_cache_info(message
, IFA_CACHEINFO
, &cinfo
);
817 if (r
< 0 && r
!= -ENODATA
) {
818 log_link_warning_errno(link
, r
, "rtnl: cannot get IFA_CACHEINFO attribute, ignoring: %m");
820 } else if (r
>= 0 && cinfo
.ifa_valid
!= CACHE_INFO_INFINITY_LIFE_TIME
)
821 valid_str
= format_timespan(valid_buf
, FORMAT_TIMESPAN_MAX
,
822 cinfo
.ifa_valid
* USEC_PER_SEC
,
825 (void) address_get(link
, family
, &in_addr
, prefixlen
, &address
);
830 log_link_debug(link
, "Remembering updated address: %s/%u (valid %s%s)",
831 strnull(buf
), prefixlen
,
832 valid_str
? "for " : "forever", strempty(valid_str
));
834 /* An address appeared that we did not request */
835 r
= address_add_foreign(link
, family
, &in_addr
, prefixlen
, &address
);
837 log_link_warning_errno(link
, r
, "Failed to remember foreign address %s/%u, ignoring: %m",
838 strnull(buf
), prefixlen
);
841 log_link_debug(link
, "Remembering foreign address: %s/%u (valid %s%s)",
842 strnull(buf
), prefixlen
,
843 valid_str
? "for " : "forever", strempty(valid_str
));
846 /* address_update() logs internally, so we don't need to. */
847 (void) address_update(address
, flags
, scope
, &cinfo
);
853 log_link_debug(link
, "Forgetting address: %s/%u (valid %s%s)",
854 strnull(buf
), prefixlen
,
855 valid_str
? "for " : "forever", strempty(valid_str
));
856 (void) address_drop(address
);
858 log_link_debug(link
, "Kernel removed an address we don't remember: %s/%u (valid %s%s), ignoring.",
859 strnull(buf
), prefixlen
,
860 valid_str
? "for " : "forever", strempty(valid_str
));
865 assert_not_reached("Received invalid RTNL message type");
871 static int manager_rtnl_process_link(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
872 Manager
*m
= userdata
;
874 NetDev
*netdev
= NULL
;
883 if (sd_netlink_message_is_error(message
)) {
884 r
= sd_netlink_message_get_errno(message
);
886 log_message_warning_errno(message
, r
, "rtnl: Could not receive link message, ignoring");
891 r
= sd_netlink_message_get_type(message
, &type
);
893 log_warning_errno(r
, "rtnl: Could not get message type, ignoring: %m");
895 } else if (!IN_SET(type
, RTM_NEWLINK
, RTM_DELLINK
)) {
896 log_warning("rtnl: Received unexpected message type %u when processing link, ignoring.", type
);
900 r
= sd_rtnl_message_link_get_ifindex(message
, &ifindex
);
902 log_warning_errno(r
, "rtnl: Could not get ifindex from link message, ignoring: %m");
904 } else if (ifindex
<= 0) {
905 log_warning("rtnl: received link message with invalid ifindex %d, ignoring.", ifindex
);
909 r
= sd_netlink_message_read_string(message
, IFLA_IFNAME
, &name
);
911 log_warning_errno(r
, "rtnl: Received link message without ifname, ignoring: %m");
915 (void) link_get(m
, ifindex
, &link
);
916 (void) netdev_get(m
, name
, &netdev
);
921 /* link is new, so add it */
922 r
= link_add(m
, message
, &link
);
924 log_warning_errno(r
, "Could not process new link message, ignoring: %m");
930 /* netdev exists, so make sure the ifindex matches */
931 r
= netdev_set_ifindex(netdev
, message
);
933 log_warning_errno(r
, "Could not process new link message for netdev, ignoring: %m");
938 r
= link_update(link
, message
);
940 log_warning_errno(r
, "Could not process link message, ignoring: %m");
953 assert_not_reached("Received link message with invalid RTNL message type.");
959 int manager_rtnl_process_rule(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
960 _cleanup_(routing_policy_rule_freep
) RoutingPolicyRule
*tmp
= NULL
;
961 _cleanup_free_
char *from
= NULL
, *to
= NULL
;
962 RoutingPolicyRule
*rule
= NULL
;
963 const char *iif
= NULL
, *oif
= NULL
;
964 Manager
*m
= userdata
;
973 if (sd_netlink_message_is_error(message
)) {
974 r
= sd_netlink_message_get_errno(message
);
976 log_message_warning_errno(message
, r
, "rtnl: failed to receive rule message, ignoring");
981 r
= sd_netlink_message_get_type(message
, &type
);
983 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
