main.c revision 216370
1/*- 2 * Copyright (c) 1983, 1988, 1993 3 * Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#ifndef lint 31char const copyright[] = 32"@(#) Copyright (c) 1983, 1988, 1993\n\ 33 Regents of the University of California. All rights reserved.\n"; 34#endif /* not lint */ 35 36#if 0 37#ifndef lint 38static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94"; 39#endif /* not lint */ 40#endif 41 42#include <sys/cdefs.h> 43__FBSDID("$FreeBSD: head/usr.bin/netstat/main.c 216370 2010-12-11 08:32:16Z joel $"); 44 45#include <sys/param.h> 46#include <sys/file.h> 47#include <sys/protosw.h> 48#include <sys/socket.h> 49#include <sys/socketvar.h> 50 51#include <netinet/in.h> 52 53#ifdef NETGRAPH 54#include <netgraph/ng_socket.h> 55#endif 56 57#include <ctype.h> 58#include <err.h> 59#include <errno.h> 60#include <kvm.h> 61#include <limits.h> 62#include <netdb.h> 63#include <nlist.h> 64#include <paths.h> 65#include <stdint.h> 66#include <stdio.h> 67#include <stdlib.h> 68#include <string.h> 69#include <unistd.h> 70#include "netstat.h" 71 72static struct nlist nl[] = { 73#define N_IFNET 0 74 { .n_name = "_ifnet" }, 75#define N_RTSTAT 1 76 { .n_name = "_rtstat" }, 77#define N_RTREE 2 78 { .n_name = "_rt_tables"}, 79#define N_MRTSTAT 3 80 { .n_name = "_mrtstat" }, 81#define N_MFCHASHTBL 4 82 { .n_name = "_mfchashtbl" }, 83#define N_VIFTABLE 5 84 { .n_name = "_viftable" }, 85#define N_IPX 6 86 { .n_name = "_ipxpcb_list"}, 87#define N_IPXSTAT 7 88 { .n_name = "_ipxstat"}, 89#define N_SPXSTAT 8 90 { .n_name = "_spx_istat"}, 91#define N_DDPSTAT 9 92 { .n_name = "_ddpstat"}, 93#define N_DDPCB 10 94 { .n_name = "_ddpcb"}, 95#define N_NGSOCKS 11 96 { .n_name = "_ngsocklist"}, 97#define N_IP6STAT 12 98 { .n_name = "_ip6stat" }, 99#define N_ICMP6STAT 13 100 { .n_name = "_icmp6stat" }, 101#define N_IPSECSTAT 14 102 { .n_name = "_ipsec4stat" }, 103#define N_IPSEC6STAT 15 104 { .n_name = "_ipsec6stat" }, 105#define N_PIM6STAT 16 106 { .n_name = "_pim6stat" }, 107#define N_MRT6STAT 17 108 { .n_name = "_mrt6stat" }, 109#define N_MF6CTABLE 18 110 { .n_name = "_mf6ctable" }, 111#define N_MIF6TABLE 19 112 { .n_name = "_mif6table" }, 113#define N_PFKEYSTAT 20 114 { .n_name = "_pfkeystat" }, 115#define N_MBSTAT 21 116 { .n_name = "_mbstat" }, 117#define N_MBTYPES 22 118 { .n_name = "_mbtypes" }, 119#define N_NMBCLUSTERS 23 120 { .n_name = "_nmbclusters" }, 121#define N_NMBUFS 24 122 { .n_name = "_nmbufs" }, 123#define N_MBHI 25 124 { .n_name = "_mbuf_hiwm" }, 125#define N_CLHI 26 126 { .n_name = "_clust_hiwm" }, 127#define N_NCPUS 27 128 { .n_name = "_smp_cpus" }, 129#define N_PAGESZ 28 130 { .n_name = "_pagesize" }, 131#define N_MBPSTAT 29 132 { .n_name = "_mb_statpcpu" }, 133#define N_RTTRASH 30 134 { .n_name = "_rttrash" }, 135#define N_MBLO 31 136 { .n_name = "_mbuf_lowm" }, 137#define N_CLLO 32 138 { .n_name = "_clust_lowm" }, 139#define