1 /* SPDX-License-Identifier: LGPL-2.1+ */
4 #include <linux/if_addrlabel.h>
11 #include "sd-netlink.h"
12 #include "sd-network.h"
14 #include "alloc-util.h"
15 #include "arphrd-list.h"
16 #include "device-util.h"
17 #include "ether-addr-util.h"
19 #include "hwdb-util.h"
20 #include "local-addresses.h"
21 #include "locale-util.h"
23 #include "netlink-util.h"
25 #include "parse-util.h"
26 #include "socket-util.h"
27 #include "sparse-endian.h"
28 #include "stdio-util.h"
29 #include "string-table.h"
30 #include "string-util.h"
33 #include "terminal-util.h"
37 static bool arg_no_pager
= false;
38 static bool arg_legend
= true;
39 static bool arg_all
= false;
41 static char *link_get_type_string(unsigned short iftype
, sd_device
*d
) {
46 const char *devtype
= NULL
;
48 (void) sd_device_get_devtype(d
, &devtype
);
49 if (!isempty(devtype
))
50 return strdup(devtype
);
53 t
= arphrd_to_name(iftype
);
65 static void operational_state_to_color(const char *state
, const char **on
, const char **off
) {
69 if (streq_ptr(state
, "routable")) {
70 *on
= ansi_highlight_green();
72 } else if (streq_ptr(state
, "degraded")) {
73 *on
= ansi_highlight_yellow();
79 static void setup_state_to_color(const char *state
, const char **on
, const char **off
) {
83 if (streq_ptr(state
, "configured")) {
84 *on
= ansi_highlight_green();
86 } else if (streq_ptr(state
, "configuring")) {
87 *on
= ansi_highlight_yellow();
89 } else if (STRPTR_IN_SET(state
, "failed", "linger")) {
90 *on
= ansi_highlight_red();
96 typedef struct LinkInfo
{
97 char name
[IFNAMSIZ
+1];
99 unsigned short iftype
;
100 struct ether_addr mac_address
;
103 bool has_mac_address
:1;
107 static int link_info_compare(const void *a
, const void *b
) {
108 const LinkInfo
*x
= a
, *y
= b
;
110 return x
->ifindex
- y
->ifindex
;
113 static int decode_link(sd_netlink_message
*m
, LinkInfo
*info
) {
121 r
= sd_netlink_message_get_type(m
, &type
);
125 if (type
!= RTM_NEWLINK
)
128 r
= sd_rtnl_message_link_get_ifindex(m
, &info
->ifindex
);
132 r
= sd_netlink_message_read_string(m
, IFLA_IFNAME
, &name
);
136 r
= sd_rtnl_message_link_get_type(m
, &info
->iftype
);
140 strscpy(info
->name
, sizeof info
->name
, name
);
142 info
->has_mac_address
=
143 sd_netlink_message_read_ether_addr(m
, IFLA_ADDRESS
, &info
->mac_address
) >= 0 &&
144 memcmp(&info
->mac_address
, ÐER_ADDR_NULL
, sizeof(struct ether_addr
)) != 0;
147 sd_netlink_message_read_u32(m
, IFLA_MTU
, &info
->mtu
) &&
153 static int acquire_link_info_strv(sd_netlink
*rtnl
, char **l
, LinkInfo
**ret
) {
154 _cleanup_free_ LinkInfo
*links
= NULL
;
162 links
= new(LinkInfo
, strv_length(l
));
167 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
170 if (parse_ifindex(*i
, &ifindex
) >= 0)
171 r
= sd_rtnl_message_new_link(rtnl
, &req
, RTM_GETLINK
, ifindex
);
173 r
= sd_rtnl_message_new_link(rtnl
, &req
, RTM_GETLINK
, 0);
175 return rtnl_log_create_error(r
);
177 r
= sd_netlink_message_append_string(req
, IFLA_IFNAME
, *i
);
180 return rtnl_log_create_error(r
);
182 r
= sd_netlink_call(rtnl
, req
, 0, &reply
);
184 return log_error_errno(r
, "Failed to request link: %m");
186 r
= decode_link(reply
, links
+ c
);
193 qsort_safe(links
, c
, sizeof(LinkInfo
), link_info_compare
);
195 *ret
= TAKE_PTR(links
);
