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 31 char 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 38 static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94"; 39 #endif /* not lint */ 40 #endif 41 42 #include <sys/cdefs.h> 43 __FBSDID("$FreeBSD$"); 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 72 static 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 }; 169 170 struct 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 { -1, N_PFSYNCSTAT, 1, NULL, 218 pfsync_stats, NULL, "pfsync", 1, 0 }, 219 { -1, N_ARPSTAT, 1, NULL, 220 arp_stats, NULL, "arp", 1, 0 }, 221 { -1, -1, 0, NULL, 222 NULL, NULL, NULL, 0, 0 } 223 }; 224 225 #ifdef INET6 226 struct protox ip6protox[] = { 227 { N_TCBINFO, N_TCPSTAT, 1, protopr, 228 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 229 { N_UDBINFO, N_UDPSTAT, 1, protopr, 230 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 231 { N_RIPCBINFO, N_IP6STAT, 1, protopr, 232 ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW }, 233 { N_RIPCBINFO, N_ICMP6STAT, 1, protopr, 234 icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 }, 235 #ifdef SDP 236 { -1, -1, 1, protopr, 237 NULL, NULL, "sdp", 1, IPPROTO_TCP }, 238 #endif 239 #ifdef IPSEC 240 { -1, N_IPSEC6STAT, 1, NULL, 241 ipsec_stats, NULL, "ipsec6", 0, 0 }, 242 #endif 243 #ifdef notyet 244 { -1, N_PIM6STAT, 1, NULL, 245 pim6_stats, NULL, "pim6", 1, 0 }, 246 #endif 247 { -1, N_RIP6STAT, 1, NULL, 248 rip6_stats, NULL, "rip6", 1, 0 }, 249 { -1, -1, 0, NULL, 250 NULL, NULL, NULL, 0, 0 } 251 }; 252 #endif /*INET6*/ 253 254 #ifdef IPSEC 255 struct protox pfkeyprotox[] = { 256 { -1, N_PFKEYSTAT, 1, NULL, 257 pfkey_stats, NULL, "pfkey", 0, 0 }, 258 { -1, -1, 0, NULL, 259 NULL, NULL, NULL, 0, 0 } 260 }; 261 #endif 262 263 struct protox atalkprotox[] = { 264 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, 265 ddp_stats, NULL, "ddp", 0, 0 }, 266 { -1, -1, 0, NULL, 267 NULL, NULL, NULL, 0, 0 } 268 }; 269 #ifdef NETGRAPH 270 struct protox netgraphprotox[] = { 271 { N_NGSOCKS, -1, 1, netgraphprotopr, 272 NULL, NULL, "ctrl", 0, 0 }, 273 { N_NGSOCKS, -1, 1, netgraphprotopr, 274 NULL, NULL, "data", 0, 0 }, 275 { -1, -1, 0, NULL, 276 NULL, NULL, NULL, 0, 0 } 277 }; 278 #endif 279 #ifdef IPX 280 struct protox ipxprotox[] = { 281 { N_IPX, N_IPXSTAT, 1, ipxprotopr, 282 ipx_stats, NULL, "ipx", 0, 0 }, 283 { N_IPX, N_SPXSTAT, 1, ipxprotopr, 284 spx_stats, NULL, "spx", 0, 0 }, 285 { -1, -1, 0, NULL, 286 NULL, NULL, 0, 0, 0 } 287 }; 288 #endif 289 290 struct protox *protoprotox[] = { 291 protox, 292 #ifdef INET6 293 ip6protox, 294 #endif 295 #ifdef IPSEC 296 pfkeyprotox, 297 #endif 298 #ifdef IPX 299 ipxprotox, 300 #endif 301 atalkprotox, NULL }; 302 303 static void printproto(struct protox *, const char *); 304 static void usage(void); 305 static struct protox *name2protox(const char *); 306 static struct protox *knownname(const char *); 307 308 static kvm_t *kvmd; 309 static char *nlistf = NULL, *memf = NULL; 310 311 int Aflag; /* show addresses of protocol control block */ 312 int aflag; /* show all sockets (including servers) */ 313 int