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"
14 #include "bus-polkit.h"
16 #include "conf-parser.h"
18 #include "device-private.h"
19 #include "device-util.h"
20 #include "dns-domain.h"
23 #include "local-addresses.h"
24 #include "netlink-util.h"
25 #include "network-internal.h"
26 #include "networkd-dhcp6.h"
27 #include "networkd-link-bus.h"
28 #include "networkd-manager-bus.h"
29 #include "networkd-manager.h"
30 #include "networkd-network-bus.h"
31 #include "networkd-speed-meter.h"
32 #include "ordered-set.h"
33 #include "path-util.h"
35 #include "signal-util.h"
37 #include "sysctl-util.h"
38 #include "tmpfile-util.h"
39 #include "udev-util.h"
42 /* use 128 MB for receive socket kernel queue. */
43 #define RCVBUF_SIZE (128*1024*1024)
45 static int log_message_warning_errno(sd_netlink_message
*m
, int err
, const char *msg
) {
46 const char *err_msg
= NULL
;
48 (void) sd_netlink_message_read_string(m
, NLMSGERR_ATTR_MSG
, &err_msg
);
49 return log_warning_errno(err
, "%s: %s%s%m", msg
, strempty(err_msg
), err_msg
? " " : "");
52 static int setup_default_address_pool(Manager
*m
) {
58 /* Add in the well-known private address ranges. */
60 r
= address_pool_new_from_string(m
, &p
, AF_INET6
, "fd00::", 8);
64 r
= address_pool_new_from_string(m
, &p
, AF_INET
, "10.0.0.0", 8);
68 r
= address_pool_new_from_string(m
, &p
, AF_INET
, "172.16.0.0", 12);
72 r
= address_pool_new_from_string(m
, &p
, AF_INET
, "192.168.0.0", 16);
79 static int manager_reset_all(Manager
*m
) {
86 HASHMAP_FOREACH(link
, m
->links
, i
) {
87 r
= link_carrier_reset(link
);
89 log_link_warning_errno(link
, r
, "Could not reset carrier: %m");
95 static int match_prepare_for_sleep(sd_bus_message
*message
, void *userdata
, sd_bus_error
*ret_error
) {
96 Manager
*m
= userdata
;
102 r
= sd_bus_message_read(message
, "b", &b
);
104 log_debug_errno(r
, "Failed to parse PrepareForSleep signal: %m");
111 log_debug("Coming back from suspend, resetting all connections...");
113 (void) manager_reset_all(m
);
118 static int on_connected(sd_bus_message
*message
, void *userdata
, sd_bus_error
*ret_error
) {
119 Manager
*m
= userdata
;
124 /* Did we get a timezone or transient hostname from DHCP while D-Bus wasn't up yet? */
125 if (m
->dynamic_hostname
)
126 (void) manager_set_hostname(m
, m
->dynamic_hostname
);
127 if (m
->dynamic_timezone
)
128 (void) manager_set_timezone(m
, m
->dynamic_timezone
);
129 if (m
->links_requesting_uuid
)
130 (void) manager_request_product_uuid(m
, NULL
);
135 int manager_connect_bus(Manager
*m
) {
143 r
= bus_open_system_watch_bind_with_description(&m
->bus
, "bus-api-network");
145 return log_error_errno(r
, "Failed to connect to bus: %m");
147 r
= sd_bus_add_object_vtable(m
->bus
, NULL
, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", manager_vtable
, m
);
149 return log_error_errno(r
, "Failed to add manager object vtable: %m");
151 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link", link_vtable
, link_object_find
, m
);
153 return log_error_errno(r
, "Failed to add link object vtable: %m");
155 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/network1/link", link_node_enumerator
, m
);
157 return log_error_errno(r
, "Failed to add link enumerator: %m");
159 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable
, network_object_find
, m
);
161 return log_error_errno(r
, "Failed to add network object vtable: %m");
163 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/network1/network", network_node_enumerator
, m
);
165 return log_error_errno(r
, "Failed to add network enumerator: %m");
167 r
= sd_bus_request_name_async(m
->bus
, NULL
, "org.freedesktop.network1", 0, NULL
, NULL
);
169 return log_error_errno(r
, "Failed to request name: %m");
171 r
= sd_bus_attach_event(m
->bus
, m
->event
, 0);
173 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
175 r
= sd_bus_match_signal_async(
178 "org.freedesktop.DBus.Local",
180 "org.freedesktop.DBus.Local",
182 on_connected
, NULL
, m
);
184 return log_error_errno(r
, "Failed to request match on Connected signal: %m");
186 r
= sd_bus_match_signal_async(
189 "org.freedesktop.login1",
190 "/org/freedesktop/login1",
191 "org.freedesktop.login1.Manager",
193 match_prepare_for_sleep
, NULL
, m
);
195 log_warning_errno(r
, "Failed to request match for PrepareForSleep, ignoring: %m");
200 static int manager_udev_process_link(sd_device_monitor
*monitor
, sd_device
*device
, void *userdata
) {
201 Manager
*m
= userdata
;
209 r
= device_get_action(device
, &action
);
211 log_device_debug_errno(device
, r
, "Failed to get udev action, ignoring device: %m");
215 if (!IN_SET(action
, DEVICE_ACTION_ADD
, DEVICE_ACTION_CHANGE
, DEVICE_ACTION_MOVE
)) {
216 log_device_debug(device
, "Ignoring udev %s event for device.", device_action_to_string(action
));
220 r
= sd_device_get_ifindex(device
, &ifindex
);
222 log_device_debug_errno(device
, r
, "Ignoring udev ADD event for device without ifindex or with invalid ifindex: %m");
226 r
= device_is_renaming(device
);
228 log_device_error_errno(device
, r
, "Failed to determine the device is renamed or not, ignoring '%s' uevent: %m",
229 device_action_to_string(action
));
233 log_device_debug(device
, "Interface is under renaming, wait for the interface to be renamed: %m");
237 r
= link_get(m
, ifindex
, &link
);
240 log_debug_errno(r
, "Failed to get link from ifindex %i, ignoring: %m", ifindex
);
244 (void) link_initialized(link
, device
);
249 static int manager_connect_udev(Manager
*m
) {
252 /* udev does not initialize devices inside containers,
253 * so we rely on them being already initialized before
254 * entering the container */
255 if (detect_container() > 0)
258 r
= sd_device_monitor_new(&m
->device_monitor
);
260 return log_error_errno(r
, "Failed to initialize device monitor: %m");
262 r
= sd_device_monitor_filter_add_match_subsystem_devtype(m
->device_monitor
, "net", NULL
);
264 return log_error_errno(r
, "Could not add device monitor filter: %m");
266 r
= sd_device_monitor_attach_event(m
->device_monitor
, m
->event
);
268 return log_error_errno(r
, "Failed to attach event to device monitor: %m");
270 r
= sd_device_monitor_start(m
->device_monitor
, manager_udev_process_link
, m
);
272 return log_error_errno(r
, "Failed to start device monitor: %m");
277 int manager_rtnl_process_route(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
278 _cleanup_(route_freep
) Route
*tmp
= NULL
;
280 Manager
*m
= userdata
;
