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 8 MB for receive socket kernel queue. */
42 #define RCVBUF_SIZE (8*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
);
333 if (r
< 0 || !IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
334 log_link_warning(link
, "rtnl: received route message with invalid family, ignoring");
338 r
= sd_rtnl_message_route_get_protocol(message
, &tmp
->protocol
);
340 log_warning_errno(r
, "rtnl: received route message with invalid route protocol: %m");
344 switch (tmp
->family
) {
346 r
= sd_netlink_message_read_in_addr(message
, RTA_DST
, &tmp
->dst
.in
);
347 if (r
< 0 && r
!= -ENODATA
) {
348 log_link_warning_errno(link
, r
, "rtnl: received route message without valid destination, ignoring: %m");
352 r
= sd_netlink_message_read_in_addr(message
, RTA_GATEWAY
, &tmp
->gw
.in
);
353 if (r
< 0 && r
!= -ENODATA
) {
354 log_link_warning_errno(link
, r
, "rtnl: received route message without valid gateway, ignoring: %m");
358 r
= sd_netlink_message_read_in_addr(message
, RTA_SRC
, &tmp
->src
.in
);
359 if (r
< 0 && r
!= -ENODATA
) {
360 log_link_warning_errno(link
, r
, "rtnl: received route message without valid source, ignoring: %m");
364 r
= sd_netlink_message_read_in_addr(message
, RTA_PREFSRC
, &tmp
->prefsrc
.in
);
365 if (r
< 0 && r
!= -ENODATA
) {
366 log_link_warning_errno(link
, r
, "rtnl: received route message without valid preferred source, ignoring: %m");
373 r
= sd_netlink_message_read_in6_addr(message
, RTA_DST
, &tmp
->dst
.in6
);
374 if (r
< 0 && r
!= -ENODATA
) {
375 log_link_warning_errno(link
, r
, "rtnl: received route message without valid destination, ignoring: %m");
379 r
= sd_netlink_message_read_in6_addr(message
, RTA_GATEWAY
, &tmp
->gw
.in6
);
380 if (r
< 0 && r
!= -ENODATA
) {
381 log_link_warning_errno(link
, r
, "rtnl: received route message without valid gateway, ignoring: %m");
385 r
= sd_netlink_message_read_in6_addr(message
, RTA_SRC
, &tmp
->src
.in6
);
386 if (r
< 0 && r
!= -ENODATA
) {
387 log_link_warning_errno(link
, r
, "rtnl: received route message without valid source, ignoring: %m");
391 r
= sd_netlink_message_read_in6_addr(message
, RTA_PREFSRC
, &tmp
->prefsrc
.in6
);
392 if (r
< 0 && r
!= -ENODATA
) {
393 log_link_warning_errno(link
, r
, "rtnl: received route message without valid preferred source, ignoring: %m");
400 assert_not_reached("Received route message with unsupported address family");
404 r
= sd_rtnl_message_route_get_dst_prefixlen(message
, &tmp
->dst_prefixlen
);
406 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid destination prefixlen, ignoring: %m");
410 r
= sd_rtnl_message_route_get_src_prefixlen(message
, &tmp
->src_prefixlen
);
412 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid source prefixlen, ignoring: %m");
416 r
= sd_rtnl_message_route_get_scope(message
, &tmp
->scope
);
418 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid scope, ignoring: %m");
422 r
= sd_rtnl_message_route_get_tos(message
, &tmp
->tos
);
424 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid tos, ignoring: %m");
428 r
= sd_rtnl_message_route_get_type(message
, &tmp
->type
);
430 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid type, ignoring: %m");
434 r
= sd_rtnl_message_route_get_table(message
, &table
);
436 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid table, ignoring: %m");
441 r
= sd_netlink_message_read_u32(message
, RTA_PRIORITY
, &tmp
->priority
);
442 if (r
< 0 && r
!= -ENODATA
) {
443 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid priority, ignoring: %m");
447 r
= sd_netlink_message_enter_container(message
, RTA_METRICS
);
448 if (r
< 0 && r
!= -ENODATA
) {
449 log_link_error_errno(link
, r
, "rtnl: Could not enter RTA_METRICS container: %m");
453 r
= sd_netlink_message_read_u32(message
, RTAX_INITCWND
, &tmp
->initcwnd
);
454 if (r
< 0 && r
!= -ENODATA
) {
455 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid initcwnd, ignoring: %m");
459 r
= sd_netlink_message_read_u32(message
, RTAX_INITRWND
, &tmp
->initrwnd
);
460 if (r
< 0 && r
!= -ENODATA
) {
461 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid initrwnd, ignoring: %m");
465 r
= sd_netlink_message_exit_container(message
);
467 log_link_error_errno(link
, r
, "rtnl: Could not exit from RTA_METRICS container: %m");
472 (void) route_get(link
, tmp
, &route
);
475 _cleanup_free_
char *buf_dst
= NULL
, *buf_dst_prefixlen
= NULL
,
476 *buf_src
= NULL
, *buf_gw
= NULL
, *buf_prefsrc
= NULL
;
477 char buf_scope
[ROUTE_SCOPE_STR_MAX
], buf_table
[ROUTE_TABLE_STR_MAX
],
478 buf_protocol
[ROUTE_PROTOCOL_STR_MAX
];
480 if (!in_addr_is_null(tmp
->family
, &tmp
->dst
)) {
481 (void) in_addr_to_string(tmp
->family
, &tmp
->dst
, &buf_dst
);
482 (void) asprintf(&buf_dst_prefixlen
, "/%u", tmp
->dst_prefixlen
);
484 if (!in_addr_is_null(tmp
->family
, &tmp
->src
))
485 (void) in_addr_to_string(tmp
->family
, &tmp
->src
, &buf_src
);
486 if (!in_addr_is_null(tmp
->family
, &tmp
->gw
))
487 (void) in_addr_to_string(tmp
->family
, &tmp
->gw
, &buf_gw
);
488 if (!in_addr_is_null(tmp
->family
, &tmp
->prefsrc
))
489 (void) in_addr_to_string(tmp
->family
, &tmp
->prefsrc
, &buf_prefsrc
);
492 "%s route: dst: %s%s, src: %s, gw: %s, prefsrc: %s, scope: %s, table: %s, proto: %s, type: %s",
493 type
== RTM_DELROUTE
? "Forgetting" : route
? "Received remembered" : "Remembering",
494 strna(buf_dst
), strempty(buf_dst_prefixlen
),
495 strna(buf_src
), strna(buf_gw
), strna(buf_prefsrc
),
496 format_route_scope(tmp
->scope
, buf_scope
, sizeof buf_scope
),
497 format_route_table(tmp
->table
, buf_table
, sizeof buf_table
),
498 format_route_protocol(tmp
->protocol
