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 setup_default_address_pool(Manager
*m
) {
50 /* Add in the well-known private address ranges. */
52 r
= address_pool_new_from_string(m
, &p
, AF_INET6
, "fd00::", 8);
56 r
= address_pool_new_from_string(m
, &p
, AF_INET
, "10.0.0.0", 8);
60 r
= address_pool_new_from_string(m
, &p
, AF_INET
, "172.16.0.0", 12);
64 r
= address_pool_new_from_string(m
, &p
, AF_INET
, "192.168.0.0", 16);
71 static int manager_reset_all(Manager
*m
) {
78 HASHMAP_FOREACH(link
, m
->links
, i
) {
79 r
= link_carrier_reset(link
);
81 log_link_warning_errno(link
, r
, "Could not reset carrier: %m");
87 static int match_prepare_for_sleep(sd_bus_message
*message
, void *userdata
, sd_bus_error
*ret_error
) {
88 Manager
*m
= userdata
;
94 r
= sd_bus_message_read(message
, "b", &b
);
96 log_debug_errno(r
, "Failed to parse PrepareForSleep signal: %m");
103 log_debug("Coming back from suspend, resetting all connections...");
105 (void) manager_reset_all(m
);
110 static int on_connected(sd_bus_message
*message
, void *userdata
, sd_bus_error
*ret_error
) {
111 Manager
*m
= userdata
;
116 /* Did we get a timezone or transient hostname from DHCP while D-Bus wasn't up yet? */
117 if (m
->dynamic_hostname
)
118 (void) manager_set_hostname(m
, m
->dynamic_hostname
);
119 if (m
->dynamic_timezone
)
120 (void) manager_set_timezone(m
, m
->dynamic_timezone
);
121 if (m
->links_requesting_uuid
)
122 (void) manager_request_product_uuid(m
, NULL
);
127 int manager_connect_bus(Manager
*m
) {
135 r
= bus_open_system_watch_bind_with_description(&m
->bus
, "bus-api-network");
137 return log_error_errno(r
, "Failed to connect to bus: %m");
139 r
= sd_bus_add_object_vtable(m
->bus
, NULL
, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", manager_vtable
, m
);
141 return log_error_errno(r
, "Failed to add manager object vtable: %m");
143 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link", link_vtable
, link_object_find
, m
);
145 return log_error_errno(r
, "Failed to add link object vtable: %m");
147 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/network1/link", link_node_enumerator
, m
);
149 return log_error_errno(r
, "Failed to add link enumerator: %m");
151 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable
, network_object_find
, m
);
153 return log_error_errno(r
, "Failed to add network object vtable: %m");
155 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/network1/network", network_node_enumerator
, m
);
157 return log_error_errno(r
, "Failed to add network enumerator: %m");
159 r
= sd_bus_request_name_async(m
->bus
, NULL
, "org.freedesktop.network1", 0, NULL
, NULL
);
161 return log_error_errno(r
, "Failed to request name: %m");
163 r
= sd_bus_attach_event(m
->bus
, m
->event
, 0);
165 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
167 r
= sd_bus_match_signal_async(
170 "org.freedesktop.DBus.Local",
172 "org.freedesktop.DBus.Local",
174 on_connected
, NULL
, m
);
176 return log_error_errno(r
, "Failed to request match on Connected signal: %m");
178 r
= sd_bus_match_signal_async(
181 "org.freedesktop.login1",
182 "/org/freedesktop/login1",
183 "org.freedesktop.login1.Manager",
185 match_prepare_for_sleep
, NULL
, m
);
187 log_warning_errno(r
, "Failed to request match for PrepareForSleep, ignoring: %m");
192 static int manager_udev_process_link(sd_device_monitor
*monitor
, sd_device
*device
, void *userdata
) {
193 Manager
*m
= userdata
;
201 r
= device_get_action(device
, &action
);
203 log_device_debug_errno(device
, r
, "Failed to get udev action, ignoring device: %m");
207 if (!IN_SET(action
, DEVICE_ACTION_ADD
, DEVICE_ACTION_CHANGE
, DEVICE_ACTION_MOVE
)) {
208 log_device_debug(device
, "Ignoring udev %s event for device.", device_action_to_string(action
));
212 r
= sd_device_get_ifindex(device
, &ifindex
);
214 log_device_debug_errno(device
, r
, "Ignoring udev ADD event for device without ifindex or with invalid ifindex: %m");
218 r
= device_is_renaming(device
);
220 log_device_error_errno(device
, r
, "Failed to determine the device is renamed or not, ignoring '%s' uevent: %m",
221 device_action_to_string(action
));
225 log_device_debug(device
, "Interface is under renaming, wait for the interface to be renamed: %m");
229 r
= link_get(m
, ifindex
, &link
);
232 log_debug_errno(r
, "Failed to get link from ifindex %i, ignoring: %m", ifindex
);
236 (void) link_initialized(link
, device
);
241 static int manager_connect_udev(Manager
*m
) {
244 /* udev does not initialize devices inside containers,
245 * so we rely on them being already initialized before
246 * entering the container */
247 if (detect_container() > 0)
250 r
= sd_device_monitor_new(&m
->device_monitor
);
252 return log_error_errno(r
, "Failed to initialize device monitor: %m");
254 r
= sd_device_monitor_filter_add_match_subsystem_devtype(m
->device_monitor
, "net", NULL
);
256 return log_error_errno(r
, "Could not add device monitor filter: %m");
258 r
= sd_device_monitor_attach_event(m
->device_monitor
, m
->event
);
260 return log_error_errno(r
, "Failed to attach event to device monitor: %m");
262 r
= sd_device_monitor_start(m
->device_monitor
, manager_udev_process_link
, m
);
264 return log_error_errno(r
, "Failed to start device monitor: %m");
269 int manager_rtnl_process_route(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
270 _cleanup_(route_freep
) Route
*tmp
= NULL
;
272 Manager
*m
= userdata
;
283 if (sd_netlink_message_is_error(message
)) {
284 r
= sd_netlink_message_get_errno(message
);
286 log_warning_errno(r
, "rtnl: failed to receive route message, ignoring: %m");
291 r
= sd_netlink_message_get_type(message
, &type
);
293 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
295 } else if (!IN_SET(type
, RTM_NEWROUTE
, RTM_DELROUTE
)) {
296 log_warning("rtnl: received unexpected message type %u when processing route, ignoring.", type
);
300 r
= sd_netlink_message_read_u32(message
, RTA_OIF
, &ifindex
);
302 log_debug("rtnl: received route message without ifindex, ignoring");
305 log_warning_errno(r
, "rtnl: could not get ifindex from route message, ignoring: %m");
307 } else if (ifindex
<= 0) {