N_CARPSTAT 33 140 { .n_name = "_carpstats" }, 141#define N_PFSYNCSTAT 34 142 { .n_name = "_pfsyncstats" }, 143#define N_AHSTAT 35 144 { .n_name = "_ahstat" }, 145#define N_ESPSTAT 36 146 { .n_name = "_espstat" }, 147#define N_IPCOMPSTAT 37 148 { .n_name = "_ipcompstat" }, 149#define N_TCPSTAT 38 150 { .n_name = "_tcpstat" }, 151#define N_UDPSTAT 39 152 { .n_name = "_udpstat" }, 153#define N_IPSTAT 40 154 { .n_name = "_ipstat" }, 155#define N_ICMPSTAT 41 156 { .n_name = "_icmpstat" }, 157#define N_IGMPSTAT 42 158 { .n_name = "_igmpstat" }, 159#define N_PIMSTAT 43 160 { .n_name = "_pimstat" }, 161#define N_TCBINFO 44 162 { .n_name = "_tcbinfo" }, 163#define N_UDBINFO 45 164 { .n_name = "_udbinfo" }, 165#define N_DIVCBINFO 46 166 { .n_name = "_divcbinfo" }, 167#define N_RIPCBINFO 47 168 { .n_name = "_ripcbinfo" }, 169#define N_UNP_COUNT 48 170 { .n_name = "_unp_count" }, 171#define N_UNP_GENCNT 49 172 { .n_name = "_unp_gencnt" }, 173#define N_UNP_DHEAD 50 174 { .n_name = "_unp_dhead" }, 175#define N_UNP_SHEAD 51 176 { .n_name = "_unp_shead" }, 177#define N_RIP6STAT 52 178 { .n_name = "_rip6stat" }, 179#define N_SCTPSTAT 53 180 { .n_name = "_sctpstat" }, 181#define N_MFCTABLESIZE 54 182 { .n_name = "_mfctablesize" }, 183#define N_ARPSTAT 55 184 { .n_name = "_arpstat" }, 185#define N_UNP_SPHEAD 56 186 { .n_name = "unp_sphead" }, 187 { .n_name = NULL }, 188}; 189 190struct protox { 191 int pr_index; /* index into nlist of cb head */ 192 int pr_sindex; /* index into nlist of stat block */ 193 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 194 void (*pr_cblocks)(u_long, const char *, int, int); 195 /* control blocks printing routine */ 196 void (*pr_stats)(u_long, const char *, int, int); 197 /* statistics printing routine */ 198 void (*pr_istats)(char *); /* per/if statistics printing routine */ 199 const char *pr_name; /* well-known name */ 200 int pr_usesysctl; /* non-zero if we use sysctl, not kvm */ 201 int pr_protocol; 202} protox[] = { 203 { N_TCBINFO, N_TCPSTAT, 1, protopr, 204 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 205 { N_UDBINFO, N_UDPSTAT, 1, protopr, 206 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 207#ifdef SCTP 208 { -1, N_SCTPSTAT, 1, sctp_protopr, 209 sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP }, 210#endif 211 { N_DIVCBINFO, -1, 1, protopr, 212 NULL, NULL, "divert", 1, IPPROTO_DIVERT }, 213 { N_RIPCBINFO, N_IPSTAT, 1, protopr, 214 ip_stats, NULL, "ip", 1, IPPROTO_RAW }, 215 { N_RIPCBINFO, N_ICMPSTAT, 1, protopr, 216 icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP }, 217 { N_RIPCBINFO, N_IGMPSTAT, 1, protopr, 218 igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP }, 219#ifdef IPSEC 220 { -1, N_IPSECSTAT, 1, NULL, /* keep as compat */ 221 ipsec_stats, NULL, "ipsec", 0, 0}, 222 { -1, N_AHSTAT, 1, NULL, 223 ah_stats, NULL, "ah", 0, 0}, 224 { -1, N_ESPSTAT, 1, NULL, 