mirror of
https://git.FreeBSD.org/src.git
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4f7bf7a846
Pointed out by: glebius
1232 lines
30 KiB
C
1232 lines
30 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1983, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <sys/module.h>
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#include <sys/linker.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#include <net/route.h>
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/* IP */
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <ifaddrs.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#ifdef JAIL
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#include <jail.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "ifconfig.h"
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/*
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* Since "struct ifreq" is composed of various union members, callers
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* should pay special attention to interpret the value.
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* (.e.g. little/big endian difference in the structure.)
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*/
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struct ifreq ifr;
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char name[IFNAMSIZ];
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char *descr = NULL;
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size_t descrlen = 64;
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int setaddr;
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int setmask;
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int doalias;
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int clearaddr;
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int newaddr = 1;
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int verbose;
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int noload;
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int supmedia = 0;
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int printkeys = 0; /* Print keying material for interfaces. */
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static int ifconfig(int argc, char *const *argv, int iscreate,
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const struct afswtch *afp);
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static void status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
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struct ifaddrs *ifa);
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static void tunnel_status(int s);
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static void usage(void);
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static struct afswtch *af_getbyname(const char *name);
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static struct afswtch *af_getbyfamily(int af);
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static void af_other_status(int);
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static struct option *opts = NULL;
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void
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opt_register(struct option *p)
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{
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p->next = opts;
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opts = p;
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}
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static void
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usage(void)
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{
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char options[1024];
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struct option *p;
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/* XXX not right but close enough for now */
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options[0] = '\0';
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for (p = opts; p != NULL; p = p->next) {
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strlcat(options, p->opt_usage, sizeof(options));
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strlcat(options, " ", sizeof(options));
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}
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fprintf(stderr,
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"usage: ifconfig %sinterface address_family [address [dest_address]]\n"
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" [parameters]\n"
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" ifconfig interface create\n"
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" ifconfig -a %s[-d] [-m] [-u] [-v] [address_family]\n"
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" ifconfig -l [-d] [-u] [address_family]\n"
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" ifconfig %s[-d] [-m] [-u] [-v]\n",
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options, options, options);
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exit(1);
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}
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int
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main(int argc, char *argv[])
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{
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int c, all, namesonly, downonly, uponly;
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const struct afswtch *afp = NULL;
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int ifindex;
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struct ifaddrs *ifap, *ifa;
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struct ifreq paifr;
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const struct sockaddr_dl *sdl;
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char options[1024], *cp, *namecp = NULL;
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const char *ifname;
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struct option *p;
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size_t iflen;
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all = downonly = uponly = namesonly = noload = verbose = 0;
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/* Parse leading line options */
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strlcpy(options, "adklmnuv", sizeof(options));
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for (p = opts; p != NULL; p = p->next)
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strlcat(options, p->opt, sizeof(options));
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while ((c = getopt(argc, argv, options)) != -1) {
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switch (c) {
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case 'a': /* scan all interfaces */
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all++;
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break;
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case 'd': /* restrict scan to "down" interfaces */
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downonly++;
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break;
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case 'k':
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printkeys++;
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break;
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case 'l': /* scan interface names only */
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namesonly++;
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break;
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case 'm': /* show media choices in status */
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supmedia = 1;
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break;
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case 'n': /* suppress module loading */
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noload++;
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break;
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case 'u': /* restrict scan to "up" interfaces */
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uponly++;
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break;
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case 'v':
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verbose++;
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break;
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default:
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for (p = opts; p != NULL; p = p->next)
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if (p->opt[0] == c) {
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p->cb(optarg);
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break;
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}
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if (p == NULL)
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usage();
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break;
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}
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}
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argc -= optind;
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argv += optind;
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/* -l cannot be used with -a or -m */
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if (namesonly && (all || supmedia))
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usage();
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/* nonsense.. */
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if (uponly && downonly)
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usage();
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/* no arguments is equivalent to '-a' */
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if (!namesonly && argc < 1)
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all = 1;
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/* -a and -l allow an address family arg to limit the output */
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if (all || namesonly) {
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if (argc > 1)
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usage();
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ifname = NULL;
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ifindex = 0;
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if (argc == 1) {
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afp = af_getbyname(*argv);
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if (afp == NULL) {
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warnx("Address family '%s' unknown.", *argv);
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usage();
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}
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if (afp->af_name != NULL)
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argc--, argv++;
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/* leave with afp non-zero */
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}
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} else {
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/* not listing, need an argument */
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if (argc < 1)
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usage();
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ifname = *argv;
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argc--, argv++;
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/* check and maybe load support for this interface */
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ifmaybeload(ifname);
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ifindex = if_nametoindex(ifname);
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if (ifindex == 0) {
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/*
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* NOTE: We must special-case the `create' command
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* right here as we would otherwise fail when trying
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* to find the interface.
