/*- * Copyright (c) 1983, 1988, 1993 * Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint char const copyright[] = "@(#) Copyright (c) 1983, 1988, 1993\n\ Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #if 0 #ifndef lint static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94"; #endif /* not lint */ #endif #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #ifdef NETGRAPH #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include "netstat.h" static struct nlist nl[] = { #define N_IFNET 0 { .n_name = "_ifnet" }, /* XXXGL: can be deleted */ #define N_RTSTAT 1 { .n_name = "_rtstat" }, #define N_RTREE 2 { .n_name = "_rt_tables"}, #define N_MRTSTAT 3 { .n_name = "_mrtstat" }, #define N_MFCHASHTBL 4 { .n_name = "_mfchashtbl" }, #define N_VIFTABLE 5 { .n_name = "_viftable" }, #define N_IPX 6 { .n_name = "_ipxpcb_list"}, #define N_IPXSTAT 7 { .n_name = "_ipxstat"}, #define N_SPXSTAT 8 { .n_name = "_spx_istat"}, #define N_DDPSTAT 9 { .n_name = "_ddpstat"}, #define N_DDPCB 10 { .n_name = "_ddpcb"}, #define N_NGSOCKS 11 { .n_name = "_ngsocklist"}, #define N_IP6STAT 12 { .n_name = "_ip6stat" }, #define N_ICMP6STAT 13 { .n_name = "_icmp6stat" }, #define N_IPSECSTAT 14 { .n_name = "_ipsec4stat" }, #define N_IPSEC6STAT 15 { .n_name = "_ipsec6stat" }, #define N_PIM6STAT 16 { .n_name = "_pim6stat" }, #define N_MRT6STAT 17 { .n_name = "_mrt6stat" }, #define N_MF6CTABLE 18 { .n_name = "_mf6ctable" }, #define N_MIF6TABLE 19 { .n_name = "_mif6table" }, #define N_PFKEYSTAT 20 { .n_name = "_pfkeystat" }, #define N_RTTRASH 21 { .n_name = "_rttrash" }, #define N_CARPSTAT 22 { .n_name = "_carpstats" }, #define N_PFSYNCSTAT 23 { .n_name = "_pfsyncstats" }, #define N_AHSTAT 24 { .n_name = "_ahstat" }, #define N_ESPSTAT 25 { .n_name = "_espstat" }, #define N_IPCOMPSTAT 26 { .n_name = "_ipcompstat" }, #define N_TCPSTAT 27 { .n_name = "_tcpstat" }, #define N_UDPSTAT 28 { .n_name = "_udpstat" }, #define N_IPSTAT 29 { .n_name = "_ipstat" }, #define N_ICMPSTAT 30 { .n_name = "_icmpstat" }, #define N_IGMPSTAT 31 { .n_name = "_igmpstat" }, #define N_PIMSTAT 32 { .n_name = "_pimstat" }, #define N_TCBINFO 33 { .n_name = "_tcbinfo" }, #define N_UDBINFO 34 { .n_name = "_udbinfo" }, #define N_DIVCBINFO 35 { .n_name = "_divcbinfo" }, #define N_RIPCBINFO 36 { .n_name = "_ripcbinfo" }, #define N_UNP_COUNT 37 { .n_name = "_unp_count" }, #define N_UNP_GENCNT 38 { .n_name = "_unp_gencnt" }, #define N_UNP_DHEAD 39 { .n_name = "_unp_dhead" }, #define N_UNP_SHEAD 40 { .n_name = "_unp_shead" }, #define N_RIP6STAT 41 { .n_name = "_rip6stat" }, #define N_SCTPSTAT 42 { .n_name = "_sctpstat" }, #define N_MFCTABLESIZE 43 { .n_name = "_mfctablesize" }, #define N_ARPSTAT 44 { .n_name = "_arpstat" }, #define N_UNP_SPHEAD 45 { .n_name = "unp_sphead" }, #define N_SFSTAT 46 { .n_name = "_sfstat"}, { .n_name = NULL }, }; struct protox { int pr_index; /* index into nlist of cb head */ int pr_sindex; /* index into nlist of stat block */ u_char pr_wanted; /* 1 if wanted, 0 otherwise */ void (*pr_cblocks)(u_long, const char *, int, int); /* control blocks printing routine */ void (*pr_stats)(u_long, const char *, int, int); /* statistics printing routine */ void (*pr_istats)(char *); /* per/if statistics printing routine */ const char *pr_name; /* well-known name */ int pr_usesysctl; /* non-zero if we use sysctl, not kvm */ int pr_protocol; } protox[] = { { N_TCBINFO, N_TCPSTAT, 1, protopr, tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, { N_UDBINFO, N_UDPSTAT, 