985 } else if (!IN_SET(type
, RTM_NEWRULE
, RTM_DELRULE
)) {
986 log_warning("rtnl: received unexpected message type %u when processing rule, ignoring.", type
);
990 r
= routing_policy_rule_new(&tmp
);
996 r
= sd_rtnl_message_get_family(message
, &tmp
->family
);
998 log_warning_errno(r
, "rtnl: could not get rule family, ignoring: %m");
1000 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
1001 log_debug("rtnl: received rule message with invalid family %d, ignoring.", tmp
->family
);
1005 switch (tmp
->family
) {
1007 r
= sd_netlink_message_read_in_addr(message
, FRA_SRC
, &tmp
->from
.in
);
1008 if (r
< 0 && r
!= -ENODATA
) {
1009 log_warning_errno(r
, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
1011 } else if (r
>= 0) {
1012 r
= sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message
, &tmp
->from_prefixlen
);
1014 log_warning_errno(r
, "rtnl: received rule message without valid source prefix length, ignoring: %m");
1019 r
= sd_netlink_message_read_in_addr(message
, FRA_DST
, &tmp
->to
.in
);
1020 if (r
< 0 && r
!= -ENODATA
) {
1021 log_warning_errno(r
, "rtnl: could not get FRA_DST attribute, ignoring: %m");
1023 } else if (r
>= 0) {
1024 r
= sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message
, &tmp
->to_prefixlen
);
1026 log_warning_errno(r
, "rtnl: received rule message without valid destination prefix length, ignoring: %m");
1034 r
= sd_netlink_message_read_in6_addr(message
, FRA_SRC
, &tmp
->from
.in6
);
1035 if (r
< 0 && r
!= -ENODATA
) {
1036 log_warning_errno(r
, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
1038 } else if (r
>= 0) {
1039 r
= sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message
, &tmp
->from_prefixlen
);
1041 log_warning_errno(r
, "rtnl: received rule message without valid source prefix length, ignoring: %m");
1046 r
= sd_netlink_message_read_in6_addr(message
, FRA_DST
, &tmp
->to
.in6
);
1047 if (r
< 0 && r
!= -ENODATA
) {
1048 log_warning_errno(r
, "rtnl: could not get FRA_DST attribute, ignoring: %m");
1050 } else if (r
>= 0) {
1051 r
= sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message
, &tmp
->to_prefixlen
);
1053 log_warning_errno(r
, "rtnl: received rule message without valid destination prefix length, ignoring: %m");
1061 assert_not_reached("Received rule message with unsupported address family");
1064 if (tmp
->from_prefixlen
== 0 && tmp
->to_prefixlen
== 0)
1067 r
= sd_rtnl_message_routing_policy_rule_get_flags(message
, &flags
);
1069 log_warning_errno(r
, "rtnl: received rule message without valid flag, ignoring: %m");
1072 tmp
->invert_rule
= flags
& FIB_RULE_INVERT
;
1074 r
= sd_netlink_message_read_u32(message
, FRA_FWMARK
, &tmp
->fwmark
);
1075 if (r
< 0 && r
!= -ENODATA
) {
1076 log_warning_errno(r
, "rtnl: could not get FRA_FWMARK attribute, ignoring: %m");
1080 r
= sd_netlink_message_read_u32(message
, FRA_FWMASK
, &tmp
->fwmask
);
1081 if (r
< 0 && r
!= -ENODATA
) {
1082 log_warning_errno(r
, "rtnl: could not get FRA_FWMASK attribute, ignoring: %m");
1086 r
= sd_netlink_message_read_u32(message
, FRA_PRIORITY
, &tmp
->priority
);
1087 if (r
< 0 && r
!= -ENODATA
) {
1088 log_warning_errno(r
, "rtnl: could not get FRA_PRIORITY attribute, ignoring: %m");
1092 r
= sd_netlink_message_read_u32(message
, FRA_TABLE
, &tmp
->table
);
1093 if (r
< 0 && r
!= -ENODATA
) {
1094 log_warning_errno(r
, "rtnl: could not get FRA_TABLE attribute, ignoring: %m");
1098 r
= sd_rtnl_message_routing_policy_rule_get_tos(message
, &tmp
->tos
);
1099 if (r
< 0 && r
!= -ENODATA
) {
1100 log_warning_errno(r
, "rtnl: could not get ip rule TOS, ignoring: %m");
1104 r
= sd_netlink_message_read_string(message
, FRA_IIFNAME
, &iif
);
1105 if (r
< 0 && r
!= -ENODATA
) {
1106 log_warning_errno(r
, "rtnl: could not get FRA_IIFNAME attribute, ignoring: %m");
1109 r
= free_and_strdup(&tmp
->iif
, iif
);
1113 r
= sd_netlink_message_read_string(message
, FRA_OIFNAME
, &oif
);
1114 if (r
< 0 && r
!= -ENODATA
