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f579559b TG |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
091a364c | 22 | #include <sys/socket.h> |
bbf7c048 | 23 | #include <linux/if.h> |
3bef724f | 24 | |
2dcf7ec6 | 25 | #include "conf-parser.h" |
f579559b TG |
26 | #include "path-util.h" |
27 | #include "networkd.h" | |
3be1d7e0 | 28 | #include "networkd-netdev.h" |
0b1831c2 | 29 | #include "networkd-link.h" |
f579559b | 30 | #include "libudev-private.h" |
7b77ed8c | 31 | #include "udev-util.h" |
50add290 | 32 | #include "rtnl-util.h" |
a97dcc12 TG |
33 | #include "bus-util.h" |
34 | #include "def.h" | |
60ad0c85 | 35 | #include "virt.h" |
f579559b | 36 | |
505f8da7 | 37 | #include "sd-rtnl.h" |
5544ee85 | 38 | #include "sd-daemon.h" |
505f8da7 | 39 | |
be660c37 AR |
40 | /* use 8 MB for receive socket kernel queue. */ |
41 | #define RCVBUF_SIZE (8*1024*1024) | |
42 | ||
2ad8416d ZJS |
43 | const char* const network_dirs[] = { |
44 | "/etc/systemd/network", | |
45 | "/run/systemd/network", | |
46 | "/usr/lib/systemd/network", | |
eed0eee8 | 47 | #ifdef HAVE_SPLIT_USR |
2ad8416d ZJS |
48 | "/lib/systemd/network", |
49 | #endif | |
50 | NULL}; | |
51 | ||
11bf3cce LP |
52 | static int setup_default_address_pool(Manager *m) { |
53 | AddressPool *p; | |
54 | int r; | |
55 | ||
56 | assert(m); | |
57 | ||
58 | /* Add in the well-known private address ranges. */ | |
59 | ||
60 | r = address_pool_new_from_string(m, &p, AF_INET6, "fc00::", 7); | |
61 | if (r < 0) | |
62 | return r; | |
63 | ||
64 | r = address_pool_new_from_string(m, &p, AF_INET, "192.168.0.0", 16); | |
65 | if (r < 0) | |
66 | return r; | |
67 | ||
68 | r = address_pool_new_from_string(m, &p, AF_INET, "172.16.0.0", 12); | |
69 | if (r < 0) | |
70 | return r; | |
71 | ||
72 | r = address_pool_new_from_string(m, &p, AF_INET, "10.0.0.0", 8); | |
73 | if (r < 0) | |
74 | return r; | |
75 | ||
76 | return 0; | |
77 | } | |
78 | ||
9c0a72f9 TG |
79 | static int on_bus_retry(sd_event_source *s, usec_t usec, void *userdata) { |
80 | Manager *m = userdata; | |
81 | ||
82 | assert(s); | |
83 | assert(m); | |
84 | ||
85 | m->bus_retry_event_source = sd_event_source_unref(m->bus_retry_event_source); | |
86 | ||
87 | manager_connect_bus(m); | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
92 | static int manager_reset_all(Manager *m) { | |
93 | Link *link; | |
94 | Iterator i; | |
95 | int r; | |
96 | ||
97 | assert(m); | |
98 | ||
99 | HASHMAP_FOREACH(link, m->links, i) { | |
100 | r = link_carrier_reset(link); | |
101 | if (r < 0) | |
102 | log_link_warning_errno(link, r, "could not reset carrier: %m"); | |
103 | } | |
104 | ||
105 | return 0; | |
106 | } | |
107 | ||
108 | static int match_prepare_for_sleep(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { | |
109 | Manager *m = userdata; | |
110 | int b, r; | |
111 | ||
112 | assert(bus); | |
113 | assert(bus); | |
114 | ||
115 | r = sd_bus_message_read(message, "b", &b); | |
116 | if (r < 0) { | |
117 | log_debug_errno(r, "Failed to parse PrepareForSleep signal: %m"); | |
118 | return 0; | |
119 | } | |
120 | ||
121 | if (b) | |
122 | return 0; | |
123 | ||
124 | log_debug("Coming back from suspend, resetting all connections..."); | |
125 | ||
126 | manager_reset_all(m); | |
127 | ||
128 | return 0; | |
129 | } | |
130 | ||
131 | int manager_connect_bus(Manager *m) { | |
132 | int r; | |
133 | ||
134 | assert(m); | |
135 | ||
136 | r = sd_bus_default_system(&m->bus); | |
137 | if (r == -ENOENT) { | |
