]>
Commit | Line | Data |
---|---|---|
aba5acdf SH |
1 | /* |
2 | * ip.c "ip" utility frontend. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
aba5acdf SH |
10 | */ |
11 | ||
12 | #include <stdio.h> | |
13 | #include <stdlib.h> | |
14 | #include <unistd.h> | |
aba5acdf SH |
15 | #include <fcntl.h> |
16 | #include <sys/socket.h> | |
17 | #include <netinet/in.h> | |
18 | #include <string.h> | |
351efcde | 19 | #include <errno.h> |
aba5acdf SH |
20 | |
21 | #include "SNAPSHOT.h" | |
22 | #include "utils.h" | |
23 | #include "ip_common.h" | |
52700d40 | 24 | #include "namespace.h" |
d7bd2db5 | 25 | #include "color.h" |
aba5acdf SH |
26 | |
27 | int preferred_family = AF_UNSPEC; | |
ec7aff5c SH |
28 | int human_readable; |
29 | int use_iec; | |
30 | int show_stats; | |
31 | int show_details; | |
ec7aff5c | 32 | int oneline; |
5d295bb8 | 33 | int brief; |
5df60772 | 34 | int json; |
ec7aff5c | 35 | int timestamp; |
ec7aff5c | 36 | int force; |
64c79560 | 37 | int max_flush_loops = 10; |
ec7aff5c SH |
38 | int batch_mode; |
39 | bool do_all; | |
64c79560 | 40 | |
3bfa73ff | 41 | struct rtnl_handle rth = { .fd = -1 }; |
aba5acdf SH |
42 | |
43 | static void usage(void) __attribute__((noreturn)); | |
44 | ||
45 | static void usage(void) | |
46 | { | |
47 | fprintf(stderr, | |
48 | "Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n" | |
10494d27 | 49 | " ip [ -force ] -batch filename\n" |
7a53aa59 | 50 | "where OBJECT := { link | address | addrlabel | route | rule | neigh | ntable |\n" |
142434dc | 51 | " tunnel | tuntap | maddress | mroute | mrule | monitor | xfrm |\n" |
1949f82c | 52 | " netns | l2tp | fou | macsec | tcp_metrics | token | netconf | ila |\n" |
93863328 | 53 | " vrf | sr }\n" |
1d934839 | 54 | " OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |\n" |
bff0f252 | 55 | " -h[uman-readable] | -iec | -j[son] | -p[retty] |\n" |
738aebe5 | 56 | " -f[amily] { inet | inet6 | mpls | bridge | link } |\n" |
644b9c23 | 57 | " -4 | -6 | -I | -D | -M | -B | -0 |\n" |
5d295bb8 | 58 | " -l[oops] { maximum-addr-flush-attempts } | -br[ief] |\n" |
a925535c | 59 | " -o[neline] | -t[imestamp] | -ts[hort] | -b[atch] [filename] |\n" |
bff0f252 | 60 | " -rc[vbuf] [size] | -n[etns] name | -a[ll] | -c[olor]}\n"); |
aba5acdf SH |
61 | exit(-1); |
62 | } | |
63 | ||
fc57a9df SH |
64 | static int do_help(int argc, char **argv) |
65 | { | |
66 | usage(); | |
ec7aff5c | 67 | return 0; |
fc57a9df SH |
68 | } |
69 | ||
351efcde SH |
70 | static const struct cmd { |
71 | const char *cmd; | |
72 | int (*func)(int argc, char **argv); | |
73 | } cmds[] = { | |
4806867a | 74 | { "address", do_ipaddr }, |
4759758c | 75 | { "addrlabel", do_ipaddrlabel }, |
ede72396 | 76 | { "maddress", do_multiaddr }, |
351efcde SH |
77 | { "route", do_iproute }, |
78 | { "rule", do_iprule }, | |
ede72396 SH |
79 | { "neighbor", do_ipneigh }, |
