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 <stdbool.h> 69 #include <string.h> 70 #include <unistd.h> 71 #include "netstat.h" 72 #include <libxo/xo.h> 73 74 static struct nlist nl[] = { 75 #define N_RTSTAT 0 76 { .n_name = "_rtstat" }, 77 #define N_RTREE 1 78 { .n_name = "_rt_tables"}, 79 #define N_MRTSTAT 2 80 { .n_name = "_mrtstat" }, 81 #define N_MFCHASHTBL 3 82 { .n_name = "_mfchashtbl" }, 83 #define N_VIFTABLE 4 84 { .n_name = "_viftable" }, 85 #define N_NGSOCKS 5 86 { .n_name = "_ngsocklist"}, 87 #define N_IP6STAT 6 88 { .n_name = "_ip6stat" }, 89 #define N_ICMP6STAT 7 90 { .n_name = "_icmp6stat" }, 91 #define N_IPSECSTAT 8 92 { .n_name = "_ipsec4stat" }, 93 #define N_IPSEC6STAT 9 94 { .n_name = "_ipsec6stat" }, 95 #define N_PIM6STAT 10 96 { .n_name = "_pim6stat" }, 97 #define N_MRT6STAT 11 98 { .n_name = "_mrt6stat" }, 99 #define N_MF6CTABLE 12 100 { .n_name = "_mf6ctable" }, 101 #define N_MIF6TABLE 13 102 { .n_name = "_mif6table" }, 103 #define N_PFKEYSTAT 14 104 { .n_name = "_pfkeystat" }, 105 #define N_RTTRASH 15 106 { .n_name = "_rttrash" }, 107 #define N_CARPSTAT 16 108 { .n_name = "_carpstats" }, 109 #define N_PFSYNCSTAT 17 110 { .n_name = "_pfsyncstats" }, 111 #define N_AHSTAT 18 112 { .n_name = "_ahstat" }, 113 #define N_ESPSTAT 19 114 { .n_name = "_espstat" }, 115 #define N_IPCOMPSTAT 20 116 { .n_name = "_ipcompstat" }, 117 #define N_TCPSTAT 21 118 { .n_name = "_tcpstat" }, 119 #define N_UDPSTAT 22 120 { .n_name = "_udpstat" }, 121 #define N_IPSTAT 23 122 { .n_name = "_ipstat" }, 123 #define N_ICMPSTAT 24 124 { .n_name = "_icmpstat" }, 125 #define N_IGMPSTAT 25 126 { .n_name = "_igmpstat" }, 127 #define N_PIMSTAT 26 128 { .n_name = "_pimstat" }, 129 #define N_TCBINFO 27 130 { .n_name = "_tcbinfo" }, 131 #define N_UDBINFO 28 132 { .n_name = "_udbinfo" }, 133 #define N_DIVCBINFO 29 134 { .n_name = "_divcbinfo" }, 135 #define N_RIPCBINFO 30 136 { .n_name = "_ripcbinfo" }, 137 #define N_UNP_COUNT 31 138 { .n_name = "_unp_count" }, 139 #define N_UNP_GENCNT 32 140 { .n_name = "_unp_gencnt" }, 141 #define N_UNP_DHEAD 33 142 { .n_name = "_unp_dhead" }, 143 #define N_UNP_SHEAD 34 144 { .n_name = "_unp_shead" }, 145 #define N_RIP6STAT 36 146 { .n_name = "_rip6stat" }, 147 #define N_SCTPSTAT 36 148 { .n_name = "_sctpstat" }, 149 #define N_MFCTABLESIZE 37 150 { .n_name = "_mfctablesize" }, 151 #define N_ARPSTAT 38 152 { .n_name = "_arpstat" }, 153 #define N_UNP_SPHEAD 39 154 { .n_name = "unp_sphead" }, 155 #define N_SFSTAT 40 156 { .n_name = "_sfstat"}, 157 { .n_name = NULL }, 158 }; 159 160 struct protox { 161 int pr_index; /* index into nlist of cb head */ 162 int pr_sindex; /* index into nlist of stat block */ 163 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 164 void (*pr_cblocks)(u_long, const char *, int, int); 165 /* control blocks printing routine */ 166 void (*pr_stats)(u_long, const char *, int, int); 167 /* statistics printing routine */ 168 void (*pr_istats)(char *); /* per/if statistics printing routine */ 169 const char *pr_name; /* well-known name */ 170 int pr_usesysctl; /* non-zero if we use sysctl, not kvm */ 171 int pr_protocol; 172 } protox[] = { 173 { N_TCBINFO, N_TCPSTAT, 1, protopr, 174 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 175 { N_UDBINFO, N_UDPSTAT, 1, protopr, 176 