138 | /* We failed to connect? Yuck, we must be in early | |
139 | * boot. Let's try in 5s again. As soon as we have | |
140 | * kdbus we can stop doing this... */ | |
141 | ||
142 | log_debug_errno(r, "Failed to connect to bus, trying again in 5s: %m"); | |
143 | ||
144 | r = sd_event_add_time(m->event, &m->bus_retry_event_source, CLOCK_MONOTONIC, now(CLOCK_MONOTONIC) + 5*USEC_PER_SEC, 0, on_bus_retry, m); | |
145 | if (r < 0) | |
146 | return log_error_errno(r, "Failed to install bus reconnect time event: %m"); | |
147 | ||
148 | return 0; | |
149 | } if (r < 0) | |
150 | return r; | |
151 | ||
9c0a72f9 TG |
152 | r = sd_bus_add_match(m->bus, &m->prepare_for_sleep_slot, |
153 | "type='signal'," | |
154 | "sender='org.freedesktop.login1'," | |
155 | "interface='org.freedesktop.login1.Manager'," | |
156 | "member='PrepareForSleep'," | |
157 | "path='/org/freedesktop/login1'", | |
158 | match_prepare_for_sleep, | |
159 | m); | |
160 | if (r < 0) | |
161 | return log_error_errno(r, "Failed to add match for PrepareForSleep: %m"); | |
162 | ||
e331e246 TG |
163 | r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", manager_vtable, m); |
164 | if (r < 0) | |
165 | return log_error_errno(r, "Failed to add manager object vtable: %m"); | |
166 | ||
167 | r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link", link_vtable, link_object_find, m); | |
168 | if (r < 0) | |
169 | return log_error_errno(r, "Failed to add link object vtable: %m"); | |
170 | ||
171 | r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/link", link_node_enumerator, m); | |
172 | if (r < 0) | |
173 | return log_error_errno(r, "Failed to add link enumerator: %m"); | |
3175fcde TG |
174 | |
175 | r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable, network_object_find, m); | |
176 | if (r < 0) | |
177 | return log_error_errno(r, "Failed to add network object vtable: %m"); | |
178 | ||
179 | r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/network", network_node_enumerator, m); | |
180 | if (r < 0) | |
181 | return log_error_errno(r, "Failed to add network enumerator: %m"); | |
e331e246 TG |
182 | |
183 | r = sd_bus_request_name(m->bus, "org.freedesktop.network1", 0); | |
184 | if (r < 0) | |
185 | return log_error_errno(r, "Failed to register name: %m"); | |
186 | ||
187 | r = sd_bus_attach_event(m->bus, m->event, 0); | |
188 | if (r < 0) | |
189 | return log_error_errno(r, "Failed to attach bus to event loop: %m"); | |
190 | ||
9c0a72f9 TG |
191 | return 0; |
192 | } | |
193 | ||
5fae368b TG |
194 | static int manager_udev_process_link(Manager *m, struct udev_device *device) { |
195 | Link *link = NULL; | |
196 | int r, ifindex; | |
5544ee85 | 197 | |
5fae368b TG |
198 | assert(m); |
199 | assert(device); | |
5544ee85 | 200 | |
5fae368b TG |
201 | if (!streq_ptr(udev_device_get_action(device), "add")) |
202 | return 0; | |
5544ee85 | 203 | |
5fae368b TG |
204 | ifindex = udev_device_get_ifindex(device); |
205 | if (ifindex <= 0) { | |
206 | log_debug("ignoring udev ADD event for device with invalid ifindex"); | |
207 | return 0; | |
5544ee85 TG |
208 | } |
209 | ||
5fae368b TG |
210 | r = link_get(m, ifindex, &link); |
211 | if (r == -ENODEV) | |
212 | return 0; | |
213 | else if (r < 0) | |
f579559b TG |
214 | return r; |
215 | ||
5fae368b | 216 | r = link_initialized(link, device); |
44de0efc LP |
217 | if (r < 0) |
218 | return r; | |
219 | ||
5fae368b TG |
220 | return 0; |
221 | } | |
be660c37 | 222 | |
5fae368b TG |
223 | static int manager_dispatch_link_udev(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