308 log_warning("rtnl: received route message with invalid ifindex %d, ignoring.", ifindex
);
312 r
= link_get(m
, ifindex
, &link
);
313 if (r
< 0 || !link
) {
314 /* when enumerating we might be out of sync, but we will
315 * get the route again, so just ignore it */
317 log_warning("rtnl: received route message for link (%d) we do not know about, ignoring", ifindex
);
325 r
= sd_rtnl_message_route_get_family(message
, &tmp
->family
);
326 if (r
< 0 || !IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
327 log_link_warning(link
, "rtnl: received route message with invalid family, ignoring");
331 r
= sd_rtnl_message_route_get_protocol(message
, &tmp
->protocol
);
333 log_warning_errno(r
, "rtnl: received route message with invalid route protocol: %m");
337 switch (tmp
->family
) {
339 r
= sd_netlink_message_read_in_addr(message
, RTA_DST
, &tmp
->dst
.in
);
340 if (r
< 0 && r
!= -ENODATA
) {
341 log_link_warning_errno(link
, r
, "rtnl: received route message without valid destination, ignoring: %m");
345 r
= sd_netlink_message_read_in_addr(message
, RTA_GATEWAY
, &tmp
->gw
.in
);
346 if (r
< 0 && r
!= -ENODATA
) {
347 log_link_warning_errno(link
, r
, "rtnl: received route message without valid gateway, ignoring: %m");
351 r
= sd_netlink_message_read_in_addr(message
, RTA_SRC
, &tmp
->src
.in
);
352 if (r
< 0 && r
!= -ENODATA
) {
353 log_link_warning_errno(link
, r
, "rtnl: received route message without valid source, ignoring: %m");
357 r
= sd_netlink_message_read_in_addr(message
, RTA_PREFSRC
, &tmp
->prefsrc
.in
);
358 if (r
< 0 && r
!= -ENODATA
) {
359 log_link_warning_errno(link
, r
, "rtnl: received route message without valid preferred source, ignoring: %m");
366 r
= sd_netlink_message_read_in6_addr(message
, RTA_DST
, &tmp
->dst
.in6
);
367 if (r
< 0 && r
!= -ENODATA
) {
368 log_link_warning_errno(link
, r
, "rtnl: received route message without valid destination, ignoring: %m");
372 r
= sd_netlink_message_read_in6_addr(message
, RTA_GATEWAY
, &tmp
->gw
.in6
);
373 if (r
< 0 && r
!= -ENODATA
) {
374 log_link_warning_errno(link
, r
, "rtnl: received route message without valid gateway, ignoring: %m");
378 r
= sd_netlink_message_read_in6_addr(message
, RTA_SRC
, &tmp
->src
.in6
);
379 if (r
< 0 && r
!= -ENODATA
) {
380 log_link_warning_errno(link
, r
, "rtnl: received route message without valid source, ignoring: %m");
384 r
= sd_netlink_message_read_in6_addr(message
, RTA_PREFSRC
, &tmp
->prefsrc
.in6
);
385 if (r
< 0 && r
!= -ENODATA
) {
386 log_link_warning_errno(link
, r
, "rtnl: received route message without valid preferred source, ignoring: %m");
393 assert_not_reached("Received route message with unsupported address family");
397 r
= sd_rtnl_message_route_get_dst_prefixlen(message
, &tmp
->dst_prefixlen
);
399 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid destination prefixlen, ignoring: %m");
403 r
= sd_rtnl_message_route_get_src_prefixlen(message
, &tmp
->src_prefixlen
);
405 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid source prefixlen, ignoring: %m");
409 r
= sd_rtnl_message_route_get_scope(message
, &tmp
->scope
);
411 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid scope, ignoring: %m");
415 r
= sd_rtnl_message_route_get_tos(message
, &tmp
->tos
);
417 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid tos, ignoring: %m");
421 r
= sd_rtnl_message_route_get_type(message
, &tmp
->type
);
423 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid type, ignoring: %m");
427 r
= sd_rtnl_message_route_get_table(message
, &table
);
429 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid table, ignoring: %m");
434 r
= sd_netlink_message_read_u32(message
, RTA_PRIORITY
, &tmp
->priority
);
435 if (r
< 0 && r
!= -ENODATA
) {
436 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid priority, ignoring: %m");
440 r
= sd_netlink_message_enter_container(message
, RTA_METRICS
);
441 if (r
< 0 && r
!= -ENODATA
) {
442 log_link_error_errno(link
, r
, "rtnl: Could not enter RTA_METRICS container: %m");
446 r
= sd_netlink_message_read_u32(message
, RTAX_INITCWND
, &tmp
->initcwnd
);
447 if (r
< 0 && r
!= -ENODATA
) {
448 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid initcwnd, ignoring: %m");
452 r
= sd_netlink_message_read_u32(message
, RTAX_INITRWND
, &tmp
->initrwnd
);
453 if (r
< 0 && r
!= -ENODATA
) {
454 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid initrwnd, ignoring: %m");
458 r
= sd_netlink_message_exit_container(message
);
460 log_link_error_errno(link
, r
, "rtnl: Could not exit from RTA_METRICS container: %m");
465 (void) route_get(link
, tmp
, &route
);
468 _cleanup_free_
char *buf_dst
= NULL
, *buf_dst_prefixlen
= NULL
,
469 *buf_src
= NULL
, *buf_gw
= NULL
, *buf_prefsrc
= NULL
;
470 char buf_scope
[ROUTE_SCOPE_STR_MAX
], buf_table
[ROUTE_TABLE_STR_MAX
],
471 buf_protocol
[ROUTE_PROTOCOL_STR_MAX
];
473 if (!in_addr_is_null(tmp
->family
, &tmp
->dst
)) {
474 (void) in_addr_to_string(tmp
->family
, &tmp
->dst
, &buf_dst
);
475 (void) asprintf(&buf_dst_prefixlen
, "/%u", tmp
->dst_prefixlen
);
477 if (!in_addr_is_null(tmp
->family
, &tmp
->src
))
478 (void) in_addr_to_string(tmp
->family
, &tmp
->src
, &buf_src
);
479 if (!in_addr_is_null(tmp
->family
, &tmp
->gw
))
480 (void) in_addr_to_string(tmp
->family
, &tmp
->gw
, &buf_gw
);
481 if (!in_addr_is_null(tmp
->family
, &tmp
->prefsrc
))
482 (void) in_addr_to_string(tmp
->family
, &tmp
->prefsrc
, &buf_prefsrc
);
485 "%s route: dst: %s%s, src: %s, gw: %s, prefsrc: %s, scope: %s, table: %s, proto: %s, type: %s",
486 type
== RTM_DELROUTE
? "Forgetting" : route
? "Received remembered" : "Remembering",
487 strna(buf_dst
), strempty(buf_dst_prefixlen
),
488 strna(buf_src
), strna(buf_gw
), strna(buf_prefsrc
),
489 format_route_scope(tmp
->scope
, buf_scope
, sizeof buf_scope
),
490 format_route_table(tmp
->table
, buf_table
, sizeof buf_table
),
491 format_route_protocol(tmp
->protocol
, buf_protocol
, sizeof buf_protocol
),
492 strna(route_type_to_string(tmp
->type
)));
498 /* A route appeared that we did not request */
499 r
= route_add_foreign(link
, tmp
, &route
);
501 log_link_warning_errno(link
, r