Bflag; /* show information about bpf consumers */ 314 int bflag; /* show i/f total bytes in/out */ 315 int dflag; /* show i/f dropped packets */ 316 int gflag; /* show group (multicast) routing or stats */ 317 int hflag; /* show counters in human readable format */ 318 int iflag; /* show interfaces */ 319 int Lflag; /* show size of listen queues */ 320 int mflag; /* show memory stats */ 321 int noutputs = 0; /* how much outputs before we exit */ 322 int numeric_addr; /* show addresses numerically */ 323 int numeric_port; /* show ports numerically */ 324 static int pflag; /* show given protocol */ 325 int Qflag; /* show netisr information */ 326 int rflag; /* show routing tables (or routing stats) */ 327 int sflag; /* show protocol statistics */ 328 int Wflag; /* wide display */ 329 int Tflag; /* TCP Information */ 330 int xflag; /* extra information, includes all socket buffer info */ 331 int zflag; /* zero stats */ 332 333 int interval; /* repeat interval for i/f stats */ 334 335 char *interface; /* desired i/f for stats, or NULL for all i/fs */ 336 int unit; /* unit number for above */ 337 338 int af; /* address family */ 339 int live; /* true if we are examining a live system */ 340 341 int 342 main(int argc, char *argv[]) 343 { 344 struct protox *tp = NULL; /* for printing cblocks & stats */ 345 int ch; 346 int fib = -1; 347 char *endptr; 348 349 af = AF_UNSPEC; 350 351 while ((ch = getopt(argc, argv, "AaBbdF:f:ghI:iLlM:mN:np:Qq:rSTsuWw:xz")) 352 != -1) 353 switch(ch) { 354 case 'A': 355 Aflag = 1; 356 break; 357 case 'a': 358 aflag = 1; 359 break; 360 case 'B': 361 Bflag = 1; 362 break; 363 case 'b': 364 bflag = 1; 365 break; 366 case 'd': 367 dflag = 1; 368 break; 369 case 'F': 370 fib = strtol(optarg, &endptr, 0); 371 if (*endptr != '\0' || 372 (fib == 0 && (errno == EINVAL || errno == ERANGE))) 373 errx(1, "%s: invalid fib", optarg); 374 break; 375 case 'f': 376 if (strcmp(optarg, "ipx") == 0) 377 af = AF_IPX; 378 else if (strcmp(optarg, "inet") == 0) 379 af = AF_INET; 380 #ifdef INET6 381 else if (strcmp(optarg, "inet6") == 0) 382 af = AF_INET6; 383 #endif 384 #ifdef IPSEC 385 else if (strcmp(optarg, "pfkey") == 0) 386 af = PF_KEY; 387 #endif 388 else if (strcmp(optarg, "unix") == 0) 389 af = AF_UNIX; 390 else if (strcmp(optarg, "atalk") == 0) 391 af = AF_APPLETALK; 392 #ifdef NETGRAPH 393 else if (strcmp(optarg, "ng") == 0 394 || strcmp(optarg, "netgraph") == 0) 395 af = AF_NETGRAPH; 396 #endif 397 else if (strcmp(optarg, "link") == 0) 398 af = AF_LINK; 399 else { 400 errx(1, "%s: unknown address family", optarg); 401 } 402 break; 403 case 'g': 404 gflag = 1; 405 break; 406 case 'h': 407 hflag = 1; 408 break; 409 case 'I': { 410 char *cp; 411 412 iflag = 1; 413 for (cp = interface = optarg; isalpha(*cp); cp++) 414 continue; 415 unit = atoi(cp); 416 break; 417 } 418 case 'i': 419 iflag = 1; 420 break; 421 case 'L': 422 Lflag = 1; 423 break; 424 case 'M': 425 memf = optarg; 426 break; 427 case 'm': 428 mflag = 1; 429 break; 430 case 'N': 431 nlistf = optarg; 432 break; 433 case 'n': 434 numeric_addr = numeric_port = 1; 435 break; 436 case 'p': 437 