src/libsystemd/sd-netlink/test-netlink.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <net/if.h>
   4 #include <netinet/ether.h>
   5 #include <linux/genetlink.h>
   6
   7 #include "sd-netlink.h"
   8
   9 #include "alloc-util.h"
  10 #include "ether-addr-util.h"
  11 #include "macro.h"
  12 #include "netlink-util.h"
  13 #include "socket-util.h"
  14 #include "stdio-util.h"
  15 #include "string-util.h"
  16 #include "strv.h"
  17 #include "util.h"
  18
  19 static void test_message_link_bridge(sd_netlink *rtnl) {
  20         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL;
  21         uint32_t cost;
  22
  23         assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_NEWLINK, 1) >= 0);
  24         assert_se(sd_rtnl_message_link_set_family(message, AF_BRIDGE) >= 0);
  25         assert_se(sd_netlink_message_open_container(message, IFLA_PROTINFO) >= 0);
  26         assert_se(sd_netlink_message_append_u32(message, IFLA_BRPORT_COST, 10) >= 0);
  27         assert_se(sd_netlink_message_close_container(message) >= 0);
  28
  29         assert_se(sd_netlink_message_rewind(message, NULL) >= 0);
  30
  31         assert_se(sd_netlink_message_enter_container(message, IFLA_PROTINFO) >= 0);
  32         assert_se(sd_netlink_message_read_u32(message, IFLA_BRPORT_COST, &cost) >= 0);
  33         assert_se(cost == 10);
  34         assert_se(sd_netlink_message_exit_container(message) >= 0);
  35 }
  36
  37 static void test_link_configure(sd_netlink *rtnl, int ifindex) {
  38         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL;
  39         const char *mac = "98:fe:94:3f:c6:18", *name = "test";
  40         char buffer[ETHER_ADDR_TO_STRING_MAX];
  41         uint32_t mtu = 1450, mtu_out;
  42         const char *name_out;
  43         struct ether_addr mac_out;
  44
  45         /* we'd really like to test NEWLINK, but let's not mess with the running kernel */
  46         assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_GETLINK, ifindex) >= 0);
  47         assert_se(sd_netlink_message_append_string(message, IFLA_IFNAME, name) >= 0);
  48         assert_se(sd_netlink_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
  49         assert_se(sd_netlink_message_append_u32(message, IFLA_MTU, mtu) >= 0);
  50
  51         assert_se(sd_netlink_call(rtnl, message, 0, NULL) == 1);
  52         assert_se(sd_netlink_message_rewind(message, NULL) >= 0);
  53
  54         assert_se(sd_netlink_message_read_string(message, IFLA_IFNAME, &name_out) >= 0);
  55         assert_se(streq(name, name_out));
  56
  57         assert_se(sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &mac_out) >= 0);
  58         assert_se(streq(mac, ether_addr_to_string(&mac_out, buffer)));
  59
  60         assert_se(sd_netlink_message_read_u32(message, IFLA_MTU, &mtu_out) >= 0);
  61         assert_se(mtu == mtu_out);
  62 }
  63
  64 static void test_link_get(sd_netlink *rtnl, int ifindex) {
  65         sd_netlink_message *m;
  66         sd_netlink_message *r;
  67         uint32_t mtu = 1500;
  68         const char *str_data;
  69         uint8_t u8_data;
  70         uint32_t u32_data;
  71         struct ether_addr eth_data;
  72
  73         assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
  74         assert_se(m);
  75
  76         /* u8 test cases  */
  77         assert_se(sd_netlink_message_append_u8(m, IFLA_CARRIER, 0) >= 0);
  78         assert_se(sd_netlink_message_append_u8(m, IFLA_OPERSTATE, 0) >= 0);
  79         assert_se(sd_netlink_message_append_u8(m, IFLA_LINKMODE, 0) >= 0);
  80
  81         /* u32 test cases */
  82         assert_se(sd_netlink_message_append_u32(m, IFLA_MTU, mtu) >= 0);
  83         assert_se(sd_netlink_message_append_u32(m, IFLA_GROUP, 0) >= 0);
  84         assert_se(sd_netlink_message_append_u32(m, IFLA_TXQLEN, 0) >= 0);
  85         assert_se(sd_netlink_message_append_u32(m, IFLA_NUM_TX_QUEUES, 0) >= 0);