1, protopr, udp_stats, NULL, "udp", 1, IPPROTO_UDP }, #ifdef SCTP { -1, N_SCTPSTAT, 1, sctp_protopr, sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP }, #endif #ifdef SDP { -1, -1, 1, protopr, NULL, NULL, "sdp", 1, IPPROTO_TCP }, #endif { N_DIVCBINFO, -1, 1, protopr, NULL, NULL, "divert", 1, IPPROTO_DIVERT }, { N_RIPCBINFO, N_IPSTAT, 1, protopr, ip_stats, NULL, "ip", 1, IPPROTO_RAW }, { N_RIPCBINFO, N_ICMPSTAT, 1, protopr, icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP }, { N_RIPCBINFO, N_IGMPSTAT, 1, protopr, igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP }, #ifdef IPSEC { -1, N_IPSECSTAT, 1, NULL, /* keep as compat */ ipsec_stats, NULL, "ipsec", 0, 0}, { -1, N_AHSTAT, 1, NULL, ah_stats, NULL, "ah", 0, 0}, { -1, N_ESPSTAT, 1, NULL, esp_stats, NULL, "esp", 0, 0}, { -1, N_IPCOMPSTAT, 1, NULL, ipcomp_stats, NULL, "ipcomp", 0, 0}, #endif { N_RIPCBINFO, N_PIMSTAT, 1, protopr, pim_stats, NULL, "pim", 1, IPPROTO_PIM }, { -1, N_CARPSTAT, 1, NULL, carp_stats, NULL, "carp", 1, 0 }, #ifdef PF { -1, N_PFSYNCSTAT, 1, NULL, pfsync_stats, NULL, "pfsync", 1, 0 }, #endif { -1, N_ARPSTAT, 1, NULL, arp_stats, NULL, "arp", 1, 0 }, { -1, -1, 0, NULL, NULL, NULL, NULL, 0, 0 } }; #ifdef INET6 struct protox ip6protox[] = { { N_TCBINFO, N_TCPSTAT, 1, protopr, tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, { N_UDBINFO, N_UDPSTAT, 1, protopr, udp_stats, NULL, "udp", 1, IPPROTO_UDP }, { N_RIPCBINFO, N_IP6STAT, 1, protopr, ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW }, { N_RIPCBINFO, N_ICMP6STAT, 1, protopr, icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 }, #ifdef SDP { -1, -1, 1, protopr, NULL, NULL, "sdp", 1, IPPROTO_TCP }, #endif #ifdef IPSEC { -1, N_IPSEC6STAT, 1, NULL, ipsec_stats, NULL, "ipsec6", 0, 0 }, #endif #ifdef notyet { -1, N_PIM6STAT, 1, NULL, pim6_stats, NULL, "pim6", 1, 0 }, #endif { -1, N_RIP6STAT, 1, NULL, rip6_stats, NULL, "rip6", 1, 0 }, { -1, -1, 0, NULL, NULL, NULL, NULL, 0, 0 } }; #endif /*INET6*/ #ifdef IPSEC struct protox pfkeyprotox[] = { { -1, N_PFKEYSTAT, 1, NULL, pfkey_stats, NULL, "pfkey", 0, 0 }, { -1, -1, 0, NULL, NULL, NULL, NULL, 0, 0 } }; #endif struct protox atalkprotox[] = { { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, ddp_stats, NULL, "ddp", 0, 0 }, { -1, -1, 0, NULL, NULL, NULL, NULL, 0, 0 } }; #ifdef NETGRAPH struct protox netgraphprotox[] = { { N_NGSOCKS, -1, 1, netgraphprotopr, NULL, NULL, "ctrl", 0, 0 }, { N_NGSOCKS, -1, 1, netgraphprotopr, NULL, NULL, "data", 0, 0 }, { -1, -1, 0, NULL, NULL, NULL, NULL, 0, 0 } }; #endif #ifdef IPX struct protox ipxprotox[] = { { N_IPX, N_IPXSTAT, 1, ipxprotopr, ipx_stats, NULL, "ipx", 0, 0 }, { N_IPX, N_SPXSTAT, 1, ipxprotopr, spx_stats, NULL, "spx", 0, 0 }, { -1, -1, 0, NULL, NULL, NULL, 0, 0, 0 } }; #endif struct protox *protoprotox[] = { protox, #ifdef INET6 ip6protox, #endif #ifdef IPSEC pfkeyprotox, #endif #ifdef IPX ipxprotox, #endif atalkprotox, NULL }; static void printproto(struct protox *, const char *); static void usage(void); static struct protox *name2protox(const char *); static struct protox *knownname(const char *); static kvm_t *kvmd; static char *nlistf = NULL, *memf = NULL; int Aflag; /* show addresses of protocol control block */ int aflag; /* show all sockets (including servers) */ int Bflag; /* show information about bpf consumers */ int bflag; /* show i/f total bytes in/out */ int dflag; /* show i/f dropped packets */ int gflag; /* show group (multicast) routing