200 static int acquire_link_info_all(sd_netlink
*rtnl
, LinkInfo
**ret
) {
201 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
202 _cleanup_free_ LinkInfo
*links
= NULL
;
203 size_t allocated
= 0, c
= 0;
204 sd_netlink_message
*i
;
210 r
= sd_rtnl_message_new_link(rtnl
, &req
, RTM_GETLINK
, 0);
212 return rtnl_log_create_error(r
);
214 r
= sd_netlink_message_request_dump(req
, true);
216 return rtnl_log_create_error(r
);
218 r
= sd_netlink_call(rtnl
, req
, 0, &reply
);
220 return log_error_errno(r
, "Failed to enumerate links: %m");
222 for (i
= reply
; i
; i
= sd_netlink_message_next(i
)) {
223 if (!GREEDY_REALLOC(links
, allocated
, c
+1))
226 r
= decode_link(i
, links
+ c
);
233 qsort_safe(links
, c
, sizeof(LinkInfo
), link_info_compare
);
235 *ret
= TAKE_PTR(links
);
240 static int list_links(int argc
, char *argv
[], void *userdata
) {
241 _cleanup_(sd_netlink_unrefp
) sd_netlink
*rtnl
= NULL
;
242 _cleanup_free_ LinkInfo
*links
= NULL
;
245 r
= sd_netlink_open(&rtnl
);
247 return log_error_errno(r
, "Failed to connect to netlink: %m");
250 c
= acquire_link_info_strv(rtnl
, argv
+ 1, &links
);
252 c
= acquire_link_info_all(rtnl
, &links
);
256 (void) pager_open(arg_no_pager
, false);
259 printf("%3s %-16s %-18s %-11s %-10s\n",
266 for (i
= 0; i
< c
; i
++) {
267 _cleanup_free_
char *setup_state
= NULL
, *operational_state
= NULL
;
268 _cleanup_(sd_device_unrefp
) sd_device
*d
= NULL
;
269 const char *on_color_operational
, *off_color_operational
,
270 *on_color_setup
, *off_color_setup
;
271 char devid
[2 + DECIMAL_STR_MAX(int)];
272 _cleanup_free_
char *t
= NULL
;
274 (void) sd_network_link_get_operational_state(links
[i
].ifindex
, &operational_state
);
275 operational_state_to_color(operational_state
, &on_color_operational
, &off_color_operational
);
277 r
= sd_network_link_get_setup_state(links
[i
].ifindex
, &setup_state
);
278 if (r
== -ENODATA
) /* If there's no info available about this iface, it's unmanaged by networkd */
279 setup_state
= strdup("unmanaged");
280 setup_state_to_color(setup_state
, &on_color_setup
, &off_color_setup
);
282 xsprintf(devid
, "n%i", links
[i
].ifindex
);
283 (void) sd_device_new_from_device_id(&d
, devid
);
285 t
= link_get_type_string(links
[i
].iftype
, d
);
287 printf("%3i %-16s %-18s %s%-11s%s %s%-10s%s\n",
288 links
[i
].ifindex
, links
[i
].name
, strna(t
),
289 on_color_operational
, strna(operational_state
), off_color_operational
,
290 on_color_setup
, strna(setup_state
), off_color_setup
);
294 printf("\n%i links listed.\n", c
);
299 /* IEEE Organizationally Unique Identifier vendor string */
300 static int ieee_oui(sd_hwdb
*hwdb
, const struct ether_addr
*mac
, char **ret
) {
301 const char *description
;
302 char modalias
[STRLEN("OUI:XXYYXXYYXXYY") + 1], *desc
;
313 /* skip commonly misused 00:00:00 (Xerox) prefix */
314 if (memcmp(mac
, "\0\0\0", 3) == 0)
317 xsprintf(modalias
, "OUI:" ETHER_ADDR_FORMAT_STR
,
318 ETHER_ADDR_FORMAT_VAL(*mac
));
320 r
= sd_hwdb_get(hwdb
, modalias
, "ID_OUI_FROM_DATABASE", &description
);
324 desc
= strdup(description
);
333 static int get_gateway_description(
338 union in_addr_union
*gateway
,
339 char **gateway_description
) {
340 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
341 sd_netlink_message
*m
;
345 assert(ifindex
