2 * Copyright (c) 1983, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgment:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * $FreeBSD: src/sbin/routed/trace.c,v 1.5.2.1 2002/11/07 17:19:13 imp Exp $
34 * $DragonFly: src/sbin/routed/trace.c,v 1.3 2004/12/18 21:43:40 swildner Exp $
39 #include "pathnames.h"
41 #include <sys/signal.h>
44 #if !defined(sgi) && !defined(__NetBSD__)
45 static char sccsid[] __attribute__((unused)) = "@(#)trace.c 8.1 (Berkeley) 6/5/93";
46 #elif defined(__NetBSD__)
49 #ident "$FreeBSD: src/sbin/routed/trace.c,v 1.5.2.1 2002/11/07 17:19:13 imp Exp $"
53 /* use *stat64 for files on large filesystems */
57 #define NRECORDS 50 /* size of circular trace buffer */
59 int tracelevel, new_tracelevel;
60 FILE *ftrace; /* output trace file */
61 static const char *sigtrace_pat = "%s";
62 static char savetracename[MAXPATHLEN+1];
63 char inittracename[MAXPATHLEN+1];
64 int file_trace; /* 1=tracing to file, not stdout */
66 static void trace_dump(void);
67 static void tmsg(const char *, ...) PATTRIB(1,2);
70 /* convert string to printable characters
73 qstring(u_char *s, int len)
75 static char buf[8*20+1];
80 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) {
83 for (s2 = s+1; s2 < &s[len]; s2++) {
91 if (c >= ' ' && c < 0x7f && c != '\\') {
113 p += sprintf(p,"%o",c);
123 /* convert IP address to a string, but not into a single buffer
131 char str[16]; /* xxx.xxx.xxx.xxx\0 */
137 s = strcpy(bufs[bufno].str, inet_ntoa(addr));
138 bufno = (bufno+1) % NUM_BUFS;
145 saddr_ntoa(struct sockaddr *sa)
147 return (sa == 0) ? "?" : naddr_ntoa(S_ADDR(sa));
155 secs += epoch.tv_sec;
157 cftime(s, "%T", &secs);
159 memcpy(s, ctime(&secs)+11, 8);
166 /* On each event, display a time stamp.
167 * This assumes that 'now' is update once for each event, and
168 * that at least now.tv_usec changes.
170 static struct timeval lastlog_time;
175 if (lastlog_time.tv_sec != now.tv_sec
176 || lastlog_time.tv_usec != now.tv_usec) {
177 fprintf(ftrace, "-- %s --\n", ts(now.tv_sec));
184 tmsg(const char *p, ...)
191 vfprintf(ftrace, p, args);
199 trace_close(int zap_stdio)
207 if (ftrace != 0 && zap_stdio) {
208 if (ftrace != stdout)
211 fd = open(_PATH_DEVNULL, O_RDWR);
212 if (isatty(STDIN_FILENO))
213 dup2(fd, STDIN_FILENO);
214 if (isatty(STDOUT_FILENO))
215 dup2(fd, STDOUT_FILENO);
216 if (isatty(STDERR_FILENO))
217 dup2(fd, STDERR_FILENO);
220 lastlog_time.tv_sec = 0;
230 trace_off("tracing off: %s", strerror(ferror(ftrace)));
236 trace_off(const char *p, ...)
244 vfprintf(ftrace, p, args);
247 trace_close(file_trace);
249 new_tracelevel = tracelevel = 0;
253 /* log a change in tracing
256 tracelevel_msg(const char *pat,
257 int dump) /* -1=no dump, 0=default, 1=force */
259 static const char *off_msgs[MAX_TRACELEVEL] = {
260 "Tracing actions stopped",
261 "Tracing packets stopped",
262 "Tracing packet contents stopped",
263 "Tracing kernel changes stopped",
265 static const char *on_msgs[MAX_TRACELEVEL] = {
266 "Tracing actions started",
267 "Tracing packets started",
268 "Tracing packet contents started",
269 "Tracing kernel changes started",
271 u_int old_tracelevel = tracelevel;
274 if (new_tracelevel < 0)
276 else if (new_tracelevel > MAX_TRACELEVEL)
277 new_tracelevel = MAX_TRACELEVEL;
279 if (new_tracelevel < tracelevel) {
280 if (new_tracelevel <= 0) {
281 trace_off(pat, off_msgs[0]);
283 tmsg(pat, off_msgs[tracelevel]);
285 while (--tracelevel != new_tracelevel);
287 } else if (new_tracelevel > tracelevel) {
289 tmsg(pat, on_msgs[tracelevel++]);
290 } while (tracelevel != new_tracelevel);
294 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0))
300 set_tracefile(const char *filename,
302 int dump) /* -1=no dump, 0=default, 1=force */
309 /* Allow a null filename to increase the level if the trace file
310 * is already open or if coming from a trusted source, such as
311 * a signal or the command line.