291 if (sd_netlink_message_is_error(message
)) {
292 r
= sd_netlink_message_get_errno(message
);
294 log_message_warning_errno(message
, r
, "rtnl: failed to receive route message, ignoring");
299 r
= sd_netlink_message_get_type(message
, &type
);
301 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
303 } else if (!IN_SET(type
, RTM_NEWROUTE
, RTM_DELROUTE
)) {
304 log_warning("rtnl: received unexpected message type %u when processing route, ignoring.", type
);
308 r
= sd_netlink_message_read_u32(message
, RTA_OIF
, &ifindex
);
310 log_debug("rtnl: received route message without ifindex, ignoring");
313 log_warning_errno(r
, "rtnl: could not get ifindex from route message, ignoring: %m");
315 } else if (ifindex
<= 0) {
316 log_warning("rtnl: received route message with invalid ifindex %d, ignoring.", ifindex
);
320 r
= link_get(m
, ifindex
, &link
);
321 if (r
< 0 || !link
) {
322 /* when enumerating we might be out of sync, but we will
323 * get the route again, so just ignore it */
325 log_warning("rtnl: received route message for link (%d) we do not know about, ignoring", ifindex
);
333 r
= sd_rtnl_message_route_get_family(message
, &tmp
->family
);
335 log_link_warning(link
, "rtnl: received route message without family, ignoring");
337 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
338 log_link_debug(link
, "rtnl: received route message with invalid family '%i', ignoring", tmp
->family
);
342 r
= sd_rtnl_message_route_get_protocol(message
, &tmp
->protocol
);
344 log_warning_errno(r
, "rtnl: received route message without route protocol: %m");
348 switch (tmp
->family
) {
350 r
= sd_netlink_message_read_in_addr(message
, RTA_DST
, &tmp
->dst
.in
);
351 if (r
< 0 && r
!= -ENODATA
) {
352 log_link_warning_errno(link
, r
, "rtnl: received route message without valid destination, ignoring: %m");
356 r
= sd_netlink_message_read_in_addr(message
, RTA_GATEWAY
, &tmp
->gw
.in
);
357 if (r
< 0 && r
!= -ENODATA
) {
358 log_link_warning_errno(link
, r
, "rtnl: received route message without valid gateway, ignoring: %m");
362 r
= sd_netlink_message_read_in_addr(message
, RTA_SRC
, &tmp
->src
.in
);
363 if (r
< 0 && r
!= -ENODATA
) {
364 log_link_warning_errno(link
, r
, "rtnl: received route message without valid source, ignoring: %m");
368 r
= sd_netlink_message_read_in_addr(message
, RTA_PREFSRC
, &tmp
->prefsrc
.in
);
369 if (r
< 0 && r
!= -ENODATA
) {
370 log_link_warning_errno(link
, r
, "rtnl: received route message without valid preferred source, ignoring: %m");
377 r
= sd_netlink_message_read_in6_addr(message
, RTA_DST
, &tmp
->dst
.in6
);
378 if (r
< 0 && r
!= -ENODATA
) {
379 log_link_warning_errno(link
, r
, "rtnl: received route message without valid destination, ignoring: %m");
383 r
= sd_netlink_message_read_in6_addr(message
, RTA_GATEWAY
, &tmp
->gw
.in6
);
384 if (r
< 0 && r
!= -ENODATA
) {
385 log_link_warning_errno(link
, r
, "rtnl: received route message without valid gateway, ignoring: %m");
389 r
= sd_netlink_message_read_in6_addr(message
, RTA_SRC
, &tmp
->src
.in6
);
390 if (r
< 0 && r
!= -ENODATA
) {
391 log_link_warning_errno(link
, r
, "rtnl: received route message without valid source, ignoring: %m");
395 r
= sd_netlink_message_read_in6_addr(message
, RTA_PREFSRC
, &tmp
->prefsrc
.in6
);
396 if (r
< 0 && r
!= -ENODATA
) {
397 log_link_warning_errno(link
, r
, "rtnl: received route message without valid preferred source, ignoring: %m");
404 assert_not_reached("Received route message with unsupported address family");
408 r
= sd_rtnl_message_route_get_dst_prefixlen(message
, &tmp
->dst_prefixlen
);
410 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid destination prefixlen, ignoring: %m");
414 r
= sd_rtnl_message_route_get_src_prefixlen(message
, &tmp
->src_prefixlen
);
416 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid source prefixlen, ignoring: %m");
420 r
= sd_rtnl_message_route_get_scope(message
, &tmp
->scope
);
422 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid scope, ignoring: %m");
426 r
= sd_rtnl_message_route_get_tos(message
, &tmp
->tos
);
428 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid tos, ignoring: %m");
432 r
= sd_rtnl_message_route_get_type(message
, &tmp
->type
);
434 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid type, ignoring: %m");
438 r
= sd_rtnl_message_route_get_table(message
, &table
);
440 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid table, ignoring: %m");
445 r
= sd_netlink_message_read_u32(message
, RTA_PRIORITY
, &tmp
->priority
);
446 if (r
< 0 && r
!= -ENODATA
) {
447 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid priority, ignoring: %m");
451 r
= sd_netlink_message_enter_container(message
, RTA_METRICS
);
452 if (r
< 0 && r
!= -ENODATA
) {
453 log_link_error_errno(link
, r
, "rtnl: Could not enter RTA_METRICS container: %m");
457 r
= sd_netlink_message_read_u32(message
, RTAX_INITCWND
, &tmp
->initcwnd
);
458 if (r
< 0 && r
!= -ENODATA
) {
459 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid initcwnd, ignoring: %m");
463 r
= sd_netlink_message_read_u32(message
, RTAX_INITRWND
, &tmp
->initrwnd
);
464 if (r
< 0 && r
!= -ENODATA
) {
465 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid initrwnd, ignoring: %m");
469 r
= sd_netlink_message_exit_container(message
);
471 log_link_error_errno(link
, r
, "rtnl: Could not exit from RTA_METRICS container: %m");
476 (void) route_get(link
, tmp
, &route
);
479 _cleanup_free_
char *buf_dst
= NULL
, *buf_dst_prefixlen
= NULL
,
480 *buf_src
= NULL
, *buf_gw
= NULL
, *buf_prefsrc
= NULL
;
481 char buf_scope
[ROUTE_SCOPE_STR_MAX
], buf_table
[ROUTE_TABLE_STR_MAX
],
482 buf_protocol
[ROUTE_PROTOCOL_STR_MAX
];
484 if (!in_addr_is_null(tmp
->family
, &tmp
->dst
)) {
485 (void) in_addr_to_string(tmp
->family
, &tmp
->dst
, &buf_dst
);
486 (void) asprintf(&buf_dst_prefixlen
, "/%u", tmp
->dst_prefixlen
);
488 if (!in_addr_is_null(tmp
->family
, &tmp
->src
))
489 (void) in_addr_to_string(tmp
->family
, &tmp
->src
, &buf_src
);
490 if (!in_addr_is_null(tmp
->family
, &tmp
->gw
))
491 (void) in_addr_to_string(tmp
->family
, &tmp
->gw
, &buf_gw
);
492 if (!in_addr_is_null(tmp
->family
, &tmp
->prefsrc
))
493 (void) in_addr_to_string(tmp
->family
, &tmp
->prefsrc
, &buf_prefsrc
);
496 "%s route: dst: %s%s, src: %s, gw: %s, prefsrc: %s, scope: %s, table: %s, proto: %s, type: %s",
497 (!route
&& !link
->manager
->manage_foreign_routes
) || type
== RTM_DELROUTE
? "Forgetting" :
498 route