225 esp_stats, NULL, "esp", 0, 0}, 226 { -1, N_IPCOMPSTAT, 1, NULL, 227 ipcomp_stats, NULL, "ipcomp", 0, 0}, 228#endif 229 { N_RIPCBINFO, N_PIMSTAT, 1, protopr, 230 pim_stats, NULL, "pim", 1, IPPROTO_PIM }, 231 { -1, N_CARPSTAT, 1, NULL, 232 carp_stats, NULL, "carp", 1, 0 }, 233 { -1, N_PFSYNCSTAT, 1, NULL, 234 pfsync_stats, NULL, "pfsync", 1, 0 }, 235 { -1, N_ARPSTAT, 1, NULL, 236 arp_stats, NULL, "arp", 1, 0 }, 237 { -1, -1, 0, NULL, 238 NULL, NULL, NULL, 0, 0 } 239}; 240 241#ifdef INET6 242struct protox ip6protox[] = { 243 { N_TCBINFO, N_TCPSTAT, 1, protopr, 244 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 245 { N_UDBINFO, N_UDPSTAT, 1, protopr, 246 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 247 { N_RIPCBINFO, N_IP6STAT, 1, protopr, 248 ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW }, 249 { N_RIPCBINFO, N_ICMP6STAT, 1, protopr, 250 icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 }, 251#ifdef IPSEC 252 { -1, N_IPSEC6STAT, 1, NULL, 253 ipsec_stats, NULL, "ipsec6", 0, 0 }, 254#endif 255#ifdef notyet 256 { -1, N_PIM6STAT, 1, NULL, 257 pim6_stats, NULL, "pim6", 1, 0 }, 258#endif 259 { -1, N_RIP6STAT, 1, NULL, 260 rip6_stats, NULL, "rip6", 1, 0 }, 261 { -1, -1, 0, NULL, 262 NULL, NULL, NULL, 0, 0 } 263}; 264#endif /*INET6*/ 265 266#ifdef IPSEC 267struct protox pfkeyprotox[] = { 268 { -1, N_PFKEYSTAT, 1, NULL, 269 pfkey_stats, NULL, "pfkey", 0, 0 }, 270 { -1, -1, 0, NULL, 271 NULL, NULL, NULL, 0, 0 } 272}; 273#endif 274 275struct protox atalkprotox[] = { 276 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, 277 ddp_stats, NULL, "ddp", 0, 0 }, 278 { -1, -1, 0, NULL, 279 NULL, NULL, NULL, 0, 0 } 280}; 281#ifdef NETGRAPH 282struct protox netgraphprotox[] = { 283 { N_NGSOCKS, -1, 1, netgraphprotopr, 284 NULL, NULL, "ctrl", 0, 0 }, 285 { N_NGSOCKS, -1, 1, netgraphprotopr, 286 NULL, NULL, "data", 0, 0 }, 287 { -1, -1, 0, NULL, 288 NULL, NULL, NULL, 0, 0 } 289}; 290#endif 291#ifdef IPX 292struct protox ipxprotox[] = { 293 { N_IPX, N_IPXSTAT, 1, ipxprotopr, 294 ipx_stats, NULL, "ipx", 0, 0 }, 295 { N_IPX, N_SPXSTAT, 1, ipxprotopr, 296 spx_stats, NULL, "spx", 0, 0 }, 297 { -1, -1, 0, NULL, 298 NULL, NULL, 0, 0, 0 } 299}; 300#endif 301 302struct protox *protoprotox[] = { 303 protox, 304#ifdef INET6 305 ip6protox, 306#endif 307#ifdef IPSEC 308 pfkeyprotox, 309#endif 310#ifdef IPX 311 ipxprotox, 312#endif 313 atalkprotox, NULL }; 314 315static void printproto(struct protox *, const char *); 316static void usage(void); 317static struct protox *name2protox(const char *); 318static struct protox *knownname(const char *); 319 320static kvm_t *kvmd; 321static char *nlistf = NULL, *memf = NULL; 322 323int Aflag; /* show addresses of protocol control block */ 324int aflag; /* show all sockets (including servers) */ 325int Bflag; /* show information about bpf consumers */ 326int bflag; /* show i/f total bytes