mirror of
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60dd8da775
* Build with or without INET, INET6, or KVM features. * When built without KVM, the sysctl-based getifmaddrs() function is used as the back-end for the utility. * Reflect the fact that FreeBSD now uses the in_multi refcount as a true refcount. * Style. The utility may now be run without super-user privilege, albeit with a less detailed display, equivalent to that of the soon-to-be-retired netstat -g host-mode output. MFC after: 3 weeks
784 lines
18 KiB
C
784 lines
18 KiB
C
/* $KAME: ifmcstat.c,v 1.48 2006/11/15 05:13:59 itojun Exp $ */
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/*
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* Copyright (c) 2007 Bruce M. Simpson <bms@FreeBSD.org>
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* 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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* 3. Neither the name of the project 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 PROJECT 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 PROJECT 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/queue.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_types.h>
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#include <net/if_dl.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/igmp.h>
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#ifdef HAVE_IGMPV3
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# include <netinet/in_msf.h>
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#endif
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#define KERNEL
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# include <netinet/if_ether.h>
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#undef KERNEL
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#define _KERNEL
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# include <sys/sysctl.h>
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# include <netinet/igmp_var.h>
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#undef _KERNEL
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#ifdef INET6
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# ifdef HAVE_MLDV2
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# include <netinet6/in6_msf.h>
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# endif
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#include <netinet/icmp6.h>
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#define _KERNEL
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# include <netinet6/mld6_var.h>
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#undef _KERNEL
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#endif /* INET6 */
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <stddef.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdint.h>
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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 <ctype.h>
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#include <err.h>
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#include <fcntl.h>
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#include <kvm.h>
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#include <limits.h>
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#include <ifaddrs.h>
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#include <nlist.h>
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#include <sysexits.h>
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#include <unistd.h>
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/* XXX: This file currently assumes INET and KVM support in the base system. */
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#ifndef INET
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#define INET
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#endif
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union sockunion {
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struct sockaddr_storage ss;
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struct sockaddr sa;
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struct sockaddr_dl sdl;
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#ifdef INET
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struct sockaddr_in sin;
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#endif
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#ifdef INET6
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struct sockaddr_in6 sin6;
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#endif
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};
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typedef union sockunion sockunion_t;
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uint32_t ifindex = 0;
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int af = AF_UNSPEC;
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#define sa_equal(a1, a2) \
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(bcmp((a1), (a2), ((a1))->sa_len) == 0)
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#define sa_dl_equal(a1, a2) \
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((((struct sockaddr_dl *)(a1))->sdl_len == \
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((struct sockaddr_dl *)(a2))->sdl_len) && \
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(bcmp(LLADDR((struct sockaddr_dl *)(a1)), \
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LLADDR((struct sockaddr_dl *)(a2)), \
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((struct sockaddr_dl *)(a1))->sdl_alen) == 0))
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/*
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* Most of the code in this utility is to support the use of KVM for
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* post-mortem debugging of the multicast code.
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*/
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#ifdef WITH_KVM
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#ifdef INET
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static void if_addrlist(struct ifaddr *);
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static struct in_multi *
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in_multientry(struct in_multi *);
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#ifdef HAVE_IGMPV3
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static void in_addr_slistentry(struct in_addr_slist *, char *);
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#endif
