/* SPDX-License-Identifier: LGPL-2.1+ */ /*** This file is part of systemd. Copyright 2014 Lennart Poettering ***/ #include #include #include #include #include "sd-device.h" #include "sd-hwdb.h" #include "sd-lldp.h" #include "sd-netlink.h" #include "sd-network.h" #include "alloc-util.h" #include "arphrd-list.h" #include "device-util.h" #include "ether-addr-util.h" #include "fd-util.h" #include "hwdb-util.h" #include "local-addresses.h" #include "locale-util.h" #include "macro.h" #include "netlink-util.h" #include "pager.h" #include "parse-util.h" #include "socket-util.h" #include "sparse-endian.h" #include "stdio-util.h" #include "string-table.h" #include "string-util.h" #include "strv.h" #include "strxcpyx.h" #include "terminal-util.h" #include "util.h" #include "verbs.h" static bool arg_no_pager = false; static bool arg_legend = true; static bool arg_all = false; static char *link_get_type_string(unsigned short iftype, sd_device *d) { const char *t; char *p; if (d) { const char *devtype = NULL; (void) sd_device_get_devtype(d, &devtype); if (!isempty(devtype)) return strdup(devtype); } t = arphrd_to_name(iftype); if (!t) return NULL; p = strdup(t); if (!p) return NULL; ascii_strlower(p); return p; } static void operational_state_to_color(const char *state, const char **on, const char **off) { assert(on); assert(off); if (streq_ptr(state, "routable")) { *on = ansi_highlight_green(); *off = ansi_normal(); } else if (streq_ptr(state, "degraded")) { *on = ansi_highlight_yellow(); *off = ansi_normal(); } else *on = *off = ""; } static void setup_state_to_color(const char *state, const char **on, const char **off) { assert(on); assert(off); if (streq_ptr(state, "configured")) { *on = ansi_highlight_green(); *off = ansi_normal(); } else if (streq_ptr(state, "configuring")) { *on = ansi_highlight_yellow(); *off = ansi_normal(); } else if (STRPTR_IN_SET(state, "failed", "linger")) { *on = ansi_highlight_red(); *off = ansi_normal(); } else *on = *off = ""; } typedef struct LinkInfo { char name[IFNAMSIZ+1]; int ifindex; unsigned short iftype; struct ether_addr mac_address; uint32_t mtu; bool has_mac_address:1; bool has_mtu:1; } LinkInfo; static int link_info_compare(const void *a, const void *b) { const LinkInfo *x = a, *y = b; return x->ifindex - y->ifindex; } static int decode_link(sd_netlink_message *m, LinkInfo *info) { const char *name; uint16_t type; int r; assert(m); assert(info); r = sd_netlink_message_get_type(m, &type); if (r < 0) return r; if (type != RTM_NEWLINK) return 0; r = sd_rtnl_message_link_get_ifindex(m, &info->ifindex); if (r < 0) return r; r = sd_netlink_message_read_string(m, IFLA_IFNAME, &name); if (r < 0) return r; r = sd_rtnl_message_link_get_type(m, &info->iftype); if (r < 0) return r; strscpy(info->name, sizeof info->name, name); info->has_mac_address = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &info->mac_address) >= 0 && memcmp(&info->mac_address, ÐER_ADDR_NULL, sizeof(struct ether_addr)) != 0; info->has_mtu = sd_netlink_message_read_u32(m, IFLA_MTU, &info->mtu) && info->mtu > 0; return 1; } static int acquire_link_info_strv(sd_netlink *rtnl, char **l, LinkInfo **ret) { _cleanup_free_ LinkInfo *links = NULL; char **i; size_t c = 0; int r; assert(rtnl); assert(ret); links = new(LinkInfo, strv_length(l)); if (!links) return log_oom(); STRV_FOREACH(i, l) { _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; int ifindex; if (parse_ifindex(*i, &ifindex) >= 0) r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, ifindex); else { r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0); if (r < 0) return rtnl_log_create_error(r); r = sd_netlink_message_append_string(req, IFLA_IFNAME, *i); } if (r < 0) return rtnl_log_create_error(r); r = sd_netlink_call(rtnl, req, 0, &reply); if (r < 0) return log_error_errno(r, "Failed to request link: %m"); r = decode_link(reply, links + c); if (r < 0) return r; if (r > 0) c++; } qsort_safe(links, c, sizeof(LinkInfo), link_info_compare); *ret = TAKE_PTR(links); return (int) c; } static int acquire_link_info_all(sd_netlink *rtnl, LinkInfo **ret) { _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; _cleanup_free_ LinkInfo *links = NULL; size_t allocated = 0, c = 0; sd_netlink_message *i; int r; assert(rtnl); assert(ret); r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0); if (r < 0) return rtnl_log_create_error(r); r = sd_netlink_message_request_dump(req, true); if (r < 0) return rtnl_log_create_error(r); r = sd_netlink_call(rtnl, req, 0, &reply); if (r < 0) return log_error_errno(r, "Failed to enumerate links: %m"); for (i = reply; i; i = sd_netlink_message_next(i)) { if (!GREEDY_REALLOC(links, allocated, c+1)) return -ENOMEM; r = decode_link(i, links + c); if (r < 0) return r; if (r > 0) c++; } qsort_safe(links, c, sizeof(LinkInfo), link_info_compare); *ret = TAKE_PTR(links); return (int) c; } static int list_links(int argc, char *argv[], void *userdata) { _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; _cleanup_free_ LinkInfo *links = NULL; int c, i, r; r = sd_netlink_open(&rtnl); if (r < 0) return log_error_errno(r, "Failed to connect to netlink: %m"); if (argc > 1) c = acquire_link_info_strv(rtnl, argv + 1, &links); else c = acquire_link_info_all(rtnl, &links); if (c < 0) return c; (void) pager_open(arg_no_pager, false); if (arg_legend) printf("%3s %-16s %-18s %-11s %-10s\n", "IDX", "LINK", "TYPE", "OPERATIONAL", "SETUP"); for (i = 0; i < c; i++) { _cleanup_free_ char *setup_state = NULL, *operational_state = NULL; _cleanup_(sd_device_unrefp) sd_device *d = NULL; const char *on_color_operational, *off_color_operational, *on_color_setup, *off_color_setup; char devid[2 + DECIMAL_STR_MAX(int)]; _cleanup_free_ char *t = NULL; (void) sd_network_link_get_operational_state(links[i].ifindex, &operational_state); operational_state_to_color(operational_state, &on_color_operational, &off_color_operational); r = sd_network_link_get_setup_state(links[i].ifindex, &setup_state); if (r == -ENODATA) /* If there's no info available about this iface, it's unmanaged by networkd */ setup_state = strdup("unmanaged"); setup_state_to_color(setup_state, &on_color_setup, &off_color_setup); xsprintf(devid, "n%i", links[i].ifindex); (void) sd_device_new_from_device_id(&d, devid); t = link_get_type_string(links[i].iftype, d); printf("%3i %-16s %-18s %s%-11s%s %s%-10s%s\n", links[i].ifindex, links[i].name, strna(t), on_color_operational, strna(operational_state), off_color_operational, on_color_setup, strna(setup_state), off_color_setup); } if (arg_legend) printf("\n%i links listed.\n", c); return 0; } /* IEEE Organizationally Unique Identifier vendor string */ static int ieee_oui(sd_hwdb *hwdb, const struct ether_addr *mac, char **ret) { const char *description; char modalias[STRLEN("OUI:XXYYXXYYXXYY") + 1], *desc; int r; assert(ret); if (!hwdb) return -EINVAL; if (!mac) return -EINVAL; /* skip commonly misused 00:00:00 (Xerox) prefix */ if (memcmp(mac, "\0\0\0", 3) == 0) return -EINVAL; xsprintf(modalias, "OUI:" ETHER_ADDR_FORMAT_STR, ETHER_ADDR_FORMAT_VAL(*mac)); r = sd_hwdb_get(hwdb, modalias, "ID_OUI_FROM_DATABASE", &description); if (r < 0) return r; desc = strdup(description); if (!desc) return -ENOMEM; *ret = desc; return 0; } static int