  86         assert_se(sd_netlink_message_append_u32(m, IFLA_NUM_RX_QUEUES, 0) >= 0);
  87
  88         assert_se(sd_netlink_call(rtnl, m, -1, &r) == 1);
  89
  90         assert_se(sd_netlink_message_read_string(r, IFLA_IFNAME, &str_data) == 0);
  91
  92         assert_se(sd_netlink_message_read_u8(r, IFLA_CARRIER, &u8_data) == 0);
  93         assert_se(sd_netlink_message_read_u8(r, IFLA_OPERSTATE, &u8_data) == 0);
  94         assert_se(sd_netlink_message_read_u8(r, IFLA_LINKMODE, &u8_data) == 0);
  95
  96         assert_se(sd_netlink_message_read_u32(r, IFLA_MTU, &u32_data) == 0);
  97         assert_se(sd_netlink_message_read_u32(r, IFLA_GROUP, &u32_data) == 0);
  98         assert_se(sd_netlink_message_read_u32(r, IFLA_TXQLEN, &u32_data) == 0);
  99         assert_se(sd_netlink_message_read_u32(r, IFLA_NUM_TX_QUEUES, &u32_data) == 0);
 100         assert_se(sd_netlink_message_read_u32(r, IFLA_NUM_RX_QUEUES, &u32_data) == 0);
 101
 102         assert_se(sd_netlink_message_read_ether_addr(r, IFLA_ADDRESS, &eth_data) == 0);
 103
 104         assert_se((m = sd_netlink_message_unref(m)) == NULL);
 105         assert_se((r = sd_netlink_message_unref(r)) == NULL);
 106 }
 107
 108 static void test_address_get(sd_netlink *rtnl, int ifindex) {
 109         sd_netlink_message *m;
 110         sd_netlink_message *r;
 111         struct in_addr in_data;
 112         struct ifa_cacheinfo cache;
 113         const char *label;
 114
 115         assert_se(sd_rtnl_message_new_addr(rtnl, &m, RTM_GETADDR, ifindex, AF_INET) >= 0);
 116         assert_se(m);
 117
 118         assert_se(sd_netlink_call(rtnl, m, -1, &r) == 1);
 119
 120         assert_se(sd_netlink_message_read_in_addr(r, IFA_LOCAL, &in_data) == 0);
 121         assert_se(sd_netlink_message_read_in_addr(r, IFA_ADDRESS, &in_data) == 0);
 122         assert_se(sd_netlink_message_read_string(r, IFA_LABEL, &label) == 0);
 123         assert_se(sd_netlink_message_read_cache_info(r, IFA_CACHEINFO, &cache) == 0);
 124
 125         assert_se((m = sd_netlink_message_unref(m)) == NULL);
 126         assert_se((r = sd_netlink_message_unref(r)) == NULL);
 127
 128 }
 129
 130 static void test_route(sd_netlink *rtnl) {
 131         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
 132         struct in_addr addr, addr_data;
 133         uint32_t index = 2, u32_data;
 134         int r;
 135
 136         r = sd_rtnl_message_new_route(rtnl, &req, RTM_NEWROUTE, AF_INET, RTPROT_STATIC);
 137         if (r < 0) {
 138                 log_error_errno(r, "Could not create RTM_NEWROUTE message: %m");
 139                 return;
 140         }
 141
 142         addr.s_addr = htobe32(INADDR_LOOPBACK);
 143
 144         r = sd_netlink_message_append_in_addr(req, RTA_GATEWAY, &addr);
 145         if (r < 0) {
 146                 log_error_errno(r, "Could not append RTA_GATEWAY attribute: %m");
 147                 return;
 148         }
 149
 150         r = sd_netlink_message_append_u32(req, RTA_OIF, index);
 151         if (r < 0) {
 152                 log_error_errno(r, "Could not append RTA_OIF attribute: %m");
 153                 return;
 154         }
 155
 156         assert_se(sd_netlink_message_rewind(req, NULL) >= 0);
 157
 158         assert_se(sd_netlink_message_read_in_addr(req, RTA_GATEWAY, &addr_data) >= 0);
 159         assert_se(addr_data.s_addr == addr.s_addr);
 160
 161         assert_se(sd_netlink_message_read_u32(req, RTA_OIF, &u32_data) >= 0);
 162         assert_se(u32_data == index);
 163
 164         assert_se((req = sd_netlink_message_unref(req)) == NULL);
 165 }
 166
 167 static void test_multiple(void) {
 168         sd_netlink *rtnl1, *rtnl2;
 169
 170         assert_se(sd_netlink_open(&rtnl1) >= 0);
 171         assert_se(sd_netlink_open(&rtnl2) >= 0);
 172
 173         rtnl1 = sd_netlink_unref(rtnl1);
 174         rtnl2 = sd_netlink_unref(rtnl2);
 175 }
 176
 177 static int link_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