313 if (filename == 0 || filename[0] == '\0') {
316 if (inittracename[0] == '\0') {
317 msglog("missing trace file name");
325 } else if (!strcmp(filename,"dump/../table")) {
330 /* Allow the file specified with "-T file" to be reopened,
331 * but require all other names specified over the net to
332 * match the official path. The path can specify a directory
333 * in which the file is to be created.
335 if (strcmp(filename, inittracename)
337 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1)
338 || strstr(filename,"../")
339 || 0 > stat(_PATH_TRACE, &stbuf))
342 msglog("wrong trace file \"%s\"", filename);
346 /* If the new tracefile exists, it must be a regular file.
348 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) {
349 msglog("wrong type (%#x) of trace file \"%s\"",
350 stbuf.st_mode, filename);
358 n_ftrace = fopen(fn, "a");
360 msglog("failed to open trace file \"%s\" %s",
361 fn, strerror(errno));
362 if (fn == inittracename)
363 inittracename[0] = '\0';
367 tmsg("switch to trace file %s", fn);
369 trace_close(file_trace = 1);
371 if (fn != savetracename)
372 strncpy(savetracename, fn, sizeof(savetracename)-1);
377 dup2(fileno(ftrace), STDOUT_FILENO);
378 dup2(fileno(ftrace), STDERR_FILENO);
381 if (new_tracelevel == 0 || filename == 0)
383 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0));
389 sigtrace_on(int s UNUSED)
392 sigtrace_pat = "SIGUSR1: %s";
398 sigtrace_off(int s UNUSED)
401 sigtrace_pat = "SIGUSR2: %s";
405 /* Set tracing after a signal.
410 if (new_tracelevel == tracelevel)
413 /* If tracing entirely off, and there was no tracefile specified
414 * on the command line, then leave it off.
416 if (new_tracelevel > tracelevel && ftrace == 0) {
417 if (savetracename[0] != '\0') {
418 set_tracefile(savetracename,sigtrace_pat,0);
419 } else if (inittracename[0] != '\0') {
420 set_tracefile(inittracename,sigtrace_pat,0);
426 tracelevel_msg(sigtrace_pat, 0);
431 /* display an address
434 addrname(naddr addr, /* in network byte order */
436 int force) /* 0=show mask if nonstandard, */
437 { /* 1=always show mask, 2=never */
447 s = strcpy(bufs[bufno].str, naddr_ntoa(addr));
448 bufno = (bufno+1) % NUM_BUFS;
450 if (force == 1 || (force == 0 && mask != std_mask(addr))) {
453 dmask = mask & -mask;
454 if (mask + dmask == 0) {
455 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++)
457 sprintf(sp, "/%d", 32-i);
460 sprintf(sp, " (mask %#x)", (u_int)mask);
469 /* display a bit-field
474 const char *bits_name;
477 static struct bits if_bits[] = {
478 { IFF_LOOPBACK, 0, "LOOPBACK" },
479 { IFF_POINTOPOINT, 0, "PT-TO-PT" },
483 static struct bits is_bits[] = {
484 { IS_ALIAS, 0, "ALIAS" },
485 { IS_SUBNET, 0, "" },
486 { IS_REMOTE, (IS_NO_RDISC
487 | IS_BCAST_RDISC), "REMOTE" },
488 { IS_PASSIVE, (IS_NO_RDISC
492 | IS_NO_AG), "PASSIVE" },
493 { IS_EXTERNAL, 0, "EXTERNAL" },
494 { IS_CHECKED, 0, "" },
495 { IS_ALL_HOSTS, 0, "" },
496 { IS_ALL_ROUTERS, 0, "" },
497 { IS_DISTRUST, 0, "DISTRUST" },
498 { IS_BROKE, IS_SICK, "BROKEN" },
499 { IS_SICK, 0, "SICK" },
500 { IS_DUP, 0, "DUPLICATE" },
501 { IS_REDIRECT_OK, 0, "REDIRECT_OK" },
502 { IS_NEED_NET_SYN, 0, "" },
503 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" },