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#endif /* INET */
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#ifdef INET6
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static void if6_addrlist(struct ifaddr *);
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static struct in6_multi *
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in6_multientry(struct in6_multi *);
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#ifdef HAVE_MLDV2
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static void in6_addr_slistentry(struct in6_addr_slist *, char *);
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#endif
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static const char * inet6_n2a(struct in6_addr *);
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#endif /* INET6 */
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static void kread(u_long, void *, int);
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static int ifmcstat_kvm(const char *kernel, const char *core);
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#define KREAD(addr, buf, type) \
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kread((u_long)addr, (void *)buf, sizeof(type))
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kvm_t *kvmd;
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struct nlist nl[] = {
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{ "_ifnet", 0, 0, 0, 0, },
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{ "", 0, 0, 0, 0, },
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};
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#define N_IFNET 0
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#endif /* WITH_KVM */
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static int ifmcstat_getifmaddrs(void);
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int main(int, char **);
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int
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main(int argc, char **argv)
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{
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int c, error;
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#ifdef WITH_KVM
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const char *kernel = NULL;
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const char *core = NULL;
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/* "ifmcstat [kernel]" format is supported for backward compatiblity */
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if (argc == 2)
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kernel = argv[1];
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#endif
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while ((c = getopt(argc, argv, "i:f:M:N:")) != -1) {
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switch (c) {
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case 'i':
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if ((ifindex = if_nametoindex(optarg)) == 0) {
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fprintf(stderr, "%s: unknown interface\n",
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optarg);
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exit(1);
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}
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break;
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case 'f':
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#ifdef INET
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if (strcmp(optarg, "inet") == 0) {
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af = AF_INET;
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break;
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}
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#endif
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#ifdef INET6
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if (strcmp(optarg, "inet6") == 0) {
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af = AF_INET6;
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break;
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}
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#endif
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fprintf(stderr, "%s: unknown address family\n", optarg);
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exit(1);
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/*NOTREACHED*/
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break;
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#ifdef WITH_KVM
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case 'M':
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core = strdup(optarg);
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break;
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case 'N':
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kernel = strdup(optarg);
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break;
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#endif
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default:
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fprintf(stderr,
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"usage: ifmcstat [-i interface] [-f address family]"
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#ifdef WITH_KVM
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" [-M core] [-N system]"
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#endif
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"\n");
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exit(1);
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break;
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/*NOTREACHED*/
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}
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}
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#ifdef WITH_KVM
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error = ifmcstat_kvm(kernel, core);
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/*
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* If KVM failed, and user did not explicitly specify a core file,
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* try the sysctl backend.
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*/
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if (error != 0 && (core == NULL && kernel == NULL))
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#endif
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error = ifmcstat_getifmaddrs();
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if (error != 0)