224 | Manager *m = userdata; | |
225 | struct udev_monitor *monitor = m->udev_monitor; | |
226 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
f579559b | 227 | |
5fae368b TG |
228 | device = udev_monitor_receive_device(monitor); |
229 | if (!device) | |
02b59d57 TG |
230 | return -ENOMEM; |
231 | ||
5fae368b | 232 | manager_udev_process_link(m, device); |
f579559b TG |
233 | return 0; |
234 | } | |
235 | ||
5fae368b TG |
236 | static int manager_connect_udev(Manager *m) { |
237 | int r; | |
f579559b | 238 | |
5fae368b TG |
239 | /* udev does not initialize devices inside containers, |
240 | * so we rely on them being already initialized before | |
241 | * entering the container */ | |
242 | if (detect_container(NULL) > 0) | |
243 | return 0; | |
f579559b | 244 | |
5fae368b TG |
245 | m->udev = udev_new(); |
246 | if (!m->udev) | |
247 | return -ENOMEM; | |
02b59d57 | 248 | |
5fae368b TG |
249 | m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "udev"); |
250 | if (!m->udev_monitor) | |
251 | return -ENOMEM; | |
02b59d57 | 252 | |
5fae368b | 253 | r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_monitor, "net", NULL); |
02b59d57 | 254 | if (r < 0) |
5fae368b | 255 | return log_error_errno(r, "Could not add udev monitor filter: %m"); |
02b59d57 | 256 | |
5fae368b TG |
257 | r = udev_monitor_enable_receiving(m->udev_monitor); |
258 | if (r < 0) { | |
259 | log_error("Could not enable udev monitor"); | |
02b59d57 | 260 | return r; |
667fcc6d | 261 | } |
505f8da7 | 262 | |
5fae368b TG |
263 | r = sd_event_add_io(m->event, |
264 | &m->udev_event_source, | |
265 | udev_monitor_get_fd(m->udev_monitor), | |
266 | EPOLLIN, manager_dispatch_link_udev, | |
267 | m); | |
268 | if (r < 0) | |
667fcc6d | 269 | return r; |
505f8da7 | 270 | |
5fae368b | 271 | r = sd_event_source_set_description(m->udev_event_source, "networkd-udev"); |
505f8da7 TG |
272 | if (r < 0) |
273 | return r; | |
11a7f229 | 274 | |
505f8da7 TG |
275 | return 0; |
276 | } | |
f579559b | 277 | |
505f8da7 TG |
278 | static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata) { |
279 | Manager *m = userdata; | |
280 | Link *link = NULL; | |
4d473d5d | 281 | NetDev *netdev = NULL; |
f2236469 | 282 | uint16_t type; |
ca4e095a | 283 | const char *name; |
505f8da7 | 284 | int r, ifindex; |
f579559b | 285 | |
505f8da7 TG |
286 | assert(rtnl); |
287 | assert(message); | |
f579559b TG |
288 | assert(m); |
289 | ||
45af44d4 TG |
290 | if (sd_rtnl_message_is_error(message)) { |
291 | r = sd_rtnl_message_get_errno(message); | |
292 | if (r < 0) | |
293 | log_warning_errno(r, "rtnl: could not receive link: %m"); | |
294 | ||
295 | return 0; | |
296 | } | |
297 | ||
f2236469 TG |
298 | r = sd_rtnl_message_get_type(message, &type); |
299 | if (r < 0) { | |
45af44d4 | 300 | log_warning_errno(r, "rtnl: could not get message type: %m"); |
f2236469 | 301 | return 0; |
cdfee943 TG |
302 | } else if (type != RTM_NEWLINK && type != RTM_DELLINK) { |
303 | log_warning("rtnl: received unexpected message type when processing link"); | |
304 | return 0; | |
f2236469 TG |
305 | } |
306 | ||
505f8da7 | 307 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); |
45af44d4 | 308 | if (r < 0) { |
cdfee943 | 309 | log_warning_errno(r, "rtnl: could not get ifindex from link: %m"); |
45af44d4 TG |
310 | return 0; |
311 | } else if (ifindex <= 0) { | |
312 | log_warning("rtnl: received link message with invalid ifindex: %d", ifindex); | |
505f8da7 | 313 | return 0; |