if ((tp = name2protox(optarg)) == NULL) { 438 errx(1, 439 "%s: unknown or uninstrumented protocol", 440 optarg); 441 } 442 pflag = 1; 443 break; 444 case 'Q': 445 Qflag = 1; 446 break; 447 case 'q': 448 noutputs = atoi(optarg); 449 if (noutputs != 0) 450 noutputs++; 451 break; 452 case 'r': 453 rflag = 1; 454 break; 455 case 's': 456 ++sflag; 457 break; 458 case 'S': 459 numeric_addr = 1; 460 break; 461 case 'u': 462 af = AF_UNIX; 463 break; 464 case 'W': 465 case 'l': 466 Wflag = 1; 467 break; 468 case 'w': 469 interval = atoi(optarg); 470 iflag = 1; 471 break; 472 case 'T': 473 Tflag = 1; 474 break; 475 case 'x': 476 xflag = 1; 477 break; 478 case 'z': 479 zflag = 1; 480 break; 481 case '?': 482 default: 483 usage(); 484 } 485 argv += optind; 486 argc -= optind; 487 488 #define BACKWARD_COMPATIBILITY 489 #ifdef BACKWARD_COMPATIBILITY 490 if (*argv) { 491 if (isdigit(**argv)) { 492 interval = atoi(*argv); 493 if (interval <= 0) 494 usage(); 495 ++argv; 496 iflag = 1; 497 } 498 if (*argv) { 499 nlistf = *argv; 500 if (*++argv) 501 memf = *argv; 502 } 503 } 504 #endif 505 506 /* 507 * Discard setgid privileges if not the running kernel so that bad 508 * guys can't print interesting stuff from kernel memory. 509 */ 510 live = (nlistf == NULL && memf == NULL); 511 if (!live) 512 setgid(getgid()); 513 514 if (xflag && Tflag) 515 errx(1, "-x and -T are incompatible, pick one."); 516 517 if (Bflag) { 518 if (!live) 519 usage(); 520 bpf_stats(interface); 521 exit(0); 522 } 523 if (mflag) { 524 if (!live) { 525 if (kread(0, NULL, 0) == 0) 526 mbpr(kvmd, nl[N_SFSTAT].n_value); 527 } else 528 mbpr(NULL, 0); 529 exit(0); 530 } 531 if (Qflag) { 532 if (!live) { 533 if (kread(0, NULL, 0) == 0) 534 netisr_stats(kvmd); 535 } else 536 netisr_stats(NULL); 537 exit(0); 538 } 539 #if 0 540 /* 541 * Keep file descriptors open to avoid overhead 542 * of open/close on each call to get* routines. 543 */ 544 sethostent(1); 545 setnetent(1); 546 #else 547 /* 548 * This does not make sense any more with DNS being default over 549 * the files. Doing a setXXXXent(1) causes a tcp connection to be 550 * used for the queries, which is slower. 551 */ 552 #endif 553 kread(0, NULL, 0); 554 if (iflag && !sflag) { 555 intpr(interval, NULL); 556 exit(0); 557 } 558 if (rflag) { 559 if (sflag) 560 rt_stats(nl[N_RTSTAT].n_value, nl[N_RTTRASH].n_value); 561 else 562 routepr(nl[N_RTREE].n_value, fib); 563 exit(0); 564 } 565 if (gflag) { 566 if (sflag) { 567 if (af == AF_INET || af == AF_UNSPEC) 568 mrt_stats(nl[N_MRTSTAT].n_value); 569 #ifdef INET6 570 if (af == AF_INET6 || af == AF_UNSPEC) 571 mrt6_stats(nl[N_MRT6STAT].n_value); 572 #endif 573 } else { 574 if (af == AF_INET || af == AF_UNSPEC) 575 mroutepr(nl[N_MFCHASHTBL].n_value, 576 nl[N_MFCTABLESIZE].n_value, 577 nl[N_VIFTABLE].n_value); 578 #ifdef INET6 579 if (af == AF_INET6 || af == AF_UNSPEC) 580 mroute6pr(nl[N_MF6CTABLE].n_value, 581 nl[N_MIF6TABLE].n_value); 582 #endif 583 } 584 exit(0); 585 } 586 587 if (tp) { 588 printproto(tp, tp->pr_name); 589 exit(0); 590 } 591 if (af == AF_INET || af == AF_UNSPEC) 592 for (tp = protox; tp->pr_name; tp++) 