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60f067b4 JS |
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 | ||
22 | #include <sys/socket.h> | |
23 | #include <linux/if.h> | |
24 | ||
25 | #include "conf-parser.h" | |
26 | #include "path-util.h" | |
27 | #include "networkd.h" | |
5eef597e MP |
28 | #include "networkd-netdev.h" |
29 | #include "networkd-link.h" | |
60f067b4 JS |
30 | #include "libudev-private.h" |
31 | #include "udev-util.h" | |
32 | #include "rtnl-util.h" | |
e735f4d4 MP |
33 | #include "bus-util.h" |
34 | #include "def.h" | |
60f067b4 JS |
35 | #include "virt.h" |
36 | ||
37 | #include "sd-rtnl.h" | |
e735f4d4 | 38 | #include "sd-daemon.h" |
60f067b4 | 39 | |
f47781d8 MP |
40 | /* use 8 MB for receive socket kernel queue. */ |
41 | #define RCVBUF_SIZE (8*1024*1024) | |
42 | ||
60f067b4 JS |
43 | const char* const network_dirs[] = { |
44 | "/etc/systemd/network", | |
45 | "/run/systemd/network", | |
46 | "/usr/lib/systemd/network", | |
47 | #ifdef HAVE_SPLIT_USR | |
48 | "/lib/systemd/network", | |
49 | #endif | |
50 | NULL}; | |
51 | ||
e842803a MB |
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 | ||
e735f4d4 MP |
79 | static int on_bus_retry(sd_event_source *s, usec_t usec, void *userdata) { |
80 | Manager *m = userdata; | |
60f067b4 | 81 | |
e735f4d4 MP |
82 | assert(s); |
83 | assert(m); | |
60f067b4 | 84 | |
e735f4d4 | 85 | m->bus_retry_event_source = sd_event_source_unref(m->bus_retry_event_source); |
60f067b4 | 86 | |
e735f4d4 | 87 | manager_connect_bus(m); |
60f067b4 | 88 | |
e735f4d4 MP |
89 | return 0; |
90 | } | |
60f067b4 | 91 | |
e735f4d4 MP |
92 | static int manager_reset_all(Manager *m) { |
93 | Link *link; | |
94 | Iterator i; | |
95 | int r; | |
5eef597e | 96 | |
e735f4d4 | 97 | assert(m); |
60f067b4 | 98 | |
e735f4d4 MP |
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 | } | |
f47781d8 | 104 | |
e735f4d4 MP |
105 | return 0; |
106 | } | |
60f067b4 | 107 | |
e3bff60a | 108 | static int match_prepare_for_sleep(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) { |
e735f4d4 MP |
109 | Manager *m = userdata; |
110 | int b, r; | |
60f067b4 | 111 | |
e3bff60a | 112 | assert(message); |
60f067b4 | 113 | |
e735f4d4 MP |
114 | r = sd_bus_message_read(message, "b", &b); |
115 | if (r < 0) { | |
116 | log_debug_errno(r, "Failed to parse PrepareForSleep signal: %m"); | |
117 | return 0; | |
118 | } | |
60f067b4 | 119 | |
e735f4d4 MP |
120 | if (b) |
121 | return 0; | |
e842803a | 122 | |
e735f4d4 MP |
123 | log_debug("Coming back from suspend, resetting all connections..."); |
124 | ||
125 | manager_reset_all(m); | |
60f067b4 JS |
126 | |
127 | return 0; | |
128 | } | |
129 | ||
e735f4d4 MP |
130 | int manager_connect_bus(Manager *m) { |
131 | int r; | |
60f067b4 | 132 | |
e735f4d4 | 133 | assert(m); |
60f067b4 | 134 | |
e735f4d4 MP |
135 | r = sd_bus_default_system(&m->bus); |
136 | if (r == -ENOENT) { | |
137 | /* We failed to connect? Yuck, we must be in early | |
138 | * boot. Let's try in 5s again. As soon as we have | |
139 | * kdbus we can stop doing this... */ | |
60f067b4 | 140 | |
e735f4d4 | 141 | log_debug_errno(r, "Failed to connect to bus, trying again in 5s: %m"); |
60f067b4 | 142 | |
e735f4d4 MP |
143 | 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); |
144 | if (r < 0) | |
