main.c revision 263086
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: stable/10/usr.bin/netstat/main.c 263086 2014-03-12 10:45:58Z glebius $"); 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" }, /* XXXGL: can be deleted */ 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_RTTRASH 21 116 { .n_name = "_rttrash" }, 117#define N_CARPSTAT 22 118 { .n_name = "_carpstats" }, 119#define N_PFSYNCSTAT 23 120 { .n_name = "_pfsyncstats" }, 121#define N_AHSTAT 24 122 { .n_name = "_ahstat" }, 123#define N_ESPSTAT 25 124 { .n_name = "_espstat" }, 125#define N_IPCOMPSTAT 26 126 { .n_name = "_ipcompstat" }, 127#define N_TCPSTAT 27 128 { .n_name = "_tcpstat" }, 129#define N_UDPSTAT 28 130 { .n_name = "_udpstat" }, 131#define N_IPSTAT 29 132 { .n_name = "_ipstat" }, 133#define N_ICMPSTAT 30 134 { .n_name = "_icmpstat" }, 135#define N_IGMPSTAT 31 136 { .n_name = "_igmpstat" }, 137#define N_PIMSTAT 32 138 { .n_name = "_pimstat" }, 139#define N_TCBINFO 33 140 { .n_name = "_tcbinfo" }, 141#define N_UDBINFO 34 142 { .n_name = "_udbinfo" }, 143#define N_DIVCBINFO 35 144 { .n_name = "_divcbinfo" }, 145#define N_RIPCBINFO 36 146 { .n_name = "_ripcbinfo" }, 147#define N_UNP_COUNT 37 148 { .n_name = "_unp_count" }, 149#define N_UNP_GENCNT 38 150 { .n_name = "_unp_gencnt" }, 151#define N_UNP_DHEAD 39 152 { .n_name = "_unp_dhead" }, 153#define N_UNP_SHEAD 40 154 { .n_name = "_unp_shead" }, 155#define N_RIP6STAT 41 156 { .n_name = "_rip6stat" }, 157#define N_SCTPSTAT 42 158 { .n_name = "_sctpstat" }, 159#define N_MFCTABLESIZE 43 160 { .n_name = "_mfctablesize" }, 161#define N_ARPSTAT 44 162 { .n_name = "_arpstat" }, 163#define N_UNP_SPHEAD 45 164 { .n_name = "unp_sphead" }, 165#define N_SFSTAT 46 166 { .n_name = "_sfstat"}, 167 { .n_name = NULL }, 168}; 169 170struct protox { 171 int pr_index; /* index into nlist of cb head */ 172 int pr_sindex; /* index into nlist of stat block */ 173 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 174 void (*pr_cblocks)(u_long, const char *, int, int); 175 /* control blocks printing routine */ 176 void (*pr_stats)(u_long, const char *, int, int); 177 /* statistics printing routine */ 178 void (*pr_istats)(char *); /* per/if statistics printing routine */ 179 const char *pr_name; /* well-known name */ 180 int pr_usesysctl; /* non-zero if we use sysctl, not kvm */ 181 int pr_protocol; 182} protox[] = { 183 { N_TCBINFO, N_TCPSTAT, 1, protopr, 184 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 185 { N_UDBINFO, N_UDPSTAT, 1, protopr, 186 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 187#ifdef SCTP 188 { -1, N_SCTPSTAT, 1, sctp_protopr, 189 sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP }, 190#endif 191#ifdef SDP 192 { -1, -1, 1, protopr, 193 NULL, NULL, "sdp", 1, IPPROTO_TCP }, 194#endif 195 { N_DIVCBINFO, -1, 1, protopr, 196 NULL, NULL, "divert", 1, IPPROTO_DIVERT }, 197 { N_RIPCBINFO, N_IPSTAT, 1, protopr, 198 ip_stats, NULL, "ip", 1, IPPROTO_RAW }, 199 { N_RIPCBINFO, N_ICMPSTAT, 1, protopr, 200 icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP }, 