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exit(1);
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exit(0);
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/*NOTREACHED*/
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}
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#ifdef WITH_KVM
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static int
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ifmcstat_kvm(const char *kernel, const char *core)
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{
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char buf[_POSIX2_LINE_MAX], ifname[IFNAMSIZ];
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struct ifnet *ifp, *nifp, ifnet;
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if ((kvmd = kvm_openfiles(kernel, core, NULL, O_RDONLY, buf)) ==
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NULL) {
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perror("kvm_openfiles");
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return (-1);
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}
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if (kvm_nlist(kvmd, nl) < 0) {
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perror("kvm_nlist");
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return (-1);
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}
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if (nl[N_IFNET].n_value == 0) {
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printf("symbol %s not found\n", nl[N_IFNET].n_name);
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return (-1);
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}
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KREAD(nl[N_IFNET].n_value, &ifp, struct ifnet *);
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while (ifp) {
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KREAD(ifp, &ifnet, struct ifnet);
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nifp = ifnet.if_link.tqe_next;
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if (ifindex && ifindex != ifnet.if_index)
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goto next;
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printf("%s:\n", if_indextoname(ifnet.if_index, ifname));
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#ifdef INET
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if_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
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#endif
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#ifdef INET6
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if6_addrlist(TAILQ_FIRST(&ifnet.if_addrhead));
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#endif
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next:
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ifp = nifp;
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}
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return (0);
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}
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static void
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kread(u_long addr, void *buf, int len)
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{
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if (kvm_read(kvmd, addr, buf, len) != len) {
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perror("kvm_read");
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exit(1);
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}
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}
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#ifdef INET6
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static const char *
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inet6_n2a(struct in6_addr *p)
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{
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static char buf[NI_MAXHOST];
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struct sockaddr_in6 sin6;
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u_int32_t scopeid;
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const int niflags = NI_NUMERICHOST;
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memset(&sin6, 0, sizeof(sin6));
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sin6.sin6_family = AF_INET6;
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sin6.sin6_len = sizeof(struct sockaddr_in6);
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sin6.sin6_addr = *p;
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if (IN6_IS_ADDR_LINKLOCAL(p) || IN6_IS_ADDR_MC_LINKLOCAL(p) ||
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IN6_IS_ADDR_MC_NODELOCAL(p)) {
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scopeid = ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
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if (scopeid) {
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sin6.sin6_scope_id = scopeid;
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sin6.sin6_addr.s6_addr[2] = 0;
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sin6.sin6_addr.s6_addr[3] = 0;
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}
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}
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if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
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buf, sizeof(buf), NULL, 0, niflags) == 0)
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return buf;
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else
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return "(invalid)";
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}
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static void
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if6_addrlist(struct ifaddr *ifap)
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{
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struct ifaddr ifa;
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struct sockaddr sa;
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struct in6_ifaddr if6a;
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struct ifaddr *ifap0;
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if (af && af != AF_INET6)
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return;
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ifap0 = ifap;
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while (ifap) {
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KREAD(ifap, &ifa, struct ifaddr);