in/out */ 327int dflag; /* show i/f dropped packets */ 328int gflag; /* show group (multicast) routing or stats */ 329int hflag; /* show counters in human readable format */ 330int iflag; /* show interfaces */ 331int Lflag; /* show size of listen queues */ 332int mflag; /* show memory stats */ 333int noutputs = 0; /* how much outputs before we exit */ 334int numeric_addr; /* show addresses numerically */ 335int numeric_port; /* show ports numerically */ 336static int pflag; /* show given protocol */ 337int Qflag; /* show netisr information */ 338int rflag; /* show routing tables (or routing stats) */ 339int sflag; /* show protocol statistics */ 340int Wflag; /* wide display */ 341int Tflag; /* TCP Information */ 342int xflag; /* extra information, includes all socket buffer info */ 343int zflag; /* zero stats */ 344 345int interval; /* repeat interval for i/f stats */ 346 347char *interface; /* desired i/f for stats, or NULL for all i/fs */ 348int unit; /* unit number for above */ 349 350int af; /* address family */ 351int live; /* true if we are examining a live system */ 352 353int 354main(int argc, char *argv[]) 355{ 356 struct protox *tp = NULL; /* for printing cblocks & stats */ 357 int ch; 358 359 af = AF_UNSPEC; 360 361 while ((ch = getopt(argc, argv, "AaBbdf:ghI:iLlM:mN:np:Qq:rSTsuWw:xz")) 362 != -1) 363 switch(ch) { 364 case 'A': 365 Aflag = 1; 366 break; 367 case 'a': 368 aflag = 1; 369 break; 370 case 'B': 371 Bflag = 1; 372 break; 373 case 'b': 374 bflag = 1; 375 break; 376 case 'd': 377 dflag = 1; 378 break; 379 case 'f': 380 if (strcmp(optarg, "ipx") == 0) 381 af = AF_IPX; 382 else if (strcmp(optarg, "inet") == 0) 383 af = AF_INET; 384#ifdef INET6 385 else if (strcmp(optarg, "inet6") == 0) 386 af = AF_INET6; 387#endif 388#ifdef IPSEC 389 else if (strcmp(optarg, "pfkey") == 0) 390 af = PF_KEY; 391#endif 392 else if (strcmp(optarg, "unix") == 0) 393 af = AF_UNIX; 394 else if (strcmp(optarg, "atalk") == 0) 395 af = AF_APPLETALK; 396#ifdef NETGRAPH 397 else if (strcmp(optarg, "ng") == 0 398 || strcmp(optarg, "netgraph") == 0) 399 af = AF_NETGRAPH; 400#endif 401 else if (strcmp(optarg, "link") == 0) 402 af = AF_LINK; 403 else { 404 errx(1, "%s: unknown address family", optarg); 405 } 406 break; 407 case 'g': 408 gflag = 1; 409 break; 410 case 'h': 411 hflag = 1; 412 break; 413 case 'I': { 414 char *cp; 415 416 iflag = 1; 417 for (cp = interface = optarg; isalpha(*cp); cp++) 418 continue; 419 unit = atoi(cp); 420 break; 421 } 422 case 'i': 423 iflag = 1; 424 break; 425 case 'L': 426 Lflag = 1; 427 break; 428 case 'M': 429 memf = optarg; 430 break; 431 case 'm': 432 mflag = 1; 433 break; 434 case 'N': 435 nlistf = optarg; 436 break; 437 case 'n': 438 numeric_addr = numeric_port = 1; 439 break; 440 case 'p': 441 if ((tp = name2protox(optarg)) == NULL) { 442 errx(1, 443 "%s: unknown or uninstrumented protocol", 444 optarg); 445 } 446 pflag = 1; 447 break; 448 case 'Q': 449 Qflag = 1; 450 break; 451 case 'q': 452 noutputs = atoi(optarg); 453 if (noutputs != 0) 454 noutputs++; 455 break; 456 case 'r': 457 rflag = 1; 458 break; 459 case 's': 460 ++sflag; 461 break; 462 case 'S': 463 numeric_addr = 1; 464 break; 465 case 'u': 466 af = AF_UNIX; 467 break; 468 case 'W': 469 case 'l': 470 Wflag = 1; 471 break; 472 case 'w': 473 interval = atoi(optarg); 474 iflag = 1; 475 break; 476 case 'T': 477 Tflag = 1; 478 break; 479 case 'x': 480 xflag = 1; 481 break; 482 case 'z': 483 zflag = 1; 484 break; 485 case '?': 486 default: 487 usage(); 488 } 489 argv += optind; 490 argc -= optind; 491 492#define BACKWARD_COMPATIBILITY 493#ifdef BACKWARD_COMPATIBILITY 494 if (*argv) { 495 if (isdigit(**argv)) { 496 interval = atoi(*argv); 497 if (interval <= 0) 498 usage(); 499 ++argv; 500 iflag = 1; 501 } 502 if (*argv) { 503 nlistf = *argv; 504 if (*++argv) 505 memf = *argv; 506 } 507 } 508#endif 509 510 /* 511 * Discard setgid privileges if not the running kernel so that bad 512 * guys can't print interesting stuff from kernel memory. 513 */ 514 live = (nlistf == NULL && memf == NULL); 515 if (!live) 516 setgid(getgid()); 517 518 if (xflag && Tflag) 519 errx(1, "-x and -T are incompatible, pick one."); 520 521 if (Bflag) { 522 if (!live) 523 usage(); 524 bpf_stats(interface); 525 exit(0); 526 } 527 if (mflag) { 528 if (!live) { 529 if (kread(0, NULL, 0) == 0) 530 mbpr(kvmd, nl[N_MBSTAT].n_value); 531 } else 532 mbpr(NULL, 0); 533 exit(0); 534 } 535 if (Qflag) { 536 if (!live) { 537 if (kread(0, NULL, 0) == 0) 538 netisr_stats(kvmd); 539 } else 540 netisr_stats(NULL); 541 exit(0); 542 } 543#if 0 544 /* 545 * Keep file descriptors open to avoid overhead 546 * of open/close on each call to get* routines. 547 */ 548 sethostent(1); 549 setnetent(1); 550#else 551 /* 552 * This does not make sense any more with DNS being default over 553 * the files. Doing a setXXXXent(1) causes a tcp connection to be 554 * used for the queries, which is slower. 555 */ 556#endif 557 kread(0, NULL, 0); 558 if (iflag && !sflag) { 559 intpr(interval, nl[N_IFNET].n_value, NULL); 560 exit(0); 561 } 562 if (rflag) { 563 if (sflag) 564 rt_stats(nl[N_RTSTAT].n_value, nl[N_RTTRASH].n_value); 565 else 566 routepr(nl[N_RTREE].n_value); 567 exit(0); 568 } 569 if (gflag) { 570 if (sflag) { 571 if (af == AF_INET || af == AF_UNSPEC) 572 mrt_stats(nl[N_MRTSTAT].n_value); 573#ifdef INET6 574 if (af == AF_INET6 || af == AF_UNSPEC) 575 mrt6_stats(nl[N_MRT6STAT].n_value); 576#endif 577 } else { 578 if (af == AF_INET || af == AF_UNSPEC) 579 mroutepr(nl[N_MFCHASHTBL].n_value, 580 nl[N_MFCTABLESIZE].n_value, 581 nl[N_VIFTABLE].n_value); 582#ifdef INET6 583 if (af == AF_INET6 || af == AF_UNSPEC) 584 mroute6pr(nl[N_MF6CTABLE].n_value, 585 nl[N_MIF6TABLE].n_value); 586#endif 587 } 588 exit(0); 589 } 590 591 if (tp) { 592 