) {
1115 log_warning_errno(r
, "rtnl: could not get FRA_OIFNAME attribute, ignoring: %m");
1118 r
= free_and_strdup(&tmp
->oif
, oif
);
1122 r
= sd_netlink_message_read_u8(message
, FRA_IP_PROTO
, &tmp
->protocol
);
1123 if (r
< 0 && r
!= -ENODATA
) {
1124 log_warning_errno(r
, "rtnl: could not get FRA_IP_PROTO attribute, ignoring: %m");
1128 r
= sd_netlink_message_read(message
, FRA_SPORT_RANGE
, sizeof(tmp
->sport
), &tmp
->sport
);
1129 if (r
< 0 && r
!= -ENODATA
) {
1130 log_warning_errno(r
, "rtnl: could not get FRA_SPORT_RANGE attribute, ignoring: %m");
1134 r
= sd_netlink_message_read(message
, FRA_DPORT_RANGE
, sizeof(tmp
->dport
), &tmp
->dport
);
1135 if (r
< 0 && r
!= -ENODATA
) {
1136 log_warning_errno(r
, "rtnl: could not get FRA_DPORT_RANGE attribute, ignoring: %m");
1140 (void) routing_policy_rule_get(m
, tmp
, &rule
);
1142 if (DEBUG_LOGGING
) {
1143 (void) in_addr_to_string(tmp
->family
, &tmp
->from
, &from
);
1144 (void) in_addr_to_string(tmp
->family
, &tmp
->to
, &to
);
1150 log_debug("Remembering foreign routing policy rule: %s/%u -> %s/%u, iif: %s, oif: %s, table: %u",
1151 from
, tmp
->from_prefixlen
, to
, tmp
->to_prefixlen
, strna(tmp
->iif
), strna(tmp
->oif
), tmp
->table
);
1152 r
= routing_policy_rule_add_foreign(m
, tmp
, &rule
);
1154 log_warning_errno(r
, "Could not remember foreign rule, ignoring: %m");
1160 log_debug("Forgetting routing policy rule: %s/%u -> %s/%u, iif: %s, oif: %s, table: %u",
1161 from
, tmp
->from_prefixlen
, to
, tmp
->to_prefixlen
, strna(tmp
->iif
), strna(tmp
->oif
), tmp
->table
);
1162 routing_policy_rule_free(rule
);
1167 assert_not_reached("Received invalid RTNL message type");
1173 int manager_rtnl_process_nexthop(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
1174 _cleanup_(nexthop_freep
) NextHop
*tmp
= NULL
;
1175 _cleanup_free_
char *gateway
= NULL
;
1176 NextHop
*nexthop
= NULL
;
1177 Manager
*m
= userdata
;
1186 if (sd_netlink_message_is_error(message
)) {
1187 r
= sd_netlink_message_get_errno(message
);
1189 log_message_warning_errno(message
, r
, "rtnl: failed to receive rule message, ignoring");
1194 r
= sd_netlink_message_get_type(message
, &type
);
1196 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
1198 } else if (!IN_SET(type
, RTM_NEWNEXTHOP
, RTM_DELNEXTHOP
)) {
1199 log_warning("rtnl: received unexpected message type %u when processing nexthop, ignoring.", type
);
1203 r
= nexthop_new(&tmp
);
1207 r
= sd_rtnl_message_get_family(message
, &tmp
->family
);
1209 log_warning_errno(r
, "rtnl: could not get nexthop family, ignoring: %m");
1211 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
1212 log_debug("rtnl: received nexthop message with invalid family %d, ignoring.", tmp
->family
);
1216 switch (tmp
->family
) {
1218 r
= sd_netlink_message_read_in_addr(message
, NHA_GATEWAY
, &tmp
->gw
.in
);
1219 if (r
< 0 && r
!= -ENODATA
) {
1220 log_warning_errno(r
, "rtnl: could not get NHA_GATEWAY attribute, ignoring: %m");
1226 r
= sd_netlink_message_read_in6_addr(message
, NHA_GATEWAY
, &tmp
->gw
.in6
);
1227 if (r
< 0 && r
!= -ENODATA
) {
1228 log_warning_errno(r
, "rtnl: could not get NHA_GATEWAY attribute, ignoring: %m");
1234 assert_not_reached("Received rule message with unsupported address family");
1237 r
= sd_netlink_message_read_u32(message
, NHA_ID
, &tmp
->id
);
1238 if (r
< 0 && r
!= -ENODATA
) {
1239 log_warning_errno(r
, "rtnl: could not get NHA_ID attribute, ignoring: %m");
1243 r
= sd_netlink_message_read_u32(message
, NHA_OIF
, &tmp
->oif
);
1244 if (r
< 0 && r
!= -ENODATA
) {
1245 log_warning_errno(r
, "rtnl: could not get NHA_OIF attribute, ignoring: %m");
1249 r
= link_get(m
, tmp
->oif
, &link
);
1250 if (r
< 0 || !link
) {
1251 if (!m
->enumerating
)
1252 log_warning("rtnl: received nexthop message for link (%d) we do not know about, ignoring", tmp
->oif
);
1256 (void) nexthop_get(link
, tmp
, &nexthop
);
1259 (void) in_addr_to_string(tmp
->family
, &tmp
->gw