? "Received remembered" : "Remembering",
499 strna(buf_dst
), strempty(buf_dst_prefixlen
),
500 strna(buf_src
), strna(buf_gw
), strna(buf_prefsrc
),
501 format_route_scope(tmp
->scope
, buf_scope
, sizeof buf_scope
),
502 format_route_table(tmp
->table
, buf_table
, sizeof buf_table
),
503 format_route_protocol(tmp
->protocol
, buf_protocol
, sizeof buf_protocol
),
504 strna(route_type_to_string(tmp
->type
)));
509 if (!route
&& link
->manager
->manage_foreign_routes
) {
510 /* A route appeared that we did not request */
511 r
= route_add_foreign(link
, tmp
, &route
);
513 log_link_warning_errno(link
, r
, "Failed to remember foreign route, ignoring: %m");
525 assert_not_reached("Received route message with invalid RTNL message type");
531 static int manager_rtnl_process_neighbor_lladdr(sd_netlink_message
*message
, union lladdr_union
*lladdr
, size_t *size
, char **str
) {
541 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->ip
.in6
), &lladdr
->ip
.in6
);
543 *size
= sizeof(lladdr
->ip
.in6
);
544 if (in_addr_to_string(AF_INET6
, &lladdr
->ip
, str
) < 0)
545 log_warning_errno(r
, "Could not print lower address: %m");
549 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->mac
), &lladdr
->mac
);
551 *size
= sizeof(lladdr
->mac
);
552 *str
= new(char, ETHER_ADDR_TO_STRING_MAX
);
557 ether_addr_to_string(&lladdr
->mac
, *str
);
561 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->ip
.in
), &lladdr
->ip
.in
);
563 *size
= sizeof(lladdr
->ip
.in
);
564 if (in_addr_to_string(AF_INET
, &lladdr
->ip
, str
) < 0)
565 log_warning_errno(r
, "Could not print lower address: %m");
572 int manager_rtnl_process_neighbor(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
573 Manager
*m
= userdata
;
575 Neighbor
*neighbor
= NULL
;
576 int ifindex
, family
, r
;
577 uint16_t type
, state
;
578 union in_addr_union in_addr
= IN_ADDR_NULL
;
579 _cleanup_free_
char *addr_str
= NULL
;
580 union lladdr_union lladdr
;
581 size_t lladdr_size
= 0;
582 _cleanup_free_
char *lladdr_str
= NULL
;
588 if (sd_netlink_message_is_error(message
)) {
589 r
= sd_netlink_message_get_errno(message
);
591 log_message_warning_errno(message
, r
, "rtnl: failed to receive neighbor message, ignoring");
596 r
= sd_netlink_message_get_type(message
, &type
);
598 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
600 } else if (!IN_SET(type
, RTM_NEWNEIGH
, RTM_DELNEIGH
)) {
601 log_warning("rtnl: received unexpected message type %u when processing neighbor, ignoring.", type
);
605 r
= sd_rtnl_message_neigh_get_state(message
, &state
);
607 log_link_warning_errno(link
, r
, "rtnl: received neighbor message with invalid state, ignoring: %m");
609 } else if (!FLAGS_SET(state
, NUD_PERMANENT
)) {
610 log_debug("rtnl: received non-static neighbor, ignoring.");
614 r
= sd_rtnl_message_neigh_get_ifindex(message
, &ifindex
);
616 log_warning_errno(r
, "rtnl: could not get ifindex from message, ignoring: %m");
618 } else if (ifindex
<= 0) {
619 log_warning("rtnl: received neighbor message with invalid ifindex %d, ignoring.", ifindex
);
623 r
= link_get(m
, ifindex
, &link
);
624 if (r
< 0 || !link
) {
625 /* when enumerating we might be out of sync, but we will get the neighbor again, so just
628 log_warning("rtnl: received neighbor for link '%d' we don't know about, ignoring.", ifindex
);
632 r
= sd_rtnl_message_neigh_get_family(message
, &family
);
634 log_link_warning(link
, "rtnl: received neighbor message without family, ignoring.");
636 } else if (!IN_SET(family
, AF_INET
, AF_INET6
)) {
637 log_link_debug(link
, "rtnl: received neighbor message with invalid family '%i', ignoring.", family
);
643 r
= sd_netlink_message_read_in_addr(message
, NDA_DST
, &in_addr
.in
);
645 log_link_warning_errno(link
, r
, "rtnl: received neighbor message without valid address, ignoring: %m");
652 r
= sd_netlink_message_read_in6_addr(message
, NDA_DST
, &in_addr
.in6
);
654 log_link_warning_errno(link
, r
, "rtnl: received neighbor message without valid address, ignoring: %m");
661 assert_not_reached("Received unsupported address family");
664 if (in_addr_to_string(family
, &in_addr
, &addr_str
) < 0)
665 log_link_warning_errno(link
, r
, "Could not print address: %m");
667 r
= manager_rtnl_process_neighbor_lladdr(message
, &lladdr
, &lladdr_size
, &lladdr_str
);
669 log_link_warning_errno(link
, r
, "rtnl: received neighbor message with invalid lladdr, ignoring: %m");
673 (void) neighbor_get(link
, family
, &in_addr
, &lladdr
, lladdr_size
, &neighbor
);
678 log_link_debug(link
, "Remembering neighbor: %s->%s",
679 strnull(addr_str
), strnull(lladdr_str
));
681 /* A neighbor appeared that we did not request */
682 r
= neighbor_add_foreign(link
, family
, &in_addr
, &lladdr
, lladdr_size
, &neighbor
);
684 log_link_warning_errno(link
, r
, "Failed to remember foreign neighbor %s->%s, ignoring: %m",
685 strnull(addr_str
), strnull(lladdr_str
));
688 log_link_debug(link
, "Remembering foreign neighbor: %s->%s",
689 strnull(addr_str
), strnull(lladdr_str
));
696 log_link_debug(link
, "Forgetting neighbor: %s->%s",
697 strnull(addr_str
), strnull(lladdr_str
));
698 (void) neighbor_free(neighbor
);
700 log_link_debug(link
, "Kernel removed a neighbor we don't remember: %s->%s, ignoring.",
701 strnull(addr_str
), strnull(lladdr_str
));
706 assert_not_reached("Received invalid RTNL message type");
712 int manager_rtnl_process_address(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
713 _cleanup_free_
char *buf
= NULL
;
714 Manager
*m
= userdata
;
717 unsigned char flags
, prefixlen
, scope
;
718 union in_addr_union in_addr
= IN_ADDR_NULL
;
719 struct ifa_cacheinfo cinfo
;
720 Address
*address
= NULL
;
721 char valid_buf
[FORMAT_TIMESPAN_MAX
];
722 const char *valid_str
= NULL
;
723 int ifindex
, family
, r
;
729 if (sd_netlink_message_is_error(message
)) {
730 r
= sd_netlink_message_get_errno(message
);
732 log_message_warning_errno(message
, r
, "rtnl: failed to receive address message, ignoring");
737 r
= sd_netlink_message_get_type(message
, &type
);
739 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
741 } else if (!IN_SET(type
, RTM_NEWADDR
, RTM_DELADDR
)) {
742 log_warning("rtnl: received unexpected message type %u when processing address, ignoring.", type
);
746 r
= sd_rtnl_message_addr_get_ifindex(message
, &ifindex
);
748 log_warning_errno(r
, "rtnl: could not get ifindex from message, ignoring: %m");
750 } else if (ifindex
<= 0) {
751 log_warning("rtnl: received address message with invalid ifindex %d, ignoring.", ifindex