printproto(tp, tp->pr_name); 593 exit(0); 594 } 595 if (af == AF_INET || af == AF_UNSPEC) 596 for (tp = protox; tp->pr_name; tp++) 597 printproto(tp, tp->pr_name); 598#ifdef INET6 599 if (af == AF_INET6 || af == AF_UNSPEC) 600 for (tp = ip6protox; tp->pr_name; tp++) 601 printproto(tp, tp->pr_name); 602#endif /*INET6*/ 603#ifdef IPSEC 604 if (af == PF_KEY || af == AF_UNSPEC) 605 for (tp = pfkeyprotox; tp->pr_name; tp++) 606 printproto(tp, tp->pr_name); 607#endif /*IPSEC*/ 608#ifdef IPX 609 if (af == AF_IPX || af == AF_UNSPEC) { 610 for (tp = ipxprotox; tp->pr_name; tp++) 611 printproto(tp, tp->pr_name); 612 } 613#endif /* IPX */ 614 if (af == AF_APPLETALK || af == AF_UNSPEC) 615 for (tp = atalkprotox; tp->pr_name; tp++) 616 printproto(tp, tp->pr_name); 617#ifdef NETGRAPH 618 if (af == AF_NETGRAPH || af == AF_UNSPEC) 619 for (tp = netgraphprotox; tp->pr_name; tp++) 620 printproto(tp, tp->pr_name); 621#endif /* NETGRAPH */ 622 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 623 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, 624 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value, 625 nl[N_UNP_SPHEAD].n_value); 626 exit(0); 627} 628 629/* 630 * Print out protocol statistics or control blocks (per sflag). 631 * If the interface was not specifically requested, and the symbol 632 * is not in the namelist, ignore this one. 633 */ 634static void 635printproto(tp, name) 636 struct protox *tp; 637 const char *name; 638{ 639 void (*pr)(u_long, const char *, int, int); 640 u_long off; 641 642 if (sflag) { 643 if (iflag) { 644 if (tp->pr_istats) 645 intpr(interval, nl[N_IFNET].n_value, 646 tp->pr_istats); 647 else if (pflag) 648 printf("%s: no per-interface stats routine\n", 649 tp->pr_name); 650 return; 651 } else { 652 pr = tp->pr_stats; 653 if (!pr) { 654 if (pflag) 655 printf("%s: no stats routine\n", 656 tp->pr_name); 657 return; 658 } 659 if (tp->pr_usesysctl && live) 660 off = 0; 661 else if (tp->pr_sindex < 0) { 662 if (pflag) 663 printf( 664 "%s: stats routine doesn't work on cores\n", 665 tp->pr_name); 666 return; 667 } else 668 off = nl[tp->pr_sindex].n_value; 669 } 670 } else { 671 pr = tp->pr_cblocks; 672 if (!pr) { 673 if (pflag) 674 printf("%s: no PCB routine\n", tp->pr_name); 675 return; 676 } 677 if (tp->pr_usesysctl && live) 678 off = 0; 679 else if (tp->pr_index < 0) { 680 if (pflag) 681 printf( 682 "%s: PCB routine doesn't work on cores\n", 683 tp->pr_name); 684 return; 685 } else 686 off = nl[tp->pr_index].n_value; 687 } 688 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 689 af != AF_UNSPEC)) 690 (*pr)(off, name, af, tp->pr_protocol); 691} 692 693/* 694 * Read kernel memory, return 0 on success. 