, &gateway
);
1262 case RTM_NEWNEXTHOP
:
1264 log_debug("Remembering foreign nexthop: %s, oif: %d, id: %d", gateway
, tmp
->oif
, tmp
->id
);
1265 r
= nexthop_add_foreign(link
, tmp
, &nexthop
);
1267 log_warning_errno(r
, "Could not remember foreign nexthop, ignoring: %m");
1272 case RTM_DELNEXTHOP
:
1273 log_debug("Forgetting foreign nexthop: %s, oif: %d, id: %d", gateway
, tmp
->oif
, tmp
->id
);
1274 nexthop_free(nexthop
);
1279 assert_not_reached("Received invalid RTNL message type");
1285 static int systemd_netlink_fd(void) {
1286 int n
, fd
, rtnl_fd
= -EINVAL
;
1288 n
= sd_listen_fds(true);
1292 for (fd
= SD_LISTEN_FDS_START
; fd
< SD_LISTEN_FDS_START
+ n
; fd
++) {
1293 if (sd_is_socket(fd
, AF_NETLINK
, SOCK_RAW
, -1) > 0) {
1304 static int manager_connect_genl(Manager
*m
) {
1309 r
= sd_genl_socket_open(&m
->genl
);
1313 r
= sd_netlink_inc_rcvbuf(m
->genl
, RCVBUF_SIZE
);
1317 r
= sd_netlink_attach_event(m
->genl
, m
->event
, 0);
1324 static int manager_connect_rtnl(Manager
*m
) {
1329 fd
= systemd_netlink_fd();
1331 r
= sd_netlink_open(&m
->rtnl
);
1333 r
= sd_netlink_open_fd(&m
->rtnl
, fd
);
1337 r
= sd_netlink_inc_rcvbuf(m
->rtnl
, RCVBUF_SIZE
);
1341 r
= sd_netlink_attach_event(m
->rtnl
, m
->event
, 0);
1345 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWLINK
, &manager_rtnl_process_link
, NULL
, m
, "network-rtnl_process_link");
1349 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELLINK
, &manager_rtnl_process_link
, NULL
, m
, "network-rtnl_process_link");
1353 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWADDR
, &manager_rtnl_process_address
, NULL
, m
, "network-rtnl_process_address");
1357 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELADDR
, &manager_rtnl_process_address
, NULL
, m
, "network-rtnl_process_address");
1361 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWNEIGH
, &manager_rtnl_process_neighbor
, NULL
, m
, "network-rtnl_process_neighbor");
1365 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELNEIGH
, &manager_rtnl_process_neighbor
, NULL
, m
, "network-rtnl_process_neighbor");
1369 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWROUTE
, &manager_rtnl_process_route
, NULL
, m
, "network-rtnl_process_route");
1373 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELROUTE
, &manager_rtnl_process_route
, NULL
, m
, "network-rtnl_process_route");
1377 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWRULE
, &manager_rtnl_process_rule
, NULL
, m
, "network-rtnl_process_rule");
1381 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELRULE
, &manager_rtnl_process_rule
, NULL
, m
, "network-rtnl_process_rule");
1385 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWNEXTHOP
, &manager_rtnl_process_nexthop
, NULL
, m
, "network-rtnl_process_nexthop");
1389 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELNEXTHOP
, &manager_rtnl_process_nexthop
, NULL
, m
, "network-rtnl_process_nexthop");
1396 static int ordered_set_put_in_addr_data(OrderedSet
*s
, const struct in_addr_data
*address
) {
1403 r
= in_addr_to_string(address
->family
, &address
->address
, &p
);
1407 r
= ordered_set_consume(s
, p
);
1414 static int ordered_set_put_in_addr_datav(OrderedSet
*s
, const struct in_addr_data
*addresses
, unsigned n
) {
1419 assert(addresses
|| n
== 0);
1421 for (i
= 0; i
< n
; i
++) {
1422 r
= ordered_set_put_in_addr_data(s
, addresses
+i
);
1432 static int ordered_set_put_in4_addr(OrderedSet
*s
, const struct in_addr
*address
) {
1439 r
= in_addr_to_string(AF_INET
, (const union in_addr_union
*) address
, &p
);
1443 r
= ordered_set_consume(s
, p
);
1450 static int ordered_set_put_in4_addrv(OrderedSet
*s
,
1451 const struct in_addr
*addresses
,
1453 bool (*predicate
)(const struct in_addr
*addr
)) {
1458 assert(n
== 0 || addresses
);
1460 for (i
= 0; i
< n
; i
++) {
1461 if (predicate
&& !predicate(&addresses
[i
]))
1463 r
= ordered_set_put_in4_addr(s
, addresses
+i
);
