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-log-control-api.h"
15 #include "bus-polkit.h"
17 #include "conf-parser.h"
19 #include "device-private.h"
20 #include "device-util.h"
21 #include "dns-domain.h"
24 #include "local-addresses.h"
25 #include "netlink-util.h"
26 #include "network-internal.h"
27 #include "networkd-dhcp6.h"
28 #include "networkd-link-bus.h"
29 #include "networkd-manager-bus.h"
30 #include "networkd-manager.h"
31 #include "networkd-network-bus.h"
32 #include "networkd-speed-meter.h"
33 #include "ordered-set.h"
34 #include "path-lookup.h"
35 #include "path-util.h"
37 #include "signal-util.h"
39 #include "sysctl-util.h"
40 #include "tmpfile-util.h"
41 #include "udev-util.h"
44 /* use 128 MB for receive socket kernel queue. */
45 #define RCVBUF_SIZE (128*1024*1024)
47 static int log_message_warning_errno(sd_netlink_message
*m
, int err
, const char *msg
) {
48 const char *err_msg
= NULL
;
50 (void) sd_netlink_message_read_string(m
, NLMSGERR_ATTR_MSG
, &err_msg
);
51 return log_warning_errno(err
, "%s: %s%s%m", msg
, strempty(err_msg
), err_msg
? " " : "");
54 static int setup_default_address_pool(Manager
*m
) {
60 /* Add in the well-known private address ranges. */
62 r
= address_pool_new_from_string(m
, &p
, AF_INET6
, "fd00::", 8);
66 r
= address_pool_new_from_string(m
, &p
, AF_INET
, "10.0.0.0", 8);
70 r
= address_pool_new_from_string(m
, &p
, AF_INET
, "172.16.0.0", 12);
74 r
= address_pool_new_from_string(m
, &p
, AF_INET
, "192.168.0.0", 16);
81 static int manager_reset_all(Manager
*m
) {
88 HASHMAP_FOREACH(link
, m
->links
, i
) {
89 r
= link_carrier_reset(link
);
91 log_link_warning_errno(link
, r
, "Could not reset carrier: %m");
97 static int match_prepare_for_sleep(sd_bus_message
*message
, void *userdata
, sd_bus_error
*ret_error
) {
98 Manager
*m
= userdata
;
104 r
= sd_bus_message_read(message
, "b", &b
);
106 log_debug_errno(r
, "Failed to parse PrepareForSleep signal: %m");
113 log_debug("Coming back from suspend, resetting all connections...");
115 (void) manager_reset_all(m
);
120 static int on_connected(sd_bus_message
*message
, void *userdata
, sd_bus_error
*ret_error
) {
121 Manager
*m
= userdata
;
126 /* Did we get a timezone or transient hostname from DHCP while D-Bus wasn't up yet? */
127 if (m
->dynamic_hostname
)
128 (void) manager_set_hostname(m
, m
->dynamic_hostname
);
129 if (m
->dynamic_timezone
)
130 (void) manager_set_timezone(m
, m
->dynamic_timezone
);
131 if (m
->links_requesting_uuid
)
132 (void) manager_request_product_uuid(m
, NULL
);
137 int manager_connect_bus(Manager
*m
) {
145 r
= bus_open_system_watch_bind_with_description(&m
->bus
, "bus-api-network");
147 return log_error_errno(r
, "Failed to connect to bus: %m");
149 r
= sd_bus_add_object_vtable(m
->bus
, NULL
, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", manager_vtable
, m
);
151 return log_error_errno(r
, "Failed to add manager object vtable: %m");
153 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link", link_vtable
, link_object_find
, m
);
155 return log_error_errno(r
, "Failed to add link object vtable: %m");
157 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/network1/link", link_node_enumerator
, m
);
159 return log_error_errno(r
, "Failed to add link enumerator: %m");
161 r
= sd_bus_add_fallback_vtable(m
->bus
, NULL
, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable
, network_object_find
, m
);
163 return log_error_errno(r
, "Failed to add network object vtable: %m");
165 r
= sd_bus_add_node_enumerator(m
->bus
, NULL
, "/org/freedesktop/network1/network", network_node_enumerator
, m
);
167 return log_error_errno(r
, "Failed to add network enumerator: %m");
169 r
= bus_log_control_api_register(m
->bus
);
173 r
= sd_bus_request_name_async(m
->bus
, NULL
, "org.freedesktop.network1", 0, NULL
, NULL
);
175 return log_error_errno(r
, "Failed to request name: %m");
177 r
= sd_bus_attach_event(m
->bus
, m
->event
, 0);
179 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
181 r
= sd_bus_match_signal_async(
184 "org.freedesktop.DBus.Local",
186 "org.freedesktop.DBus.Local",
188 on_connected
, NULL
, m
);
190 return log_error_errno(r
, "Failed to request match on Connected signal: %m");
192 r
= sd_bus_match_signal_async(
195 "org.freedesktop.login1",
196 "/org/freedesktop/login1",
197 "org.freedesktop.login1.Manager",
199 match_prepare_for_sleep
, NULL
, m
);
201 log_warning_errno(r
, "Failed to request match for PrepareForSleep, ignoring: %m");
206 static int manager_udev_process_link(sd_device_monitor
*monitor
, sd_device
*device
, void *userdata
) {
207 Manager
*m
= userdata
;
215 r
= device_get_action(device
, &action
);
217 log_device_debug_errno(device
, r
, "Failed to get udev action, ignoring device: %m");
221 if (!IN_SET(action
, DEVICE_ACTION_ADD
, DEVICE_ACTION_CHANGE
, DEVICE_ACTION_MOVE
)) {
222 log_device_debug(device
, "Ignoring udev %s event for device.", device_action_to_string(action
));
226 r
= sd_device_get_ifindex(device
, &ifindex
);
228 log_device_debug_errno(device
, r
, "Ignoring udev ADD event for device without ifindex or with invalid ifindex: %m");
232 r
= device_is_renaming(device
);
234 log_device_error_errno(device
, r
, "Failed to determine the device is renamed or not, ignoring '%s' uevent: %m",
235 device_action_to_string(action
));
239 log_device_debug(device
, "Interface is under renaming, wait for the interface to be renamed: %m");
243 r
= link_get(m
, ifindex
, &link
);
246 log_debug_errno(r
, "Failed to get link from ifindex %i, ignoring: %m", ifindex
);
250 (void) link_initialized(link
, device
);
255 static int manager_connect_udev(Manager
*m
) {
258 /* udev does not initialize devices inside containers,
259 * so we rely on them being already initialized before
260 * entering the container */
261 if (detect_container() > 0)
264 r
= sd_device_monitor_new(&m
->device_monitor
);
266 return log_error_errno(r
, "Failed to initialize device monitor: %m");
268 r
= sd_device_monitor_filter_add_match_subsystem_devtype(m
->device_monitor
, "net", NULL
);
270 return log_error_errno(r
, "Could not add device monitor filter: %m");
272 r
= sd_device_monitor_attach_event(m
->device_monitor
, m
->event
);
274 return log_error_errno(r
, "Failed to attach event to device monitor: %m");
276 r
= sd_device_monitor_start(m
->device_monitor
, manager_udev_process_link
, m
);
278 return log_error_errno(r
, "Failed to start device monitor: %m");
283 int manager_rtnl_process_route(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
284 _cleanup_(route_freep
) Route
*tmp
= NULL
;
286 Manager
*m
= userdata
;