 178         char *ifname = userdata;
 179         const char *data;
 180
 181         assert_se(rtnl);
 182         assert_se(m);
 183         assert_se(userdata);
 184
 185         log_info("%s: got link info about %s", __func__, ifname);
 186         free(ifname);
 187
 188         assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &data) >= 0);
 189         assert_se(streq(data, "lo"));
 190
 191         return 1;
 192 }
 193
 194 static void test_event_loop(int ifindex) {
 195         _cleanup_(sd_event_unrefp) sd_event *event = NULL;
 196         _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
 197         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
 198         char *ifname;
 199
 200         ifname = strdup("lo2");
 201         assert_se(ifname);
 202
 203         assert_se(sd_netlink_open(&rtnl) >= 0);
 204         assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
 205
 206         assert_se(sd_netlink_call_async(rtnl, NULL, m, link_handler, NULL, ifname, 0, NULL) >= 0);
 207
 208         assert_se(sd_event_default(&event) >= 0);
 209
 210         assert_se(sd_netlink_attach_event(rtnl, event, 0) >= 0);
 211
 212         assert_se(sd_event_run(event, 0) >= 0);
 213
 214         assert_se(sd_netlink_detach_event(rtnl) >= 0);
 215
 216         assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
 217 }
 218
 219 static void test_async_destroy(void *userdata) {
 220 }
 221
 222 static void test_async(int ifindex) {
 223         _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
 224         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL, *r = NULL;
 225         _cleanup_(sd_netlink_slot_unrefp) sd_netlink_slot *slot = NULL;
 226         sd_netlink_destroy_t destroy_callback;
 227         const char *description;
 228         char *ifname;
 229
 230         ifname = strdup("lo");
 231         assert_se(ifname);
 232
 233         assert_se(sd_netlink_open(&rtnl) >= 0);
 234
 235         assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
 236
 237         assert_se(sd_netlink_call_async(rtnl, &slot, m, link_handler, test_async_destroy, ifname, 0, "hogehoge") >= 0);
 238
 239         assert_se(sd_netlink_slot_get_netlink(slot) == rtnl);
 240         assert_se(sd_netlink_slot_get_userdata(slot) == ifname);
 241         assert_se(sd_netlink_slot_get_destroy_callback(slot, &destroy_callback) == 1);
 242         assert_se(destroy_callback == test_async_destroy);
 243         assert_se(sd_netlink_slot_get_floating(slot) == 0);
 244         assert_se(sd_netlink_slot_get_description(slot, &description) == 1);
 245         assert_se(streq(description, "hogehoge"));
 246
 247         assert_se(sd_netlink_wait(rtnl, 0) >= 0);
 248         assert_se(sd_netlink_process(rtnl, &r) >= 0);
 249
 250         assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
 251 }
 252
 253 static void test_slot_set(int ifindex) {
 254         _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
 255         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL, *r = NULL;
 256         _cleanup_(sd_netlink_slot_unrefp) sd_netlink_slot *slot = NULL;
 257         sd_netlink_destroy_t destroy_callback;
 258         const char *description;
 259         char *ifname;
 260
 261         ifname = strdup("lo");
 262         assert_se(ifname);
 263
 264         assert_se(sd_netlink_open(&rtnl) >= 0);
 265
 266         assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
 267
 268         assert_se(sd_netlink_call_async(rtnl, &slot, m, link_handler, NULL, NULL, 0, NULL) >= 0);
 269
 270         assert_se(sd_netlink_slot_get_netlink(slot) == rtnl);
 271         assert_se(!sd_netlink_slot_get_userdata(slot));
 272         assert_se(!sd_netlink_slot_set_userdata(slot, ifname));
 273         assert_se(sd_netlink_slot_get_userdata(slot) == ifname);
 274         assert_se(sd_netlink_slot_get_destroy_callback(slot, NULL) == 0);
 275         assert_se(sd_netlink_slot_set_destroy_callback(slot, test_async_destroy) >= 0);
