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/*
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* ip.c "ip" utility frontend.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <string.h>
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#include <errno.h>
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#include "SNAPSHOT.h"
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#include "utils.h"
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#include "ip_common.h"
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#include "namespace.h"
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#include "color.h"
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int preferred_family = AF_UNSPEC;
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int human_readable;
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int use_iec;
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int show_stats;
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int show_details;
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int oneline;
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int brief;
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int json;
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int timestamp;
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int force;
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int max_flush_loops = 10;
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int batch_mode;
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int numeric;
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bool do_all;
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struct rtnl_handle rth = { .fd = -1 };
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static void usage(void) __attribute__((noreturn));
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static void usage(void)
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{
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fprintf(stderr,
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"Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n"
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" ip [ -force ] -batch filename\n"
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"where OBJECT := { link | address | addrlabel | route | rule | neigh | ntable |\n"
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" tunnel | tuntap | maddress | mroute | mrule | monitor | xfrm |\n"
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" netns | l2tp | fou | macsec | tcp_metrics | token | netconf | ila |\n"
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" vrf | sr | nexthop | mptcp }\n"
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" OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |\n"
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" -h[uman-readable] | -iec | -j[son] | -p[retty] |\n"
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" -f[amily] { inet | inet6 | mpls | bridge | link } |\n"
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" -4 | -6 | -I | -D | -M | -B | -0 |\n"
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" -l[oops] { maximum-addr-flush-attempts } | -br[ief] |\n"
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" -o[neline] | -t[imestamp] | -ts[hort] | -b[atch] [filename] |\n"
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" -rc[vbuf] [size] | -n[etns] name | -N[umeric] | -a[ll] |\n"
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" -c[olor]}\n");
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exit(-1);
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}
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static int do_help(int argc, char **argv)
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{
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usage();
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return 0;
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}
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static const struct cmd {
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const char *cmd;
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int (*func)(int argc, char **argv);
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} cmds[] = {
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{ "address", do_ipaddr },
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{ "addrlabel", do_ipaddrlabel },
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{ "maddress", do_multiaddr },
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{ "route", do_iproute },
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{ "rule", do_iprule },
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{ "neighbor", do_ipneigh },
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{ "neighbour", do_ipneigh },
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{ "ntable", do_ipntable },
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{ "ntbl", do_ipntable },
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{ "link", do_iplink },
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{ "l2tp", do_ipl2tp },
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{ "fou", do_ipfou },
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{ "ila", do_ipila },
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{ "macsec", do_ipmacsec },
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{ "tunnel", do_iptunnel },
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{ "tunl", do_iptunnel },
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{ "tuntap", do_iptuntap },
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{ "tap", do_iptuntap },
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{ "token", do_iptoken },
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{ "tcpmetrics", do_tcp_metrics },
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{ "tcp_metrics", do_tcp_metrics },
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{ "monitor", do_ipmonitor },
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{ "xfrm", do_xfrm },
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{ "mroute", do_multiroute },
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{ "mrule", do_multirule },
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{ "netns", do_netns },
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{ "netconf", do_ipnetconf },
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{ "vrf", do_ipvrf},
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{ "sr", do_seg6 },
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{ "nexthop", do_ipnh },
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853c02 |
{ "mptcp", do_mptcp },
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{ "help", do_help },
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{ 0 }
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};
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static int do_cmd(const char *argv0, int argc, char **argv)
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{
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const struct cmd *c;
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for (c = cmds; c->cmd; ++c) {
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if (matches(argv0, c->cmd) == 0)
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return -(c->func(argc-1, argv+1));
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}
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fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv0);
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return EXIT_FAILURE;
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}
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static int batch(const char *name)
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{
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char *line = NULL;
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size_t len = 0;
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int ret = EXIT_SUCCESS;
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int orig_family = preferred_family;
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batch_mode = 1;
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if (name && strcmp(name, "-") != 0) {
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if (freopen(name, "r", stdin) == NULL) {
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fprintf(stderr,
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"Cannot open file \"%s\" for reading: %s\n",
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name, strerror(errno));
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return EXIT_FAILURE;
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}
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}
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if (rtnl_open(&rth, 0) < 0) {
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fprintf(stderr, "Cannot open rtnetlink\n");
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return EXIT_FAILURE;
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}
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cmdlineno = 0;
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while (getcmdline(&line, &len, stdin) != -1) {
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char *largv[100];
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int largc;
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preferred_family = orig_family;
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largc = makeargs(line, largv, 100);
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if (largc == 0)
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continue; /* blank line */
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if (do_cmd(largv[0], largc, largv)) {
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fprintf(stderr, "Command failed %s:%d\n",
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name, cmdlineno);
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ret = EXIT_FAILURE;
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if (!force)
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break;
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}
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}
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if (line)
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free(line);
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rtnl_close(&rth);
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return ret;
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}
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int main(int argc, char **argv)
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{
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char *basename;
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char *batch_file = NULL;
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int color = 0;
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/* to run vrf exec without root, capabilities might be set, drop them
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* if not needed as the first thing.