1473 static int manager_save(Manager
*m
) {
1474 _cleanup_ordered_set_free_free_ OrderedSet
*dns
= NULL
, *ntp
= NULL
, *sip
= NULL
, *search_domains
= NULL
, *route_domains
= NULL
;
1475 const char *operstate_str
, *carrier_state_str
, *address_state_str
;
1476 LinkOperationalState operstate
= LINK_OPERSTATE_OFF
;
1477 LinkCarrierState carrier_state
= LINK_CARRIER_STATE_OFF
;
1478 LinkAddressState address_state
= LINK_ADDRESS_STATE_OFF
;
1479 _cleanup_free_
char *temp_path
= NULL
;
1480 _cleanup_strv_free_
char **p
= NULL
;
1481 _cleanup_fclose_
FILE *f
= NULL
;
1487 assert(m
->state_file
);
1489 /* We add all NTP and DNS server to a set, to filter out duplicates */
1490 dns
= ordered_set_new(&string_hash_ops
);
1494 ntp
= ordered_set_new(&string_hash_ops
);
1498 sip
= ordered_set_new(&string_hash_ops
);
1502 search_domains
= ordered_set_new(&dns_name_hash_ops
);
1503 if (!search_domains
)
1506 route_domains
= ordered_set_new(&dns_name_hash_ops
);
1510 HASHMAP_FOREACH(link
, m
->links
, i
) {
1511 if (link
->flags
& IFF_LOOPBACK
)
1514 if (link
->operstate
> operstate
)
1515 operstate
= link
->operstate
;
1517 if (link
->carrier_state
> carrier_state
)
1518 carrier_state
= link
->carrier_state
;
1520 if (link
->address_state
> address_state
)
1521 address_state
= link
->address_state
;
1526 /* First add the static configured entries */
1527 r
= ordered_set_put_in_addr_datav(dns
, link
->network
->dns
, link
->network
->n_dns
);
1531 r
= ordered_set_put_strdupv(ntp
, link
->ntp
?: link
->network
->ntp
);
1535 r
= ordered_set_put_string_set(search_domains
, link
->search_domains
?: link
->network
->search_domains
);
1539 r
= ordered_set_put_string_set(route_domains
, link
->route_domains
?: link
->network
->route_domains
);
1543 if (!link
->dhcp_lease
)
1546 /* Secondly, add the entries acquired via DHCP */
1547 if (link
->network
->dhcp_use_dns
) {
1548 const struct in_addr
*addresses
;
1550 r
= sd_dhcp_lease_get_dns(link
->dhcp_lease
, &addresses
);
1552 r
= ordered_set_put_in4_addrv(dns
, addresses
, r
, in4_addr_is_non_local
);
1555 } else if (r
< 0 && r
!= -ENODATA
)
1559 if (link
->network
->dhcp_use_ntp
) {
1560 const struct in_addr
*addresses
;
1562 r
= sd_dhcp_lease_get_ntp(link
->dhcp_lease
, &addresses
);
1564 r
= ordered_set_put_in4_addrv(ntp
, addresses
, r
, in4_addr_is_non_local
);
1567 } else if (r
< 0 && r
!= -ENODATA
)
1571 if (link
->network
->dhcp_use_sip
) {
1572 const struct in_addr
*addresses
;
1574 r
= sd_dhcp_lease_get_sip(link
->dhcp_lease
, &addresses
);
1576 r
= ordered_set_put_in4_addrv(sip
, addresses
, r
, in4_addr_is_non_local
);
1579 } else if (r
< 0 && r
!= -ENODATA
)
1583 if (link
->network
->dhcp_use_domains
!= DHCP_USE_DOMAINS_NO
) {
1584 const char *domainname
;
1585 char **domains
= NULL
;
1587 OrderedSet
*target_domains
= (link
->network
->dhcp_use_domains
== DHCP_USE_DOMAINS_YES
) ? search_domains
: route_domains
;
1588 r
= sd_dhcp_lease_get_domainname(link
->dhcp_lease
, &domainname
);
1590 r
= ordered_set_put_strdup(target_domains
, domainname
);
1593 } else if (r
!= -ENODATA
)
1596 r
= sd_dhcp_lease_get_search_domains(link
->dhcp_lease
, &domains
);
1598 r
= ordered_set_put_strdupv(target_domains
, domains
);
1601 } else if (r
!= -ENODATA
)
1606 if (carrier_state
>= LINK_CARRIER_STATE_ENSLAVED
)
1607 carrier_state
= LINK_CARRIER_STATE_CARRIER
;
1609 operstate_str
= link_operstate_to_string(operstate
);
1610 assert(operstate_str
);
1612 carrier_state_str
= link_carrier_state_to_string(carrier_state
);
1613 assert(carrier_state_str
);
1615 address_state_str
= link_address_state_to_string(address_state
);
1616 assert(address_state_str
);
1618 r
= fopen_temporary(m
->state_file
, &f
, &temp_path
);
1622 (void) fchmod(fileno(f
), 0644);
1625 "# This is private data. Do not parse.\n"
1627 "CARRIER_STATE=%s\n"
1628 "ADDRESS_STATE=%s\n",
1629 operstate_str
, carrier_state_str
, address_state_str
);
1631 ordered_set_print(f
, "DNS=", dns
);