 276         assert_se(sd_netlink_slot_get_destroy_callback(slot, &destroy_callback) == 1);
 277         assert_se(destroy_callback == test_async_destroy);
 278         assert_se(sd_netlink_slot_get_floating(slot) == 0);
 279         assert_se(sd_netlink_slot_set_floating(slot, 1) == 1);
 280         assert_se(sd_netlink_slot_get_floating(slot) == 1);
 281         assert_se(sd_netlink_slot_get_description(slot, NULL) == 0);
 282         assert_se(sd_netlink_slot_set_description(slot, "hogehoge") >= 0);
 283         assert_se(sd_netlink_slot_get_description(slot, &description) == 1);
 284         assert_se(streq(description, "hogehoge"));
 285
 286         assert_se(sd_netlink_wait(rtnl, 0) >= 0);
 287         assert_se(sd_netlink_process(rtnl, &r) >= 0);
 288
 289         assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
 290 }
 291
 292 struct test_async_object {
 293         unsigned n_ref;
 294         char *ifname;
 295 };
 296
 297 static struct test_async_object *test_async_object_free(struct test_async_object *t) {
 298         assert(t);
 299
 300         free(t->ifname);
 301         return mfree(t);
 302 }
 303
 304 DEFINE_PRIVATE_TRIVIAL_REF_UNREF_FUNC(struct test_async_object, test_async_object, test_async_object_free);
 305 DEFINE_TRIVIAL_CLEANUP_FUNC(struct test_async_object *, test_async_object_unref);
 306
 307 static int link_handler2(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
 308         struct test_async_object *t = userdata;
 309         const char *data;
 310
 311         assert_se(rtnl);
 312         assert_se(m);
 313         assert_se(userdata);
 314
 315         log_info("%s: got link info about %s", __func__, t->ifname);
 316
 317         assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &data) >= 0);
 318         assert_se(streq(data, "lo"));
 319
 320         return 1;
 321 }
 322
 323 static void test_async_object_destroy(void *userdata) {
 324         struct test_async_object *t = userdata;
 325
 326         assert(userdata);
 327
 328         log_info("%s: n_ref=%u", __func__, t->n_ref);
 329         test_async_object_unref(t);
 330 }
 331
 332 static void test_async_destroy_callback(int ifindex) {
 333         _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
 334         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL, *r = NULL;
 335         _cleanup_(test_async_object_unrefp) struct test_async_object *t = NULL;
 336         _cleanup_(sd_netlink_slot_unrefp) sd_netlink_slot *slot = NULL;
 337         char *ifname;
 338
 339         assert_se(t = new(struct test_async_object, 1));
 340         assert_se(ifname = strdup("lo"));
 341         *t = (struct test_async_object) {
 342                 .n_ref = 1,
 343                 .ifname = ifname,
 344         };
 345
 346         assert_se(sd_netlink_open(&rtnl) >= 0);
 347
 348         /* destroy callback is called after processing message */
 349         assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
 350         assert_se(sd_netlink_call_async(rtnl, NULL, m, link_handler2, test_async_object_destroy, t, 0, NULL) >= 0);
 351
 352         assert_se(t->n_ref == 1);
 353         assert_se(test_async_object_ref(t));
 354         assert_se(t->n_ref == 2);
 355
 356         assert_se(sd_netlink_wait(rtnl, 0) >= 0);
 357         assert_se(sd_netlink_process(rtnl, &r) == 1);
 358         assert_se(t->n_ref == 1);
 359
 360         assert_se(!sd_netlink_message_unref(m));
 361
 362         /* destroy callback is called when asynchronous call is cancelled, that is, slot is freed. */
 363         assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
 364         assert_se(sd_netlink_call_async(rtnl, &slot, m, link_handler2, test_async_object_destroy, t, 0, NULL) >= 0);
 365
 366         assert_se(t->n_ref == 1);
 367         assert_se(test_async_object_ref(t));
 368         assert_se(t->n_ref == 2);
 369