, buf_protocol
, sizeof buf_protocol
),
499 strna(route_type_to_string(tmp
->type
)));
505 /* A route appeared that we did not request */
506 r
= route_add_foreign(link
, tmp
, &route
);
508 log_link_warning_errno(link
, r
, "Failed to remember foreign route, ignoring: %m");
520 assert_not_reached("Received route message with invalid RTNL message type");
526 static int manager_rtnl_process_neighbor_lladdr(sd_netlink_message
*message
, union lladdr_union
*lladdr
, size_t *size
, char **str
) {
536 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->ip
.in6
), &lladdr
->ip
.in6
);
538 *size
= sizeof(lladdr
->ip
.in6
);
539 if (in_addr_to_string(AF_INET6
, &lladdr
->ip
, str
) < 0)
540 log_warning_errno(r
, "Could not print lower address: %m");
544 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->mac
), &lladdr
->mac
);
546 *size
= sizeof(lladdr
->mac
);
547 *str
= new(char, ETHER_ADDR_TO_STRING_MAX
);
552 ether_addr_to_string(&lladdr
->mac
, *str
);
556 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->ip
.in
), &lladdr
->ip
.in
);
558 *size
= sizeof(lladdr
->ip
.in
);
559 if (in_addr_to_string(AF_INET
, &lladdr
->ip
, str
) < 0)
560 log_warning_errno(r
, "Could not print lower address: %m");
567 int manager_rtnl_process_neighbor(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
568 Manager
*m
= userdata
;
570 Neighbor
*neighbor
= NULL
;
571 int ifindex
, family
, r
;
572 uint16_t type
, state
;
573 union in_addr_union in_addr
= IN_ADDR_NULL
;
574 _cleanup_free_
char *addr_str
= NULL
;
575 union lladdr_union lladdr
;
576 size_t lladdr_size
= 0;
577 _cleanup_free_
char *lladdr_str
= NULL
;
583 if (sd_netlink_message_is_error(message
)) {
584 r
= sd_netlink_message_get_errno(message
);
586 log_message_warning_errno(message
, r
, "rtnl: failed to receive neighbor message, ignoring");
591 r
= sd_netlink_message_get_type(message
, &type
);
593 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
595 } else if (!IN_SET(type
, RTM_NEWNEIGH
, RTM_DELNEIGH
)) {
596 log_warning("rtnl: received unexpected message type %u when processing neighbor, ignoring.", type
);
600 r
= sd_rtnl_message_neigh_get_state(message
, &state
);
602 log_link_warning_errno(link
, r
, "rtnl: received neighbor message with invalid state, ignoring: %m");
604 } else if (!FLAGS_SET(state
, NUD_PERMANENT
)) {
605 log_debug("rtnl: received non-static neighbor, ignoring.");
609 r
= sd_rtnl_message_neigh_get_ifindex(message
, &ifindex
);
611 log_warning_errno(r
, "rtnl: could not get ifindex from message, ignoring: %m");
613 } else if (ifindex
<= 0) {
614 log_warning("rtnl: received neighbor message with invalid ifindex %d, ignoring.", ifindex
);
618 r
= link_get(m
, ifindex
, &link
);
619 if (r
< 0 || !link
) {
620 /* when enumerating we might be out of sync, but we will get the neighbor again, so just
623 log_warning("rtnl: received neighbor for link '%d' we don't know about, ignoring.", ifindex
);
627 r
= sd_rtnl_message_neigh_get_family(message
, &family
);
628 if (r
< 0 || !IN_SET(family
, AF_INET
, AF_INET6
)) {
629 log_link_warning(link
, "rtnl: received neighbor message with invalid family, ignoring.");
635 r
= sd_netlink_message_read_in_addr(message
, NDA_DST
, &in_addr
.in
);
637 log_link_warning_errno(link
, r
, "rtnl: received neighbor message without valid address, ignoring: %m");
644 r
= sd_netlink_message_read_in6_addr(message
, NDA_DST
, &in_addr
.in6
);
646 log_link_warning_errno(link
, r
, "rtnl: received neighbor message without valid address, ignoring: %m");
653 assert_not_reached("Received unsupported address family");
656 if (in_addr_to_string(family
, &in_addr
, &addr_str
) < 0)
657 log_link_warning_errno(link
, r
, "Could not print address: %m");
659 r
= manager_rtnl_process_neighbor_lladdr(message
, &lladdr
, &lladdr_size
, &lladdr_str
);
661 log_link_warning_errno(link
, r
, "rtnl: received neighbor message with invalid lladdr, ignoring: %m");
665 (void) neighbor_get(link
, family
, &in_addr
, &lladdr
, lladdr_size
, &neighbor
);
670 log_link_debug(link
, "Remembering neighbor: %s->%s",
671 strnull(addr_str
), strnull(lladdr_str
));
673 /* A neighbor appeared that we did not request */
674 r
= neighbor_add_foreign(link
, family
, &in_addr
, &lladdr
, lladdr_size
, &neighbor
);
676 log_link_warning_errno(link
, r
, "Failed to remember foreign neighbor %s->%s, ignoring: %m",
677 strnull(addr_str
), strnull(lladdr_str
));
680 log_link_debug(link
, "Remembering foreign neighbor: %s->%s",
681 strnull(addr_str
), strnull(lladdr_str
));
688 log_link_debug(link
, "Forgetting neighbor: %s->%s",
689 strnull(addr_str
), strnull(lladdr_str
));
690 (void) neighbor_free(neighbor
);
692 log_link_info(link
, "Kernel removed a neighbor we don't remember: %s->%s, ignoring.",
693 strnull(addr_str
), strnull(lladdr_str
));
698 assert_not_reached("Received invalid RTNL message type");
704 int manager_rtnl_process_address(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
705 _cleanup_free_
char *buf
= NULL
;
706 Manager
*m
= userdata
;
709 unsigned char flags
, prefixlen
, scope
;
710 union in_addr_union in_addr
= IN_ADDR_NULL
;
711 struct ifa_cacheinfo cinfo
;
712 Address
*address
= NULL
;
713 char valid_buf
[FORMAT_TIMESPAN_MAX
];
714 const char *valid_str
= NULL
;
715 int ifindex
, family
, r
;
721 if (sd_netlink_message_is_error(message
)) {
722 r
= sd_netlink_message_get_errno(message
);
724 log_message_warning_errno(message
, r
, "rtnl: failed to receive address message, ignoring");
729 r
= sd_netlink_message_get_type(message
, &type
);
731 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
733 } else if (!IN_SET(type
, RTM_NEWADDR
, RTM_DELADDR
)) {