4d473d5d TG |
314 | } else |
315 | link_get(m, ifindex, &link); | |
f579559b | 316 | |
505f8da7 | 317 | r = sd_rtnl_message_read_string(message, IFLA_IFNAME, &name); |
45af44d4 TG |
318 | if (r < 0) { |
319 | log_warning_errno(r, "rtnl: received link message without ifname: %m"); | |
4d473d5d TG |
320 | return 0; |
321 | } else | |
f2236469 | 322 | netdev_get(m, name, &netdev); |
4d473d5d TG |
323 | |
324 | switch (type) { | |
325 | case RTM_NEWLINK: | |
326 | if (!link) { | |
327 | /* link is new, so add it */ | |
328 | r = link_add(m, message, &link); | |
329 | if (r < 0) { | |
17d1f37d | 330 | log_warning_errno(r, "could not add new link: %m"); |
4d473d5d TG |
331 | return 0; |
332 | } | |
333 | } | |
334 | ||
335 | if (netdev) { | |
336 | /* netdev exists, so make sure the ifindex matches */ | |
505f8da7 TG |
337 | r = netdev_set_ifindex(netdev, message); |
338 | if (r < 0) { | |
17d1f37d | 339 | log_warning_errno(r, "could not set ifindex on netdev: %m"); |
505f8da7 TG |
340 | return 0; |
341 | } | |
342 | } | |
e1202047 | 343 | |
f2236469 TG |
344 | r = link_update(link, message); |
345 | if (r < 0) | |
346 | return 0; | |
4d473d5d TG |
347 | |
348 | break; | |
349 | ||
350 | case RTM_DELLINK: | |
351 | link_drop(link); | |
352 | netdev_drop(netdev); | |
353 | ||
354 | break; | |
355 | ||
356 | default: | |
357 | assert_not_reached("Received invalid RTNL message type."); | |
f2236469 | 358 | } |
505f8da7 TG |
359 | |
360 | return 1; | |
361 | } | |
362 | ||
5fae368b TG |
363 | static int systemd_netlink_fd(void) { |
364 | int n, fd, rtnl_fd = -EINVAL; | |
365 | ||
366 | n = sd_listen_fds(true); | |
367 | if (n <= 0) | |
368 | return -EINVAL; | |
369 | ||
370 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++) { | |
371 | if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { | |
372 | if (rtnl_fd >= 0) | |
373 | return -EINVAL; | |
374 | ||
375 | rtnl_fd = fd; | |
376 | } | |
377 | } | |
378 | ||
379 | return rtnl_fd; | |
380 | } | |
381 | ||
382 | static int manager_connect_rtnl(Manager *m) { | |
383 | int fd, r; | |
505f8da7 TG |
384 | |
385 | assert(m); | |
505f8da7 | 386 | |
5fae368b TG |
387 | fd = systemd_netlink_fd(); |
388 | if (fd < 0) | |
389 | r = sd_rtnl_open(&m->rtnl, 3, RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR, RTNLGRP_IPV6_IFADDR); | |
390 | else | |
391 | r = sd_rtnl_open_fd(&m->rtnl, fd, 0); | |
505f8da7 TG |
392 | if (r < 0) |
393 | return r; | |
394 | ||
5fae368b | 395 | r = sd_rtnl_inc_rcvbuf(m->rtnl, RCVBUF_SIZE); |
f579559b | 396 | if (r < 0) |
bf5332d2 | 397 | return r; |
f579559b | 398 | |
5fae368b | 399 | r = sd_rtnl_attach_event(m->rtnl, m->event, 0); |
505f8da7 TG |
400 | if (r < 0) |
401 | return r; | |
f579559b | 402 | |
5fae368b TG |
403 | r = sd_rtnl_add_match(m->rtnl, RTM_NEWLINK, &manager_rtnl_process_link, m); |
404 | if (r < 0) | |
405 | return r; | |
505f8da7 | 406 | |
5fae368b TG |
407 | r = sd_rtnl_add_match(m->rtnl, RTM_DELLINK, &manager_rtnl_process_link, m); |
408 | if (r < 0) | |
409 | return r; | |
45af44d4 | 410 | |
5fae368b TG |
411 | r = sd_rtnl_add_match(m->rtnl, RTM_NEWADDR, &link_rtnl_process_address, m); |
412 | if (r < 0) | |
413 | return r; | |
414 | ||
415 | r = sd_rtnl_add_match(m->rtnl, RTM_DELADDR, &link_rtnl_process_address, m); | |
416 | if (r < 0) | |
417 | return r; | |
418 | ||
419 | return 0; | |
45af44d4 | 420 | } |
505f8da7 | 421 | |
5fae368b TG |
422 | int manager_new(Manager **ret) { |
423 | _cleanup_manager_free_ Manager *m = NULL; | |
45af44d4 | 424 | int r; |
