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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
426c1d38 | 2 | |
426c1d38 YW |
3 | #include "fd-util.h" |
4 | #include "fileio.h" | |
5 | #include "hostname-util.h" | |
6 | #include "log.h" | |
7 | #include "macro.h" | |
a4c9bf2e | 8 | #include "netif-naming-scheme.h" |
426c1d38 YW |
9 | #include "network-generator.h" |
10 | #include "parse-util.h" | |
11 | #include "proc-cmdline.h" | |
12 | #include "socket-util.h" | |
13 | #include "string-table.h" | |
14 | #include "string-util.h" | |
15 | #include "strv.h" | |
16 | ||
17 | /* | |
18 | # .network | |
3abdd4bf JJ |
19 | ip={dhcp|on|any|dhcp6|auto6|either6|link6} |
20 | ip=<interface>:{dhcp|on|any|dhcp6|auto6|link6}[:[<mtu>][:<macaddr>]] | |
21 | ip=<client-IP>:[<peer>]:<gateway-IP>:<netmask>:<client_hostname>:<interface>:{none|off|dhcp|on|any|dhcp6|auto6|link6|ibft}[:[<mtu>][:<macaddr>]] | |
22 | ip=<client-IP>:[<peer>]:<gateway-IP>:<netmask>:<client_hostname>:<interface>:{none|off|dhcp|on|any|dhcp6|auto6|link6|ibft}[:[<dns1>][:<dns2>]] | |
426c1d38 YW |
23 | rd.route=<net>/<netmask>:<gateway>[:<interface>] |
24 | nameserver=<IP> [nameserver=<IP> ...] | |
25 | rd.peerdns=0 | |
26 | ||
27 | # .link | |
28 | ifname=<interface>:<MAC> | |
a4c9bf2e | 29 | net.ifname-policy=policy1[,policy2,...][,<MAC>] # This is an original rule, not supported by other tools. |
426c1d38 YW |
30 | |
31 | # .netdev | |
32 | vlan=<vlanname>:<phydevice> | |
33 | bond=<bondname>[:<bondslaves>:[:<options>[:<mtu>]]] | |
34 | team=<teammaster>:<teamslaves> # not supported | |
35 | bridge=<bridgename>:<ethnames> | |
36 | ||
37 | # ignored | |
38 | bootdev=<interface> | |
39 | BOOTIF=<MAC> | |
40 | rd.bootif=0 | |
41 | biosdevname=0 | |
42 | rd.neednet=1 | |
43 | */ | |
44 | ||
45 | static const char * const dracut_dhcp_type_table[_DHCP_TYPE_MAX] = { | |
46 | [DHCP_TYPE_NONE] = "none", | |
47 | [DHCP_TYPE_OFF] = "off", | |
48 | [DHCP_TYPE_ON] = "on", | |
49 | [DHCP_TYPE_ANY] = "any", | |
318a53d1 | 50 | [DHCP_TYPE_DHCP4] = "dhcp", |
426c1d38 YW |
51 | [DHCP_TYPE_DHCP6] = "dhcp6", |
52 | [DHCP_TYPE_AUTO6] = "auto6", | |
53 | [DHCP_TYPE_EITHER6] = "either6", | |
54 | [DHCP_TYPE_IBFT] = "ibft", | |
3abdd4bf | 55 | [DHCP_TYPE_LINK6] = "link6", |
426c1d38 YW |
56 | }; |
57 | ||
58 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(dracut_dhcp_type, DHCPType); | |
59 | ||
60 | static const char * const networkd_dhcp_type_table[_DHCP_TYPE_MAX] = { | |
61 | [DHCP_TYPE_NONE] = "no", | |
62 | [DHCP_TYPE_OFF] = "no", | |
63 | [DHCP_TYPE_ON] = "yes", | |
64 | [DHCP_TYPE_ANY] = "yes", | |
318a53d1 | 65 | [DHCP_TYPE_DHCP4] = "ipv4", |
426c1d38 YW |
66 | [DHCP_TYPE_DHCP6] = "ipv6", |
67 | [DHCP_TYPE_AUTO6] = "no", /* TODO: enable other setting? */ | |
68 | [DHCP_TYPE_EITHER6] = "ipv6", /* TODO: enable other setting? */ | |
69 | [DHCP_TYPE_IBFT] = "no", | |
3abdd4bf | 70 | [DHCP_TYPE_LINK6] = "no", |
426c1d38 YW |
71 | }; |
72 | ||
73 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(networkd_dhcp_type, DHCPType); | |
74 | ||
75 | static Address *address_free(Address *address) { | |
76 | if (!address) | |
77 | return NULL; | |
78 | ||
79 | if (address->network) | |
80 | LIST_REMOVE(addresses, address->network->addresses, address); | |
81 | ||
82 | return mfree(address); | |
83 | } | |
84 | ||
85 | static int address_new(Network *network, int family, unsigned char prefixlen, | |
86 | union in_addr_union *addr, union in_addr_union *peer, Address **ret) { | |
87 | Address *address; | |
88 | ||
89 | assert(network); | |
90 | ||
91 | address = new(Address, 1); | |
92 | if (!address) | |
93 | return -ENOMEM; | |
94 | ||
95 | *address = (Address) { | |
96 | .family = family, | |
97 | .prefixlen = prefixlen, | |
98 | .address = *addr, | |
99 | .peer = *peer, | |
100 | }; | |
101 | ||
102 | LIST_PREPEND(addresses, network->addresses, address); | |
103 | ||
104 | address->network = network; | |
105 | ||
106 | if (ret) | |
107 | *ret = address; | |
108 | return 0; | |
109 | } | |
110 | ||
111 | static Route *route_free(Route *route) { | |
112 | if (!route) | |
113 | return NULL; | |
114 | ||
115 | if (route->network) | |
116 | LIST_REMOVE(routes, route->network->routes, route); | |
117 | ||
118 | return mfree(route); | |
119 | } | |
120 | ||
121 | static int route_new(Network *network, int family, unsigned char prefixlen, | |
122 | union in_addr_union *dest, union in_addr_union *gateway, Route **ret) { | |
123 | Route *route; | |
124 | ||
125 | assert(network); | |
126 | ||
127 | route = new(Route, 1); | |
128 | if (!route) | |
129 | return -ENOMEM; | |
130 | ||
131 | *route = (Route) { | |
132 | .family = family, | |
133 | .prefixlen = prefixlen, | |
134 | .dest = dest ? *dest : IN_ADDR_NULL, | |
135 | .gateway = *gateway, | |
136 | }; | |
137 | ||
138 | LIST_PREPEND(routes, network->routes, route); | |
139 | ||
140 | route->network = network; | |
141 | ||
142 | if (ret) | |
143 | *ret = route; | |
144 | return 0; | |
145 | } | |
146 | ||
147 | static Network *network_free(Network *network) { | |