);
755 r
= link_get(m
, ifindex
, &link
);
756 if (r
< 0 || !link
) {
757 /* when enumerating we might be out of sync, but we will get the address again, so just
760 log_warning("rtnl: received address for link '%d' we don't know about, ignoring.", ifindex
);
764 r
= sd_rtnl_message_addr_get_family(message
, &family
);
766 log_link_warning(link
, "rtnl: received address message without family, ignoring.");
768 } else if (!IN_SET(family
, AF_INET
, AF_INET6
)) {
769 log_link_debug(link
, "rtnl: received address message with invalid family '%i', ignoring.", family
);
773 r
= sd_rtnl_message_addr_get_prefixlen(message
, &prefixlen
);
775 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid prefixlen, ignoring: %m");
779 r
= sd_rtnl_message_addr_get_scope(message
, &scope
);
781 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid scope, ignoring: %m");
785 r
= sd_rtnl_message_addr_get_flags(message
, &flags
);
787 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid flags, ignoring: %m");
793 r
= sd_netlink_message_read_in_addr(message
, IFA_LOCAL
, &in_addr
.in
);
795 log_link_warning_errno(link
, r
, "rtnl: received address message without valid address, ignoring: %m");
802 r
= sd_netlink_message_read_in6_addr(message
, IFA_ADDRESS
, &in_addr
.in6
);
804 log_link_warning_errno(link
, r
, "rtnl: received address message without valid address, ignoring: %m");
811 assert_not_reached("Received unsupported address family");
814 r
= in_addr_to_string(family
, &in_addr
, &buf
);
816 log_link_warning_errno(link
, r
, "Could not print address: %m");
818 r
= sd_netlink_message_read_cache_info(message
, IFA_CACHEINFO
, &cinfo
);
819 if (r
< 0 && r
!= -ENODATA
) {
820 log_link_warning_errno(link
, r
, "rtnl: cannot get IFA_CACHEINFO attribute, ignoring: %m");
822 } else if (r
>= 0 && cinfo
.ifa_valid
!= CACHE_INFO_INFINITY_LIFE_TIME
)
823 valid_str
= format_timespan(valid_buf
, FORMAT_TIMESPAN_MAX
,
824 cinfo
.ifa_valid
* USEC_PER_SEC
,
827 (void) address_get(link
, family
, &in_addr
, prefixlen
, &address
);
832 log_link_debug(link
, "Remembering updated address: %s/%u (valid %s%s)",
833 strnull(buf
), prefixlen
,
834 valid_str
? "for " : "forever", strempty(valid_str
));
836 /* An address appeared that we did not request */
837 r
= address_add_foreign(link
, family
, &in_addr
, prefixlen
, &address
);
839 log_link_warning_errno(link
, r
, "Failed to remember foreign address %s/%u, ignoring: %m",
840 strnull(buf
), prefixlen
);
843 log_link_debug(link
, "Remembering foreign address: %s/%u (valid %s%s)",
844 strnull(buf
), prefixlen
,
845 valid_str
? "for " : "forever", strempty(valid_str
));
848 /* address_update() logs internally, so we don't need to. */
849 (void) address_update(address
, flags
, scope
, &cinfo
);
855 log_link_debug(link
, "Forgetting address: %s/%u (valid %s%s)",
856 strnull(buf
), prefixlen
,
857 valid_str
? "for " : "forever", strempty(valid_str
));
858 (void) address_drop(address
);
860 log_link_debug(link
, "Kernel removed an address we don't remember: %s/%u (valid %s%s), ignoring.",
861 strnull(buf
), prefixlen
,
862 valid_str
? "for " : "forever", strempty(valid_str
));
867 assert_not_reached("Received invalid RTNL message type");
873 static int manager_rtnl_process_link(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
874 Manager
*m
= userdata
;
876 NetDev
*netdev
= NULL
;
885 if (sd_netlink_message_is_error(message
)) {
886 r
= sd_netlink_message_get_errno(message
);
888 log_message_warning_errno(message
, r
, "rtnl: Could not receive link message, ignoring");
893 r
= sd_netlink_message_get_type(message
, &type
);
895 log_warning_errno(r
, "rtnl: Could not get message type, ignoring: %m");
897 } else if (!IN_SET(type
, RTM_NEWLINK
, RTM_DELLINK
)) {
898 log_warning("rtnl: Received unexpected message type %u when processing link, ignoring.", type
);
902 r
= sd_rtnl_message_link_get_ifindex(message
, &ifindex
);
904 log_warning_errno(r
, "rtnl: Could not get ifindex from link message, ignoring: %m");
906 } else if (ifindex
<= 0) {
907 log_warning("rtnl: received link message with invalid ifindex %d, ignoring.", ifindex
);
911 r
= sd_netlink_message_read_string(message
, IFLA_IFNAME
, &name
);
913 log_warning_errno(r
, "rtnl: Received link message without ifname, ignoring: %m");
917 (void) link_get(m
, ifindex
, &link
);
918 (void) netdev_get(m
, name
, &netdev
);
923 /* link is new, so add it */
924 r
= link_add(m
, message
, &link
);
926 log_warning_errno(r
, "Could not process new link message, ignoring: %m");
932 /* netdev exists, so make sure the ifindex matches */
933 r
= netdev_set_ifindex(netdev
, message
);
935 log_warning_errno(r
, "Could not process new link message for netdev, ignoring: %m");
940 r
= link_update(link
, message
);
942 log_warning_errno(r
, "Could not process link message, ignoring: %m");
955 assert_not_reached("Received link message with invalid RTNL message type.");
961 int manager_rtnl_process_rule(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
962 _cleanup_(routing_policy_rule_freep
) RoutingPolicyRule
*tmp
= NULL
;
963 _cleanup_free_
char *from
= NULL
, *to
= NULL
;
964 RoutingPolicyRule
*rule
= NULL
;
965 const char *iif
= NULL
, *oif
= NULL
;
966 uint32_t suppress_prefixlen
;
967 Manager
*m
= userdata
;
976 if (sd_netlink_message_is_error(message
)) {
977 r
= sd_netlink_message_get_errno(message
);
979 log_message_warning_errno(message
, r
, "rtnl: failed to receive rule message, ignoring");
984 r
= sd_netlink_message_get_type(message
, &type
);
986 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
988 } else if (!IN_SET(type
, RTM_NEWRULE
, RTM_DELRULE
)) {
989 log_warning("rtnl: received unexpected message type %u when processing rule, ignoring.", type
);
993 r
= routing_policy_rule_new(&tmp
);
999 r
= sd_rtnl_message_get_family(message
, &tmp
->family
);
1001 log_warning_errno(r
, "rtnl: could not get rule family, ignoring: %m");
1003 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
1004 log_debug("rtnl: received rule message with invalid family %d, ignoring.", tmp
->family
);
1008 switch (tmp
->family
) {
1010 r
= sd_netlink_message_read_in_addr(message
, FRA_SRC
, &tmp
->from
.in
);
1011 if (r
< 0 && r
!= -ENODATA
) {
1012 log_warning_errno(r
, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
1014 } else if (r
>= 0) {
1015 r
= sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message
, &tmp
->from_prefixlen
);