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*/
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if (argc > 0 && (strcmp(argv[0], "create") == 0 ||
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strcmp(argv[0], "plumb") == 0)) {
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iflen = strlcpy(name, ifname, sizeof(name));
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if (iflen >= sizeof(name))
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errx(1, "%s: cloning name too long",
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ifname);
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ifconfig(argc, argv, 1, NULL);
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exit(0);
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}
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#ifdef JAIL
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/*
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* NOTE: We have to special-case the `-vnet' command
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* right here as we would otherwise fail when trying
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* to find the interface as it lives in another vnet.
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*/
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if (argc > 0 && (strcmp(argv[0], "-vnet") == 0)) {
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iflen = strlcpy(name, ifname, sizeof(name));
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if (iflen >= sizeof(name))
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errx(1, "%s: interface name too long",
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ifname);
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ifconfig(argc, argv, 0, NULL);
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exit(0);
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}
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#endif
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errx(1, "interface %s does not exist", ifname);
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}
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}
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/* Check for address family */
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if (argc > 0) {
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afp = af_getbyname(*argv);
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if (afp != NULL)
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argc--, argv++;
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}
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if (getifaddrs(&ifap) != 0)
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err(EXIT_FAILURE, "getifaddrs");
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cp = NULL;
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ifindex = 0;
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for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
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memset(&paifr, 0, sizeof(paifr));
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strncpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name));
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if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) {
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memcpy(&paifr.ifr_addr, ifa->ifa_addr,
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ifa->ifa_addr->sa_len);
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}
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if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0)
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continue;
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if (ifa->ifa_addr->sa_family == AF_LINK)
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sdl = (const struct sockaddr_dl *) ifa->ifa_addr;
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else
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sdl = NULL;
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if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly)
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continue;
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iflen = strlcpy(name, ifa->ifa_name, sizeof(name));
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if (iflen >= sizeof(name)) {
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warnx("%s: interface name too long, skipping",
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ifa->ifa_name);
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continue;
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}
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cp = ifa->ifa_name;
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if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0)
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continue;
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if (downonly && (ifa->ifa_flags & IFF_UP) != 0)
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continue;
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if (uponly && (ifa->ifa_flags & IFF_UP) == 0)
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continue;
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/*
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* Are we just listing the interfaces?
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*/
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if (namesonly) {
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if (namecp == cp)
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continue;
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if (afp != NULL) {
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/* special case for "ether" address family */
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if (!strcmp(afp->af_name, "ether")) {
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if (sdl == NULL ||
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(sdl->sdl_type != IFT_ETHER &&
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sdl->sdl_type != IFT_L2VLAN &&
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sdl->sdl_type != IFT_BRIDGE) ||
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sdl->sdl_alen != ETHER_ADDR_LEN)
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continue;
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} else {
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if (ifa->ifa_addr->sa_family != afp->af_af)
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continue;
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}
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}
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namecp = cp;
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ifindex++;
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if (ifindex > 1)
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printf(" ");
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fputs(name, stdout);
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continue;
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}
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ifindex++;
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if (argc > 0)
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ifconfig(argc, argv, 0, afp);
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else
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status(afp, sdl, ifa);
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}
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if (namesonly)
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printf("\n");
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freeifaddrs(ifap);
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exit(0);
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}
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static struct afswtch *afs = NULL;
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void
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af_register(struct afswtch *p)
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{
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p->af_next = afs;
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afs = p;
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}
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static struct afswtch *
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af_getbyname(const char *name)
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{
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struct afswtch *afp;
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for (afp = afs; afp != NULL; afp = afp->af_next)
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if (strcmp(afp->af_name, name) == 0)
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return afp;
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return NULL;
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}
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static struct afswtch *
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af_getbyfamily(int af)