734 log_warning("rtnl: received unexpected message type %u when processing address, ignoring.", type
);
738 r
= sd_rtnl_message_addr_get_ifindex(message
, &ifindex
);
740 log_warning_errno(r
, "rtnl: could not get ifindex from message, ignoring: %m");
742 } else if (ifindex
<= 0) {
743 log_warning("rtnl: received address message with invalid ifindex %d, ignoring.", ifindex
);
747 r
= link_get(m
, ifindex
, &link
);
748 if (r
< 0 || !link
) {
749 /* when enumerating we might be out of sync, but we will get the address again, so just
752 log_warning("rtnl: received address for link '%d' we don't know about, ignoring.", ifindex
);
756 r
= sd_rtnl_message_addr_get_family(message
, &family
);
757 if (r
< 0 || !IN_SET(family
, AF_INET
, AF_INET6
)) {
758 log_link_warning(link
, "rtnl: received address message with invalid family, ignoring.");
762 r
= sd_rtnl_message_addr_get_prefixlen(message
, &prefixlen
);
764 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid prefixlen, ignoring: %m");
768 r
= sd_rtnl_message_addr_get_scope(message
, &scope
);
770 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid scope, ignoring: %m");
774 r
= sd_rtnl_message_addr_get_flags(message
, &flags
);
776 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid flags, ignoring: %m");
782 r
= sd_netlink_message_read_in_addr(message
, IFA_LOCAL
, &in_addr
.in
);
784 log_link_warning_errno(link
, r
, "rtnl: received address message without valid address, ignoring: %m");
791 r
= sd_netlink_message_read_in6_addr(message
, IFA_ADDRESS
, &in_addr
.in6
);
793 log_link_warning_errno(link
, r
, "rtnl: received address message without valid address, ignoring: %m");
800 assert_not_reached("Received unsupported address family");
803 r
= in_addr_to_string(family
, &in_addr
, &buf
);
805 log_link_warning_errno(link
, r
, "Could not print address: %m");
807 r
= sd_netlink_message_read_cache_info(message
, IFA_CACHEINFO
, &cinfo
);
808 if (r
< 0 && r
!= -ENODATA
) {
809 log_link_warning_errno(link
, r
, "rtnl: cannot get IFA_CACHEINFO attribute, ignoring: %m");
811 } else if (r
>= 0 && cinfo
.ifa_valid
!= CACHE_INFO_INFINITY_LIFE_TIME
)
812 valid_str
= format_timespan(valid_buf
, FORMAT_TIMESPAN_MAX
,
813 cinfo
.ifa_valid
* USEC_PER_SEC
,
816 (void) address_get(link
, family
, &in_addr
, prefixlen
, &address
);
821 log_link_debug(link
, "Remembering updated address: %s/%u (valid %s%s)",
822 strnull(buf
), prefixlen
,
823 valid_str
? "for " : "forever", strempty(valid_str
));
825 /* An address appeared that we did not request */
826 r
= address_add_foreign(link
, family
, &in_addr
, prefixlen
, &address
);
828 log_link_warning_errno(link
, r
, "Failed to remember foreign address %s/%u, ignoring: %m",
829 strnull(buf
), prefixlen
);
832 log_link_debug(link
, "Remembering foreign address: %s/%u (valid %s%s)",
833 strnull(buf
), prefixlen
,
834 valid_str
? "for " : "forever", strempty(valid_str
));
837 /* address_update() logs internally, so we don't need to. */
838 (void) address_update(address
, flags
, scope
, &cinfo
);
844 log_link_debug(link
, "Forgetting address: %s/%u (valid %s%s)",
845 strnull(buf
), prefixlen
,
846 valid_str
? "for " : "forever", strempty(valid_str
));
847 (void) address_drop(address
);
849 log_link_info(link
, "Kernel removed an address we don't remember: %s/%u (valid %s%s), ignoring.",
850 strnull(buf
), prefixlen
,
851 valid_str
? "for " : "forever", strempty(valid_str
));
856 assert_not_reached("Received invalid RTNL message type");
862 static int manager_rtnl_process_link(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
863 Manager
*m
= userdata
;
865 NetDev
*netdev
= NULL
;
874 if (sd_netlink_message_is_error(message
)) {
875 r
= sd_netlink_message_get_errno(message
);
877 log_message_warning_errno(message
, r
, "rtnl: Could not receive link message, ignoring");
882 r
= sd_netlink_message_get_type(message
, &type
);
884 log_warning_errno(r
, "rtnl: Could not get message type, ignoring: %m");
886 } else if (!IN_SET(type
, RTM_NEWLINK
, RTM_DELLINK
)) {
887 log_warning("rtnl: Received unexpected message type %u when processing link, ignoring.", type
);
891 r
= sd_rtnl_message_link_get_ifindex(message
, &ifindex
);
893 log_warning_errno(r
, "rtnl: Could not get ifindex from link message, ignoring: %m");
895 } else if (ifindex
<= 0) {
896 log_warning("rtnl: received link message with invalid ifindex %d, ignoring.", ifindex
);
900 r
= sd_netlink_message_read_string(message
, IFLA_IFNAME
, &name
);
902 log_warning_errno(r
, "rtnl: Received link message without ifname, ignoring: %m");
906 (void) link_get(m
, ifindex
, &link
);
907 (void) netdev_get(m
, name
, &netdev
);
912 /* link is new, so add it */
913 r
= link_add(m
, message
, &link
);
915 log_warning_errno(r
, "Could not process new link message, ignoring: %m");
921 /* netdev exists, so make sure the ifindex matches */
922 r
= netdev_set_ifindex(netdev
, message
);
924 log_warning_errno(r
, "Could not process new link message for netdev, ignoring: %m");
929 r
= link_update(link
, message
);
931 log_warning_errno(r
, "Could not process link message, ignoring: %m");
944 assert_not_reached("Received link message with invalid RTNL message type.");
950 int manager_rtnl_process_rule(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
951 _cleanup_(routing_policy_rule_freep
) RoutingPolicyRule
*tmp
= NULL
;
952 _cleanup_free_
char *from
= NULL
, *to
= NULL
;
953 RoutingPolicyRule
*rule
= NULL
;
954 const char *iif
= NULL
, *oif
= NULL
;
955 Manager
*m
= userdata
;
964 if (sd_netlink_message_is_error(message
)) {
965 r
= sd_netlink_message_get_errno(message
);
967 log_message_warning_errno(message
, r