>= 0);
346 assert(IN_SET(family
, AF_INET
, AF_INET6
));
348 assert(gateway_description
);
350 r
= sd_rtnl_message_new_neigh(rtnl
, &req
, RTM_GETNEIGH
, ifindex
, family
);
354 r
= sd_netlink_message_request_dump(req
, true);
358 r
= sd_netlink_call(rtnl
, req
, 0, &reply
);
362 for (m
= reply
; m
; m
= sd_netlink_message_next(m
)) {
363 union in_addr_union gw
= {};
364 struct ether_addr mac
= {};
368 r
= sd_netlink_message_get_errno(m
);
370 log_error_errno(r
, "got error: %m");
374 r
= sd_netlink_message_get_type(m
, &type
);
376 log_error_errno(r
, "could not get type: %m");
380 if (type
!= RTM_NEWNEIGH
) {
381 log_error("type is not RTM_NEWNEIGH");
385 r
= sd_rtnl_message_neigh_get_family(m
, &fam
);
387 log_error_errno(r
, "could not get family: %m");
392 log_error("family is not correct");
396 r
= sd_rtnl_message_neigh_get_ifindex(m
, &ifi
);
398 log_error_errno(r
, "could not get ifindex: %m");
402 if (ifindex
> 0 && ifi
!= ifindex
)
407 r
= sd_netlink_message_read_in_addr(m
, NDA_DST
, &gw
.in
);
413 r
= sd_netlink_message_read_in6_addr(m
, NDA_DST
, &gw
.in6
);
422 if (!in_addr_equal(fam
, &gw
, gateway
))
425 r
= sd_netlink_message_read_ether_addr(m
, NDA_LLADDR
, &mac
);
429 r
= ieee_oui(hwdb
, &mac
, gateway_description
);
439 static int dump_gateways(
444 _cleanup_free_
struct local_address
*local
= NULL
;
450 n
= local_gateways(rtnl
, ifindex
, AF_UNSPEC
, &local
);
454 for (i
= 0; i
< n
; i
++) {
455 _cleanup_free_
char *gateway
= NULL
, *description
= NULL
;
457 r
= in_addr_to_string(local
[i
].family
, &local
[i
].address
, &gateway
);
461 r
= get_gateway_description(rtnl
, hwdb
, local
[i
].ifindex
, local
[i
].family
, &local
[i
].address
, &description
);
463 log_debug_errno(r
, "Could not get description of gateway: %m");
466 (int) strlen(prefix
),
467 i
== 0 ? prefix
: "",
471 printf(" (%s)", description
);
473 /* Show interface name for the entry if we show
474 * entries for all interfaces */
476 char name
[IF_NAMESIZE
+1];
478 if (if_indextoname(local
[i
].ifindex
, name
)) {
479 fputs(" on ", stdout
);
482 printf(" on %%%i", local
[i
].ifindex
);
491 static int dump_addresses(
496 _cleanup_free_
struct local_address
*local
= NULL
;
502 n
= local_addresses(rtnl
, ifindex
, AF_UNSPEC
, &local
);
506 for (i
= 0; i
< n
; i
++) {
507 _cleanup_free_
char *pretty
= NULL
;
509 r
= in_addr_to_string(local
[i
].family
, &local
[i
].address
, &pretty
);
514 (int) strlen(prefix
),
515 i
== 0 ? prefix
: "",
519 char name
[IF_NAMESIZE
+1];
521 if (if_indextoname(local
[i
].ifindex
, name
)) {
522 fputs(" on ", stdout
);
525 printf(" on %%%i", local
[i
].ifindex
);
534 static int dump_address_labels(sd_netlink
*rtnl
) {
535 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*req
= NULL
, *reply
= NULL
;
536 sd_netlink_message
*m
;
541 r
= sd_rtnl_message_new_addrlabel(rtnl
, &req
, RTM_GETADDRLABEL
, 0, AF_INET6
);
543 return log_error_errno(r
, "Could not allocate RTM_GETADDRLABEL message: %m");
545 r
= sd_netlink_message_request_dump(req
, true);
549 r
= sd_netlink_call(rtnl
, req
, 0, &reply
);
553 printf("%10s/%s %30s\n", "Prefix", "Prefixlen", "Label");
555 for (m
= reply
; m
; m
= sd_netlink_message_next(m
)) {
556 _cleanup_free_
char *pretty
= NULL
;
557 union in_addr_union prefix
= {};
561 r