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{
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struct afswtch *afp;
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for (afp = afs; afp != NULL; afp = afp->af_next)
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if (afp->af_af == af)
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return afp;
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return NULL;
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}
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static void
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af_other_status(int s)
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{
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struct afswtch *afp;
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uint8_t afmask[howmany(AF_MAX, NBBY)];
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memset(afmask, 0, sizeof(afmask));
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for (afp = afs; afp != NULL; afp = afp->af_next) {
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if (afp->af_other_status == NULL)
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continue;
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if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
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continue;
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afp->af_other_status(s);
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setbit(afmask, afp->af_af);
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}
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}
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static void
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af_all_tunnel_status(int s)
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{
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struct afswtch *afp;
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uint8_t afmask[howmany(AF_MAX, NBBY)];
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memset(afmask, 0, sizeof(afmask));
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for (afp = afs; afp != NULL; afp = afp->af_next) {
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if (afp->af_status_tunnel == NULL)
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continue;
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if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
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continue;
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afp->af_status_tunnel(s);
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setbit(afmask, afp->af_af);
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}
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}
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static struct cmd *cmds = NULL;
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void
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cmd_register(struct cmd *p)
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{
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p->c_next = cmds;
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cmds = p;
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}
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static const struct cmd *
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cmd_lookup(const char *name, int iscreate)
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{
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#define N(a) (sizeof(a)/sizeof(a[0]))
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const struct cmd *p;
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for (p = cmds; p != NULL; p = p->c_next)
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if (strcmp(name, p->c_name) == 0) {
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if (iscreate) {
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if (p->c_iscloneop)
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return p;
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|
} else {
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|
if (!p->c_iscloneop)
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return p;
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}
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}
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return NULL;
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#undef N
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}
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struct callback {
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callback_func *cb_func;
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void *cb_arg;
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struct callback *cb_next;
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};
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static struct callback *callbacks = NULL;
|
|
|
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void
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callback_register(callback_func *func, void *arg)
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|
{
|
|
struct callback *cb;
|
|
|
|
cb = malloc(sizeof(struct callback));
|
|
if (cb == NULL)
|
|
errx(1, "unable to allocate memory for callback");
|
|
cb->cb_func = func;
|
|
cb->cb_arg = arg;
|
|
cb->cb_next = callbacks;
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callbacks = cb;
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|
}
|
|
|
|
/* specially-handled commands */
|
|
static void setifaddr(const char *, int, int, const struct afswtch *);
|
|
static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr);
|
|
|
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static void setifdstaddr(const char *, int, int, const struct afswtch *);
|
|
static const struct cmd setifdstaddr_cmd =
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DEF_CMD("ifdstaddr", 0, setifdstaddr);
|
|
|
|
static int
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|
ifconfig(int argc, char *const *argv, int iscreate, const struct afswtch *uafp)
|
|
{
|
|
const struct afswtch *afp, *nafp;
|
|
const struct cmd *p;
|
|
struct callback *cb;
|
|
int s;
|
|
|
|
strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
|
|
afp = NULL;
|
|
if (uafp != NULL)
|
|
afp = uafp;
|
|
/*
|
|
* This is the historical "accident" allowing users to configure IPv4
|
|
* addresses without the "inet" keyword which while a nice feature has
|
|
* proven to complicate other things. We cannot remove this but only
|
|
* make sure we will never have a similar implicit default for IPv6 or
|
|
* any other address familiy. We need a fallback though for
|
|
* ifconfig IF up/down etc. to work without INET support as people
|
|
* never used ifconfig IF link up/down, etc. either.
|
|
*/
|
|
#ifndef RESCUE
|
|
#ifdef INET
|
|
if (afp == NULL && feature_present("inet"))
|
|
afp = af_getbyname("inet");
|
|
#endif
|
|
#endif
|
|
if (afp == NULL)
|
|
afp = af_getbyname("link");
|
|
if (afp == NULL) {
|
|
warnx("Please specify an address_family.");
|
|
usage();
|
|
}
|
|
top:
|
|
ifr.ifr_addr.sa_family =
|
|
afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ?
|
|
AF_LOCAL : afp->af_af;
|
|
|
|
if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 &&
|
|
(uafp != NULL || errno != EAFNOSUPPORT ||
|
|
(s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0))
|
|
err(1, "socket(family %u,SOCK_DGRAM", ifr.ifr_addr.sa_family);
|
|
|
|
while (argc > 0) {
|
|
p = cmd_lookup(*argv, iscreate);
|
|
if (iscreate && p == NULL) {
|
|
/*
|
|
* Push the clone create callback so the new
|
|
* device is created and can be used for any
|
|
* remaining arguments.
|
|
*/
|
|
cb = callbacks;
|
|
if (cb == NULL)
|
|
errx(1, "internal error, no callback");
|
|
callbacks = cb->cb_next;
|
|
cb->cb_func(s, cb->cb_arg);
|
|
iscreate = 0;
|
|
/*
|
|
* Handle any address family spec that
|
|
* immediately follows and potentially
|
|
* recreate the socket.
|
|
*/
|
|
nafp = af_getbyname(*argv);
|
|
if (nafp != NULL) {
|
|
argc--, argv++;
|
|
if (nafp != afp) {
|
|
close(s);
|
|
afp = nafp;
|
|
goto top;
|
|
}
|
|
}
|
|
/*
|
|
* Look for a normal parameter.
|
|
*/
|
|
continue;
|
|
}
|
|
if (p == NULL) {
|
|
/*
|
|
* Not a recognized command, choose between setting
|
|
* the interface address and the dst address.
|
|
*/
|
|
p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd);
|
|
}
|
|
if (p->c_u.c_func || p->c_u.c_func2) {
|
|
if (p->c_parameter == NEXTARG) {
|
|
if (argv[1] == NULL)
|
|
errx(1, "'%s' requires argument",
|
|
p->c_name);
|
|
p->c_u.c_func(argv[1], 0, s, afp);
|
|
argc--, argv++;
|
|
} else if (p->c_parameter == OPTARG) {
|
|
p->c_u.c_func(argv[1], 0, s, afp);
|
|
if (argv[1] != NULL)
|
|
argc--, argv++;
|
|
} else if (p->c_parameter == NEXTARG2) {
|
|
if (argc < 3)
|
|
errx(1, "'%s' requires 2 arguments",
|
|
p->c_name);
|
|
p->c_u.c_func2(argv[1], argv[2], s, afp);
|
|
argc -= 2, argv += 2;
|
|
} else
|
|
p->c_u.c_func(*argv, p->c_parameter, s, afp);
|
|
}
|
|
argc--, argv++;
|
|
}
|
|
|
|
/*
|
|
* Do any post argument processing required by the address family.
