2 * Copyright (c) 1983, 1988, 1993
3 * 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 acknowledgement:
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
35 char const copyright[] =
36 "@(#) Copyright (c) 1983, 1988, 1993\n\
37 Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94";
44 static const char rcsid[] =
45 "$FreeBSD: src/usr.bin/netstat/main.c,v 1.34.2.12 2001/09/17 15:17:46 ru Exp $";
48 #include <sys/param.h>
50 #include <sys/protosw.h>
51 #include <sys/socket.h>
53 #include <netinet/in.h>
55 #include <netgraph/ng_socket.h>
71 static struct nlist nl[] = {
104 #define N_CLTPSTAT 16
112 #define N_MFCTABLE 20
114 #define N_VIFTABLE 21
130 #define N_ICMP6STAT 29
132 #define N_IPSECSTAT 30
134 #define N_IPSEC6STAT 31
136 #define N_PIM6STAT 32
138 #define N_MRT6PROTO 33
140 #define N_MRT6STAT 34
142 #define N_MF6CTABLE 35
144 #define N_MIF6TABLE 36
146 #define N_PFKEYSTAT 37
152 #define N_NMBCLUSTERS 40
162 u_char pr_index; /* index into nlist of cb head */
163 u_char pr_sindex; /* index into nlist of stat block */
164 u_char pr_wanted; /* 1 if wanted, 0 otherwise */
165 void (*pr_cblocks)(u_long, char *, int);
166 /* control blocks printing routine */
167 void (*pr_stats)(u_long, char *, int);
168 /* statistics printing routine */
169 void (*pr_istats)(char *); /* per/if statistics printing routine */
170 char *pr_name; /* well-known name */
171 int pr_usesysctl; /* true if we use sysctl, not kvm */
173 { -1, -1, 1, protopr,
174 tcp_stats, NULL, "tcp", IPPROTO_TCP },
175 { -1, -1, 1, protopr,
176 udp_stats, NULL, "udp", IPPROTO_UDP },
177 { -1, -1, 1, protopr,
178 NULL, NULL, "divert",IPPROTO_DIVERT },
179 { -1, -1, 1, protopr,
180 ip_stats, NULL, "ip", IPPROTO_RAW },
181 { -1, -1, 1, protopr,
182 icmp_stats, NULL, "icmp", IPPROTO_ICMP },
183 { -1, -1, 1, protopr,
184 igmp_stats, NULL, "igmp", IPPROTO_IGMP },
186 { -1, N_IPSECSTAT, 1, 0,
187 ipsec_stats, NULL, "ipsec", 0},
190 bdg_stats, NULL, "bdg", 1 /* bridging... */ },
196 struct protox ip6protox[] = {
197 { -1, -1, 1, protopr,
198 tcp_stats, NULL, "tcp", IPPROTO_TCP },
199 { -1, -1, 1, protopr,
200 udp_stats, NULL, "udp", IPPROTO_UDP },
201 { -1, N_IP6STAT, 1, protopr,
202 ip6_stats, ip6_ifstats, "ip6", IPPROTO_RAW },
203 { -1, N_ICMP6STAT, 1, protopr,
204 icmp6_stats, icmp6_ifstats, "icmp6",IPPROTO_ICMPV6 },
206 { -1, N_IPSEC6STAT, 1, 0,
207 ipsec_stats, NULL, "ipsec6",0 },
210 { -1, N_PIM6STAT, 1, 0,
211 pim6_stats, NULL, "pim6", 0 },
214 rip6_stats, NULL, "rip6", 0 },
216 bdg_stats, NULL, "bdg", 1 /* bridging... */ },
223 struct protox pfkeyprotox[] = {
224 { -1, N_PFKEYSTAT, 1, 0,
225 pfkey_stats, NULL, "pfkey", 0 },
231 struct protox atalkprotox[] = {
232 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
233 ddp_stats, NULL, "ddp" },
238 struct protox netgraphprotox[] = {
239 { N_NGSOCKS, -1, 1, netgraphprotopr,
240 NULL, NULL, "ctrl" },
241 { N_NGSOCKS, -1, 1, netgraphprotopr,
242 NULL, NULL, "data" },
247 struct protox ipxprotox[] = {
248 { N_IPX, N_IPXSTAT, 1, ipxprotopr,
249 ipx_stats, NULL, "ipx", 0 },
250 { N_IPX, N_SPXSTAT, 1, ipxprotopr,
251 spx_stats, NULL, "spx", 0 },
257 struct protox nsprotox[] = {
258 { N_IDP, N_IDPSTAT, 1, nsprotopr,
259 idp_stats, NULL, "idp" },