, "Failed to remember foreign route, ignoring: %m");
513 assert_not_reached("Received route message with invalid RTNL message type");
519 static int manager_rtnl_process_neighbor_lladdr(sd_netlink_message
*message
, union lladdr_union
*lladdr
, size_t *size
, char **str
) {
529 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->ip
.in6
), &lladdr
->ip
.in6
);
531 *size
= sizeof(lladdr
->ip
.in6
);
532 if (in_addr_to_string(AF_INET6
, &lladdr
->ip
, str
) < 0)
533 log_warning_errno(r
, "Could not print lower address: %m");
537 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->mac
), &lladdr
->mac
);
539 *size
= sizeof(lladdr
->mac
);
540 *str
= new(char, ETHER_ADDR_TO_STRING_MAX
);
545 ether_addr_to_string(&lladdr
->mac
, *str
);
549 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->ip
.in
), &lladdr
->ip
.in
);
551 *size
= sizeof(lladdr
->ip
.in
);
552 if (in_addr_to_string(AF_INET
, &lladdr
->ip
, str
) < 0)
553 log_warning_errno(r
, "Could not print lower address: %m");
560 int manager_rtnl_process_neighbor(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
561 Manager
*m
= userdata
;
563 Neighbor
*neighbor
= NULL
;
564 int ifindex
, family
, r
;
565 uint16_t type
, state
;
566 union in_addr_union in_addr
= IN_ADDR_NULL
;
567 _cleanup_free_
char *addr_str
= NULL
;
568 union lladdr_union lladdr
;
569 size_t lladdr_size
= 0;
570 _cleanup_free_
char *lladdr_str
= NULL
;
576 if (sd_netlink_message_is_error(message
)) {
577 r
= sd_netlink_message_get_errno(message
);
579 log_warning_errno(r
, "rtnl: failed to receive neighbor message, ignoring: %m");
584 r
= sd_netlink_message_get_type(message
, &type
);
586 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
588 } else if (!IN_SET(type
, RTM_NEWNEIGH
, RTM_DELNEIGH
)) {
589 log_warning("rtnl: received unexpected message type %u when processing neighbor, ignoring.", type
);
593 r
= sd_rtnl_message_neigh_get_state(message
, &state
);
595 log_link_warning_errno(link
, r
, "rtnl: received neighbor message with invalid state, ignoring: %m");
597 } else if (!FLAGS_SET(state
, NUD_PERMANENT
)) {
598 log_debug("rtnl: received non-static neighbor, ignoring.");
602 r
= sd_rtnl_message_neigh_get_ifindex(message
, &ifindex
);
604 log_warning_errno(r
, "rtnl: could not get ifindex from message, ignoring: %m");
606 } else if (ifindex
<= 0) {
607 log_warning("rtnl: received neighbor message with invalid ifindex %d, ignoring.", ifindex
);
611 r
= link_get(m
, ifindex
, &link
);
612 if (r
< 0 || !link
) {
613 /* when enumerating we might be out of sync, but we will get the neighbor again, so just
616 log_warning("rtnl: received neighbor for link '%d' we don't know about, ignoring.", ifindex
);
620 r
= sd_rtnl_message_neigh_get_family(message
, &family
);
621 if (r
< 0 || !IN_SET(family
, AF_INET
, AF_INET6
)) {
622 log_link_warning(link
, "rtnl: received neighbor message with invalid family, ignoring.");
628 r
= sd_netlink_message_read_in_addr(message
, NDA_DST
, &in_addr
.in
);
630 log_link_warning_errno(link
, r
, "rtnl: received neighbor message without valid address, ignoring: %m");
637 r
= sd_netlink_message_read_in6_addr(message
, NDA_DST
, &in_addr
.in6
);
639 log_link_warning_errno(link
, r
, "rtnl: received neighbor message without valid address, ignoring: %m");
646 assert_not_reached("Received unsupported address family");
649 if (in_addr_to_string(family
, &in_addr
, &addr_str
) < 0)
650 log_link_warning_errno(link
, r
, "Could not print address: %m");
652 r
= manager_rtnl_process_neighbor_lladdr(message
, &lladdr
, &lladdr_size
, &lladdr_str
);
654 log_link_warning_errno(link
, r
, "rtnl: received neighbor message with invalid lladdr, ignoring: %m");
658 (void) neighbor_get(link
, family
, &in_addr
, &lladdr
, lladdr_size
, &neighbor
);
663 log_link_debug(link
, "Remembering neighbor: %s->%s",
664 strnull(addr_str
), strnull(lladdr_str
));
666 /* A neighbor appeared that we did not request */
667 r
= neighbor_add_foreign(link
, family
, &in_addr
, &lladdr
, lladdr_size
, &neighbor
);
669 log_link_warning_errno(link
, r
, "Failed to remember foreign neighbor %s->%s, ignoring: %m",
670 strnull(addr_str
), strnull(lladdr_str
));
673 log_link_debug(link
, "Remembering foreign neighbor: %s->%s",
674 strnull(addr_str
), strnull(lladdr_str
));
681 log_link_debug(link
, "Forgetting neighbor: %s->%s",
682 strnull(addr_str
), strnull(lladdr_str
));
683 (void) neighbor_free(neighbor
);
685 log_link_info(link
, "Kernel removed a neighbor we don't remember: %s->%s, ignoring.",
686 strnull(addr_str
), strnull(lladdr_str
));
691 assert_not_reached("Received invalid RTNL message type");
697 int manager_rtnl_process_address(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
698 _cleanup_free_
char *buf
= NULL
;
699 Manager
*m
= userdata
;
702 unsigned char flags
, prefixlen
, scope
;
703 union in_addr_union in_addr
= IN_ADDR_NULL
;
704 struct ifa_cacheinfo cinfo
;
705 Address
*address
= NULL
;
706 char valid_buf
[FORMAT_TIMESPAN_MAX
];
707 const char *valid_str
= NULL
;
708 int ifindex
, family
, r
;
714 if (sd_netlink_message_is_error(message
)) {
715 r
= sd_netlink_message_get_errno(message
);
717 log_warning_errno(r
, "rtnl: failed to receive address message, ignoring: %m");
722 r
= sd_netlink_message_get_type(message
, &type
);
724 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
726 } else if (!IN_SET(type
, RTM_NEWADDR
, RTM_DELADDR
)) {
727 log_warning("rtnl: received unexpected message type %u when processing address, ignoring.", type
);
731 r
= sd_rtnl_message_addr_get_ifindex(message
, &ifindex
);
733 log_warning_errno(r
, "rtnl: could not get ifindex from message, ignoring: %m");
735 } else if (ifindex
<= 0) {
736 log_warning("rtnl: received address message with invalid ifindex %d, ignoring.", ifindex
);
740 r
= link_get(m
, ifindex
, &link
);
741 if (r
< 0 || !link
) {
742 /* when enumerating we might be out of sync, but we will get the address again, so just
745 log_warning("rtnl: received address for link '%d' we don't know about, ignoring.", ifindex
);
749 r
= sd_rtnl_message_addr_get_family(message
, &family
);
750 if (r
< 0 || !IN_SET(family
, AF_INET
, AF_INET6
)) {
751 log_link_warning(link