|
|
*/
|
|
if (afp->af_postproc != NULL)
|
|
afp->af_postproc(s, afp);
|
|
/*
|
|
* Do deferred callbacks registered while processing
|
|
* command-line arguments.
|
|
*/
|
|
for (cb = callbacks; cb != NULL; cb = cb->cb_next)
|
|
cb->cb_func(s, cb->cb_arg);
|
|
/*
|
|
* Do deferred operations.
|
|
*/
|
|
if (clearaddr) {
|
|
if (afp->af_ridreq == NULL || afp->af_difaddr == 0) {
|
|
warnx("interface %s cannot change %s addresses!",
|
|
name, afp->af_name);
|
|
clearaddr = 0;
|
|
}
|
|
}
|
|
if (clearaddr) {
|
|
int ret;
|
|
strncpy(afp->af_ridreq, name, sizeof ifr.ifr_name);
|
|
ret = ioctl(s, afp->af_difaddr, afp->af_ridreq);
|
|
if (ret < 0) {
|
|
if (errno == EADDRNOTAVAIL && (doalias >= 0)) {
|
|
/* means no previous address for interface */
|
|
} else
|
|
Perror("ioctl (SIOCDIFADDR)");
|
|
}
|
|
}
|
|
if (newaddr) {
|
|
if (afp->af_addreq == NULL || afp->af_aifaddr == 0) {
|
|
warnx("interface %s cannot change %s addresses!",
|
|
name, afp->af_name);
|
|
newaddr = 0;
|
|
}
|
|
}
|
|
if (newaddr && (setaddr || setmask)) {
|
|
strncpy(afp->af_addreq, name, sizeof ifr.ifr_name);
|
|
if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0)
|
|
Perror("ioctl (SIOCAIFADDR)");
|
|
}
|
|
|
|
close(s);
|
|
return(0);
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
static void
|
|
setifaddr(const char *addr, int param, int s, const struct afswtch *afp)
|
|
{
|
|
if (afp->af_getaddr == NULL)
|
|
return;
|
|
/*
|
|
* Delay the ioctl to set the interface addr until flags are all set.
|
|
* The address interpretation may depend on the flags,
|
|
* and the flags may change when the address is set.
|
|
*/
|
|
setaddr++;
|
|
if (doalias == 0 && afp->af_af != AF_LINK)
|
|
clearaddr = 1;
|
|
afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR));
|
|
}
|
|
|
|
static void
|
|
settunnel(const char *src, const char *dst, int s, const struct afswtch *afp)
|
|
{
|
|
struct addrinfo *srcres, *dstres;
|
|
int ecode;
|
|
|
|
if (afp->af_settunnel == NULL) {
|
|
warn("address family %s does not support tunnel setup",
|
|
afp->af_name);
|
|
return;
|
|
}
|
|
|
|
if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0)
|
|
errx(1, "error in parsing address string: %s",
|
|
gai_strerror(ecode));
|
|
|
|
if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0)
|
|
errx(1, "error in parsing address string: %s",
|
|
gai_strerror(ecode));
|
|
|
|
if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family)
|
|
errx(1,
|
|
"source and destination address families do not match");
|
|
|
|
afp->af_settunnel(s, srcres, dstres);
|
|
|
|
freeaddrinfo(srcres);
|
|
freeaddrinfo(dstres);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
deletetunnel(const char *vname, int param, int s, const struct afswtch *afp)
|
|
{
|
|
|
|
if (ioctl(s, SIOCDIFPHYADDR, &ifr) < 0)
|
|
err(1, "SIOCDIFPHYADDR");
|
|
}
|
|
|
|
#ifdef JAIL
|
|
static void
|
|
setifvnet(const char *jname, int dummy __unused, int s,
|
|
const struct afswtch *afp)
|
|
{
|
|
struct ifreq my_ifr;
|
|
|
|
memcpy(&my_ifr, &ifr, sizeof(my_ifr));
|
|
my_ifr.ifr_jid = jail_getid(jname);
|
|
if (my_ifr.ifr_jid < 0)
|
|
errx(1, "%s", jail_errmsg);
|
|
if (ioctl(s, SIOCSIFVNET, &my_ifr) < 0)
|
|
err(1, "SIOCSIFVNET");
|
|
}
|
|
|
|
static void
|
|
setifrvnet(const char *jname, int dummy __unused, int s,
|
|
const struct afswtch *afp)
|
|
{
|
|
struct ifreq my_ifr;
|
|
|
|
memcpy(&my_ifr, &ifr, sizeof(my_ifr));
|
|
my_ifr.ifr_jid = jail_getid(jname);
|
|
if (my_ifr.ifr_jid < 0)
|
|
errx(1, "%s", jail_errmsg);
|
|
if (ioctl(s, SIOCSIFRVNET, &my_ifr) < 0)
|
|
err(1, "SIOCSIFRVNET(%d, %s)", my_ifr.ifr_jid, my_ifr.ifr_name);
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
setifnetmask(const char *addr, int dummy __unused, int s,
|
|
const struct afswtch *afp)
|
|
{
|
|
if (afp->af_getaddr != NULL) {
|
|
setmask++;
|
|
afp->af_getaddr(addr, MASK);
|
|
}
|
|
}
|
|
|
|
static void
|
|
setifbroadaddr(const char *addr, int dummy __unused, int s,
|
|
const struct afswtch *afp)
|
|
{
|
|
if (afp->af_getaddr != NULL)
|
|
afp->af_getaddr(addr, DSTADDR);
|
|
}
|
|
|
|
static void
|
|
notealias(const char *addr, int param, int s, const struct afswtch *afp)
|
|
{
|
|
#define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
|
|
if (setaddr && doalias == 0 && param < 0)
|
|
if (afp->af_addreq != NULL && afp->af_ridreq != NULL)