1017 log_warning_errno(r
, "rtnl: received rule message without valid source prefix length, ignoring: %m");
1022 r
= sd_netlink_message_read_in_addr(message
, FRA_DST
, &tmp
->to
.in
);
1023 if (r
< 0 && r
!= -ENODATA
) {
1024 log_warning_errno(r
, "rtnl: could not get FRA_DST attribute, ignoring: %m");
1026 } else if (r
>= 0) {
1027 r
= sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message
, &tmp
->to_prefixlen
);
1029 log_warning_errno(r
, "rtnl: received rule message without valid destination prefix length, ignoring: %m");
1037 r
= sd_netlink_message_read_in6_addr(message
, FRA_SRC
, &tmp
->from
.in6
);
1038 if (r
< 0 && r
!= -ENODATA
) {
1039 log_warning_errno(r
, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
1041 } else if (r
>= 0) {
1042 r
= sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message
, &tmp
->from_prefixlen
);
1044 log_warning_errno(r
, "rtnl: received rule message without valid source prefix length, ignoring: %m");
1049 r
= sd_netlink_message_read_in6_addr(message
, FRA_DST
, &tmp
->to
.in6
);
1050 if (r
< 0 && r
!= -ENODATA
) {
1051 log_warning_errno(r
, "rtnl: could not get FRA_DST attribute, ignoring: %m");
1053 } else if (r
>= 0) {
1054 r
= sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message
, &tmp
->to_prefixlen
);
1056 log_warning_errno(r
, "rtnl: received rule message without valid destination prefix length, ignoring: %m");
1064 assert_not_reached("Received rule message with unsupported address family");
1067 if (tmp
->from_prefixlen
== 0 && tmp
->to_prefixlen
== 0)
1070 r
= sd_rtnl_message_routing_policy_rule_get_flags(message
, &flags
);
1072 log_warning_errno(r
, "rtnl: received rule message without valid flag, ignoring: %m");
1075 tmp
->invert_rule
= flags
& FIB_RULE_INVERT
;
1077 r
= sd_netlink_message_read_u32(message
, FRA_FWMARK
, &tmp
->fwmark
);
1078 if (r
< 0 && r
!= -ENODATA
) {
1079 log_warning_errno(r
, "rtnl: could not get FRA_FWMARK attribute, ignoring: %m");
1083 r
= sd_netlink_message_read_u32(message
, FRA_FWMASK
, &tmp
->fwmask
);
1084 if (r
< 0 && r
!= -ENODATA
) {
1085 log_warning_errno(r
, "rtnl: could not get FRA_FWMASK attribute, ignoring: %m");
1089 r
= sd_netlink_message_read_u32(message
, FRA_PRIORITY
, &tmp
->priority
);
1090 if (r
< 0 && r
!= -ENODATA
) {
1091 log_warning_errno(r
, "rtnl: could not get FRA_PRIORITY attribute, ignoring: %m");
1095 r
= sd_netlink_message_read_u32(message
, FRA_TABLE
, &tmp
->table
);
1096 if (r
< 0 && r
!= -ENODATA
) {
1097 log_warning_errno(r
, "rtnl: could not get FRA_TABLE attribute, ignoring: %m");
1101 r
= sd_rtnl_message_routing_policy_rule_get_tos(message
, &tmp
->tos
);
1102 if (r
< 0 && r
!= -ENODATA
) {
1103 log_warning_errno(r
, "rtnl: could not get ip rule TOS, ignoring: %m");
1107 r
= sd_netlink_message_read_string(message
, FRA_IIFNAME
, &iif
);
1108 if (r
< 0 && r
!= -ENODATA
) {
1109 log_warning_errno(r
, "rtnl: could not get FRA_IIFNAME attribute, ignoring: %m");
1112 r
= free_and_strdup(&tmp
->iif
, iif
);
1116 r
= sd_netlink_message_read_string(message
, FRA_OIFNAME
, &oif
);
1117 if (r
< 0 && r
!= -ENODATA
) {
1118 log_warning_errno(r
, "rtnl: could not get FRA_OIFNAME attribute, ignoring: %m");
1121 r
= free_and_strdup(&tmp
->oif
, oif
);
1125 r
= sd_netlink_message_read_u8(message
, FRA_IP_PROTO
, &tmp
->protocol
);
1126 if (r
< 0 && r
!= -ENODATA
) {
1127 log_warning_errno(r
, "rtnl: could not get FRA_IP_PROTO attribute, ignoring: %m");
1131 r
= sd_netlink_message_read(message
, FRA_SPORT_RANGE
, sizeof(tmp
->sport
), &tmp
->sport
);
1132 if (r
< 0 && r
!= -ENODATA
) {
1133 log_warning_errno(r
, "rtnl: could not get FRA_SPORT_RANGE attribute, ignoring: %m");
1137 r
= sd_netlink_message_read(message
, FRA_DPORT_RANGE
, sizeof(tmp
->dport
), &tmp
->dport
);
1138 if (r
< 0 && r
!= -ENODATA
) {
1139 log_warning_errno(r
, "rtnl: could not get FRA_DPORT_RANGE attribute, ignoring: %m");
1143 r
= sd_netlink_message_read(message
, FRA_UID_RANGE
, sizeof(tmp
->uid_range
), &tmp
->uid_range
);
1144 if (r
< 0 && r
!= -ENODATA
) {
1145 log_warning_errno(r
, "rtnl: could not get FRA_UID_RANGE attribute, ignoring: %m");
1149 r
= sd_netlink_message_read_u32(message
, FRA_SUPPRESS_PREFIXLEN
, &suppress_prefixlen
);
1150 if (r
< 0 && r
!= -ENODATA
) {
1151 log_warning_errno(r
, "rtnl: could not get FRA_SUPPRESS_PREFIXLEN attribute, ignoring: %m");
1155 tmp
->suppress_prefixlen
= (int) suppress_prefixlen
;
1157 (void) routing_policy_rule_get(m
, tmp
, &rule
);
1159 if (DEBUG_LOGGING
) {
1160 (void) in_addr_to_string(tmp
->family
, &tmp
->from
, &from
);
1161 (void) in_addr_to_string(tmp
->family
, &tmp
->to
, &to
);
1167 log_debug("Remembering foreign routing policy rule: %s/%u -> %s/%u, iif: %s, oif: %s, table: %u",
1168 from
, tmp
->from_prefixlen
, to
, tmp
->to_prefixlen
, strna(tmp
->iif
), strna(tmp
->oif
), tmp
->table
);
1169 r
= routing_policy_rule_add_foreign(m
, tmp
, &rule
);
1171 log_warning_errno(r
, "Could not remember foreign rule, ignoring: %m");
1177 log_debug("Forgetting routing policy rule: %s/%u -> %s/%u, iif: %s, oif: %s, table: %u",
1178 from
, tmp
->from_prefixlen
, to
, tmp
->to_prefixlen
, strna(tmp
->iif
), strna(tmp
->oif
), tmp
->table
);
1179 routing_policy_rule_free(rule
);
1184 assert_not_reached("Received invalid RTNL message type");
1190 int manager_rtnl_process_nexthop(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
1191 _cleanup_(nexthop_freep
) NextHop
*tmp
= NULL
;
1192 _cleanup_free_
char *gateway
= NULL
;
1193 NextHop
*nexthop
= NULL
;
1194 Manager
*m
= userdata
;
1203 if (sd_netlink_message_is_error(message
)) {
1204 r
= sd_netlink_message_get_errno(message
);
1206 log_message_warning_errno(message
, r
, "rtnl: failed to receive rule message, ignoring");
1211 r
= sd_netlink_message_get_type(message
, &type
);
1213 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
1215 } else if (!IN_SET(type
, RTM_NEWNEXTHOP
, RTM_DELNEXTHOP
)) {
1216 log_warning("rtnl: received unexpected message type %u when processing nexthop, ignoring.", type
);
1220 r
= nexthop_new(&tmp
);
1224 r
= sd_rtnl_message_get_family(message
, &tmp
->family
);
1226 log_warning_errno(r
, "rtnl: could not get nexthop family, ignoring: %m");
1228 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
1229 log_debug("rtnl: received nexthop message with invalid family %d, ignoring.", tmp
->family
);
1233 switch (tmp
->family
) {
1235 r
= sd_netlink_message_read_in_addr(message
, NHA_GATEWAY
, &tmp
->gw
.in
);
1236 if (r
< 0 && r