297 if (sd_netlink_message_is_error(message
)) {
298 r
= sd_netlink_message_get_errno(message
);
300 log_message_warning_errno(message
, r
, "rtnl: failed to receive route message, ignoring");
305 r
= sd_netlink_message_get_type(message
, &type
);
307 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
309 } else if (!IN_SET(type
, RTM_NEWROUTE
, RTM_DELROUTE
)) {
310 log_warning("rtnl: received unexpected message type %u when processing route, ignoring.", type
);
314 r
= sd_netlink_message_read_u32(message
, RTA_OIF
, &ifindex
);
316 log_debug("rtnl: received route message without ifindex, ignoring");
319 log_warning_errno(r
, "rtnl: could not get ifindex from route message, ignoring: %m");
321 } else if (ifindex
<= 0) {
322 log_warning("rtnl: received route message with invalid ifindex %d, ignoring.", ifindex
);
326 r
= link_get(m
, ifindex
, &link
);
327 if (r
< 0 || !link
) {
328 /* when enumerating we might be out of sync, but we will
329 * get the route again, so just ignore it */
331 log_warning("rtnl: received route message for link (%d) we do not know about, ignoring", ifindex
);
339 r
= sd_rtnl_message_route_get_family(message
, &tmp
->family
);
341 log_link_warning(link
, "rtnl: received route message without family, ignoring");
343 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
344 log_link_debug(link
, "rtnl: received route message with invalid family '%i', ignoring", tmp
->family
);
348 r
= sd_rtnl_message_route_get_protocol(message
, &tmp
->protocol
);
350 log_warning_errno(r
, "rtnl: received route message without route protocol: %m");
354 switch (tmp
->family
) {
356 r
= sd_netlink_message_read_in_addr(message
, RTA_DST
, &tmp
->dst
.in
);
357 if (r
< 0 && r
!= -ENODATA
) {
358 log_link_warning_errno(link
, r
, "rtnl: received route message without valid destination, ignoring: %m");
362 r
= sd_netlink_message_read_in_addr(message
, RTA_GATEWAY
, &tmp
->gw
.in
);
363 if (r
< 0 && r
!= -ENODATA
) {
364 log_link_warning_errno(link
, r
, "rtnl: received route message without valid gateway, ignoring: %m");
368 r
= sd_netlink_message_read_in_addr(message
, RTA_SRC
, &tmp
->src
.in
);
369 if (r
< 0 && r
!= -ENODATA
) {
370 log_link_warning_errno(link
, r
, "rtnl: received route message without valid source, ignoring: %m");
374 r
= sd_netlink_message_read_in_addr(message
, RTA_PREFSRC
, &tmp
->prefsrc
.in
);
375 if (r
< 0 && r
!= -ENODATA
) {
376 log_link_warning_errno(link
, r
, "rtnl: received route message without valid preferred source, ignoring: %m");
383 r
= sd_netlink_message_read_in6_addr(message
, RTA_DST
, &tmp
->dst
.in6
);
384 if (r
< 0 && r
!= -ENODATA
) {
385 log_link_warning_errno(link
, r
, "rtnl: received route message without valid destination, ignoring: %m");
389 r
= sd_netlink_message_read_in6_addr(message
, RTA_GATEWAY
, &tmp
->gw
.in6
);
390 if (r
< 0 && r
!= -ENODATA
) {
391 log_link_warning_errno(link
, r
, "rtnl: received route message without valid gateway, ignoring: %m");
395 r
= sd_netlink_message_read_in6_addr(message
, RTA_SRC
, &tmp
->src
.in6
);
396 if (r
< 0 && r
!= -ENODATA
) {
397 log_link_warning_errno(link
, r
, "rtnl: received route message without valid source, ignoring: %m");
401 r
= sd_netlink_message_read_in6_addr(message
, RTA_PREFSRC
, &tmp
->prefsrc
.in6
);
402 if (r
< 0 && r
!= -ENODATA
) {
403 log_link_warning_errno(link
, r
, "rtnl: received route message without valid preferred source, ignoring: %m");
410 assert_not_reached("Received route message with unsupported address family");
414 r
= sd_rtnl_message_route_get_dst_prefixlen(message
, &tmp
->dst_prefixlen
);
416 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid destination prefixlen, ignoring: %m");
420 r
= sd_rtnl_message_route_get_src_prefixlen(message
, &tmp
->src_prefixlen
);
422 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid source prefixlen, ignoring: %m");
426 r
= sd_rtnl_message_route_get_scope(message
, &tmp
->scope
);
428 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid scope, ignoring: %m");
432 r
= sd_rtnl_message_route_get_tos(message
, &tmp
->tos
);
434 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid tos, ignoring: %m");
438 r
= sd_rtnl_message_route_get_type(message
, &tmp
->type
);
440 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid type, ignoring: %m");
444 r
= sd_rtnl_message_route_get_table(message
, &table
);
446 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid table, ignoring: %m");
451 r
= sd_netlink_message_read_u32(message
, RTA_PRIORITY
, &tmp
->priority
);
452 if (r
< 0 && r
!= -ENODATA
) {
453 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid priority, ignoring: %m");
457 r
= sd_netlink_message_enter_container(message
, RTA_METRICS
);
458 if (r
< 0 && r
!= -ENODATA
) {
459 log_link_error_errno(link
, r
, "rtnl: Could not enter RTA_METRICS container: %m");
463 r
= sd_netlink_message_read_u32(message
, RTAX_INITCWND
, &tmp
->initcwnd
);
464 if (r
< 0 && r
!= -ENODATA
) {
465 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid initcwnd, ignoring: %m");
469 r
= sd_netlink_message_read_u32(message
, RTAX_INITRWND
, &tmp
->initrwnd
);
470 if (r
< 0 && r
!= -ENODATA
) {
471 log_link_warning_errno(link
, r
, "rtnl: received route message with invalid initrwnd, ignoring: %m");
475 r
= sd_netlink_message_exit_container(message
);
477 log_link_error_errno(link
, r
, "rtnl: Could not exit from RTA_METRICS container: %m");
482 (void) route_get(link
, tmp
, &route
);
485 _cleanup_free_
char *buf_dst
= NULL
, *buf_dst_prefixlen
= NULL
,
486 *buf_src
= NULL
, *buf_gw
= NULL
, *buf_prefsrc
= NULL
;
487 char buf_scope
[ROUTE_SCOPE_STR_MAX
], buf_table
[ROUTE_TABLE_STR_MAX
],
488 buf_protocol
[ROUTE_PROTOCOL_STR_MAX
];
490 if (!in_addr_is_null(tmp
->family
, &tmp
->dst
)) {
491 (void) in_addr_to_string(tmp
->family
, &tmp
->dst
, &buf_dst
);
492 (void) asprintf(&buf_dst_prefixlen
, "/%u", tmp
->dst_prefixlen
);
494 if (!in_addr_is_null(tmp
->family
, &tmp
->src
))
495 (void) in_addr_to_string(tmp
->family
, &tmp
->src
, &buf_src
);
496 if (!in_addr_is_null(tmp
->family
, &tmp
->gw
))
497 (void) in_addr_to_string(tmp
->family
, &tmp
->gw
, &buf_gw
);
498 if (!in_addr_is_null(tmp
->family
, &tmp
->prefsrc
))
499 (void) in_addr_to_string(tmp
->family
, &tmp
->prefsrc
, &buf_prefsrc
);
502 "%s route: dst: %s%s, src: %s, gw: %s, prefsrc: %s, scope: %s, table: %s, proto: %s, type: %s",
503 (!route
&& !link
->manager
->manage_foreign_routes
) || type
== RTM_DELROUTE
? "Forgetting" :
504 route
? "Received remembered" : "Remembering",
505 strna(buf_dst
), strempty(buf_dst_prefixlen
),
506 strna(buf_src
), strna(buf_gw
), strna(buf_prefsrc
),