148 | Address *address; | |
149 | Route *route; | |
150 | ||
151 | if (!network) | |
152 | return NULL; | |
153 | ||
154 | free(network->ifname); | |
155 | free(network->hostname); | |
156 | strv_free(network->dns); | |
157 | free(network->vlan); | |
158 | free(network->bridge); | |
159 | free(network->bond); | |
160 | ||
161 | while ((address = network->addresses)) | |
162 | address_free(address); | |
163 | ||
164 | while ((route = network->routes)) | |
165 | route_free(route); | |
166 | ||
167 | return mfree(network); | |
168 | } | |
169 | ||
170 | DEFINE_TRIVIAL_CLEANUP_FUNC(Network*, network_free); | |
171 | ||
172 | static int network_new(Context *context, const char *name, Network **ret) { | |
173 | _cleanup_(network_freep) Network *network = NULL; | |
174 | _cleanup_free_ char *ifname = NULL; | |
175 | int r; | |
176 | ||
177 | assert(context); | |
178 | ||
179 | if (!isempty(name) && !ifname_valid(name)) | |
180 | return -EINVAL; | |
181 | ||
182 | ifname = strdup(name); | |
183 | if (!ifname) | |
184 | return -ENOMEM; | |
185 | ||
186 | network = new(Network, 1); | |
187 | if (!network) | |
188 | return -ENOMEM; | |
189 | ||
190 | *network = (Network) { | |
191 | .ifname = TAKE_PTR(ifname), | |
192 | .dhcp_type = _DHCP_TYPE_INVALID, | |
193 | .dhcp_use_dns = -1, | |
194 | }; | |
195 | ||
c6194e88 | 196 | r = hashmap_ensure_put(&context->networks_by_name, &string_hash_ops, network->ifname, network); |
426c1d38 YW |
197 | if (r < 0) |
198 | return r; | |
199 | ||
200 | if (ret) | |
201 | *ret = network; | |
202 | ||
203 | TAKE_PTR(network); | |
204 | return 0; | |
205 | } | |
206 | ||
207 | Network *network_get(Context *context, const char *ifname) { | |
208 | return hashmap_get(context->networks_by_name, ifname); | |
209 | } | |
210 | ||
211 | static NetDev *netdev_free(NetDev *netdev) { | |
212 | if (!netdev) | |
213 | return NULL; | |
214 | ||
215 | free(netdev->ifname); | |
216 | free(netdev->kind); | |
217 | return mfree(netdev); | |
218 | } | |
219 | ||
220 | DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_free); | |
221 | ||
222 | static int netdev_new(Context *context, const char *_kind, const char *_ifname, NetDev **ret) { | |
223 | _cleanup_(netdev_freep) NetDev *netdev = NULL; | |
224 | _cleanup_free_ char *kind = NULL, *ifname = NULL; | |
225 | int r; | |
226 | ||
227 | assert(context); | |
228 | ||
229 | if (!ifname_valid(_ifname)) | |
230 | return -EINVAL; | |
231 | ||
232 | kind = strdup(_kind); | |
233 | if (!kind) | |
234 | return -ENOMEM; | |
235 | ||
236 | ifname = strdup(_ifname); | |
237 | if (!ifname) | |
238 | return -ENOMEM; | |
239 | ||
240 | netdev = new(NetDev, 1); | |
241 | if (!netdev) | |
242 | return -ENOMEM; | |
243 | ||
244 | *netdev = (NetDev) { | |
245 | .kind = TAKE_PTR(kind), | |
246 | .ifname = TAKE_PTR(ifname), | |
247 | }; | |
248 | ||
c6194e88 | 249 | r = hashmap_ensure_put(&context->netdevs_by_name, &string_hash_ops, netdev->ifname, netdev); |
426c1d38 YW |
250 | if (r < 0) |
251 | return r; | |
252 | ||
253 | if (ret) | |
254 | *ret = netdev; | |
255 | ||
256 | TAKE_PTR(netdev); | |
257 | return 0; | |
258 | } | |
259 | ||
260 | NetDev *netdev_get(Context *context, const char *ifname) { | |
261 | return hashmap_get(context->netdevs_by_name, ifname); | |
262 | } | |
263 | ||
264 | static Link *link_free(Link *link) { | |
265 | if (!link) | |
266 | return NULL; | |
267 | ||
a4c9bf2e | 268 | free(link->filename); |
426c1d38 | 269 | free(link->ifname); |
a4c9bf2e YW |
270 | strv_free(link->policies); |
271 | strv_free(link->alt_policies); | |
426c1d38 YW |
272 | return mfree(link); |
273 | } | |
274 | ||
275 | DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free); | |
276 | ||
eb3e86ae YW |
277 | static int link_new( |
278 | Context *context, | |
279 | const char *name, | |
280 | const struct hw_addr_data *mac, | |
281 | Link **ret) { | |
282 | ||
426c1d38 | 283 | _cleanup_(link_freep) Link *link = NULL; |
a4c9bf2e | 284 | _cleanup_free_ char *ifname = NULL, *filename = NULL; |
426c1d38 YW |
285 | int r; |
286 | ||
287 | assert(context); | |
a4c9bf2e | 288 | assert(mac); |
426c1d38 | 289 | |
a4c9bf2e YW |
290 | if (name) { |
291 | if (!ifname_valid(name)) | |
292 | return -EINVAL; | |
426c1d38 | 293 | |
a4c9bf2e YW |
294 | ifname = strdup(name); |
295 | if (!ifname) | |
296 | return -ENOMEM; | |
297 | ||
298 | filename = strdup(name); | |
299 | if (!filename) | |
300 | return -ENOMEM; | |
301 | } | |
302 | ||
303 | if (!filename) { | |
304 | filename = strdup(hw_addr_is_null(mac) ? "default" : | |
305 | HW_ADDR_TO_STR_FULL(mac, HW_ADDR_TO_STRING_NO_COLON)); | |
306 | if (!filename) | |
307 | return -ENOMEM; | |
308 | } | |
426c1d38 YW |
309 | |
310 | link = new(Link, 1); | |
311 | if (!link) | |
312 | return -ENOMEM; | |
313 | ||
314 | *link = (Link) { | |
a4c9bf2e | 315 | .filename = TAKE_PTR(filename), |
426c1d38 YW |
316 | .ifname = TAKE_PTR(ifname), |
317 | .mac = *mac, | |
318 | }; | |
319 | ||
a4c9bf2e | 320 | r = hashmap_ensure_put(&context->links_by_filename, &string_hash_ops, link->filename, link); |