80 | { "neighbour", do_ipneigh }, | |
09954dc6 SH |
81 | { "ntable", do_ipntable }, |
82 | { "ntbl", do_ipntable }, | |
351efcde | 83 | { "link", do_iplink }, |
5aa08f6b | 84 | { "l2tp", do_ipl2tp }, |
6928747b | 85 | { "fou", do_ipfou }, |
ec71cae0 | 86 | { "ila", do_ipila }, |
b26fc590 | 87 | { "macsec", do_ipmacsec }, |
351efcde | 88 | { "tunnel", do_iptunnel }, |
ede72396 | 89 | { "tunl", do_iptunnel }, |
580fbd88 DW |
90 | { "tuntap", do_iptuntap }, |
91 | { "tap", do_iptuntap }, | |
191b60bd | 92 | { "token", do_iptoken }, |
ea63a69b | 93 | { "tcpmetrics", do_tcp_metrics }, |
ec7aff5c | 94 | { "tcp_metrics", do_tcp_metrics }, |
351efcde SH |
95 | { "monitor", do_ipmonitor }, |
96 | { "xfrm", do_xfrm }, | |
84616f83 | 97 | { "mroute", do_multiroute }, |
b6c8e808 | 98 | { "mrule", do_multirule }, |
0dc34c77 | 99 | { "netns", do_netns }, |
9d0efc10 | 100 | { "netconf", do_ipnetconf }, |
1949f82c | 101 | { "vrf", do_ipvrf}, |
93863328 | 102 | { "sr", do_seg6 }, |
fc57a9df | 103 | { "help", do_help }, |
351efcde SH |
104 | { 0 } |
105 | }; | |
106 | ||
107 | static int do_cmd(const char *argv0, int argc, char **argv) | |
108 | { | |
e25d6970 | 109 | const struct cmd *c; |
351efcde | 110 | |
ede72396 | 111 | for (c = cmds; c->cmd; ++c) { |
ec7aff5c | 112 | if (matches(argv0, c->cmd) == 0) |
7397944d | 113 | return -(c->func(argc-1, argv+1)); |
ede72396 SH |
114 | } |
115 | ||
351efcde | 116 | fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv0); |
7397944d | 117 | return EXIT_FAILURE; |
351efcde SH |
118 | } |
119 | ||
120 | static int batch(const char *name) | |
121 | { | |
122 | char *line = NULL; | |
123 | size_t len = 0; | |
7397944d | 124 | int ret = EXIT_SUCCESS; |
531d5da4 | 125 | int orig_family = preferred_family; |
351efcde | 126 | |
a3aa47a5 SH |
127 | batch_mode = 1; |
128 | ||
351efcde SH |
129 | if (name && strcmp(name, "-") != 0) { |
130 | if (freopen(name, "r", stdin) == NULL) { | |
ec7aff5c SH |
131 | fprintf(stderr, |
132 | "Cannot open file \"%s\" for reading: %s\n", | |
351efcde | 133 | name, strerror(errno)); |
7397944d | 134 | return EXIT_FAILURE; |
351efcde SH |
135 | } |
136 | } | |
137 | ||
138 | if (rtnl_open(&rth, 0) < 0) { | |
139 | fprintf(stderr, "Cannot open rtnetlink\n"); | |
7397944d | 140 | return EXIT_FAILURE; |
351efcde SH |
141 | } |
142 | ||
3e4f6a38 | 143 | cmdlineno = 0; |
351efcde SH |
144 | while (getcmdline(&line, &len, stdin) != -1) { |
145 | char *largv[100]; | |
146 | int largc; | |
147 | ||
531d5da4 AP |
148 | preferred_family = orig_family; |
149 | ||
351efcde SH |
150 | largc = makeargs(line, largv, 100); |
151 | if (largc == 0) | |
152 | continue; /* blank line */ | |
153 | ||
154 | if (do_cmd(largv[0], largc, largv)) { | |
ec7aff5c SH |
155 | fprintf(stderr, "Command failed %s:%d\n", |
156 | name, cmdlineno); | |
7397944d | 157 | ret = EXIT_FAILURE; |