201 { N_RIPCBINFO, N_IGMPSTAT, 1, protopr, 202 igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP }, 203#ifdef IPSEC 204 { -1, N_IPSECSTAT, 1, NULL, /* keep as compat */ 205 ipsec_stats, NULL, "ipsec", 0, 0}, 206 { -1, N_AHSTAT, 1, NULL, 207 ah_stats, NULL, "ah", 0, 0}, 208 { -1, N_ESPSTAT, 1, NULL, 209 esp_stats, NULL, "esp", 0, 0}, 210 { -1, N_IPCOMPSTAT, 1, NULL, 211 ipcomp_stats, NULL, "ipcomp", 0, 0}, 212#endif 213 { N_RIPCBINFO, N_PIMSTAT, 1, protopr, 214 pim_stats, NULL, "pim", 1, IPPROTO_PIM }, 215 { -1, N_CARPSTAT, 1, NULL, 216 carp_stats, NULL, "carp", 1, 0 }, 217#ifdef PF 218 { -1, N_PFSYNCSTAT, 1, NULL, 219 pfsync_stats, NULL, "pfsync", 1, 0 }, 220#endif 221 { -1, N_ARPSTAT, 1, NULL, 222 arp_stats, NULL, "arp", 1, 0 }, 223 { -1, -1, 0, NULL, 224 NULL, NULL, NULL, 0, 0 } 225}; 226 227#ifdef INET6 228struct protox ip6protox[] = { 229 { N_TCBINFO, N_TCPSTAT, 1, protopr, 230 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 231 { N_UDBINFO, N_UDPSTAT, 1, protopr, 232 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 233 { N_RIPCBINFO, N_IP6STAT, 1, protopr, 234 ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW }, 235 { N_RIPCBINFO, N_ICMP6STAT, 1, protopr, 236 icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 }, 237#ifdef SDP 238 { -1, -1, 1, protopr, 239 NULL, NULL, "sdp", 1, IPPROTO_TCP }, 240#endif 241#ifdef IPSEC 242 { -1, N_IPSEC6STAT, 1, NULL, 243 ipsec_stats, NULL, "ipsec6", 0, 0 }, 244#endif 245#ifdef notyet 246 { -1, N_PIM6STAT, 1, NULL, 247 pim6_stats, NULL, "pim6", 1, 0 }, 248#endif 249 { -1, N_RIP6STAT, 1, NULL, 250 rip6_stats, NULL, "rip6", 1, 0 }, 251 { -1, -1, 0, NULL, 252 NULL, NULL, NULL, 0, 0 } 253}; 254#endif /*INET6*/ 255 256#ifdef IPSEC 257struct protox pfkeyprotox[] = { 258 { -1, N_PFKEYSTAT, 1, NULL, 259 pfkey_stats, NULL, "pfkey", 0, 0 }, 260 { -1, -1, 0, NULL, 261 NULL, NULL, NULL, 0, 0 } 262}; 263#endif 264 265struct protox atalkprotox[] = { 266 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, 267 ddp_stats, NULL, "ddp", 0, 0 }, 268 { -1, -1, 0, NULL, 269 NULL, NULL, NULL, 0, 0 } 270}; 271#ifdef NETGRAPH 272struct protox netgraphprotox[] = { 273 { N_NGSOCKS, -1, 1, netgraphprotopr, 274 NULL, NULL, "ctrl", 0, 0 }, 275 { N_NGSOCKS, -1, 1, netgraphprotopr, 276 NULL, NULL, "data", 0, 0 }, 277 { -1, -1, 0, NULL, 278 NULL, NULL, NULL, 0, 0 } 279}; 280#endif 281#ifdef IPX 282struct protox ipxprotox[] = { 283 { N_IPX, N_IPXSTAT, 1, ipxprotopr, 284 ipx_stats, NULL, "ipx", 0, 0 }, 285 { N_IPX, N_SPXSTAT, 1, ipxprotopr, 286 spx_stats, NULL, "spx", 0, 0 }, 287 { -1, -1, 0, NULL, 288 NULL, NULL, 0, 0, 0 } 289}; 290#endif 291 292struct protox *protoprotox[] = { 293 protox, 294#ifdef INET6 295 ip6protox, 296#endif 297#ifdef IPSEC 298 pfkeyprotox, 299#endif 300#ifdef IPX 301 ipxprotox, 302#endif 303 atalkprotox, NULL }; 304 305static void printproto(struct protox *, const char *); 306static void usage(void); 307static struct protox *name2protox(const char *); 308static struct protox *knownname(const char *); 309 310static kvm_t *kvmd; 311static char *nlistf = NULL, *memf = NULL; 312 313int Aflag; /* show addresses of protocol control block */ 314int aflag; /* show all sockets (including servers) */ 315int Bflag; /* show information about bpf consumers */ 316int bflag; /* show i/f total bytes in/out */ 317int dflag; /* show i/f dropped packets */ 318int gflag; /* show group (multicast) routing or stats */ 319int hflag; /* show counters in human readable format */ 320int iflag; /* show interfaces */ 321int Lflag; /* show size of listen queues */ 322int mflag; /* show memory stats */ 323int noutputs = 0; /* how much outputs before we exit */ 324int numeric_addr; /* show addresses numerically */ 325int numeric_port; /* show ports numerically */ 326static int pflag; /* show given protocol */ 327int Qflag; /* show netisr information */ 328int rflag; /* show routing tables (or routing stats) */ 329int sflag; /* show protocol statistics */ 330int Wflag; /* wide display */ 331int Tflag; /* TCP Information */ 332int xflag; /* extra information, includes all socket buffer info */ 333int zflag; /* zero stats */ 334 335int interval; /* repeat interval for i/f stats */ 336 337char *interface; /* desired i/f for stats, or NULL for all i/fs */ 338int unit; /* unit number for above */ 339 340int af; /* address family */ 341int live; /* true if we are examining a live system */ 342 343int 344main(int argc, char *argv[]) 345{ 346 struct protox *tp = NULL; /* for printing cblocks & stats */ 347 int ch; 348 int fib = -1; 349 char *endptr; 350 351 af = AF_UNSPEC; 352 353 while ((ch = getopt(argc, argv, "AaBbdF:f:ghI:iLlM:mN:np:Qq:rSTsuWw:xz")) 354 != -1) 355 switch(ch) { 356 case 'A': 357 Aflag = 1; 358 break; 359 case 'a': 360 aflag = 1; 361 break; 362 case 'B': 363 Bflag = 1; 364 break; 365 case 'b': 366 bflag = 1; 367 break; 368 case 'd': 369 dflag = 1; 370 break; 371 case 'F': 372 fib = strtol(optarg, &endptr, 0); 373 if (*endptr != '\0' || 374 (fib == 0 && (errno == EINVAL || errno == ERANGE))) 375 errx(1, "%s: invalid fib", optarg); 376 break; 377 case 'f': 378 if (strcmp(optarg, "ipx") == 0) 379 af = AF_IPX; 380 else if (strcmp(optarg, "inet") == 0) 381 af = AF_INET; 382#ifdef INET6 383 else if (strcmp(optarg, "inet6") == 0) 384 af = AF_INET6; 385#endif 386#ifdef IPSEC 387 else if (strcmp(optarg, "pfkey") == 0) 388 af = PF_KEY; 389#endif 390 else if (strcmp(optarg, "unix") == 0) 391 af = AF_UNIX; 392 else if (strcmp(optarg, "atalk") == 0) 393 af = AF_APPLETALK; 394#ifdef NETGRAPH 395 else if (strcmp(optarg, "ng") == 0 396 || strcmp(optarg, "netgraph") == 0) 397 af = AF_NETGRAPH; 398#endif 399 else if (strcmp(optarg, "link") == 0) 400 af = AF_LINK; 401 else { 402 errx(1, "%s: unknown address family", optarg); 403 } 404 break; 405 case 'g': 406 gflag = 1; 407 break; 408 case 'h': 409 hflag = 1; 410 break; 411 case 'I': { 412 char *cp; 413 414 iflag = 1; 415 for (cp = interface = optarg; isalpha(*cp); cp++) 416 continue; 417 unit = atoi(cp); 418 break; 419 } 420 case 'i': 421 iflag = 1; 422 break; 423 case 'L': 424 Lflag = 1; 425 break; 426 case 'M': 427 memf = optarg; 428 