or stats */ int hflag; /* show counters in human readable format */ int iflag; /* show interfaces */ int Lflag; /* show size of listen queues */ int mflag; /* show memory stats */ int noutputs = 0; /* how much outputs before we exit */ int numeric_addr; /* show addresses numerically */ int numeric_port; /* show ports numerically */ static int pflag; /* show given protocol */ int Qflag; /* show netisr information */ int rflag; /* show routing tables (or routing stats) */ int Rflag; /* show flow / RSS statistics */ int sflag; /* show protocol statistics */ int Wflag; /* wide display */ int Tflag; /* TCP Information */ int xflag; /* extra information, includes all socket buffer info */ int zflag; /* zero stats */ int interval; /* repeat interval for i/f stats */ char *interface; /* desired i/f for stats, or NULL for all i/fs */ int unit; /* unit number for above */ int af; /* address family */ int live; /* true if we are examining a live system */ int main(int argc, char *argv[]) { struct protox *tp = NULL; /* for printing cblocks & stats */ int ch; int fib = -1; char *endptr; af = AF_UNSPEC; while ((ch = getopt(argc, argv, "46AaBbdF:f:ghI:iLlM:mN:np:Qq:RrSTsuWw:xz")) != -1) switch(ch) { case '4': #ifdef INET af = AF_INET; #else errx(1, "IPv4 support is not compiled in"); #endif break; case '6': #ifdef INET6 af = AF_INET6; #else errx(1, "IPv6 support is not compiled in"); #endif break; case 'A': Aflag = 1; break; case 'a': aflag = 1; break; case 'B': Bflag = 1; break; case 'b': bflag = 1; break; case 'd': dflag = 1; break; case 'F': fib = strtol(optarg, &endptr, 0); if (*endptr != '\0' || (fib == 0 && (errno == EINVAL || errno == ERANGE))) errx(1, "%s: invalid fib", optarg); break; case 'f': if (strcmp(optarg, "ipx") == 0) af = AF_IPX; else if (strcmp(optarg, "inet") == 0) af = AF_INET; #ifdef INET6 else if (strcmp(optarg, "inet6") == 0) af = AF_INET6; #endif #ifdef IPSEC else if (strcmp(optarg, "pfkey") == 0) af = PF_KEY; #endif else if (strcmp(optarg, "unix") == 0) af = AF_UNIX; else if (strcmp(optarg, "atalk") == 0) af = AF_APPLETALK; #ifdef NETGRAPH else if (strcmp(optarg, "ng") == 0 || strcmp(optarg, "netgraph") == 0) af = AF_NETGRAPH; #endif else if (strcmp(optarg, "link") == 0) af = AF_LINK; else { errx(1, "%s: unknown address family", optarg); } break; case 'g': gflag = 1; break; case 'h': hflag = 1; break; case 'I': { char *cp; iflag = 1; for (cp = interface = optarg; isalpha(*cp); cp++) continue; unit = atoi(cp); break; } case 'i': iflag = 1; break; case 'L': Lflag = 1; break; case 'M': memf = optarg; break; case 'm': mflag = 1; break; case 'N': nlistf = optarg; break; case 'n': numeric_addr = numeric_port = 1; break; case 'p': if ((tp = name2protox(optarg)) == NULL) { errx(1, "%s: unknown or uninstrumented protocol", optarg); } pflag = 1; break; case 'Q': Qflag = 1; break; case 'q': noutputs = atoi(optarg); if (noutputs != 0) noutputs++; break; case 'r': rflag = 1; break; case 'R': Rflag = 1; break; case 's': ++sflag; break; case 'S': numeric_addr = 1; break; case 'u': af = AF_UNIX; break; case 'W': case 'l': Wflag = 1; break; case 'w': interval = atoi(optarg); iflag = 1; break; case 'T': Tflag = 1; break; case 'x': xflag = 1; break; case 'z': zflag = 1; break; case '?': default: usage(); } argv += optind; argc -= optind; #define BACKWARD_COMPATIBILITY #ifdef BACKWARD_COMPATIBILITY if (*argv) { if (isdigit(**argv)) { interval = atoi(*argv); if (interval <= 0) usage(); ++argv; iflag = 1; } if (*argv) { nlistf = *argv; if (*++argv) memf = *argv; } } #endif /* * Discard setgid privileges if not the running kernel so that bad * guys can't print interesting stuff from kernel memory. */ live = (nlistf == NULL && memf == NULL); if (!live) setgid(getgid()); if (xflag && Tflag) errx(1, "-x and -T are incompatible, pick one."); if (Bflag) { if (!live) usage(); bpf_stats(interface); exit(0); } if (mflag) { if (!live) { if (kread(0, NULL, 0) == 0) mbpr(kvmd, nl[N_SFSTAT].n_value); } else mbpr(NULL, 0); exit(0); } if (Qflag) { if (!live) { if (kread(0, NULL, 0) == 0) netisr_stats(kvmd); } else netisr_stats(NULL); exit(0); } #if 0 /* * Keep file descriptors open to avoid overhead * of open/close on each call to get* routines. */ sethostent(1); setnetent(1); #else /* * This does not make sense any more with DNS being default over * the files. Doing a setXXXXent(1) causes a tcp connection to be * used for the queries, which is slower. */ #endif if (iflag && !sflag) { intpr(interval, NULL, af); exit(0); } if (rflag) { if (sflag) { rt_stats(); flowtable_stats(); } else routepr(fib, af); exit(0); } if (gflag) { if (sflag) { if (af == AF_INET || af == AF_UNSPEC) mrt_stats(); #ifdef INET6 if (af == AF_INET6 || af == AF_UNSPEC) mrt6_stats(); #endif } else { if (af == AF_INET || af == AF_UNSPEC) mroutepr(); #ifdef INET6 if (af == AF_INET6 || af == AF_UNSPEC) mroute6pr(); #endif } exit(0); } /* Load all necessary kvm symbols */ kresolve_list(nl); if (tp) { printproto(tp, tp->pr_name); exit(0); } if (af == AF_INET || af == AF_UNSPEC) for (tp = protox; tp->pr_name; tp++) printproto(tp, tp->pr_name); #ifdef INET6 if (af == AF_INET6 || af == AF_UNSPEC) for (tp = ip6protox; tp->pr_name; tp++) printproto(tp, tp->pr_name); #endif /*INET6*/ #ifdef IPSEC if (af == PF_KEY || af == AF_UNSPEC) for (tp = pfkeyprotox; tp->pr_name; tp++) printproto(tp, tp->pr_name); #endif /*IPSEC*/ #ifdef IPX if (af == AF_IPX || af == AF_UNSPEC) { for (tp = ipxprotox; tp->pr_name; tp++) printproto(tp, tp->pr_name); } #endif /* IPX */ if (af == AF_APPLETALK || af == AF_UNSPEC) for (tp = atalkprotox; tp->pr_name; tp++) printproto(tp, tp->pr_name); #ifdef NETGRAPH if (af == AF_NETGRAPH || af == AF_UNSPEC) for (tp = netgraphprotox; tp->pr_name; tp++) printproto(tp, tp->pr_name); #endif /* NETGRAPH */ if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value, nl[N_UNP_SPHEAD].n_value); exit(0); } /* * Print out protocol statistics or control blocks (per sflag). * If the interface was not specifically requested, and the symbol * is not in the namelist, ignore this one. */ static void printproto(struct protox *tp, const char *name) { void (*pr)(u_long, const char *, int, int); u_long off; if (sflag) { if (iflag) { if (tp->pr_istats) intpr(interval, tp->pr_istats, af); else if (pflag) printf("%s: no per-interface stats routine\n", tp->pr_name); return; } else { pr = tp->pr_stats; if (!pr) { if (pflag) printf("%s: no stats routine\n", tp->pr_name); return; } if (tp->pr_usesysctl && live) off = 0; else if (tp->pr_sindex < 0) { if (pflag) printf( "%s: stats routine doesn't work on cores\n", tp->pr_name); return; } else off = nl[tp->pr_sindex].n_value; } } else { pr = tp->pr_cblocks; if (!pr) { if (pflag) printf("%s: no PCB routine\n", tp->pr_name); return; } if (tp->pr_usesysctl && live) off = 0; else if (tp->pr_index < 0) { if (pflag) printf( "%s: PCB routine doesn't work on cores\n", tp->pr_name); return; } else off = nl[tp->pr_index].n_value; } if (pr != NULL && (off || (live && tp->pr_usesysctl) || af != AF_UNSPEC)) (*pr)(off, name, af, tp->pr_protocol); } static int kvmd_init(void) { char errbuf[_POSIX2_LINE_MAX]; if (kvmd != NULL) return (0); kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); setgid(getgid()); if (kvmd == NULL) { warnx("kvm not available: %s", errbuf); return (-1); } return (0); } /* * Resolve symbol list, return 0 on success. */ int kresolve_list(struct nlist *_nl) { if ((kvmd == NULL) && (kvmd_init() != 0)) return (-1); if (_nl[0].n_type != 0) return (0); if (kvm_nlist(kvmd, _nl) < 0) { if (nlistf) errx(1, "%s: kvm_nlist: %s", nlistf, kvm_geterr(kvmd)); else errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); } return (0); } /* * Read kernel memory, return 0 on success. */ int kread(u_long addr, void *buf, size_t size) { if (kvmd_init() < 0) return (-1); if (!buf) return (0); if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { warnx("%s", kvm_geterr(kvmd)); return (-1); } return (0); } /* * Read single counter(9). */ uint64_t kread_counter(u_long addr) { if (kvmd_init() < 0) return (-1); return (kvm_counter_u64_fetch(kvmd, addr)); } /* * Read an array of N counters in kernel memory into array of N uint64_t's. */ int kread_counters(u_long addr, void *buf, size_t size) { uint64_t *c = buf; if (kvmd_init() < 0) return (-1); if (kread(addr, buf, size) < 0) return (-1); while (size != 0) { *c = kvm_counter_u64_fetch(kvmd, *c); size -= sizeof(*c); c++; } return (0); } const char * plural(uintmax_t n) { return (n != 1 ? "s" : ""); } const char * plurales(uintmax_t n) { return (n != 1 ? "es" : ""); } const char * pluralies(uintmax_t n) { return (n != 1 ? "ies" : "y"); } /* * Find the protox for the given "well-known" name. */ static struct protox * knownname(const char *name) { struct protox **tpp, *tp; for (tpp = protoprotox; *tpp; tpp++) for (tp = *tpp; tp->pr_name; tp++) if (strcmp(tp->pr_name, name) == 0) return (tp); return (NULL); } /* * Find the protox corresponding to name. */ static struct protox * name2protox(const char *name) { struct protox *tp; char **alias; /* alias from p->aliases */ struct protoent *p; /* * Try to find the name in the list of "well-known" names. If that * fails, check if name is an alias for an Internet protocol. */ if ((tp = knownname(name)) != NULL) return (tp); setprotoent(1); /* make protocol lookup cheaper */ while ((p = getprotoent()) != NULL) { /* assert: name not same as p->name */ for (alias = p->p_aliases; *alias; alias++) if (strcmp(name, *alias) == 0) { endprotoent(); return (knownname(p->p_name)); } } endprotoent(); return (NULL); } static void usage(void) { (void)fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n", "usage: netstat [-46AaLnRSTWx] [-f protocol_family | -p protocol]\n" " [-M core] [-N system]", " netstat -i | -I interface [-46abdhnW] [-f address_family]\n" " [-M core] [-N system]", " netstat -w wait [-I interface] [-46d] [-M core] [-N system] [-q howmany]", " netstat -s [-s] [-46z] [-f protocol_family | -p protocol]\n" " [-M core] [-N system]", " netstat -i | -I interface [-46s] [-f protocol_family | -p protocol]\n" " [-M core] [-N system]", " netstat -m [-M core] [-N system]", " netstat -B [-I interface]", " netstat -r [-46AanW] [-f address_family] [-M core] [-N system]", " netstat -rs [-s] [-M core] [-N system]", " netstat -g [-46W] [-f address_family] [-M core] [-N system]", " netstat -gs [-46s] [-f address_family] [-M core] [-N system]", " netstat -Q"); exit(1); }