= sd_netlink_message_get_errno(m
);
563 log_error_errno(r
, "got error: %m");
567 r
= sd_netlink_message_read_u32(m
, IFAL_LABEL
, &label
);
568 if (r
< 0 && r
!= -ENODATA
) {
569 log_error_errno(r
, "Could not read IFAL_LABEL, ignoring: %m");
573 r
= sd_netlink_message_read_in6_addr(m
, IFAL_ADDRESS
, &prefix
.in6
);
577 r
= in_addr_to_string(AF_INET6
, &prefix
, &pretty
);
581 r
= sd_rtnl_message_addrlabel_get_prefixlen(m
, &prefixlen
);
585 printf("%10s/%-5u %30u\n", pretty
, prefixlen
, label
);
591 static int list_address_labels(int argc
, char *argv
[], void *userdata
) {
592 _cleanup_(sd_netlink_unrefp
) sd_netlink
*rtnl
= NULL
;
595 r
= sd_netlink_open(&rtnl
);
597 return log_error_errno(r
, "Failed to connect to netlink: %m");
599 dump_address_labels(rtnl
);
604 static int open_lldp_neighbors(int ifindex
, FILE **ret
) {
605 _cleanup_free_
char *p
= NULL
;
608 if (asprintf(&p
, "/run/systemd/netif/lldp/%i", ifindex
) < 0)
619 static int next_lldp_neighbor(FILE *f
, sd_lldp_neighbor
**ret
) {
620 _cleanup_free_
void *raw
= NULL
;
628 l
= fread(&u
, 1, sizeof(u
), f
);
629 if (l
== 0 && feof(f
))
634 /* each LLDP packet is at most MTU size, but let's allow up to 4KiB just in case */
635 if (le64toh(u
) >= 4096)
638 raw
= new(uint8_t, le64toh(u
));
642 if (fread(raw
, 1, le64toh(u
), f
) != le64toh(u
))
645 r
= sd_lldp_neighbor_from_raw(ret
, raw
, le64toh(u
));
652 static int dump_lldp_neighbors(const char *prefix
, int ifindex
) {
653 _cleanup_fclose_
FILE *f
= NULL
;
659 r
= open_lldp_neighbors(ifindex
, &f
);
664 const char *system_name
= NULL
, *port_id
= NULL
, *port_description
= NULL
;
665 _cleanup_(sd_lldp_neighbor_unrefp
) sd_lldp_neighbor
*n
= NULL
;
667 r
= next_lldp_neighbor(f
, &n
);
674 (int) strlen(prefix
),
675 c
== 0 ? prefix
: "");
677 (void) sd_lldp_neighbor_get_system_name(n
, &system_name
);
678 (void) sd_lldp_neighbor_get_port_id_as_string(n
, &port_id
);
679 (void) sd_lldp_neighbor_get_port_description(n
, &port_description
);
681 printf("%s on port %s", strna(system_name
), strna(port_id
));
683 if (!isempty(port_description
))
684 printf(" (%s)", port_description
);
694 static void dump_ifindexes(const char *prefix
, const int *ifindexes
) {
699 if (!ifindexes
|| ifindexes
[0] <= 0)
702 for (c
= 0; ifindexes
[c
] > 0; c
++) {
703 char name
[IF_NAMESIZE
+1];
706 (int) strlen(prefix
),
707 c
== 0 ? prefix
: "");
709 if (if_indextoname(ifindexes
[c
], name
))
712 printf("%i", ifindexes
[c
]);
718 static void dump_list(const char *prefix
, char **l
) {
726 (int) strlen(prefix
),
727 i
== l
? prefix
: "",
732 static int link_status_one(
735 const LinkInfo
*info
) {
737 _cleanup_strv_free_
char **dns
= NULL
, **ntp
= NULL
, **search_domains
= NULL
, **route_domains
= NULL
;
738 _cleanup_free_
char *setup_state
= NULL
, *operational_state
= NULL
, *tz
= NULL
;
739 _cleanup_(sd_device_unrefp
) sd_device
*d
= NULL
;
740 char devid
[2 + DECIMAL_STR_MAX(int)];
741 _cleanup_free_
char *t
= NULL
, *network
= NULL
;
742 const char *driver
= NULL
, *path
= NULL
, *vendor
= NULL
, *model
= NULL
, *link
= NULL
;
743 const char *on_color_operational
, *off_color_operational
,
744 *on_color_setup
, *off_color_setup
;
745 _cleanup_free_
int *carrier_bound_to
= NULL
, *carrier_bound_by
= NULL
;