507 format_route_scope(tmp
->scope
, buf_scope
, sizeof buf_scope
),
508 format_route_table(tmp
->table
, buf_table
, sizeof buf_table
),
509 format_route_protocol(tmp
->protocol
, buf_protocol
, sizeof buf_protocol
),
510 strna(route_type_to_string(tmp
->type
)));
515 if (!route
&& link
->manager
->manage_foreign_routes
) {
516 /* A route appeared that we did not request */
517 r
= route_add_foreign(link
, tmp
, &route
);
519 log_link_warning_errno(link
, r
, "Failed to remember foreign route, ignoring: %m");
531 assert_not_reached("Received route message with invalid RTNL message type");
537 static int manager_rtnl_process_neighbor_lladdr(sd_netlink_message
*message
, union lladdr_union
*lladdr
, size_t *size
, char **str
) {
547 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->ip
.in6
), &lladdr
->ip
.in6
);
549 *size
= sizeof(lladdr
->ip
.in6
);
550 if (in_addr_to_string(AF_INET6
, &lladdr
->ip
, str
) < 0)
551 log_warning_errno(r
, "Could not print lower address: %m");
555 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->mac
), &lladdr
->mac
);
557 *size
= sizeof(lladdr
->mac
);
558 *str
= new(char, ETHER_ADDR_TO_STRING_MAX
);
563 ether_addr_to_string(&lladdr
->mac
, *str
);
567 r
= sd_netlink_message_read(message
, NDA_LLADDR
, sizeof(lladdr
->ip
.in
), &lladdr
->ip
.in
);
569 *size
= sizeof(lladdr
->ip
.in
);
570 if (in_addr_to_string(AF_INET
, &lladdr
->ip
, str
) < 0)
571 log_warning_errno(r
, "Could not print lower address: %m");
578 int manager_rtnl_process_neighbor(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
579 Manager
*m
= userdata
;
581 Neighbor
*neighbor
= NULL
;
582 int ifindex
, family
, r
;
583 uint16_t type
, state
;
584 union in_addr_union in_addr
= IN_ADDR_NULL
;
585 _cleanup_free_
char *addr_str
= NULL
;
586 union lladdr_union lladdr
;
587 size_t lladdr_size
= 0;
588 _cleanup_free_
char *lladdr_str
= NULL
;
594 if (sd_netlink_message_is_error(message
)) {
595 r
= sd_netlink_message_get_errno(message
);
597 log_message_warning_errno(message
, r
, "rtnl: failed to receive neighbor message, ignoring");
602 r
= sd_netlink_message_get_type(message
, &type
);
604 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
606 } else if (!IN_SET(type
, RTM_NEWNEIGH
, RTM_DELNEIGH
)) {
607 log_warning("rtnl: received unexpected message type %u when processing neighbor, ignoring.", type
);
611 r
= sd_rtnl_message_neigh_get_state(message
, &state
);
613 log_link_warning_errno(link
, r
, "rtnl: received neighbor message with invalid state, ignoring: %m");
615 } else if (!FLAGS_SET(state
, NUD_PERMANENT
)) {
616 log_debug("rtnl: received non-static neighbor, ignoring.");
620 r
= sd_rtnl_message_neigh_get_ifindex(message
, &ifindex
);
622 log_warning_errno(r
, "rtnl: could not get ifindex from message, ignoring: %m");
624 } else if (ifindex
<= 0) {
625 log_warning("rtnl: received neighbor message with invalid ifindex %d, ignoring.", ifindex
);
629 r
= link_get(m
, ifindex
, &link
);
630 if (r
< 0 || !link
) {
631 /* when enumerating we might be out of sync, but we will get the neighbor again, so just
634 log_warning("rtnl: received neighbor for link '%d' we don't know about, ignoring.", ifindex
);
638 r
= sd_rtnl_message_neigh_get_family(message
, &family
);
640 log_link_warning(link
, "rtnl: received neighbor message without family, ignoring.");
642 } else if (!IN_SET(family
, AF_INET
, AF_INET6
)) {
643 log_link_debug(link
, "rtnl: received neighbor message with invalid family '%i', ignoring.", family
);
649 r
= sd_netlink_message_read_in_addr(message
, NDA_DST
, &in_addr
.in
);
651 log_link_warning_errno(link
, r
, "rtnl: received neighbor message without valid address, ignoring: %m");
658 r
= sd_netlink_message_read_in6_addr(message
, NDA_DST
, &in_addr
.in6
);
660 log_link_warning_errno(link
, r
, "rtnl: received neighbor message without valid address, ignoring: %m");
667 assert_not_reached("Received unsupported address family");
670 if (in_addr_to_string(family
, &in_addr
, &addr_str
) < 0)
671 log_link_warning_errno(link
, r
, "Could not print address: %m");
673 r
= manager_rtnl_process_neighbor_lladdr(message
, &lladdr
, &lladdr_size
, &lladdr_str
);
675 log_link_warning_errno(link
, r
, "rtnl: received neighbor message with invalid lladdr, ignoring: %m");
679 (void) neighbor_get(link
, family
, &in_addr
, &lladdr
, lladdr_size
, &neighbor
);
684 log_link_debug(link
, "Remembering neighbor: %s->%s",
685 strnull(addr_str
), strnull(lladdr_str
));
687 /* A neighbor appeared that we did not request */
688 r
= neighbor_add_foreign(link
, family
, &in_addr
, &lladdr
, lladdr_size
, &neighbor
);
690 log_link_warning_errno(link
, r
, "Failed to remember foreign neighbor %s->%s, ignoring: %m",
691 strnull(addr_str
), strnull(lladdr_str
));
694 log_link_debug(link
, "Remembering foreign neighbor: %s->%s",
695 strnull(addr_str
), strnull(lladdr_str
));
702 log_link_debug(link
, "Forgetting neighbor: %s->%s",
703 strnull(addr_str
), strnull(lladdr_str
));
704 (void) neighbor_free(neighbor
);
706 log_link_debug(link
, "Kernel removed a neighbor we don't remember: %s->%s, ignoring.",
707 strnull(addr_str
), strnull(lladdr_str
));
712 assert_not_reached("Received invalid RTNL message type");
718 int manager_rtnl_process_address(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
719 _cleanup_free_
char *buf
= NULL
;
720 Manager
*m
= userdata
;
723 unsigned char flags
, prefixlen
, scope
;
724 union in_addr_union in_addr
= IN_ADDR_NULL
;
725 struct ifa_cacheinfo cinfo
;
726 Address
*address
= NULL
;
727 char valid_buf
[FORMAT_TIMESPAN_MAX
];
728 const char *valid_str
= NULL
;
729 int ifindex
, family
, r
;
735 if (sd_netlink_message_is_error(message
)) {
736 r
= sd_netlink_message_get_errno(message
);
738 log_message_warning_errno(message
, r
, "rtnl: failed to receive address message, ignoring");
743 r
= sd_netlink_message_get_type(message
, &type
);
745 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
747 } else if (!IN_SET(type
, RTM_NEWADDR
, RTM_DELADDR
)) {
748 log_warning("rtnl: received unexpected message type %u when processing address, ignoring.", type
);
752 r
= sd_rtnl_message_addr_get_ifindex(message
, &ifindex
);
754 log_warning_errno(r
, "rtnl: could not get ifindex from message, ignoring: %m");
756 } else if (ifindex
<= 0) {
757 log_warning("rtnl: received address message with invalid ifindex %d, ignoring.", ifindex
);
761 r
= link_get(m
, ifindex
, &link
);
762 if (r
< 0 || !link
) {
763 /* when enumerating we might be out of sync, but we will get the address again, so just
766 log_warning("rtnl: received address for link '%d' we don't know about, ignoring.", ifindex
