add -a flag: automatically probe an interface, works only if there's
only single external non-p2p interface. idea from thopej. $KAME$. (sync with kame)
This commit is contained in:
itojun
parent
4915bd101e
commit
ba6d02ed0c
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@ -1,4 +1,5 @@
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/* $NetBSD: dump.c,v 1.2 2000/02/25 09:19:07 itojun Exp $ */
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/* $NetBSD: dump.c,v 1.3 2000/08/13 06:20:02 itojun Exp $ */
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/* $KAME: dump.c,v 1.7 2000/08/13 06:14:59 itojun Exp $ */
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/*
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* Copyright (C) 1999 WIDE Project.
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@ -1,4 +1,5 @@
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/* $NetBSD: if.c,v 1.5 2000/02/25 09:19:07 itojun Exp $ */
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/* $NetBSD: if.c,v 1.6 2000/08/13 06:20:02 itojun Exp $ */
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/* $KAME: if.c,v 1.13 2000/08/13 06:14:59 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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@ -33,6 +34,7 @@
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/ioctl.h>
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#include <sys/queue.h>
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#include <net/if.h>
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#if defined(__FreeBSD__) && __FreeBSD__ >= 3
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@ -1,4 +1,5 @@
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/* $NetBSD: probe.c,v 1.4 2000/02/28 07:20:43 itojun Exp $ */
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/* $NetBSD: probe.c,v 1.5 2000/08/13 06:20:02 itojun Exp $ */
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/* $KAME: probe.c,v 1.10 2000/08/13 06:14:59 itojun Exp $ */
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/*
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* Copyright (C) 1998 WIDE Project.
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@ -34,6 +35,7 @@
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <sys/queue.h>
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#include <net/if.h>
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#if defined(__FreeBSD__) && __FreeBSD__ >= 3
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@ -1,4 +1,5 @@
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/* $NetBSD: rtsol.c,v 1.6 2000/02/28 07:20:44 itojun Exp $ */
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/* $NetBSD: rtsol.c,v 1.7 2000/08/13 06:20:03 itojun Exp $ */
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/* $KAME: rtsol.c,v 1.11 2000/08/13 06:14:59 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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@ -33,6 +34,7 @@
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <sys/time.h>
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#include <sys/queue.h>
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#include <net/if.h>
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#include <net/route.h>
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@ -1,6 +1,9 @@
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.\" $NetBSD: rtsold.8,v 1.8 2000/08/13 06:20:03 itojun Exp $
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.\" $KAME: rtsold.8,v 1.12 2000/08/13 06:17:59 itojun Exp $
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.\"
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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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.\"
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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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@ -12,7 +15,7 @@
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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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.\"
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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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@ -25,9 +28,6 @@
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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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.\" $NetBSD: rtsold.8,v 1.7 2000/01/02 06:30:15 itojun Exp $
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.\" KAME Id: rtsold.8,v 1.8 2000/01/02 06:25:14 itojun Exp
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.\"
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.Dd May 17, 1998
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.Dt RTSOLD 8
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.Os
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@ -40,12 +40,18 @@
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.Nm
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.Op Fl dDfm1
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.Ar interface ...
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.Nm ""
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.Op Fl dDfm1
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.Fl a
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.Nm rtsol
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.Op Fl dD
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.Ar interface ...
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.Nm rtsol
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.Op Fl dD
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.Fl a
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.\"
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.Sh DESCRIPTION
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.Nm Rtsold
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.Nm
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is the daemon program to send ICMPv6 Router Solicitation messages
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on the specified interfaces.
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If a node (re)attaches to a link,
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@ -80,7 +86,7 @@ Just after invocation of
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daemon.
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.It
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The interface is up after a temporary interface failure.
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.Nm Rtsold
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.Nm
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detects such failures by periodically probing to see if the status
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of the interface is active or not.
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Note that some network cards and drivers do not allow the extraction
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@ -122,6 +128,15 @@ will dump the current internal state into
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.\"
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.Sh OPTIONS
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.Bl -tag -width indent
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.It Fl a
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Autoprobe outgoing interface.