|
|
bcopy((caddr_t)rqtosa(af_addreq),
|
|
(caddr_t)rqtosa(af_ridreq),
|
|
rqtosa(af_addreq)->sa_len);
|
|
doalias = param;
|
|
if (param < 0) {
|
|
clearaddr = 1;
|
|
newaddr = 0;
|
|
} else
|
|
clearaddr = 0;
|
|
#undef rqtosa
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
static void
|
|
setifdstaddr(const char *addr, int param __unused, int s,
|
|
const struct afswtch *afp)
|
|
{
|
|
if (afp->af_getaddr != NULL)
|
|
afp->af_getaddr(addr, DSTADDR);
|
|
}
|
|
|
|
/*
|
|
* Note: doing an SIOCIGIFFLAGS scribbles on the union portion
|
|
* of the ifreq structure, which may confuse other parts of ifconfig.
|
|
* Make a private copy so we can avoid that.
|
|
*/
|
|
static void
|
|
setifflags(const char *vname, int value, int s, const struct afswtch *afp)
|
|
{
|
|
struct ifreq my_ifr;
|
|
int flags;
|
|
|
|
memset(&my_ifr, 0, sizeof(my_ifr));
|
|
(void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name));
|
|
|
|
if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) {
|
|
Perror("ioctl (SIOCGIFFLAGS)");
|
|
exit(1);
|
|
}
|
|
flags = (my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16);
|
|
|
|
if (value < 0) {
|
|
value = -value;
|
|
flags &= ~value;
|
|
} else
|
|
flags |= value;
|
|
my_ifr.ifr_flags = flags & 0xffff;
|
|
my_ifr.ifr_flagshigh = flags >> 16;
|
|
if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0)
|
|
Perror(vname);
|
|
}
|
|
|
|
void
|
|
setifcap(const char *vname, int value, int s, const struct afswtch *afp)
|
|
{
|
|
int flags;
|
|
|
|
if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) {
|
|
Perror("ioctl (SIOCGIFCAP)");
|
|
exit(1);
|
|
}
|
|
flags = ifr.ifr_curcap;
|
|
if (value < 0) {
|
|
value = -value;
|
|
flags &= ~value;
|
|
} else
|
|
flags |= value;
|
|
flags &= ifr.ifr_reqcap;
|
|
ifr.ifr_reqcap = flags;
|
|
if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0)
|
|
Perror(vname);
|
|
}
|
|
|
|
static void
|
|
setifmetric(const char *val, int dummy __unused, int s,
|
|
const struct afswtch *afp)
|
|
{
|
|
strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
|
|
ifr.ifr_metric = atoi(val);
|
|
if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0)
|
|
warn("ioctl (set metric)");
|
|
}
|
|
|
|
static void
|
|
setifmtu(const char *val, int dummy __unused, int s,
|
|
const struct afswtch *afp)
|
|
{
|
|
strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
|
|
ifr.ifr_mtu = atoi(val);
|
|
if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0)
|
|
warn("ioctl (set mtu)");
|
|
}
|
|
|
|
static void
|
|
setifname(const char *val, int dummy __unused, int s,
|
|
const struct afswtch *afp)
|
|
{
|
|
char *newname;
|
|
|
|
newname = strdup(val);
|
|
if (newname == NULL) {
|
|
warn("no memory to set ifname");
|
|
return;
|
|
}
|
|
ifr.ifr_data = newname;
|
|
if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) {
|
|
warn("ioctl (set name)");
|
|
free(newname);
|
|
return;
|
|
}
|
|
strlcpy(name, newname, sizeof(name));
|
|
free(newname);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
setifdescr(const char *val, int dummy __unused, int s,
|
|
const struct afswtch *afp)
|
|
{
|
|
char *newdescr;
|
|
|
|
ifr.ifr_buffer.length = strlen(val) + 1;
|
|
if (ifr.ifr_buffer.length == 1) {
|
|
ifr.ifr_buffer.buffer = newdescr = NULL;
|
|
ifr.ifr_buffer.length = 0;
|
|
} else {
|
|
newdescr = strdup(val);
|
|
ifr.ifr_buffer.buffer = newdescr;
|
|
if (newdescr == NULL) {
|
|
warn("no memory to set ifdescr");
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0)
|
|
warn("ioctl (set descr)");
|
|
|
|
free(newdescr);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
unsetifdescr(const char *val, int value, int s, const struct afswtch *afp)
|
|
{
|
|
|
|
setifdescr("", 0, s, 0);
|
|
}
|
|
|
|
#define IFFBITS \
|
|
"\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \
|
|
"\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \
|
|
"\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP"
|
|
|
|
#define IFCAPBITS \
|
|
"\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \
|
|
"\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \
|
|
"\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \
|
|
"\26RXCSUM_IPV6\27TXCSUM_IPV6"
|
|
|
|
/*
|
|
* Print the status of the interface. If an address family was
|
|
* specified, show only it; otherwise, show them all.