f579559b | 425 | |
5fae368b TG |
426 | m = new0(Manager, 1); |
427 | if (!m) | |
428 | return -ENOMEM; | |
45af44d4 | 429 | |
5fae368b TG |
430 | m->state_file = strdup("/run/systemd/netif/state"); |
431 | if (!m->state_file) | |
432 | return -ENOMEM; | |
433 | ||
434 | r = sd_event_default(&m->event); | |
45af44d4 TG |
435 | if (r < 0) |
436 | return r; | |
437 | ||
5fae368b TG |
438 | sd_event_set_watchdog(m->event, true); |
439 | ||
440 | sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL); | |
441 | sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL); | |
442 | ||
443 | r = manager_connect_rtnl(m); | |
45af44d4 TG |
444 | if (r < 0) |
445 | return r; | |
446 | ||
5fae368b TG |
447 | r = manager_connect_udev(m); |
448 | if (r < 0) | |
449 | return r; | |
45af44d4 | 450 | |
5fae368b TG |
451 | m->netdevs = hashmap_new(&string_hash_ops); |
452 | if (!m->netdevs) | |
453 | return -ENOMEM; | |
f579559b | 454 | |
5fae368b | 455 | LIST_HEAD_INIT(m->networks); |
f579559b | 456 | |
5fae368b TG |
457 | r = setup_default_address_pool(m); |
458 | if (r < 0) | |
459 | return r; | |
f579559b | 460 | |
5fae368b TG |
461 | *ret = m; |
462 | m = NULL; | |
f579559b | 463 | |
f579559b TG |
464 | return 0; |
465 | } | |
466 | ||
5fae368b TG |
467 | void manager_free(Manager *m) { |
468 | Network *network; | |
469 | NetDev *netdev; | |
470 | Link *link; | |
471 | AddressPool *pool; | |
f579559b | 472 | |
5fae368b TG |
473 | if (!m) |
474 | return; | |
505f8da7 | 475 | |
5fae368b | 476 | free(m->state_file); |
505f8da7 | 477 | |
5fae368b TG |
478 | udev_monitor_unref(m->udev_monitor); |
479 | udev_unref(m->udev); | |
480 | sd_bus_unref(m->bus); | |
481 | sd_bus_slot_unref(m->prepare_for_sleep_slot); | |
482 | sd_event_source_unref(m->udev_event_source); | |
483 | sd_event_source_unref(m->bus_retry_event_source); | |
484 | sd_event_unref(m->event); | |
f579559b | 485 | |
5fae368b TG |
486 | while ((link = hashmap_first(m->links))) |
487 | link_unref(link); | |
488 | hashmap_free(m->links); | |
f579559b | 489 | |
5fae368b TG |
490 | while ((network = m->networks)) |
491 | network_free(network); | |
492 | ||
dbffab87 TG |
493 | hashmap_free(m->networks_by_name); |
494 | ||
5fae368b TG |
495 | while ((netdev = hashmap_first(m->netdevs))) |
496 | netdev_unref(netdev); | |
497 | hashmap_free(m->netdevs); | |
498 | ||
499 | while ((pool = m->address_pools)) | |
500 | address_pool_free(pool); | |
501 | ||
502 | sd_rtnl_unref(m->rtnl); | |
503 | ||
504 | free(m); | |
505 | } | |
506 | ||
a97dcc12 TG |
507 | static bool manager_check_idle(void *userdata) { |
508 | Manager *m = userdata; | |
509 | Link *link; | |
510 | Iterator i; | |
511 | ||
512 | assert(m); | |
513 | ||
514 | HASHMAP_FOREACH(link, m->links, i) { | |
515 | /* we are not woken on udev activity, so let's just wait for the | |
516 | * pending udev event */ | |
517 | if (link->state == LINK_STATE_PENDING) | |
518 | return false; | |
519 | ||
520 | if (!link->network) | |
521 | continue; | |
522 | ||
523 | /* we are not woken on netork activity, so let's stay around */ | |
524 | if (link_lldp_enabled(link) || | |
525 | link_ipv4ll_enabled(link) || | |
526 | link_dhcp4_server_enabled(link) || | |
527 | link_dhcp4_enabled(link) || | |
528 | link_dhcp6_enabled(link)) | |
529 | return false; | |
530 | } | |
531 | ||
532 | return true; | |
533 | } | |
534 | ||
535 | int manager_run(Manager *m) { | |
536 | assert(m); | |
537 | ||
f806f64c TG |
538 | if (m->bus) |
539 | return bus_event_loop_with_idle( | |