145 | return log_error_errno(r, "Failed to install bus reconnect time event: %m"); | |
60f067b4 | 146 | |
e735f4d4 MP |
147 | return 0; |
148 | } if (r < 0) | |
149 | return r; | |
60f067b4 | 150 | |
e735f4d4 MP |
151 | r = sd_bus_add_match(m->bus, &m->prepare_for_sleep_slot, |
152 | "type='signal'," | |
153 | "sender='org.freedesktop.login1'," | |
154 | "interface='org.freedesktop.login1.Manager'," | |
155 | "member='PrepareForSleep'," | |
156 | "path='/org/freedesktop/login1'", | |
157 | match_prepare_for_sleep, | |
158 | m); | |
159 | if (r < 0) | |
160 | return log_error_errno(r, "Failed to add match for PrepareForSleep: %m"); | |
60f067b4 | 161 | |
e735f4d4 MP |
162 | r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/network1", "org.freedesktop.network1.Manager", manager_vtable, m); |
163 | if (r < 0) | |
164 | return log_error_errno(r, "Failed to add manager object vtable: %m"); | |
e842803a | 165 | |
e735f4d4 MP |
166 | r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/link", "org.freedesktop.network1.Link", link_vtable, link_object_find, m); |
167 | if (r < 0) | |
168 | return log_error_errno(r, "Failed to add link object vtable: %m"); | |
60f067b4 | 169 | |
e735f4d4 MP |
170 | r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/link", link_node_enumerator, m); |
171 | if (r < 0) | |
172 | return log_error_errno(r, "Failed to add link enumerator: %m"); | |
60f067b4 | 173 | |
e735f4d4 MP |
174 | r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/network1/network", "org.freedesktop.network1.Network", network_vtable, network_object_find, m); |
175 | if (r < 0) | |
176 | return log_error_errno(r, "Failed to add network object vtable: %m"); | |
60f067b4 | 177 | |
e735f4d4 MP |
178 | r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/network1/network", network_node_enumerator, m); |
179 | if (r < 0) | |
180 | return log_error_errno(r, "Failed to add network enumerator: %m"); | |
60f067b4 | 181 | |
e735f4d4 | 182 | r = sd_bus_request_name(m->bus, "org.freedesktop.network1", 0); |
60f067b4 | 183 | if (r < 0) |
e735f4d4 | 184 | return log_error_errno(r, "Failed to register name: %m"); |
60f067b4 | 185 | |
e735f4d4 | 186 | r = sd_bus_attach_event(m->bus, m->event, 0); |
60f067b4 | 187 | if (r < 0) |
e735f4d4 | 188 | return log_error_errno(r, "Failed to attach bus to event loop: %m"); |
60f067b4 JS |
189 | |
190 | return 0; | |
191 | } | |
192 | ||
60f067b4 JS |
193 | static int manager_udev_process_link(Manager *m, struct udev_device *device) { |
194 | Link *link = NULL; | |
195 | int r, ifindex; | |
196 | ||
197 | assert(m); | |
198 | assert(device); | |
199 | ||
200 | if (!streq_ptr(udev_device_get_action(device), "add")) | |
201 | return 0; | |
202 | ||
203 | ifindex = udev_device_get_ifindex(device); | |
204 | if (ifindex <= 0) { | |
205 | log_debug("ignoring udev ADD event for device with invalid ifindex"); | |
206 | return 0; | |
207 | } | |
208 | ||
209 | r = link_get(m, ifindex, &link); | |
210 | if (r == -ENODEV) | |
211 | return 0; | |
212 | else if (r < 0) | |
213 | return r; | |
214 | ||
215 | r = link_initialized(link, device); | |
216 | if (r < 0) | |
217 | return r; | |
218 | ||
219 | return 0; | |
220 | } | |
221 | ||
e735f4d4 MP |
222 | static int manager_dispatch_link_udev(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
223 | Manager *m = userdata; | |
224 | struct udev_monitor *monitor = m->udev_monitor; | |