, "rtnl: failed to receive rule message, ignoring");
972 r
= sd_netlink_message_get_type(message
, &type
);
974 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
976 } else if (!IN_SET(type
, RTM_NEWRULE
, RTM_DELRULE
)) {
977 log_warning("rtnl: received unexpected message type %u when processing rule, ignoring.", type
);
981 r
= routing_policy_rule_new(&tmp
);
987 r
= sd_rtnl_message_get_family(message
, &tmp
->family
);
989 log_warning_errno(r
, "rtnl: could not get rule family, ignoring: %m");
991 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
992 log_debug("rtnl: received rule message with invalid family %d, ignoring.", tmp
->family
);
996 switch (tmp
->family
) {
998 r
= sd_netlink_message_read_in_addr(message
, FRA_SRC
, &tmp
->from
.in
);
999 if (r
< 0 && r
!= -ENODATA
) {
1000 log_warning_errno(r
, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
1002 } else if (r
>= 0) {
1003 r
= sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message
, &tmp
->from_prefixlen
);
1005 log_warning_errno(r
, "rtnl: received rule message without valid source prefix length, ignoring: %m");
1010 r
= sd_netlink_message_read_in_addr(message
, FRA_DST
, &tmp
->to
.in
);
1011 if (r
< 0 && r
!= -ENODATA
) {
1012 log_warning_errno(r
, "rtnl: could not get FRA_DST attribute, ignoring: %m");
1014 } else if (r
>= 0) {
1015 r
= sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message
, &tmp
->to_prefixlen
);
1017 log_warning_errno(r
, "rtnl: received rule message without valid destination prefix length, ignoring: %m");
1025 r
= sd_netlink_message_read_in6_addr(message
, FRA_SRC
, &tmp
->from
.in6
);
1026 if (r
< 0 && r
!= -ENODATA
) {
1027 log_warning_errno(r
, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
1029 } else if (r
>= 0) {
1030 r
= sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message
, &tmp
->from_prefixlen
);
1032 log_warning_errno(r
, "rtnl: received rule message without valid source prefix length, ignoring: %m");
1037 r
= sd_netlink_message_read_in6_addr(message
, FRA_DST
, &tmp
->to
.in6
);
1038 if (r
< 0 && r
!= -ENODATA
) {
1039 log_warning_errno(r
, "rtnl: could not get FRA_DST attribute, ignoring: %m");
1041 } else if (r
>= 0) {
1042 r
= sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message
, &tmp
->to_prefixlen
);
1044 log_warning_errno(r
, "rtnl: received rule message without valid destination prefix length, ignoring: %m");
1052 assert_not_reached("Received rule message with unsupported address family");
1055 if (tmp
->from_prefixlen
== 0 && tmp
->to_prefixlen
== 0)
1058 r
= sd_rtnl_message_routing_policy_rule_get_flags(message
, &flags
);
1060 log_warning_errno(r
, "rtnl: received rule message without valid flag, ignoring: %m");
1063 tmp
->invert_rule
= flags
& FIB_RULE_INVERT
;
1065 r
= sd_netlink_message_read_u32(message
, FRA_FWMARK
, &tmp
->fwmark
);
1066 if (r
< 0 && r
!= -ENODATA
) {
1067 log_warning_errno(r
, "rtnl: could not get FRA_FWMARK attribute, ignoring: %m");
1071 r
= sd_netlink_message_read_u32(message
, FRA_FWMASK
, &tmp
->fwmask
);
1072 if (r
< 0 && r
!= -ENODATA
) {
1073 log_warning_errno(r
, "rtnl: could not get FRA_FWMASK attribute, ignoring: %m");
1077 r
= sd_netlink_message_read_u32(message
, FRA_PRIORITY
, &tmp
->priority
);
1078 if (r
< 0 && r
!= -ENODATA
) {
1079 log_warning_errno(r
, "rtnl: could not get FRA_PRIORITY attribute, ignoring: %m");
1083 r
= sd_netlink_message_read_u32(message
, FRA_TABLE
, &tmp
->table
);
1084 if (r
< 0 && r
!= -ENODATA
) {
1085 log_warning_errno(r
, "rtnl: could not get FRA_TABLE attribute, ignoring: %m");
1089 r
= sd_rtnl_message_routing_policy_rule_get_tos(message
, &tmp
->tos
);
1090 if (r
< 0 && r
!= -ENODATA
) {
1091 log_warning_errno(r
, "rtnl: could not get ip rule TOS, ignoring: %m");
1095 r
= sd_netlink_message_read_string(message
, FRA_IIFNAME
, &iif
);
1096 if (r
< 0 && r
!= -ENODATA
) {
1097 log_warning_errno(r
, "rtnl: could not get FRA_IIFNAME attribute, ignoring: %m");
1100 r
= free_and_strdup(&tmp
->iif
, iif
);
1104 r
= sd_netlink_message_read_string(message
, FRA_OIFNAME
, &oif
);
1105 if (r
< 0 && r
!= -ENODATA
) {
1106 log_warning_errno(r
, "rtnl: could not get FRA_OIFNAME attribute, ignoring: %m");
1109 r
= free_and_strdup(&tmp
->oif
, oif
);
1113 r
= sd_netlink_message_read_u8(message
, FRA_IP_PROTO
, &tmp
->protocol
);
1114 if (r
< 0 && r
!= -ENODATA
) {
1115 log_warning_errno(r
, "rtnl: could not get FRA_IP_PROTO attribute, ignoring: %m");
1119 r
= sd_netlink_message_read(message
, FRA_SPORT_RANGE
, sizeof(tmp
->sport
), &tmp
->sport
);
1120 if (r
< 0 && r
!= -ENODATA
) {
1121 log_warning_errno(r
, "rtnl: could not get FRA_SPORT_RANGE attribute, ignoring: %m");
1125 r
= sd_netlink_message_read(message
, FRA_DPORT_RANGE
, sizeof(tmp
->dport
), &tmp
->dport
);
1126 if (r
< 0 && r
!= -ENODATA
) {
1127 log_warning_errno(r
, "rtnl: could not get FRA_DPORT_RANGE attribute, ignoring: %m");
1131 (void) routing_policy_rule_get(m
, tmp
, &rule
);
1133 if (DEBUG_LOGGING
) {
1134 (void) in_addr_to_string(tmp
->family
, &tmp
->from
, &from
);
1135 (void) in_addr_to_string(tmp
->family
, &tmp
->to
, &to
);
1141 log_debug("Remembering foreign routing policy rule: %s/%u -> %s/%u, iif: %s, oif: %s, table: %u",
1142 from
, tmp
->from_prefixlen
, to
, tmp
->to_prefixlen
, strna(tmp
->iif
), strna(tmp
->oif
), tmp
->table
);
1143 r
= routing_policy_rule_add_foreign(m
, tmp
, &rule
);
1145 log_warning_errno(r
, "Could not remember foreign rule, ignoring: %m");
1151 log_debug("Forgetting routing policy rule: %s/%u -> %s/%u, iif: %s, oif: %s, table: %u",
1152 from
, tmp
->from_prefixlen
, to
, tmp
->to_prefixlen
, strna(tmp
->iif
), strna(tmp
->oif
), tmp
->table
);