540 | m->event, | |
541 | m->bus, | |
542 | "org.freedesktop.network1", | |
543 | DEFAULT_EXIT_USEC, | |
544 | manager_check_idle, | |
545 | m); | |
546 | else | |
547 | /* failed to connect to the bus, so we lose exit-on-idle logic, | |
548 | this should not happen except if dbus is not around at all */ | |
549 | return sd_event_loop(m->event); | |
a97dcc12 TG |
550 | } |
551 | ||
5fae368b TG |
552 | int manager_load_config(Manager *m) { |
553 | int r; | |
554 | ||
555 | /* update timestamp */ | |
556 | paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, true); | |
557 | ||
558 | r = netdev_load(m); | |
f579559b TG |
559 | if (r < 0) |
560 | return r; | |
561 | ||
5fae368b | 562 | r = network_load(m); |
9021bb9f TG |
563 | if (r < 0) |
564 | return r; | |
565 | ||
f579559b TG |
566 | return 0; |
567 | } | |
f882c247 | 568 | |
5fae368b TG |
569 | bool manager_should_reload(Manager *m) { |
570 | return paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, false); | |
571 | } | |
572 | ||
573 | int manager_rtnl_enumerate_links(Manager *m) { | |
574 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL; | |
575 | sd_rtnl_message *link; | |
f882c247 TG |
576 | int r; |
577 | ||
5da8149f | 578 | assert(m); |
5fae368b | 579 | assert(m->rtnl); |
5da8149f | 580 | |
5fae368b | 581 | r = sd_rtnl_message_new_link(m->rtnl, &req, RTM_GETLINK, 0); |
f882c247 TG |
582 | if (r < 0) |
583 | return r; | |
584 | ||
5fae368b | 585 | r = sd_rtnl_message_request_dump(req, true); |
dd3efc09 TG |
586 | if (r < 0) |
587 | return r; | |
588 | ||
5fae368b | 589 | r = sd_rtnl_call(m->rtnl, req, 0, &reply); |
f2236469 TG |
590 | if (r < 0) |
591 | return r; | |
592 | ||
5fae368b TG |
593 | for (link = reply; link; link = sd_rtnl_message_next(link)) { |
594 | int k; | |
2e9f08ea | 595 | |
6a24f148 TG |
596 | m->enumerating = true; |
597 | ||
5fae368b TG |
598 | k = manager_rtnl_process_link(m->rtnl, link, m); |
599 | if (k < 0) | |
600 | r = k; | |
6a24f148 TG |
601 | |
602 | m->enumerating = false; | |
5fae368b | 603 | } |
2e9f08ea | 604 | |
5fae368b | 605 | return r; |
f882c247 | 606 | } |
3bef724f | 607 | |
5fae368b TG |
608 | int manager_rtnl_enumerate_addresses(Manager *m) { |
609 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL; | |
610 | sd_rtnl_message *addr; | |
1346b1f0 TG |
611 | int r; |
612 | ||
5fae368b TG |
613 | assert(m); |
614 | assert(m->rtnl); | |
bcbca829 | 615 | |
5fae368b TG |
616 | r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, 0); |
617 | if (r < 0) | |
618 | return r; | |
bcbca829 | 619 | |
5fae368b | 620 | r = sd_rtnl_message_request_dump(req, true); |
1346b1f0 TG |
621 | if (r < 0) |
622 | return r; | |
623 | ||
5fae368b TG |
624 | r = sd_rtnl_call(m->rtnl, req, 0, &reply); |
625 | if (r < 0) | |
626 | return r; | |
627 | ||
628 | for (addr = reply; addr; addr = sd_rtnl_message_next(addr)) { | |
629 | int k; | |
630 | ||
6a24f148 TG |
631 | m->enumerating = true; |
632 | ||
5fae368b TG |
633 | k = link_rtnl_process_address(m->rtnl, addr, m); |
634 | if (k < 0) | |
635 | r = k; | |
6a24f148 TG |
636 | |
637 | m->enumerating = false; | |
5fae368b TG |
638 | } |
639 | ||
640 | return r; | |
1346b1f0 TG |
641 | } |
642 | ||
c0c743cb LP |
643 | static int set_put_in_addr(Set *s, const struct in_addr *address) { |
644 | char *p; | |
645 | int r; | |
646 | ||
647 | assert(s); | |
648 | ||
649 | r = in_addr_to_string(AF_INET, (const union in_addr_union*) address, &p); | |
650 | if (r < 0) | |
651 | return r; | |
652 | ||
