/* * Copyright (c) 1983, 1988 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted provided * that: (1) source distributions retain this entire copyright notice and * comment, and (2) distributions including binaries display the following * acknowledgement: ``This product includes software developed by the * University of California, Berkeley and its contributors'' in the * documentation or other materials provided with the distribution and in * all advertising materials mentioning features or use of this software. * 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #ifndef lint char copyright[] = "@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\ All rights reserved.\n"; #endif /* not lint */ #ifndef lint static char sccsid[] = "@(#)main.c 5.19 (Berkeley) 6/18/90"; #endif /* not lint */ #include <sys/param.h> #include <sys/vmmac.h> #include <sys/socket.h> #include <sys/file.h> #include <machine/pte.h> #include <ctype.h> #include <errno.h> #include <netdb.h> #include <nlist.h> #include <stdio.h> #include <paths.h> #define nl netstatnl struct nlist nl[] = { #define N_MBSTAT 0 { "_mbstat" }, #define N_IPSTAT 1 { "_ipstat" }, #define N_TCB 2 { "_tcb" }, #define N_TCPSTAT 3 { "_tcpstat" }, #define N_UDB 4 { "_udb" }, #define N_UDPSTAT 5 { "_udpstat" }, #define N_RAWCB 6 { "_rawcb" }, #define N_SYSMAP 7 { "_Sysmap" }, #define N_SYSSIZE 8 { "_Syssize" }, #define N_IFNET 9 { "_ifnet" }, #define N_IMP 10 { "_imp_softc" }, #define N_RTHOST 11 { "_rthost" }, #define N_RTNET 12 { "_rtnet" }, #define N_ICMPSTAT 13 { "_icmpstat" }, #define N_RTSTAT 14 { "_rtstat" }, #define N_NFILE 15 { "_nfile" }, #define N_FILE 16 { "_file" }, #define N_UNIXSW 17 { "_unixsw" }, #define N_RTHASHSIZE 18 { "_rthashsize" }, #define N_IDP 19 { "_nspcb"}, #define N_IDPSTAT 20 { "_idpstat"}, #define N_SPPSTAT 21 { "_spp_istat"}, #define N_NSERR 22 { "_ns_errstat"}, #define N_CLNPSTAT 23 { "_clnp_stat"}, #define IN_TP 24 { "_tp_inpcb" }, #define ISO_TP 25 { "_tp_isopcb" }, #define ISO_X25 26 { /*"_x25_isopcb"*/ "_file"}, /* fast gross hack to speed up */ #define N_TPSTAT 27 { "_tp_stat" }, #define N_X25STAT 28 { /*"_x25_stat"*/ "_file"}, #define N_ESISSTAT 29 { "_esis_stat"}, #define N_NIMP 30 { "_nimp"}, #define N_RTREE 31 { "_radix_node_head"}, #define N_CLTP 32 { "_cltb"}, #define N_CLTPSTAT 33 { "_cltpstat"}, "", }; /* internet protocols */ extern int protopr(); extern int tcp_stats(), udp_stats(), ip_stats(), icmp_stats(); /* ns protocols */ extern int nsprotopr(); extern int spp_stats(), idp_stats(), nserr_stats(); /* iso protocols */ extern int iso_protopr(); extern int tp_stats(), esis_stats(), clnp_stats(), cltp_stats(); #define NULLPROTOX ((struct protox *) 0) struct protox { u_char pr_index; /* index into nlist of cb head */ u_char pr_sindex; /* index into nlist of stat block */ u_char pr_wanted; /* 1 if wanted, 0 otherwise */ int (*pr_cblocks)(); /* control blocks printing routine */ int (*pr_stats)(); /* statistics printing routine */ char *pr_name; /* well-known name */ } protox[] = { { N_TCB, N_TCPSTAT, 1, protopr, tcp_stats, "tcp" }, { N_UDB, N_UDPSTAT, 1, protopr, udp_stats, "udp" }, { IN_TP, N_TPSTAT, 1, protopr, tp_stats, "tpip" }, { -1, N_IPSTAT, 1, 0, ip_stats, "ip" }, { -1, N_ICMPSTAT, 1, 0, icmp_stats, "icmp" }, { -1, -1, 0, 0, 0, 0 } }; struct protox nsprotox[] = { { N_IDP, N_IDPSTAT, 1, nsprotopr, idp_stats, "idp" }, { N_IDP, N_SPPSTAT, 1, nsprotopr, spp_stats, "spp" }, { -1, N_NSERR, 1, 0, nserr_stats, "ns_err" }, { -1, -1, 0, 0, 0, 0 } }; struct protox isoprotox[] = { { ISO_TP, N_TPSTAT, 1, iso_protopr, tp_stats, "tp" }, { N_CLTP, N_CLTPSTAT, 1, iso_protopr, cltp_stats, "cltp" }, #ifdef notdef { ISO_X25, N_X25STAT, 1, x25_protopr, x25_stats, "x25" }, #endif { -1, N_CLNPSTAT, 1, 0, clnp_stats, "clnp"}, { -1, N_ESISSTAT, 1, 0, esis_stats, "esis"}, { -1, -1, 0, 0, 0, 0 } }; struct protox *protoprotox[] = { protox, nsprotox, isoprotox, NULLPROTOX }; struct pte *Sysmap; char *system = _PATH_UNIX; char *kmemf; int kmem; int kflag; int Aflag; int aflag; int hflag; int iflag; int mflag; int nflag; int pflag; int rflag; int sflag; int tflag; int dflag; int interval; char *interface; int unit; int af = AF_UNSPEC; extern char *malloc(); extern off_t