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.Nm
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will try to find a non-loopback, non-p2p and IPv6-capable, interface.
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If
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.Nm
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finds multiple interfaces, it will fail.
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This is because IPv6 specification talks about single interface node,
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in autoconfiguration spec.
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.\"
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.It Fl d
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Enable debugging.
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@ -177,5 +192,16 @@ command, which first appeared in WIDE/KAME IPv6 protocol stack kit.
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.Nm rtsol
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is now integrated into
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.Xr rtsold 8 .
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.\" .Sh BUGS
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.\" (to be written)
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.\"
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.Sh BUGS
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In some operating systems, when a PCMCIA network card is removed
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and reinserted, the corresponding interface index is changed.
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However,
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.Nm
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does not assume such changes, and always uses the index that
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it got at invocation. As a result,
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.Nm
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may not work if you reinsert a network card.
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In such a case,
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.Nm
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should be killed and restarted.
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@ -1,4 +1,5 @@
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/* $NetBSD: rtsold.c,v 1.6 2000/02/25 09:19:08 itojun Exp $ */
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/* $NetBSD: rtsold.c,v 1.7 2000/08/13 06:20:03 itojun Exp $ */
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/* $KAME: rtsold.c,v 1.22 2000/08/13 06:14:59 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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@ -48,11 +49,13 @@
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#include <errno.h>
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#include <err.h>
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#include <stdarg.h>
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#include <ifaddrs.h>
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#include "rtsold.h"
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struct ifinfo *iflist;
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struct timeval tm_max = {0x7fffffff, 0x7fffffff};
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int dflag;
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int aflag = 0;
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int dflag = 0;
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static int log_upto = 999;
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static int fflag = 0;
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@ -99,6 +102,7 @@ static void TIMEVAL_SUB __P((struct timeval *a, struct timeval *b,
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static void rtsold_set_dump_file __P((void));
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static void usage __P((char *progname));
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static char **autoifprobe __P((void));
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int
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main(argc, argv)
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@ -121,35 +125,60 @@ main(argc, argv)
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if (argv0 && argv0[strlen(argv0) - 1] != 'd') {
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fflag = 1;
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once = 1;
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opts = "dD";
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opts = "adD";
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} else
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opts = "dDfm1";
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opts = "adDfm1";
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while ((ch = getopt(argc, argv, opts)) != -1) {
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switch(ch) {
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case 'd':
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dflag = 1;
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break;
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case 'D':
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dflag = 2;
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break;
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case 'f':
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fflag = 1;
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break;
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case 'm':
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mobile_node = 1;
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break;
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case '1':
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once = 1;
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break;
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default:
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usage(argv0);
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switch (ch) {
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case 'a':
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aflag = 1;
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break;
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case 'd':
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dflag = 1;
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break;
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case 'D':
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dflag = 2;
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break;
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case 'f':
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fflag = 1;
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break;
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case 'm':
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mobile_node = 1;
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break;
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case '1':
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once = 1;
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break;
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default:
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usage(argv0);
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/*NOTREACHED*/
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}
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}
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argc -= optind;
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argv += optind;
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if (argc == 0)
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if (aflag) {
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int i;
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if (argc != 0) {
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usage(argv0);
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/*NOTREACHED*/
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}
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argv = autoifprobe();
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if (!argv) {
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errx(1, "could not autoprobe interface");
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/*NOTREACHED*/
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}
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for (i = 0; argv[i]; i++)
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;
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argc = i;
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}
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if (argc == 0) {
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usage(argv0);
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/*NOTREACHED*/
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}
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/* set log level */
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if (dflag == 0)
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@ -176,29 +205,39 @@ main(argc, argv)
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warnx("kernel is configured not to accept RAs");
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/* initialization to dump internal status to a file */
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if (signal(SIGUSR1, (void *)rtsold_set_dump_file) < 0)
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if (signal(SIGUSR1, (void *)rtsold_set_dump_file) < 0) {
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errx(1, "failed to set signal for dump status");
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/*NOTREACHED*/
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}
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/*
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* Open a socket for sending RS and receiving RA.