|
|
*/
|
|
static void
|
|
status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
|
|
struct ifaddrs *ifa)
|
|
{
|
|
struct ifaddrs *ift;
|
|
int allfamilies, s;
|
|
struct ifstat ifs;
|
|
|
|
if (afp == NULL) {
|
|
allfamilies = 1;
|
|
ifr.ifr_addr.sa_family = AF_LOCAL;
|
|
} else {
|
|
allfamilies = 0;
|
|
ifr.ifr_addr.sa_family =
|
|
afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af;
|
|
}
|
|
strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
|
|
|
|
s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0);
|
|
if (s < 0)
|
|
err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
|
|
|
|
printf("%s: ", name);
|
|
printb("flags", ifa->ifa_flags, IFFBITS);
|
|
if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1)
|
|
printf(" metric %d", ifr.ifr_metric);
|
|
if (ioctl(s, SIOCGIFMTU, &ifr) != -1)
|
|
printf(" mtu %d", ifr.ifr_mtu);
|
|
putchar('\n');
|
|
|
|
for (;;) {
|
|
if ((descr = reallocf(descr, descrlen)) != NULL) {
|
|
ifr.ifr_buffer.buffer = descr;
|
|
ifr.ifr_buffer.length = descrlen;
|
|
if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) {
|
|
if (ifr.ifr_buffer.buffer == descr) {
|
|
if (strlen(descr) > 0)
|
|
printf("\tdescription: %s\n",
|
|
descr);
|
|
} else if (ifr.ifr_buffer.length > descrlen) {
|
|
descrlen = ifr.ifr_buffer.length;
|
|
continue;
|
|
}
|
|
}
|
|
} else
|
|
warn("unable to allocate memory for interface"
|
|
"description");
|
|
break;
|
|
}
|
|
|
|
if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) {
|
|
if (ifr.ifr_curcap != 0) {
|
|
printb("\toptions", ifr.ifr_curcap, IFCAPBITS);
|
|
putchar('\n');
|
|
}
|
|
if (supmedia && ifr.ifr_reqcap != 0) {
|
|
printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS);
|
|
putchar('\n');
|
|
}
|
|
}
|
|
|
|
tunnel_status(s);
|
|
|
|
for (ift = ifa; ift != NULL; ift = ift->ifa_next) {
|
|
if (ift->ifa_addr == NULL)
|
|
continue;
|
|
if (strcmp(ifa->ifa_name, ift->ifa_name) != 0)
|
|
continue;
|
|
if (allfamilies) {
|
|
const struct afswtch *p;
|
|
p = af_getbyfamily(ift->ifa_addr->sa_family);
|
|
if (p != NULL && p->af_status != NULL)
|
|
p->af_status(s, ift);
|
|
} else if (afp->af_af == ift->ifa_addr->sa_family)
|
|
afp->af_status(s, ift);
|
|
}
|
|
#if 0
|
|
if (allfamilies || afp->af_af == AF_LINK) {
|
|
const struct afswtch *lafp;
|
|
|
|
/*
|
|
* Hack; the link level address is received separately
|
|
* from the routing information so any address is not
|
|
* handled above. Cobble together an entry and invoke
|
|
* the status method specially.