653 | r = set_consume(s, p); | |
654 | if (r == -EEXIST) | |
655 | return 0; | |
656 | ||
657 | return r; | |
658 | } | |
659 | ||
660 | static int set_put_in_addrv(Set *s, const struct in_addr *addresses, int n) { | |
661 | int r, i, c = 0; | |
662 | ||
663 | assert(s); | |
664 | assert(n <= 0 || addresses); | |
665 | ||
666 | for (i = 0; i < n; i++) { | |
667 | r = set_put_in_addr(s, addresses+i); | |
668 | if (r < 0) | |
669 | return r; | |
670 | ||
671 | c += r; | |
672 | } | |
673 | ||
674 | return c; | |
675 | } | |
676 | ||
8612e936 LP |
677 | static void print_string_set(FILE *f, const char *field, Set *s) { |
678 | bool space = false; | |
679 | Iterator i; | |
680 | char *p; | |
681 | ||
682 | if (set_isempty(s)) | |
683 | return; | |
684 | ||
685 | fputs(field, f); | |
686 | ||
687 | SET_FOREACH(p, s, i) { | |
688 | if (space) | |
689 | fputc(' ', f); | |
690 | fputs(p, f); | |
691 | space = true; | |
692 | } | |
693 | fputc('\n', f); | |
694 | } | |
695 | ||
bbf7c048 | 696 | int manager_save(Manager *m) { |
8612e936 | 697 | _cleanup_set_free_free_ Set *dns = NULL, *ntp = NULL, *domains = NULL; |
bbf7c048 TG |
698 | Link *link; |
699 | Iterator i; | |
700 | _cleanup_free_ char *temp_path = NULL; | |
701 | _cleanup_fclose_ FILE *f = NULL; | |
d3df0e39 | 702 | LinkOperationalState operstate = LINK_OPERSTATE_OFF; |
e375dcde | 703 | const char *operstate_str; |
bbf7c048 TG |
704 | int r; |
705 | ||
706 | assert(m); | |
707 | assert(m->state_file); | |
708 | ||
c0c743cb | 709 | /* We add all NTP and DNS server to a set, to filter out duplicates */ |
d5099efc | 710 | dns = set_new(&string_hash_ops); |
c0c743cb LP |
711 | if (!dns) |
712 | return -ENOMEM; | |
713 | ||
d5099efc | 714 | ntp = set_new(&string_hash_ops); |
c0c743cb LP |
715 | if (!ntp) |
716 | return -ENOMEM; | |
717 | ||
d5099efc | 718 | domains = set_new(&string_hash_ops); |
8612e936 LP |
719 | if (!domains) |
720 | return -ENOMEM; | |
721 | ||
bbf7c048 TG |
722 | HASHMAP_FOREACH(link, m->links, i) { |
723 | if (link->flags & IFF_LOOPBACK) | |
724 | continue; | |
725 | ||
e375dcde TG |
726 | if (link->operstate > operstate) |
727 | operstate = link->operstate; | |
c0c743cb LP |
728 | |
729 | if (!link->network) | |
730 | continue; | |
731 | ||
732 | /* First add the static configured entries */ | |
733 | r = set_put_strdupv(dns, link->network->dns); | |
734 | if (r < 0) | |
735 | return r; | |
736 | ||
737 | r = set_put_strdupv(ntp, link->network->ntp); | |
738 | if (r < 0) | |
739 | return r; | |
740 | ||
8612e936 LP |
741 | r = set_put_strdupv(domains, link->network->domains); |
742 | if (r < 0) | |
743 | return r; | |
744 | ||
c0c743cb LP |
745 | if (!link->dhcp_lease) |
746 | continue; | |
747 | ||
748 | /* Secondly, add the entries acquired via DHCP */ | |
749 | if (link->network->dhcp_dns) { | |
750 | const struct in_addr *addresses; | |
751 | ||
752 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
753 | if (r > 0) { | |
754 | r = set_put_in_addrv(dns, addresses, r); | |
755 | if (r < 0) | |
756 | return r; | |
8612e936 | 757 | } else if (r < 0 && r != -ENOENT) |
c0c743cb LP |
758 | return r; |
759 | } | |
760 | ||
761 | if (link->network->dhcp_ntp) { | |
762 | const struct in_addr *addresses; | |
763 | ||
764 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
765 | if (r > 0) { | |
766 | r = set_put_in_addrv(ntp, addresses, r); | |
767 | if (r < 0) | |
768 | return r; | |
8612e936 LP |
769 | } else if (r < 0 && r != -ENOENT) |
770 | return r; | |
771 | } | |
772 | ||