get_gateway_description( sd_netlink *rtnl, sd_hwdb *hwdb, int ifindex, int family, union in_addr_union *gateway, char **gateway_description) { _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; sd_netlink_message *m; int r; assert(rtnl); assert(ifindex >= 0); assert(IN_SET(family, AF_INET, AF_INET6)); assert(gateway); assert(gateway_description); r = sd_rtnl_message_new_neigh(rtnl, &req, RTM_GETNEIGH, ifindex, family); if (r < 0) return r; r = sd_netlink_message_request_dump(req, true); if (r < 0) return r; r = sd_netlink_call(rtnl, req, 0, &reply); if (r < 0) return r; for (m = reply; m; m = sd_netlink_message_next(m)) { union in_addr_union gw = {}; struct ether_addr mac = {}; uint16_t type; int ifi, fam; r = sd_netlink_message_get_errno(m); if (r < 0) { log_error_errno(r, "got error: %m"); continue; } r = sd_netlink_message_get_type(m, &type); if (r < 0) { log_error_errno(r, "could not get type: %m"); continue; } if (type != RTM_NEWNEIGH) { log_error("type is not RTM_NEWNEIGH"); continue; } r = sd_rtnl_message_neigh_get_family(m, &fam); if (r < 0) { log_error_errno(r, "could not get family: %m"); continue; } if (fam != family) { log_error("family is not correct"); continue; } r = sd_rtnl_message_neigh_get_ifindex(m, &ifi); if (r < 0) { log_error_errno(r, "could not get ifindex: %m"); continue; } if (ifindex > 0 && ifi != ifindex) continue; switch (fam) { case AF_INET: r = sd_netlink_message_read_in_addr(m, NDA_DST, &gw.in); if (r < 0) continue; break; case AF_INET6: r = sd_netlink_message_read_in6_addr(m, NDA_DST, &gw.in6); if (r < 0) continue; break; default: continue; } if (!in_addr_equal(fam, &gw, gateway)) continue; r = sd_netlink_message_read_ether_addr(m, NDA_LLADDR, &mac); if (r < 0) continue; r = ieee_oui(hwdb, &mac, gateway_description); if (r < 0) continue; return 0; } return -ENODATA; } static int dump_gateways( sd_netlink *rtnl, sd_hwdb *hwdb, const char *prefix, int ifindex) { _cleanup_free_ struct local_address *local = NULL; int r, n, i; assert(rtnl); assert(prefix); n = local_gateways(rtnl, ifindex, AF_UNSPEC, &local); if (n < 0) return n; for (i = 0; i < n; i++) { _cleanup_free_ char *gateway = NULL, *description = NULL; r = in_addr_to_string(local[i].family, &local[i].address, &gateway); if (r < 0) return r; r = get_gateway_description(rtnl, hwdb, local[i].ifindex, local[i].family, &local[i].address, &description); if (r < 0) log_debug_errno(r, "Could not get description of gateway: %m"); printf("%*s%s", (int) strlen(prefix), i == 0 ? prefix : "", gateway); if (description) printf(" (%s)", description); /* Show interface name for the entry if we show * entries for all interfaces */ if (ifindex <= 0) { char name[IF_NAMESIZE+1]; if (if_indextoname(local[i].ifindex, name)) { fputs(" on ", stdout); fputs(name, stdout); } else printf(" on %%%i", local[i].ifindex); } fputc('\n', stdout); } return 0; } static int dump_addresses( sd_netlink *rtnl, const char *prefix, int ifindex) { _cleanup_free_ struct local_address *local = NULL; int r, n, i; assert(rtnl); assert(prefix); n = local_addresses(rtnl, ifindex, AF_UNSPEC, &local); if (n < 0) return n; for (i = 0; i < n; i++) { _cleanup_free_ char *pretty = NULL; r = in_addr_to_string(local[i].family, &local[i].address, &pretty); if (r < 0) return r; printf("%*s%s", (int) strlen(prefix), i == 0 ? prefix : "", pretty); if (ifindex <= 0) { char name[IF_NAMESIZE+1]; if (if_indextoname(local[i].ifindex, name)) { fputs(" on ", stdout); fputs(name, stdout); } else printf(" on %%%i", local[i].ifindex); } fputc('\n', stdout); } return 0; } static int dump_address_labels(sd_netlink *rtnl) { _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; sd_netlink_message *m; int r; assert(rtnl); r = sd_rtnl_message_new_addrlabel(rtnl, &req, RTM_GETADDRLABEL, 0, AF_INET6); if (r < 0) return log_error_errno(r, "Could not allocate RTM_GETADDRLABEL message: %m"); r = sd_netlink_message_request_dump(req, true); if (r < 0) return r; r = sd_netlink_call(rtnl, req, 0, &reply); if (r < 0) return r; printf("%10s/%s %30s\n", "Prefix", "Prefixlen", "Label"); for (m = reply; m; m = sd_netlink_message_next(m)) { _cleanup_free_ char *pretty = NULL; union in_addr_union prefix = {}; uint8_t prefixlen; uint32_t label; r = sd_netlink_message_get_errno(m); if (r < 0) { log_error_errno(r, "got error: %m"); continue; } r = sd_netlink_message_read_u32(m, IFAL_LABEL, &label); if (r < 0 && r != -ENODATA) { log_error_errno(r, "Could not read IFAL_LABEL, ignoring: %m"); continue; } r = sd_netlink_message_read_in6_addr(m, IFAL_ADDRESS, &prefix.in6); if (r < 0) continue; r = in_addr_to_string(AF_INET6, &prefix, &pretty); if (r < 0) continue; r = sd_rtnl_message_addrlabel_get_prefixlen(m, &prefixlen); if (r < 0) continue; printf("%10s/%-5u %30u\n", pretty, prefixlen, label); } return 0; } static int list_address_labels(int argc, char *argv[], void *userdata) { _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; int r; r = sd_netlink_open(&rtnl); if (r < 0) return log_error_errno(r, "Failed to connect to netlink: %m"); dump_address_labels(rtnl); return 0; } static int open_lldp_neighbors(int ifindex, FILE **ret) { _cleanup_free_ char *p = NULL; FILE *f; if (asprintf(&p, "/run/systemd/netif/lldp/%i", ifindex) < 0) return -ENOMEM; f = fopen(p, "re"); if (!f) return -errno; *ret = f; return 0; } static int next_lldp_neighbor(FILE *f, sd_lldp_neighbor **ret) { _cleanup_free_ void *raw = NULL; size_t l; le64_t u; int r; assert(f); assert(ret); l = fread(&u, 1, sizeof(u), f); if (l == 0 && feof(f)) return 0; if (l != sizeof(u)) return -EBADMSG; raw = new(uint8_t, le64toh(u)); if (!raw) return -ENOMEM; if (fread(raw, 1, le64toh(u), f) != le64toh(u)) return -EBADMSG; r = sd_lldp_neighbor_from_raw(ret, raw, le64toh(u)); if (r < 0) return r; return 1; } static int dump_lldp_neighbors(const char *prefix, int ifindex) { _cleanup_fclose_ FILE *f = NULL; int r, c = 0; assert(prefix); assert(ifindex > 0); r = open_lldp_neighbors(ifindex, &f); if (r < 0) return r; for (;;) { const char *system_name = NULL, *port_id = NULL, *port_description = NULL; _cleanup_(sd_lldp_neighbor_unrefp) sd_lldp_neighbor *n = NULL; r = next_lldp_neighbor(f, &n); if (r < 0) return r; if (r == 0) break; printf("%*s", (int) strlen(prefix), c == 0 ? prefix : ""); (void) sd_lldp_neighbor_get_system_name(n, &system_name); (void) sd_lldp_neighbor_get_port_id_as_string(n, &port_id); (void) sd_lldp_neighbor_get_port_description(n, &port_description); printf("%s on port %s", strna(system_name), strna(port_id)); if (!isempty(port_description)) printf(" (%s)", port_description); putchar('\n'); c++; } return c; } static void dump_ifindexes(const char *prefix, const int *ifindexes) { unsigned c; assert(prefix); if (!ifindexes || ifindexes[0] <= 0) return; for (c = 0; ifindexes[c] > 0; c++) { char name[IF_NAMESIZE+1]; printf("%*s", (int) strlen(prefix), c == 0 ? prefix : ""); if (if_indextoname(ifindexes[c], name)) fputs(name, stdout); else printf("%i", ifindexes[c]); fputc('\n', stdout); } } static void dump_list(const char *prefix, char **l) { char **i; if (strv_isempty(l)) return; STRV_FOREACH(i, l) { printf("%*s%s\n", (int) strlen(prefix), i == l ? prefix : "", *i); } } static int link_status_one( sd_netlink *rtnl, sd_hwdb *hwdb, const