+static int link_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ void *data;
+ uint16_t type;
+ char *ifname = userdata;
+
+ assert(rtnl);
+ assert(m);
+
+ log_info("got link info about %s", ifname);
+ free(ifname);
+
+ while (sd_rtnl_message_read(m, &type, &data) > 0) {
+ switch (type) {
+// case IFLA_MTU:
+// assert(*(unsigned int *) data == 65536);
+// break;
+// case IFLA_QDISC:
+// assert(streq((char *) data, "noqueue"));
+// break;
+ case IFLA_IFNAME:
+ assert(streq((char *) data, "lo"));
+ break;
+ }
+ }
+
+ return 1;
+}
+
+static void test_event_loop(int ifindex) {
+ _cleanup_event_unref_ sd_event *event = NULL;
+ _cleanup_sd_rtnl_unref_ sd_rtnl *rtnl = NULL;
+ _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *m = NULL;
+ char *ifname;
+
+ ifname = strdup("lo2");
+ assert(ifname);
+
+ assert(sd_rtnl_open(0, &rtnl) >= 0);
+ assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, 0, 0, &m) >= 0);
+
+ assert(sd_rtnl_call_async(rtnl, m, &link_handler, ifname, 0, NULL) >= 0);
+
+ assert(sd_event_default(&event) >= 0);
+
+ assert(sd_rtnl_attach_event(rtnl, event, 0) >= 0);
+
+ assert(sd_event_run(event, 0) >= 0);
+
+ assert(sd_rtnl_detach_event(rtnl) >= 0);
+}
+
+static int pipe_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ int *counter = userdata;
+
+ (*counter) --;
+
+ log_info("got reply, %d left in pipe", *counter);
+
+ return sd_rtnl_message_get_errno(m);
+}
+
+static void test_async(int ifindex) {
+ _cleanup_sd_rtnl_unref_ sd_rtnl *rtnl = NULL;
+ _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *m = NULL, *r = NULL;
+ uint32_t serial;
+ char *ifname;
+
+ ifname = strdup("lo");
+ assert(ifname);
+
+ assert(sd_rtnl_open(0, &rtnl) >= 0);
+
+ assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, 0, 0, &m) >= 0);
+
+ assert(sd_rtnl_call_async(rtnl, m, &link_handler, ifname, 0, &serial) >= 0);
+
+ assert(sd_rtnl_wait(rtnl, 0) >= 0);
+ assert(sd_rtnl_process(rtnl, &r) >= 0);
+}
+
+static void test_pipe(int ifindex) {
+ _cleanup_sd_rtnl_unref_ sd_rtnl *rtnl = NULL;
+ _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *m1 = NULL, *m2 = NULL;
+ int counter = 0;
+
+ assert(sd_rtnl_open(0, &rtnl) >= 0);
+
+ assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, 0, 0, &m1) >= 0);
+ assert(sd_rtnl_message_link_new(RTM_GETLINK, ifindex, 0, 0, &m2) >= 0);
+
+ counter ++;
+ assert(sd_rtnl_call_async(rtnl, m1, &pipe_handler, &counter, 0, NULL) >= 0);
+
+ counter ++;
+ assert(sd_rtnl_call_async(rtnl, m2, &pipe_handler, &counter, 0, NULL) >= 0);
+
+ while (counter > 0) {
+ assert(sd_rtnl_wait(rtnl, 0) >= 0);
+ assert(sd_rtnl_process(rtnl, NULL) >= 0);
+ }
+}
+
+static void test_container(void) {
+ _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *m = NULL;
+ uint16_t type;
+ void *data;
+
+ assert(sd_rtnl_message_link_new(RTM_NEWLINK, 0, 0, 0, &m) >= 0);
+
+ assert(sd_rtnl_message_open_container(m, IFLA_LINKINFO) >= 0);
+ assert(sd_rtnl_message_open_container(m, IFLA_LINKINFO) == -EINVAL);
+ assert(sd_rtnl_message_append(m, IFLA_INFO_KIND, "kind") >= 0);
+ assert(sd_rtnl_message_close_container(m) >= 0);
+ assert(sd_rtnl_message_close_container(m) == -EINVAL);
+
+ assert(sd_rtnl_message_read(m, &type, &data) == -EINVAL);
+
+/* TODO: add support for entering containers
+ assert(sd_rtnl_message_read(m, &type, &data) > 0);
+ assert(type == IFLA_INFO_KIND);
+ assert(streq("kind", (char *) data));
+
+ assert(sd_rtnl_message_read(m, &type, &data) == 0);
+*/
+}
+