 370         assert_se(!(slot = sd_netlink_slot_unref(slot)));
 371         assert_se(t->n_ref == 1);
 372
 373         assert_se(!sd_netlink_message_unref(m));
 374
 375         /* destroy callback is also called by sd_netlink_unref() */
 376         assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
 377         assert_se(sd_netlink_call_async(rtnl, NULL, m, link_handler2, test_async_object_destroy, t, 0, NULL) >= 0);
 378
 379         assert_se(t->n_ref == 1);
 380         assert_se(test_async_object_ref(t));
 381         assert_se(t->n_ref == 2);
 382
 383         assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
 384         assert_se(t->n_ref == 1);
 385 }
 386
 387 static int pipe_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
 388         int *counter = userdata;
 389         int r;
 390
 391         (*counter)--;
 392
 393         r = sd_netlink_message_get_errno(m);
 394
 395         log_info_errno(r, "%d left in pipe. got reply: %m", *counter);
 396
 397         assert_se(r >= 0);
 398
 399         return 1;
 400 }
 401
 402 static void test_pipe(int ifindex) {
 403         _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
 404         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m1 = NULL, *m2 = NULL;
 405         int counter = 0;
 406
 407         assert_se(sd_netlink_open(&rtnl) >= 0);
 408
 409         assert_se(sd_rtnl_message_new_link(rtnl, &m1, RTM_GETLINK, ifindex) >= 0);
 410         assert_se(sd_rtnl_message_new_link(rtnl, &m2, RTM_GETLINK, ifindex) >= 0);
 411
 412         counter++;
 413         assert_se(sd_netlink_call_async(rtnl, NULL, m1, pipe_handler, NULL, &counter, 0, NULL) >= 0);
 414
 415         counter++;
 416         assert_se(sd_netlink_call_async(rtnl, NULL, m2, pipe_handler, NULL, &counter, 0, NULL) >= 0);
 417
 418         while (counter > 0) {
 419                 assert_se(sd_netlink_wait(rtnl, 0) >= 0);
 420                 assert_se(sd_netlink_process(rtnl, NULL) >= 0);
 421         }
 422
 423         assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
 424 }
 425
 426 static void test_container(sd_netlink *rtnl) {
 427         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
 428         uint16_t u16_data;
 429         uint32_t u32_data;
 430         const char *string_data;
 431
 432         assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);
 433
 434         assert_se(sd_netlink_message_open_container(m, IFLA_LINKINFO) >= 0);
 435         assert_se(sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, "vlan") >= 0);
 436         assert_se(sd_netlink_message_append_u16(m, IFLA_VLAN_ID, 100) >= 0);
 437         assert_se(sd_netlink_message_close_container(m) >= 0);
 438         assert_se(sd_netlink_message_append_string(m, IFLA_INFO_KIND, "vlan") >= 0);
 439         assert_se(sd_netlink_message_close_container(m) >= 0);
 440         assert_se(sd_netlink_message_close_container(m) == -EINVAL);
 441
 442         assert_se(sd_netlink_message_rewind(m, NULL) >= 0);
 443
 444         assert_se(sd_netlink_message_enter_container(m, IFLA_LINKINFO) >= 0);
 445         assert_se(sd_netlink_message_read_string(m, IFLA_INFO_KIND, &string_data) >= 0);
 446         assert_se(streq("vlan", string_data));
 447
 448         assert_se(sd_netlink_message_enter_container(m, IFLA_INFO_DATA) >= 0);
 449         assert_se(sd_netlink_message_read_u16(m, IFLA_VLAN_ID, &u16_data) >= 0);
 450         assert_se(sd_netlink_message_exit_container(m) >= 0);
 451
 452         assert_se(sd_netlink_message_read_string(m, IFLA_INFO_KIND, &string_data) >= 0);
 453         assert_se(streq("vlan", string_data));
 454         assert_se(sd_netlink_message_exit_container(m) >= 0);
 455
 456         assert_se(sd_netlink_message_read_u32(m, IFLA_LINKINFO, &u32_data) < 0);
 457
 458         assert_se(sd_netlink_message_exit_container(m) == -EINVAL);
 459 }
 460
 461 static void test_match(void) {
 462         _cleanup_(sd_netlink_slot_unrefp) sd_netlink_slot *s1 = NULL, *s2 = NULL;
 463         _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
 464
 465         assert_se(sd_netlink_open(&rtnl) >= 0);
 466
 467         assert_se(sd_netlink_add_match(rtnl, &s1, RTM_NEWLINK, link_handler, NULL, NULL, NULL) >= 0);
 468         assert_se(sd_netlink_add_match(rtnl, &s2, RTM_NEWLINK, link_handler, NULL, NULL, NULL) >= 0);
 469         assert_se(sd_netlink_add_match(rtnl, NULL, RTM_NEWLINK, link_handler, NULL, NULL, NULL) >= 0);
 470
 471         assert_se(!(s1 = sd_netlink_slot_unref(s1)));
 472         assert_se(!(s2 = sd_netlink_slot_unref(s2)));
 473
 474         assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
 475 }
 476
 477 static void test_get_addresses(sd_netlink *rtnl) {
 478         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
 479         sd_netlink_message *m;
 480
 481         assert_se(sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, AF_UNSPEC) >= 0);
 482
 483         assert_se(sd_netlink_call(rtnl, req, 0, &reply) >= 0);
 484
 485         for (m = reply; m; m = sd_netlink_message_next(m)) {
 486                 uint16_t type;
 487                 unsigned char scope, flags;
 488                 int family, ifindex;
 489
 490                 assert_se(sd_netlink_message_get_type(m, &type) >= 0);
 491                 assert_se(type == RTM_NEWADDR);
 492
 493                 assert_se(sd_rtnl_message_addr_get_ifindex(m, &ifindex) >= 0);
 494                 assert_se(sd_rtnl_message_addr_get_family(m, &family) >= 0);
 495                 assert_se(sd_rtnl_message_addr_get_scope(m, &scope) >= 0);
 496                 assert_se(sd_rtnl_message_addr_get_flags(m, &flags) >= 0);
 497
 498                 assert_se(ifindex > 0);
 499                 assert_se(IN_SET(family, AF_INET, AF_INET6));
 500
 501                 log_info("got IPv%u address on ifindex %i", family == AF_INET ? 4: 6, ifindex);
 502         }
 503 }
 504
 505 static void test_message(sd_netlink *rtnl) {
 506         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
 507
 508         assert_se(rtnl_message_new_synthetic_error(rtnl, -ETIMEDOUT, 1, &m) >= 0);
 509         assert_se(sd_netlink_message_get_errno(m) == -ETIMEDOUT);
 510 }
 511
 512 static void test_array(void) {
 513         _cleanup_(sd_netlink_unrefp) sd_netlink *genl = NULL;
 514         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
 515
 516         assert_se(sd_genl_socket_open(&genl) >= 0);
 517         assert_se(sd_genl_message_new(genl, SD_GENL_ID_CTRL, CTRL_CMD_GETFAMILY, &m) >= 0);
 518
 519         assert_se(sd_netlink_message_open_container(m, CTRL_ATTR_MCAST_GROUPS) >= 0);
 520         for (unsigned i = 0; i < 10; i++) {
 521                 char name[STRLEN("hoge") + DECIMAL_STR_MAX(uint32_t)];
 522                 uint32_t id = i + 1000;
 523
 524                 xsprintf(name, "hoge%" PRIu32, id);
 525                 assert_se(sd_netlink_message_open_array(m, i + 1) >= 0);
 526                 assert_se(sd_netlink_message_append_u32(m, CTRL_ATTR_MCAST_GRP_ID, id) >= 0);
 527                 assert_se(sd_netlink_message_append_string(m, CTRL_ATTR_MCAST_GRP_NAME, name) >= 0);
 528                 assert_se(sd_netlink_message_close_container(m) >= 0);
 529         }
 530         assert_se(sd_netlink_message_close_container(m) >= 0);
 531
 532         rtnl_message_seal(m);
 533         assert_se(sd_netlink_message_rewind(m, genl) >= 0);
 534
 535         assert_se(sd_netlink_message_enter_container(m, CTRL_ATTR_MCAST_GROUPS) >= 0);
 536         for (unsigned i = 0; i < 10; i++) {
 537                 char expected[STRLEN("hoge") + DECIMAL_STR_MAX(uint32_t)];
 538                 const char *name;
 539                 uint32_t id;
 540
 541                 assert_se(sd_netlink_message_enter_array(m, i + 1) >= 0);
 542                 assert_se(sd_netlink_message_read_u32(m, CTRL_ATTR_MCAST_GRP_ID, &id) >= 0);