260 { N_IDP, N_SPPSTAT, 1, nsprotopr,
261 spp_stats, NULL, "spp" },
263 nserr_stats, NULL, "ns_err" },
270 struct protox isoprotox[] = {
271 { ISO_TP, N_TPSTAT, 1, iso_protopr,
272 tp_stats, NULL, "tp" },
273 { N_CLTP, N_CLTPSTAT, 1, iso_protopr,
274 cltp_stats, NULL, "cltp" },
275 { -1, N_CLNPSTAT, 1, 0,
276 clnp_stats, NULL, "clnp"},
277 { -1, N_ESISSTAT, 1, 0,
278 esis_stats, NULL, "esis"},
284 struct protox *protoprotox[] = {
292 ipxprotox, atalkprotox,
301 static void printproto (struct protox *, char *);
302 static void usage (void);
303 static struct protox *name2protox (char *);
304 static struct protox *knownname (char *);
307 static char *nlistf = NULL, *memf = NULL;
309 int Aflag; /* show addresses of protocol control block */
310 int aflag; /* show all sockets (including servers) */
311 int bflag; /* show i/f total bytes in/out */
312 int dflag; /* show i/f dropped packets */
313 int gflag; /* show group (multicast) routing or stats */
314 int iflag; /* show interfaces */
315 int Lflag; /* show size of listen queues */
316 int mflag; /* show memory stats */
317 int numeric_addr; /* show addresses numerically */
318 int numeric_port; /* show ports numerically */
319 static int pflag; /* show given protocol */
320 int rflag; /* show routing tables (or routing stats) */
321 int sflag; /* show protocol statistics */
322 int tflag; /* show i/f watchdog timers */
323 int Wflag; /* wide display */
324 int zflag; /* zero stats */
326 int interval; /* repeat interval for i/f stats */
328 char *interface; /* desired i/f for stats, or NULL for all i/fs */
329 int unit; /* unit number for above */
331 int af; /* address family */
338 register struct protox *tp = NULL; /* for printing cblocks & stats */
343 while ((ch = getopt(argc, argv, "Aabdf:gI:iLlM:mN:np:rSstuWw:z")) != -1)
359 if (strcmp(optarg, "ns") == 0)
363 if (strcmp(optarg, "ipx") == 0)
365 else if (strcmp(optarg, "inet") == 0)
368 else if (strcmp(optarg, "inet6") == 0)
372 else if (strcmp(optarg, "pfkey") == 0)
375 else if (strcmp(optarg, "unix") == 0)
377 else if (strcmp(optarg, "atalk") == 0)
379 else if (strcmp(optarg, "ng") == 0
380 || strcmp(optarg, "netgraph") == 0)
383 else if (strcmp(optarg, "iso") == 0)
386 else if (strcmp(optarg, "link") == 0)
389 errx(1, "%s: unknown address family", optarg);
399 for (cp = interface = optarg; isalpha(*cp); cp++)
420 numeric_addr = numeric_port = 1;
423 if ((tp = name2protox(optarg)) == NULL) {
425 "%s: unknown or uninstrumented protocol",
450 interval = atoi(optarg);
463 #define BACKWARD_COMPATIBILITY
464 #ifdef BACKWARD_COMPATIBILITY
466 if (isdigit(**argv)) {
467 interval = atoi(*argv);
482 * Discard setgid privileges if not the running kernel so that bad
483 * guys can't print interesting stuff from kernel memory.
485 if (nlistf != NULL || memf != NULL)
490 if (kread(0, 0, 0) == 0)
491 mbpr(nl[N_MBSTAT].n_value,
492 nl[N_MBTYPES].n_value,
493 nl[N_NMBCLUSTERS].n_value,
494 nl[N_NMBUFS].n_value);
501 * Keep file descriptors open to avoid overhead
502 * of open/close on each call to get* routines.
508 * This does not make sense any more with DNS being default over
509 * the files. Doing a setXXXXent(1) causes a tcp connection to be
510 * used for the queries, which is slower.