);
770 r
= sd_rtnl_message_addr_get_family(message
, &family
);
772 log_link_warning(link
, "rtnl: received address message without family, ignoring.");
774 } else if (!IN_SET(family
, AF_INET
, AF_INET6
)) {
775 log_link_debug(link
, "rtnl: received address message with invalid family '%i', ignoring.", family
);
779 r
= sd_rtnl_message_addr_get_prefixlen(message
, &prefixlen
);
781 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid prefixlen, ignoring: %m");
785 r
= sd_rtnl_message_addr_get_scope(message
, &scope
);
787 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid scope, ignoring: %m");
791 r
= sd_rtnl_message_addr_get_flags(message
, &flags
);
793 log_link_warning_errno(link
, r
, "rtnl: received address message with invalid flags, ignoring: %m");
799 r
= sd_netlink_message_read_in_addr(message
, IFA_LOCAL
, &in_addr
.in
);
801 log_link_warning_errno(link
, r
, "rtnl: received address message without valid address, ignoring: %m");
808 r
= sd_netlink_message_read_in6_addr(message
, IFA_ADDRESS
, &in_addr
.in6
);
810 log_link_warning_errno(link
, r
, "rtnl: received address message without valid address, ignoring: %m");
817 assert_not_reached("Received unsupported address family");
820 r
= in_addr_to_string(family
, &in_addr
, &buf
);
822 log_link_warning_errno(link
, r
, "Could not print address: %m");
824 r
= sd_netlink_message_read_cache_info(message
, IFA_CACHEINFO
, &cinfo
);
825 if (r
< 0 && r
!= -ENODATA
) {
826 log_link_warning_errno(link
, r
, "rtnl: cannot get IFA_CACHEINFO attribute, ignoring: %m");
828 } else if (r
>= 0 && cinfo
.ifa_valid
!= CACHE_INFO_INFINITY_LIFE_TIME
)
829 valid_str
= format_timespan(valid_buf
, FORMAT_TIMESPAN_MAX
,
830 cinfo
.ifa_valid
* USEC_PER_SEC
,
833 (void) address_get(link
, family
, &in_addr
, prefixlen
, &address
);
838 log_link_debug(link
, "Remembering updated address: %s/%u (valid %s%s)",
839 strnull(buf
), prefixlen
,
840 valid_str
? "for " : "forever", strempty(valid_str
));
842 /* An address appeared that we did not request */
843 r
= address_add_foreign(link
, family
, &in_addr
, prefixlen
, &address
);
845 log_link_warning_errno(link
, r
, "Failed to remember foreign address %s/%u, ignoring: %m",
846 strnull(buf
), prefixlen
);
849 log_link_debug(link
, "Remembering foreign address: %s/%u (valid %s%s)",
850 strnull(buf
), prefixlen
,
851 valid_str
? "for " : "forever", strempty(valid_str
));
854 /* address_update() logs internally, so we don't need to. */
855 (void) address_update(address
, flags
, scope
, &cinfo
);
861 log_link_debug(link
, "Forgetting address: %s/%u (valid %s%s)",
862 strnull(buf
), prefixlen
,
863 valid_str
? "for " : "forever", strempty(valid_str
));
864 (void) address_drop(address
);
866 log_link_debug(link
, "Kernel removed an address we don't remember: %s/%u (valid %s%s), ignoring.",
867 strnull(buf
), prefixlen
,
868 valid_str
? "for " : "forever", strempty(valid_str
));
873 assert_not_reached("Received invalid RTNL message type");
879 static int manager_rtnl_process_link(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
880 Manager
*m
= userdata
;
882 NetDev
*netdev
= NULL
;
891 if (sd_netlink_message_is_error(message
)) {
892 r
= sd_netlink_message_get_errno(message
);
894 log_message_warning_errno(message
, r
, "rtnl: Could not receive link message, ignoring");
899 r
= sd_netlink_message_get_type(message
, &type
);
901 log_warning_errno(r
, "rtnl: Could not get message type, ignoring: %m");
903 } else if (!IN_SET(type
, RTM_NEWLINK
, RTM_DELLINK
)) {
904 log_warning("rtnl: Received unexpected message type %u when processing link, ignoring.", type
);
908 r
= sd_rtnl_message_link_get_ifindex(message
, &ifindex
);
910 log_warning_errno(r
, "rtnl: Could not get ifindex from link message, ignoring: %m");
912 } else if (ifindex
<= 0) {
913 log_warning("rtnl: received link message with invalid ifindex %d, ignoring.", ifindex
);
917 r
= sd_netlink_message_read_string(message
, IFLA_IFNAME
, &name
);
919 log_warning_errno(r
, "rtnl: Received link message without ifname, ignoring: %m");
923 (void) link_get(m
, ifindex
, &link
);
924 (void) netdev_get(m
, name
, &netdev
);
929 /* link is new, so add it */
930 r
= link_add(m
, message
, &link
);
932 log_warning_errno(r
, "Could not process new link message, ignoring: %m");
938 /* netdev exists, so make sure the ifindex matches */
939 r
= netdev_set_ifindex(netdev
, message
);
941 log_warning_errno(r
, "Could not process new link message for netdev, ignoring: %m");
946 r
= link_update(link
, message
);
948 log_warning_errno(r
, "Could not process link message, ignoring: %m");
961 assert_not_reached("Received link message with invalid RTNL message type.");
967 int manager_rtnl_process_rule(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
968 _cleanup_(routing_policy_rule_freep
) RoutingPolicyRule
*tmp
= NULL
;
969 _cleanup_free_
char *from
= NULL
, *to
= NULL
;
970 RoutingPolicyRule
*rule
= NULL
;
971 const char *iif
= NULL
, *oif
= NULL
;
972 uint32_t suppress_prefixlen
;
973 Manager
*m
= userdata
;
982 if (sd_netlink_message_is_error(message
)) {
983 r
= sd_netlink_message_get_errno(message
);
985 log_message_warning_errno(message
, r
, "rtnl: failed to receive rule message, ignoring");
990 r
= sd_netlink_message_get_type(message
, &type
);
992 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
994 } else if (!IN_SET(type
, RTM_NEWRULE
, RTM_DELRULE
)) {
995 log_warning("rtnl: received unexpected message type %u when processing rule, ignoring.", type
);
999 r
= routing_policy_rule_new(&tmp
);
1005 r
= sd_rtnl_message_get_family(message
, &tmp
->family
);
1007 log_warning_errno(r
, "rtnl: could not get rule family, ignoring: %m");
1009 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
1010 log_debug("rtnl: received rule message with invalid family %d, ignoring.", tmp
->family
);
1014 switch (tmp
->family
) {
1016 r
= sd_netlink_message_read_in_addr(message
, FRA_SRC
, &tmp
->from
.in
);
1017 if (r
< 0 && r
!= -ENODATA
) {
1018 log_warning_errno(r
, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
1020 } else if (r
>= 0) {
1021 r
= sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message
, &tmp
->from_prefixlen
);
1023 log_warning_errno(r
, "rtnl: received rule message without valid source prefix length, ignoring: %m");
1028 r
= sd_netlink_message_read_in_addr(message
, FRA_DST
, &tmp
->to
.in
);
1029 if (r
< 0 && r
!= -ENODATA
) {
1030 log_warning_errno(r
, "rtnl: could not get FRA_DST attribute, ignoring: %m");
1032 } else if (r
>= 0) {
1033 r
= sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message
, &tmp
->to_prefixlen
);