|
|
*/
|
|
lafp = af_getbyname("lladdr");
|
|
if (lafp != NULL) {
|
|
info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl;
|
|
lafp->af_status(s, &info);
|
|
}
|
|
}
|
|
#endif
|
|
if (allfamilies)
|
|
af_other_status(s);
|
|
else if (afp->af_other_status != NULL)
|
|
afp->af_other_status(s);
|
|
|
|
strncpy(ifs.ifs_name, name, sizeof ifs.ifs_name);
|
|
if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0)
|
|
printf("%s", ifs.ascii);
|
|
|
|
if (verbose > 0)
|
|
sfp_status(s, &ifr, verbose);
|
|
|
|
close(s);
|
|
return;
|
|
}
|
|
|
|
static void
|
|
tunnel_status(int s)
|
|
{
|
|
af_all_tunnel_status(s);
|
|
}
|
|
|
|
void
|
|
Perror(const char *cmd)
|
|
{
|
|
switch (errno) {
|
|
|
|
case ENXIO:
|
|
errx(1, "%s: no such interface", cmd);
|
|
break;
|
|
|
|
case EPERM:
|
|
errx(1, "%s: permission denied", cmd);
|
|
break;
|
|
|
|
default:
|
|
err(1, "%s", cmd);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Print a value a la the %b format of the kernel's printf
|
|
*/
|
|
void
|
|
printb(const char *s, unsigned v, const char *bits)
|
|
{
|
|
int i, any = 0;
|
|
char c;
|
|
|
|
if (bits && *bits == 8)
|
|
printf("%s=%o", s, v);
|
|
else
|
|
printf("%s=%x", s, v);
|
|
bits++;
|
|
if (bits) {
|
|
putchar('<');
|
|
while ((i = *bits++) != '\0') {
|
|
if (v & (1 << (i-1))) {
|
|
if (any)
|
|
putchar(',');
|
|
any = 1;
|
|
for (; (c = *bits) > 32; bits++)
|
|
putchar(c);
|
|
} else
|
|
for (; *bits > 32; bits++)
|
|
;
|
|
}
|
|
putchar('>');
|
|
}
|
|
}
|
|
|
|
void
|
|
print_vhid(const struct ifaddrs *ifa, const char *s)
|
|
{
|
|
struct if_data *ifd;
|
|
|
|
if (ifa->ifa_data == NULL)
|
|
return;
|
|
|
|
ifd = ifa->ifa_data;
|
|
if (ifd->ifi_vhid == 0)
|
|
return;
|
|
|
|
printf("vhid %d ", ifd->ifi_vhid);
|
|
}
|
|
|
|
void
|
|
ifmaybeload(const char *name)
|
|
{
|
|
#define MOD_PREFIX_LEN 3 /* "if_" */
|
|
struct module_stat mstat;
|
|
int fileid, modid;
|
|
char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp;
|
|
const char *cp;
|
|
|
|
/* loading suppressed by the user */
|
|
if (noload)
|
|
return;
|
|
|
|
/* trim the interface number off the end */
|
|
strlcpy(ifname, name, sizeof(ifname));
|
|
for (dp = ifname; *dp != 0; dp++)
|
|
if (isdigit(*dp)) {
|
|
*dp = 0;
|
|
break;
|
|
}
|
|
|
|
/* turn interface and unit into module name */
|
|
strcpy(ifkind, "if_");
|
|
strlcpy(ifkind + MOD_PREFIX_LEN, ifname,
|
|
sizeof(ifkind) - MOD_PREFIX_LEN);
|
|
|
|
/* scan files in kernel */
|
|
mstat.version = sizeof(struct module_stat);
|
|
for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) {
|
|
/* scan modules in file */
|
|
for (modid = kldfirstmod(fileid); modid > 0;
|
|
modid = modfnext(modid)) {
|
|
if (modstat(modid, &mstat) < 0)
|
|
continue;
|
|
/* strip bus name if present */
|
|
if ((cp = strchr(mstat.name, '/')) != NULL) {
|
|
cp++;
|
|
} else {
|
|
cp = mstat.name;
|
|
}
|
|
/* already loaded? */
|
|
if (strncmp(ifname, cp, strlen(ifname) + 1) == 0 ||
|
|
strncmp(ifkind, cp, strlen(ifkind) + 1) == 0)
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* not present, we should try to load it */
|
|
kldload(ifkind);
|
|
}
|
|
|
|
static struct cmd basic_cmds[] = {
|
|
DEF_CMD("up", IFF_UP, setifflags),
|
|
DEF_CMD("down", -IFF_UP, setifflags),
|
|
DEF_CMD("arp", -IFF_NOARP, setifflags),
|
|
DEF_CMD("-arp", IFF_NOARP, setifflags),
|
|
DEF_CMD("debug", IFF_DEBUG, setifflags),
|
|
DEF_CMD("-debug", -IFF_DEBUG, setifflags),
|
|
DEF_CMD_ARG("description", setifdescr),