1632 ordered_set_print(f
, "NTP=", ntp
);
1633 ordered_set_print(f
, "SIP=", sip
);
1634 ordered_set_print(f
, "DOMAINS=", search_domains
);
1635 ordered_set_print(f
, "ROUTE_DOMAINS=", route_domains
);
1637 r
= routing_policy_serialize_rules(m
->rules
, f
);
1641 r
= fflush_and_check(f
);
1645 if (rename(temp_path
, m
->state_file
) < 0) {
1650 if (m
->operational_state
!= operstate
) {
1651 m
->operational_state
= operstate
;
1652 if (strv_extend(&p
, "OperationalState") < 0)
1656 if (m
->carrier_state
!= carrier_state
) {
1657 m
->carrier_state
= carrier_state
;
1658 if (strv_extend(&p
, "CarrierState") < 0)
1662 if (m
->address_state
!= address_state
) {
1663 m
->address_state
= address_state
;
1664 if (strv_extend(&p
, "AddressState") < 0)
1669 r
= manager_send_changed_strv(m
, p
);
1671 log_error_errno(r
, "Could not emit changed properties: %m");
1679 (void) unlink(m
->state_file
);
1680 (void) unlink(temp_path
);
1682 return log_error_errno(r
, "Failed to save network state to %s: %m", m
->state_file
);
1685 static int manager_dirty_handler(sd_event_source
*s
, void *userdata
) {
1686 Manager
*m
= userdata
;
1695 SET_FOREACH(link
, m
->dirty_links
, i
)
1696 if (link_save(link
) >= 0)
1702 static int signal_terminate_callback(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
1703 Manager
*m
= userdata
;
1706 m
->restarting
= false;
1708 log_debug("Terminate operation initiated.");
1710 return sd_event_exit(sd_event_source_get_event(s
), 0);
1713 static int signal_restart_callback(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
1714 Manager
*m
= userdata
;
1717 m
->restarting
= true;
1719 log_debug("Restart operation initiated.");
1721 return sd_event_exit(sd_event_source_get_event(s
), 0);
1724 int manager_new(Manager
**ret
) {
1725 _cleanup_(manager_freep
) Manager
*m
= NULL
;
1728 m
= new(Manager
, 1);
1733 .speed_meter_interval_usec
= SPEED_METER_DEFAULT_TIME_INTERVAL
,
1736 m
->state_file
= strdup("/run/systemd/netif/state");
1740 r
= sd_event_default(&m
->event
);
1744 assert_se(sigprocmask_many(SIG_SETMASK
, NULL
, SIGINT
, SIGTERM
, SIGUSR2
, -1) >= 0);
1746 (void) sd_event_set_watchdog(m
->event
, true);
1747 (void) sd_event_add_signal(m
->event
, NULL
, SIGTERM
, signal_terminate_callback
, m
);
1748 (void) sd_event_add_signal(m
->event
, NULL
, SIGINT
, signal_terminate_callback
, m
);
1749 (void) sd_event_add_signal(m
->event
, NULL
, SIGUSR2
, signal_restart_callback
, m
);
1751 r
= sd_event_add_post(m
->event
, NULL
, manager_dirty_handler
, m
);
1755 r
= manager_connect_rtnl(m
);
1759 r
= manager_connect_genl(m
);
1763 r
= manager_connect_udev(m
);
1767 r
= sd_resolve_default(&m
->resolve
);
1771 r
= sd_resolve_attach_event(m
->resolve
, m
->event
, 0);
1775 r
= setup_default_address_pool(m
);
1779 m
->duid
.type
= DUID_TYPE_EN
;
1781 (void) routing_policy_load_rules(m
->state_file
, &m
->rules_saved
);
1788 void manager_free(Manager
*m
) {
1796 free(m
->state_file
);
1798 while ((a
= hashmap_first_key(m
->dhcp6_prefixes
)))
1799 (void) dhcp6_prefix_remove(m
, a
);
1800 m
->dhcp6_prefixes
= hashmap_free(m
->dhcp6_prefixes
);
1802 while ((link
= hashmap_steal_first(m
->links
))) {
1803 if (link
->dhcp6_client
)
1804 (void) dhcp6_lease_pd_prefix_lost(link
->dhcp6_client
, link
);
1806 (void) link_stop_clients(link
, true);
1811 m
->dirty_links
= set_free_with_destructor(m
->dirty_links
, link_unref
);
1812 m
->links_requesting_uuid
= set_free_with_destructor(m
->links_requesting_uuid
, link_unref
);
1813 m
->links
= hashmap_free_with_destructor(m
->links
, link_unref
);
1815 m
->duids_requesting_uuid
= set_free(m
->duids_requesting_uuid
);
1816 m
->networks
= ordered_hashmap_free_with_destructor(m
->networks
, network_unref
);
1818 m
->netdevs
= hashmap_free_with_destructor(m
->netdevs
, netdev_unref
);
1820 while ((pool
= m
->address_pools
))
1821 address_pool_free(pool
);
1823 /* routing_policy_rule_free() access m->rules and m->rules_foreign.
1824 * So, it is necessary to set NULL after the sets are freed. */
1825 m
->rules
= set_free_with_destructor(m
->rules
, routing_policy_rule_free
);
1826 m
->rules_foreign
= set_free_with_destructor(m
->rules_foreign
, routing_policy_rule_free
);
1827 set_free_with_destructor(m
->rules_saved
, routing_policy_rule_free
);
1829 sd_netlink_unref(m
->rtnl
);
1830 sd_netlink_unref(m
->genl
);
1831 sd_resolve_unref(m
->resolve
);
1833 sd_event_source_unref(m
->speed_meter_event_source
);
1834 sd_event_unref(m
->event
);
1836 sd_device_monitor_unref(m
->device_monitor
);
1838 bus_verify_polkit_async_registry_free(m
->polkit_registry
);
1839 sd_bus_flush_close_unref(m
->bus
);
1841 free(m
->dynamic_timezone
);
1842 free(m
->dynamic_hostname
);
1847 int manager_start(Manager
*m
) {
1854 r
= manager_start_speed_meter(m
);
1856 return log_error_errno(r
, "Failed to initialize speed meter: %m");
1858 /* The dirty handler will deal with future serialization, but the first one
1859 must be done explicitly. */
1863 HASHMAP_FOREACH(link
, m
->links
, i
)
1869 int manager_load_config(Manager
*m
) {
1872 /* update timestamp */
1873 paths_check_timestamp(NETWORK_DIRS
, &m
->network_dirs_ts_usec
, true);
1875 r
= netdev_load(m
, false);
1879 r
= network_load(m
, &m
->networks
);
1886 bool manager_should_reload(Manager
*m
) {
1887 return paths_check_timestamp(NETWORK_DIRS
, &m
->network_dirs_ts_usec
, false);
1890 int manager_rtnl_enumerate_links(Manager
*m
) {
1891 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1892 sd_netlink_message
*link
;
1898 r
= sd_rtnl_message_new_link(m
->rtnl
, &req
, RTM_GETLINK
, 0);
1902 r
= sd_netlink_message_request_dump(req
, true);
1906 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1910 for (link
= reply
; link
; link
= sd_netlink_message_next(link
)) {
1913 m
->enumerating
= true;
1915 k
= manager_rtnl_process_link(m
->rtnl
, link
, m
);
1919 m
->enumerating
= false;
1925 int manager_rtnl_enumerate_addresses(Manager
*m
) {
1926 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1927 sd_netlink_message
*addr
;
1933 r
= sd_rtnl_message_new_addr(m
->rtnl
, &req
, RTM_GETADDR
, 0, 0);
1937 r
= sd_netlink_message_request_dump(req
, true);
1941 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1945 for (addr
= reply
; addr
; addr
= sd_netlink_message_next(addr
)) {
1948 m
->enumerating
= true;
1950 k
= manager_rtnl_process_address(m
->rtnl
, addr
, m
);
1954 m
->enumerating
= false;
1960 int manager_rtnl_enumerate_neighbors(Manager
*m
) {
1961 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1962 sd_netlink_message
*neigh
;
1968 r
= sd_rtnl_message_new_neigh(m
->rtnl
, &req
, RTM_GETNEIGH
, 0, AF_UNSPEC
);
1972 r
= sd_netlink_message_request_dump(req
, true);
1976 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1980 for (neigh
= reply
; neigh
; neigh
= sd_netlink_message_next(neigh
)) {
1983 m
->enumerating
= true;
1985 k
= manager_rtnl_process_neighbor(m
->rtnl
, neigh
, m
);
1989 m
->enumerating
= false;
1995 int manager_rtnl_enumerate_routes(Manager
*m
) {
1996 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1997 sd_netlink_message
*route
;
2003 r
= sd_rtnl_message_new_route(m
->rtnl
, &req
, RTM_GETROUTE
, 0, 0);
2007 r
= sd_netlink_message_request_dump(req
, true);
2011 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2015 for (route
= reply
; route
; route
= sd_netlink_message_next(route
)) {
2018 m
->enumerating
= true;
2020 k
= manager_rtnl_process_route(m
->rtnl
, route
, m
);
2024 m
->enumerating
= false;
2030 int manager_rtnl_enumerate_rules(Manager
*m
) {
2031 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2032 sd_netlink_message
*rule
;
2038 r
= sd_rtnl_message_new_routing_policy_rule(m
->rtnl
, &req
, RTM_GETRULE
, 0);
2042 r
= sd_netlink_message_request_dump(req
, true);
2046 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2048 if (r
== -EOPNOTSUPP
) {
2049 log_debug("FIB Rules are not supported by the kernel. Ignoring.");
2056 for (rule
= reply
; rule
; rule
= sd_netlink_message_next(rule
)) {
2059 m
->enumerating
= true;
2061 k
= manager_rtnl_process_rule(m
->rtnl
, rule
, m
);
2065 m
->enumerating
= false;
2071 int manager_rtnl_enumerate_nexthop(Manager
*m
) {
2072 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2073 sd_netlink_message
*nexthop
;
2079 r
= sd_rtnl_message_new_nexthop(m
->rtnl
, &req
, RTM_GETNEXTHOP
, 0, 0);
2083 r
= sd_netlink_message_request_dump(req
, true);
2087 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2089 if (r
== -EOPNOTSUPP
) {
2090 log_debug("Nexthop are not supported by the kernel. Ignoring.");
2097 for (nexthop
= reply
; nexthop
; nexthop
= sd_netlink_message_next(nexthop
)) {
2100 m
->enumerating
= true;
2102 k
= manager_rtnl_process_nexthop(m
->rtnl
, nexthop
, m
);
2106 m
->enumerating
= false;
2112 int manager_address_pool_acquire(Manager
*m
, int family
, unsigned prefixlen
, union in_addr_union
*found
) {
2117 assert(prefixlen
> 0);
2120 LIST_FOREACH(address_pools
, p
, m
->address_pools
) {
2121 if (p
->family
!= family
)
2124 r
= address_pool_acquire(p
, prefixlen
, found
);
2132 Link
* manager_find_uplink(Manager
*m
, Link
*exclude
) {
2133 _cleanup_free_
struct local_address
*gateways
= NULL
;
2138 /* Looks for a suitable "uplink", via black magic: an
2139 * interface that is up and where the default route with the
2140 * highest priority points to. */
2142 n
= local_gateways(m
->rtnl
, 0, AF_UNSPEC
, &gateways
);
2144 log_warning_errno(n
, "Failed to determine list of default gateways: %m");
2148 for (i
= 0; i
< n
; i
++) {
2151 link
= hashmap_get(m
->links
, INT_TO_PTR(gateways
[i
].ifindex
));
2153 log_debug("Weird, found a gateway for a link we don't know. Ignoring.");
2157 if (link
== exclude
)
2160 if (link
->operstate
< LINK_OPERSTATE_ROUTABLE
)
2169 void manager_dirty(Manager
*manager
) {
2172 /* the serialized state in /run is no longer up-to-date */
2173 manager
->dirty
= true;
2176 static int set_hostname_handler(sd_bus_message
*m
, void *userdata
, sd_bus_error
*ret_error
) {
2177 Manager
*manager
= userdata
;
2178 const sd_bus_error
*e
;
2183 e
= sd_bus_message_get_error(m
);
2185 log_warning_errno(sd_bus_error_get_errno(e
), "Could not set hostname: %s", e
->message
);
2190 int manager_set_hostname(Manager
*m
, const char *hostname
) {
2193 log_debug("Setting transient hostname: '%s'", strna(hostname
));
2195 if (free_and_strdup(&m
->dynamic_hostname
, hostname
) < 0)
2198 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2199 log_debug("Not connected to system bus, setting hostname later.");
2203 r
= sd_bus_call_method_async(
2206 "org.freedesktop.hostname1",
2207 "/org/freedesktop/hostname1",
2208 "org.freedesktop.hostname1",
2210 set_hostname_handler
,
2217 return log_error_errno(r
, "Could not set transient hostname: %m");
2222 static int set_timezone_handler(sd_bus_message
*m
, void *userdata
, sd_bus_error
*ret_error
) {
2223 Manager
*manager
= userdata
;
2224 const sd_bus_error
*e
;
2229 e
= sd_bus_message_get_error(m
);
2231 log_warning_errno(sd_bus_error_get_errno(e
), "Could not set timezone: %s", e
->message
);
2236 int manager_set_timezone(Manager
*m
, const char *tz
) {
2242 log_debug("Setting system timezone: '%s'", tz
);
2243 if (free_and_strdup(&m
->dynamic_timezone
, tz
) < 0)
2246 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2247 log_debug("Not connected to system bus, setting timezone later.");
2251 r
= sd_bus_call_method_async(
2254 "org.freedesktop.timedate1",
2255 "/org/freedesktop/timedate1",
2256 "org.freedesktop.timedate1",
2258 set_timezone_handler
,
2264 return log_error_errno(r
, "Could not set timezone: %m");
2269 int manager_request_product_uuid(Manager
*m
, Link
*link
) {
2274 if (m
->has_product_uuid
)
2277 log_debug("Requesting product UUID");
2282 assert_se(duid
= link_get_duid(link
));
2284 r
= set_ensure_allocated(&m
->links_requesting_uuid
, NULL
);
2288 r
= set_ensure_allocated(&m
->duids_requesting_uuid
, NULL
);
2292 r
= set_put(m
->links_requesting_uuid
, link
);
2296 r
= set_put(m
->duids_requesting_uuid
, duid
);
2303 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2304 log_debug("Not connected to system bus, requesting product UUID later.");
2308 r
= sd_bus_call_method_async(
2311 "org.freedesktop.hostname1",
2312 "/org/freedesktop/hostname1",
2313 "org.freedesktop.hostname1",
2315 get_product_uuid_handler
,
2320 return log_warning_errno(r
, "Failed to get product UUID: %m");