break; 429 case 'm': 430 mflag = 1; 431 break; 432 case 'N': 433 nlistf = optarg; 434 break; 435 case 'n': 436 numeric_addr = numeric_port = 1; 437 break; 438 case 'p': 439 if ((tp = name2protox(optarg)) == NULL) { 440 errx(1, 441 "%s: unknown or uninstrumented protocol", 442 optarg); 443 } 444 pflag = 1; 445 break; 446 case 'Q': 447 Qflag = 1; 448 break; 449 case 'q': 450 noutputs = atoi(optarg); 451 if (noutputs != 0) 452 noutputs++; 453 break; 454 case 'r': 455 rflag = 1; 456 break; 457 case 's': 458 ++sflag; 459 break; 460 case 'S': 461 numeric_addr = 1; 462 break; 463 case 'u': 464 af = AF_UNIX; 465 break; 466 case 'W': 467 case 'l': 468 Wflag = 1; 469 break; 470 case 'w': 471 interval = atoi(optarg); 472 iflag = 1; 473 break; 474 case 'T': 475 Tflag = 1; 476 break; 477 case 'x': 478 xflag = 1; 479 break; 480 case 'z': 481 zflag = 1; 482 break; 483 case '?': 484 default: 485 usage(); 486 } 487 argv += optind; 488 argc -= optind; 489 490#define BACKWARD_COMPATIBILITY 491#ifdef BACKWARD_COMPATIBILITY 492 if (*argv) { 493 if (isdigit(**argv)) { 494 interval = atoi(*argv); 495 if (interval <= 0) 496 usage(); 497 ++argv; 498 iflag = 1; 499 } 500 if (*argv) { 501 nlistf = *argv; 502 if (*++argv) 503 memf = *argv; 504 } 505 } 506#endif 507 508 /* 509 * Discard setgid privileges if not the running kernel so that bad 510 * guys can't print interesting stuff from kernel memory. 511 */ 512 live = (nlistf == NULL && memf == NULL); 513 if (!live) 514 setgid(getgid()); 515 516 if (xflag && Tflag) 517 errx(1, "-x and -T are incompatible, pick one."); 518 519 if (Bflag) { 520 if (!live) 521 usage(); 522 bpf_stats(interface); 523 exit(0); 524 } 525 if (mflag) { 526 if (!live) { 527 if (kread(0, NULL, 0) == 0) 528 mbpr(kvmd, nl[N_SFSTAT].n_value); 529 } else 530 mbpr(NULL, 0); 531 exit(0); 532 } 533 if (Qflag) { 534 if (!live) { 535 if (kread(0, NULL, 0) == 0) 536 netisr_stats(kvmd); 537 } else 538 netisr_stats(NULL); 539 exit(0); 540 } 541#if 0 542 /* 543 * Keep file descriptors open to avoid overhead 544 * of open/close on each call to get* routines. 545 */ 546 sethostent(1); 547 setnetent(1); 548#else 549 /* 550 * This does not make sense any more with DNS being default over 551 * the files. Doing a setXXXXent(1) causes a tcp connection to be 552 * used for the queries, which is slower. 553 */ 554#endif 555 kread(0, NULL, 0); 556 if (iflag && !sflag) { 557 intpr(interval, NULL); 558 exit(0); 559 } 560 if (rflag) { 561 if (sflag) { 562 rt_stats(nl[N_RTSTAT].n_value, nl[N_RTTRASH].n_value); 563 flowtable_stats(); 564 } else 565 routepr(nl[N_RTREE].n_value, fib); 566 exit(0); 567 } 568 if (gflag) { 569 if (sflag) { 570 if (af == AF_INET || af == AF_UNSPEC) 571 mrt_stats(nl[N_MRTSTAT].n_value); 572#ifdef INET6 573 if (af == AF_INET6 || af == AF_UNSPEC) 574 mrt6_stats(nl[N_MRT6STAT].n_value); 575#endif 576 } else { 577 if (af == AF_INET || af == AF_UNSPEC) 578 mroutepr(nl[N_MFCHASHTBL].n_value, 579 nl[N_MFCTABLESIZE].n_value, 580 nl[N_VIFTABLE].n_value); 581#ifdef INET6 582 if (af == AF_INET6 || af == AF_UNSPEC) 583 