751 (void) sd_network_link_get_operational_state(info
->ifindex
, &operational_state
);
752 operational_state_to_color(operational_state
, &on_color_operational
, &off_color_operational
);
754 r
= sd_network_link_get_setup_state(info
->ifindex
, &setup_state
);
755 if (r
== -ENODATA
) /* If there's no info available about this iface, it's unmanaged by networkd */
756 setup_state
= strdup("unmanaged");
757 setup_state_to_color(setup_state
, &on_color_setup
, &off_color_setup
);
759 (void) sd_network_link_get_dns(info
->ifindex
, &dns
);
760 (void) sd_network_link_get_search_domains(info
->ifindex
, &search_domains
);
761 (void) sd_network_link_get_route_domains(info
->ifindex
, &route_domains
);
762 (void) sd_network_link_get_ntp(info
->ifindex
, &ntp
);
764 xsprintf(devid
, "n%i", info
->ifindex
);
766 (void) sd_device_new_from_device_id(&d
, devid
);
769 (void) sd_device_get_property_value(d
, "ID_NET_LINK_FILE", &link
);
770 (void) sd_device_get_property_value(d
, "ID_NET_DRIVER", &driver
);
771 (void) sd_device_get_property_value(d
, "ID_PATH", &path
);
773 r
= sd_device_get_property_value(d
, "ID_VENDOR_FROM_DATABASE", &vendor
);
775 (void) sd_device_get_property_value(d
, "ID_VENDOR", &vendor
);
777 r
= sd_device_get_property_value(d
, "ID_MODEL_FROM_DATABASE", &model
);
779 (void) sd_device_get_property_value(d
, "ID_MODEL", &model
);
782 t
= link_get_type_string(info
->iftype
, d
);
784 (void) sd_network_link_get_network_file(info
->ifindex
, &network
);
786 (void) sd_network_link_get_carrier_bound_to(info
->ifindex
, &carrier_bound_to
);
787 (void) sd_network_link_get_carrier_bound_by(info
->ifindex
, &carrier_bound_by
);
789 printf("%s%s%s %i: %s\n", on_color_operational
, special_glyph(BLACK_CIRCLE
), off_color_operational
, info
->ifindex
, info
->name
);
791 printf(" Link File: %s\n"
792 " Network File: %s\n"
794 " State: %s%s%s (%s%s%s)\n",
798 on_color_operational
, strna(operational_state
), off_color_operational
,
799 on_color_setup
, strna(setup_state
), off_color_setup
);
802 printf(" Path: %s\n", path
);
804 printf(" Driver: %s\n", driver
);
806 printf(" Vendor: %s\n", vendor
);
808 printf(" Model: %s\n", model
);
810 if (info
->has_mac_address
) {
811 _cleanup_free_
char *description
= NULL
;
812 char ea
[ETHER_ADDR_TO_STRING_MAX
];
814 (void) ieee_oui(hwdb
, &info
->mac_address
, &description
);
817 printf(" HW Address: %s (%s)\n", ether_addr_to_string(&info
->mac_address
, ea
), description
);
819 printf(" HW Address: %s\n", ether_addr_to_string(&info
->mac_address
, ea
));
823 printf(" MTU: %" PRIu32
"\n", info
->mtu
);
825 (void) dump_addresses(rtnl
, " Address: ", info
->ifindex
);
826 (void) dump_gateways(rtnl
, hwdb
, " Gateway: ", info
->ifindex
);
828 dump_list(" DNS: ", dns
);
829 dump_list(" Search Domains: ", search_domains
);
830 dump_list(" Route Domains: ", route_domains
);
832 dump_list(" NTP: ", ntp
);
834 dump_ifindexes("Carrier Bound To: ", carrier_bound_to
);
835 dump_ifindexes("Carrier Bound By: ", carrier_bound_by
);
837 (void) sd_network_link_get_timezone(info
->ifindex
, &tz
);
839 printf(" Time Zone: %s\n", tz
);
841 (void) dump_lldp_neighbors(" Connected To: ", info
->ifindex
);
846 static int system_status(sd_netlink
*rtnl
, sd_hwdb
*hwdb
) {
847 _cleanup_free_
char *operational_state
= NULL
;
