static int test_acd(const char *ifname, const char *address) { _cleanup_(sd_event_unrefp) sd_event *e = NULL; _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL, *reply = NULL; union in_addr_union pa; struct ether_addr ha; int ifindex; assert_se(in_addr_from_string(AF_INET, address, &pa) >= 0); assert_se(sd_event_new(&e) >= 0); assert_se(sd_netlink_open(&rtnl) >= 0); assert_se(sd_netlink_attach_event(rtnl, e, 0) >= 0); assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, 0) >= 0); assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, ifname) >= 0); assert_se(sd_netlink_call(rtnl, m, 0, &reply) >= 0); assert_se(sd_rtnl_message_link_get_ifindex(reply, &ifindex) >= 0); assert_se(sd_netlink_message_read_ether_addr(reply, IFLA_ADDRESS, &ha) >= 0); client_run(ifindex, &pa.in, &ha, e); return EXIT_SUCCESS; }
static int decode_and_sort_links(sd_netlink_message *m, LinkInfo **ret) { _cleanup_free_ LinkInfo *links = NULL; size_t size = 0, c = 0; sd_netlink_message *i; int r; for (i = m; i; i = sd_netlink_message_next(i)) { const char *name; unsigned iftype; uint16_t type; int ifindex; r = sd_netlink_message_get_type(i, &type); if (r < 0) return r; if (type != RTM_NEWLINK) continue; r = sd_rtnl_message_link_get_ifindex(i, &ifindex); if (r < 0) return r; r = sd_netlink_message_read_string(i, IFLA_IFNAME, &name); if (r < 0) return r; r = sd_rtnl_message_link_get_type(i, &iftype); if (r < 0) return r; if (!GREEDY_REALLOC(links, size, c+1)) return -ENOMEM; links[c].name = name; links[c].ifindex = ifindex; links[c].iftype = iftype; c++; } qsort_safe(links, c, sizeof(LinkInfo), link_info_compare); *ret = links; links = NULL; return (int) c; }
static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata) { Manager *m = userdata; Link *link; unsigned flags; int r, ifindex; r = sd_rtnl_message_link_get_ifindex(message, &ifindex); if (r < 0) return 0; link = hashmap_get(m->links, &ifindex); if (!link) return 0; r = sd_rtnl_message_link_get_flags(message, &flags); if (r < 0) return 0; r = link_update_flags(link, flags); if (r < 0) return 0; return 1; }