426c1d38 YW |
321 | if (r < 0) |
322 | return r; | |
323 | ||
324 | if (ret) | |
325 | *ret = link; | |
326 | ||
327 | TAKE_PTR(link); | |
328 | return 0; | |
329 | } | |
330 | ||
a4c9bf2e YW |
331 | Link *link_get(Context *context, const char *filename) { |
332 | assert(context); | |
333 | assert(filename); | |
334 | return hashmap_get(context->links_by_filename, filename); | |
426c1d38 YW |
335 | } |
336 | ||
337 | static int network_set_dhcp_type(Context *context, const char *ifname, const char *dhcp_type) { | |
338 | Network *network; | |
339 | DHCPType t; | |
340 | int r; | |
341 | ||
342 | t = dracut_dhcp_type_from_string(dhcp_type); | |
343 | if (t < 0) | |
7211c853 | 344 | return t; |
426c1d38 YW |
345 | |
346 | network = network_get(context, ifname); | |
347 | if (!network) { | |
348 | r = network_new(context, ifname, &network); | |
349 | if (r < 0) | |
350 | return r; | |
351 | } | |
352 | ||
353 | network->dhcp_type = t; | |
354 | return 0; | |
355 | } | |
356 | ||
357 | static int network_set_hostname(Context *context, const char *ifname, const char *hostname) { | |
358 | Network *network; | |
359 | ||
360 | network = network_get(context, ifname); | |
361 | if (!network) | |
362 | return -ENODEV; | |
363 | ||
364 | return free_and_strdup(&network->hostname, hostname); | |
365 | } | |
366 | ||
367 | static int network_set_mtu(Context *context, const char *ifname, int family, const char *mtu) { | |
368 | Network *network; | |
369 | ||
370 | network = network_get(context, ifname); | |
371 | if (!network) | |
372 | return -ENODEV; | |
373 | ||
374 | return parse_mtu(family, mtu, &network->mtu); | |
375 | } | |
376 | ||
377 | static int network_set_mac_address(Context *context, const char *ifname, const char *mac) { | |
378 | Network *network; | |
379 | ||
380 | network = network_get(context, ifname); | |
381 | if (!network) | |
382 | return -ENODEV; | |
383 | ||
227e9ce2 | 384 | return parse_ether_addr(mac, &network->mac); |
426c1d38 YW |
385 | } |
386 | ||
387 | static int network_set_address(Context *context, const char *ifname, int family, unsigned char prefixlen, | |
388 | union in_addr_union *addr, union in_addr_union *peer) { | |
389 | Network *network; | |
390 | ||
94876904 | 391 | if (!in_addr_is_set(family, addr)) |
426c1d38 YW |
392 | return 0; |
393 | ||
394 | network = network_get(context, ifname); | |
395 | if (!network) | |
396 | return -ENODEV; | |
397 | ||
398 | return address_new(network, family, prefixlen, addr, peer, NULL); | |
399 | } | |
400 | ||
401 | static int network_set_route(Context *context, const char *ifname, int family, unsigned char prefixlen, | |
402 | union in_addr_union *dest, union in_addr_union *gateway) { | |
403 | Network *network; | |
404 | int r; | |
405 | ||
94876904 | 406 | if (!in_addr_is_set(family, gateway)) |
426c1d38 YW |
407 | return 0; |
408 | ||
409 | network = network_get(context, ifname); | |
410 | if (!network) { | |
411 | r = network_new(context, ifname, &network); | |
412 | if (r < 0) | |
413 | return r; | |
414 | } | |
415 | ||
416 | return route_new(network, family, prefixlen, dest, gateway, NULL); | |
417 | } | |
418 | ||
419 | static int network_set_dns(Context *context, const char *ifname, const char *dns) { | |
420 | union in_addr_union a; | |
421 | Network *network; | |
422 | int family, r; | |
423 | ||
424 | r = in_addr_from_string_auto(dns, &family, &a); | |
425 | if (r < 0) | |
426 | return r; | |
427 | ||
428 | network = network_get(context, ifname); | |
429 | if (!network) { | |
430 | r = network_new(context, ifname, &network); | |
431 | if (r < 0) | |
432 | return r; | |
433 | } | |
434 | ||
435 | return strv_extend(&network->dns, dns); | |
436 | } | |
437 | ||
438 | static int network_set_dhcp_use_dns(Context *context, const char *ifname, bool value) { | |
439 | Network *network; | |
440 | int r; | |
441 | ||
442 | network = network_get(context, ifname); | |
443 | if (!network) { | |
444 | r = network_new(context, ifname, &network); | |
445 | if (r < 0) | |
446 | return r; | |
447 | } | |
448 | ||
449 | network->dhcp_use_dns = value; | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
454 | static int network_set_vlan(Context *context, const char *ifname, const char *value) { | |
455 | Network *network; | |
456 | int r; | |
457 | ||
458 | network = network_get(context, ifname); | |
459 | if (!network) { | |
460 | r = network_new(context, ifname, &network); | |
461 | if (r < 0) | |
462 | return r; | |
463 | } | |
464 | ||
465 | return free_and_strdup(&network->vlan, value); | |
466 | } | |
467 | ||
468 | static int network_set_bridge(Context *context, const char *ifname, const char *value) { | |
469 | Network *network; | |
470 | int r; | |
471 | ||
472 | network = network_get(context, ifname); | |
473 | if (!network) { | |
474 | r = network_new(context, ifname, &network); | |
475 | if (r < 0) | |
476 | return r; | |
477 | } | |
478 | ||
479 | return free_and_strdup(&network->bridge, value); | |
480 | } | |
481 | ||
482 | static int network_set_bond(Context *context, const char *ifname, const char *value) { | |