, "rtnl: received address message with invalid family, ignoring.");
755 r
= sd_rtnl_message_addr_get_prefixlen(message
, &prefixlen
);
757 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid prefixlen, ignoring: %m");
761 r
= sd_rtnl_message_addr_get_scope(message
, &scope
);
763 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid scope, ignoring: %m");
767 r
= sd_rtnl_message_addr_get_flags(message
, &flags
);
769 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid flags, ignoring: %m");
775 r
= sd_netlink_message_read_in_addr(message
, IFA_LOCAL
, &in_addr
.in
);
777 log_link_warning_errno(link
, r
, "rtnl: received address message without valid address, ignoring: %m");
784 r
= sd_netlink_message_read_in6_addr(message
, IFA_ADDRESS
, &in_addr
.in6
);
786 log_link_warning_errno(link
, r
, "rtnl: received address message without valid address, ignoring: %m");
793 assert_not_reached("Received unsupported address family");
796 r
= in_addr_to_string(family
, &in_addr
, &buf
);
798 log_link_warning_errno(link
, r
, "Could not print address: %m");
800 r
= sd_netlink_message_read_cache_info(message
, IFA_CACHEINFO
, &cinfo
);
801 if (r
< 0 && r
!= -ENODATA
) {
802 log_link_warning_errno(link
, r
, "rtnl: cannot get IFA_CACHEINFO attribute, ignoring: %m");
804 } else if (r
>= 0 && cinfo
.ifa_valid
!= CACHE_INFO_INFINITY_LIFE_TIME
)
805 valid_str
= format_timespan(valid_buf
, FORMAT_TIMESPAN_MAX
,
806 cinfo
.ifa_valid
* USEC_PER_SEC
,
809 (void) address_get(link
, family
, &in_addr
, prefixlen
, &address
);
814 log_link_debug(link
, "Remembering updated address: %s/%u (valid %s%s)",
815 strnull(buf
), prefixlen
,
816 valid_str
? "for " : "forever", strempty(valid_str
));
818 /* An address appeared that we did not request */
819 r
= address_add_foreign(link
, family
, &in_addr
, prefixlen
, &address
);
821 log_link_warning_errno(link
, r
, "Failed to remember foreign address %s/%u, ignoring: %m",
822 strnull(buf
), prefixlen
);
825 log_link_debug(link
, "Remembering foreign address: %s/%u (valid %s%s)",
826 strnull(buf
), prefixlen
,
827 valid_str
? "for " : "forever", strempty(valid_str
));
830 /* address_update() logs internally, so we don't need to. */
831 (void) address_update(address
, flags
, scope
, &cinfo
);
837 log_link_debug(link
, "Forgetting address: %s/%u (valid %s%s)",
838 strnull(buf
), prefixlen
,
839 valid_str
? "for " : "forever", strempty(valid_str
));
840 (void) address_drop(address
);
842 log_link_info(link
, "Kernel removed an address we don't remember: %s/%u (valid %s%s), ignoring.",
843 strnull(buf
), prefixlen
,
844 valid_str
? "for " : "forever", strempty(valid_str
));
849 assert_not_reached("Received invalid RTNL message type");
855 static int manager_rtnl_process_link(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
856 Manager
*m
= userdata
;
858 NetDev
*netdev
= NULL
;
867 if (sd_netlink_message_is_error(message
)) {
868 r
= sd_netlink_message_get_errno(message
);
870 log_warning_errno(r
, "rtnl: Could not receive link message, ignoring: %m");
875 r
= sd_netlink_message_get_type(message
, &type
);
877 log_warning_errno(r
, "rtnl: Could not get message type, ignoring: %m");
879 } else if (!IN_SET(type
, RTM_NEWLINK
, RTM_DELLINK
)) {
880 log_warning("rtnl: Received unexpected message type %u when processing link, ignoring.", type
);
884 r
= sd_rtnl_message_link_get_ifindex(message
, &ifindex
);
886 log_warning_errno(r
, "rtnl: Could not get ifindex from link message, ignoring: %m");
888 } else if (ifindex
<= 0) {
889 log_warning("rtnl: received link message with invalid ifindex %d, ignoring.", ifindex
);
893 r
= sd_netlink_message_read_string(message
, IFLA_IFNAME
, &name
);
895 log_warning_errno(r
, "rtnl: Received link message without ifname, ignoring: %m");
899 (void) link_get(m
, ifindex
, &link
);
900 (void) netdev_get(m
, name
, &netdev
);
905 /* link is new, so add it */
906 r
= link_add(m
, message
, &link
);
908 log_warning_errno(r
, "Could not process new link message, ignoring: %m");
914 /* netdev exists, so make sure the ifindex matches */
915 r
= netdev_set_ifindex(netdev
, message
);
917 log_warning_errno(r
, "Could not process new link message for netdev, ignoring: %m");
922 r
= link_update(link
, message
);
924 log_warning_errno(r
, "Could not process link message, ignoring: %m");
937 assert_not_reached("Received link message with invalid RTNL message type.");
943 int manager_rtnl_process_rule(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
944 _cleanup_(routing_policy_rule_freep
) RoutingPolicyRule
*tmp
= NULL
;
945 _cleanup_free_
char *from
= NULL
, *to
= NULL
;
946 RoutingPolicyRule
*rule
= NULL
;
947 const char *iif
= NULL
, *oif
= NULL
;
948 Manager
*m
= userdata
;
957 if (sd_netlink_message_is_error(message
)) {
958 r
= sd_netlink_message_get_errno(message
);
960 log_warning_errno(r
, "rtnl: failed to receive rule message, ignoring: %m");
965 r
= sd_netlink_message_get_type(message
, &type
);
967 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
969 } else if (!IN_SET(type
, RTM_NEWRULE
, RTM_DELRULE
)) {
970 log_warning("rtnl: received unexpected message type %u when processing rule, ignoring.", type
);
974 r
= routing_policy_rule_new(&tmp
);
980 r
= sd_rtnl_message_get_family(message
, &tmp
->family
);
982 log_warning_errno(r
, "rtnl: could not get rule family, ignoring: %m");
984 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
985 log_debug("rtnl: received rule message with invalid family %d, ignoring.", tmp
->family
);
989 switch (tmp
->family
) {
991 r
= sd_netlink_message_read_in_addr(message
, FRA_SRC
, &tmp
->from
.in
);
992 if (r
< 0 && r
!= -ENODATA
) {
993 log_warning_errno(r
, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
996 r
= sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message
, &tmp
->from_prefixlen
);
998 log_warning_errno(r
, "rtnl: received rule message without valid source prefix length, ignoring: %m");
1003 r
= sd_netlink_message_read_in_addr(message
, FRA_DST
, &tmp
->to
.in
);
1004 if (r
< 0 && r
!= -ENODATA
) {
1005 log_warning_errno(r
, "rtnl: could not get FRA_DST attribute, ignoring: %m");
1007 } else if (r
>= 0) {
1008 r
= sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message
, &tmp
->to_prefixlen
);
1010 log_warning_errno(r
, "rtnl: received rule message without valid destination prefix length, ignoring: %m");
1018 r
= sd_netlink_message_read_in6_addr(message
, FRA_SRC
, &tmp
->from
.in6
);
1019 if (r
< 0 && r
!= -ENODATA
) {
1020 log_warning_errno(r
, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
1022 } else if (r
>= 0) {
1023 r
= sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message
, &tmp
->from_prefixlen
);
1025 log_warning_errno(r
, "rtnl: received rule message without valid source prefix length, ignoring: %m");
1030 r
= sd_netlink_message_read_in6_addr(message
, FRA_DST
, &tmp
->to
.in6
);
1031 if (r
< 0 && r
!= -ENODATA
) {
1032 log_warning_errno(r
, "rtnl: could not get FRA_DST attribute, ignoring: %m");
1034 } else if (r
>= 0) {
1035 r
= sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message
, &tmp
->to_prefixlen
);
1037 log_warning_errno(r
, "rtnl: received rule message without valid destination prefix length, ignoring: %m");
1045 assert_not_reached("Received rule message with unsupported address family");
1048 if (tmp
->from_prefixlen
== 0 && tmp
->to_prefixlen
== 0)
1051 r
= sd_rtnl_message_routing_policy_rule_get_flags(message
, &flags
);
1053 log_warning_errno(r
, "rtnl: received rule message without valid flag, ignoring: %m");
1056 tmp
->invert_rule
= flags
& FIB_RULE_INVERT
;
1058 r
= sd_netlink_message_read_u32(message
, FRA_FWMARK
, &tmp
->fwmark
);
1059 if (r
< 0 && r
!= -ENODATA
) {
1060 log_warning_errno(r
, "rtnl: could not get FRA_FWMARK attribute, ignoring: %m");
1064 r
= sd_netlink_message_read_u32(message
, FRA_FWMASK
, &tmp
->fwmask
);
1065 if (r
< 0 && r
!= -ENODATA
) {
1066 log_warning_errno(r
, "rtnl: could not get FRA_FWMASK attribute, ignoring: %m");
1070 r
= sd_netlink_message_read_u32(message
, FRA_PRIORITY
, &tmp
->priority
);
1071 if (r
< 0 && r
!= -ENODATA
) {
1072 log_warning_errno(r
, "rtnl: could not get FRA_PRIORITY attribute, ignoring: %m");
1076 r
= sd_netlink_message_read_u32(message
, FRA_TABLE
, &tmp
->table
);
1077 if (r
< 0 && r
!= -ENODATA
) {
1078 log_warning_errno(r
, "rtnl: could not get FRA_TABLE attribute, ignoring: %m");
1082 r
= sd_rtnl_message_routing_policy_rule_get_tos(message
, &tmp
->tos
);
1083 if (r
< 0 && r
!= -ENODATA
) {
1084 log_warning_errno(r
, "rtnl: could not get ip rule TOS, ignoring: %m");
1088 r
= sd_netlink_message_read_string(message
, FRA_IIFNAME
, &iif
);
1089 if (r
< 0 && r
!= -ENODATA
) {
1090 log_warning_errno(r
, "rtnl: could not get FRA_IIFNAME attribute, ignoring: %m");
1093 r
= free_and_strdup(&tmp
->iif
, iif
);
1097 r
= sd_netlink_message_read_string(message
, FRA_OIFNAME
, &oif
);
1098 if (r
< 0 && r
!= -ENODATA
) {
1099 log_warning_errno(r
, "rtnl: could not get FRA_OIFNAME attribute, ignoring: %m");
1102 r
= free_and_strdup(&tmp
->oif
, oif
);
1106 r
= sd_netlink_message_read_u8(message
, FRA_IP_PROTO
, &tmp
->protocol
);
1107 if (r
< 0 && r
!= -ENODATA
) {
1108 log_warning_errno(r
, "rtnl: could not get FRA_IP_PROTO attribute, ignoring: %m");
1112 r
= sd_netlink_message_read(message
, FRA_SPORT_RANGE
, sizeof(tmp
->sport
), &tmp
->sport
);
1113 if (r
< 0 && r
!= -ENODATA
) {
1114 log_warning_errno(r
, "rtnl: could not get FRA_SPORT_RANGE attribute, ignoring: %m");
1118 r
= sd_netlink_message_read(message
, FRA_DPORT_RANGE
, sizeof(tmp
->dport
), &tmp
->dport
);
1119 if (r
< 0 && r
!= -ENODATA
) {
1120 log_warning_errno(r
, "rtnl: could not get FRA_DPORT_RANGE attribute, ignoring: %m");
1124 (void) routing_policy_rule_get(m
, tmp
, &rule
);
1126 if (DEBUG_LOGGING
) {
1127 (void) in_addr_to_string(tmp
->family
, &tmp
->from
, &from
);
1128 (void) in_addr_to_string(tmp
->family
, &tmp
->to
, &to
);
1134 log_debug("Remembering foreign routing policy rule: %s/%u -> %s/%u, iif: %s, oif: %s, table: %u",
1135 from
, tmp
->from_prefixlen
, to
, tmp
->to_prefixlen
, strna(tmp
->iif
), strna(tmp
->oif
), tmp
->table
);
1136 r
= routing_policy_rule_add_foreign(m
, tmp
, &rule
);
1138 log_warning_errno(r
, "Could not remember foreign rule, ignoring: %m");
1144 log_debug("Forgetting routing policy rule: %s/%u -> %s/%u, iif: %s, oif: %s, table: %u",
1145 from
, tmp
->from_prefixlen
, to
, tmp
->to_prefixlen
, strna(tmp
->iif
), strna(tmp
->oif
), tmp
->table
);
1146 routing_policy_rule_free(rule
);
1151 assert_not_reached("Received invalid RTNL message type");
1157 int manager_rtnl_process_nexthop(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
1158 _cleanup_(nexthop_freep
) NextHop
*tmp
= NULL
;
1159 _cleanup_free_
char *gateway
= NULL
;
1160 NextHop
*nexthop
= NULL
;
1161 Manager
*m
= userdata
;
1170 if (sd_netlink_message_is_error(message
)) {
1171 r
= sd_netlink_message_get_errno(message
);
1173 log_warning_errno(r
, "rtnl: failed to receive rule message, ignoring: %m");
1178 r
= sd_netlink_message_get_type(message
, &type
);
1180 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
1182 } else if (!IN_SET(type
, RTM_NEWNEXTHOP
, RTM_DELNEXTHOP
)) {
1183 log_warning("rtnl: received unexpected message type %u when processing nexthop, ignoring.", type
);
1187 r
= nexthop_new(&tmp
);
1191 r
= sd_rtnl_message_get_family(message
, &tmp
->family
);
1193 log_warning_errno(r
, "rtnl: could not get nexthop family, ignoring: %m");
1195 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
1196 log_debug("rtnl: received nexthop message with invalid family %d, ignoring.", tmp
->family
);
1200 switch (tmp
->family
) {
1202 r
= sd_netlink_message_read_in_addr(message
, NHA_GATEWAY
, &tmp
->gw
.in
);
1203 if (r
< 0 && r
!= -ENODATA
) {
1204 log_warning_errno(r
, "rtnl: could not get NHA_GATEWAY attribute, ignoring: %m");
1210 r
= sd_netlink_message_read_in6_addr(message
, NHA_GATEWAY
, &tmp
->gw
.in6
);
1211 if (r
< 0 && r
!= -ENODATA
) {
1212 log_warning_errno(r
, "rtnl: could not get NHA_GATEWAY attribute, ignoring: %m");
1218 assert_not_reached("Received rule message with unsupported address family");
1221 r
= sd_netlink_message_read_u32(message
, NHA_ID
, &tmp
->id
);
1222 if (r
< 0 && r
!= -ENODATA
) {
1223 log_warning_errno(r
, "rtnl: could not get NHA_ID attribute, ignoring: %m");