|
|
DEF_CMD_ARG("descr", setifdescr),
|
|
DEF_CMD("-description", 0, unsetifdescr),
|
|
DEF_CMD("-descr", 0, unsetifdescr),
|
|
DEF_CMD("promisc", IFF_PPROMISC, setifflags),
|
|
DEF_CMD("-promisc", -IFF_PPROMISC, setifflags),
|
|
DEF_CMD("add", IFF_UP, notealias),
|
|
DEF_CMD("alias", IFF_UP, notealias),
|
|
DEF_CMD("-alias", -IFF_UP, notealias),
|
|
DEF_CMD("delete", -IFF_UP, notealias),
|
|
DEF_CMD("remove", -IFF_UP, notealias),
|
|
#ifdef notdef
|
|
#define EN_SWABIPS 0x1000
|
|
DEF_CMD("swabips", EN_SWABIPS, setifflags),
|
|
DEF_CMD("-swabips", -EN_SWABIPS, setifflags),
|
|
#endif
|
|
DEF_CMD_ARG("netmask", setifnetmask),
|
|
DEF_CMD_ARG("metric", setifmetric),
|
|
DEF_CMD_ARG("broadcast", setifbroadaddr),
|
|
DEF_CMD_ARG2("tunnel", settunnel),
|
|
DEF_CMD("-tunnel", 0, deletetunnel),
|
|
DEF_CMD("deletetunnel", 0, deletetunnel),
|
|
#ifdef JAIL
|
|
DEF_CMD_ARG("vnet", setifvnet),
|
|
DEF_CMD_ARG("-vnet", setifrvnet),
|
|
#endif
|
|
DEF_CMD("link0", IFF_LINK0, setifflags),
|
|
DEF_CMD("-link0", -IFF_LINK0, setifflags),
|
|
DEF_CMD("link1", IFF_LINK1, setifflags),
|
|
DEF_CMD("-link1", -IFF_LINK1, setifflags),
|
|
DEF_CMD("link2", IFF_LINK2, setifflags),
|
|
DEF_CMD("-link2", -IFF_LINK2, setifflags),
|
|
DEF_CMD("monitor", IFF_MONITOR, setifflags),
|
|
DEF_CMD("-monitor", -IFF_MONITOR, setifflags),
|
|
DEF_CMD("staticarp", IFF_STATICARP, setifflags),
|
|
DEF_CMD("-staticarp", -IFF_STATICARP, setifflags),
|
|
DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap),
|
|
DEF_CMD("-rxcsum6", -IFCAP_RXCSUM_IPV6, setifcap),
|
|
DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap),
|
|
DEF_CMD("-txcsum6", -IFCAP_TXCSUM_IPV6, setifcap),
|
|
DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap),
|
|
DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap),
|
|
DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap),
|
|
DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap),
|
|
DEF_CMD("netcons", IFCAP_NETCONS, setifcap),
|
|
DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap),
|
|
DEF_CMD("polling", IFCAP_POLLING, setifcap),
|
|
DEF_CMD("-polling", -IFCAP_POLLING, setifcap),
|
|
DEF_CMD("tso6", IFCAP_TSO6, setifcap),
|
|
DEF_CMD("-tso6", -IFCAP_TSO6, setifcap),
|
|
DEF_CMD("tso4", IFCAP_TSO4, setifcap),
|
|
DEF_CMD("-tso4", -IFCAP_TSO4, setifcap),
|
|
DEF_CMD("tso", IFCAP_TSO, setifcap),
|
|
DEF_CMD("-tso", -IFCAP_TSO, setifcap),
|
|
DEF_CMD("toe", IFCAP_TOE, setifcap),
|
|
DEF_CMD("-toe", -IFCAP_TOE, setifcap),
|
|
DEF_CMD("lro", IFCAP_LRO, setifcap),
|
|
DEF_CMD("-lro", -IFCAP_LRO, setifcap),
|
|
DEF_CMD("wol", IFCAP_WOL, setifcap),
|
|
DEF_CMD("-wol", -IFCAP_WOL, setifcap),
|
|
DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap),
|
|
DEF_CMD("-wol_ucast", -IFCAP_WOL_UCAST, setifcap),
|
|
DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap),
|
|
DEF_CMD("-wol_mcast", -IFCAP_WOL_MCAST, setifcap),
|
|
DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap),
|
|
DEF_CMD("-wol_magic", -IFCAP_WOL_MAGIC, setifcap),
|
|
DEF_CMD("normal", -IFF_LINK0, setifflags),
|
|
DEF_CMD("compress", IFF_LINK0, setifflags),
|
|
DEF_CMD("noicmp", IFF_LINK1, setifflags),
|
|
DEF_CMD_ARG("mtu", setifmtu),
|
|
DEF_CMD_ARG("name", setifname),
|
|
};
|
|
|
|
static __constructor void
|
|
ifconfig_ctor(void)
|
|
{
|
|
#define N(a) (sizeof(a) / sizeof(a[0]))
|
|
size_t i;
|
|
|
|
for (i = 0; i < N(basic_cmds); i++)
|
|
cmd_register(&basic_cmds[i]);
|
|
#undef N
|
|
}
|