1035 log_warning_errno(r
, "rtnl: received rule message without valid destination prefix length, ignoring: %m");
1043 r
= sd_netlink_message_read_in6_addr(message
, FRA_SRC
, &tmp
->from
.in6
);
1044 if (r
< 0 && r
!= -ENODATA
) {
1045 log_warning_errno(r
, "rtnl: could not get FRA_SRC attribute, ignoring: %m");
1047 } else if (r
>= 0) {
1048 r
= sd_rtnl_message_routing_policy_rule_get_rtm_src_prefixlen(message
, &tmp
->from_prefixlen
);
1050 log_warning_errno(r
, "rtnl: received rule message without valid source prefix length, ignoring: %m");
1055 r
= sd_netlink_message_read_in6_addr(message
, FRA_DST
, &tmp
->to
.in6
);
1056 if (r
< 0 && r
!= -ENODATA
) {
1057 log_warning_errno(r
, "rtnl: could not get FRA_DST attribute, ignoring: %m");
1059 } else if (r
>= 0) {
1060 r
= sd_rtnl_message_routing_policy_rule_get_rtm_dst_prefixlen(message
, &tmp
->to_prefixlen
);
1062 log_warning_errno(r
, "rtnl: received rule message without valid destination prefix length, ignoring: %m");
1070 assert_not_reached("Received rule message with unsupported address family");
1073 if (tmp
->from_prefixlen
== 0 && tmp
->to_prefixlen
== 0)
1076 r
= sd_rtnl_message_routing_policy_rule_get_flags(message
, &flags
);
1078 log_warning_errno(r
, "rtnl: received rule message without valid flag, ignoring: %m");
1081 tmp
->invert_rule
= flags
& FIB_RULE_INVERT
;
1083 r
= sd_netlink_message_read_u32(message
, FRA_FWMARK
, &tmp
->fwmark
);
1084 if (r
< 0 && r
!= -ENODATA
) {
1085 log_warning_errno(r
, "rtnl: could not get FRA_FWMARK attribute, ignoring: %m");
1089 r
= sd_netlink_message_read_u32(message
, FRA_FWMASK
, &tmp
->fwmask
);
1090 if (r
< 0 && r
!= -ENODATA
) {
1091 log_warning_errno(r
, "rtnl: could not get FRA_FWMASK attribute, ignoring: %m");
1095 r
= sd_netlink_message_read_u32(message
, FRA_PRIORITY
, &tmp
->priority
);
1096 if (r
< 0 && r
!= -ENODATA
) {
1097 log_warning_errno(r
, "rtnl: could not get FRA_PRIORITY attribute, ignoring: %m");
1101 r
= sd_netlink_message_read_u32(message
, FRA_TABLE
, &tmp
->table
);
1102 if (r
< 0 && r
!= -ENODATA
) {
1103 log_warning_errno(r
, "rtnl: could not get FRA_TABLE attribute, ignoring: %m");
1107 r
= sd_rtnl_message_routing_policy_rule_get_tos(message
, &tmp
->tos
);
1108 if (r
< 0 && r
!= -ENODATA
) {
1109 log_warning_errno(r
, "rtnl: could not get ip rule TOS, ignoring: %m");
1113 r
= sd_netlink_message_read_string(message
, FRA_IIFNAME
, &iif
);
1114 if (r
< 0 && r
!= -ENODATA
) {
1115 log_warning_errno(r
, "rtnl: could not get FRA_IIFNAME attribute, ignoring: %m");
1118 r
= free_and_strdup(&tmp
->iif
, iif
);
1122 r
= sd_netlink_message_read_string(message
, FRA_OIFNAME
, &oif
);
1123 if (r
< 0 && r
!= -ENODATA
) {
1124 log_warning_errno(r
, "rtnl: could not get FRA_OIFNAME attribute, ignoring: %m");
1127 r
= free_and_strdup(&tmp
->oif
, oif
);
1131 r
= sd_netlink_message_read_u8(message
, FRA_IP_PROTO
, &tmp
->protocol
);
1132 if (r
< 0 && r
!= -ENODATA
) {
1133 log_warning_errno(r
, "rtnl: could not get FRA_IP_PROTO attribute, ignoring: %m");
1137 r
= sd_netlink_message_read(message
, FRA_SPORT_RANGE
, sizeof(tmp
->sport
), &tmp
->sport
);
1138 if (r
< 0 && r
!= -ENODATA
) {
1139 log_warning_errno(r
, "rtnl: could not get FRA_SPORT_RANGE attribute, ignoring: %m");
1143 r
= sd_netlink_message_read(message
, FRA_DPORT_RANGE
, sizeof(tmp
->dport
), &tmp
->dport
);
1144 if (r
< 0 && r
!= -ENODATA
) {
1145 log_warning_errno(r
, "rtnl: could not get FRA_DPORT_RANGE attribute, ignoring: %m");
1149 r
= sd_netlink_message_read(message
, FRA_UID_RANGE
, sizeof(tmp
->uid_range
), &tmp
->uid_range
);
1150 if (r
< 0 && r
!= -ENODATA
) {
1151 log_warning_errno(r
, "rtnl: could not get FRA_UID_RANGE attribute, ignoring: %m");
1155 r
= sd_netlink_message_read_u32(message
, FRA_SUPPRESS_PREFIXLEN
, &suppress_prefixlen
);
1156 if (r
< 0 && r
!= -ENODATA
) {
1157 log_warning_errno(r
, "rtnl: could not get FRA_SUPPRESS_PREFIXLEN attribute, ignoring: %m");
1161 tmp
->suppress_prefixlen
= (int) suppress_prefixlen
;
1163 (void) routing_policy_rule_get(m
, tmp
, &rule
);
1165 if (DEBUG_LOGGING
) {
1166 (void) in_addr_to_string(tmp
->family
, &tmp
->from
, &from
);
1167 (void) in_addr_to_string(tmp
->family
, &tmp
->to
, &to
);
1173 log_debug("Remembering foreign routing policy rule: %s/%u -> %s/%u, iif: %s, oif: %s, table: %u",
1174 from
, tmp
->from_prefixlen
, to
, tmp
->to_prefixlen
, strna(tmp
->iif
), strna(tmp
->oif
), tmp
->table
);
1175 r
= routing_policy_rule_add_foreign(m
, tmp
, &rule
);
1177 log_warning_errno(r
, "Could not remember foreign rule, ignoring: %m");
1183 log_debug("Forgetting routing policy rule: %s/%u -> %s/%u, iif: %s, oif: %s, table: %u",
1184 from
, tmp
->from_prefixlen
, to
, tmp
->to_prefixlen
, strna(tmp
->iif
), strna(tmp
->oif
), tmp
->table
);
1185 routing_policy_rule_free(rule
);
1190 assert_not_reached("Received invalid RTNL message type");
1196 int manager_rtnl_process_nexthop(sd_netlink
*rtnl
, sd_netlink_message
*message
, void *userdata
) {
1197 _cleanup_(nexthop_freep
) NextHop
*tmp
= NULL
;
1198 _cleanup_free_
char *gateway
= NULL
;
1199 NextHop
*nexthop
= NULL
;
1200 Manager
*m
= userdata
;
1209 if (sd_netlink_message_is_error(message
)) {
1210 r
= sd_netlink_message_get_errno(message
);
1212 log_message_warning_errno(message
, r
, "rtnl: failed to receive rule message, ignoring");
1217 r
= sd_netlink_message_get_type(message
, &type
);
1219 log_warning_errno(r
, "rtnl: could not get message type, ignoring: %m");
1221 } else if (!IN_SET(type
, RTM_NEWNEXTHOP
, RTM_DELNEXTHOP
)) {
1222 log_warning("rtnl: received unexpected message type %u when processing nexthop, ignoring.", type
);
1226 r
= nexthop_new(&tmp
);
1230 r
= sd_rtnl_message_get_family(message
, &tmp
->family
);
1232 log_warning_errno(r
, "rtnl: could not get nexthop family, ignoring: %m");
1234 } else if (!IN_SET(tmp
->family
, AF_INET
, AF_INET6
)) {
1235 log_debug("rtnl: received nexthop message with invalid family %d, ignoring.", tmp
->family
);
1239 switch (tmp
->family
) {
1241 r
= sd_netlink_message_read_in_addr(message
, NHA_GATEWAY
, &tmp
->gw
.in
);
1242 if (r
< 0 && r
!= -ENODATA
) {
1243 log_warning_errno(r
, "rtnl: could not get NHA_GATEWAY attribute, ignoring: %m");
1249 r
= sd_netlink_message_read_in6_addr(message
, NHA_GATEWAY
, &tmp
->gw
.in6
);
1250 if (r
< 0 && r
!= -ENODATA
) {
1251 log_warning_errno(r
, "rtnl: could not get NHA_GATEWAY attribute, ignoring: %m");
1257 assert_not_reached("Received rule message with unsupported address family");
1260 r
= sd_netlink_message_read_u32(message
, NHA_ID
, &tmp
->id
);
1261 if (r
< 0 && r
!= -ENODATA
) {
1262 log_warning_errno(r
, "rtnl: could not get NHA_ID attribute, ignoring: %m");
1266 r
= sd_netlink_message_read_u32(message
, NHA_OIF
, &tmp
->oif
);
1267 if (r
< 0 && r
!= -ENODATA
) {
1268 log_warning_errno(r
, "rtnl: could not get NHA_OIF attribute, ignoring: %m");
1272 r
= link_get(m
, tmp
->oif
, &link
);
1273 if (r
< 0 || !link
) {
1274 if (!m
->enumerating
)
1275 log_warning("rtnl: received nexthop message for link (%d) we do not know about, ignoring", tmp
->oif
);
1279 (void) nexthop_get(link
, tmp
, &nexthop
);
1282 (void) in_addr_to_string(tmp
->family
, &tmp
->gw
, &gateway
);
1285 case RTM_NEWNEXTHOP
:
1287 log_debug("Remembering foreign nexthop: %s, oif: %d, id: %d", gateway
, tmp
->oif
, tmp
->id
);
1288 r
= nexthop_add_foreign(link
, tmp
, &nexthop
);
1290 log_warning_errno(r
, "Could not remember foreign nexthop, ignoring: %m");
1295 case RTM_DELNEXTHOP
:
1296 log_debug("Forgetting foreign nexthop: %s, oif: %d, id: %d", gateway
, tmp
->oif
, tmp
->id
);
1297 nexthop_free(nexthop
);
1302 assert_not_reached("Received invalid RTNL message type");
1308 static int systemd_netlink_fd(void) {
1309 int n
, fd
, rtnl_fd
= -EINVAL
;
1311 n
= sd_listen_fds(true);
1315 for (fd
= SD_LISTEN_FDS_START
; fd
< SD_LISTEN_FDS_START
+ n
; fd
++) {
1316 if (sd_is_socket(fd
, AF_NETLINK
, SOCK_RAW
, -1) > 0) {
1327 static int manager_connect_genl(Manager
*m
) {
1332 r
= sd_genl_socket_open(&m
->genl
);
1336 r
= sd_netlink_inc_rcvbuf(m
->genl
, RCVBUF_SIZE
);
1340 r
= sd_netlink_attach_event(m
->genl
, m
->event
, 0);
1347 static int manager_connect_rtnl(Manager
*m
) {
1352 fd
= systemd_netlink_fd();
1354 r
= sd_netlink_open(&m
->rtnl
);
1356 r
= sd_netlink_open_fd(&m
->rtnl
, fd
);
1360 r
= sd_netlink_inc_rcvbuf(m
->rtnl
, RCVBUF_SIZE
);
1364 r
= sd_netlink_attach_event(m
->rtnl
, m
->event
, 0);
1368 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWLINK
, &manager_rtnl_process_link
, NULL
, m
, "network-rtnl_process_link");
1372 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELLINK
, &manager_rtnl_process_link
, NULL
, m
, "network-rtnl_process_link");
1376 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWADDR
, &manager_rtnl_process_address
, NULL
, m
, "network-rtnl_process_address");
1380 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELADDR
, &manager_rtnl_process_address
, NULL
, m
, "network-rtnl_process_address");
1384 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWNEIGH
, &manager_rtnl_process_neighbor
, NULL
, m
, "network-rtnl_process_neighbor");
1388 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELNEIGH
, &manager_rtnl_process_neighbor
, NULL
, m
, "network-rtnl_process_neighbor");
1392 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWROUTE
, &manager_rtnl_process_route
, NULL
, m
, "network-rtnl_process_route");
1396 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELROUTE
, &manager_rtnl_process_route
, NULL
, m
, "network-rtnl_process_route");
1400 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWRULE
, &manager_rtnl_process_rule
, NULL
, m
, "network-rtnl_process_rule");
1404 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELRULE
, &manager_rtnl_process_rule
, NULL
, m
, "network-rtnl_process_rule");
1408 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_NEWNEXTHOP
, &manager_rtnl_process_nexthop
, NULL
, m
, "network-rtnl_process_nexthop");
1412 r
= sd_netlink_add_match(m
->rtnl
, NULL
, RTM_DELNEXTHOP
, &manager_rtnl_process_nexthop
, NULL
, m
, "network-rtnl_process_nexthop");
1419 static int ordered_set_put_in_addr_data(OrderedSet
*s
, const struct in_addr_data
*address
) {
1426 r
= in_addr_to_string(address
->family
, &address
->address
, &p
);
1430 r
= ordered_set_consume(s
, p
);
1437 static int ordered_set_put_in_addr_datav(OrderedSet
*s
, const struct in_addr_data
*addresses
, unsigned n
) {
1442 assert(addresses
|| n
== 0);
1444 for (i
= 0; i
< n
; i
++) {
1445 r
= ordered_set_put_in_addr_data(s
, addresses
+i
);
1455 static int ordered_set_put_in4_addr(OrderedSet
*s
, const struct in_addr
*address
) {
1462 r
= in_addr_to_string(AF_INET
, (const union in_addr_union
*) address
, &p
);
1466 r
= ordered_set_consume(s
, p
);
1473 static int ordered_set_put_in4_addrv(OrderedSet
*s
,
1474 const struct in_addr
*addresses
,
1476 bool (*predicate
)(const struct in_addr
*addr
)) {
1481 assert(n
== 0 || addresses
);
1483 for (i
= 0; i
< n
; i
++) {
1484 if (predicate
&& !predicate(&addresses
[i
]))
1486 r
= ordered_set_put_in4_addr(s
, addresses
+i
);
1496 static int manager_save(Manager
*m
) {
1497 _cleanup_ordered_set_free_free_ OrderedSet
*dns
= NULL
, *ntp
= NULL
, *sip
= NULL
, *pop3
= NULL
,
1498 *smtp
= NULL
, *lpr
= NULL
, *search_domains
= NULL
, *route_domains
= NULL
;
1499 const char *operstate_str
, *carrier_state_str
, *address_state_str
;
1500 LinkOperationalState operstate
= LINK_OPERSTATE_OFF
;
1501 LinkCarrierState carrier_state
= LINK_CARRIER_STATE_OFF
;
1502 LinkAddressState address_state
= LINK_ADDRESS_STATE_OFF
;
1503 _cleanup_free_
char *temp_path
= NULL
;
1504 _cleanup_strv_free_
char **p
= NULL
;
1505 _cleanup_fclose_
FILE *f
= NULL
;
1506 const struct in_addr
*addresses
;
1512 assert(m
->state_file
);
1514 /* We add all NTP and DNS server to a set, to filter out duplicates */
1515 dns
= ordered_set_new(&string_hash_ops
);
1519 ntp
= ordered_set_new(&string_hash_ops
);
1523 sip
= ordered_set_new(&string_hash_ops
);
1527 pop3
= ordered_set_new(&string_hash_ops
);
1531 smtp
= ordered_set_new(&string_hash_ops
);
1535 lpr
= ordered_set_new(&string_hash_ops
);
1539 search_domains
= ordered_set_new(&dns_name_hash_ops
);
1540 if (!search_domains
)
1543 route_domains
= ordered_set_new(&dns_name_hash_ops
);
1547 HASHMAP_FOREACH(link
, m
->links
, i
) {
1548 if (link
->flags
& IFF_LOOPBACK
)
1551 if (link
->operstate
> operstate
)
1552 operstate
= link
->operstate
;
1554 if (link
->carrier_state
> carrier_state
)
1555 carrier_state
= link
->carrier_state
;
1557 if (link
->address_state
> address_state
)
1558 address_state
= link
->address_state
;
1563 /* First add the static configured entries */
1564 r
= ordered_set_put_in_addr_datav(dns
, link
->network
->dns
, link
->network
->n_dns
);
1568 r
= ordered_set_put_strdupv(ntp
, link
->ntp
?: link
->network
->ntp
);
1572 r
= ordered_set_put_string_set(search_domains
, link
->search_domains
?: link
->network
->search_domains
);
1576 r
= ordered_set_put_string_set(route_domains
, link
->route_domains
?: link
->network
->route_domains
);
1580 if (!link
->dhcp_lease
)
1583 /* Secondly, add the entries acquired via DHCP */
1584 if (link
->network
->dhcp_use_dns
) {
1585 r
= sd_dhcp_lease_get_dns(link