504 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" },
508 | IS_NO_RIPV2_OUT), 0, "NO_RIP" },
510 | IS_NO_RIPV1_OUT), 0, "RIPV2" },
511 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" },
512 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" },
513 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" },
514 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" },
517 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" },
518 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" },
519 { IS_SOL_OUT, 0, "SEND_SOLICIT" },
520 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" },
521 { IS_ADV_OUT, 0, "RDISC_ADV" },
522 { IS_BCAST_RDISC, 0, "BCAST_RDISC" },
523 { IS_PM_RDISC, 0, "" },
527 static struct bits rs_bits[] = {
529 { RS_NET_INT, RS_NET_SYN, "NET_INT" },
530 { RS_NET_SYN, 0, "NET_SYN" },
531 { RS_SUBNET, 0, "" },
532 { RS_LOCAL, 0, "LOCAL" },
533 { RS_MHOME, 0, "MHOME" },
534 { RS_STATIC, 0, "STATIC" },
535 { RS_RDISC, 0, "RDISC" },
541 trace_bits(const struct bits *tbl,
556 && (b = tbl->bits_mask) != 0) {
557 if ((b & field) == b) {
558 if (tbl->bits_name[0] != '\0') {
561 fprintf(ftrace, "%s", tbl->bits_name);
564 if (0 == (field &= ~(b | tbl->bits_clear)))
569 if (field != 0 && tbl->bits_name != 0) {
572 fprintf(ftrace, tbl->bits_name, field);
576 if (c != '<' || force)
586 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */
587 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */
590 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0));
591 sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate));
597 print_rts(struct rt_spare *rts,
598 int force_metric, /* -1=suppress, 0=default */
599 int force_ifp, /* -1=suppress, 0=default */
600 int force_router, /* -1=suppress, 0=default, 1=display */
601 int force_tag, /* -1=suppress, 0=default, 1=display */
602 int force_time) /* 0=suppress, 1=display */
607 if (force_metric >= 0)
608 fprintf(ftrace, "metric=%-2d ", rts->rts_metric);
610 fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ?
611 "if?" : rts->rts_ifp->int_name));
613 || (force_router == 0 && rts->rts_router != rts->rts_gate))
614 fprintf(ftrace, "router=%s ", naddr_ntoa(rts->rts_router));
616 fprintf(ftrace, "%s ", ts(rts->rts_time));
618 || (force_tag == 0 && rts->rts_tag != 0))
619 fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag));
620 if (rts->rts_de_ag != 0) {
621 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++)
623 fprintf(ftrace, "de_ag=%d ", i);
630 trace_if(const char *act,
631 struct interface *ifp)
633 if (!TRACEACTIONS || ftrace == 0)
637 fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name);
638 fprintf(ftrace, "%-15s-->%-15s ",
639 naddr_ntoa(ifp->int_addr),
640 addrname(((ifp->int_if_flags & IFF_POINTOPOINT)
641 ? ifp->int_dstaddr : htonl(ifp->int_net)),
643 if (ifp->int_metric != 0)
644 fprintf(ftrace, "metric=%d ", ifp->int_metric);
645 if (!IS_RIP_OUT_OFF(ifp->int_state)
646 && ifp->int_d_metric != 0)
647 fprintf(ftrace, "fake_default=%d ", ifp->int_d_metric);
648 trace_bits(if_bits, ifp->int_if_flags, 0);
649 trace_bits(is_bits, ifp->int_state, 0);
655 trace_upslot(struct rt_entry *rt,
656 struct rt_spare *rts,
657 struct rt_spare *new)
659 if (!TRACEACTIONS || ftrace == 0)