848 _cleanup_strv_free_
char **dns
= NULL
, **ntp
= NULL
, **search_domains
= NULL
, **route_domains
= NULL
;
849 const char *on_color_operational
, *off_color_operational
;
853 (void) sd_network_get_operational_state(&operational_state
);
854 operational_state_to_color(operational_state
, &on_color_operational
, &off_color_operational
);
856 printf("%s%s%s State: %s%s%s\n",
857 on_color_operational
, special_glyph(BLACK_CIRCLE
), off_color_operational
,
858 on_color_operational
, strna(operational_state
), off_color_operational
);
860 (void) dump_addresses(rtnl
, " Address: ", 0);
861 (void) dump_gateways(rtnl
, hwdb
, " Gateway: ", 0);
863 (void) sd_network_get_dns(&dns
);
864 dump_list(" DNS: ", dns
);
866 (void) sd_network_get_search_domains(&search_domains
);
867 dump_list("Search Domains: ", search_domains
);
869 (void) sd_network_get_route_domains(&route_domains
);
870 dump_list(" Route Domains: ", route_domains
);
872 (void) sd_network_get_ntp(&ntp
);
873 dump_list(" NTP: ", ntp
);
878 static int link_status(int argc
, char *argv
[], void *userdata
) {
879 _cleanup_(sd_netlink_unrefp
) sd_netlink
*rtnl
= NULL
;
880 _cleanup_(sd_hwdb_unrefp
) sd_hwdb
*hwdb
= NULL
;
881 _cleanup_free_ LinkInfo
*links
= NULL
;
884 (void) pager_open(arg_no_pager
, false);
886 r
= sd_netlink_open(&rtnl
);
888 return log_error_errno(r
, "Failed to connect to netlink: %m");
890 r
= sd_hwdb_new(&hwdb
);
892 log_debug_errno(r
, "Failed to open hardware database: %m");
895 c
= acquire_link_info_all(rtnl
, &links
);
897 return system_status(rtnl
, hwdb
);
899 c
= acquire_link_info_strv(rtnl
, argv
+ 1, &links
);
903 for (i
= 0; i
< c
; i
++) {
907 link_status_one(rtnl
, hwdb
, links
+ i
);
913 static char *lldp_capabilities_to_string(uint16_t x
) {
914 static const char characters
[] = {
915 'o', 'p', 'b', 'w', 'r', 't', 'd', 'a', 'c', 's', 'm',
920 ret
= new(char, ELEMENTSOF(characters
) + 1);
924 for (i
= 0; i
< ELEMENTSOF(characters
); i
++)
925 ret
[i
] = (x
& (1U << i
)) ? characters
[i
] : '.';
931 static void lldp_capabilities_legend(uint16_t x
) {
932 unsigned w
, i
, cols
= columns();
933 static const char* const table
[] = {
937 "w - WLAN Access Point",
940 "d - DOCSIS cable device",
944 "m - Two-port MAC Relay (TPMR)",
950 printf("\nCapability Flags:\n");
951 for (w
= 0, i
= 0; i
< ELEMENTSOF(table
); i
++)
952 if (x
& (1U << i
) || arg_all
) {
955 newline
= w
+ strlen(table
[i
]) + (w
== 0 ? 0 : 2) > cols
;
958 w
+= printf("%s%s%s", newline
? "\n" : "", w
== 0 ? "" : "; ", table
[i
]);
963 static int link_lldp_status(int argc
, char *argv
[], void *userdata
) {
964 _cleanup_(sd_netlink_unrefp
) sd_netlink
*rtnl
= NULL
;
965 _cleanup_free_ LinkInfo
*links
= NULL
;
969 r
= sd_netlink_open(&rtnl
);
971 return log_error_errno(r
, "Failed to connect to netlink: %m");
974 c
= acquire_link_info_strv(rtnl
, argv
+ 1, &links
);
976 c
= acquire_link_info_all(rtnl
, &links
);
980 (void) pager_open(arg_no_pager
, false);
983 printf("%-16s %-17s %-16s %-11s %-17s %-16s\n",
991 for (i
= 0; i
< c
; i
++) {
992 _cleanup_fclose_
FILE *f
= NULL
;
994 r
= open_lldp_neighbors(links
[i
].ifindex
, &f
);
998 log_warning_errno(r
, "Failed to open LLDP data for %i, ignoring: %m", links
[i
].ifindex
);
1003 _cleanup_free_
char *cid
= NULL
, *pid
= NULL