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* execv will drop them for the child command.
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* vrf exec requires:
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* - cap_dac_override to create the cgroup subdir in /sys
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* - cap_sys_admin to load the BPF program
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* - cap_net_admin to set the socket into the cgroup
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*/
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if (argc < 3 || strcmp(argv[1], "vrf") != 0 ||
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strcmp(argv[2], "exec") != 0)
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drop_cap();
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basename = strrchr(argv[0], '/');
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if (basename == NULL)
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basename = argv[0];
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else
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basename++;
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while (argc > 1) {
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char *opt = argv[1];
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if (strcmp(opt, "--") == 0) {
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argc--; argv++;
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break;
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}
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if (opt[0] != '-')
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break;
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if (opt[1] == '-')
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opt++;
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if (matches(opt, "-loops") == 0) {
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argc--;
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argv++;
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if (argc <= 1)
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usage();
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max_flush_loops = atoi(argv[1]);
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} else if (matches(opt, "-family") == 0) {
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argc--;
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argv++;
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if (argc <= 1)
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usage();
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if (strcmp(argv[1], "help") == 0)
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usage();
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else
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preferred_family = read_family(argv[1]);
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if (preferred_family == AF_UNSPEC)
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invarg("invalid protocol family", argv[1]);
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} else if (strcmp(opt, "-4") == 0) {
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preferred_family = AF_INET;
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} else if (strcmp(opt, "-6") == 0) {
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preferred_family = AF_INET6;
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d3f73b |
} else if (strcmp(opt, "-0") == 0) {
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preferred_family = AF_PACKET;
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d3f73b |
} else if (strcmp(opt, "-D") == 0) {
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preferred_family = AF_DECnet;
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d3f73b |
} else if (strcmp(opt, "-M") == 0) {
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preferred_family = AF_MPLS;
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Packit |
d3f73b |
} else if (strcmp(opt, "-B") == 0) {
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d3f73b |
preferred_family = AF_BRIDGE;
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Packit |
d3f73b |
} else if (matches(opt, "-human") == 0 ||