351efcde SH |
158 | if (!force) |
159 | break; | |
160 | } | |
161 | } | |
8ed63ab1 SH |
162 | if (line) |
163 | free(line); | |
351efcde SH |
164 | |
165 | rtnl_close(&rth); | |
166 | return ret; | |
167 | } | |
168 | ||
169 | ||
aba5acdf SH |
170 | int main(int argc, char **argv) |
171 | { | |
172 | char *basename; | |
a3aa47a5 | 173 | char *batch_file = NULL; |
1ca4341d | 174 | int color = 0; |
aba5acdf | 175 | |
ba2fc55b LB |
176 | /* to run vrf exec without root, capabilities might be set, drop them |
177 | * if not needed as the first thing. | |
178 | * execv will drop them for the child command. | |
179 | * vrf exec requires: | |
180 | * - cap_dac_override to create the cgroup subdir in /sys | |
181 | * - cap_sys_admin to load the BPF program | |
182 | * - cap_net_admin to set the socket into the cgroup | |
183 | */ | |
184 | if (argc < 3 || strcmp(argv[1], "vrf") != 0 || | |
185 | strcmp(argv[2], "exec") != 0) | |
186 | drop_cap(); | |
187 | ||
aba5acdf SH |
188 | basename = strrchr(argv[0], '/'); |
189 | if (basename == NULL) | |
190 | basename = argv[0]; | |
191 | else | |
192 | basename++; | |
ae665a52 | 193 | |
aba5acdf SH |
194 | while (argc > 1) { |
195 | char *opt = argv[1]; | |
ec7aff5c SH |
196 | |
197 | if (strcmp(opt, "--") == 0) { | |
aba5acdf SH |
198 | argc--; argv++; |
199 | break; | |
200 | } | |
201 | if (opt[0] != '-') | |
202 | break; | |
203 | if (opt[1] == '-') | |
204 | opt++; | |
64c79560 BG |
205 | if (matches(opt, "-loops") == 0) { |
206 | argc--; | |
207 | argv++; | |
208 | if (argc <= 1) | |
209 | usage(); | |
ec7aff5c SH |
210 | max_flush_loops = atoi(argv[1]); |
211 | } else if (matches(opt, "-family") == 0) { | |
aba5acdf SH |
212 | argc--; |
213 | argv++; | |
214 | if (argc <= 1) | |
215 | usage(); | |
45c90d19 | 216 | if (strcmp(argv[1], "help") == 0) |
aba5acdf SH |
217 | usage(); |
218 | else | |
45c90d19 EB |
219 | preferred_family = read_family(argv[1]); |
220 | if (preferred_family == AF_UNSPEC) | |
f1675d61 | 221 | invarg("invalid protocol family", argv[1]); |
aba5acdf SH |
222 | } else if (strcmp(opt, "-4") == 0) { |
223 | preferred_family = AF_INET; | |
224 | } else if (strcmp(opt, "-6") == 0) { | |
225 | preferred_family = AF_INET6; | |
226 | } else if (strcmp(opt, "-0") == 0) { | |
227 | preferred_family = AF_PACKET; | |
aba5acdf SH |
228 | } else if (strcmp(opt, "-D") == 0) { |
229 | preferred_family = AF_DECnet; | |
dacc5d41 EB |
230 | } else if (strcmp(opt, "-M") == 0) { |
231 | preferred_family = AF_MPLS; | |
27bca615 SH |
232 | } else if (strcmp(opt, "-B") == 0) { |
233 | preferred_family = AF_BRIDGE; | |
b68d9837 CH |
234 | } else if (matches(opt, "-human") == 0 || |
235 | matches(opt, "-human-readable") == 0) { | |
236 | ++human_readable; | |
1e264abc SH |
237 | } else if (matches(opt, "-iec") == 0) { |
238 | ++use_iec; | |
aba5acdf SH |