1227 r
= sd_netlink_message_read_u32(message
, NHA_OIF
, &tmp
->oif
);
1228 if (r
< 0 && r
!= -ENODATA
) {
1229 log_warning_errno(r
, "rtnl: could not get NHA_OIF attribute, ignoring: %m");
1233 r
= link_get(m
, tmp
->oif
, &link
);
1234 if (r
< 0 || !link
) {
1235 if (!m
->enumerating
)
1236 log_warning("rtnl: received nexthop message for link (%d) we do not know about, ignoring", tmp
->oif
);
1240 (void) nexthop_get(link
, tmp
, &nexthop
);
1243 (void) in_addr_to_string(tmp
->family
, &tmp
->gw
, &gateway
);
1246 case RTM_NEWNEXTHOP
:
1248 log_debug("Remembering foreign nexthop: %s, oif: %d, id: %d", gateway
, tmp
->oif
, tmp
->id
);
1249 r
= nexthop_add_foreign(link
, tmp
, &nexthop
);
1251 log_warning_errno(r
, "Could not remember foreign nexthop, ignoring: %m");
1256 case RTM_DELNEXTHOP
:
1257 log_debug("Forgetting foreign nexthop: %s, oif: %d, id: %d", gateway
, tmp
->oif
, tmp
->id
);
1258 nexthop_free(nexthop
);
1263 assert_not_reached("Received invalid RTNL message type");
1269 static int systemd_netlink_fd(void) {
1270 int n
, fd
, rtnl_fd
= -EINVAL
;
1272 n
= sd_listen_fds(true);
1276 for (fd
= SD_LISTEN_FDS_START
; fd
< SD_LISTEN_FDS_START
+ n
; fd
++) {
1277 if (sd_is_socket(fd
, AF_NETLINK
, SOCK_RAW
, -1) > 0) {
1288 static int manager_connect_genl(Manager
*m
) {
1293 r
= sd_genl_socket_open(&m
->genl
);
1297 r
= sd_netlink_inc_rcvbuf(m
->genl
, RCVBUF_SIZE
);
1301 r
= sd_netlink_attach_event(m
->genl
, m
->event
, 0);
1308 static int manager_connect_rtnl(Manager
*m
) {
1313 fd
= systemd_netlink_fd();
1315 r
= sd_netlink_open(&m
->rtnl
);
1317 r
= sd_netlink_open_fd(&m
->rtnl
, fd
);
1321 r
= sd_netlink_inc_rcvbuf(m
->rtnl
, RCVBUF_SIZE
);
1325 r
= sd_netlink_attach_event(m
->rtnl
, m
->event
, 0);
1329 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWLINK
, &manager_rtnl_process_link
, NULL
, m
, "network-rtnl_process_link");
1333 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELLINK
, &manager_rtnl_process_link
, NULL
, m
, "network-rtnl_process_link");
1337 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWADDR
, &manager_rtnl_process_address
, NULL
, m
, "network-rtnl_process_address");
1341 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELADDR
, &manager_rtnl_process_address
, NULL
, m
, "network-rtnl_process_address");
1345 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWNEIGH
, &manager_rtnl_process_neighbor
, NULL
, m
, "network-rtnl_process_neighbor");
1349 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELNEIGH
, &manager_rtnl_process_neighbor
, NULL
, m
, "network-rtnl_process_neighbor");
1353 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWROUTE
, &manager_rtnl_process_route
, NULL
, m
, "network-rtnl_process_route");
1357 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELROUTE
, &manager_rtnl_process_route
, NULL
, m
, "network-rtnl_process_route");
1361 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWRULE
, &manager_rtnl_process_rule
, NULL
, m
, "network-rtnl_process_rule");
1365 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELRULE
, &manager_rtnl_process_rule
, NULL
, m
, "network-rtnl_process_rule");
1369 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWNEXTHOP
, &manager_rtnl_process_nexthop
, NULL
, m
, "network-rtnl_process_nexthop");
1373 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELNEXTHOP
, &manager_rtnl_process_nexthop
, NULL
, m
, "network-rtnl_process_nexthop");
1380 static int ordered_set_put_in_addr_data(OrderedSet
*s
, const struct in_addr_data
*address
) {
1387 r
= in_addr_to_string(address
->family
, &address
->address
, &p
);
1391 r
= ordered_set_consume(s
, p
);
1398 static int ordered_set_put_in_addr_datav(OrderedSet
*s
, const struct in_addr_data
*addresses
, unsigned n
) {
1403 assert(addresses
|| n
== 0);
1405 for (i
= 0; i
< n
; i
++) {
1406 r
= ordered_set_put_in_addr_data(s
, addresses
+i
);
1416 static int ordered_set_put_in4_addr(OrderedSet
*s
, const struct in_addr
*address
) {
1423 r
= in_addr_to_string(AF_INET
, (const union in_addr_union
*) address
, &p
);
1427 r
= ordered_set_consume(s
, p
);
1434 static int ordered_set_put_in4_addrv(OrderedSet
*s
,
1435 const struct in_addr
*addresses
,
1437 bool (*predicate
)(const struct in_addr
*addr
)) {
1442 assert(n
== 0 || addresses
);
1444 for (i
= 0; i
< n
; i
++) {
1445 if (predicate
&& !predicate(&addresses
[i
]))
1447 r
= ordered_set_put_in4_addr(s
, addresses
+i
);
1457 static int manager_save(Manager
*m
) {
1458 _cleanup_ordered_set_free_free_ OrderedSet
*dns
= NULL
, *ntp
= NULL
, *sip
= NULL
, *search_domains
= NULL
, *route_domains
= NULL
;
1459 const char *operstate_str
, *carrier_state_str
, *address_state_str
;
1460 LinkOperationalState operstate
= LINK_OPERSTATE_OFF
;
1461 LinkCarrierState carrier_state
= LINK_CARRIER_STATE_OFF
;
1462 LinkAddressState address_state
= LINK_ADDRESS_STATE_OFF
;
1463 _cleanup_free_
char *temp_path
= NULL
;
1464 _cleanup_strv_free_
char **p
= NULL
;
1465 _cleanup_fclose_
FILE *f
= NULL
;
1471 assert(m
->state_file
);
1473 /* We add all NTP and DNS server to a set, to filter out duplicates */
1474 dns
= ordered_set_new(&string_hash_ops
);
1478 ntp
= ordered_set_new(&string_hash_ops
);
1482 sip
= ordered_set_new(&string_hash_ops
);
1486 search_domains
= ordered_set_new(&dns_name_hash_ops
);
1487 if (!search_domains
)
1490 route_domains
= ordered_set_new(&dns_name_hash_ops
);
1494 HASHMAP_FOREACH(link
, m
->links
, i
) {
1495 if (link
->flags
& IFF_LOOPBACK
)
1498 if (link
->operstate
> operstate
)
1499 operstate
= link
->operstate
;
1501 if (link
->carrier_state
> carrier_state
)
1502 carrier_state
= link
->carrier_state
;
1504 if (link
->address_state
> address_state
)
1505 address_state
= link
->address_state
;
1510 /* First add the static configured entries */
1511 r
= ordered_set_put_in_addr_datav(dns
, link
->network
->dns
, link
->network
->n_dns
);
1515 r
= ordered_set_put_strdupv(ntp
, link
->ntp
?: link
->network
->ntp
);
1519 r
= ordered_set_put_string_set(search_domains
, link
->search_domains
?: link
->network
->search_domains
);
1523 r
= ordered_set_put_string_set(route_domains
, link
->route_domains
?: link
->network