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if (ifa.ifa_addr == NULL)
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goto nextifap;
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KREAD(ifa.ifa_addr, &sa, struct sockaddr);
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if (sa.sa_family != PF_INET6)
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goto nextifap;
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KREAD(ifap, &if6a, struct in6_ifaddr);
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printf("\tinet6 %s\n", inet6_n2a(&if6a.ia_addr.sin6_addr));
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nextifap:
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ifap = ifa.ifa_link.tqe_next;
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}
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if (ifap0) {
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struct ifnet ifnet;
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struct ifmultiaddr ifm, *ifmp = 0;
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struct sockaddr_dl sdl;
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KREAD(ifap0, &ifa, struct ifaddr);
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KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
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if (TAILQ_FIRST(&ifnet.if_multiaddrs))
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ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
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while (ifmp) {
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KREAD(ifmp, &ifm, struct ifmultiaddr);
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if (ifm.ifma_addr == NULL)
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goto nextmulti;
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KREAD(ifm.ifma_addr, &sa, struct sockaddr);
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if (sa.sa_family != AF_INET6)
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goto nextmulti;
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(void)in6_multientry((struct in6_multi *)
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ifm.ifma_protospec);
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if (ifm.ifma_lladdr == 0)
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goto nextmulti;
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KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
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printf("\t\t\tmcast-macaddr %s refcnt %d\n",
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ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
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ifm.ifma_refcount);
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nextmulti:
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ifmp = TAILQ_NEXT(&ifm, ifma_link);
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}
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}
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}
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|
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static struct in6_multi *
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in6_multientry(struct in6_multi *mc)
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{
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struct in6_multi multi;
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#ifdef HAVE_MLDV2
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struct in6_multi_source src;
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struct router6_info rt6i;
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#endif
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KREAD(mc, &multi, struct in6_multi);
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printf("\t\tgroup %s", inet6_n2a(&multi.in6m_addr));
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printf(" refcnt %u\n", multi.in6m_refcount);
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|
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#ifdef HAVE_MLDV2
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if (multi.in6m_rti != NULL) {
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KREAD(multi.in6m_rti, &rt6i, struct router_info);
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printf("\t\t\t");
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switch (rt6i.rt6i_type) {
|
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case MLD_V1_ROUTER:
|
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printf("mldv1");
|
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break;
|
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case MLD_V2_ROUTER:
|
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printf("mldv2");
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break;
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default:
|
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printf("mldv?(%d)", rt6i.rt6i_type);
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break;
|
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}
|
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|
|
if (multi.in6m_source == NULL) {
|
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printf("\n");
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return(multi.in6m_entry.le_next);
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}
|
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|
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KREAD(multi.in6m_source, &src, struct in6_multi_source);
|
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printf(" mode=%s grpjoin=%d\n",
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src.i6ms_mode == MCAST_INCLUDE ? "include" :
|
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src.i6ms_mode == MCAST_EXCLUDE ? "exclude" :
|
|
"???",
|
|
src.i6ms_grpjoin);
|
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in6_addr_slistentry(src.i6ms_cur, "current");
|
|
in6_addr_slistentry(src.i6ms_rec, "recorded");
|
|
in6_addr_slistentry(src.i6ms_in, "included");
|
|
in6_addr_slistentry(src.i6ms_ex, "excluded");
|
|
in6_addr_slistentry(src.i6ms_alw, "allowed");
|
|
in6_addr_slistentry(src.i6ms_blk, "blocked");
|
|
in6_addr_slistentry(src.i6ms_toin, "to-include");
|
|
in6_addr_slistentry(src.i6ms_ex, "to-exclude");
|
|
}
|
|
#endif
|
|
return(multi.in6m_entry.le_next);
|
|
}
|
|
|
|
#ifdef HAVE_MLDV2
|
|
static void
|
|
in6_addr_slistentry(struct in6_addr_slist *ias, char *heading)