, *sname
= NULL
, *pdesc
= NULL
;
1004 const char *chassis_id
= NULL
, *port_id
= NULL
, *system_name
= NULL
, *port_description
= NULL
, *capabilities
= NULL
;
1005 _cleanup_(sd_lldp_neighbor_unrefp
) sd_lldp_neighbor
*n
= NULL
;
1008 r
= next_lldp_neighbor(f
, &n
);
1010 log_warning_errno(r
, "Failed to read neighbor data: %m");
1016 (void) sd_lldp_neighbor_get_chassis_id_as_string(n
, &chassis_id
);
1017 (void) sd_lldp_neighbor_get_port_id_as_string(n
, &port_id
);
1018 (void) sd_lldp_neighbor_get_system_name(n
, &system_name
);
1019 (void) sd_lldp_neighbor_get_port_description(n
, &port_description
);
1022 cid
= ellipsize(chassis_id
, 17, 100);
1028 pid
= ellipsize(port_id
, 17, 100);
1034 sname
= ellipsize(system_name
, 16, 100);
1036 system_name
= sname
;
1039 if (port_description
) {
1040 pdesc
= ellipsize(port_description
, 16, 100);
1042 port_description
= pdesc
;
1045 if (sd_lldp_neighbor_get_enabled_capabilities(n
, &cc
) >= 0) {
1046 capabilities
= lldp_capabilities_to_string(cc
);
1050 printf("%-16s %-17s %-16s %-11s %-17s %-16s\n",
1054 strna(capabilities
),
1056 strna(port_description
));
1063 lldp_capabilities_legend(all
);
1064 printf("\n%i neighbors listed.\n", m
);
1070 static int help(void) {
1071 _cleanup_free_
char *link
= NULL
;
1074 r
= terminal_urlify_man("networkctl", "1", &link
);
1078 printf("%s [OPTIONS...]\n\n"
1079 "Query and control the networking subsystem.\n\n"
1080 " -h --help Show this help\n"
1081 " --version Show package version\n"
1082 " --no-pager Do not pipe output into a pager\n"
1083 " --no-legend Do not show the headers and footers\n"
1084 " -a --all Show status for all links\n\n"
1086 " list [LINK...] List links\n"
1087 " status [LINK...] Show link status\n"
1088 " lldp [LINK...] Show LLDP neighbors\n"
1089 " label Show current address label entries in the kernel\n"
1090 "\nSee the %s for details.\n"
1091 , program_invocation_short_name
1098 static int parse_argv(int argc
, char *argv
[]) {
1101 ARG_VERSION
= 0x100,
1106 static const struct option options
[] = {
1107 { "help", no_argument
, NULL
, 'h' },
1108 { "version", no_argument
, NULL
, ARG_VERSION
},
1109 { "no-pager", no_argument
, NULL
, ARG_NO_PAGER
},
1110 { "no-legend", no_argument
, NULL
, ARG_NO_LEGEND
},
1111 { "all", no_argument
, NULL
, 'a' },
1120 while ((c
= getopt_long(argc
, argv
, "ha", options
, NULL
)) >= 0) {
1131 arg_no_pager
= true;
1146 assert_not_reached("Unhandled option");
1153 static int networkctl_main(int argc
, char *argv
[]) {
1154 static const Verb verbs
[] = {
1155 { "list", VERB_ANY
, VERB_ANY
, VERB_DEFAULT
, list_links
},
1156 { "status", VERB_ANY
, VERB_ANY
, 0, link_status
},
1157 { "lldp", VERB_ANY
, VERB_ANY
, 0, link_lldp_status
},
1158 { "label", VERB_ANY
, VERB_ANY
, 0, list_address_labels
},
1162 return dispatch_verb(argc
, argv
, verbs
, NULL
);
1165 static void warn_networkd_missing(void) {
1167 if (access("/run/systemd/netif/state", F_OK
) >= 0)
1170 fprintf(stderr
, "WARNING: systemd-networkd is not running, output will be incomplete.\n\n");
1173 int main(int argc
, char* argv
[]) {
1176 log_parse_environment();
1179 r
= parse_argv(argc
, argv
);
1183 warn_networkd_missing();
1185 r
= networkctl_main(argc
, argv
);
1190 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;