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* This should be done before calling ifinit(), since the function
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* uses the socket.
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*/
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if ((s = sockopen()) < 0)
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if ((s = sockopen()) < 0) {
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errx(1, "failed to open a socket");
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/*NOTREACHED*/
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}
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/* configuration per interface */
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if (ifinit())
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if (ifinit()) {
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errx(1, "failed to initilizatoin interfaces");
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/*NOTREACHED*/
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}
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while (argc--) {
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if (ifconfig(*argv))
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if (ifconfig(*argv)) {
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errx(1, "failed to initialize %s", *argv);
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/*NOTREACHED*/
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}
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argv++;
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}
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/* setup for probing default routers */
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if (probe_init())
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if (probe_init()) {
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errx(1, "failed to setup for probing routers");
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/*NOTREACHED*/
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}
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if (!fflag)
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daemon(0, 0); /* act as a daemon */
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"state = %d", ifinfo->ifname,
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ifinfo->state);
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switch(ifinfo->state) {
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switch (ifinfo->state) {
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case IFS_DOWN:
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case IFS_TENTATIVE:
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/* interface_up returns 0 on success */
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@ -630,10 +669,13 @@ rtsold_set_dump_file()
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static void
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usage(char *progname)
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{
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if (progname && progname[strlen(progname) - 1] != 'd')
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fprintf(stderr, "usage: rtsol [-dD] interfaces\n");
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else
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fprintf(stderr, "usage: rtsold [-dDfm1] interfaces\n");
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if (progname && progname[strlen(progname) - 1] != 'd') {
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fprintf(stderr, "usage: rtsol [-dD] interfaces...\n");
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fprintf(stderr, "usage: rtsol [-dD] -a\n");
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} else {
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fprintf(stderr, "usage: rtsold [-adDfm1] interfaces...\n");
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fprintf(stderr, "usage: rtsold [-dDfm1] -a\n");
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}
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exit(1);
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}
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@ -663,3 +705,58 @@ warnmsg(priority, func, msg, va_alist)
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}
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va_end(ap);
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}
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static char **
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autoifprobe()
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{
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static char ifname[IFNAMSIZ + 1];
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static char *argv[2];
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struct ifaddrs *ifap, *ifa, *target;
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if (getifaddrs(&ifap) != 0)
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return NULL;
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target = NULL;
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/* find an ethernet */
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for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
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if ((ifa->ifa_flags & IFF_UP) == 0)
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continue;
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if ((ifa->ifa_flags & IFF_POINTOPOINT) != 0)
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continue;
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if ((ifa->ifa_flags & IFF_LOOPBACK) != 0)
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continue;
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if ((ifa->ifa_flags & IFF_MULTICAST) == 0)
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continue;
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if (ifa->ifa_addr->sa_family != AF_INET6)
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continue;
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if (target && strcmp(target->ifa_name, ifa->ifa_name) == 0)
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continue;
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if (!target)
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target = ifa;
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else {
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/* if we find multiple candidates, failure. */
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if (dflag > 1)
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warnx("multiple interfaces found");
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target = NULL;
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break;
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}
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}
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if (target) {
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strncpy(ifname, target->ifa_name, sizeof(ifname) - 1);
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ifname[sizeof(ifname) - 1] = '\0';
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argv[0] = ifname;
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argv[1] = NULL;
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if (dflag > 0)
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warnx("probing %s", argv[0]);
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}
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freeifaddrs(ifap);
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if (target)
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return argv;
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else
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return (char **)NULL;
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}
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@ -1,4 +1,5 @@
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/* $NetBSD: rtsold.h,v 1.4 2000/02/25 09:19:10 itojun Exp $ */
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/* $NetBSD: rtsold.h,v 1.5 2000/08/13 06:20:03 itojun Exp $ */
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/* $KAME: rtsold.h,v 1.9 2000/08/13 06:15:00 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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