239 | } else if (matches(opt, "-stats") == 0 || |
240 | matches(opt, "-statistics") == 0) { | |
241 | ++show_stats; | |
1d934839 PM |
242 | } else if (matches(opt, "-details") == 0) { |
243 | ++show_details; | |
aba5acdf SH |
244 | } else if (matches(opt, "-resolve") == 0) { |
245 | ++resolve_hosts; | |
246 | } else if (matches(opt, "-oneline") == 0) { | |
247 | ++oneline; | |
90f93024 SH |
248 | } else if (matches(opt, "-timestamp") == 0) { |
249 | ++timestamp; | |
79aa79d0 VK |
250 | } else if (matches(opt, "-tshort") == 0) { |
251 | ++timestamp; | |
252 | ++timestamp_short; | |
aba5acdf SH |
253 | } else if (matches(opt, "-Version") == 0) { |
254 | printf("ip utility, iproute2-ss%s\n", SNAPSHOT); | |
255 | exit(0); | |
351efcde SH |
256 | } else if (matches(opt, "-force") == 0) { |
257 | ++force; | |
258 | } else if (matches(opt, "-batch") == 0) { | |
259 | argc--; | |
260 | argv++; | |
261 | if (argc <= 1) | |
262 | usage(); | |
263 | batch_file = argv[1]; | |
5d295bb8 AG |
264 | } else if (matches(opt, "-brief") == 0) { |
265 | ++brief; | |
5df60772 JF |
266 | } else if (matches(opt, "-json") == 0) { |
267 | ++json; | |
a233caa0 | 268 | } else if (matches(opt, "-pretty") == 0) { |
54336567 | 269 | ++pretty; |
7f03191f PM |
270 | } else if (matches(opt, "-rcvbuf") == 0) { |
271 | unsigned int size; | |
272 | ||
273 | argc--; | |
274 | argv++; | |
275 | if (argc <= 1) | |
276 | usage(); | |
277 | if (get_unsigned(&size, argv[1], 0)) { | |
278 | fprintf(stderr, "Invalid rcvbuf size '%s'\n", | |
279 | argv[1]); | |
280 | exit(-1); | |
281 | } | |
282 | rcvbuf = size; | |
ff1ab8ed | 283 | } else if (matches_color(opt, &color)) { |
aba5acdf SH |
284 | } else if (matches(opt, "-help") == 0) { |
285 | usage(); | |
52700d40 VK |
286 | } else if (matches(opt, "-netns") == 0) { |
287 | NEXT_ARG(); | |
288 | if (netns_switch(argv[1])) | |
289 | exit(-1); | |
b13ba03f VK |
290 | } else if (matches(opt, "-all") == 0) { |
291 | do_all = true; | |
aba5acdf | 292 | } else { |
ec7aff5c SH |
293 | fprintf(stderr, |
294 | "Option \"%s\" is unknown, try \"ip -help\".\n", | |
295 | opt); | |
aba5acdf SH |
296 | exit(-1); |
297 | } | |
298 | argc--; argv++; | |
299 | } | |
300 | ||
ec7aff5c | 301 | _SL_ = oneline ? "\\" : "\n"; |
aba5acdf | 302 | |
4d82962c | 303 | check_enable_color(color, json); |
5df60772 | 304 | |
ae665a52 | 305 | if (batch_file) |
351efcde | 306 | return batch(batch_file); |
ae665a52 | 307 | |
351efcde SH |
308 | if (rtnl_open(&rth, 0) < 0) |
309 | exit(1); | |
310 | ||
aea41afc DA |
311 | rtnl_set_strict_dump(&rth); |
312 | ||
ae665a52 | 313 | if (strlen(basename) > 2) |
351efcde SH |
314 | return do_cmd(basename+2, argc, argv); |
315 | ||
ae665a52 | 316 | if (argc > 1) |
351efcde SH |
317 | return do_cmd(argv[1], argc-1, argv+1); |
318 | ||
319 | rtnl_close(&rth); | |
aba5acdf SH |
320 | usage(); |
321 | } |