mroute6pr(nl[N_MF6CTABLE].n_value, 584 nl[N_MIF6TABLE].n_value); 585#endif 586 } 587 exit(0); 588 } 589 590 if (tp) { 591 printproto(tp, tp->pr_name); 592 exit(0); 593 } 594 if (af == AF_INET || af == AF_UNSPEC) 595 for (tp = protox; tp->pr_name; tp++) 596 printproto(tp, tp->pr_name); 597#ifdef INET6 598 if (af == AF_INET6 || af == AF_UNSPEC) 599 for (tp = ip6protox; tp->pr_name; tp++) 600 printproto(tp, tp->pr_name); 601#endif /*INET6*/ 602#ifdef IPSEC 603 if (af == PF_KEY || af == AF_UNSPEC) 604 for (tp = pfkeyprotox; tp->pr_name; tp++) 605 printproto(tp, tp->pr_name); 606#endif /*IPSEC*/ 607#ifdef IPX 608 if (af == AF_IPX || af == AF_UNSPEC) { 609 for (tp = ipxprotox; tp->pr_name; tp++) 610 printproto(tp, tp->pr_name); 611 } 612#endif /* IPX */ 613 if (af == AF_APPLETALK || af == AF_UNSPEC) 614 for (tp = atalkprotox; tp->pr_name; tp++) 615 printproto(tp, tp->pr_name); 616#ifdef NETGRAPH 617 if (af == AF_NETGRAPH || af == AF_UNSPEC) 618 for (tp = netgraphprotox; tp->pr_name; tp++) 619 printproto(tp, tp->pr_name); 620#endif /* NETGRAPH */ 621 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 622 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, 623 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value, 624 nl[N_UNP_SPHEAD].n_value); 625 exit(0); 626} 627 628/* 629 * Print out protocol statistics or control blocks (per sflag). 630 * If the interface was not specifically requested, and the symbol 631 * is not in the namelist, ignore this one. 632 */ 633static void 634printproto(struct protox *tp, const char *name) 635{ 636 void (*pr)(u_long, const char *, int, int); 637 u_long off; 638 639 if (sflag) { 640 if (iflag) { 641 if (tp->pr_istats) 642 intpr(interval, tp->pr_istats); 643 else if (pflag) 644 printf("%s: no per-interface stats routine\n", 645 tp->pr_name); 646 return; 647 } else { 648 pr = tp->pr_stats; 649 if (!pr) { 650 if (pflag) 651 printf("%s: no stats routine\n", 652 tp->pr_name); 653 return; 654 } 655 if (tp->pr_usesysctl && live) 656 off = 0; 657 else if (tp->pr_sindex < 0) { 658 if (pflag) 659 printf( 660 "%s: stats routine doesn't work on cores\n", 661 tp->pr_name); 662 return; 663 } else 664 off = nl[tp->pr_sindex].n_value; 665 } 666 } else { 667 pr = tp->pr_cblocks; 668 if (!pr) { 669 if (pflag) 670 printf("%s: no PCB routine\n", tp->pr_name); 671 return; 672 } 673 if (tp->pr_usesysctl && live) 674 off = 0; 675 else if (tp->pr_index < 0) { 676 if (pflag) 677 printf( 678 "%s: PCB routine doesn't work on cores\n", 679 tp->pr_name); 680 return; 681 } else 682 off = nl[tp->pr_index].n_value; 683 } 684 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 685 af != AF_UNSPEC)) 686 (*pr)(off, name, af, tp->pr_protocol); 687} 688 689static int 690kvmd_init(void) 691{ 692 char errbuf[_POSIX2_LINE_MAX]; 693 694 if (kvmd != NULL) 695 return (0); 696 697 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 698 setgid(getgid()); 699 700 if (kvmd == NULL) { 701 warnx("kvm not available: %s", errbuf); 702 return (-1); 703 } 704 705 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 } 719 720 return (0); 721} 722 723/* 724 * Read kernel memory, return 0 on success. 725 */ 726int 727kread(u_long addr, void *buf, size_t size) 728{ 729 730 if (kvmd_init() < 0) 731 return (-1); 732 733 if (!buf) 734 return (0); 735 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 736 warnx("%s", kvm_geterr(kvmd)); 737 return (-1); 738 } 739 return (0); 740} 741 742/* 743 * Read an array of N counters in kernel memory into array of N uint64_t's. 744 */ 745int 746kread_counters(u_long addr, void *buf, size_t size) 747{ 748 uint64_t *c = buf; 749 750 if (kvmd_init() < 0) 751 return (-1); 752 753 if (kread(addr, buf, size) < 0) 754 return (-1); 755 756 while (size != 0) { 757 *c = kvm_counter_u64_fetch(kvmd, *c); 758 size -= sizeof(*c); 759 c++; 760 } 761 return (0); 762} 763 764const char * 765plural(uintmax_t n) 766{ 767 return (n != 1 ? "s" : ""); 768} 769 770const char * 771plurales(uintmax_t n) 772{ 773 return (n != 1 ? "es" : ""); 774} 775 776const char * 777pluralies(uintmax_t n) 778{ 779 return (n != 1 ? "ies" : "y"); 780} 781 782/* 783 * Find the protox for the given "well-known" name. 784 */ 785static struct protox * 786knownname(const char *name) 787{ 788 struct protox **tpp, *tp; 789 790 for (tpp = protoprotox; *tpp; tpp++) 791 for (tp = *tpp; tp->pr_name; tp++) 792 if (strcmp(tp->pr_name, name) == 0) 793 return (tp); 794 return (NULL); 795} 796 797/* 798 * Find the protox corresponding to name. 799 */ 800static struct protox * 801name2protox(const char *name) 802{ 803 struct protox *tp; 804 char **alias; /* alias from p->aliases */ 805 struct protoent *p; 806 807 /* 808 * Try to find the name in the list of "well-known" names. If that 809 * fails, check if name is an alias for an Internet protocol. 810 */ 811 if ((tp = knownname(name)) != NULL) 812 return (tp); 813 814 setprotoent(1); /* make protocol lookup cheaper */ 815 while ((p = getprotoent()) != NULL) { 816 /* assert: name not same as p->name */ 817 for (alias = p->p_aliases; *alias; alias++) 818 if (strcmp(name, *alias) == 0) { 819 endprotoent(); 820 return (knownname(p->p_name)); 821 } 822 } 823 endprotoent(); 824 return (NULL); 825} 826 827static void 828usage(void) 829{ 830 (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", 831"usage: netstat [-AaLnSTWx] [-f protocol_family | -p protocol]\n" 832" [-M core] [-N system]", 833" netstat -i | -I interface [-abdhnW] [-f address_family]\n" 834" [-M core] [-N system]", 835" netstat -w wait [-I interface] [-d] [-M core] [-N system] [-q howmany]", 836" netstat -s [-s] [-z] [-f protocol_family | -p protocol]\n" 837" [-M core] [-N system]", 838" netstat -i | -I interface -s [-f protocol_family | -p protocol]\n" 839" [-M core] [-N system]", 840" netstat -m [-M core] [-N system]", 841" netstat -B [-I interface]", 842" netstat -r [-AanW] [-f address_family] [-M core] [-N system]", 843" netstat -rs [-s] [-M core] [-N system]", 844" netstat -g [-W] [-f address_family] [-M core] [-N system]", 845" netstat -gs [-s] [-f address_family] [-M core] [-N system]", 846" netstat -Q"); 847 exit(1); 848} 849