->route_domains
);
1527 if (!link
->dhcp_lease
)
1530 /* Secondly, add the entries acquired via DHCP */
1531 if (link
->network
->dhcp_use_dns
) {
1532 const struct in_addr
*addresses
;
1534 r
= sd_dhcp_lease_get_dns(link
->dhcp_lease
, &addresses
);
1536 r
= ordered_set_put_in4_addrv(dns
, addresses
, r
, in4_addr_is_non_local
);
1539 } else if (r
< 0 && r
!= -ENODATA
)
1543 if (link
->network
->dhcp_use_ntp
) {
1544 const struct in_addr
*addresses
;
1546 r
= sd_dhcp_lease_get_ntp(link
->dhcp_lease
, &addresses
);
1548 r
= ordered_set_put_in4_addrv(ntp
, addresses
, r
, in4_addr_is_non_local
);
1551 } else if (r
< 0 && r
!= -ENODATA
)
1555 if (link
->network
->dhcp_use_sip
) {
1556 const struct in_addr
*addresses
;
1558 r
= sd_dhcp_lease_get_sip(link
->dhcp_lease
, &addresses
);
1560 r
= ordered_set_put_in4_addrv(sip
, addresses
, r
, in4_addr_is_non_local
);
1563 } else if (r
< 0 && r
!= -ENODATA
)
1567 if (link
->network
->dhcp_use_domains
!= DHCP_USE_DOMAINS_NO
) {
1568 const char *domainname
;
1569 char **domains
= NULL
;
1571 OrderedSet
*target_domains
= (link
->network
->dhcp_use_domains
== DHCP_USE_DOMAINS_YES
) ? search_domains
: route_domains
;
1572 r
= sd_dhcp_lease_get_domainname(link
->dhcp_lease
, &domainname
);
1574 r
= ordered_set_put_strdup(target_domains
, domainname
);
1577 } else if (r
!= -ENODATA
)
1580 r
= sd_dhcp_lease_get_search_domains(link
->dhcp_lease
, &domains
);
1582 r
= ordered_set_put_strdupv(target_domains
, domains
);
1585 } else if (r
!= -ENODATA
)
1590 if (carrier_state
>= LINK_CARRIER_STATE_ENSLAVED
)
1591 carrier_state
= LINK_CARRIER_STATE_CARRIER
;
1593 operstate_str
= link_operstate_to_string(operstate
);
1594 assert(operstate_str
);
1596 carrier_state_str
= link_carrier_state_to_string(carrier_state
);
1597 assert(carrier_state_str
);
1599 address_state_str
= link_address_state_to_string(address_state
);
1600 assert(address_state_str
);
1602 r
= fopen_temporary(m
->state_file
, &f
, &temp_path
);
1606 (void) fchmod(fileno(f
), 0644);
1609 "# This is private data. Do not parse.\n"
1611 "CARRIER_STATE=%s\n"
1612 "ADDRESS_STATE=%s\n",
1613 operstate_str
, carrier_state_str
, address_state_str
);
1615 ordered_set_print(f
, "DNS=", dns
);
1616 ordered_set_print(f
, "NTP=", ntp
);
1617 ordered_set_print(f
, "SIP=", sip
);
1618 ordered_set_print(f
, "DOMAINS=", search_domains
);
1619 ordered_set_print(f
, "ROUTE_DOMAINS=", route_domains
);
1621 r
= routing_policy_serialize_rules(m
->rules
, f
);
1625 r
= fflush_and_check(f
);
1629 if (rename(temp_path
, m
->state_file
) < 0) {
1634 if (m
->operational_state
!= operstate
) {
1635 m
->operational_state
= operstate
;
1636 if (strv_extend(&p
, "OperationalState") < 0)
1640 if (m
->carrier_state
!= carrier_state
) {
1641 m
->carrier_state
= carrier_state
;
1642 if (strv_extend(&p
, "CarrierState") < 0)
1646 if (m
->address_state
!= address_state
) {
1647 m
->address_state
= address_state
;
1648 if (strv_extend(&p
, "AddressState") < 0)
1653 r
= manager_send_changed_strv(m
, p
);
1655 log_error_errno(r
, "Could not emit changed properties: %m");
1663 (void) unlink(m
->state_file
);
1664 (void) unlink(temp_path
);
1666 return log_error_errno(r
, "Failed to save network state to %s: %m", m
->state_file
);
1669 static int manager_dirty_handler(sd_event_source
*s
, void *userdata
) {
1670 Manager
*m
= userdata
;
1679 SET_FOREACH(link
, m
->dirty_links
, i
)
1680 if (link_save(link
) >= 0)
1686 static int signal_terminate_callback(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
1687 Manager
*m
= userdata
;
1690 m
->restarting
= false;
1692 log_debug("Terminate operation initiated.");
1694 return sd_event_exit(sd_event_source_get_event(s
), 0);
1697 static int signal_restart_callback(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
1698 Manager
*m
= userdata
;
1701 m
->restarting
= true;
1703 log_debug("Restart operation initiated.");
1705 return sd_event_exit(sd_event_source_get_event(s
), 0);
1708 int manager_new(Manager
**ret
) {
1709 _cleanup_(manager_freep
) Manager
*m
= NULL
;
1712 m
= new(Manager
, 1);
1717 .speed_meter_interval_usec
= SPEED_METER_DEFAULT_TIME_INTERVAL
,
1720 m
->state_file
= strdup("/run/systemd/netif/state");
1724 r
= sd_event_default(&m
->event
);
1728 assert_se(sigprocmask_many(SIG_SETMASK
, NULL
, SIGINT
, SIGTERM
, SIGUSR2
, -1) >= 0);
1730 (void) sd_event_set_watchdog(m
->event
, true);
1731 (void) sd_event_add_signal(m
->event
, NULL
, SIGTERM
, signal_terminate_callback
, m
);
1732 (void) sd_event_add_signal(m
->event
, NULL
, SIGINT
, signal_terminate_callback
, m
);
1733 (void) sd_event_add_signal(m
->event
, NULL
, SIGUSR2
, signal_restart_callback
, m
);
1735 r
= sd_event_add_post(m
->event
, NULL
, manager_dirty_handler
, m
);
1739 r
= manager_connect_rtnl(m
);
1743 r
= manager_connect_genl(m
);
1747 r
= manager_connect_udev(m
);
1751 r
= sd_resolve_default(&m
->resolve
);
1755 r
= sd_resolve_attach_event(m
->resolve
, m
->event
, 0);
1759 r
= setup_default_address_pool(m
);
1763 m
->duid
.type
= DUID_TYPE_EN
;
1765 (void) routing_policy_load_rules(m
->state_file
, &m
->rules_saved
);
1772 void manager_free(Manager
*m
) {
1780 free(m
->state_file
);
1782 while ((a
= hashmap_first_key(m
->dhcp6_prefixes
)))
1783 (void) dhcp6_prefix_remove(m
, a
);
1784 m
->dhcp6_prefixes
= hashmap_free(m
->dhcp6_prefixes
);
1786 while ((link
= hashmap_steal_first(m
->links
))) {
1787 if (link
->dhcp6_client
)
1788 (void) dhcp6_lease_pd_prefix_lost(link
->dhcp6_client
, link
);
1790 (void) link_stop_clients(link
, true);
1795 m
->dirty_links
= set_free_with_destructor(m
->dirty_links
, link_unref
);
1796 m
->links_requesting_uuid
= set_free_with_destructor(m
->links_requesting_uuid
, link_unref
);
1797 m
->links
= hashmap_free_with_destructor(m
->links
, link_unref
);
1799 m
->duids_requesting_uuid
= set_free(m
->duids_requesting_uuid
);
1800 m
->networks
= ordered_hashmap_free_with_destructor(m
->networks
, network_unref
);
1802 m
->netdevs
= hashmap_free_with_destructor(m
->netdevs
, netdev_unref
);
1804 while ((pool
= m
->address_pools
))
1805 address_pool_free(pool
);
1807 /* routing_policy_rule_free() access m->rules and m->rules_foreign.