695 */ 696int 697kread(u_long addr, void *buf, size_t size) 698{ 699 char errbuf[_POSIX2_LINE_MAX]; 700 701 if (kvmd == NULL) { 702 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 703 setgid(getgid()); 704 if (kvmd != NULL) { 705 if (kvm_nlist(kvmd, nl) < 0) { 706 if (nlistf) 707 errx(1, "%s: kvm_nlist: %s", nlistf, 708 kvm_geterr(kvmd)); 709 else 710 errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 711 } 712 713 if (nl[0].n_type == 0) { 714 if (nlistf) 715 errx(1, "%s: no namelist", nlistf); 716 else 717 errx(1, "no namelist"); 718 } 719 } else { 720 warnx("kvm not available: %s", errbuf); 721 return(-1); 722 } 723 } 724 if (!buf) 725 return (0); 726 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 727 warnx("%s", kvm_geterr(kvmd)); 728 return (-1); 729 } 730 return (0); 731} 732 733const char * 734plural(uintmax_t n) 735{ 736 return (n != 1 ? "s" : ""); 737} 738 739const char * 740plurales(uintmax_t n) 741{ 742 return (n != 1 ? "es" : ""); 743} 744 745const char * 746pluralies(uintmax_t n) 747{ 748 return (n != 1 ? "ies" : "y"); 749} 750 751/* 752 * Find the protox for the given "well-known" name. 753 */ 754static struct protox * 755knownname(const char *name) 756{ 757 struct protox **tpp, *tp; 758 759 for (tpp = protoprotox; *tpp; tpp++) 760 for (tp = *tpp; tp->pr_name; tp++) 761 if (strcmp(tp->pr_name, name) == 0) 762 return (tp); 763 return (NULL); 764} 765 766/* 767 * Find the protox corresponding to name. 768 */ 769static struct protox * 770name2protox(const char *name) 771{ 772 struct protox *tp; 773 char **alias; /* alias from p->aliases */ 774 struct protoent *p; 775 776 /* 777 * Try to find the name in the list of "well-known" names. If that 778 * fails, check if name is an alias for an Internet protocol. 779 */ 780 if ((tp = knownname(name)) != NULL) 781 return (tp); 782 783 setprotoent(1); /* make protocol lookup cheaper */ 784 while ((p = getprotoent()) != NULL) { 785 /* assert: name not same as p->name */ 786 for (alias = p->p_aliases; *alias; alias++) 787 if (strcmp(name, *alias) == 0) { 788 endprotoent(); 789 return (knownname(p->p_name)); 790 } 791 } 792 endprotoent(); 793 return (NULL); 794} 795 796static void 797usage(void) 798{ 799 (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", 800"usage: netstat [-AaLnSTWx] [-f protocol_family | -p protocol]\n" 801" [-M core] [-N system]", 802" netstat -i | -I interface [-abdhnW] [-f address_family]\n" 803" [-M core] [-N system]", 804" netstat -w wait [-I interface] [-d] [-M core] [-N system] [-q howmany]", 805" netstat -s [-s] [-z] [-f protocol_family | -p protocol]\n" 806" [-M core] [-N system]", 807" netstat -i | -I interface -s [-f protocol_family | -p protocol]\n" 808" [-M core] [-N system]", 809" netstat -m [-M core] [-N system]", 810" netstat -B [-I interface]", 811" netstat -r [-AanW] [-f address_family] [-M core] [-N system]", 812" netstat -rs [-s] [-M core] [-N system]", 813" netstat -g [-W] [-f address_family] [-M core] [-N system]", 814" netstat -gs [-s] [-f address_family] [-M core] [-N system]", 815" netstat -Q"); 816 exit(1); 817} 818