|
|
{
|
|
struct in6_addr_slist slist;
|
|
struct i6as_head head;
|
|
struct in6_addr_source src;
|
|
|
|
if (ias == NULL) {
|
|
printf("\t\t\t\t%s (none)\n", heading);
|
|
return;
|
|
}
|
|
memset(&slist, 0, sizeof(slist));
|
|
KREAD(ias, &slist, struct in6_addr_source);
|
|
printf("\t\t\t\t%s (entry num=%d)\n", heading, slist.numsrc);
|
|
if (slist.numsrc == 0) {
|
|
return;
|
|
}
|
|
KREAD(slist.head, &head, struct i6as_head);
|
|
|
|
KREAD(head.lh_first, &src, struct in6_addr_source);
|
|
while (1) {
|
|
printf("\t\t\t\t\tsource %s (ref=%d)\n",
|
|
inet6_n2a(&src.i6as_addr.sin6_addr),
|
|
src.i6as_refcount);
|
|
if (src.i6as_list.le_next == NULL)
|
|
break;
|
|
KREAD(src.i6as_list.le_next, &src, struct in6_addr_source);
|
|
}
|
|
return;
|
|
}
|
|
#endif /* HAVE_MLDV2 */
|
|
|
|
#endif /* INET6 */
|
|
|
|
#ifdef INET
|
|
|
|
static void
|
|
if_addrlist(struct ifaddr *ifap)
|
|
{
|
|
struct ifaddr ifa;
|
|
struct sockaddr sa;
|
|
struct in_ifaddr ia;
|
|
struct ifaddr *ifap0;
|
|
|
|
if (af && af != AF_INET)
|
|
return;
|
|
ifap0 = ifap;
|
|
while (ifap) {
|
|
KREAD(ifap, &ifa, struct ifaddr);
|
|
if (ifa.ifa_addr == NULL)
|
|
goto nextifap;
|
|
KREAD(ifa.ifa_addr, &sa, struct sockaddr);
|
|
if (sa.sa_family != PF_INET)
|
|
goto nextifap;
|
|
KREAD(ifap, &ia, struct in_ifaddr);
|
|
printf("\tinet %s\n", inet_ntoa(ia.ia_addr.sin_addr));
|
|
nextifap:
|
|
ifap = ifa.ifa_link.tqe_next;
|
|
}
|
|
if (ifap0) {
|
|
struct ifnet ifnet;
|
|
struct ifmultiaddr ifm, *ifmp = 0;
|
|
struct sockaddr_dl sdl;
|
|
|
|
KREAD(ifap0, &ifa, struct ifaddr);
|
|
KREAD(ifa.ifa_ifp, &ifnet, struct ifnet);
|
|
if (TAILQ_FIRST(&ifnet.if_multiaddrs))
|
|
ifmp = TAILQ_FIRST(&ifnet.if_multiaddrs);
|
|
while (ifmp) {
|
|
KREAD(ifmp, &ifm, struct ifmultiaddr);
|
|
if (ifm.ifma_addr == NULL)
|
|
goto nextmulti;
|
|
KREAD(ifm.ifma_addr, &sa, struct sockaddr);
|
|
if (sa.sa_family != AF_INET)
|
|
goto nextmulti;
|
|
(void)in_multientry((struct in_multi *)
|
|
ifm.ifma_protospec);
|
|
if (ifm.ifma_lladdr == 0)
|
|
goto nextmulti;
|
|
KREAD(ifm.ifma_lladdr, &sdl, struct sockaddr_dl);
|
|
printf("\t\t\tmcast-macaddr %s refcnt %d\n",
|
|
ether_ntoa((struct ether_addr *)LLADDR(&sdl)),
|
|
ifm.ifma_refcount);
|
|
nextmulti:
|
|
ifmp = TAILQ_NEXT(&ifm, ifma_link);
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct in_multi *
|
|
in_multientry(struct in_multi *mc)
|
|
{
|
|
struct in_multi multi;
|
|
struct router_info rti;
|
|
#ifdef HAVE_IGMPV3
|
|
struct in_multi_source src;
|
|
#endif
|
|
|
|
KREAD(mc, &multi, struct in_multi);
|
|
printf("\t\tgroup %s\n", inet_ntoa(multi.inm_addr));
|
|
|
|
if (multi.inm_rti != NULL) {
|
|
KREAD(multi.inm_rti, &rti, struct router_info);
|
|
printf("\t\t\t");
|
|
switch (rti.rti_type) {
|
|
case IGMP_V1_ROUTER:
|
|
printf("igmpv1");
|
|
break;
|
|
case IGMP_V2_ROUTER:
|
|
printf("igmpv2");
|
|
break;
|
|
#ifdef HAVE_IGMPV3
|
|
case IGMP_V3_ROUTER:
|
|
printf("igmpv3");
|
|
break;
|
|
#endif
|
|
default:
|
|
printf("igmpv?(%d)", rti.rti_type);
|
|
break;
|
|
}
|
|
|
|
#ifdef HAVE_IGMPV3
|
|
if (multi.inm_source == NULL) {
|
|
printf("\n");
|
|
return (multi.inm_list.le_next);
|
|
}
|
|
|
|
KREAD(multi.inm_source, &src, struct in_multi_source);
|
|
printf(" mode=%s grpjoin=%d\n",
|
|
src.ims_mode == MCAST_INCLUDE ? "include" :
|
|
src.ims_mode == MCAST_EXCLUDE ? "exclude" :
|
|
"???",
|
|
src.ims_grpjoin);
|
|
in_addr_slistentry(src.ims_cur, "current");
|
|
in_addr_slistentry(src.ims_rec, "recorded");
|
|
in_addr_slistentry(src.ims_in, "included");
|
|
in_addr_slistentry(src.ims_ex, "excluded");
|
|
in_addr_slistentry(src.ims_alw, "allowed");
|
|
in_addr_slistentry(src.ims_blk, "blocked");
|
|
in_addr_slistentry(src.ims_toin, "to-include");
|
|
in_addr_slistentry(src.ims_ex, "to-exclude");
|
|
#else
|
|
printf("\n");
|
|
#endif
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
#ifdef HAVE_IGMPV3
|
|
static void
|
|
in_addr_slistentry(struct in_addr_slist *ias, char *heading)
|
|
{
|
|
struct in_addr_slist slist;
|
|
struct ias_head head;
|
|
struct in_addr_source src;
|
|
|
|
if (ias == NULL) {
|
|
printf("\t\t\t\t%s (none)\n", heading);
|
|
return;
|
|
}
|
|
memset(&slist, 0, sizeof(slist));
|
|
KREAD(ias, &slist, struct in_addr_source);
|
|
printf("\t\t\t\t%s (entry num=%d)\n", heading, slist.numsrc);
|
|
if (slist.numsrc == 0) {
|
|
return;
|
|
}
|
|
KREAD(slist.head, &head, struct ias_head);
|
|
|
|
KREAD(head.lh_first, &src, struct in_addr_source);
|
|
while (1) {
|
|
printf("\t\t\t\t\tsource %s (ref=%d)\n",
|
|
inet_ntoa(src.ias_addr.sin_addr), src.ias_refcount);
|
|
if (src.ias_list.le_next == NULL)
|
|
break;
|
|
KREAD(src.ias_list.le_next, &src, struct in_addr_source);
|
|
}
|
|
return;
|
|
}
|
|
#endif /* HAVE_IGMPV3 */
|
|
|
|
#endif /* INET */
|
|
|
|
#endif /* WITH_KVM */
|
|
|
|
static int
|
|
ifmcstat_getifmaddrs(void)
|
|
{
|
|
char thisifname[IFNAMSIZ];
|
|
char addrbuf[INET6_ADDRSTRLEN];
|
|
struct ifaddrs *ifap, *ifa;
|
|
struct ifmaddrs *ifmap, *ifma;
|
|
sockunion_t lastifasa;
|
|
sockunion_t *psa, *pgsa, *pllsa, *pifasa;
|
|
char *pcolon;
|
|
char *pafname;
|
|
uint32_t lastifindex, thisifindex;
|
|
int error;
|
|
|
|
error = 0;
|
|
ifap = NULL;
|
|
ifmap = NULL;
|
|
lastifindex = 0;
|
|
thisifindex = 0;
|
|
lastifasa.ss.ss_family = AF_UNSPEC;
|
|
|
|
if (getifaddrs(&ifap) != 0) {
|
|
warn("getifmaddrs");
|
|
return (-1);
|
|
}
|
|
|
|
if (getifmaddrs(&ifmap) != 0) {
|
|
warn("getifmaddrs");
|
|
error = -1;
|
|
goto out;
|
|
}
|
|
|
|
for (ifma = ifmap; ifma; ifma = ifma->ifma_next) {
|
|
error = 0;
|
|
if (ifma->ifma_name == NULL || ifma->ifma_addr == NULL)
|
|
continue;
|
|
|
|
psa = (sockunion_t *)ifma->ifma_name;
|
|
if (psa->sa.sa_family != AF_LINK) {
|
|
fprintf(stderr,
|
|
"WARNING: Kernel returned invalid data.\n");
|
|
error = -1;
|
|
break;
|
|
}
|
|
|
|
/* Filter on interface name. */
|
|
thisifindex = psa->sdl.sdl_index;
|
|
if (ifindex != 0 && thisifindex != ifindex)
|
|
continue;
|
|
|
|
/* Filter on address family. */
|
|
pgsa = (sockunion_t *)ifma->ifma_addr;
|
|
if (af != 0 && pgsa->sa.sa_family != af)
|
|
continue;
|
|
|
|
strlcpy(thisifname, link_ntoa(&psa->sdl), IFNAMSIZ);
|
|
pcolon = strchr(thisifname, ':');
|
|
if (pcolon)
|
|
*pcolon = '\0';
|
|
|
|
/* Only print the banner for the first ifmaddrs entry. */
|
|
if (lastifindex == 0 || lastifindex != thisifindex) {
|
|
lastifindex = thisifindex;
|
|
fprintf(stdout, "%s:\n", thisifname);
|
|
}
|
|
|
|
/*
|
|
* Currently, multicast joins only take place on the
|
|
* primary IPv4 address, and only on the link-local IPv6
|
|
* address, as per IGMPv2/3 and MLDv1/2 semantics.