483 | Network *network; | |
484 | int r; | |
485 | ||
486 | network = network_get(context, ifname); | |
487 | if (!network) { | |
488 | r = network_new(context, ifname, &network); | |
489 | if (r < 0) | |
490 | return r; | |
491 | } | |
492 | ||
493 | return free_and_strdup(&network->bond, value); | |
494 | } | |
495 | ||
496 | static int parse_cmdline_ip_mtu_mac(Context *context, const char *ifname, int family, const char *value) { | |
497 | const char *mtu, *p; | |
498 | int r; | |
499 | ||
500 | /* [<mtu>][:<macaddr>] */ | |
501 | ||
502 | p = strchr(value, ':'); | |
503 | if (!p) | |
504 | mtu = value; | |
505 | else | |
2f82562b | 506 | mtu = strndupa_safe(value, p - value); |
426c1d38 YW |
507 | |
508 | r = network_set_mtu(context, ifname, family, mtu); | |
509 | if (r < 0) | |
510 | return r; | |
511 | ||
512 | if (!p) | |
513 | return 0; | |
514 | ||
515 | r = network_set_mac_address(context, ifname, p + 1); | |
516 | if (r < 0) | |
517 | return r; | |
518 | ||
519 | return 0; | |
520 | } | |
521 | ||
522 | static int parse_ip_address_one(int family, const char **value, union in_addr_union *ret) { | |
523 | const char *p = *value, *q, *buf; | |
524 | int r; | |
525 | ||
526 | if (p[0] == ':') { | |
527 | *value = p + 1; | |
528 | return 0; | |
529 | } | |
530 | ||
531 | if (family == AF_INET6) { | |
532 | if (p[0] != '[') | |
533 | return -EINVAL; | |
534 | ||
535 | q = strchr(p + 1, ']'); | |
536 | if (!q) | |
537 | return -EINVAL; | |
538 | ||
539 | if (q[1] != ':') | |
540 | return -EINVAL; | |
541 | ||
2f82562b | 542 | buf = strndupa_safe(p + 1, q - p - 1); |
426c1d38 YW |
543 | p = q + 2; |
544 | } else { | |
545 | q = strchr(p, ':'); | |
546 | if (!q) | |
547 | return -EINVAL; | |
548 | ||
2f82562b | 549 | buf = strndupa_safe(p, q - p); |
426c1d38 YW |
550 | p = q + 1; |
551 | } | |
552 | ||
553 | r = in_addr_from_string(family, buf, ret); | |
554 | if (r < 0) | |
555 | return r; | |
556 | ||
557 | *value = p; | |
558 | return 1; | |
559 | } | |
560 | ||
561 | static int parse_netmask_or_prefixlen(int family, const char **value, unsigned char *ret) { | |
562 | union in_addr_union netmask; | |
563 | const char *p, *q; | |
564 | int r; | |
565 | ||
566 | r = parse_ip_address_one(family, value, &netmask); | |
567 | if (r > 0) { | |
568 | if (family == AF_INET6) | |
569 | /* TODO: Not supported yet. */ | |
570 | return -EINVAL; | |
571 | ||
572 | *ret = in4_addr_netmask_to_prefixlen(&netmask.in); | |
573 | } else if (r == 0) | |
574 | *ret = family == AF_INET6 ? 128 : 32; | |
575 | else { | |
576 | p = strchr(*value, ':'); | |
577 | if (!p) | |
578 | return -EINVAL; | |
579 | ||
2f82562b | 580 | q = strndupa_safe(*value, p - *value); |
426c1d38 YW |
581 | r = safe_atou8(q, ret); |
582 | if (r < 0) | |
583 | return r; | |
584 | ||
585 | *value = p + 1; | |
586 | } | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
591 | static int parse_cmdline_ip_address(Context *context, int family, const char *value) { | |
592 | union in_addr_union addr = {}, peer = {}, gateway = {}; | |
21a925a4 | 593 | const char *hostname = NULL, *ifname, *dhcp_type, *dns, *p; |
426c1d38 YW |
594 | unsigned char prefixlen; |
595 | int r; | |
596 | ||
3abdd4bf JJ |
597 | /* ip=<client-IP>:[<peer>]:<gateway-IP>:<netmask>:<client_hostname>:<interface>:{none|off|dhcp|on|any|dhcp6|auto6|ibft|link6}[:[<mtu>][:<macaddr>]] |
598 | * ip=<client-IP>:[<peer>]:<gateway-IP>:<netmask>:<client_hostname>:<interface>:{none|off|dhcp|on|any|dhcp6|auto6|ibft|link6}[:[<dns1>][:<dns2>]] */ | |
426c1d38 YW |
599 | |
600 | r = parse_ip_address_one(family, &value, &addr); | |
601 | if (r < 0) | |
602 | return r; | |
603 | r = parse_ip_address_one(family, &value, &peer); | |
604 | if (r < 0) | |
605 | return r; | |
606 | r = parse_ip_address_one(family, &value, &gateway); | |
607 | if (r < 0) | |
608 | return r; | |
609 | r = parse_netmask_or_prefixlen(family, &value, &prefixlen); | |
610 | if (r < 0) | |
611 | return r; | |
612 | ||
613 | /* hostname */ | |
614 | p = strchr(value, ':'); | |
615 | if (!p) | |
616 | return -EINVAL; | |
617 | ||
21a925a4 | 618 | if (p != value) { |
2f82562b | 619 | hostname = strndupa_safe(value, p - value); |
52ef5dd7 | 620 | if (!hostname_is_valid(hostname, 0)) |
21a925a4 YW |
621 | return -EINVAL; |
622 | } | |
426c1d38 YW |
623 | |
624 | value = p + 1; | |
625 | ||
626 | /* ifname */ | |
627 | p = strchr(value, ':'); | |
628 | if (!p) | |
629 | return -EINVAL; | |
630 | ||
2f82562b | 631 | ifname = strndupa_safe(value, p - value); |
426c1d38 YW |
632 | |
633 | value = p + 1; | |
634 | ||
635 | /* dhcp_type */ | |
636 | p = strchr(value, ':'); | |
637 | if (!p) | |
638 | dhcp_type = value; | |
639 | else | |
2f82562b | 640 | dhcp_type = strndupa_safe(value, p - value); |
426c1d38 YW |
641 | |
642 | r = network_set_dhcp_type(context, ifname, dhcp_type); | |
643 | if (r < 0) | |
644 | return r; | |
645 | ||
646 | /* set values */ | |
647 | r = network_set_hostname(context, ifname, hostname); | |
648 | if (r < 0) | |
649 | return r; | |
650 | ||