LinkInfo *info) { _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **search_domains = NULL, **route_domains = NULL; _cleanup_free_ char *setup_state = NULL, *operational_state = NULL, *tz = NULL; _cleanup_(sd_device_unrefp) sd_device *d = NULL; char devid[2 + DECIMAL_STR_MAX(int)]; _cleanup_free_ char *t = NULL, *network = NULL; const char *driver = NULL, *path = NULL, *vendor = NULL, *model = NULL, *link = NULL; const char *on_color_operational, *off_color_operational, *on_color_setup, *off_color_setup; _cleanup_free_ int *carrier_bound_to = NULL, *carrier_bound_by = NULL; int r; assert(rtnl); assert(info); (void) sd_network_link_get_operational_state(info->ifindex, &operational_state); operational_state_to_color(operational_state, &on_color_operational, &off_color_operational); r = sd_network_link_get_setup_state(info->ifindex, &setup_state); if (r == -ENODATA) /* If there's no info available about this iface, it's unmanaged by networkd */ setup_state = strdup("unmanaged"); setup_state_to_color(setup_state, &on_color_setup, &off_color_setup); (void) sd_network_link_get_dns(info->ifindex, &dns); (void) sd_network_link_get_search_domains(info->ifindex, &search_domains); (void) sd_network_link_get_route_domains(info->ifindex, &route_domains); (void) sd_network_link_get_ntp(info->ifindex, &ntp); xsprintf(devid, "n%i", info->ifindex); (void) sd_device_new_from_device_id(&d, devid); if (d) { (void) sd_device_get_property_value(d, "ID_NET_LINK_FILE", &link); (void) sd_device_get_property_value(d, "ID_NET_DRIVER", &driver); (void) sd_device_get_property_value(d, "ID_PATH", &path); r = sd_device_get_property_value(d, "ID_VENDOR_FROM_DATABASE", &vendor); if (r < 0) (void) sd_device_get_property_value(d, "ID_VENDOR", &vendor); r = sd_device_get_property_value(d, "ID_MODEL_FROM_DATABASE", &model); if (r < 0) (void) sd_device_get_property_value(d, "ID_MODEL", &model); } t = link_get_type_string(info->iftype, d); (void) sd_network_link_get_network_file(info->ifindex, &network); (void) sd_network_link_get_carrier_bound_to(info->ifindex, &carrier_bound_to); (void) sd_network_link_get_carrier_bound_by(info->ifindex, &carrier_bound_by); printf("%s%s%s %i: %s\n", on_color_operational, special_glyph(BLACK_CIRCLE), off_color_operational, info->ifindex, info->name); printf(" Link File: %s\n" " Network File: %s\n" " Type: %s\n" " State: %s%s%s (%s%s%s)\n", strna(link), strna(network), strna(t), on_color_operational, strna(operational_state), off_color_operational, on_color_setup, strna(setup_state), off_color_setup); if (path) printf(" Path: %s\n", path); if (driver) printf(" Driver: %s\n", driver); if (vendor) printf(" Vendor: %s\n", vendor); if (model) printf(" Model: %s\n", model); if (info->has_mac_address) { _cleanup_free_ char *description = NULL; char ea[ETHER_ADDR_TO_STRING_MAX]; (void) ieee_oui(hwdb, &info->mac_address, &description); if (description) printf(" HW Address: %s (%s)\n", ether_addr_to_string(&info->mac_address, ea), description); else printf(" HW Address: %s\n", ether_addr_to_string(&info->mac_address, ea)); } if (info->has_mtu) printf(" MTU: %" PRIu32 "\n", info->mtu); (void) dump_addresses(rtnl, " Address: ", info->ifindex); (void) dump_gateways(rtnl, hwdb, " Gateway: ", info->ifindex); dump_list(" DNS: ", dns); dump_list(" Search Domains: ", search_domains); dump_list(" Route Domains: ", route_domains); dump_list(" NTP: ", ntp); dump_ifindexes("Carrier Bound To: ", carrier_bound_to); dump_ifindexes("Carrier Bound By: ", carrier_bound_by); (void) sd_network_link_get_timezone(info->ifindex, &tz); if (tz) printf(" Time Zone: %s\n", tz); (void) dump_lldp_neighbors(" Connected