|
|
* Therefore, we only look up the primary address on
|
|
* the first pass.
|
|
*/
|
|
pifasa = NULL;
|
|
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
|
|
if ((strcmp(ifa->ifa_name, thisifname) != 0) ||
|
|
(ifa->ifa_addr == NULL) ||
|
|
(ifa->ifa_addr->sa_family != pgsa->sa.sa_family))
|
|
continue;
|
|
#ifdef INET6
|
|
/*
|
|
* For AF_INET6 only the link-local address should
|
|
* be returned.
|
|
* XXX: ifmcstat actually prints all of the inet6
|
|
* addresses, but never mind...
|
|
*/
|
|
pifasa = (sockunion_t *)ifa->ifa_addr;
|
|
if (pifasa->sa.sa_family == AF_INET6 &&
|
|
!IN6_IS_ADDR_LINKLOCAL(&pifasa->sin6.sin6_addr)) {
|
|
pifasa = NULL;
|
|
continue;
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
if (pifasa == NULL)
|
|
continue; /* primary address not found */
|
|
|
|
/* Parse and print primary address, if not already printed. */
|
|
if (lastifasa.ss.ss_family == AF_UNSPEC ||
|
|
((lastifasa.ss.ss_family == AF_LINK &&
|
|
!sa_dl_equal(&lastifasa.sa, &pifasa->sa)) ||
|
|
!sa_equal(&lastifasa.sa, &pifasa->sa))) {
|
|
|
|
switch (pifasa->sa.sa_family) {
|
|
case AF_INET:
|
|
pafname = "inet";
|
|
break;
|
|
case AF_INET6:
|
|
pafname = "inet6";
|
|
break;
|
|
case AF_LINK:
|
|
pafname = "link";
|
|
break;
|
|
default:
|
|
pafname = "unknown";
|
|
break;
|
|
}
|
|
|
|
switch (pifasa->sa.sa_family) {
|
|
case AF_INET:
|
|
case AF_INET6:
|
|
case AF_LINK:
|
|
error = getnameinfo(&pifasa->sa,
|
|
pifasa->sa.sa_len,
|
|
addrbuf, sizeof(addrbuf), NULL, 0,
|
|
NI_NUMERICHOST);
|
|
if (error)
|
|
perror("getnameinfo");
|
|
break;
|
|
default:
|
|
addrbuf[0] = '\0';
|
|
break;
|
|
}
|
|
|
|
fprintf(stdout, "\t%s %s\n", pafname, addrbuf);
|
|
lastifasa = *pifasa;
|
|
}
|
|
|
|
/* Print this group address. */
|
|
error = getnameinfo(&pgsa->sa, pgsa->sa.sa_len, addrbuf,
|
|
sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
|
|
if (error)
|
|
perror("getnameinfo");
|
|
fprintf(stdout, "\t\tgroup %s\n", addrbuf);
|
|
|
|
/* Link-layer mapping, if present. */
|
|
pllsa = (sockunion_t *)ifma->ifma_lladdr;
|
|
if (pllsa != NULL) {
|
|
error = getnameinfo(&pifasa->sa, pifasa->sa.sa_len,
|
|
addrbuf, sizeof(addrbuf), NULL, 0, NI_NUMERICHOST);
|
|
fprintf(stdout, "\t\t\tmcast-macaddr %s\n", addrbuf);
|
|
}
|
|
}
|
|
out:
|
|
if (ifmap != NULL)
|
|
freeifmaddrs(ifmap);
|
|
if (ifap != NULL)
|
|
freeifaddrs(ifap);
|
|
|
|
return (error);
|
|
}
|