651 | r = network_set_address(context, ifname, family, prefixlen, &addr, &peer); | |
652 | if (r < 0) | |
653 | return r; | |
654 | ||
655 | r = network_set_route(context, ifname, family, 0, NULL, &gateway); | |
656 | if (r < 0) | |
657 | return r; | |
658 | ||
659 | if (!p) | |
660 | return 0; | |
661 | ||
662 | /* First, try [<mtu>][:<macaddr>] */ | |
663 | r = parse_cmdline_ip_mtu_mac(context, ifname, AF_UNSPEC, p + 1); | |
664 | if (r >= 0) | |
665 | return 0; | |
666 | ||
667 | /* Next, try [<dns1>][:<dns2>] */ | |
668 | value = p + 1; | |
669 | p = strchr(value, ':'); | |
670 | if (!p) { | |
671 | r = network_set_dns(context, ifname, value); | |
672 | if (r < 0) | |
673 | return r; | |
674 | } else { | |
2f82562b | 675 | dns = strndupa_safe(value, p - value); |
426c1d38 YW |
676 | r = network_set_dns(context, ifname, dns); |
677 | if (r < 0) | |
678 | return r; | |
679 | r = network_set_dns(context, ifname, p + 1); | |
680 | if (r < 0) | |
681 | return r; | |
682 | } | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
687 | static int parse_cmdline_ip_interface(Context *context, const char *value) { | |
688 | const char *ifname, *dhcp_type, *p; | |
689 | int r; | |
690 | ||
3abdd4bf | 691 | /* ip=<interface>:{dhcp|on|any|dhcp6|auto6|link6}[:[<mtu>][:<macaddr>]] */ |
426c1d38 YW |
692 | |
693 | p = strchr(value, ':'); | |
694 | if (!p) | |
695 | return -EINVAL; | |
696 | ||
2f82562b | 697 | ifname = strndupa_safe(value, p - value); |
426c1d38 YW |
698 | |
699 | value = p + 1; | |
700 | p = strchr(value, ':'); | |
701 | if (!p) | |
702 | dhcp_type = value; | |
703 | else | |
2f82562b | 704 | dhcp_type = strndupa_safe(value, p - value); |
426c1d38 YW |
705 | |
706 | r = network_set_dhcp_type(context, ifname, dhcp_type); | |
707 | if (r < 0) | |
708 | return r; | |
709 | ||
710 | if (!p) | |
711 | return 0; | |
712 | ||
713 | return parse_cmdline_ip_mtu_mac(context, ifname, AF_UNSPEC, p + 1); | |
714 | } | |
715 | ||
716 | static int parse_cmdline_ip(Context *context, const char *key, const char *value) { | |
717 | const char *p; | |
718 | int r; | |
719 | ||
720 | if (proc_cmdline_value_missing(key, value)) | |
721 | return -EINVAL; | |
722 | ||
723 | p = strchr(value, ':'); | |
724 | if (!p) | |
3abdd4bf | 725 | /* ip={dhcp|on|any|dhcp6|auto6|either6|link6} */ |
426c1d38 YW |
726 | return network_set_dhcp_type(context, "", value); |
727 | ||
728 | if (value[0] == '[') | |
729 | return parse_cmdline_ip_address(context, AF_INET6, value); | |
730 | ||
731 | r = parse_cmdline_ip_address(context, AF_INET, value); | |
732 | if (r < 0) | |
733 | return parse_cmdline_ip_interface(context, value); | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
738 | static int parse_cmdline_rd_route(Context *context, const char *key, const char *value) { | |
739 | union in_addr_union addr = {}, gateway = {}; | |
740 | unsigned char prefixlen; | |
741 | const char *buf, *p; | |
742 | int family, r; | |
743 | ||
744 | /* rd.route=<net>/<netmask>:<gateway>[:<interface>] */ | |
745 | ||
746 | if (proc_cmdline_value_missing(key, value)) | |
747 | return -EINVAL; | |
748 | ||
749 | if (value[0] == '[') { | |
750 | p = strchr(value, ']'); | |
751 | if (!p) | |
752 | return -EINVAL; | |
753 | ||
754 | if (p[1] != ':') | |
755 | return -EINVAL; | |
756 | ||
2f82562b | 757 | buf = strndupa_safe(value + 1, p - value - 1); |
426c1d38 YW |
758 | value = p + 2; |
759 | family = AF_INET6; | |
760 | } else { | |
761 | p = strchr(value, ':'); | |
762 | if (!p) | |
763 | return -EINVAL; | |
764 | ||
2f82562b | 765 | buf = strndupa_safe(value, p - value); |
426c1d38 YW |
766 | value = p + 1; |
767 | family = AF_INET; | |
768 | } | |
769 | ||
770 | r = in_addr_prefix_from_string(buf, family, &addr, &prefixlen); | |
771 | if (r < 0) | |
772 | return r; | |
773 | ||
774 | p = strchr(value, ':'); | |
775 | if (!p) | |
776 | value = strjoina(value, ":"); | |
777 | ||
778 | r = parse_ip_address_one(family, &value, &gateway); | |
779 | if (r < 0) | |
780 | return r; | |
781 | ||
782 | return network_set_route(context, value, family, prefixlen, &addr, &gateway); | |
783 | } | |
784 | ||
785 | static int parse_cmdline_nameserver(Context *context, const char *key, const char *value) { | |
786 | if (proc_cmdline_value_missing(key, value)) | |
787 | return -EINVAL; | |
788 | ||
789 | return network_set_dns(context, "", value); | |
790 | } | |
791 | ||
792 | static int parse_cmdline_rd_peerdns(Context *context, const char *key, const char *value) { | |
793 | int r; | |
794 | ||
795 | if (proc_cmdline_value_missing(key, value)) | |
796 | return network_set_dhcp_use_dns(context, "", true); | |
797 | ||
798 | r = parse_boolean(value); | |
799 | if (r < 0) | |
800 | return r; | |
801 | ||
802 | return network_set_dhcp_use_dns(context, "", r); | |
803 | } | |
804 | ||
805 | static int parse_cmdline_vlan(Context *context, const char *key, const char *value) { | |
806 | const char *name, *p; | |
807 | NetDev *netdev; | |
808 | int r; | |
809 | ||
810 | if (proc_cmdline_value_missing(key, value)) | |