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d3f73b |
matches(opt, "-human-readable") == 0) {
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Packit |
d3f73b |
++human_readable;
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Packit |
d3f73b |
} else if (matches(opt, "-iec") == 0) {
|
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Packit |
d3f73b |
++use_iec;
|
|
Packit |
d3f73b |
} else if (matches(opt, "-stats") == 0 ||
|
|
Packit |
d3f73b |
matches(opt, "-statistics") == 0) {
|
|
Packit |
d3f73b |
++show_stats;
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|
Packit |
d3f73b |
} else if (matches(opt, "-details") == 0) {
|
|
Packit |
d3f73b |
++show_details;
|
|
Packit |
d3f73b |
} else if (matches(opt, "-resolve") == 0) {
|
|
Packit |
d3f73b |
++resolve_hosts;
|
|
Packit |
d3f73b |
} else if (matches(opt, "-oneline") == 0) {
|
|
Packit |
d3f73b |
++oneline;
|
|
Packit |
d3f73b |
} else if (matches(opt, "-timestamp") == 0) {
|
|
Packit |
d3f73b |
++timestamp;
|
|
Packit |
d3f73b |
} else if (matches(opt, "-tshort") == 0) {
|
|
Packit |
d3f73b |
++timestamp;
|
|
Packit |
d3f73b |
++timestamp_short;
|
|
Packit |
d3f73b |
} else if (matches(opt, "-Version") == 0) {
|
|
Packit |
d3f73b |
printf("ip utility, iproute2-ss%s\n", SNAPSHOT);
|
|
Packit |
d3f73b |
exit(0);
|
|
Packit |
d3f73b |
} else if (matches(opt, "-force") == 0) {
|
|
Packit |
d3f73b |
++force;
|
|
Packit |
d3f73b |
} else if (matches(opt, "-batch") == 0) {
|
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Packit |
d3f73b |
argc--;
|
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Packit |
d3f73b |
argv++;
|
|
Packit |
d3f73b |
if (argc <= 1)
|
|
Packit |
d3f73b |
usage();
|
|
Packit |
d3f73b |
batch_file = argv[1];
|
|
Packit |
d3f73b |
} else if (matches(opt, "-brief") == 0) {
|
|
Packit |
d3f73b |
++brief;
|
|
Packit |
d3f73b |
} else if (matches(opt, "-json") == 0) {
|
|
Packit |
d3f73b |
++json;
|
|
Packit |
d3f73b |
} else if (matches(opt, "-pretty") == 0) {
|
|
Packit |
d3f73b |
++pretty;
|
|
Packit |
d3f73b |
} else if (matches(opt, "-rcvbuf") == 0) {
|
|
Packit |
d3f73b |
unsigned int size;
|
|
Packit |
d3f73b |
|
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Packit |
d3f73b |
argc--;
|
|
Packit |
d3f73b |
argv++;
|
|
Packit |
d3f73b |
if (argc <= 1)
|
|
Packit |
d3f73b |
usage();
|
|
Packit |
d3f73b |
if (get_unsigned(&size, argv[1], 0)) {
|
|
Packit |
d3f73b |
fprintf(stderr, "Invalid rcvbuf size '%s'\n",
|
|
Packit |
d3f73b |
argv[1]);
|
|
Packit |
d3f73b |
exit(-1);
|
|
Packit |
d3f73b |
}
|
|
Packit |
d3f73b |
rcvbuf = size;
|
|
Packit |
d3f73b |
} else if (matches_color(opt, &color)) {
|
|
Packit |
d3f73b |
} else if (matches(opt, "-help") == 0) {
|
|
Packit |
d3f73b |
usage();
|
|
Packit |
d3f73b |
} else if (matches(opt, "-netns") == 0) {
|
|
Packit |
d3f73b |
NEXT_ARG();
|
|
Packit |
d3f73b |
if (netns_switch(argv[1]))
|
|
Packit |
d3f73b |
exit(-1);
|
|
Packit |
d3f73b |
} else if (matches(opt, "-Numeric") == 0) {
|
|
Packit |
d3f73b |
++numeric;
|
|
Packit |
d3f73b |
} else if (matches(opt, "-all") == 0) {
|
|
Packit |
d3f73b |
do_all = true;
|
|
Packit |
d3f73b |
} else {
|
|
Packit |
d3f73b |
fprintf(stderr,
|
|
Packit |
d3f73b |
"Option \"%s\" is unknown, try \"ip -help\".\n",
|
|
Packit |
d3f73b |
opt);
|
|
Packit |
d3f73b |
exit(-1);
|
|
Packit |
d3f73b |
}
|
|
Packit |
d3f73b |
argc--; argv++;
|
|
Packit |
d3f73b |
}
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
_SL_ = oneline ? "\\" : "\n";
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
check_enable_color(color, json);
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
if (batch_file)
|
|
Packit |
d3f73b |
return batch(batch_file);
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
if (rtnl_open(&rth, 0) < 0)
|
|
Packit |
d3f73b |
exit(1);
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
rtnl_set_strict_dump(&rth);
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
if (strlen(basename) > 2)
|
|
Packit |
d3f73b |
return do_cmd(basename+2, argc, argv);
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
if (argc > 1)
|
|
Packit |
d3f73b |
return do_cmd(argv[1], argc-1, argv+1);
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
rtnl_close(&rth);
|
|
Packit |
d3f73b |
usage();
|
|
Packit |
d3f73b |
}
|