!= -ENODATA
) {
1237 log_warning_errno(r
, "rtnl: could not get NHA_GATEWAY attribute, ignoring: %m");
1243 r
= sd_netlink_message_read_in6_addr(message
, NHA_GATEWAY
, &tmp
->gw
.in6
);
1244 if (r
< 0 && r
!= -ENODATA
) {
1245 log_warning_errno(r
, "rtnl: could not get NHA_GATEWAY attribute, ignoring: %m");
1251 assert_not_reached("Received rule message with unsupported address family");
1254 r
= sd_netlink_message_read_u32(message
, NHA_ID
, &tmp
->id
);
1255 if (r
< 0 && r
!= -ENODATA
) {
1256 log_warning_errno(r
, "rtnl: could not get NHA_ID attribute, ignoring: %m");
1260 r
= sd_netlink_message_read_u32(message
, NHA_OIF
, &tmp
->oif
);
1261 if (r
< 0 && r
!= -ENODATA
) {
1262 log_warning_errno(r
, "rtnl: could not get NHA_OIF attribute, ignoring: %m");
1266 r
= link_get(m
, tmp
->oif
, &link
);
1267 if (r
< 0 || !link
) {
1268 if (!m
->enumerating
)
1269 log_warning("rtnl: received nexthop message for link (%d) we do not know about, ignoring", tmp
->oif
);
1273 (void) nexthop_get(link
, tmp
, &nexthop
);
1276 (void) in_addr_to_string(tmp
->family
, &tmp
->gw
, &gateway
);
1279 case RTM_NEWNEXTHOP
:
1281 log_debug("Remembering foreign nexthop: %s, oif: %d, id: %d", gateway
, tmp
->oif
, tmp
->id
);
1282 r
= nexthop_add_foreign(link
, tmp
, &nexthop
);
1284 log_warning_errno(r
, "Could not remember foreign nexthop, ignoring: %m");
1289 case RTM_DELNEXTHOP
:
1290 log_debug("Forgetting foreign nexthop: %s, oif: %d, id: %d", gateway
, tmp
->oif
, tmp
->id
);
1291 nexthop_free(nexthop
);
1296 assert_not_reached("Received invalid RTNL message type");
1302 static int systemd_netlink_fd(void) {
1303 int n
, fd
, rtnl_fd
= -EINVAL
;
1305 n
= sd_listen_fds(true);
1309 for (fd
= SD_LISTEN_FDS_START
; fd
< SD_LISTEN_FDS_START
+ n
; fd
++) {
1310 if (sd_is_socket(fd
, AF_NETLINK
, SOCK_RAW
, -1) > 0) {
1321 static int manager_connect_genl(Manager
*m
) {
1326 r
= sd_genl_socket_open(&m
->genl
);
1330 r
= sd_netlink_inc_rcvbuf(m
->genl
, RCVBUF_SIZE
);
1334 r
= sd_netlink_attach_event(m
->genl
, m
->event
, 0);
1341 static int manager_connect_rtnl(Manager
*m
) {
1346 fd
= systemd_netlink_fd();
1348 r
= sd_netlink_open(&m
->rtnl
);
1350 r
= sd_netlink_open_fd(&m
->rtnl
, fd
);
1354 r
= sd_netlink_inc_rcvbuf(m
->rtnl
, RCVBUF_SIZE
);
1358 r
= sd_netlink_attach_event(m
->rtnl
, m
->event
, 0);
1362 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWLINK
, &manager_rtnl_process_link
, NULL
, m
, "network-rtnl_process_link");
1366 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELLINK
, &manager_rtnl_process_link
, NULL
, m
, "network-rtnl_process_link");
1370 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWADDR
, &manager_rtnl_process_address
, NULL
, m
, "network-rtnl_process_address");
1374 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELADDR
, &manager_rtnl_process_address
, NULL
, m
, "network-rtnl_process_address");
1378 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWNEIGH
, &manager_rtnl_process_neighbor
, NULL
, m
, "network-rtnl_process_neighbor");
1382 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELNEIGH
, &manager_rtnl_process_neighbor
, NULL
, m
, "network-rtnl_process_neighbor");
1386 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWROUTE
, &manager_rtnl_process_route
, NULL
, m
, "network-rtnl_process_route");
1390 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELROUTE
, &manager_rtnl_process_route
, NULL
, m
, "network-rtnl_process_route");
1394 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWRULE
, &manager_rtnl_process_rule
, NULL
, m
, "network-rtnl_process_rule");
1398 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELRULE
, &manager_rtnl_process_rule
, NULL
, m
, "network-rtnl_process_rule");
1402 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWNEXTHOP
, &manager_rtnl_process_nexthop
, NULL
, m
, "network-rtnl_process_nexthop");
1406 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELNEXTHOP
, &manager_rtnl_process_nexthop
, NULL
, m
, "network-rtnl_process_nexthop");
1413 static int ordered_set_put_in_addr_data(OrderedSet
*s
, const struct in_addr_data
*address
) {
1420 r
= in_addr_to_string(address
->family
, &address
->address
, &p
);
1424 r
= ordered_set_consume(s
, p
);
1431 static int ordered_set_put_in_addr_datav(OrderedSet
*s
, const struct in_addr_data
*addresses
, unsigned n
) {
1436 assert(addresses
|| n
== 0);
1438 for (i
= 0; i
< n
; i
++) {
1439 r
= ordered_set_put_in_addr_data(s
, addresses
+i
);
1449 static int ordered_set_put_in4_addr(OrderedSet
*s
, const struct in_addr
*address
) {
1456 r
= in_addr_to_string(AF_INET
, (const union in_addr_union
*) address
, &p
);
1460 r
= ordered_set_consume(s
, p
);
1467 static int ordered_set_put_in4_addrv(OrderedSet
*s
,
1468 const struct in_addr
*addresses
,
1470 bool (*predicate
)(const struct in_addr
*addr
)) {
1475 assert(n
== 0 || addresses
);
1477 for (i
= 0; i
< n
; i
++) {
1478 if (predicate
&& !predicate(&addresses
[i
]))
1480 r
= ordered_set_put_in4_addr(s
, addresses
+i
);
1490 static int manager_save(Manager
*m
) {
1491 _cleanup_ordered_set_free_free_ OrderedSet
*dns
= NULL
, *ntp
= NULL
, *sip
= NULL
, *search_domains
= NULL
, *route_domains
= NULL
;
1492 const char *operstate_str
, *carrier_state_str
, *address_state_str
;
1493 LinkOperationalState operstate
= LINK_OPERSTATE_OFF
;
1494 LinkCarrierState carrier_state
= LINK_CARRIER_STATE_OFF
;
1495 LinkAddressState address_state
= LINK_ADDRESS_STATE_OFF
;
1496 _cleanup_free_
char *temp_path
= NULL
;
1497 _cleanup_strv_free_
char **p
= NULL
;
1498 _cleanup_fclose_
FILE *f
= NULL
;
1504 assert(m
->state_file
);
1506 /* We add all NTP and DNS server to a set, to filter out duplicates */
1507 dns
= ordered_set_new(&string_hash_ops
);
1511 ntp
= ordered_set_new(&string_hash_ops
);
1515 sip
= ordered_set_new(&string_hash_ops
);
1519 search_domains
= ordered_set_new(&dns_name_hash_ops
);
1520 if (!search_domains
)
1523 route_domains
= ordered_set_new(&dns_name_hash_ops
);
1527 HASHMAP_FOREACH(link
, m
->links
, i
) {
1528 if (link
->flags
& IFF_LOOPBACK
)
1531 if (link
->operstate
> operstate
)
1532 operstate
= link
->operstate
;
1534 if (link
->carrier_state
> carrier_state
)
1535 carrier_state
= link
->carrier_state
;
1537 if (link
->address_state
> address_state
)
1538 address_state
= link
->address_state
;
1543 /* First add the static configured entries */
1544 r
= ordered_set_put_in_addr_datav(dns
, link
->network
->dns
, link
->network
->n_dns
);
1548 r