811 | return -EINVAL; | |
812 | ||
813 | p = strchr(value, ':'); | |
814 | if (!p) | |
815 | return -EINVAL; | |
816 | ||
2f82562b | 817 | name = strndupa_safe(value, p - value); |
426c1d38 YW |
818 | |
819 | netdev = netdev_get(context, name); | |
820 | if (!netdev) { | |
821 | r = netdev_new(context, "vlan", name, &netdev); | |
822 | if (r < 0) | |
823 | return r; | |
824 | } | |
825 | ||
826 | return network_set_vlan(context, p + 1, name); | |
827 | } | |
828 | ||
829 | static int parse_cmdline_bridge(Context *context, const char *key, const char *value) { | |
830 | const char *name, *p; | |
831 | NetDev *netdev; | |
832 | int r; | |
833 | ||
834 | if (proc_cmdline_value_missing(key, value)) | |
835 | return -EINVAL; | |
836 | ||
837 | p = strchr(value, ':'); | |
838 | if (!p) | |
839 | return -EINVAL; | |
840 | ||
2f82562b | 841 | name = strndupa_safe(value, p - value); |
426c1d38 YW |
842 | |
843 | netdev = netdev_get(context, name); | |
844 | if (!netdev) { | |
845 | r = netdev_new(context, "bridge", name, &netdev); | |
846 | if (r < 0) | |
847 | return r; | |
848 | } | |
849 | ||
850 | p++; | |
851 | if (isempty(p)) | |
852 | return -EINVAL; | |
853 | ||
854 | for (;;) { | |
855 | _cleanup_free_ char *word = NULL; | |
856 | ||
857 | r = extract_first_word(&p, &word, ",", 0); | |
38288f0b | 858 | if (r <= 0) |
426c1d38 YW |
859 | return r; |
860 | ||
861 | r = network_set_bridge(context, word, name); | |
862 | if (r < 0) | |
863 | return r; | |
864 | } | |
865 | } | |
866 | ||
867 | static int parse_cmdline_bond(Context *context, const char *key, const char *value) { | |
868 | const char *name, *slaves, *p; | |
869 | NetDev *netdev; | |
870 | int r; | |
871 | ||
872 | if (proc_cmdline_value_missing(key, value)) | |
873 | return -EINVAL; | |
874 | ||
875 | p = strchr(value, ':'); | |
876 | if (!p) | |
877 | return -EINVAL; | |
878 | ||
2f82562b | 879 | name = strndupa_safe(value, p - value); |
426c1d38 YW |
880 | |
881 | netdev = netdev_get(context, name); | |
882 | if (!netdev) { | |
883 | r = netdev_new(context, "bond", name, &netdev); | |
884 | if (r < 0) | |
885 | return r; | |
886 | } | |
887 | ||
888 | value = p + 1; | |
889 | p = strchr(value, ':'); | |
890 | if (!p) | |
891 | slaves = value; | |
892 | else | |
2f82562b | 893 | slaves = strndupa_safe(value, p - value); |
426c1d38 YW |
894 | |
895 | if (isempty(slaves)) | |
896 | return -EINVAL; | |
897 | ||
898 | for (const char *q = slaves; ; ) { | |
899 | _cleanup_free_ char *word = NULL; | |
900 | ||
901 | r = extract_first_word(&q, &word, ",", 0); | |
902 | if (r == 0) | |
903 | break; | |
904 | if (r < 0) | |
905 | return r; | |
906 | ||
907 | r = network_set_bond(context, word, name); | |
908 | if (r < 0) | |
909 | return r; | |
910 | } | |
911 | ||
912 | if (!p) | |
913 | return 0; | |
914 | ||
915 | value = p + 1; | |
916 | p = strchr(value, ':'); | |
917 | if (!p) | |
918 | /* TODO: set bonding options */ | |
919 | return 0; | |
920 | ||
921 | return parse_mtu(AF_UNSPEC, p + 1, &netdev->mtu); | |
922 | } | |
923 | ||
924 | static int parse_cmdline_ifname(Context *context, const char *key, const char *value) { | |
eb3e86ae | 925 | struct hw_addr_data mac; |
426c1d38 YW |
926 | const char *name, *p; |
927 | int r; | |
928 | ||
929 | /* ifname=<interface>:<MAC> */ | |
930 | ||
931 | if (proc_cmdline_value_missing(key, value)) | |
932 | return -EINVAL; | |
933 | ||
934 | p = strchr(value, ':'); | |
935 | if (!p) | |
936 | return -EINVAL; | |
937 | ||
2f82562b | 938 | name = strndupa_safe(value, p - value); |
426c1d38 | 939 | |
eb3e86ae | 940 | r = parse_hw_addr(p + 1, &mac); |
426c1d38 YW |
941 | if (r < 0) |
942 | return r; | |
943 | ||
944 | return link_new(context, name, &mac, NULL); | |
945 | } | |
946 | ||
a4c9bf2e YW |
947 | static int parse_cmdline_ifname_policy(Context *context, const char *key, const char *value) { |
948 | _cleanup_strv_free_ char **policies = NULL, **alt_policies = NULL; | |
949 | struct hw_addr_data mac = HW_ADDR_NULL; | |
950 | Link *link; | |
951 | int r; | |
952 | ||
953 | /* net.ifname-policy=policy1[,policy2,...][,<MAC>] */ | |
954 | ||
955 | if (proc_cmdline_value_missing(key, value)) | |
956 | return -EINVAL; | |
957 | ||
958 | for (const char *q = value; ; ) { | |
959 | _cleanup_free_ char *word = NULL; | |
960 | NamePolicy p; | |
961 | ||
962 | r = extract_first_word(&q, &word, ",", 0); | |
963 | if (r == 0) | |
964 | break; | |
965 | if (r < 0) | |
966 | return r; | |
967 | ||
968 | p = name_policy_from_string(word); | |
969 | if (p < 0) { | |
970 | r = parse_hw_addr(word, &mac); | |
971 | if (r < 0) | |
972 | return r; | |
973 | ||
974 | if (hw_addr_is_null(&mac)) | |
975 | return -EINVAL; | |
976 | ||
977 | if (!isempty(q)) | |
978 | return -EINVAL; | |
979 | ||
980 | break; | |
981 | } | |
982 | ||
983 | if (alternative_names_policy_from_string(word) >= 0) { | |
984 | r = strv_extend(&alt_policies, word); | |
985 | if (r < 0) | |
986 | return r; | |
987 | } | |
988 | ||
989 | r = strv_consume(&policies, TAKE_PTR(word)); | |
990 | if (r < 0) | |
991 | return r; | |