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 177 #ifdef SCTP 178 { -1, N_SCTPSTAT, 1, sctp_protopr, 179 sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP }, 180 #endif 181 #ifdef SDP 182 { -1, -1, 1, protopr, 183 NULL, NULL, "sdp", 1, IPPROTO_TCP }, 184 #endif 185 { N_DIVCBINFO, -1, 1, protopr, 186 NULL, NULL, "divert", 1, IPPROTO_DIVERT }, 187 { N_RIPCBINFO, N_IPSTAT, 1, protopr, 188 ip_stats, NULL, "ip", 1, IPPROTO_RAW }, 189 { N_RIPCBINFO, N_ICMPSTAT, 1, protopr, 190 icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP }, 191 { N_RIPCBINFO, N_IGMPSTAT, 1, protopr, 192 igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP }, 193 #ifdef IPSEC 194 { -1, N_IPSECSTAT, 1, NULL, /* keep as compat */ 195 ipsec_stats, NULL, "ipsec", 0, 0}, 196 { -1, N_AHSTAT, 1, NULL, 197 ah_stats, NULL, "ah", 0, 0}, 198 { -1, N_ESPSTAT, 1, NULL, 199 esp_stats, NULL, "esp", 0, 0}, 200 { -1, N_IPCOMPSTAT, 1, NULL, 201 ipcomp_stats, NULL, "ipcomp", 0, 0}, 202 #endif 203 { N_RIPCBINFO, N_PIMSTAT, 1, protopr, 204 pim_stats, NULL, "pim", 1, IPPROTO_PIM }, 205 { -1, N_CARPSTAT, 1, NULL, 206 carp_stats, NULL, "carp", 1, 0 }, 207 #ifdef PF 208 { -1, N_PFSYNCSTAT, 1, NULL, 209 pfsync_stats, NULL, "pfsync", 1, 0 }, 210 #endif 211 { -1, N_ARPSTAT, 1, NULL, 212 arp_stats, NULL, "arp", 1, 0 }, 213 { -1, -1, 0, NULL, 214 NULL, NULL, NULL, 0, 0 } 215 }; 216 217 #ifdef INET6 218 struct protox ip6protox[] = { 219 { N_TCBINFO, N_TCPSTAT, 1, protopr, 220 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 221 { N_UDBINFO, N_UDPSTAT, 1, protopr, 222 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 223 { N_RIPCBINFO, N_IP6STAT, 1, protopr, 224 ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW }, 225 { N_RIPCBINFO, N_ICMP6STAT, 1, protopr, 226 icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 }, 227 #ifdef SDP 228 { -1, -1, 1, protopr, 229 NULL, NULL, "sdp", 1, IPPROTO_TCP }, 230 #endif 231 #ifdef IPSEC 232 { -1, N_IPSEC6STAT, 1, NULL, 233 ipsec_stats, NULL, "ipsec6", 0, 0 }, 234 #endif 235 #ifdef notyet 236 { -1, N_PIM6STAT, 1, NULL, 237 pim6_stats, NULL, "pim6", 1, 0 }, 238 #endif 239 { -1, N_RIP6STAT, 1, NULL, 240 rip6_stats, NULL, "rip6", 1, 0 }, 241 { -1, -1, 0, NULL, 242 NULL, NULL, NULL, 0, 0 } 243 }; 244 #endif /*INET6*/ 245 246 #ifdef IPSEC 247 struct protox pfkeyprotox[] = { 248 { -1, N_PFKEYSTAT, 1, NULL, 249 pfkey_stats, NULL, "pfkey", 0, 0 }, 250 { -1, -1, 0, NULL, 251 NULL, NULL, NULL, 0, 0 } 252 }; 253 #endif 254 255 #ifdef NETGRAPH 256 struct protox netgraphprotox[] = { 257 { N_NGSOCKS, -1, 1, netgraphprotopr, 258 NULL, NULL, "ctrl", 0, 0 }, 259 { N_NGSOCKS, -1, 1, netgraphprotopr, 260 NULL, NULL, "data", 0, 0 }, 261 { -1, -1, 0, NULL, 262 NULL, NULL, NULL, 0, 0 } 263 }; 264 #endif 265 266 struct protox *protoprotox[] = { 267 protox, 268 #ifdef INET6 269 ip6protox, 270 #endif 271 #ifdef IPSEC 272 pfkeyprotox, 273 #endif 274 NULL }; 275 276 static void printproto(struct protox *, const char *, bool *); 277 static void usage(void); 278 static struct protox *name2protox(const char *); 279 static struct protox *knownname(const char *); 280 281 static kvm_t *kvmd; 282 static char *nlistf = NULL, *memf = NULL; 283 284 int Aflag; /* show addresses of protocol control block */ 285 int aflag; /* show all sockets (including servers) */ 286 int