662 if (rts->rts_gate == new->rts_gate
663 && rts->rts_router == new->rts_router
664 && rts->rts_metric == new->rts_metric
665 && rts->rts_tag == new->rts_tag
666 && rts->rts_de_ag == new->rts_de_ag)
670 if (new->rts_gate == 0) {
671 fprintf(ftrace, "Del #%d %-35s ",
672 (int)(rts - rt->rt_spares),
673 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate));
674 print_rts(rts, 0,0,0,0,
675 (rts != rt->rt_spares
676 || AGE_RT(rt->rt_state,new->rts_ifp)));
678 } else if (rts->rts_gate != RIP_DEFAULT) {
679 fprintf(ftrace, "Chg #%d %-35s ",
680 (int)(rts - rt->rt_spares),
681 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate));
683 rts->rts_gate != new->rts_gate,
684 rts->rts_tag != new->rts_tag,
685 rts != rt->rt_spares || AGE_RT(rt->rt_state,
688 fprintf(ftrace, "\n %19s%-16s ", "",
689 (new->rts_gate != rts->rts_gate
690 ? naddr_ntoa(new->rts_gate) : ""));
692 -(new->rts_metric == rts->rts_metric),
693 -(new->rts_ifp == rts->rts_ifp),
695 rts->rts_tag != new->rts_tag,
696 (new->rts_time != rts->rts_time
697 && (rts != rt->rt_spares
698 || AGE_RT(rt->rt_state, new->rts_ifp))));
701 fprintf(ftrace, "Add #%d %-35s ",
702 (int)(rts - rt->rt_spares),
703 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate));
704 print_rts(new, 0,0,0,0,
705 (rts != rt->rt_spares
706 || AGE_RT(rt->rt_state,new->rts_ifp)));
712 /* miscellaneous message checked by the caller
715 trace_misc(const char *p, ...)
724 vfprintf(ftrace, p, args);
729 /* display a message if tracing actions
732 trace_act(const char *p, ...)
736 if (!TRACEACTIONS || ftrace == 0)
741 vfprintf(ftrace, p, args);
746 /* display a message if tracing packets
749 trace_pkt(const char *p, ...)
753 if (!TRACEPACKETS || ftrace == 0)
758 vfprintf(ftrace, p, args);
764 trace_change(struct rt_entry *rt,
766 struct rt_spare *new,
772 if (rt->rt_metric == new->rts_metric
773 && rt->rt_gate == new->rts_gate
774 && rt->rt_router == new->rts_router
775 && rt->rt_state == state
776 && rt->rt_tag == new->rts_tag
777 && rt->rt_de_ag == new->rts_de_ag)
781 fprintf(ftrace, "%s %-35s ",
782 label, rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate));
783 print_rts(rt->rt_spares,
784 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp));
785 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state);
787 fprintf(ftrace, "\n%*s %19s%-16s ",
788 (int)strlen(label), "", "",
789 (rt->rt_gate != new->rts_gate
790 ? naddr_ntoa(new->rts_gate) : ""));
792 -(new->rts_metric == rt->rt_metric),
793 -(new->rts_ifp == rt->rt_ifp),
795 rt->rt_tag != new->rts_tag,
796 (rt->rt_time != new->rts_time
797 && AGE_RT(rt->rt_state,new->rts_ifp)));
798 if (rt->rt_state != state)
799 trace_bits(rs_bits, state, 1);
805 trace_add_del(const char * action, struct rt_entry *rt)
811 fprintf(ftrace, "%s %-35s ",
812 action, rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate));
813 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp));
814 trace_bits(rs_bits, rt->rt_state, 0);
821 walk_trace(struct radix_node *rn,
822 struct walkarg *w UNUSED)
824 #define RT ((struct rt_entry *)rn)
825 struct rt_spare *rts;
828 fprintf(ftrace, " %-35s ",
829 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate));