992 | } | |
993 | ||
994 | if (strv_isempty(policies)) | |
995 | return -EINVAL; | |
996 | ||
997 | r = link_new(context, NULL, &mac, &link); | |
998 | if (r < 0) | |
999 | return r; | |
1000 | ||
1001 | link->policies = TAKE_PTR(policies); | |
1002 | link->alt_policies = TAKE_PTR(alt_policies); | |
1003 | return 0; | |
1004 | } | |
1005 | ||
426c1d38 YW |
1006 | int parse_cmdline_item(const char *key, const char *value, void *data) { |
1007 | Context *context = data; | |
1008 | ||
1009 | assert(key); | |
1010 | assert(data); | |
1011 | ||
1012 | if (streq(key, "ip")) | |
1013 | return parse_cmdline_ip(context, key, value); | |
1014 | if (streq(key, "rd.route")) | |
1015 | return parse_cmdline_rd_route(context, key, value); | |
1016 | if (streq(key, "nameserver")) | |
1017 | return parse_cmdline_nameserver(context, key, value); | |
1018 | if (streq(key, "rd.peerdns")) | |
1019 | return parse_cmdline_rd_peerdns(context, key, value); | |
1020 | if (streq(key, "vlan")) | |
1021 | return parse_cmdline_vlan(context, key, value); | |
1022 | if (streq(key, "bridge")) | |
1023 | return parse_cmdline_bridge(context, key, value); | |
1024 | if (streq(key, "bond")) | |
1025 | return parse_cmdline_bond(context, key, value); | |
1026 | if (streq(key, "ifname")) | |
1027 | return parse_cmdline_ifname(context, key, value); | |
a4c9bf2e YW |
1028 | if (streq(key, "net.ifname-policy")) |
1029 | return parse_cmdline_ifname_policy(context, key, value); | |
426c1d38 YW |
1030 | |
1031 | return 0; | |
1032 | } | |
1033 | ||
1034 | int context_merge_networks(Context *context) { | |
1035 | Network *all, *network; | |
426c1d38 YW |
1036 | int r; |
1037 | ||
1038 | assert(context); | |
1039 | ||
1040 | /* Copy settings about the following options | |
1041 | rd.route=<net>/<netmask>:<gateway>[:<interface>] | |
1042 | nameserver=<IP> [nameserver=<IP> ...] | |
1043 | rd.peerdns=0 */ | |
1044 | ||
1045 | all = network_get(context, ""); | |
1046 | if (!all) | |
1047 | return 0; | |
1048 | ||
1049 | if (hashmap_size(context->networks_by_name) <= 1) | |
1050 | return 0; | |
1051 | ||
90e74a66 | 1052 | HASHMAP_FOREACH(network, context->networks_by_name) { |
426c1d38 YW |
1053 | if (network == all) |
1054 | continue; | |
1055 | ||
1056 | network->dhcp_use_dns = all->dhcp_use_dns; | |
1057 | ||
1058 | r = strv_extend_strv(&network->dns, all->dns, false); | |
1059 | if (r < 0) | |
1060 | return r; | |
1061 | ||
1062 | LIST_FOREACH(routes, route, all->routes) { | |
1063 | r = route_new(network, route->family, route->prefixlen, &route->dest, &route->gateway, NULL); | |
1064 | if (r < 0) | |
1065 | return r; | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | assert_se(hashmap_remove(context->networks_by_name, "") == all); | |
1070 | network_free(all); | |
1071 | return 0; | |
1072 | } | |
1073 | ||
1074 | void context_clear(Context *context) { | |
1075 | if (!context) | |
1076 | return; | |
1077 | ||
1078 | hashmap_free_with_destructor(context->networks_by_name, network_free); | |
1079 | hashmap_free_with_destructor(context->netdevs_by_name, netdev_free); | |
a4c9bf2e | 1080 | hashmap_free_with_destructor(context->links_by_filename, link_free); |
426c1d38 YW |
1081 | } |
1082 | ||
1083 | static int address_dump(Address *address, FILE *f) { | |
1084 | _cleanup_free_ char *addr = NULL, *peer = NULL; | |
1085 | int r; | |
1086 | ||
1087 | r = in_addr_prefix_to_string(address->family, &address->address, address->prefixlen, &addr); | |
1088 | if (r < 0) | |
1089 | return r; | |
1090 | ||
94876904 | 1091 | if (in_addr_is_set(address->family, &address->peer)) { |
426c1d38 YW |
1092 | r = in_addr_to_string(address->family, &address->peer, &peer); |
1093 | if (r < 0) | |
1094 | return r; | |
1095 | } | |
1096 | ||
1097 | fprintf(f, | |
1098 | "\n[Address]\n" | |
1099 | "Address=%s\n", | |
1100 | addr); | |
1101 | ||
1102 | if (peer) | |
1103 | fprintf(f, "Peer=%s\n", peer); | |
1104 | ||
1105 | return 0; | |
1106 | } | |
1107 | ||
1108 | static int route_dump(Route *route, FILE *f) { | |
1109 | _cleanup_free_ char *dest = NULL, *gateway = NULL; | |
1110 | int r; | |
1111 | ||
94876904 | 1112 | if (in_addr_is_set(route->family, &route->dest)) { |
426c1d38 YW |
1113 | r = in_addr_prefix_to_string(route->family, &route->dest, route->prefixlen, &dest); |
1114 | if (r < 0) | |
1115 | return r; | |
1116 | } | |
1117 | ||
1118 | r = in_addr_to_string(route->family, &route->gateway, &gateway); | |
1119 | if (r < 0) | |
1120 | return r; | |
1121 | ||
1122 | fputs("\n[Route]\n", f); | |
1123 | if (dest) | |
1124 | fprintf(f, "Destination=%s\n", dest); | |
1125 | fprintf(f, "Gateway=%s\n", gateway); | |
1126 | ||
1127 | return 0; | |
1128 | } | |
1129 | ||
1130 | void network_dump(Network *network, FILE *f) { | |
426c1d38 | 1131 | const char *dhcp; |
426c1d38 YW |
1132 | |
1133 | assert(network); | |
1134 | assert(f); | |
1135 | ||
1136 | fprintf(f, | |
1137 | "[Match]\n" | |
1138 | "Name=%s\n", | |
1139 | isempty(network->ifname) ? "*" : network->ifname); | |
1140 | ||
1141 | fputs("\n[Link]\n", f); | |
1142 | ||