593 printproto(tp, tp->pr_name); 594 #ifdef INET6 595 if (af == AF_INET6 || af == AF_UNSPEC) 596 for (tp = ip6protox; tp->pr_name; tp++) 597 printproto(tp, tp->pr_name); 598 #endif /*INET6*/ 599 #ifdef IPSEC 600 if (af == PF_KEY || af == AF_UNSPEC) 601 for (tp = pfkeyprotox; tp->pr_name; tp++) 602 printproto(tp, tp->pr_name); 603 #endif /*IPSEC*/ 604 #ifdef IPX 605 if (af == AF_IPX || af == AF_UNSPEC) { 606 for (tp = ipxprotox; tp->pr_name; tp++) 607 printproto(tp, tp->pr_name); 608 } 609 #endif /* IPX */ 610 if (af == AF_APPLETALK || af == AF_UNSPEC) 611 for (tp = atalkprotox; tp->pr_name; tp++) 612 printproto(tp, tp->pr_name); 613 #ifdef NETGRAPH 614 if (af == AF_NETGRAPH || af == AF_UNSPEC) 615 for (tp = netgraphprotox; tp->pr_name; tp++) 616 printproto(tp, tp->pr_name); 617 #endif /* NETGRAPH */ 618 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 619 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, 620 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value, 621 nl[N_UNP_SPHEAD].n_value); 622 exit(0); 623 } 624 625 /* 626 * Print out protocol statistics or control blocks (per sflag). 627 * If the interface was not specifically requested, and the symbol 628 * is not in the namelist, ignore this one. 629 */ 630 static void 631 printproto(struct protox *tp, const char *name) 632 { 633 void (*pr)(u_long, const char *, int, int); 634 u_long off; 635 636 if (sflag) { 637 if (iflag) { 638 if (tp->pr_istats) 639 intpr(interval, tp->pr_istats); 640 else if (pflag) 641 printf("%s: no per-interface stats routine\n", 642 tp->pr_name); 643 return; 644 } else { 645 pr = tp->pr_stats; 646 if (!pr) { 647 if (pflag) 648 printf("%s: no stats routine\n", 649 tp->pr_name); 650 return; 651 } 652 if (tp->pr_usesysctl && live) 653 off = 0; 654 else if (tp->pr_sindex < 0) { 655 if (pflag) 656 printf( 657 "%s: stats routine doesn't work on cores\n", 658 tp->pr_name); 659 return; 660 } else 661 off = nl[tp->pr_sindex].n_value; 662 } 663 } else { 664 pr = tp->pr_cblocks; 665 if (!pr) { 666 if (pflag) 667 printf("%s: no PCB routine\n", tp->pr_name); 668 return; 669 } 670 if (tp->pr_usesysctl && live) 671 off = 0; 672 else if (tp->pr_index < 0) { 673 if (pflag) 674 printf( 675 "%s: PCB routine doesn't work on cores\n", 676 tp->pr_name); 677 return; 678 } else 679 off = nl[tp->pr_index].n_value; 680 } 681 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 682 af != AF_UNSPEC)) 683 (*pr)(off, name, af, tp->pr_protocol); 684 } 685 686 static int 687 kvmd_init(void) 688 { 689 char errbuf[_POSIX2_LINE_MAX]; 690 691 if (kvmd != NULL) 692 return (0); 693 694 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 695 setgid(getgid()); 696 697 if (kvmd == NULL) { 698 warnx("kvm not available: %s", errbuf); 699 return (-1); 700 } 701 702 if (kvm_nlist(kvmd, nl) < 0) { 703 if (nlistf) 704 errx(1, "%s: kvm_nlist: %s", nlistf, 705 kvm_geterr(kvmd)); 706 else 707 errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 708 } 709 710 if (nl[0].n_type == 0) { 711 if (nlistf) 712 errx(1, "%s: no namelist", nlistf); 713 else 714 errx(1, "no namelist"); 715 } 716 717 return (0); 718 } 719 720 /* 721 * Read kernel memory, return 0 on success. 