->dhcp_lease
, &addresses
);
1587 r
= ordered_set_put_in4_addrv(dns
, addresses
, r
, in4_addr_is_non_local
);
1590 } else if (r
< 0 && r
!= -ENODATA
)
1594 if (link
->network
->dhcp_use_ntp
) {
1595 r
= sd_dhcp_lease_get_ntp(link
->dhcp_lease
, &addresses
);
1597 r
= ordered_set_put_in4_addrv(ntp
, addresses
, r
, in4_addr_is_non_local
);
1600 } else if (r
< 0 && r
!= -ENODATA
)
1604 if (link
->network
->dhcp_use_sip
) {
1605 r
= sd_dhcp_lease_get_sip(link
->dhcp_lease
, &addresses
);
1607 r
= ordered_set_put_in4_addrv(sip
, addresses
, r
, in4_addr_is_non_local
);
1610 } else if (r
< 0 && r
!= -ENODATA
)
1614 r
= sd_dhcp_lease_get_pop3(link
->dhcp_lease
, &addresses
);
1616 r
= ordered_set_put_in4_addrv(pop3
, addresses
, r
, in4_addr_is_non_local
);
1619 } else if (r
< 0 && r
!= -ENODATA
)
1622 r
= sd_dhcp_lease_get_smtp(link
->dhcp_lease
, &addresses
);
1624 r
= ordered_set_put_in4_addrv(smtp
, addresses
, r
, in4_addr_is_non_local
);
1627 } else if (r
< 0 && r
!= -ENODATA
)
1630 r
= sd_dhcp_lease_get_lpr(link
->dhcp_lease
, &addresses
);
1632 r
= ordered_set_put_in4_addrv(lpr
, addresses
, r
, in4_addr_is_non_local
);
1635 } else if (r
< 0 && r
!= -ENODATA
)
1638 if (link
->network
->dhcp_use_domains
!= DHCP_USE_DOMAINS_NO
) {
1639 const char *domainname
;
1640 char **domains
= NULL
;
1642 OrderedSet
*target_domains
= (link
->network
->dhcp_use_domains
== DHCP_USE_DOMAINS_YES
) ? search_domains
: route_domains
;
1643 r
= sd_dhcp_lease_get_domainname(link
->dhcp_lease
, &domainname
);
1645 r
= ordered_set_put_strdup(target_domains
, domainname
);
1648 } else if (r
!= -ENODATA
)
1651 r
= sd_dhcp_lease_get_search_domains(link
->dhcp_lease
, &domains
);
1653 r
= ordered_set_put_strdupv(target_domains
, domains
);
1656 } else if (r
!= -ENODATA
)
1661 if (carrier_state
>= LINK_CARRIER_STATE_ENSLAVED
)
1662 carrier_state
= LINK_CARRIER_STATE_CARRIER
;
1664 operstate_str
= link_operstate_to_string(operstate
);
1665 assert(operstate_str
);
1667 carrier_state_str
= link_carrier_state_to_string(carrier_state
);
1668 assert(carrier_state_str
);
1670 address_state_str
= link_address_state_to_string(address_state
);
1671 assert(address_state_str
);
1673 r
= fopen_temporary(m
->state_file
, &f
, &temp_path
);
1677 (void) fchmod(fileno(f
), 0644);
1680 "# This is private data. Do not parse.\n"
1682 "CARRIER_STATE=%s\n"
1683 "ADDRESS_STATE=%s\n",
1684 operstate_str
, carrier_state_str
, address_state_str
);
1686 ordered_set_print(f
, "DNS=", dns
);
1687 ordered_set_print(f
, "NTP=", ntp
);
1688 ordered_set_print(f
, "SIP=", sip
);
1689 ordered_set_print(f
, "POP3_SERVERS=", pop3
);
1690 ordered_set_print(f
, "SMTP_SERVERS=", smtp
);
1691 ordered_set_print(f
, "LPR_SERVERS=", lpr
);
1692 ordered_set_print(f
, "DOMAINS=", search_domains
);
1693 ordered_set_print(f
, "ROUTE_DOMAINS=", route_domains
);
1695 r
= routing_policy_serialize_rules(m
->rules
, f
);
1699 r
= fflush_and_check(f
);
1703 if (rename(temp_path
, m
->state_file
) < 0) {
1708 if (m
->operational_state
!= operstate
) {
1709 m
->operational_state
= operstate
;
1710 if (strv_extend(&p
, "OperationalState") < 0)
1714 if (m
->carrier_state
!= carrier_state
) {
1715 m
->carrier_state
= carrier_state
;
1716 if (strv_extend(&p
, "CarrierState") < 0)
1720 if (m
->address_state
!= address_state
) {
1721 m
->address_state
= address_state
;
1722 if (strv_extend(&p
, "AddressState") < 0)
1727 r
= manager_send_changed_strv(m
, p
);
1729 log_error_errno(r
, "Could not emit changed properties: %m");
1737 (void) unlink(m
->state_file
);
1738 (void) unlink(temp_path
);
1740 return log_error_errno(r
, "Failed to save network state to %s: %m", m
->state_file
);
1743 static int manager_dirty_handler(sd_event_source
*s
, void *userdata
) {
1744 Manager
*m
= userdata
;
1753 SET_FOREACH(link
, m
->dirty_links
, i
)
1754 if (link_save(link
) >= 0)
1760 static int signal_terminate_callback(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
1761 Manager
*m
= userdata
;
1764 m
->restarting
= false;
1766 log_debug("Terminate operation initiated.");
1768 return sd_event_exit(sd_event_source_get_event(s
), 0);
1771 static int signal_restart_callback(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
1772 Manager
*m
= userdata
;
1775 m
->restarting
= true;
1777 log_debug("Restart operation initiated.");
1779 return sd_event_exit(sd_event_source_get_event(s
), 0);
1782 int manager_new(Manager
**ret
) {
1783 _cleanup_(manager_freep
) Manager
*m
= NULL
;
1786 m
= new(Manager
, 1);
1791 .speed_meter_interval_usec
= SPEED_METER_DEFAULT_TIME_INTERVAL
,
1792 .manage_foreign_routes
= true,
1795 m
->state_file
= strdup("/run/systemd/netif/state");
1799 r
= sd_event_default(&m
->event
);
1803 assert_se(sigprocmask_many(SIG_SETMASK
, NULL
, SIGINT
, SIGTERM
, SIGUSR2
, -1) >= 0);
1805 (void) sd_event_set_watchdog(m
->event
, true);
1806 (void) sd_event_add_signal(m
->event
, NULL
, SIGTERM
, signal_terminate_callback
, m
);
1807 (void) sd_event_add_signal(m
->event
, NULL
, SIGINT
, signal_terminate_callback
, m
);
1808 (void) sd_event_add_signal(m
->event
, NULL
, SIGUSR2
, signal_restart_callback
, m
);
1810 r
= sd_event_add_post(m
->event
, NULL
, manager_dirty_handler
, m
);
1814 r
= manager_connect_rtnl(m
);
1818 r
= manager_connect_genl(m
);
1822 r
= manager_connect_udev(m
);
1826 r
= sd_resolve_default(&m
->resolve
);
1830 r
= sd_resolve_attach_event(m
->resolve
, m
->event
, 0);
1834 r
= setup_default_address_pool(m
);
1838 m
->duid
.type
= DUID_TYPE_EN
;
1840 (void) routing_policy_load_rules(m
->state_file
, &m
->rules_saved
);
1847 void manager_free(Manager
*m
) {
1855 free(m
->state_file
);
1857 while ((a
= hashmap_first_key(m
->dhcp6_prefixes
)))
1858 (void) dhcp6_prefix_remove(m
, a
);
1859 m
->dhcp6_prefixes
= hashmap_free(m
->dhcp6_prefixes
);
1861 while ((link
= hashmap_steal_first(m
->links
))) {
1862 if (link
->dhcp6_client
)
1863 (void) dhcp6_lease_pd_prefix_lost(link
->dhcp6_client
, link
);
1865 (void) link_stop_clients(link
, true);
1870 m
->dirty_links
= set_free_with_destructor(m
->dirty_links
, link_unref
);
1871 m
->links_requesting_uuid
= set_free_with_destructor(m
->links_requesting_uuid
, link_unref
);
1872 m
->links
= hashmap_free_with_destructor(m
->links
, link_unref
);
1874 m
->duids_requesting_uuid
= set_free(m
->duids_requesting_uuid
);
1875 m
->networks
= ordered_hashmap_free_with_destructor(m
->networks
, network_unref
);
1877 m
->netdevs
= hashmap_free_with_destructor(m
->netdevs
, netdev_unref
);
1879 while ((pool
= m
->address_pools
))
1880 address_pool_free(pool
);
1882 /* routing_policy_rule_free() access m->rules and m->rules_foreign.