1153 routing_policy_rule_free(rule
);
1158 assert_not_reached("Received invalid RTNL message type");
1164 int manager_rtnl_process_nexthop(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
1165 _cleanup_(nexthop_freep
) NextHop
*tmp
= NULL
;
1166 _cleanup_free_
char *gateway
= NULL
;
1167 NextHop
*nexthop
= NULL
;
1168 Manager
*m
= userdata
;
1177 if (sd_netlink_message_is_error(message
)) {
1178 r
= sd_netlink_message_get_errno(message
);
1180 log_message_warning_errno(message
, r
, "rtnl: failed to receive rule message, ignoring");
1185 r
= sd_netlink_message_get_type(message
, &type
);
1187 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
1189 } else if (!IN_SET(type
, RTM_NEWNEXTHOP
, RTM_DELNEXTHOP
)) {
1190 log_warning("rtnl: received unexpected message type %u when processing nexthop, ignoring.", type
);
1194 r
= nexthop_new(&tmp
);
1198 r
= sd_rtnl_message_get_family(message
, &tmp
->family
);
1200 log_warning_errno(r
, "rtnl: could not get nexthop family, ignoring: %m");
1202 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
1203 log_debug("rtnl: received nexthop message with invalid family %d, ignoring.", tmp
->family
);
1207 switch (tmp
->family
) {
1209 r
= sd_netlink_message_read_in_addr(message
, NHA_GATEWAY
, &tmp
->gw
.in
);
1210 if (r
< 0 && r
!= -ENODATA
) {
1211 log_warning_errno(r
, "rtnl: could not get NHA_GATEWAY attribute, ignoring: %m");
1217 r
= sd_netlink_message_read_in6_addr(message
, NHA_GATEWAY
, &tmp
->gw
.in6
);
1218 if (r
< 0 && r
!= -ENODATA
) {
1219 log_warning_errno(r
, "rtnl: could not get NHA_GATEWAY attribute, ignoring: %m");
1225 assert_not_reached("Received rule message with unsupported address family");
1228 r
= sd_netlink_message_read_u32(message
, NHA_ID
, &tmp
->id
);
1229 if (r
< 0 && r
!= -ENODATA
) {
1230 log_warning_errno(r
, "rtnl: could not get NHA_ID attribute, ignoring: %m");
1234 r
= sd_netlink_message_read_u32(message
, NHA_OIF
, &tmp
->oif
);
1235 if (r
< 0 && r
!= -ENODATA
) {
1236 log_warning_errno(r
, "rtnl: could not get NHA_OIF attribute, ignoring: %m");
1240 r
= link_get(m
, tmp
->oif
, &link
);
1241 if (r
< 0 || !link
) {
1242 if (!m
->enumerating
)
1243 log_warning("rtnl: received nexthop message for link (%d) we do not know about, ignoring", tmp
->oif
);
1247 (void) nexthop_get(link
, tmp
, &nexthop
);
1250 (void) in_addr_to_string(tmp
->family
, &tmp
->gw
, &gateway
);
1253 case RTM_NEWNEXTHOP
:
1255 log_debug("Remembering foreign nexthop: %s, oif: %d, id: %d", gateway
, tmp
->oif
, tmp
->id
);
1256 r
= nexthop_add_foreign(link
, tmp
, &nexthop
);
1258 log_warning_errno(r
, "Could not remember foreign nexthop, ignoring: %m");
1263 case RTM_DELNEXTHOP
:
1264 log_debug("Forgetting foreign nexthop: %s, oif: %d, id: %d", gateway
, tmp
->oif
, tmp
->id
);
1265 nexthop_free(nexthop
);
1270 assert_not_reached("Received invalid RTNL message type");
1276 static int systemd_netlink_fd(void) {
1277 int n
, fd
, rtnl_fd
= -EINVAL
;
1279 n
= sd_listen_fds(true);
1283 for (fd
= SD_LISTEN_FDS_START
; fd
< SD_LISTEN_FDS_START
+ n
; fd
++) {
1284 if (sd_is_socket(fd
, AF_NETLINK
, SOCK_RAW
, -1) > 0) {
1295 static int manager_connect_genl(Manager
*m
) {
1300 r
= sd_genl_socket_open(&m
->genl
);
1304 r
= sd_netlink_inc_rcvbuf(m
->genl
, RCVBUF_SIZE
);
1308 r
= sd_netlink_attach_event(m
->genl
, m
->event
, 0);
1315 static int manager_connect_rtnl(Manager
*m
) {
1320 fd
= systemd_netlink_fd();
1322 r
= sd_netlink_open(&m
->rtnl
);
1324 r
= sd_netlink_open_fd(&m
->rtnl
, fd
);
1328 r
= sd_netlink_inc_rcvbuf(m
->rtnl
, RCVBUF_SIZE
);
1332 r
= sd_netlink_attach_event(m
->rtnl
, m
->event
, 0);
1336 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWLINK
, &manager_rtnl_process_link
, NULL
, m
, "network-rtnl_process_link");
1340 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELLINK
, &manager_rtnl_process_link
, NULL
, m
, "network-rtnl_process_link");
1344 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWADDR
, &manager_rtnl_process_address
, NULL
, m
, "network-rtnl_process_address");
1348 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELADDR
, &manager_rtnl_process_address
, NULL
, m
, "network-rtnl_process_address");
1352 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWNEIGH
, &manager_rtnl_process_neighbor
, NULL
, m
, "network-rtnl_process_neighbor");
1356 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELNEIGH
, &manager_rtnl_process_neighbor
, NULL
, m
, "network-rtnl_process_neighbor");
1360 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWROUTE
, &manager_rtnl_process_route
, NULL
, m
, "network-rtnl_process_route");
1364 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELROUTE
, &manager_rtnl_process_route
, NULL
, m
, "network-rtnl_process_route");
1368 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWRULE
, &manager_rtnl_process_rule
, NULL
, m
, "network-rtnl_process_rule");
1372 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELRULE
, &manager_rtnl_process_rule
, NULL
, m
, "network-rtnl_process_rule");
1376 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWNEXTHOP
, &manager_rtnl_process_nexthop
, NULL
, m
, "network-rtnl_process_nexthop");
1380 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELNEXTHOP
, &manager_rtnl_process_nexthop
, NULL
, m
, "network-rtnl_process_nexthop");
1387 static int ordered_set_put_in_addr_data(OrderedSet
*s
, const struct in_addr_data
*address
) {
1394 r
= in_addr_to_string(address
->family
, &address
->address
, &p
);
1398 r
= ordered_set_consume(s
, p
);
1405 static int ordered_set_put_in_addr_datav(OrderedSet
*s
, const struct in_addr_data
*addresses
, unsigned n
) {
1410 assert(addresses