722 */ 723 int 724 kread(u_long addr, void *buf, size_t size) 725 { 726 727 if (kvmd_init() < 0) 728 return (-1); 729 730 if (!buf) 731 return (0); 732 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 733 warnx("%s", kvm_geterr(kvmd)); 734 return (-1); 735 } 736 return (0); 737 } 738 739 /* 740 * Read an array of N counters in kernel memory into array of N uint64_t's. 741 */ 742 int 743 kread_counters(u_long addr, void *buf, size_t size) 744 { 745 uint64_t *c = buf; 746 747 if (kvmd_init() < 0) 748 return (-1); 749 750 if (kread(addr, buf, size) < 0) 751 return (-1); 752 753 while (size != 0) { 754 *c = kvm_counter_u64_fetch(kvmd, *c); 755 size -= sizeof(*c); 756 c++; 757 } 758 return (0); 759 } 760 761 const char * 762 plural(uintmax_t n) 763 { 764 return (n != 1 ? "s" : ""); 765 } 766 767 const char * 768 plurales(uintmax_t n) 769 { 770 return (n != 1 ? "es" : ""); 771 } 772 773 const char * 774 pluralies(uintmax_t n) 775 { 776 return (n != 1 ? "ies" : "y"); 777 } 778 779 /* 780 * Find the protox for the given "well-known" name. 781 */ 782 static struct protox * 783 knownname(const char *name) 784 { 785 struct protox **tpp, *tp; 786 787 for (tpp = protoprotox; *tpp; tpp++) 788 for (tp = *tpp; tp->pr_name; tp++) 789 if (strcmp(tp->pr_name, name) == 0) 790 return (tp); 791 return (NULL); 792 } 793 794 /* 795 * Find the protox corresponding to name. 796 */ 797 static struct protox * 798 name2protox(const char *name) 799 { 800 struct protox *tp; 801 char **alias; /* alias from p->aliases */ 802 struct protoent *p; 803 804 /* 805 * Try to find the name in the list of "well-known" names. If that 806 * fails, check if name is an alias for an Internet protocol. 807 */ 808 if ((tp = knownname(name)) != NULL) 809 return (tp); 810 811 setprotoent(1); /* make protocol lookup cheaper */ 812 while ((p = getprotoent()) != NULL) { 813 /* assert: name not same as p->name */ 814 for (alias = p->p_aliases; *alias; alias++) 815 if (strcmp(name, *alias) == 0) { 816 endprotoent(); 817 return (knownname(p->p_name)); 818 } 819 } 820 endprotoent(); 821 return (NULL); 822 } 823 824 static void 825 usage(void) 826 { 827 (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", 828 "usage: netstat [-AaLnSTWx] [-f protocol_family | -p protocol]\n" 829 " [-M core] [-N system]", 830 " netstat -i | -I interface [-abdhnW] [-f address_family]\n" 831 " [-M core] [-N system]", 832 " netstat -w wait [-I interface] [-d] [-M core] [-N system] [-q howmany]", 833 " netstat -s [-s] [-z] [-f protocol_family | -p protocol]\n" 834 " [-M core] [-N system]", 835 " netstat -i | -I interface -s [-f protocol_family | -p protocol]\n" 836 " [-M core] [-N system]", 837 " netstat -m [-M core] [-N system]", 838 " netstat -B [-I interface]", 839 " netstat -r [-AanW] [-f address_family] [-M core] [-N system]", 840 " netstat -rs [-s] [-M core] [-N system]", 841 " netstat -g [-W] [-f address_family] [-M core] [-N system]", 842 " netstat -gs [-s] [-f address_family] [-M core] [-N system]", 843 " netstat -Q"); 844 exit(1); 845 } 846