773 | if (link->network->dhcp_domains) { | |
774 | const char *domainname; | |
775 | ||
776 | r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); | |
777 | if (r >= 0) { | |
778 | r = set_put_strdup(domains, domainname); | |
779 | if (r < 0) | |
780 | return r; | |
c0c743cb LP |
781 | } else if (r != -ENOENT) |
782 | return r; | |
783 | } | |
bbf7c048 TG |
784 | } |
785 | ||
e375dcde TG |
786 | operstate_str = link_operstate_to_string(operstate); |
787 | assert(operstate_str); | |
bbf7c048 TG |
788 | |
789 | r = fopen_temporary(m->state_file, &f, &temp_path); | |
790 | if (r < 0) | |
c2d6bd61 | 791 | return r; |
bbf7c048 TG |
792 | |
793 | fchmod(fileno(f), 0644); | |
794 | ||
795 | fprintf(f, | |
796 | "# This is private data. Do not parse.\n" | |
e375dcde | 797 | "OPER_STATE=%s\n", operstate_str); |
bbf7c048 | 798 | |
8612e936 LP |
799 | print_string_set(f, "DNS=", dns); |
800 | print_string_set(f, "NTP=", ntp); | |
801 | print_string_set(f, "DOMAINS=", domains); | |
c0c743cb | 802 | |
c2d6bd61 LP |
803 | r = fflush_and_check(f); |
804 | if (r < 0) | |
805 | goto fail; | |
bbf7c048 | 806 | |
c2d6bd61 | 807 | if (rename(temp_path, m->state_file) < 0) { |
bbf7c048 | 808 | r = -errno; |
c2d6bd61 | 809 | goto fail; |
bbf7c048 TG |
810 | } |
811 | ||
e331e246 TG |
812 | if (m->operational_state != operstate) { |
813 | m->operational_state = operstate; | |
814 | r = manager_send_changed(m, "OperationalState", NULL); | |
815 | if (r < 0) | |
816 | log_error_errno(r, "Could not emit changed OperationalState: %m"); | |
817 | } | |
818 | ||
c2d6bd61 | 819 | return 0; |
bbf7c048 | 820 | |
c2d6bd61 | 821 | fail: |
da927ba9 | 822 | log_error_errno(r, "Failed to save network state to %s: %m", m->state_file); |
c2d6bd61 LP |
823 | unlink(m->state_file); |
824 | unlink(temp_path); | |
bbf7c048 TG |
825 | return r; |
826 | } | |
11bf3cce | 827 | |
0dd25fb9 | 828 | int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found) { |
11bf3cce LP |
829 | AddressPool *p; |
830 | int r; | |
831 | ||
832 | assert(m); | |
833 | assert(prefixlen > 0); | |
834 | assert(found); | |
835 | ||
836 | LIST_FOREACH(address_pools, p, m->address_pools) { | |
837 | if (p->family != family) | |
838 | continue; | |
839 | ||
840 | r = address_pool_acquire(p, prefixlen, found); | |
841 | if (r != 0) | |
842 | return r; | |
843 | } | |
844 | ||
845 | return 0; | |
846 | } | |
cb9fc36a LP |
847 | |
848 | const char *address_family_boolean_to_string(AddressFamilyBoolean b) { | |
849 | if (b == ADDRESS_FAMILY_YES || | |
850 | b == ADDRESS_FAMILY_NO) | |
851 | return yes_no(b == ADDRESS_FAMILY_YES); | |
852 | ||
853 | if (b == ADDRESS_FAMILY_IPV4) | |
854 | return "ipv4"; | |
855 | if (b == ADDRESS_FAMILY_IPV6) | |
856 | return "ipv6"; | |
857 | ||
858 | return NULL; | |
859 | } | |
860 | ||
861 | AddressFamilyBoolean address_family_boolean_from_string(const char *s) { | |
862 | int r; | |
863 | ||
864 | /* Make this a true superset of a boolean */ | |
865 | ||
866 | r = parse_boolean(s); | |
867 | if (r > 0) | |
868 | return ADDRESS_FAMILY_YES; | |
869 | if (r == 0) | |
870 | return ADDRESS_FAMILY_NO; | |
871 | ||
872 | if (streq(s, "ipv4")) | |
873 | return ADDRESS_FAMILY_IPV4; | |
874 | if (streq(s, "ipv6")) | |
875 | return ADDRESS_FAMILY_IPV6; | |
876 | ||
877 | return _ADDRESS_FAMILY_BOOLEAN_INVALID; | |
878 | } | |
769d324c LP |
879 | |
880 | DEFINE_CONFIG_PARSE_ENUM(config_parse_address_family_boolean, address_family_boolean, AddressFamilyBoolean, "Failed to parse option"); |