To: ", info->ifindex); return 0; } static int system_status(sd_netlink *rtnl, sd_hwdb *hwdb) { _cleanup_free_ char *operational_state = NULL; _cleanup_strv_free_ char **dns = NULL, **ntp = NULL, **search_domains = NULL, **route_domains = NULL; const char *on_color_operational, *off_color_operational; assert(rtnl); (void) sd_network_get_operational_state(&operational_state); operational_state_to_color(operational_state, &on_color_operational, &off_color_operational); printf("%s%s%s State: %s%s%s\n", on_color_operational, special_glyph(BLACK_CIRCLE), off_color_operational, on_color_operational, strna(operational_state), off_color_operational); (void) dump_addresses(rtnl, " Address: ", 0); (void) dump_gateways(rtnl, hwdb, " Gateway: ", 0); (void) sd_network_get_dns(&dns); dump_list(" DNS: ", dns); (void) sd_network_get_search_domains(&search_domains); dump_list("Search Domains: ", search_domains); (void) sd_network_get_route_domains(&route_domains); dump_list(" Route Domains: ", route_domains); (void) sd_network_get_ntp(&ntp); dump_list(" NTP: ", ntp); return 0; } static int link_status(int argc, char *argv[], void *userdata) { _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; _cleanup_(sd_hwdb_unrefp) sd_hwdb *hwdb = NULL; _cleanup_free_ LinkInfo *links = NULL; int r, c, i; (void) pager_open(arg_no_pager, false); r = sd_netlink_open(&rtnl); if (r < 0) return log_error_errno(r, "Failed to connect to netlink: %m"); r = sd_hwdb_new(&hwdb); if (r < 0) log_debug_errno(r, "Failed to open hardware database: %m"); if (arg_all) c = acquire_link_info_all(rtnl, &links); else if (argc <= 1) return system_status(rtnl, hwdb); else c = acquire_link_info_strv(rtnl, argv + 1, &links); if (c < 0) return c; for (i = 0; i < c; i++) { if (i > 0) fputc('\n', stdout); link_status_one(rtnl, hwdb, links + i); } return 0; } static char *lldp_capabilities_to_string(uint16_t x) { static const char characters[] = { 'o', 'p', 'b', 'w', 'r', 't', 'd', 'a', 'c', 's', 'm', }; char *ret; unsigned i; ret = new(char, ELEMENTSOF(characters) + 1); if (!ret) return NULL; for (i = 0; i < ELEMENTSOF(characters); i++) ret[i] = (x & (1U << i)) ? characters[i] : '.'; ret[i] = 0; return ret; } static void lldp_capabilities_legend(uint16_t x) { unsigned w, i, cols = columns(); static const char* const table[] = { "o - Other", "p - Repeater", "b - Bridge", "w - WLAN Access Point", "r - Router", "t - Telephone", "d - DOCSIS cable device", "a - Station", "c - Customer VLAN", "s - Service VLAN", "m - Two-port MAC Relay (TPMR)", }; if (x == 0) return; printf("\nCapability Flags:\n"); for (w = 0, i = 0; i < ELEMENTSOF(table); i++) if (x & (1U << i) || arg_all) { bool newline; newline = w + strlen(table[i]) + (w == 0 ? 0 : 2) > cols; if (newline) w = 0; w += printf("%s%s%s", newline ? "\n" : "", w == 0 ? "" : "; ", table[i]); } puts(""); } static int link_lldp_status(int argc, char *argv[], void *userdata) { _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; _cleanup_free_ LinkInfo *links = NULL; int i, r, c, m = 0; uint16_t all = 0; r = sd_netlink_open(&rtnl); if (r < 0) return log_error_errno(r, "Failed to connect to netlink: %m"); if (argc > 1) c = acquire_link_info_strv(rtnl, argv + 1, &links); else c = acquire_link_info_all(rtnl, &links); if (c < 0) return c; (void) pager_open(arg_no_pager, false); if (arg_legend) printf("%-16s %-17s %-16s %-11s %-17s %-16s\n", "LINK", "CHASSIS ID", "SYSTEM NAME", "CAPS", "PORT ID", "PORT DESCRIPTION"); for (i = 0; i < c; i++) { _cleanup_fclose_ FILE *f = NULL; r = open_lldp_neighbors(links[i].ifindex, &f); if (r == -ENOENT) continue; if (r < 0) { log_warning_errno(r, "Failed to open LLDP data for %i, ignoring: %m", links[i].ifindex); continue; } for (;;) { _cleanup_free_ char *cid = NULL, *pid = NULL, *sname = NULL, *pdesc = NULL; const char *chassis_id = NULL, *port_id = NULL, *system_name = NULL, *port_description = NULL, *capabilities = NULL; _cleanup_(sd_lldp_neighbor_unrefp) sd_lldp_neighbor *n = NULL; uint16_t cc; r = next_lldp_neighbor(f, &n); if (r < 0) { log_warning_errno(r, "Failed to read neighbor data: %m"); break; } if (r == 0) break; (void) sd_lldp_neighbor_get_chassis_id_as_string(n, &chassis_id); (void) sd_lldp_neighbor_get_port_id_as_string(n, &port_id); (void) sd_lldp_neighbor_get_system_name(n, &system_name); (void) sd_lldp_neighbor_get_port_description(n, &port_description); if (chassis_id) { cid = ellipsize(chassis_id, 17, 100); if (cid) chassis_id = cid; } if (port_id) { pid = ellipsize(port_id, 17, 100); if (pid) port_id = pid; } if (system_name) { sname = ellipsize(system_name, 16, 100); if (sname) system_name = sname; } if (port_description) { pdesc = ellipsize(port_description, 16, 100); if (pdesc) port_description = pdesc; } if (sd_lldp_neighbor_get_enabled_capabilities(n, &cc) >= 0) { capabilities = lldp_capabilities_to_string(cc); all |= cc; } printf("%-16s %-17s %-16s %-11s %-17s %-16s\n", links[i].name, strna(chassis_id), strna(system_name), strna(capabilities), strna(port_id), strna(port_description)); m++; } } if (arg_legend) { lldp_capabilities_legend(all); printf("\n%i neighbors listed.\n", m); } return 0; } static void help(void) { printf("%s [OPTIONS...]\n\n" "Query and control the networking subsystem.\n\n" " -h --help Show this help\n" " --version Show package version\n" " --no-pager Do not pipe output into a pager\n" " --no-legend Do not show the headers and footers\n" " -a --all Show status for all links\n\n" "Commands:\n" " list [LINK...] List links\n" " status [LINK...] Show link status\n" " lldp [LINK...] Show LLDP neighbors\n" " label Show current address label entries in the kernel\n" , program_invocation_short_name); } static int parse_argv(int argc, char *argv[]) { enum { ARG_VERSION = 0x100, ARG_NO_PAGER, ARG_NO_LEGEND, }; static const struct option options[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { "no-pager", no_argument, NULL, ARG_NO_PAGER }, { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, { "all", no_argument, NULL, 'a' }, {} }; int c; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "ha", options, NULL)) >= 0) { switch (c) { case 'h': help(); return 0; case ARG_VERSION: return version(); case ARG_NO_PAGER: arg_no_pager = true; break; case ARG_NO_LEGEND: arg_legend = false; break; case 'a': arg_all = true; break; case '?': return -EINVAL; default: assert_not_reached("Unhandled option"); } } return 1; } static int networkctl_main(int argc, char *argv[]) { static const Verb verbs[] = { { "list", VERB_ANY, VERB_ANY, VERB_DEFAULT, list_links }, { "status", VERB_ANY, VERB_ANY, 0, link_status }, { "lldp", VERB_ANY, VERB_ANY, 0, link_lldp_status }, { "label", VERB_ANY, VERB_ANY, 0, list_address_labels }, {} }; return dispatch_verb(argc, argv, verbs, NULL); } static void warn_networkd_missing(void) { if (access("/run/systemd/netif/state", F_OK) >= 0) return; fprintf(stderr, "WARNING: systemd-networkd is not running, output will be incomplete.\n\n"); } int main(int argc, char* argv[]) { int r; log_parse_environment(); log_open(); r = parse_argv(argc, argv); if (r <= 0) goto finish; warn_networkd_missing(); r = networkctl_main(argc, argv); finish: pager_close(); return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; }