= ordered_set_put_strdupv(ntp
, link
->ntp
?: link
->network
->ntp
);
1552 r
= ordered_set_put_string_set(search_domains
, link
->search_domains
?: link
->network
->search_domains
);
1556 r
= ordered_set_put_string_set(route_domains
, link
->route_domains
?: link
->network
->route_domains
);
1560 if (!link
->dhcp_lease
)
1563 /* Secondly, add the entries acquired via DHCP */
1564 if (link
->network
->dhcp_use_dns
) {
1565 const struct in_addr
*addresses
;
1567 r
= sd_dhcp_lease_get_dns(link
->dhcp_lease
, &addresses
);
1569 r
= ordered_set_put_in4_addrv(dns
, addresses
, r
, in4_addr_is_non_local
);
1572 } else if (r
< 0 && r
!= -ENODATA
)
1576 if (link
->network
->dhcp_use_ntp
) {
1577 const struct in_addr
*addresses
;
1579 r
= sd_dhcp_lease_get_ntp(link
->dhcp_lease
, &addresses
);
1581 r
= ordered_set_put_in4_addrv(ntp
, addresses
, r
, in4_addr_is_non_local
);
1584 } else if (r
< 0 && r
!= -ENODATA
)
1588 if (link
->network
->dhcp_use_sip
) {
1589 const struct in_addr
*addresses
;
1591 r
= sd_dhcp_lease_get_sip(link
->dhcp_lease
, &addresses
);
1593 r
= ordered_set_put_in4_addrv(sip
, addresses
, r
, in4_addr_is_non_local
);
1596 } else if (r
< 0 && r
!= -ENODATA
)
1600 if (link
->network
->dhcp_use_domains
!= DHCP_USE_DOMAINS_NO
) {
1601 const char *domainname
;
1602 char **domains
= NULL
;
1604 OrderedSet
*target_domains
= (link
->network
->dhcp_use_domains
== DHCP_USE_DOMAINS_YES
) ? search_domains
: route_domains
;
1605 r
= sd_dhcp_lease_get_domainname(link
->dhcp_lease
, &domainname
);
1607 r
= ordered_set_put_strdup(target_domains
, domainname
);
1610 } else if (r
!= -ENODATA
)
1613 r
= sd_dhcp_lease_get_search_domains(link
->dhcp_lease
, &domains
);
1615 r
= ordered_set_put_strdupv(target_domains
, domains
);
1618 } else if (r
!= -ENODATA
)
1623 if (carrier_state
>= LINK_CARRIER_STATE_ENSLAVED
)
1624 carrier_state
= LINK_CARRIER_STATE_CARRIER
;
1626 operstate_str
= link_operstate_to_string(operstate
);
1627 assert(operstate_str
);
1629 carrier_state_str
= link_carrier_state_to_string(carrier_state
);
1630 assert(carrier_state_str
);
1632 address_state_str
= link_address_state_to_string(address_state
);
1633 assert(address_state_str
);
1635 r
= fopen_temporary(m
->state_file
, &f
, &temp_path
);
1639 (void) fchmod(fileno(f
), 0644);
1642 "# This is private data. Do not parse.\n"
1644 "CARRIER_STATE=%s\n"
1645 "ADDRESS_STATE=%s\n",
1646 operstate_str
, carrier_state_str
, address_state_str
);
1648 ordered_set_print(f
, "DNS=", dns
);
1649 ordered_set_print(f
, "NTP=", ntp
);
1650 ordered_set_print(f
, "SIP=", sip
);
1651 ordered_set_print(f
, "DOMAINS=", search_domains
);
1652 ordered_set_print(f
, "ROUTE_DOMAINS=", route_domains
);
1654 r
= routing_policy_serialize_rules(m
->rules
, f
);
1658 r
= fflush_and_check(f
);
1662 if (rename(temp_path
, m
->state_file
) < 0) {
1667 if (m
->operational_state
!= operstate
) {
1668 m
->operational_state
= operstate
;
1669 if (strv_extend(&p
, "OperationalState") < 0)
1673 if (m
->carrier_state
!= carrier_state
) {
1674 m
->carrier_state
= carrier_state
;
1675 if (strv_extend(&p
, "CarrierState") < 0)
1679 if (m
->address_state
!= address_state
) {
1680 m
->address_state
= address_state
;
1681 if (strv_extend(&p
, "AddressState") < 0)
1686 r
= manager_send_changed_strv(m
, p
);
1688 log_error_errno(r
, "Could not emit changed properties: %m");
1696 (void) unlink(m
->state_file
);
1697 (void) unlink(temp_path
);
1699 return log_error_errno(r
, "Failed to save network state to %s: %m", m
->state_file
);
1702 static int manager_dirty_handler(sd_event_source
*s
, void *userdata
) {
1703 Manager
*m
= userdata
;
1712 SET_FOREACH(link
, m
->dirty_links
, i
)
1713 if (link_save(link
) >= 0)
1719 static int signal_terminate_callback(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
1720 Manager
*m
= userdata
;
1723 m
->restarting
= false;
1725 log_debug("Terminate operation initiated.");
1727 return sd_event_exit(sd_event_source_get_event(s
), 0);
1730 static int signal_restart_callback(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
1731 Manager
*m
= userdata
;
1734 m
->restarting
= true;
1736 log_debug("Restart operation initiated.");
1738 return sd_event_exit(sd_event_source_get_event(s
), 0);
1741 int manager_new(Manager
**ret
) {
1742 _cleanup_(manager_freep
) Manager
*m
= NULL
;
1745 m
= new(Manager
, 1);
1750 .speed_meter_interval_usec
= SPEED_METER_DEFAULT_TIME_INTERVAL
,
1751 .manage_foreign_routes
= true,
1754 m
->state_file
= strdup("/run/systemd/netif/state");
1758 r
= sd_event_default(&m
->event
);
1762 assert_se(sigprocmask_many(SIG_SETMASK
, NULL
, SIGINT
, SIGTERM
, SIGUSR2
, -1) >= 0);
1764 (void) sd_event_set_watchdog(m
->event
, true);
1765 (void) sd_event_add_signal(m
->event
, NULL
, SIGTERM
, signal_terminate_callback
, m
);
1766 (void) sd_event_add_signal(m
->event
, NULL
, SIGINT
, signal_terminate_callback
, m
);
1767 (void) sd_event_add_signal(m
->event
, NULL
, SIGUSR2
, signal_restart_callback
, m
);
1769 r
= sd_event_add_post(m
->event
, NULL
, manager_dirty_handler
, m
);
1773 r
= manager_connect_rtnl(m
);
1777 r
= manager_connect_genl(m
);
1781 r
= manager_connect_udev(m
);
1785 r
= sd_resolve_default(&m
->resolve
);
1789 r
= sd_resolve_attach_event(m
->resolve
, m
->event
, 0);
1793 r
= setup_default_address_pool(m
);
1797 m
->duid
.type
= DUID_TYPE_EN
;
1799 (void) routing_policy_load_rules(m
->state_file
, &m
->rules_saved
);
1806 void manager_free(Manager
*m
) {
1814 free(m
->state_file
);
1816 while ((a
= hashmap_first_key(m
->dhcp6_prefixes
)))
1817 (void) dhcp6_prefix_remove(m
, a
);
1818 m
->dhcp6_prefixes
= hashmap_free(m
->dhcp6_prefixes
);
1820 while ((link
= hashmap_steal_first(m
->links
))) {
1821 if (link
->dhcp6_client
)
1822 (void) dhcp6_lease_pd_prefix_lost(link
->dhcp6_client
, link
);
1824 (void) link_stop_clients(link
, true);
1829 m
->dirty_links
= set_free_with_destructor(m
->dirty_links
, link_unref
);
1830 m
->links_requesting_uuid
= set_free_with_destructor(m
->links_requesting_uuid
, link_unref
);
1831 m
->links
= hashmap_free_with_destructor(m
->links
, link_unref
);
1833 m
->duids_requesting_uuid
= set_free(m
->duids_requesting_uuid
);
1834 m
->networks
= ordered_hashmap_free_with_destructor(m
->networks
, network_unref
);
1836 m
->netdevs
= hashmap_free_with_destructor(m
->netdevs
, netdev_unref
);
1838 while ((pool
= m
->address_pools
))
1839 address_pool_free(pool
);
1841 /* routing_policy_rule_free() access m->rules and m->rules_foreign.