|| n
== 0);
1412 for (i
= 0; i
< n
; i
++) {
1413 r
= ordered_set_put_in_addr_data(s
, addresses
+i
);
1423 static int ordered_set_put_in4_addr(OrderedSet
*s
, const struct in_addr
*address
) {
1430 r
= in_addr_to_string(AF_INET
, (const union in_addr_union
*) address
, &p
);
1434 r
= ordered_set_consume(s
, p
);
1441 static int ordered_set_put_in4_addrv(OrderedSet
*s
,
1442 const struct in_addr
*addresses
,
1444 bool (*predicate
)(const struct in_addr
*addr
)) {
1449 assert(n
== 0 || addresses
);
1451 for (i
= 0; i
< n
; i
++) {
1452 if (predicate
&& !predicate(&addresses
[i
]))
1454 r
= ordered_set_put_in4_addr(s
, addresses
+i
);
1464 static int manager_save(Manager
*m
) {
1465 _cleanup_ordered_set_free_free_ OrderedSet
*dns
= NULL
, *ntp
= NULL
, *sip
= NULL
, *search_domains
= NULL
, *route_domains
= NULL
;
1466 const char *operstate_str
, *carrier_state_str
, *address_state_str
;
1467 LinkOperationalState operstate
= LINK_OPERSTATE_OFF
;
1468 LinkCarrierState carrier_state
= LINK_CARRIER_STATE_OFF
;
1469 LinkAddressState address_state
= LINK_ADDRESS_STATE_OFF
;
1470 _cleanup_free_
char *temp_path
= NULL
;
1471 _cleanup_strv_free_
char **p
= NULL
;
1472 _cleanup_fclose_
FILE *f
= NULL
;
1478 assert(m
->state_file
);
1480 /* We add all NTP and DNS server to a set, to filter out duplicates */
1481 dns
= ordered_set_new(&string_hash_ops
);
1485 ntp
= ordered_set_new(&string_hash_ops
);
1489 sip
= ordered_set_new(&string_hash_ops
);
1493 search_domains
= ordered_set_new(&dns_name_hash_ops
);
1494 if (!search_domains
)
1497 route_domains
= ordered_set_new(&dns_name_hash_ops
);
1501 HASHMAP_FOREACH(link
, m
->links
, i
) {
1502 if (link
->flags
& IFF_LOOPBACK
)
1505 if (link
->operstate
> operstate
)
1506 operstate
= link
->operstate
;
1508 if (link
->carrier_state
> carrier_state
)
1509 carrier_state
= link
->carrier_state
;
1511 if (link
->address_state
> address_state
)
1512 address_state
= link
->address_state
;
1517 /* First add the static configured entries */
1518 r
= ordered_set_put_in_addr_datav(dns
, link
->network
->dns
, link
->network
->n_dns
);
1522 r
= ordered_set_put_strdupv(ntp
, link
->ntp
?: link
->network
->ntp
);
1526 r
= ordered_set_put_string_set(search_domains
, link
->search_domains
?: link
->network
->search_domains
);
1530 r
= ordered_set_put_string_set(route_domains
, link
->route_domains
?: link
->network
->route_domains
);
1534 if (!link
->dhcp_lease
)
1537 /* Secondly, add the entries acquired via DHCP */
1538 if (link
->network
->dhcp_use_dns
) {
1539 const struct in_addr
*addresses
;
1541 r
= sd_dhcp_lease_get_dns(link
->dhcp_lease
, &addresses
);
1543 r
= ordered_set_put_in4_addrv(dns
, addresses
, r
, in4_addr_is_non_local
);
1546 } else if (r
< 0 && r
!= -ENODATA
)
1550 if (link
->network
->dhcp_use_ntp
) {
1551 const struct in_addr
*addresses
;
1553 r
= sd_dhcp_lease_get_ntp(link
->dhcp_lease
, &addresses
);
1555 r
= ordered_set_put_in4_addrv(ntp
, addresses
, r
, in4_addr_is_non_local
);
1558 } else if (r
< 0 && r
!= -ENODATA
)
1562 if (link
->network
->dhcp_use_sip
) {
1563 const struct in_addr
*addresses
;
1565 r
= sd_dhcp_lease_get_sip(link
->dhcp_lease
, &addresses
);
1567 r
= ordered_set_put_in4_addrv(sip
, addresses
, r
, in4_addr_is_non_local
);
1570 } else if (r
< 0 && r
!= -ENODATA
)
1574 if (link
->network
->dhcp_use_domains
!= DHCP_USE_DOMAINS_NO
) {
1575 const char *domainname
;
1576 char **domains
= NULL
;
1578 OrderedSet
*target_domains
= (link
->network
->dhcp_use_domains
== DHCP_USE_DOMAINS_YES
) ? search_domains
: route_domains
;
1579 r
= sd_dhcp_lease_get_domainname(link
->dhcp_lease
, &domainname
);
1581 r
= ordered_set_put_strdup(target_domains
, domainname
);
1584 } else if (r
!= -ENODATA
)
1587 r
= sd_dhcp_lease_get_search_domains(link
->dhcp_lease
, &domains
);
1589 r
= ordered_set_put_strdupv(target_domains
, domains
);
1592 } else if (r
!= -ENODATA
)
1597 if (carrier_state
>= LINK_CARRIER_STATE_ENSLAVED
)
1598 carrier_state
= LINK_CARRIER_STATE_CARRIER
;
1600 operstate_str
= link_operstate_to_string(operstate
);
1601 assert(operstate_str
);
1603 carrier_state_str
= link_carrier_state_to_string(carrier_state
);
1604 assert(carrier_state_str
);
1606 address_state_str
= link_address_state_to_string(address_state
);
1607 assert(address_state_str
);
1609 r
= fopen_temporary(m
->state_file
, &f
, &temp_path
);
1613 (void) fchmod(fileno(f
), 0644);
1616 "# This is private data. Do not parse.\n"
1618 "CARRIER_STATE=%s\n"
1619 "ADDRESS_STATE=%s\n",
1620 operstate_str
, carrier_state_str
, address_state_str
);
1622 ordered_set_print(f
, "DNS=", dns
);
1623 ordered_set_print(f
, "NTP=", ntp
);
1624 ordered_set_print(f
, "SIP=", sip
);
1625 ordered_set_print(f
, "DOMAINS=", search_domains
);
1626 ordered_set_print(f
, "ROUTE_DOMAINS=", route_domains
);
1628 r
= routing_policy_serialize_rules(m
->rules
, f
);
1632 r
= fflush_and_check(f
);
1636 if (rename(temp_path
, m
->state_file
) < 0) {
1641 if (m
->operational_state
!= operstate
) {
1642 m
->operational_state
= operstate
;
1643 if (strv_extend(&p
, "OperationalState") < 0)
1647 if (m
->carrier_state
!= carrier_state
) {
1648 m
->carrier_state
= carrier_state
;
1649 if (strv_extend(&p
, "CarrierState") < 0)
1653 if (m
->address_state
!= address_state
) {
1654 m
->address_state
= address_state
;
1655 if (strv_extend(&p
, "AddressState") < 0)
1660 r
= manager_send_changed_strv(m
, p
);
1662 log_error_errno(r
, "Could not emit changed properties: %m");
1670 (void) unlink(m
->state_file
);
1671 (void) unlink(temp_path
);
1673 return log_error_errno(r
, "Failed to save network state to %s: %m", m
->state_file
);
1676 static int manager_dirty_handler(sd_event_source