lseek(); main(argc, argv) int argc; char *argv[]; { extern char *optarg; extern int optind; register struct protoent *p; register struct protox *tp; /* for printing cblocks & stats */ struct protox *name2protox(); /* for -p */ int ch; while ((ch = getopt(argc, argv, "AI:af:himnp:drstu")) != EOF) switch((char)ch) { case 'A': Aflag++; break; case 'I': { char *cp; iflag++; for (cp = interface = optarg; isalpha(*cp); cp++); unit = atoi(cp); *cp = '\0'; break; } case 'a': aflag++; break; case 'd': dflag++; break; case 'f': if (strcmp(optarg, "ns") == 0) af = AF_NS; else if (strcmp(optarg, "inet") == 0) af = AF_INET; else if (strcmp(optarg, "unix") == 0) af = AF_UNIX; else if (strcmp(optarg, "iso") == 0) af = AF_ISO; else { fprintf(stderr, "%s: unknown address family\n", optarg); exit(10); } break; case 'h': hflag++; break; case 'i': iflag++; break; case 'm': mflag++; break; case 'n': nflag++; break; case 'p': if ((tp = name2protox(optarg)) == NULLPROTOX) { fprintf(stderr, "%s: unknown or uninstrumented protocol\n", optarg); exit(10); } pflag++; break; case 'r': rflag++; break; case 's': sflag++; break; case 't': tflag++; break; case 'u': af = AF_UNIX; break; case '?': default: usage(); } argv += optind; argc -= optind; if (argc > 0) { if (isdigit(argv[0][0])) { interval = atoi(argv[0]); if (interval <= 0) usage(); argv++, argc--; iflag++; } if (argc > 0) { system = *argv; argv++, argc--; if (argc > 0) { kmemf = *argv; kflag++; } } } if (kvm_openfiles(system, kmemf, (char *)0) == -1) { fprintf("netstat(kvm_openfiles): %s\n", kvm_geterr()); exit(1); } if (kvm_nlist(nl) < 0 || nl[0].n_type == 0) { fprintf(stderr, "%s: no namelist\n", system); exit(1); } if (mflag) { mbpr((off_t)nl[N_MBSTAT].n_value); exit(0); } if (pflag) { if (tp->pr_stats) (*tp->pr_stats)(nl[tp->pr_sindex].n_value, tp->pr_name); else printf("%s: no stats routine\n", tp->pr_name); exit(0); } if (hflag) { hostpr(nl[N_IMP].n_value, nl[N_NIMP].n_value); exit(0); } /* * Keep file descriptors open to avoid overhead * of open/close on each call to get* routines. */ sethostent(1); setnetent(1); if (iflag) { intpr(interval, nl[N_IFNET].n_value); exit(0); } if (rflag) { if (sflag) rt_stats((off_t)nl[N_RTSTAT].n_value); else routepr((off_t)nl[N_RTHOST].n_value, (off_t)nl[N_RTNET].n_value, (off_t)nl[N_RTHASHSIZE].n_value, (off_t)nl[N_RTREE].n_value); exit(0); } if (af == AF_INET || af == AF_UNSPEC) { setprotoent(1); setservent(1); while (p = getprotoent()) { for (tp = protox; tp->pr_name; tp++) if (strcmp(tp->pr_name, p->p_name) == 0) break; if (tp->pr_name == 0 || tp->pr_wanted == 0) continue; if (sflag) { if (tp->pr_stats) (*tp->pr_stats)(nl[tp->pr_sindex].n_value, p->p_name); } else if (tp->pr_cblocks) (*tp->pr_cblocks)(nl[tp->pr_index].n_value, p->p_name); } endprotoent(); } if (af == AF_NS || af == AF_UNSPEC) { for (tp = nsprotox; tp->pr_name; tp++) { if (sflag) { if (tp->pr_stats) (*tp->pr_stats)(nl[tp->pr_sindex].n_value, tp->pr_name); } else if (tp->pr_cblocks) (*tp->pr_cblocks)(nl[tp->pr_index].n_value, tp->pr_name); } } if (af == AF_ISO || af == AF_UNSPEC) { for (tp = isoprotox; tp->pr_name; tp++) { if (sflag) { if (tp->pr_stats) (*tp->pr_stats)(nl[tp->pr_sindex].n_value, tp->pr_name); } else if (tp->pr_cblocks) (*tp->pr_cblocks)(nl[tp->pr_index].n_value, tp->pr_name); } } if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) unixpr((off_t)nl[N_NFILE].n_value, (off_t)nl[N_FILE].n_value, (struct protosw *)nl[N_UNIXSW].n_value); if (af == AF_UNSPEC && sflag) impstats(nl[N_IMP].n_value, nl[N_NIMP].n_value); exit(0); } char * plural(n) int n; { return (n != 1 ? "s" : ""); } /* * Find the protox for the given "well-known" name. */ struct protox * knownname(name) 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(NULLPROTOX); } /* * Find the protox corresponding to name. */ struct protox * name2protox(name) 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)) return(tp); setprotoent(1); /* make protocol lookup cheaper */ while (p = getprotoent()) { /* 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(NULLPROTOX); } usage() { fputs("usage: netstat [-Aan] [-f address_family] [system] [core]\n [-himnrs] [-f address_family] [system] [core]\n [-n] [-I interface] interval [system] [core]\n", stderr); exit(1); }