225 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
226 | ||
227 | device = udev_monitor_receive_device(monitor); | |
228 | if (!device) | |
229 | return -ENOMEM; | |
230 | ||
231 | manager_udev_process_link(m, device); | |
232 | return 0; | |
233 | } | |
234 | ||
235 | static int manager_connect_udev(Manager *m) { | |
236 | int r; | |
237 | ||
238 | /* udev does not initialize devices inside containers, | |
239 | * so we rely on them being already initialized before | |
240 | * entering the container */ | |
241 | if (detect_container(NULL) > 0) | |
242 | return 0; | |
243 | ||
244 | m->udev = udev_new(); | |
245 | if (!m->udev) | |
246 | return -ENOMEM; | |
247 | ||
248 | m->udev_monitor = udev_monitor_new_from_netlink(m->udev, "udev"); | |
249 | if (!m->udev_monitor) | |
250 | return -ENOMEM; | |
251 | ||
252 | r = udev_monitor_filter_add_match_subsystem_devtype(m->udev_monitor, "net", NULL); | |
253 | if (r < 0) | |
254 | return log_error_errno(r, "Could not add udev monitor filter: %m"); | |
255 | ||
256 | r = udev_monitor_enable_receiving(m->udev_monitor); | |
257 | if (r < 0) { | |
258 | log_error("Could not enable udev monitor"); | |
259 | return r; | |
260 | } | |
261 | ||
262 | r = sd_event_add_io(m->event, | |
263 | &m->udev_event_source, | |
264 | udev_monitor_get_fd(m->udev_monitor), | |
265 | EPOLLIN, manager_dispatch_link_udev, | |
266 | m); | |
267 | if (r < 0) | |
268 | return r; | |
269 | ||
270 | r = sd_event_source_set_description(m->udev_event_source, "networkd-udev"); | |
271 | if (r < 0) | |
272 | return r; | |
273 | ||
274 | return 0; | |
275 | } | |
276 | ||
60f067b4 JS |
277 | static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata) { |
278 | Manager *m = userdata; | |
279 | Link *link = NULL; | |
280 | NetDev *netdev = NULL; | |
281 | uint16_t type; | |
5eef597e | 282 | const char *name; |
60f067b4 JS |
283 | int r, ifindex; |
284 | ||
285 | assert(rtnl); | |
286 | assert(message); | |
287 | assert(m); | |
288 | ||
f47781d8 MP |
289 | if (sd_rtnl_message_is_error(message)) { |
290 | r = sd_rtnl_message_get_errno(message); | |
291 | if (r < 0) | |
292 | log_warning_errno(r, "rtnl: could not receive link: %m"); | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
60f067b4 JS |
297 | r = sd_rtnl_message_get_type(message, &type); |
298 | if (r < 0) { | |
f47781d8 | 299 | log_warning_errno(r, "rtnl: could not get message type: %m"); |
60f067b4 | 300 | return 0; |
e3bff60a MP |
301 | } else if (type != RTM_NEWLINK && type != RTM_DELLINK) { |
302 | log_warning("rtnl: received unexpected message type when processing link"); | |
303 | return 0; | |
60f067b4 JS |
304 | } |
305 | ||
306 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
f47781d8 | 307 | if (r < 0) { |
e3bff60a | 308 | log_warning_errno(r, "rtnl: could not get ifindex from link: %m"); |
f47781d8 MP |
309 | return 0; |
310 | } else if (ifindex <= 0) { | |
311 | log_warning("rtnl: received link message with invalid ifindex: %d", ifindex); | |
60f067b4 JS |
312 | return 0; |
313 | } else | |
314 | link_get(m, ifindex, &link); | |
315 | ||
316 | r = sd_rtnl_message_read_string(message, IFLA_IFNAME, &name); | |
f47781d8 MP |
317 | if (r < 0) { |
318 | log_warning_errno(r, "rtnl: received link message without ifname: %m"); | |
60f067b4 JS |
319 | return 0; |
320 | } else | |
321 | netdev_get(m, name, &netdev); | |
322 | ||
323 | switch (type) { | |
324 | case RTM_NEWLINK: | |
325 | if (!link) { | |
326 | /* link is new, so add it */ | |
327 | r = link_add(m, message, &link); | |
328 | if (r < 0) { | |
e735f4d4 | 329 | log_warning_errno(r, "could not add new link: %m"); |
60f067b4 JS |
330 | return 0; |
331 | } | |
332 | } | |
333 | ||
334 | if (netdev) { | |
335 | /* netdev exists, so make sure the ifindex matches */ | |
336 | r = netdev_set_ifindex(netdev, message); | |
337 | if (r < 0) { | |
e735f4d4 | 338 | log_warning_errno(r, "could not set ifindex on netdev: %m"); |
60f067b4 JS |
339 | return 0; |
340 | } | |
341 | } | |
342 | ||
343 | r = link_update(link, message); | |
344 | if (r < 0) | |
345 | return 0; | |
346 | ||
347 | break; | |
348 | ||
349 | case RTM_DELLINK: | |
350 | link_drop(link); | |
351 | netdev_drop(netdev); | |
352 | ||
353 | break; | |
354 | ||
355 | default: | |
356 | assert_not_reached("Received invalid RTNL message type."); | |
357 | } | |
358 | ||
359 | return 1; | |
360 | } | |
361 | ||
e735f4d4 MP |
362 | static int systemd_netlink_fd(void) { |
363 | int n, fd, rtnl_fd = -EINVAL; | |
364 | ||
365 | n = sd_listen_fds(true); | |
366 | if (n <= 0) | |
367 | return -EINVAL; | |
368 | ||
369 | for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++) { | |
370 | if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { | |
371 | if (rtnl_fd >= 0) | |
372 | return -EINVAL; | |
373 | ||
374 | rtnl_fd = fd; | |
375 | } | |
376 | } | |
377 | ||
378 | return rtnl_fd; | |
379 | } | |
380 | ||
381 | static int manager_connect_rtnl(Manager *m) { | |
382 | int fd, r; | |
60f067b4 JS |
383 | |
384 | assert(m); | |
60f067b4 | 385 | |
e735f4d4 MP |
386 | fd = systemd_netlink_fd(); |
387 | if (fd < 0) | |
388 | r = sd_rtnl_open(&m->rtnl, 3, RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR, RTNLGRP_IPV6_IFADDR); | |
389 | else | |
390 | r = sd_rtnl_open_fd(&m->rtnl, fd, 0); | |
60f067b4 JS |
391 | if (r < 0) |
392 | return r; | |
393 | ||
e735f4d4 | 394 | r = sd_rtnl_inc_rcvbuf(m->rtnl, RCVBUF_SIZE); |
60f067b4 JS |
395 | if (r < 0) |
396 | return r; | |
397 | ||
e735f4d4 | 398 | r = sd_rtnl_attach_event(m->rtnl, m->event, 0); |
60f067b4 JS |
399 | if (r < 0) |
400 | return r; | |
401 | ||
e735f4d4 MP |
402 | r = sd_rtnl_add_match(m->rtnl, RTM_NEWLINK, &manager_rtnl_process_link, m); |
403 | if (r < 0) | |
404 | return r; | |
60f067b4 | 405 | |
e735f4d4 MP |
406 | r = sd_rtnl_add_match(m->rtnl, RTM_DELLINK, &manager_rtnl_process_link, m); |
407 | if (r < 0) | |
408 | return r; | |
60f067b4 | 409 | |
e735f4d4 MP |
410 | r = sd_rtnl_add_match(m->rtnl, RTM_NEWADDR, &link_rtnl_process_address, m); |
411 | if (r < 0) | |
412 | return r; | |
413 | ||
414 | r = sd_rtnl_add_match(m->rtnl, RTM_DELADDR, &link_rtnl_process_address, m); | |
415 | if (r < 0) | |
416 | return r; | |
417 | ||
418 | return 0; | |
f47781d8 | 419 | } |
60f067b4 | 420 | |
e735f4d4 MP |
421 | int manager_new(Manager **ret) { |
422 | _cleanup_manager_free_ Manager *m = NULL; | |
f47781d8 MP |
423 | int r; |
424 | ||
e735f4d4 MP |
425 | m = new0(Manager, 1); |
426 | if (!m) | |
427 | return -ENOMEM; | |
f47781d8 | 428 | |
e735f4d4 MP |
429 | m->state_file = strdup("/run/systemd/netif/state"); |
430 | if (!m->state_file) | |
431 | return -ENOMEM; | |
432 | ||
433 | r = sd_event_default(&m->event); | |
f47781d8 MP |
434 | if (r < 0) |
435 | return r; | |
436 | ||
e735f4d4 MP |
437 | sd_event_set_watchdog(m->event, true); |
438 | ||
439 | sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL); | |
440 | sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL); | |
441 | ||
442 | r = manager_connect_rtnl(m); | |
f47781d8 MP |
443 | if (r < 0) |
444 | return r; | |
445 | ||
e735f4d4 | 446 | r = manager_connect_udev(m); |
f47781d8 MP |
447 | if (r < 0) |
448 | return r; | |
449 | ||
e735f4d4 MP |
450 | m->netdevs = hashmap_new(&string_hash_ops); |
451 | if (!m->netdevs) | |
452 | return -ENOMEM; | |
f47781d8 | 453 | |
e735f4d4 | 454 | LIST_HEAD_INIT(m->networks); |
60f067b4 | 455 | |
e735f4d4 MP |
456 | r = setup_default_address_pool(m); |
457 | if (r < 0) | |
458 | return r; | |
459 | ||
460 | *ret = m; | |
461 | m = NULL; | |
462 | ||
463 | return 0; | |
60f067b4 JS |
464 | } |
465 | ||
e735f4d4 MP |
466 | void manager_free(Manager *m) { |
467 | Network *network; | |
468 | NetDev *netdev; | |
469 | Link *link; | |
470 | AddressPool *pool; | |
60f067b4 | 471 | |
e735f4d4 MP |
472 | if (!m) |
473 | return; | |
60f067b4 | 474 | |
e735f4d4 MP |
475 | free(m->state_file); |
476 | ||
477 | udev_monitor_unref(m->udev_monitor); | |
478 | udev_unref(m->udev); | |
479 | sd_bus_unref(m->bus); | |
480 | sd_bus_slot_unref(m->prepare_for_sleep_slot); | |
481 | sd_event_source_unref(m->udev_event_source); | |
482 | sd_event_source_unref(m->bus_retry_event_source); | |
483 | sd_event_unref(m->event); | |
484 | ||
485 | while ((link = hashmap_first(m->links))) | |
486 | link_unref(link); | |
487 | hashmap_free(m->links); | |
488 | ||
489 | while ((network = m->networks)) | |
490 | network_free(network); | |
491 | ||
492 | hashmap_free(m->networks_by_name); | |
493 | ||
494 | while ((netdev = hashmap_first(m->netdevs))) | |
495 | netdev_unref(netdev); | |
496 | hashmap_free(m->netdevs); | |
497 | ||
498 | while ((pool = m->address_pools)) | |
499 | address_pool_free(pool); | |
500 | ||
501 | sd_rtnl_unref(m->rtnl); | |
502 | ||
503 | free(m); | |
60f067b4 JS |
504 | } |
505 | ||
e735f4d4 MP |
506 | static bool manager_check_idle(void *userdata) { |
507 | Manager *m = userdata; | |
508 | Link *link; | |
509 | Iterator i; | |
60f067b4 | 510 | |
e735f4d4 | 511 | assert(m); |
60f067b4 | 512 | |
e735f4d4 MP |
513 | HASHMAP_FOREACH(link, m->links, i) { |
514 | /* we are not woken on udev activity, so let's just wait for the | |
515 | * pending udev event */ | |
516 | if (link->state == LINK_STATE_PENDING) | |
517 | return false; | |
60f067b4 | 518 | |
e735f4d4 MP |
519 | if (!link->network) |
520 | continue; | |
60f067b4 | 521 | |
e735f4d4 MP |
522 | /* we are not woken on netork activity, so let's stay around */ |
523 | if (link_lldp_enabled(link) || | |
524 | link_ipv4ll_enabled(link) || | |
525 | link_dhcp4_server_enabled(link) || | |
526 | link_dhcp4_enabled(link) || | |
527 | link_dhcp6_enabled(link)) | |
528 | return false; | |
60f067b4 JS |
529 | } |
530 | ||
e735f4d4 MP |
531 | return true; |
532 | } | |
533 | ||
534 | int manager_run(Manager *m) { | |
535 | assert(m); | |
536 | ||
537 | if (m->bus) | |
538 | return bus_event_loop_with_idle( | |
539 | m->event, | |
540 | m->bus, | |
541 | "org.freedesktop.network1", | |
542 | DEFAULT_EXIT_USEC, | |
543 | manager_check_idle, | |
544 | m); | |
545 | else | |
546 | /* failed to connect to the bus, so we lose exit-on-idle logic, | |
547 | this should not happen except if dbus is not around at all */ | |
548 | return sd_event_loop(m->event); | |
549 | } | |
550 | ||
551 | int manager_load_config(Manager *m) { | |
552 | int r; | |
553 | ||
554 | /* update timestamp */ | |
555 | paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, true); | |
556 | ||
557 | r = netdev_load(m); | |
60f067b4 JS |
558 | if (r < 0) |
559 | return r; | |
560 | ||
e735f4d4 | 561 | r = network_load(m); |
5eef597e MP |
562 | if (r < 0) |
563 | return r; | |
564 | ||
60f067b4 JS |
565 | return 0; |
566 | } | |
567 | ||
e735f4d4 MP |
568 | bool manager_should_reload(Manager *m) { |
569 | return paths_check_timestamp(network_dirs, &m->network_dirs_ts_usec, false); | |
570 | } | |
571 | ||
572 | int manager_rtnl_enumerate_links(Manager *m) { | |
573 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL; | |
574 | sd_rtnl_message *link; | |
60f067b4 JS |
575 | int r; |
576 | ||
e842803a | 577 | assert(m); |
e735f4d4 | 578 | assert(m->rtnl); |
e842803a | 579 | |
e735f4d4 | 580 | r = sd_rtnl_message_new_link(m->rtnl, &req, RTM_GETLINK, 0); |
60f067b4 JS |
581 | if (r < 0) |
582 | return r; | |
583 | ||
e735f4d4 | 584 | r = sd_rtnl_message_request_dump(req, true); |
60f067b4 JS |
585 | if (r < 0) |
586 | return r; | |
587 | ||
e735f4d4 | 588 | r = sd_rtnl_call(m->rtnl, req, 0, &reply); |
60f067b4 JS |
589 | if (r < 0) |
590 | return r; | |
591 | ||
e735f4d4 MP |
592 | for (link = reply; link; link = sd_rtnl_message_next(link)) { |
593 | int k; | |
60f067b4 | 594 | |
e735f4d4 | 595 | m->enumerating = true; |
60f067b4 | 596 | |
e735f4d4 MP |
597 | k = manager_rtnl_process_link(m->rtnl, link, m); |
598 | if (k < 0) | |
599 | r = k; | |
600 | ||
601 | m->enumerating = false; | |
602 | } | |
603 | ||
604 | return r; | |
60f067b4 JS |
605 | } |
606 | ||
e735f4d4 MP |
607 | int manager_rtnl_enumerate_addresses(Manager *m) { |
608 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL; | |
609 | sd_rtnl_message *addr; | |
60f067b4 JS |
610 | int r; |
611 | ||
e735f4d4 MP |
612 | assert(m); |
613 | assert(m->rtnl); | |
60f067b4 | 614 | |
e735f4d4 MP |
615 | r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, 0); |
616 | if (r < 0) | |
617 | return r; | |
60f067b4 | 618 | |
e735f4d4 | 619 | r = sd_rtnl_message_request_dump(req, true); |
60f067b4 JS |
620 | if (r < 0) |
621 | return r; | |
622 | ||
e735f4d4 MP |
623 | r = sd_rtnl_call(m->rtnl, req, 0, &reply); |
624 | if (r < 0) | |
625 | return r; | |
626 | ||
627 | for (addr = reply; addr; addr = sd_rtnl_message_next(addr)) { | |
628 | int k; | |
629 | ||
630 | m->enumerating = true; | |
631 | ||
632 | k = link_rtnl_process_address(m->rtnl, addr, m); | |
633 | if (k < 0) | |
634 | r = k; | |
635 | ||
636 | m->enumerating = false; | |
637 | } | |
638 | ||
639 | return r; | |
60f067b4 JS |
640 | } |
641 | ||
5eef597e MP |
642 | static int set_put_in_addr(Set *s, const struct in_addr *address) { |
643 | char *p; | |
644 | int r; | |
645 | ||
646 | assert(s); | |
647 | ||
648 | r = in_addr_to_string(AF_INET, (const union in_addr_union*) address, &p); | |
649 | if (r < 0) | |
650 | return r; | |
651 | ||
652 | r = set_consume(s, p); | |
653 | if (r == -EEXIST) | |
654 | return 0; | |
655 | ||
656 | return r; | |
657 | } | |
658 | ||
659 | static int set_put_in_addrv(Set *s, const struct in_addr *addresses, int n) { | |
660 | int r, i, c = 0; | |
661 | ||
662 | assert(s); | |
663 | assert(n <= 0 || addresses); | |
664 | ||
665 | for (i = 0; i < n; i++) { | |
666 | r = set_put_in_addr(s, addresses+i); | |
667 | if (r < 0) | |
668 | return r; | |
669 | ||
670 | c += r; | |
671 | } | |
672 | ||
673 | return c; | |
674 | } | |
675 | ||
676 | static void print_string_set(FILE *f, const char *field, Set *s) { | |
677 | bool space = false; | |
678 | Iterator i; | |
679 | char *p; | |
680 | ||
681 | if (set_isempty(s)) | |
682 | return; | |
683 | ||
684 | fputs(field, f); | |
685 | ||
686 | SET_FOREACH(p, s, i) { | |
687 | if (space) | |
688 | fputc(' ', f); | |
689 | fputs(p, f); | |
690 | space = true; | |
691 | } | |
692 | fputc('\n', f); | |
693 | } | |
694 | ||
60f067b4 | 695 | int manager_save(Manager *m) { |
5eef597e | 696 | _cleanup_set_free_free_ Set *dns = NULL, *ntp = NULL, *domains = NULL; |
60f067b4 JS |
697 | Link *link; |
698 | Iterator i; | |
699 | _cleanup_free_ char *temp_path = NULL; | |
700 | _cleanup_fclose_ FILE *f = NULL; | |
5eef597e | 701 | LinkOperationalState operstate = LINK_OPERSTATE_OFF; |
60f067b4 JS |
702 | const char *operstate_str; |
703 | int r; | |
704 | ||
705 | assert(m); | |
706 | assert(m->state_file); | |
707 | ||
5eef597e MP |
708 | /* We add all NTP and DNS server to a set, to filter out duplicates */ |
709 | dns = set_new(&string_hash_ops); | |
710 | if (!dns) | |
711 | return -ENOMEM; | |
712 | ||
713 | ntp = set_new(&string_hash_ops); | |
714 | if (!ntp) | |
715 | return -ENOMEM; | |
716 | ||
717 | domains = set_new(&string_hash_ops); | |
718 | if (!domains) | |
719 | return -ENOMEM; | |
720 | ||
60f067b4 JS |
721 | HASHMAP_FOREACH(link, m->links, i) { |
722 | if (link->flags & IFF_LOOPBACK) | |
723 | continue; | |
724 | ||
725 | if (link->operstate > operstate) | |
726 | operstate = link->operstate; | |
5eef597e MP |
727 | |
728 | if (!link->network) | |
729 | continue; | |
730 | ||
731 | /* First add the static configured entries */ | |
732 | r = set_put_strdupv(dns, link->network->dns); | |
733 | if (r < 0) | |
734 | return r; | |
735 | ||
736 | r = set_put_strdupv(ntp, link->network->ntp); | |
737 | if (r < 0) | |
738 | return r; | |
739 | ||
740 | r = set_put_strdupv(domains, link->network->domains); | |
741 | if (r < 0) | |
742 | return r; | |
743 | ||
744 | if (!link->dhcp_lease) | |
745 | continue; | |
746 | ||
747 | /* Secondly, add the entries acquired via DHCP */ | |
748 | if (link->network->dhcp_dns) { | |
749 | const struct in_addr *addresses; | |
750 | ||
751 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
752 | if (r > 0) { | |
753 | r = set_put_in_addrv(dns, addresses, r); | |
754 | if (r < 0) | |
755 | return r; | |
756 | } else if (r < 0 && r != -ENOENT) | |
757 | return r; | |
758 | } | |
759 | ||
760 | if (link->network->dhcp_ntp) { | |
761 | const struct in_addr *addresses; | |
762 | ||
763 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
764 | if (r > 0) { | |
765 | r = set_put_in_addrv(ntp, addresses, r); | |
766 | if (r < 0) | |
767 | return r; | |
768 | } else if (r < 0 && r != -ENOENT) | |
769 | return r; | |
770 | } | |
771 | ||
772 | if (link->network->dhcp_domains) { | |
773 | const char *domainname; | |
774 | ||
775 | r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); | |
776 | if (r >= 0) { | |
777 | r = set_put_strdup(domains, domainname); | |
778 | if (r < 0) | |
779 | return r; | |
780 | } else if (r != -ENOENT) | |
781 | return r; | |
782 | } | |
60f067b4 JS |
783 | } |
784 | ||
785 | operstate_str = link_operstate_to_string(operstate); | |
786 | assert(operstate_str); | |
787 | ||
788 | r = fopen_temporary(m->state_file, &f, &temp_path); | |
789 | if (r < 0) | |
5eef597e | 790 | return r; |
60f067b4 JS |
791 | |
792 | fchmod(fileno(f), 0644); | |
793 | ||
794 | fprintf(f, | |
795 | "# This is private data. Do not parse.\n" | |
796 | "OPER_STATE=%s\n", operstate_str); | |
797 | ||
5eef597e MP |
798 | print_string_set(f, "DNS=", dns); |
799 | print_string_set(f, "NTP=", ntp); | |
800 | print_string_set(f, "DOMAINS=", domains); | |
801 | ||
802 | r = fflush_and_check(f); | |
803 | if (r < 0) | |
804 | goto fail; | |
60f067b4 | 805 | |
5eef597e | 806 | if (rename(temp_path, m->state_file) < 0) { |
60f067b4 | 807 | r = -errno; |
5eef597e | 808 | goto fail; |
60f067b4 JS |
809 | } |
810 | ||
e735f4d4 MP |
811 | if (m->operational_state != operstate) { |
812 | m->operational_state = operstate; | |
813 | r = manager_send_changed(m, "OperationalState", NULL); | |
814 | if (r < 0) | |
815 | log_error_errno(r, "Could not emit changed OperationalState: %m"); | |
816 | } | |
817 | ||
5eef597e | 818 | return 0; |
60f067b4 | 819 | |
5eef597e | 820 | fail: |
f47781d8 | 821 | log_error_errno(r, "Failed to save network state to %s: %m", m->state_file); |
5eef597e MP |
822 | unlink(m->state_file); |
823 | unlink(temp_path); | |
60f067b4 JS |
824 | return r; |
825 | } | |
e842803a | 826 | |
5eef597e | 827 | int manager_address_pool_acquire(Manager *m, int family, unsigned prefixlen, union in_addr_union *found) { |
e842803a MB |
828 | AddressPool *p; |
829 | int r; | |
830 | ||
831 | assert(m); | |
832 | assert(prefixlen > 0); | |
833 | assert(found); | |
834 | ||
835 | LIST_FOREACH(address_pools, p, m->address_pools) { | |
836 | if (p->family != family) | |
837 | continue; | |
838 | ||
839 | r = address_pool_acquire(p, prefixlen, found); | |
840 | if (r != 0) | |
841 | return r; | |
842 | } | |
843 | ||
844 | return 0; | |
845 | } | |
e735f4d4 MP |
846 | |
847 | const char *address_family_boolean_to_string(AddressFamilyBoolean b) { | |
848 | if (b == ADDRESS_FAMILY_YES || | |
849 | b == ADDRESS_FAMILY_NO) | |
850 | return yes_no(b == ADDRESS_FAMILY_YES); | |
851 | ||
852 | if (b == ADDRESS_FAMILY_IPV4) | |
853 | return "ipv4"; | |
854 | if (b == ADDRESS_FAMILY_IPV6) | |
855 | return "ipv6"; | |
856 | ||
857 | return NULL; | |
858 | } | |
859 | ||
860 | AddressFamilyBoolean address_family_boolean_from_string(const char *s) { | |
861 | int r; | |
862 | ||
863 | /* Make this a true superset of a boolean */ | |
864 | ||
865 | r = parse_boolean(s); | |
866 | if (r > 0) | |
867 | return ADDRESS_FAMILY_YES; | |
868 | if (r == 0) | |
869 | return ADDRESS_FAMILY_NO; | |
870 | ||
871 | if (streq(s, "ipv4")) | |
872 | return ADDRESS_FAMILY_IPV4; | |
873 | if (streq(s, "ipv6")) | |
874 | return ADDRESS_FAMILY_IPV6; | |
875 | ||
876 | return _ADDRESS_FAMILY_BOOLEAN_INVALID; | |
877 | } | |
878 | ||
879 | DEFINE_CONFIG_PARSE_ENUM(config_parse_address_family_boolean, address_family_boolean, AddressFamilyBoolean, "Failed to parse option"); |