1883 * So, it is necessary to set NULL after the sets are freed. */
1884 m
->rules
= set_free_with_destructor(m
->rules
, routing_policy_rule_free
);
1885 m
->rules_foreign
= set_free_with_destructor(m
->rules_foreign
, routing_policy_rule_free
);
1886 set_free_with_destructor(m
->rules_saved
, routing_policy_rule_free
);
1888 sd_netlink_unref(m
->rtnl
);
1889 sd_netlink_unref(m
->genl
);
1890 sd_resolve_unref(m
->resolve
);
1892 sd_event_source_unref(m
->speed_meter_event_source
);
1893 sd_event_unref(m
->event
);
1895 sd_device_monitor_unref(m
->device_monitor
);
1897 bus_verify_polkit_async_registry_free(m
->polkit_registry
);
1898 sd_bus_flush_close_unref(m
->bus
);
1900 free(m
->dynamic_timezone
);
1901 free(m
->dynamic_hostname
);
1906 int manager_start(Manager
*m
) {
1913 r
= manager_start_speed_meter(m
);
1915 return log_error_errno(r
, "Failed to initialize speed meter: %m");
1917 /* The dirty handler will deal with future serialization, but the first one
1918 must be done explicitly. */
1922 HASHMAP_FOREACH(link
, m
->links
, i
)
1928 int manager_load_config(Manager
*m
) {
1931 /* update timestamp */
1932 paths_check_timestamp(NETWORK_DIRS
, &m
->network_dirs_ts_usec
, true);
1934 r
= netdev_load(m
, false);
1938 r
= network_load(m
, &m
->networks
);
1945 bool manager_should_reload(Manager
*m
) {
1946 return paths_check_timestamp(NETWORK_DIRS
, &m
->network_dirs_ts_usec
, false);
1949 int manager_rtnl_enumerate_links(Manager
*m
) {
1950 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1951 sd_netlink_message
*link
;
1957 r
= sd_rtnl_message_new_link(m
->rtnl
, &req
, RTM_GETLINK
, 0);
1961 r
= sd_netlink_message_request_dump(req
, true);
1965 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
1969 for (link
= reply
; link
; link
= sd_netlink_message_next(link
)) {
1972 m
->enumerating
= true;
1974 k
= manager_rtnl_process_link(m
->rtnl
, link
, m
);
1978 m
->enumerating
= false;
1984 int manager_rtnl_enumerate_addresses(Manager
*m
) {
1985 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
1986 sd_netlink_message
*addr
;
1992 r
= sd_rtnl_message_new_addr(m
->rtnl
, &req
, RTM_GETADDR
, 0, 0);
1996 r
= sd_netlink_message_request_dump(req
, true);
2000 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2004 for (addr
= reply
; addr
; addr
= sd_netlink_message_next(addr
)) {
2007 m
->enumerating
= true;
2009 k
= manager_rtnl_process_address(m
->rtnl
, addr
, m
);
2013 m
->enumerating
= false;
2019 int manager_rtnl_enumerate_neighbors(Manager
*m
) {
2020 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2021 sd_netlink_message
*neigh
;
2027 r
= sd_rtnl_message_new_neigh(m
->rtnl
, &req
, RTM_GETNEIGH
, 0, AF_UNSPEC
);
2031 r
= sd_netlink_message_request_dump(req
, true);
2035 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2039 for (neigh
= reply
; neigh
; neigh
= sd_netlink_message_next(neigh
)) {
2042 m
->enumerating
= true;
2044 k
= manager_rtnl_process_neighbor(m
->rtnl
, neigh
, m
);
2048 m
->enumerating
= false;
2054 int manager_rtnl_enumerate_routes(Manager
*m
) {
2055 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2056 sd_netlink_message
*route
;
2062 r
= sd_rtnl_message_new_route(m
->rtnl
, &req
, RTM_GETROUTE
, 0, 0);
2066 r
= sd_netlink_message_request_dump(req
, true);
2070 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2074 for (route
= reply
; route
; route
= sd_netlink_message_next(route
)) {
2077 m
->enumerating
= true;
2079 k
= manager_rtnl_process_route(m
->rtnl
, route
, m
);
2083 m
->enumerating
= false;
2089 int manager_rtnl_enumerate_rules(Manager
*m
) {
2090 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2091 sd_netlink_message
*rule
;
2097 r
= sd_rtnl_message_new_routing_policy_rule(m
->rtnl
, &req
, RTM_GETRULE
, 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("FIB Rules are not supported by the kernel. Ignoring.");
2115 for (rule
= reply
; rule
; rule
= sd_netlink_message_next(rule
)) {
2118 m
->enumerating
= true;
2120 k
= manager_rtnl_process_rule(m
->rtnl
, rule
, m
);
2124 m
->enumerating
= false;
2130 int manager_rtnl_enumerate_nexthop(Manager
*m
) {
2131 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
2132 sd_netlink_message
*nexthop
;
2138 r
= sd_rtnl_message_new_nexthop(m
->rtnl
, &req
, RTM_GETNEXTHOP
, 0, 0);
2142 r
= sd_netlink_message_request_dump(req
, true);
2146 r
= sd_netlink_call(m
->rtnl
, req
, 0, &reply
);
2148 if (r
== -EOPNOTSUPP
) {
2149 log_debug("Nexthop are not supported by the kernel. Ignoring.");
2156 for (nexthop
= reply
; nexthop
; nexthop
= sd_netlink_message_next(nexthop
)) {
2159 m
->enumerating
= true;
2161 k
= manager_rtnl_process_nexthop(m
->rtnl
, nexthop
, m
);
2165 m
->enumerating
= false;
2171 int manager_address_pool_acquire(Manager
*m
, int family
, unsigned prefixlen
, union in_addr_union
*found
) {
2176 assert(prefixlen
> 0);
2179 LIST_FOREACH(address_pools
, p
, m
->address_pools
) {
2180 if (p
->family
!= family
)
2183 r
= address_pool_acquire(p
, prefixlen
, found
);
2191 Link
* manager_find_uplink(Manager
*m
, Link
*exclude
) {
2192 _cleanup_free_
struct local_address
*gateways
= NULL
;
2197 /* Looks for a suitable "uplink", via black magic: an
2198 * interface that is up and where the default route with the
2199 * highest priority points to. */
2201 n
= local_gateways(m
->rtnl
, 0, AF_UNSPEC
, &gateways
);
2203 log_warning_errno(n
, "Failed to determine list of default gateways: %m");
2207 for (i
= 0; i
< n
; i
++) {
2210 link
= hashmap_get(m
->links
, INT_TO_PTR(gateways
[i
].ifindex
));
2212 log_debug("Weird, found a gateway for a link we don't know. Ignoring.");
2216 if (link
== exclude
)
2219 if (link
->operstate
< LINK_OPERSTATE_ROUTABLE
)
2228 void manager_dirty(Manager
*manager
) {
2231 /* the serialized state in /run is no longer up-to-date */
2232 manager
->dirty
= true;
2235 static int set_hostname_handler(sd_bus_message
*m
, void *userdata
, sd_bus_error
*ret_error
) {
2236 _unused_ Manager
*manager
= userdata
;
2237 const sd_bus_error
*e
;
2242 e
= sd_bus_message_get_error(m
);
2244 log_warning_errno(sd_bus_error_get_errno(e
), "Could not set hostname: %s", e
->message
);
2249 int manager_set_hostname(Manager
*m
, const char *hostname
) {
2252 log_debug("Setting transient hostname: '%s'", strna(hostname
));
2254 if (free_and_strdup(&m
->dynamic_hostname
, hostname
) < 0)
2257 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2258 log_debug("Not connected to system bus, setting hostname later.");
2262 r
= sd_bus_call_method_async(
2265 "org.freedesktop.hostname1",
2266 "/org/freedesktop/hostname1",
2267 "org.freedesktop.hostname1",
2269 set_hostname_handler
,
2276 return log_error_errno(r
, "Could not set transient hostname: %m");
2281 static int set_timezone_handler(sd_bus_message
*m
, void *userdata
, sd_bus_error
*ret_error
) {
2282 _unused_ Manager
*manager
= userdata
;
2283 const sd_bus_error
*e
;
2288 e
= sd_bus_message_get_error(m
);
2290 log_warning_errno(sd_bus_error_get_errno(e
), "Could not set timezone: %s", e
->message
);
2295 int manager_set_timezone(Manager
*m
, const char *tz
) {
2301 log_debug("Setting system timezone: '%s'", tz
);
2302 if (free_and_strdup(&m
->dynamic_timezone
, tz
) < 0)
2305 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2306 log_debug("Not connected to system bus, setting timezone later.");
2310 r
= sd_bus_call_method_async(
2313 "org.freedesktop.timedate1",
2314 "/org/freedesktop/timedate1",
2315 "org.freedesktop.timedate1",
2317 set_timezone_handler
,
2323 return log_error_errno(r
, "Could not set timezone: %m");
2328 int manager_request_product_uuid(Manager
*m
, Link
*link
) {
2333 if (m
->has_product_uuid
)
2336 log_debug("Requesting product UUID");
2341 assert_se(duid
= link_get_duid(link
));
2343 r
= set_ensure_allocated(&m
->links_requesting_uuid
, NULL
);
2347 r
= set_ensure_allocated(&m
->duids_requesting_uuid
, NULL
);
2351 r
= set_put(m
->links_requesting_uuid
, link
);
2355 r
= set_put(m
->duids_requesting_uuid
, duid
);
2362 if (!m
->bus
|| sd_bus_is_ready(m
->bus
) <= 0) {
2363 log_debug("Not connected to system bus, requesting product UUID later.");
2367 r
= sd_bus_call_method_async(
2370 "org.freedesktop.hostname1",
2371 "/org/freedesktop/hostname1",
2372 "org.freedesktop.hostname1",
2374 get_product_uuid_handler
,
2379 return log_warning_errno(r
, "Failed to get product UUID: %m");