1143 | if (!ether_addr_is_null(&network->mac)) | |
4b574fd8 | 1144 | fprintf(f, "MACAddress=%s\n", ETHER_ADDR_TO_STR(&network->mac)); |
426c1d38 YW |
1145 | if (network->mtu > 0) |
1146 | fprintf(f, "MTUBytes=%" PRIu32 "\n", network->mtu); | |
1147 | ||
1148 | fputs("\n[Network]\n", f); | |
1149 | ||
1150 | dhcp = networkd_dhcp_type_to_string(network->dhcp_type); | |
1151 | if (dhcp) | |
1152 | fprintf(f, "DHCP=%s\n", dhcp); | |
1153 | ||
1154 | if (!strv_isempty(network->dns)) | |
1155 | STRV_FOREACH(dns, network->dns) | |
1156 | fprintf(f, "DNS=%s\n", *dns); | |
1157 | ||
1158 | if (network->vlan) | |
1159 | fprintf(f, "VLAN=%s\n", network->vlan); | |
1160 | ||
1161 | if (network->bridge) | |
1162 | fprintf(f, "Bridge=%s\n", network->bridge); | |
1163 | ||
1164 | if (network->bond) | |
1165 | fprintf(f, "Bond=%s\n", network->bond); | |
1166 | ||
1167 | fputs("\n[DHCP]\n", f); | |
1168 | ||
1169 | if (!isempty(network->hostname)) | |
1170 | fprintf(f, "Hostname=%s\n", network->hostname); | |
1171 | ||
1172 | if (network->dhcp_use_dns >= 0) | |
1173 | fprintf(f, "UseDNS=%s\n", yes_no(network->dhcp_use_dns)); | |
1174 | ||
1175 | LIST_FOREACH(addresses, address, network->addresses) | |
1176 | (void) address_dump(address, f); | |
1177 | ||
1178 | LIST_FOREACH(routes, route, network->routes) | |
1179 | (void) route_dump(route, f); | |
1180 | } | |
1181 | ||
1182 | void netdev_dump(NetDev *netdev, FILE *f) { | |
1183 | assert(netdev); | |
1184 | assert(f); | |
1185 | ||
1186 | fprintf(f, | |
1187 | "[NetDev]\n" | |
1188 | "Kind=%s\n" | |
1189 | "Name=%s\n", | |
1190 | netdev->kind, | |
1191 | netdev->ifname); | |
1192 | ||
1193 | if (netdev->mtu > 0) | |
1194 | fprintf(f, "MTUBytes=%" PRIu32 "\n", netdev->mtu); | |
1195 | } | |
1196 | ||
1197 | void link_dump(Link *link, FILE *f) { | |
426c1d38 YW |
1198 | assert(link); |
1199 | assert(f); | |
1200 | ||
1201 | fputs("[Match]\n", f); | |
1202 | ||
eb3e86ae YW |
1203 | if (!hw_addr_is_null(&link->mac)) |
1204 | fprintf(f, "MACAddress=%s\n", HW_ADDR_TO_STR(&link->mac)); | |
a4c9bf2e YW |
1205 | else |
1206 | fputs("OriginalName=*\n", f); | |
426c1d38 | 1207 | |
a4c9bf2e YW |
1208 | fputs("\n[Link]\n", f); |
1209 | ||
1210 | if (!isempty(link->ifname)) | |
1211 | fprintf(f, "Name=%s\n", link->ifname); | |
1212 | ||
1213 | if (!strv_isempty(link->policies)) { | |
1214 | fputs("NamePolicy=", f); | |
1215 | fputstrv(f, link->policies, " ", NULL); | |
1216 | fputc('\n', f); | |
1217 | } | |
1218 | ||
1219 | if (!strv_isempty(link->alt_policies)) { | |
1220 | fputs("AlternativeNamesPolicy=", f); | |
1221 | fputstrv(f, link->alt_policies, " ", NULL); | |
1222 | fputc('\n', f); | |
1223 | } | |
426c1d38 YW |
1224 | } |
1225 | ||
1226 | int network_format(Network *network, char **ret) { | |
1227 | _cleanup_free_ char *s = NULL; | |
1228 | size_t sz = 0; | |
1229 | int r; | |
1230 | ||
1231 | assert(network); | |
1232 | assert(ret); | |
1233 | ||
1234 | { | |
1235 | _cleanup_fclose_ FILE *f = NULL; | |
1236 | ||
1237 | f = open_memstream_unlocked(&s, &sz); | |
1238 | if (!f) | |
1239 | return -ENOMEM; | |
1240 | ||
1241 | network_dump(network, f); | |
1242 | ||
1243 | /* Add terminating 0, so that the output buffer is a valid string. */ | |
1244 | fputc('\0', f); | |
1245 | ||
1246 | r = fflush_and_check(f); | |
1247 | } | |
1248 | if (r < 0) | |
1249 | return r; | |
1250 | ||
1251 | assert(s); | |
1252 | *ret = TAKE_PTR(s); | |
1253 | assert(sz > 0); | |
1254 | return (int) sz - 1; | |
1255 | } | |
1256 | ||
1257 | int netdev_format(NetDev *netdev, char **ret) { | |
1258 | _cleanup_free_ char *s = NULL; | |
1259 | size_t sz = 0; | |
1260 | int r; | |
1261 | ||
1262 | assert(netdev); | |
1263 | assert(ret); | |
1264 | ||
1265 | { | |
1266 | _cleanup_fclose_ FILE *f = NULL; | |
1267 | ||
1268 | f = open_memstream_unlocked(&s, &sz); | |
1269 | if (!f) | |
1270 | return -ENOMEM; | |
1271 | ||
1272 | netdev_dump(netdev, f); | |
1273 | ||
1274 | /* Add terminating 0, so that the output buffer is a valid string. */ | |
1275 | fputc('\0', f); | |
1276 | ||
1277 | r = fflush_and_check(f); | |
1278 | } | |
1279 | if (r < 0) | |
1280 | return r; | |
1281 | ||
1282 | assert(s); | |
1283 | *ret = TAKE_PTR(s); | |
1284 | assert(sz > 0); | |
1285 | return (int) sz - 1; | |
1286 | } | |
1287 | ||
1288 | int link_format(Link *link, char **ret) { | |
1289 | _cleanup_free_ char *s = NULL; | |
1290 | size_t sz = 0; | |
1291 | int r; | |
1292 | ||
1293 | assert(link); | |
1294 | assert(ret); | |
1295 | ||
1296 | { | |
1297 | _cleanup_fclose_ FILE *f = NULL; | |
1298 | ||
1299 | f = open_memstream_unlocked(&s, &sz); | |
1300 | if (!f) | |
1301 | return -ENOMEM; | |
1302 | ||
1303 | link_dump(link, f); | |
1304 | ||
1305 | /* Add terminating 0, so that the output buffer is a valid string. */ | |
1306 | fputc('\0', f); | |
1307 | ||
1308 | r = fflush_and_check(f); | |
1309 | } | |
1310 | if (r < 0) | |
1311 | return r; | |
1312 | ||
1313 | assert(s); | |
1314 | *ret = TAKE_PTR(s); | |
1315 | assert(sz > 0); | |
1316 | return (int) sz - 1; | |
1317 | } |