513 if (iflag && !sflag) {
515 intpr(interval, nl[N_IFNET].n_value, NULL);
521 rt_stats(nl[N_RTSTAT].n_value, nl[N_RTTRASH].n_value);
523 routepr(nl[N_RTREE].n_value);
529 if (af == AF_INET || af == AF_UNSPEC)
530 mrt_stats(nl[N_MRTSTAT].n_value);
532 if (af == AF_INET6 || af == AF_UNSPEC)
533 mrt6_stats(nl[N_MRT6STAT].n_value);
536 if (af == AF_INET || af == AF_UNSPEC)
537 mroutepr(nl[N_MFCTABLE].n_value,
538 nl[N_VIFTABLE].n_value);
540 if (af == AF_INET6 || af == AF_UNSPEC)
541 mroute6pr(nl[N_MF6CTABLE].n_value,
542 nl[N_MIF6TABLE].n_value);
550 printproto(tp, tp->pr_name);
553 if (af == AF_INET || af == AF_UNSPEC)
554 for (tp = protox; tp->pr_name; tp++)
555 printproto(tp, tp->pr_name);
557 if (af == AF_INET6 || af == AF_UNSPEC)
558 for (tp = ip6protox; tp->pr_name; tp++)
559 printproto(tp, tp->pr_name);
562 if (af == PF_KEY || af == AF_UNSPEC)
563 for (tp = pfkeyprotox; tp->pr_name; tp++)
564 printproto(tp, tp->pr_name);
566 if (af == AF_IPX || af == AF_UNSPEC) {
568 for (tp = ipxprotox; tp->pr_name; tp++)
569 printproto(tp, tp->pr_name);
571 if (af == AF_APPLETALK || af == AF_UNSPEC)
572 for (tp = atalkprotox; tp->pr_name; tp++)
573 printproto(tp, tp->pr_name);
574 if (af == AF_NETGRAPH || af == AF_UNSPEC)
575 for (tp = netgraphprotox; tp->pr_name; tp++)
576 printproto(tp, tp->pr_name);
578 if (af == AF_NS || af == AF_UNSPEC)
579 for (tp = nsprotox; tp->pr_name; tp++)
580 printproto(tp, tp->pr_name);
583 if (af == AF_ISO || af == AF_UNSPEC)
584 for (tp = isoprotox; tp->pr_name; tp++)
585 printproto(tp, tp->pr_name);
587 if ((af == AF_UNIX || af == AF_UNSPEC) && !Lflag && !sflag)
593 * Print out protocol statistics or control blocks (per sflag).
594 * If the interface was not specifically requested, and the symbol
595 * is not in the namelist, ignore this one.
599 register struct protox *tp;
602 void (*pr)(u_long, char *, int);
608 intpr(interval, nl[N_IFNET].n_value,
611 printf("%s: no per-interface stats routine\n",
619 printf("%s: no stats routine\n",
623 off = tp->pr_usesysctl ? tp->pr_usesysctl
624 : nl[tp->pr_sindex].n_value;
630 printf("%s: no PCB routine\n", tp->pr_name);
633 off = tp->pr_usesysctl ? tp->pr_usesysctl
634 : nl[tp->pr_index].n_value;
636 if (pr != NULL && (off || af != AF_UNSPEC))
637 (*pr)(off, name, af);
641 * Read kernel memory, return 0 on success.
644 kread(u_long addr, char *buf, int size)
650 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf);
652 if (kvm_nlist(kvmd, nl) < 0) {
654 errx(1, "%s: kvm_nlist: %s", nlistf,
657 errx(1, "kvm_nlist: %s", kvm_geterr(kvmd));
660 if (nl[0].n_type == 0) {
662 errx(1, "%s: no namelist", nlistf);
664 errx(1, "no namelist");
667 warnx("kvm not available");
673 if (kvm_read(kvmd, addr, buf, size) != size) {
674 warnx("%s", kvm_geterr(kvmd));
683 return (n != 1 ? "s" : "");
689 return (n != 1 ? "es" : "");
693 * Find the protox for the given "well-known" name.
695 static struct protox *
696 knownname(char *name)
698 struct protox **tpp, *tp;
700 for (tpp = protoprotox; *tpp; tpp++)
701 for (tp = *tpp; tp->pr_name; tp++)
702 if (strcmp(tp->pr_name, name) == 0)
708 * Find the protox corresponding to name.
710 static struct protox *
711 name2protox(char *name)
714 char **alias; /* alias from p->aliases */
718 * Try to find the name in the list of "well-known" names. If that
719 * fails, check if name is an alias for an Internet protocol.
721 if ((tp = knownname(name)) != NULL)
724 setprotoent(1); /* make protocol lookup cheaper */
725 while ((p = getprotoent()) != NULL) {
726 /* assert: name not same as p->name */
727 for (alias = p->p_aliases; *alias; alias++)
728 if (strcmp(name, *alias) == 0) {
730 return (knownname(p->p_name));
740 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
741 "usage: netstat [-AaLnSW] [-f protocol_family | -p protocol]\n"
742 " [-M core] [-N system]",
743 " netstat -i | -I interface [-abdnt] [-f address_family]\n"
744 " [-M core] [-N system]",
745 " netstat -w wait [-I interface] [-d] [-M core] [-N system]",
746 " netstat -s [-s] [-z] [-f protocol_family | -p protocol] [-M core]",
747 " netstat -i | -I interface -s [-f protocol_family | -p protocol]\n"
748 " [-M core] [-N system]",
749 " netstat -m [-M core] [-N system]",
750 " netstat -r [-AanW] [-f address_family] [-M core] [-N system]",
751 " netstat -rs [-s] [-M core] [-N system]",
752 " netstat -g [-W] [-f address_family] [-M core] [-N system]",
753 " netstat -gs [-s] [-f address_family] [-M core] [-N system]");