1842 * So, it is necessary to set NULL after the sets are freed. */
1843 m
->rules
= set_free_with_destructor(m
->rules
, routing_policy_rule_free
);
1844 m
->rules_foreign
= set_free_with_destructor(m
->rules_foreign
, routing_policy_rule_free
);
1845 set_free_with_destructor(m
->rules_saved
, routing_policy_rule_free
);
1847 sd_netlink_unref(m
->rtnl
);
1848 sd_netlink_unref(m
->genl
);
1849 sd_resolve_unref(m
->resolve
);
1851 sd_event_source_unref(m
->speed_meter_event_source
);
1852 sd_event_unref(m
->event
);
1854 sd_device_monitor_unref(m
->device_monitor
);
1856 bus_verify_polkit_async_registry_free(m
->polkit_registry
);
1857 sd_bus_flush_close_unref(m
->bus
);
1859 free(m
->dynamic_timezone
);
1860 free(m
->dynamic_hostname
);
1865 int manager_start(Manager
*m
) {
1872 r
= manager_start_speed_meter(m
);
1874 return log_error_errno(r
, "Failed to initialize speed meter: %m");
1876 /* The dirty handler will deal with future serialization, but the first one
1877 must be done explicitly. */
1881 HASHMAP_FOREACH(link
, m
->links
, i
)
1887 int manager_load_config(Manager
*m
) {
1890 /* update timestamp */
1891 paths_check_timestamp(NETWORK_DIRS
, &m
->network_dirs_ts_usec
, true);
1893 r
= netdev_load(m
, false);
1897 r
= network_load(m
, &m
->networks
);
1904 bool manager_should_reload(Manager
*m
) {
1905 return paths_check_timestamp(NETWORK_DIRS
, &m
->network_dirs_ts_usec
, false);
1908 int manager_rtnl_enumerate_links(Manager
*m
) {
1909 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1910 sd_netlink_message
*link
;
1916 r
= sd_rtnl_message_new_link(m
->rtnl
, &req
, RTM_GETLINK
, 0);
1920 r
= sd_netlink_message_request_dump(req
, true);
1924 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1928 for (link
= reply
; link
; link
= sd_netlink_message_next(link
)) {
1931 m
->enumerating
= true;
1933 k
= manager_rtnl_process_link(m
->rtnl
, link
, m
);
1937 m
->enumerating
= false;
1943 int manager_rtnl_enumerate_addresses(Manager
*m
) {
1944 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1945 sd_netlink_message
*addr
;
1951 r
= sd_rtnl_message_new_addr(m
->rtnl
, &req
, RTM_GETADDR
, 0, 0);
1955 r
= sd_netlink_message_request_dump(req
, true);
1959 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1963 for (addr
= reply
; addr
; addr
= sd_netlink_message_next(addr
)) {
1966 m
->enumerating
= true;
1968 k
= manager_rtnl_process_address(m
->rtnl
, addr
, m
);
1972 m
->enumerating
= false;
1978 int manager_rtnl_enumerate_neighbors(Manager
*m
) {
1979 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1980 sd_netlink_message
*neigh
;
1986 r
= sd_rtnl_message_new_neigh(m
->rtnl
, &req
, RTM_GETNEIGH
, 0, AF_UNSPEC
);
1990 r
= sd_netlink_message_request_dump(req
, true);
1994 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1998 for (neigh
= reply
; neigh
; neigh
= sd_netlink_message_next(neigh
)) {
2001 m
->enumerating
= true;
2003 k
= manager_rtnl_process_neighbor(m
->rtnl
, neigh
, m
);
2007 m
->enumerating
= false;
2013 int manager_rtnl_enumerate_routes(Manager
*m
) {
2014 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2015 sd_netlink_message
*route
;
2021 r
= sd_rtnl_message_new_route(m
->rtnl
, &req
, RTM_GETROUTE
, 0, 0);
2025 r
= sd_netlink_message_request_dump(req
, true);
2029 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2033 for (route
= reply
; route
; route
= sd_netlink_message_next(route
)) {
2036 m
->enumerating
= true;
2038 k
= manager_rtnl_process_route(m
->rtnl
, route
, m
);
2042 m
->enumerating
= false;
2048 int manager_rtnl_enumerate_rules(Manager
*m
) {
2049 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2050 sd_netlink_message
*rule
;
2056 r
= sd_rtnl_message_new_routing_policy_rule(m
->rtnl
, &req
, RTM_GETRULE
, 0);
2060 r
= sd_netlink_message_request_dump(req
, true);
2064 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2066 if (r
== -EOPNOTSUPP
) {
2067 log_debug("FIB Rules are not supported by the kernel. Ignoring.");
2074 for (rule
= reply
; rule
; rule
= sd_netlink_message_next(rule
)) {
2077 m
->enumerating
= true;
2079 k
= manager_rtnl_process_rule(m
->rtnl
, rule
, m
);
2083 m
->enumerating
= false;
2089 int manager_rtnl_enumerate_nexthop(Manager
*m
) {
2090 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2091 sd_netlink_message
*nexthop
;
2097 r
= sd_rtnl_message_new_nexthop(m
->rtnl
, &req
, RTM_GETNEXTHOP
, 0, 0);
2101 r
= sd_netlink_message_request_dump(req
, true);
2105 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2107 if (r
== -EOPNOTSUPP
) {
2108 log_debug("Nexthop are not supported by the kernel. Ignoring.");
2115 for (nexthop
= reply
; nexthop
; nexthop
= sd_netlink_message_next(nexthop
)) {
2118 m
->enumerating
= true;
2120 k
= manager_rtnl_process_nexthop(m
->rtnl
, nexthop
, m
);
2124 m
->enumerating
= false;
2130 int manager_address_pool_acquire(Manager
*m
, int family
, unsigned prefixlen
, union in_addr_union
*found
) {
2135 assert(prefixlen
> 0);
2138 LIST_FOREACH(address_pools
, p
, m
->address_pools
) {
2139 if (p
->family
!= family
)
2142 r
= address_pool_acquire(p
, prefixlen
, found
);
2150 Link
* manager_find_uplink(Manager
*m
, Link
*exclude
) {
2151 _cleanup_free_
struct local_address
*gateways
= NULL
;
2156 /* Looks for a suitable "uplink", via black magic: an
2157 * interface that is up and where the default route with the
2158 * highest priority points to. */
2160 n
= local_gateways(m
->rtnl
, 0, AF_UNSPEC
, &gateways
);
2162 log_warning_errno(n
, "Failed to determine list of default gateways: %m");
2166 for (i
= 0; i
< n
; i
++) {
2169 link
= hashmap_get(m
->links
, INT_TO_PTR(gateways
[i
].ifindex
));
2171 log_debug("Weird, found a gateway for a link we don't know. Ignoring.");
2175 if (link
== exclude
)
2178 if (link
->operstate
< LINK_OPERSTATE_ROUTABLE
)
2187 void manager_dirty(Manager
*manager
) {
2190 /* the serialized state in /run is no longer up-to-date */
2191 manager
->dirty
= true;
2194 static int set_hostname_handler(sd_bus_message
*m
, void *userdata
, sd_bus_error
*ret_error
) {
2195 Manager
*manager
= userdata
;
2196 const sd_bus_error
*e
;
2201 e
= sd_bus_message_get_error(m
);
2203 log_warning_errno(sd_bus_error_get_errno(e
), "Could not set hostname: %s", e
->message
);
2208 int manager_set_hostname(Manager
*m
, const char *hostname
) {
2211 log_debug("Setting transient hostname: '%s'", strna(hostname
));
2213 if (free_and_strdup(&m
->dynamic_hostname
, hostname
) < 0)
2216 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2217 log_debug("Not connected to system bus, setting hostname later.");
2221 r
= sd_bus_call_method_async(
2224 "org.freedesktop.hostname1",
2225 "/org/freedesktop/hostname1",
2226 "org.freedesktop.hostname1",
2228 set_hostname_handler
,
2235 return log_error_errno(r
, "Could not set transient hostname: %m");
2240 static int set_timezone_handler(sd_bus_message
*m
, void *userdata
, sd_bus_error
*ret_error
) {
2241 Manager
*manager
= userdata
;
2242 const sd_bus_error
*e
;
2247 e
= sd_bus_message_get_error(m
);
2249 log_warning_errno(sd_bus_error_get_errno(e
), "Could not set timezone: %s", e
->message
);
2254 int manager_set_timezone(Manager
*m
, const char *tz
) {
2260 log_debug("Setting system timezone: '%s'", tz
);
2261 if (free_and_strdup(&m
->dynamic_timezone
, tz
) < 0)
2264 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2265 log_debug("Not connected to system bus, setting timezone later.");
2269 r
= sd_bus_call_method_async(
2272 "org.freedesktop.timedate1",
2273 "/org/freedesktop/timedate1",
2274 "org.freedesktop.timedate1",
2276 set_timezone_handler
,
2282 return log_error_errno(r
, "Could not set timezone: %m");
2287 int manager_request_product_uuid(Manager
*m
, Link
*link
) {
2292 if (m
->has_product_uuid
)
2295 log_debug("Requesting product UUID");
2300 assert_se(duid
= link_get_duid(link
));
2302 r
= set_ensure_allocated(&m
->links_requesting_uuid
, NULL
);
2306 r
= set_ensure_allocated(&m
->duids_requesting_uuid
, NULL
);
2310 r
= set_put(m
->links_requesting_uuid
, link
);
2314 r
= set_put(m
->duids_requesting_uuid
, duid
);
2321 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2322 log_debug("Not connected to system bus, requesting product UUID later.");
2326 r
= sd_bus_call_method_async(
2329 "org.freedesktop.hostname1",
2330 "/org/freedesktop/hostname1",
2331 "org.freedesktop.hostname1",
2333 get_product_uuid_handler
,
2338 return log_warning_errno(r
, "Failed to get product UUID: %m");