1808 * So, it is necessary to set NULL after the sets are freed. */
1809 m
->rules
= set_free_with_destructor(m
->rules
, routing_policy_rule_free
);
1810 m
->rules_foreign
= set_free_with_destructor(m
->rules_foreign
, routing_policy_rule_free
);
1811 set_free_with_destructor(m
->rules_saved
, routing_policy_rule_free
);
1813 sd_netlink_unref(m
->rtnl
);
1814 sd_netlink_unref(m
->genl
);
1815 sd_resolve_unref(m
->resolve
);
1817 sd_event_source_unref(m
->speed_meter_event_source
);
1818 sd_event_unref(m
->event
);
1820 sd_device_monitor_unref(m
->device_monitor
);
1822 bus_verify_polkit_async_registry_free(m
->polkit_registry
);
1823 sd_bus_flush_close_unref(m
->bus
);
1825 free(m
->dynamic_timezone
);
1826 free(m
->dynamic_hostname
);
1831 int manager_start(Manager
*m
) {
1838 r
= manager_start_speed_meter(m
);
1840 return log_error_errno(r
, "Failed to initialize speed meter: %m");
1842 /* The dirty handler will deal with future serialization, but the first one
1843 must be done explicitly. */
1847 HASHMAP_FOREACH(link
, m
->links
, i
)
1853 int manager_load_config(Manager
*m
) {
1856 /* update timestamp */
1857 paths_check_timestamp(NETWORK_DIRS
, &m
->network_dirs_ts_usec
, true);
1863 r
= network_load(m
, &m
->networks
);
1870 bool manager_should_reload(Manager
*m
) {
1871 return paths_check_timestamp(NETWORK_DIRS
, &m
->network_dirs_ts_usec
, false);
1874 int manager_rtnl_enumerate_links(Manager
*m
) {
1875 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1876 sd_netlink_message
*link
;
1882 r
= sd_rtnl_message_new_link(m
->rtnl
, &req
, RTM_GETLINK
, 0);
1886 r
= sd_netlink_message_request_dump(req
, true);
1890 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1894 for (link
= reply
; link
; link
= sd_netlink_message_next(link
)) {
1897 m
->enumerating
= true;
1899 k
= manager_rtnl_process_link(m
->rtnl
, link
, m
);
1903 m
->enumerating
= false;
1909 int manager_rtnl_enumerate_addresses(Manager
*m
) {
1910 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1911 sd_netlink_message
*addr
;
1917 r
= sd_rtnl_message_new_addr(m
->rtnl
, &req
, RTM_GETADDR
, 0, 0);
1921 r
= sd_netlink_message_request_dump(req
, true);
1925 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1929 for (addr
= reply
; addr
; addr
= sd_netlink_message_next(addr
)) {
1932 m
->enumerating
= true;
1934 k
= manager_rtnl_process_address(m
->rtnl
, addr
, m
);
1938 m
->enumerating
= false;
1944 int manager_rtnl_enumerate_neighbors(Manager
*m
) {
1945 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1946 sd_netlink_message
*neigh
;
1952 r
= sd_rtnl_message_new_neigh(m
->rtnl
, &req
, RTM_GETNEIGH
, 0, AF_UNSPEC
);
1956 r
= sd_netlink_message_request_dump(req
, true);
1960 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1964 for (neigh
= reply
; neigh
; neigh
= sd_netlink_message_next(neigh
)) {
1967 m
->enumerating
= true;
1969 k
= manager_rtnl_process_neighbor(m
->rtnl
, neigh
, m
);
1973 m
->enumerating
= false;
1979 int manager_rtnl_enumerate_routes(Manager
*m
) {
1980 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1981 sd_netlink_message
*route
;
1987 r
= sd_rtnl_message_new_route(m
->rtnl
, &req
, RTM_GETROUTE
, 0, 0);
1991 r
= sd_netlink_message_request_dump(req
, true);
1995 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1999 for (route
= reply
; route
; route
= sd_netlink_message_next(route
)) {
2002 m
->enumerating
= true;
2004 k
= manager_rtnl_process_route(m
->rtnl
, route
, m
);
2008 m
->enumerating
= false;
2014 int manager_rtnl_enumerate_rules(Manager
*m
) {
2015 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2016 sd_netlink_message
*rule
;
2022 r
= sd_rtnl_message_new_routing_policy_rule(m
->rtnl
, &req
, RTM_GETRULE
, 0);
2026 r
= sd_netlink_message_request_dump(req
, true);
2030 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2032 if (r
== -EOPNOTSUPP
) {
2033 log_debug("FIB Rules are not supported by the kernel. Ignoring.");
2040 for (rule
= reply
; rule
; rule
= sd_netlink_message_next(rule
)) {
2043 m
->enumerating
= true;
2045 k
= manager_rtnl_process_rule(m
->rtnl
, rule
, m
);
2049 m
->enumerating
= false;
2055 int manager_rtnl_enumerate_nexthop(Manager
*m
) {
2056 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2057 sd_netlink_message
*nexthop
;
2063 r
= sd_rtnl_message_new_nexthop(m
->rtnl
, &req
, RTM_GETNEXTHOP
, 0, 0);
2067 r
= sd_netlink_message_request_dump(req
, true);
2071 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2073 if (r
== -EOPNOTSUPP
) {
2074 log_debug("Nexthop are not supported by the kernel. Ignoring.");
2081 for (nexthop
= reply
; nexthop
; nexthop
= sd_netlink_message_next(nexthop
)) {
2084 m
->enumerating
= true;
2086 k
= manager_rtnl_process_nexthop(m
->rtnl
, nexthop
, m
);
2090 m
->enumerating
= false;
2096 int manager_address_pool_acquire(Manager
*m
, int family
, unsigned prefixlen
, union in_addr_union
*found
) {
2101 assert(prefixlen
> 0);
2104 LIST_FOREACH(address_pools
, p
, m
->address_pools
) {
2105 if (p
->family
!= family
)
2108 r
= address_pool_acquire(p
, prefixlen
, found
);
2116 Link
* manager_find_uplink(Manager
*m
, Link
*exclude
) {
2117 _cleanup_free_
struct local_address
*gateways
= NULL
;
2122 /* Looks for a suitable "uplink", via black magic: an
2123 * interface that is up and where the default route with the
2124 * highest priority points to. */
2126 n
= local_gateways(m
->rtnl
, 0, AF_UNSPEC
, &gateways
);
2128 log_warning_errno(n
, "Failed to determine list of default gateways: %m");
2132 for (i
= 0; i
< n
; i
++) {
2135 link
= hashmap_get(m
->links
, INT_TO_PTR(gateways
[i
].ifindex
));
2137 log_debug("Weird, found a gateway for a link we don't know. Ignoring.");
2141 if (link
== exclude
)
2144 if (link
->operstate
< LINK_OPERSTATE_ROUTABLE
)
2153 void manager_dirty(Manager
*manager
) {
2156 /* the serialized state in /run is no longer up-to-date */
2157 manager
->dirty
= true;
2160 static int set_hostname_handler(sd_bus_message
*m
, void *userdata
, sd_bus_error
*ret_error
) {
2161 Manager
*manager
= userdata
;
2162 const sd_bus_error
*e
;
2167 e
= sd_bus_message_get_error(m
);
2169 log_warning_errno(sd_bus_error_get_errno(e
), "Could not set hostname: %s", e
->message
);
2174 int manager_set_hostname(Manager
*m
, const char *hostname
) {
2177 log_debug("Setting transient hostname: '%s'", strna(hostname
));
2179 if (free_and_strdup(&m
->dynamic_hostname
, hostname
) < 0)
2182 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2183 log_debug("Not connected to system bus, setting hostname later.");
2187 r
= sd_bus_call_method_async(
2190 "org.freedesktop.hostname1",
2191 "/org/freedesktop/hostname1",
2192 "org.freedesktop.hostname1",
2194 set_hostname_handler
,
2201 return log_error_errno(r
, "Could not set transient hostname: %m");
2206 static int set_timezone_handler(sd_bus_message
*m
, void *userdata
, sd_bus_error
*ret_error
) {
2207 Manager
*manager
= userdata
;
2208 const sd_bus_error
*e
;
2213 e
= sd_bus_message_get_error(m
);
2215 log_warning_errno(sd_bus_error_get_errno(e
), "Could not set timezone: %s", e
->message
);
2220 int manager_set_timezone(Manager
*m
, const char *tz
) {
2226 log_debug("Setting system timezone: '%s'", tz
);
2227 if (free_and_strdup(&m
->dynamic_timezone
, tz
) < 0)
2230 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2231 log_debug("Not connected to system bus, setting timezone later.");
2235 r
= sd_bus_call_method_async(
2238 "org.freedesktop.timedate1",
2239 "/org/freedesktop/timedate1",
2240 "org.freedesktop.timedate1",
2242 set_timezone_handler
,
2248 return log_error_errno(r
, "Could not set timezone: %m");
2253 int manager_request_product_uuid(Manager
*m
, Link
*link
) {
2258 if (m
->has_product_uuid
)
2261 log_debug("Requesting product UUID");
2266 assert_se(duid
= link_get_duid(link
));
2268 r
= set_ensure_allocated(&m
->links_requesting_uuid
, NULL
);
2272 r
= set_ensure_allocated(&m
->duids_requesting_uuid
, NULL
);
2276 r
= set_put(m
->links_requesting_uuid
, link
);
2280 r
= set_put(m
->duids_requesting_uuid
, duid
);
2287 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2288 log_debug("Not connected to system bus, requesting product UUID later.");
2292 r
= sd_bus_call_method_async(
2295 "org.freedesktop.hostname1",
2296 "/org/freedesktop/hostname1",
2297 "org.freedesktop.hostname1",
2299 get_product_uuid_handler
,
2304 return log_warning_errno(r
, "Failed to get product UUID: %m");