 543                 assert_se(sd_netlink_message_read_string(m, CTRL_ATTR_MCAST_GRP_NAME, &name) >= 0);
 544                 assert_se(sd_netlink_message_exit_container(m) >= 0);
 545
 546                 assert_se(id == i + 1000);
 547                 xsprintf(expected, "hoge%" PRIu32, id);
 548                 assert_se(streq(name, expected));
 549         }
 550         assert_se(sd_netlink_message_exit_container(m) >= 0);
 551 }
 552
 553 static void test_strv(sd_netlink *rtnl) {
 554         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
 555         _cleanup_strv_free_ char **names_in = NULL, **names_out;
 556         const char *p;
 557
 558         assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINKPROP, 1) >= 0);
 559
 560         for (unsigned i = 0; i < 10; i++) {
 561                 char name[STRLEN("hoge") + DECIMAL_STR_MAX(uint32_t)];
 562
 563                 xsprintf(name, "hoge%" PRIu32, i + 1000);
 564                 assert_se(strv_extend(&names_in, name) >= 0);
 565         }
 566
 567         assert_se(sd_netlink_message_open_container(m, IFLA_PROP_LIST) >= 0);
 568         assert_se(sd_netlink_message_append_strv(m, IFLA_ALT_IFNAME, names_in) >= 0);
 569         assert_se(sd_netlink_message_close_container(m) >= 0);
 570
 571         rtnl_message_seal(m);
 572         assert_se(sd_netlink_message_rewind(m, NULL) >= 0);
 573
 574         assert_se(sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &names_out) >= 0);
 575         assert_se(strv_equal(names_in, names_out));
 576
 577         assert_se(sd_netlink_message_enter_container(m, IFLA_PROP_LIST) >= 0);
 578         assert_se(sd_netlink_message_read_string(m, IFLA_ALT_IFNAME, &p) >= 0);
 579         assert_se(streq(p, "hoge1009"));
 580         assert_se(sd_netlink_message_exit_container(m) >= 0);
 581 }
 582
 583 int main(void) {
 584         sd_netlink *rtnl;
 585         sd_netlink_message *m;
 586         sd_netlink_message *r;
 587         const char *string_data;
 588         int if_loopback;
 589         uint16_t type;
 590
 591         test_match();
 592         test_multiple();
 593
 594         assert_se(sd_netlink_open(&rtnl) >= 0);
 595         assert_se(rtnl);
 596
 597         test_route(rtnl);
 598         test_message(rtnl);
 599         test_container(rtnl);
 600         test_array();
 601         test_strv(rtnl);
 602
 603         if_loopback = (int) if_nametoindex("lo");
 604         assert_se(if_loopback > 0);
 605
 606         test_async(if_loopback);
 607         test_slot_set(if_loopback);
 608         test_async_destroy_callback(if_loopback);
 609         test_pipe(if_loopback);
 610         test_event_loop(if_loopback);
 611         test_link_configure(rtnl, if_loopback);
 612
 613         test_get_addresses(rtnl);
 614         test_message_link_bridge(rtnl);
 615
 616         assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, if_loopback) >= 0);
 617         assert_se(m);
 618
 619         assert_se(sd_netlink_message_get_type(m, &type) >= 0);
 620         assert_se(type == RTM_GETLINK);
 621
 622         assert_se(sd_netlink_message_read_string(m, IFLA_IFNAME, &string_data) == -EPERM);
 623
 624         assert_se(sd_netlink_call(rtnl, m, 0, &r) == 1);
 625         assert_se(sd_netlink_message_get_type(r, &type) >= 0);
 626         assert_se(type == RTM_NEWLINK);
 627
 628         assert_se((r = sd_netlink_message_unref(r)) == NULL);
 629
 630         assert_se(sd_netlink_call(rtnl, m, -1, &r) == -EPERM);
 631         assert_se((m = sd_netlink_message_unref(m)) == NULL);
 632         assert_se((r = sd_netlink_message_unref(r)) == NULL);
 633
 634         test_link_get(rtnl, if_loopback);
 635         test_address_get(rtnl, if_loopback);
 636
 637         assert_se((m = sd_netlink_message_unref(m)) == NULL);
 638         assert_se((r = sd_netlink_message_unref(r)) == NULL);
 639         assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
 640
 641         return EXIT_SUCCESS;
 642 }