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* route This file contains an implementation of the command
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* that manages the IP routing table in the kernel.
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* Version: $Id: route.c,v 1.9 2001/04/15 14:41:17 pb Exp $
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* Maintainer: Bernd 'eckes' Eckenfels, <net-tools@lina.inka.de>
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* Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
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* (derived from FvK's 'route.c 1.70 01/04/94')
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* Johannes Stille: for Net-2Debugged by
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* <johannes@titan.os.open.de>
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* Linus Torvalds: Misc Changes
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* Alan Cox: add the new mtu/window stuff
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* Miquel van Smoorenburg: rt_add and rt_del
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* {1.79} Bernd Eckenfels: route_info
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* {1.80} Bernd Eckenfels: reject, metric, irtt, 1.2.x support.
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* {1.81} Bernd Eckenfels: reject routes need a dummy device
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*960127 {1.82} Bernd Eckenfels: 'mod' and 'dyn' 'reinstate' added
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*960129 {1.83} Bernd Eckenfels: resolve and getsock now in lib/,
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* REJECT displays '-' as gatway.
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*960202 {1.84} Bernd Eckenfels: net-features support added
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*960203 {1.85} Bernd Eckenfels: "#ifdef' in '#if' for net-features
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* -A (aftrans) support, get_longopts
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*960206 {1.86} Bernd Eckenfels: route_init();
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*960218 {1.87} Bernd Eckenfels: netinet/in.h added
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*960221 {1.88} Bernd Eckenfels: aftrans_dfl support
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*960222 {1.90} Bernd Eckenfels: moved all AF specific code to lib/.
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*960413 {1.91} Bernd Eckenfels: new RTACTION support+FLAG_CACHE/FIB
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*960426 {1.92} Bernd Eckenfels: FLAG_SYM/-N support
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*960823 {x.xx} Frank Strauss: INET6 stuff
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*980629 {1.95} Arnaldo Carvalho de Melo: gettext instead of catgets
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*990101 {1.96} Bernd Eckenfels: fixed usage and FLAG_CACHE Output
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*20010404 {1.97} Arnaldo Carvalho de Melo: use setlocale
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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/* #include <net/route.h> realy broken */
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#include <netinet/in.h>
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#include <netinet/in.h>
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#include <arpa/nameser.h>
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#include <linux/param.h>
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#include "net-support.h"
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#include "pathnames.h"
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#define DFLT_AF "inet"
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#include "lib/net-features.h" /* needs some of the system includes above! */
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char *Release = RELEASE, *Version = "route 1.98 (2001-04-15)";
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int opt_n = 0; /* numerical output flag */
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int opt_v = 0; /* debugging output flag */
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int opt_e = 1; /* 1,2,3=type of routetable */
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int opt_fc = 0; /* routing cache/FIB */
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int opt_h = 0; /* help selected */
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struct aftype *ap; /* current address family */
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static void usage(void)
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fprintf(stderr, _("Usage: route [-nNvee] [-FC] [<AF>] List kernel routing tables\n"));
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fprintf(stderr, _(" route [-v] [-FC] {add|del|flush} ... Modify routing table for AF.\n\n"));
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fprintf(stderr, _(" route {-h|--help} [<AF>] Detailed usage syntax for specified AF.\n"));
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fprintf(stderr, _(" route {-V|--version} Display version/author and exit.\n\n"));
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fprintf(stderr, _(" -v, --verbose be verbose\n"));
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fprintf(stderr, _(" -n, --numeric don't resolve names\n"));
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fprintf(stderr, _(" -e, --extend display other/more information\n"));
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fprintf(stderr, _(" -F, --fib display Forwarding Information Base (default)\n"));
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fprintf(stderr, _(" -C, --cache display routing cache instead of FIB\n\n"));
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fprintf(stderr, _(" <AF>=Use '-A <af>' or '--<af>'; default: %s\n"), DFLT_AF);
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fprintf(stderr, _(" List of possible address families (which support routing):\n"));
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print_aflist(1); /* 1 = routeable */
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static void version(void)
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fprintf(stderr, "%s\n%s\n%s\n", Release, Version, Features);
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int main(int argc, char **argv)
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int i, lop, what = 0;
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struct option longopts[] =
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{"extend", 0, 0, 'e'},
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{"verbose", 0, 0, 'v'},
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{"version", 0, 0, 'V'},
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{"numeric", 0, 0, 'n'},
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{"symbolic", 0, 0, 'N'},
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{"protocol", 1, 0, 'A'},
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{"cache", 0, 0, 'C'},
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setlocale (LC_ALL, "");
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bindtextdomain("net-tools", "/usr/share/locale");
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textdomain("net-tools");
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getroute_init(); /* Set up AF routing support */
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/* getopts and -net wont work :-/ */
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for (tmp = argv; *tmp; tmp++) {
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if (!strcmp(*tmp, "-net"))
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strcpy(*tmp, "#net");
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else if (!strcmp(*tmp, "-host"))
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strcpy(*tmp, "#host");
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/* Fetch the command-line arguments. */
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while ((i = getopt_long(argc, argv, "A:eCFhnNVv?", longopts, &lop)) != EOF)
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opt_v |= FLAG_VERBOSE;
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if (lop < 0 || lop >= AFTRANS_CNT) {
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EINTERN("route.c", "longopts 1 range");
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if ((i = aftrans_opt(longopts[lop].name)))
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opt_fc |= FLAG_CACHE;
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if ((i = aftrans_opt(optarg)))
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what = RTACTION_HELP;
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/* this will initialise afname[] */
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aftrans_def("route", progname, DFLT_AF);
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/* Do we have to show the contents of the routing table? */
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what = RTACTION_SHOW;
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if (!strcmp(*argv, "add"))
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else if (!strcmp(*argv, "del") || !strcmp(*argv, "delete"))
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else if (!strcmp(*argv, "flush"))
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what = RTACTION_FLUSH;
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options = (opt_e & FLAG_EXT) | opt_n | opt_fc | opt_v;
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if (what == RTACTION_SHOW)
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i = route_info(afname, options);
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i = route_edit(what, afname, options, ++argv);
added
removed
route.c