*s
, void *userdata
) {
1677 Manager
*m
= userdata
;
1686 SET_FOREACH(link
, m
->dirty_links
, i
)
1687 if (link_save(link
) >= 0)
1693 static int signal_terminate_callback(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
1694 Manager
*m
= userdata
;
1697 m
->restarting
= false;
1699 log_debug("Terminate operation initiated.");
1701 return sd_event_exit(sd_event_source_get_event(s
), 0);
1704 static int signal_restart_callback(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
1705 Manager
*m
= userdata
;
1708 m
->restarting
= true;
1710 log_debug("Restart operation initiated.");
1712 return sd_event_exit(sd_event_source_get_event(s
), 0);
1715 int manager_new(Manager
**ret
) {
1716 _cleanup_(manager_freep
) Manager
*m
= NULL
;
1719 m
= new(Manager
, 1);
1724 .speed_meter_interval_usec
= SPEED_METER_DEFAULT_TIME_INTERVAL
,
1727 m
->state_file
= strdup("/run/systemd/netif/state");
1731 r
= sd_event_default(&m
->event
);
1735 assert_se(sigprocmask_many(SIG_SETMASK
, NULL
, SIGINT
, SIGTERM
, SIGUSR2
, -1) >= 0);
1737 (void) sd_event_set_watchdog(m
->event
, true);
1738 (void) sd_event_add_signal(m
->event
, NULL
, SIGTERM
, signal_terminate_callback
, m
);
1739 (void) sd_event_add_signal(m
->event
, NULL
, SIGINT
, signal_terminate_callback
, m
);
1740 (void) sd_event_add_signal(m
->event
, NULL
, SIGUSR2
, signal_restart_callback
, m
);
1742 r
= sd_event_add_post(m
->event
, NULL
, manager_dirty_handler
, m
);
1746 r
= manager_connect_rtnl(m
);
1750 r
= manager_connect_genl(m
);
1754 r
= manager_connect_udev(m
);
1758 r
= sd_resolve_default(&m
->resolve
);
1762 r
= sd_resolve_attach_event(m
->resolve
, m
->event
, 0);
1766 r
= setup_default_address_pool(m
);
1770 m
->duid
.type
= DUID_TYPE_EN
;
1772 (void) routing_policy_load_rules(m
->state_file
, &m
->rules_saved
);
1779 void manager_free(Manager
*m
) {
1787 free(m
->state_file
);
1789 while ((a
= hashmap_first_key(m
->dhcp6_prefixes
)))
1790 (void) dhcp6_prefix_remove(m
, a
);
1791 m
->dhcp6_prefixes
= hashmap_free(m
->dhcp6_prefixes
);
1793 while ((link
= hashmap_steal_first(m
->links
))) {
1794 if (link
->dhcp6_client
)
1795 (void) dhcp6_lease_pd_prefix_lost(link
->dhcp6_client
, link
);
1797 (void) link_stop_clients(link
, true);
1802 m
->dirty_links
= set_free_with_destructor(m
->dirty_links
, link_unref
);
1803 m
->links_requesting_uuid
= set_free_with_destructor(m
->links_requesting_uuid
, link_unref
);
1804 m
->links
= hashmap_free_with_destructor(m
->links
, link_unref
);
1806 m
->duids_requesting_uuid
= set_free(m
->duids_requesting_uuid
);
1807 m
->networks
= ordered_hashmap_free_with_destructor(m
->networks
, network_unref
);
1809 m
->netdevs
= hashmap_free_with_destructor(m
->netdevs
, netdev_unref
);
1811 while ((pool
= m
->address_pools
))
1812 address_pool_free(pool
);
1814 /* routing_policy_rule_free() access m->rules and m->rules_foreign.
1815 * So, it is necessary to set NULL after the sets are freed. */
1816 m
->rules
= set_free_with_destructor(m
->rules
, routing_policy_rule_free
);
1817 m
->rules_foreign
= set_free_with_destructor(m
->rules_foreign
, routing_policy_rule_free
);
1818 set_free_with_destructor(m
->rules_saved
, routing_policy_rule_free
);
1820 sd_netlink_unref(m
->rtnl
);
1821 sd_netlink_unref(m
->genl
);
1822 sd_resolve_unref(m
->resolve
);
1824 sd_event_source_unref(m
->speed_meter_event_source
);
1825 sd_event_unref(m
->event
);
1827 sd_device_monitor_unref(m
->device_monitor
);
1829 bus_verify_polkit_async_registry_free(m
->polkit_registry
);
1830 sd_bus_flush_close_unref(m
->bus
);
1832 free(m
->dynamic_timezone
);
1833 free(m
->dynamic_hostname
);
1838 int manager_start(Manager
*m
) {
1845 r
= manager_start_speed_meter(m
);
1847 return log_error_errno(r
, "Failed to initialize speed meter: %m");
1849 /* The dirty handler will deal with future serialization, but the first one
1850 must be done explicitly. */
1854 HASHMAP_FOREACH(link
, m
->links
, i
)
1860 int manager_load_config(Manager
*m
) {
1863 /* update timestamp */
1864 paths_check_timestamp(NETWORK_DIRS
, &m
->network_dirs_ts_usec
, true);
1866 r
= netdev_load(m
, false);
1870 r
= network_load(m
, &m
->networks
);
1877 bool manager_should_reload(Manager
*m
) {
1878 return paths_check_timestamp(NETWORK_DIRS
, &m
->network_dirs_ts_usec
, false);
1881 int manager_rtnl_enumerate_links(Manager
*m
) {
1882 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1883 sd_netlink_message
*link
;
1889 r
= sd_rtnl_message_new_link(m
->rtnl
, &req
, RTM_GETLINK
, 0);
1893 r
= sd_netlink_message_request_dump(req
, true);
1897 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1901 for (link
= reply
; link
; link
= sd_netlink_message_next(link
)) {
1904 m
->enumerating
= true;
1906 k
= manager_rtnl_process_link(m
->rtnl
, link
, m
);
1910 m
->enumerating
= false;
1916 int manager_rtnl_enumerate_addresses(Manager
*m
) {
1917 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1918 sd_netlink_message
*addr
;
1924 r
= sd_rtnl_message_new_addr(m
->rtnl
, &req
, RTM_GETADDR
, 0, 0);
1928 r
= sd_netlink_message_request_dump(req
, true);
1932 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1936 for (addr
= reply
; addr
; addr
= sd_netlink_message_next(addr
)) {
1939 m
->enumerating
= true;
1941 k
= manager_rtnl_process_address(m
->rtnl
, addr
, m
);
1945 m
->enumerating
= false;
1951 int manager_rtnl_enumerate_neighbors(Manager
*m
) {
1952 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1953 sd_netlink_message
*neigh
;
1959 r
= sd_rtnl_message_new_neigh(m
->rtnl
, &req
, RTM_GETNEIGH
, 0, AF_UNSPEC
);
1963 r
= sd_netlink_message_request_dump(req
, true);
1967 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1971 for (neigh