830 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp));
831 trace_bits(rs_bits, RT->rt_state, 0);
832 if (RT->rt_poison_time >= now_garbage
833 && RT->rt_poison_metric < RT->rt_metric)
834 fprintf(ftrace, "pm=%d@%s",
835 RT->rt_poison_metric, ts(RT->rt_poison_time));
837 rts = &RT->rt_spares[1];
838 for (i = 1; i < NUM_SPARES; i++, rts++) {
839 if (rts->rts_gate != RIP_DEFAULT) {
840 fprintf(ftrace,"\n #%d%15s%-16s ",
841 i, "", naddr_ntoa(rts->rts_gate));
842 print_rts(rts, 0,0,0,0,1);
854 struct interface *ifp;
860 fputs("current daemon state:\n", ftrace);
861 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next)
863 rn_walktree(rhead, walk_trace, 0);
868 trace_rip(const char *dir1, const char *dir2,
869 struct sockaddr_in *who,
870 struct interface *ifp,
872 int size) /* total size of message */
874 struct netinfo *n, *lim;
875 # define NA ((struct netauth*)n)
878 if (!TRACEPACKETS || ftrace == 0)
882 if (msg->rip_cmd >= RIPCMD_MAX
883 || msg->rip_vers == 0) {
884 fprintf(ftrace, "%s bad RIPv%d cmd=%d %s"
886 dir1, msg->rip_vers, msg->rip_cmd, dir2,
887 naddr_ntoa(who->sin_addr.s_addr),
888 ntohs(who->sin_port),
893 fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n",
894 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2,
895 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port),
896 ifp ? " via " : "", ifp ? ifp->int_name : "");
901 switch (msg->rip_cmd) {
903 case RIPCMD_RESPONSE:
905 lim = (struct netinfo *)((char*)msg + size);
906 for (; n < lim; n++) {
908 && n->n_family == RIP_AF_UNSPEC
909 && ntohl(n->n_metric) == HOPCNT_INFINITY
910 && msg->rip_cmd == RIPCMD_REQUEST
913 && (n+1)->n_family == RIP_AF_AUTH))) {
914 fputs("\tQUERY ", ftrace);
916 fprintf(ftrace, "%s ",
917 naddr_ntoa(n->n_dst));
919 fprintf(ftrace, "mask=%#x ",
920 (u_int)ntohl(n->n_mask));
922 fprintf(ftrace, "nhop=%s ",
923 naddr_ntoa(n->n_nhop));
925 fprintf(ftrace, "tag=%#x ",
931 if (n->n_family == RIP_AF_AUTH) {
932 if (NA->a_type == RIP_AUTH_PW
933 && n == msg->rip_nets) {
934 fprintf(ftrace, "\tPassword"
937 qstring(NA->au.au_pw,
942 if (NA->a_type == RIP_AUTH_MD5
943 && n == msg->rip_nets) {
946 " pkt_len=%d KeyID=%u"
950 ntohs(NA->au.a_md5.md5_pkt_len),
951 NA->au.a_md5.md5_keyid,
952 NA->au.a_md5.md5_auth_len,
953 (int)ntohl(NA->au.a_md5.md5_seqno),
954 (int)ntohs(NA->au.a_md5.rsvd[0]),
955 (int)ntohs(NA->au.a_md5.rsvd[1]));
959 "\tAuthentication type %d: ",
962 i < (int)sizeof(NA->au.au_pw);
964 fprintf(ftrace, "%02x ",
971 if (n->n_family != RIP_AF_INET) {
973 "\t(af %d) %-18s mask=%#x ",
975 naddr_ntoa(n->n_dst),
976 (u_int)ntohl(n->n_mask));
977 } else if (msg->rip_vers == RIPv1) {
978 fprintf(ftrace, "\t%-18s ",
979 addrname(n->n_dst, ntohl(n->n_mask),
980 n->n_mask==0 ? 2 : 1));
982 fprintf(ftrace, "\t%-18s ",
983 addrname(n->n_dst, ntohl(n->n_mask),
984 n->n_mask==0 ? 2 : 0));
986 fprintf(ftrace, "metric=%-2d ",
987 (u_int)ntohl(n->n_metric));
989 fprintf(ftrace, " nhop=%s ",
990 naddr_ntoa(n->n_nhop));
992 fprintf(ftrace, "tag=%#x", ntohs(n->n_tag));
995 if (size != (char *)n - (char *)msg)
996 fprintf(ftrace, "truncated record, len %d\n", size);
1000 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4,
1001 msg->rip_tracefile);
1004 case RIPCMD_TRACEOFF: