main.c revision 202060
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 * 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. 20 * 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 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35char const copyright[] = 36"@(#) Copyright (c) 1983, 1988, 1993\n\ 37 Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#if 0 41#ifndef lint 42static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94"; 43#endif /* not lint */ 44#endif 45 46#include <sys/cdefs.h> 47__FBSDID("$FreeBSD: head/usr.bin/netstat/main.c 202060 2010-01-11 03:00:17Z delphij $"); 48 49#include <sys/param.h> 50#include <sys/file.h> 51#include <sys/protosw.h> 52#include <sys/socket.h> 53#include <sys/socketvar.h> 54 55#include <netinet/in.h> 56 57#ifdef NETGRAPH 58#include <netgraph/ng_socket.h> 59#endif 60 61#include <ctype.h> 62#include <err.h> 63#include <errno.h> 64#include <kvm.h> 65#include <limits.h> 66#include <netdb.h> 67#include <nlist.h> 68#include <paths.h> 69#include <stdint.h> 70#include <stdio.h> 71#include <stdlib.h> 72#include <string.h> 73#include <unistd.h> 74#include "netstat.h" 75 76static struct nlist nl[] = { 77#define N_IFNET 0 78 { .n_name = "_ifnet" }, 79#define N_RTSTAT 1 80 { .n_name = "_rtstat" }, 81#define N_RTREE 2 82 { .n_name = "_rt_tables"}, 83#define N_MRTSTAT 3 84 { .n_name = "_mrtstat" }, 85#define N_MFCHASHTBL 4 86 { .n_name = "_mfchashtbl" }, 87#define N_VIFTABLE 5 88 { .n_name = "_viftable" }, 89#define N_IPX 6 90 { .n_name = "_ipxpcb_list"}, 91#define N_IPXSTAT 7 92 { .n_name = "_ipxstat"}, 93#define N_SPXSTAT 8 94 { .n_name = "_spx_istat"}, 95#define N_DDPSTAT 9 96 { .n_name = "_ddpstat"}, 97#define N_DDPCB 10 98 { .n_name = "_ddpcb"}, 99#define N_NGSOCKS 11 100 { .n_name = "_ngsocklist"}, 101#define N_IP6STAT 12 102 { .n_name = "_ip6stat" }, 103#define N_ICMP6STAT 13 104 { .n_name = "_icmp6stat" }, 105#define N_IPSECSTAT 14 106 { .n_name = "_ipsec4stat" }, 107#define N_IPSEC6STAT 15 108 { .n_name = "_ipsec6stat" }, 109#define N_PIM6STAT 16 110 { .n_name = "_pim6stat" }, 111#define N_MRT6STAT 17 112 { .n_name = "_mrt6stat" }, 113#define N_MF6CTABLE 18 114 { .n_name = "_mf6ctable" }, 115#define N_MIF6TABLE 19 116 { .n_name = "_mif6table" }, 117#define N_PFKEYSTAT 20 118 { .n_name = "_pfkeystat" }, 119#define N_MBSTAT 21 120 { .n_name = "_mbstat" }, 121#define N_MBTYPES 22 122 { .n_name = "_mbtypes" }, 123#define N_NMBCLUSTERS 23 124 { .n_name = "_nmbclusters" }, 125#define N_NMBUFS 24 126 { .n_name = "_nmbufs" }, 127#define N_MBHI 25 128 { .n_name = "_mbuf_hiwm" }, 129#define N_CLHI 26 130 { .n_name = "_clust_hiwm" }, 131#define N_NCPUS 27 132 { .n_name = "_smp_cpus" }, 133#define N_PAGESZ 28 134 { .n_name = "_pagesize" }, 135#define N_MBPSTAT 29 136 { .n_name = "_mb_statpcpu" }, 137#define N_RTTRASH 30 138 { .n_name = "_rttrash" }, 139#define N_MBLO 31 140 { .n_name = "_mbuf_lowm" }, 141#define N_CLLO 32 142 { .n_name = "_clust_lowm" }, 143#define N_CARPSTAT 33 144 { .n_name = "_carpstats" }, 145#define N_PFSYNCSTAT 34 146 { .n_name = "_pfsyncstats" }, 147#define N_AHSTAT 35 148 { .n_name = "_ahstat" }, 149#define N_ESPSTAT 36 150 { .n_name = "_espstat" }, 151#define N_IPCOMPSTAT 37 152 { .n_name = "_ipcompstat" }, 153#define N_TCPSTAT 38 154 { .n_name = "_tcpstat" }, 155#define N_UDPSTAT 39 156 { .n_name = "_udpstat" }, 157#define N_IPSTAT 40 158 { .n_name = "_ipstat" }, 159#define N_ICMPSTAT 41 160 { .n_name = "_icmpstat" }, 161#define N_IGMPSTAT 42 162 { .n_name = "_igmpstat" }, 163#define N_PIMSTAT 43 164 { .n_name = "_pimstat" }, 165#define N_TCBINFO 44 166 { .n_name = "_tcbinfo" }, 167#define N_UDBINFO 45 168 { .n_name = "_udbinfo" }, 169#define N_DIVCBINFO 46 170 { .n_name = "_divcbinfo" }, 171#define N_RIPCBINFO 47 172 { .n_name = "_ripcbinfo" }, 173#define N_UNP_COUNT 48 174 { .n_name = "_unp_count" }, 175#define N_UNP_GENCNT 49 176 { .n_name = "_unp_gencnt" }, 177#define N_UNP_DHEAD 50 178 { .n_name = "_unp_dhead" }, 179#define N_UNP_SHEAD 51 180 { .n_name = "_unp_shead" }, 181#define N_RIP6STAT 52 182 { .n_name = "_rip6stat" }, 183#define N_SCTPSTAT 53 184 { .n_name = "_sctpstat" }, 185#define N_MFCTABLESIZE 54 186 { .n_name = "_mfctablesize" }, 187#define N_ARPSTAT 55 188 { .n_name = "_arpstat" }, 189#define N_UNP_SPHEAD 56 190 { .n_name = "unp_sphead" }, 191 { .n_name = NULL }, 192}; 193 194struct protox { 195 int pr_index; /* index into nlist of cb head */ 196 int pr_sindex; /* index into nlist of stat block */ 197 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 198 void (*pr_cblocks)(u_long, const char *, int, int); 199 /* control blocks printing routine */ 200 void (*pr_stats)(u_long, const char *, int, int); 201 /* statistics printing routine */ 202 void (*pr_istats)(char *); /* per/if statistics printing routine */ 203 const char *pr_name; /* well-known name */ 204 int pr_usesysctl; /* non-zero if we use sysctl, not kvm */ 205 int pr_protocol; 206} protox[] = { 207 { N_TCBINFO, N_TCPSTAT, 1, protopr, 208 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 209 { N_UDBINFO, N_UDPSTAT, 1, protopr, 210 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 211#ifdef SCTP 212 { -1, N_SCTPSTAT, 1, sctp_protopr, 213 sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP }, 214#endif 215 { N_DIVCBINFO, -1, 1, protopr, 216 NULL, NULL, "divert", 1, IPPROTO_DIVERT }, 217 { N_RIPCBINFO, N_IPSTAT, 1, protopr, 218 ip_stats, NULL, "ip", 1, IPPROTO_RAW }, 219 { N_RIPCBINFO, N_ICMPSTAT, 1, protopr, 220 icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP }, 221 { N_RIPCBINFO, N_IGMPSTAT, 1, protopr, 222 igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP }, 223#ifdef IPSEC 224 { -1, N_IPSECSTAT, 1, NULL, /* keep as compat */ 225 ipsec_stats, NULL, "ipsec", 0, 0}, 226 { -1, N_AHSTAT, 1, NULL, 227 ah_stats, NULL, "ah", 0, 0}, 228 { -1, N_ESPSTAT, 1, NULL, 229 esp_stats, NULL, "esp", 0, 0}, 230 { -1, N_IPCOMPSTAT, 1, NULL, 231 ipcomp_stats, NULL, "ipcomp", 0, 0}, 232#endif 233 { N_RIPCBINFO, N_PIMSTAT, 1, protopr, 234 pim_stats, NULL, "pim", 1, IPPROTO_PIM }, 235 { -1, N_CARPSTAT, 1, NULL, 236 carp_stats, NULL, "carp", 1, 0 }, 237 { -1, N_PFSYNCSTAT, 1, NULL, 238 pfsync_stats, NULL, "pfsync", 1, 0 }, 239 { -1, N_ARPSTAT, 1, NULL, 240 arp_stats, NULL, "arp", 1, 0 }, 241 { -1, -1, 0, NULL, 242 NULL, NULL, NULL, 0, 0 } 243}; 244 245#ifdef INET6 246struct protox ip6protox[] = { 247 { N_TCBINFO, N_TCPSTAT, 1, protopr, 248 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 249 { N_UDBINFO, N_UDPSTAT, 1, protopr, 250 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 251 { N_RIPCBINFO, N_IP6STAT, 1, protopr, 252 ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW }, 253 { N_RIPCBINFO, N_ICMP6STAT, 1, protopr, 254 icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 }, 255#ifdef IPSEC 256 { -1, N_IPSEC6STAT, 1, NULL, 257 ipsec_stats, NULL, "ipsec6", 0, 0 }, 258#endif 259#ifdef notyet 260 { -1, N_PIM6STAT, 1, NULL, 261 pim6_stats, NULL, "pim6", 1, 0 }, 262#endif 263 { -1, N_RIP6STAT, 1, NULL, 264 rip6_stats, NULL, "rip6", 1, 0 }, 265 { -1, -1, 0, NULL, 266 NULL, NULL, NULL, 0, 0 } 267}; 268#endif /*INET6*/ 269 270#ifdef IPSEC 271struct protox pfkeyprotox[] = { 272 { -1, N_PFKEYSTAT, 1, NULL, 273 pfkey_stats, NULL, "pfkey", 0, 0 }, 274 { -1, -1, 0, NULL, 275 NULL, NULL, NULL, 0, 0 } 276}; 277#endif 278 279struct protox atalkprotox[] = { 280 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, 281 ddp_stats, NULL, "ddp", 0, 0 }, 282 { -1, -1, 0, NULL, 283 NULL, NULL, NULL, 0, 0 } 284}; 285#ifdef NETGRAPH 286struct protox netgraphprotox[] = { 287 { N_NGSOCKS, -1, 1, netgraphprotopr, 288 NULL, NULL, "ctrl", 0, 0 }, 289 { N_NGSOCKS, -1, 1, netgraphprotopr, 290 NULL, NULL, "data", 0, 0 }, 291 { -1, -1, 0, NULL, 292 NULL, NULL, NULL, 0, 0 } 293}; 294#endif 295#ifdef IPX 296struct protox ipxprotox[] = { 297 { N_IPX, N_IPXSTAT, 1, ipxprotopr, 298 ipx_stats, NULL, "ipx", 0, 0 }, 299 { N_IPX, N_SPXSTAT, 1, ipxprotopr, 300 spx_stats, NULL, "spx", 0, 0 }, 301 { -1, -1, 0, NULL, 302 NULL, NULL, 0, 0, 0 } 303}; 304#endif 305 306struct protox *protoprotox[] = { 307 protox, 308#ifdef INET6 309 ip6protox, 310#endif 311#ifdef IPSEC 312 pfkeyprotox, 313#endif 314#ifdef IPX 315 ipxprotox, 316#endif 317 atalkprotox, NULL }; 318 319static void printproto(struct protox *, const char *); 320static void usage(void); 321static struct protox *name2protox(const char *); 322static struct protox *knownname(const char *); 323 324static kvm_t *kvmd; 325static char *nlistf = NULL, *memf = NULL; 326 327int Aflag; /* show addresses of protocol control block */ 328int aflag; /* show all sockets (including servers) */ 329int Bflag; /* show information about bpf consumers */ 330int bflag; /* show i/f total bytes in/out */ 331int dflag; /* show i/f dropped packets */ 332int gflag; /* show group (multicast) routing or stats */ 333int hflag; /* show counters in human readable format */ 334int iflag; /* show interfaces */ 335int Lflag; /* show size of listen queues */ 336int mflag; /* show memory stats */ 337int noutputs = 0; /* how much outputs before we exit */ 338int numeric_addr; /* show addresses numerically */ 339int numeric_port; /* show ports numerically */ 340static int pflag; /* show given protocol */ 341int rflag; /* show routing tables (or routing stats) */ 342int sflag; /* show protocol statistics */ 343int Wflag; /* wide display */ 344int xflag; /* extra information, includes all socket buffer info */ 345int zflag; /* zero stats */ 346 347int interval; /* repeat interval for i/f stats */ 348 349char *interface; /* desired i/f for stats, or NULL for all i/fs */ 350int unit; /* unit number for above */ 351 352int af; /* address family */ 353int live; /* true if we are examining a live system */ 354 355int 356main(int argc, char *argv[]) 357{ 358 struct protox *tp = NULL; /* for printing cblocks & stats */ 359 int ch; 360 361 af = AF_UNSPEC; 362 363 while ((ch = getopt(argc, argv, "AaBbdf:ghI:iLlM:mN:np:q:rSsuWw:xz")) != -1) 364 switch(ch) { 365 case 'A': 366 Aflag = 1; 367 break; 368 case 'a': 369 aflag = 1; 370 break; 371 case 'B': 372 Bflag = 1; 373 break; 374 case 'b': 375 bflag = 1; 376 break; 377 case 'd': 378 dflag = 1; 379 break; 380 case 'f': 381 if (strcmp(optarg, "ipx") == 0) 382 af = AF_IPX; 383 else if (strcmp(optarg, "inet") == 0) 384 af = AF_INET; 385#ifdef INET6 386 else if (strcmp(optarg, "inet6") == 0) 387 af = AF_INET6; 388#endif 389#ifdef IPSEC 390 else if (strcmp(optarg, "pfkey") == 0) 391 af = PF_KEY; 392#endif 393 else if (strcmp(optarg, "unix") == 0) 394 af = AF_UNIX; 395 else if (strcmp(optarg, "atalk") == 0) 396 af = AF_APPLETALK; 397#ifdef NETGRAPH 398 else if (strcmp(optarg, "ng") == 0 399 || strcmp(optarg, "netgraph") == 0) 400 af = AF_NETGRAPH; 401#endif 402 else if (strcmp(optarg, "link") == 0) 403 af = AF_LINK; 404 else { 405 errx(1, "%s: unknown address family", optarg); 406 } 407 break; 408 case 'g': 409 gflag = 1; 410 break; 411 case 'h': 412 hflag = 1; 413 break; 414 case 'I': { 415 char *cp; 416 417 iflag = 1; 418 for (cp = interface = optarg; isalpha(*cp); cp++) 419 continue; 420 unit = atoi(cp); 421 break; 422 } 423 case 'i': 424 iflag = 1; 425 break; 426 case 'L': 427 Lflag = 1; 428 break; 429 case 'M': 430 memf = optarg; 431 break; 432 case 'm': 433 mflag = 1; 434 break; 435 case 'N': 436 nlistf = optarg; 437 break; 438 case 'n': 439 numeric_addr = numeric_port = 1; 440 break; 441 case 'p': 442 if ((tp = name2protox(optarg)) == NULL) { 443 errx(1, 444 "%s: unknown or uninstrumented protocol", 445 optarg); 446 } 447 pflag = 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 'x': 475 xflag = 1; 476 break; 477 case 'z': 478 zflag = 1; 479 break; 480 case '?': 481 default: 482 usage(); 483 } 484 argv += optind; 485 argc -= optind; 486 487#define BACKWARD_COMPATIBILITY 488#ifdef BACKWARD_COMPATIBILITY 489 if (*argv) { 490 if (isdigit(**argv)) { 491 interval = atoi(*argv); 492 if (interval <= 0) 493 usage(); 494 ++argv; 495 iflag = 1; 496 } 497 if (*argv) { 498 nlistf = *argv; 499 if (*++argv) 500 memf = *argv; 501 } 502 } 503#endif 504 505 /* 506 * Discard setgid privileges if not the running kernel so that bad 507 * guys can't print interesting stuff from kernel memory. 508 */ 509 live = (nlistf == NULL && memf == NULL); 510 if (!live) 511 setgid(getgid()); 512 513 if (Bflag) { 514 if (!live) 515 usage(); 516 bpf_stats(interface); 517 exit(0); 518 } 519 if (mflag) { 520 if (!live) { 521 if (kread(0, NULL, 0) == 0) 522 mbpr(kvmd, nl[N_MBSTAT].n_value); 523 } else 524 mbpr(NULL, 0); 525 exit(0); 526 } 527#if 0 528 /* 529 * Keep file descriptors open to avoid overhead 530 * of open/close on each call to get* routines. 531 */ 532 sethostent(1); 533 setnetent(1); 534#else 535 /* 536 * This does not make sense any more with DNS being default over 537 * the files. Doing a setXXXXent(1) causes a tcp connection to be 538 * used for the queries, which is slower. 539 */ 540#endif 541 kread(0, NULL, 0); 542 if (iflag && !sflag) { 543 intpr(interval, nl[N_IFNET].n_value, NULL); 544 exit(0); 545 } 546 if (rflag) { 547 if (sflag) 548 rt_stats(nl[N_RTSTAT].n_value, nl[N_RTTRASH].n_value); 549 else 550 routepr(nl[N_RTREE].n_value); 551 exit(0); 552 } 553 if (gflag) { 554 if (sflag) { 555 if (af == AF_INET || af == AF_UNSPEC) 556 mrt_stats(nl[N_MRTSTAT].n_value); 557#ifdef INET6 558 if (af == AF_INET6 || af == AF_UNSPEC) 559 mrt6_stats(nl[N_MRT6STAT].n_value); 560#endif 561 } else { 562 if (af == AF_INET || af == AF_UNSPEC) 563 mroutepr(nl[N_MFCHASHTBL].n_value, 564 nl[N_MFCTABLESIZE].n_value, 565 nl[N_VIFTABLE].n_value); 566#ifdef INET6 567 if (af == AF_INET6 || af == AF_UNSPEC) 568 mroute6pr(nl[N_MF6CTABLE].n_value, 569 nl[N_MIF6TABLE].n_value); 570#endif 571 } 572 exit(0); 573 } 574 575 if (tp) { 576 printproto(tp, tp->pr_name); 577 exit(0); 578 } 579 if (af == AF_INET || af == AF_UNSPEC) 580 for (tp = protox; tp->pr_name; tp++) 581 printproto(tp, tp->pr_name); 582#ifdef INET6 583 if (af == AF_INET6 || af == AF_UNSPEC) 584 for (tp = ip6protox; tp->pr_name; tp++) 585 printproto(tp, tp->pr_name); 586#endif /*INET6*/ 587#ifdef IPSEC 588 if (af == PF_KEY || af == AF_UNSPEC) 589 for (tp = pfkeyprotox; tp->pr_name; tp++) 590 printproto(tp, tp->pr_name); 591#endif /*IPSEC*/ 592#ifdef IPX 593 if (af == AF_IPX || af == AF_UNSPEC) { 594 for (tp = ipxprotox; tp->pr_name; tp++) 595 printproto(tp, tp->pr_name); 596 } 597#endif /* IPX */ 598 if (af == AF_APPLETALK || af == AF_UNSPEC) 599 for (tp = atalkprotox; tp->pr_name; tp++) 600 printproto(tp, tp->pr_name); 601#ifdef NETGRAPH 602 if (af == AF_NETGRAPH || af == AF_UNSPEC) 603 for (tp = netgraphprotox; tp->pr_name; tp++) 604 printproto(tp, tp->pr_name); 605#endif /* NETGRAPH */ 606 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 607 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, 608 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value, 609 nl[N_UNP_SPHEAD].n_value); 610 exit(0); 611} 612 613/* 614 * Print out protocol statistics or control blocks (per sflag). 615 * If the interface was not specifically requested, and the symbol 616 * is not in the namelist, ignore this one. 617 */ 618static void 619printproto(tp, name) 620 struct protox *tp; 621 const char *name; 622{ 623 void (*pr)(u_long, const char *, int, int); 624 u_long off; 625 626 if (sflag) { 627 if (iflag) { 628 if (tp->pr_istats) 629 intpr(interval, nl[N_IFNET].n_value, 630 tp->pr_istats); 631 else if (pflag) 632 printf("%s: no per-interface stats routine\n", 633 tp->pr_name); 634 return; 635 } else { 636 pr = tp->pr_stats; 637 if (!pr) { 638 if (pflag) 639 printf("%s: no stats routine\n", 640 tp->pr_name); 641 return; 642 } 643 if (tp->pr_usesysctl && live) 644 off = 0; 645 else if (tp->pr_sindex < 0) { 646 if (pflag) 647 printf( 648 "%s: stats routine doesn't work on cores\n", 649 tp->pr_name); 650 return; 651 } else 652 off = nl[tp->pr_sindex].n_value; 653 } 654 } else { 655 pr = tp->pr_cblocks; 656 if (!pr) { 657 if (pflag) 658 printf("%s: no PCB routine\n", tp->pr_name); 659 return; 660 } 661 if (tp->pr_usesysctl && live) 662 off = 0; 663 else if (tp->pr_index < 0) { 664 if (pflag) 665 printf( 666 "%s: PCB routine doesn't work on cores\n", 667 tp->pr_name); 668 return; 669 } else 670 off = nl[tp->pr_index].n_value; 671 } 672 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 673 af != AF_UNSPEC)) 674 (*pr)(off, name, af, tp->pr_protocol); 675} 676 677/* 678 * Read kernel memory, return 0 on success. 679 */ 680int 681kread(u_long addr, void *buf, size_t size) 682{ 683 char errbuf[_POSIX2_LINE_MAX]; 684 685 if (kvmd == NULL) { 686 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 687 setgid(getgid()); 688 if (kvmd != NULL) { 689 if (kvm_nlist(kvmd, nl) < 0) { 690 if (nlistf) 691 errx(1, "%s: kvm_nlist: %s", nlistf, 692 kvm_geterr(kvmd)); 693 else 694 errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 695 } 696 697 if (nl[0].n_type == 0) { 698 if (nlistf) 699 errx(1, "%s: no namelist", nlistf); 700 else 701 errx(1, "no namelist"); 702 } 703 } else { 704 warnx("kvm not available: %s", errbuf); 705 return(-1); 706 } 707 } 708 if (!buf) 709 return (0); 710 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 711 warnx("%s", kvm_geterr(kvmd)); 712 return (-1); 713 } 714 return (0); 715} 716 717const char * 718plural(uintmax_t n) 719{ 720 return (n != 1 ? "s" : ""); 721} 722 723const char * 724plurales(uintmax_t n) 725{ 726 return (n != 1 ? "es" : ""); 727} 728 729const char * 730pluralies(uintmax_t n) 731{ 732 return (n != 1 ? "ies" : "y"); 733} 734 735/* 736 * Find the protox for the given "well-known" name. 737 */ 738static struct protox * 739knownname(const char *name) 740{ 741 struct protox **tpp, *tp; 742 743 for (tpp = protoprotox; *tpp; tpp++) 744 for (tp = *tpp; tp->pr_name; tp++) 745 if (strcmp(tp->pr_name, name) == 0) 746 return (tp); 747 return (NULL); 748} 749 750/* 751 * Find the protox corresponding to name. 752 */ 753static struct protox * 754name2protox(const char *name) 755{ 756 struct protox *tp; 757 char **alias; /* alias from p->aliases */ 758 struct protoent *p; 759 760 /* 761 * Try to find the name in the list of "well-known" names. If that 762 * fails, check if name is an alias for an Internet protocol. 763 */ 764 if ((tp = knownname(name)) != NULL) 765 return (tp); 766 767 setprotoent(1); /* make protocol lookup cheaper */ 768 while ((p = getprotoent()) != NULL) { 769 /* assert: name not same as p->name */ 770 for (alias = p->p_aliases; *alias; alias++) 771 if (strcmp(name, *alias) == 0) { 772 endprotoent(); 773 return (knownname(p->p_name)); 774 } 775 } 776 endprotoent(); 777 return (NULL); 778} 779 780static void 781usage(void) 782{ 783 (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", 784"usage: netstat [-AaLnSWx] [-f protocol_family | -p protocol]\n" 785" [-M core] [-N system]", 786" netstat -i | -I interface [-abdhnW] [-f address_family]\n" 787" [-M core] [-N system]", 788" netstat -w wait [-I interface] [-d] [-M core] [-N system] [-q howmany]", 789" netstat -s [-s] [-z] [-f protocol_family | -p protocol]\n" 790" [-M core] [-N system]", 791" netstat -i | -I interface -s [-f protocol_family | -p protocol]\n" 792" [-M core] [-N system]", 793" netstat -m [-M core] [-N system]", 794" netstat -B [-I interface]", 795" netstat -r [-AanW] [-f address_family] [-M core] [-N system]", 796" netstat -rs [-s] [-M core] [-N system]", 797" netstat -g [-W] [-f address_family] [-M core] [-N system]", 798" netstat -gs [-s] [-f address_family] [-M core] [-N system]"); 799 exit(1); 800} 801