= reply
; neigh
; neigh
= sd_netlink_message_next(neigh
)) {
1974 m
->enumerating
= true;
1976 k
= manager_rtnl_process_neighbor(m
->rtnl
, neigh
, m
);
1980 m
->enumerating
= false;
1986 int manager_rtnl_enumerate_routes(Manager
*m
) {
1987 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1988 sd_netlink_message
*route
;
1994 r
= sd_rtnl_message_new_route(m
->rtnl
, &req
, RTM_GETROUTE
, 0, 0);
1998 r
= sd_netlink_message_request_dump(req
, true);
2002 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2006 for (route
= reply
; route
; route
= sd_netlink_message_next(route
)) {
2009 m
->enumerating
= true;
2011 k
= manager_rtnl_process_route(m
->rtnl
, route
, m
);
2015 m
->enumerating
= false;
2021 int manager_rtnl_enumerate_rules(Manager
*m
) {
2022 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2023 sd_netlink_message
*rule
;
2029 r
= sd_rtnl_message_new_routing_policy_rule(m
->rtnl
, &req
, RTM_GETRULE
, 0);
2033 r
= sd_netlink_message_request_dump(req
, true);
2037 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2039 if (r
== -EOPNOTSUPP
) {
2040 log_debug("FIB Rules are not supported by the kernel. Ignoring.");
2047 for (rule
= reply
; rule
; rule
= sd_netlink_message_next(rule
)) {
2050 m
->enumerating
= true;
2052 k
= manager_rtnl_process_rule(m
->rtnl
, rule
, m
);
2056 m
->enumerating
= false;
2062 int manager_rtnl_enumerate_nexthop(Manager
*m
) {
2063 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2064 sd_netlink_message
*nexthop
;
2070 r
= sd_rtnl_message_new_nexthop(m
->rtnl
, &req
, RTM_GETNEXTHOP
, 0, 0);
2074 r
= sd_netlink_message_request_dump(req
, true);
2078 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2080 if (r
== -EOPNOTSUPP
) {
2081 log_debug("Nexthop are not supported by the kernel. Ignoring.");
2088 for (nexthop
= reply
; nexthop
; nexthop
= sd_netlink_message_next(nexthop
)) {
2091 m
->enumerating
= true;
2093 k
= manager_rtnl_process_nexthop(m
->rtnl
, nexthop
, m
);
2097 m
->enumerating
= false;
2103 int manager_address_pool_acquire(Manager
*m
, int family
, unsigned prefixlen
, union in_addr_union
*found
) {
2108 assert(prefixlen
> 0);
2111 LIST_FOREACH(address_pools
, p
, m
->address_pools
) {
2112 if (p
->family
!= family
)
2115 r
= address_pool_acquire(p
, prefixlen
, found
);
2123 Link
* manager_find_uplink(Manager
*m
, Link
*exclude
) {
2124 _cleanup_free_
struct local_address
*gateways
= NULL
;
2129 /* Looks for a suitable "uplink", via black magic: an
2130 * interface that is up and where the default route with the
2131 * highest priority points to. */
2133 n
= local_gateways(m
->rtnl
, 0, AF_UNSPEC
, &gateways
);
2135 log_warning_errno(n
, "Failed to determine list of default gateways: %m");
2139 for (i
= 0; i
< n
; i
++) {
2142 link
= hashmap_get(m
->links
, INT_TO_PTR(gateways
[i
].ifindex
));
2144 log_debug("Weird, found a gateway for a link we don't know. Ignoring.");
2148 if (link
== exclude
)
2151 if (link
->operstate
< LINK_OPERSTATE_ROUTABLE
)
2160 void manager_dirty(Manager
*manager
) {
2163 /* the serialized state in /run is no longer up-to-date */
2164 manager
->dirty
= true;
2167 static int set_hostname_handler(sd_bus_message
*m
, void *userdata
, sd_bus_error
*ret_error
) {
2168 Manager
*manager
= userdata
;
2169 const sd_bus_error
*e
;
2174 e
= sd_bus_message_get_error(m
);
2176 log_warning_errno(sd_bus_error_get_errno(e
), "Could not set hostname: %s", e
->message
);
2181 int manager_set_hostname(Manager
*m
, const char *hostname
) {
2184 log_debug("Setting transient hostname: '%s'", strna(hostname
));
2186 if (free_and_strdup(&m
->dynamic_hostname
, hostname
) < 0)
2189 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2190 log_debug("Not connected to system bus, setting hostname later.");
2194 r
= sd_bus_call_method_async(
2197 "org.freedesktop.hostname1",
2198 "/org/freedesktop/hostname1",
2199 "org.freedesktop.hostname1",
2201 set_hostname_handler
,
2208 return log_error_errno(r
, "Could not set transient hostname: %m");
2213 static int set_timezone_handler(sd_bus_message
*m
, void *userdata
, sd_bus_error
*ret_error
) {
2214 Manager
*manager
= userdata
;
2215 const sd_bus_error
*e
;
2220 e
= sd_bus_message_get_error(m
);
2222 log_warning_errno(sd_bus_error_get_errno(e
), "Could not set timezone: %s", e
->message
);
2227 int manager_set_timezone(Manager
*m
, const char *tz
) {
2233 log_debug("Setting system timezone: '%s'", tz
);
2234 if (free_and_strdup(&m
->dynamic_timezone
, tz
) < 0)
2237 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2238 log_debug("Not connected to system bus, setting timezone later.");
2242 r
= sd_bus_call_method_async(
2245 "org.freedesktop.timedate1",
2246 "/org/freedesktop/timedate1",
2247 "org.freedesktop.timedate1",
2249 set_timezone_handler
,
2255 return log_error_errno(r
, "Could not set timezone: %m");
2260 int manager_request_product_uuid(Manager
*m
, Link
*link
) {
2265 if (m
->has_product_uuid
)
2268 log_debug("Requesting product UUID");
2273 assert_se(duid
= link_get_duid(link
));
2275 r
= set_ensure_allocated(&m
->links_requesting_uuid
, NULL
);
2279 r
= set_ensure_allocated(&m
->duids_requesting_uuid
, NULL
);
2283 r
= set_put(m
->links_requesting_uuid
, link
);
2287 r
= set_put(m
->duids_requesting_uuid
, duid
);
2294 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2295 log_debug("Not connected to system bus, requesting product UUID later.");
2299 r
= sd_bus_call_method_async(
2302 "org.freedesktop.hostname1",
2303 "/org/freedesktop/hostname1",
2304 "org.freedesktop.hostname1",
2306 get_product_uuid_handler
,
2311 return log_warning_errno(r
, "Failed to get product UUID: %m");