Bflag; /* show information about bpf consumers */ 287 int bflag; /* show i/f total bytes in/out */ 288 int dflag; /* show i/f dropped packets */ 289 int gflag; /* show group (multicast) routing or stats */ 290 int hflag; /* show counters in human readable format */ 291 int iflag; /* show interfaces */ 292 int Lflag; /* show size of listen queues */ 293 int mflag; /* show memory stats */ 294 int noutputs = 0; /* how much outputs before we exit */ 295 int numeric_addr; /* show addresses numerically */ 296 int numeric_port; /* show ports numerically */ 297 static int pflag; /* show given protocol */ 298 int Qflag; /* show netisr information */ 299 int rflag; /* show routing tables (or routing stats) */ 300 int Rflag; /* show flow / RSS statistics */ 301 int sflag; /* show protocol statistics */ 302 int Wflag; /* wide display */ 303 int Tflag; /* TCP Information */ 304 int xflag; /* extra information, includes all socket buffer info */ 305 int zflag; /* zero stats */ 306 307 int interval; /* repeat interval for i/f stats */ 308 309 char *interface; /* desired i/f for stats, or NULL for all i/fs */ 310 int unit; /* unit number for above */ 311 312 int af; /* address family */ 313 int live; /* true if we are examining a live system */ 314 315 int 316 main(int argc, char *argv[]) 317 { 318 struct protox *tp = NULL; /* for printing cblocks & stats */ 319 int ch; 320 int fib = -1; 321 char *endptr; 322 bool first = true; 323 324 af = AF_UNSPEC; 325 326 argc = xo_parse_args(argc, argv); 327 328 while ((ch = getopt(argc, argv, "46AaBbdF:f:ghI:iLlM:mN:np:Qq:RrSTsuWw:xz")) 329 != -1) 330 switch(ch) { 331 case '4': 332 #ifdef INET 333 af = AF_INET; 334 #else 335 errx(1, "IPv4 support is not compiled in"); 336 #endif 337 break; 338 case '6': 339 #ifdef INET6 340 af = AF_INET6; 341 #else 342 errx(1, "IPv6 support is not compiled in"); 343 #endif 344 break; 345 case 'A': 346 Aflag = 1; 347 break; 348 case 'a': 349 aflag = 1; 350 break; 351 case 'B': 352 Bflag = 1; 353 break; 354 case 'b': 355 bflag = 1; 356 break; 357 case 'd': 358 dflag = 1; 359 break; 360 case 'F': 361 fib = strtol(optarg, &endptr, 0); 362 if (*endptr != '\0' || 363 (fib == 0 && (errno == EINVAL || errno == ERANGE))) 364 xo_errx(1, "%s: invalid fib", optarg); 365 break; 366 case 'f': 367 if (strcmp(optarg, "inet") == 0) 368 af = AF_INET; 369 #ifdef INET6 370 else if (strcmp(optarg, "inet6") == 0) 371 af = AF_INET6; 372 #endif 373 #ifdef IPSEC 374 else if (strcmp(optarg, "pfkey") == 0) 375 af = PF_KEY; 376 #endif 377 else if (strcmp(optarg, "unix") == 0) 378 af = AF_UNIX; 379 #ifdef NETGRAPH 380 else if (strcmp(optarg, "ng") == 0 381 || strcmp(optarg, "netgraph") == 0) 382 af = AF_NETGRAPH; 383 #endif 384 else if (strcmp(optarg, "link") == 0) 385 af = AF_LINK; 386 else { 387 xo_errx(1, "%s: unknown address family", 388 optarg); 389 } 390 break; 391 case 'g': 392 gflag = 1; 393 break; 394 case 'h': 395 hflag = 1; 396 break; 397 case 'I': { 398 char *cp; 399 400 iflag = 1; 401 for (cp = interface = optarg; isalpha(*cp); cp++) 402 continue; 403 unit = atoi(cp); 404 break; 405 } 406 case 'i': 407 iflag = 1; 408 break; 409 case 'L': 410 Lflag = 1; 411 break; 412 case 'M': 413 memf = optarg; 414 break; 415 case 'm': 416 mflag = 1; 417 break; 418 case 'N': 419 nlistf = optarg; 420 break; 421 case 'n': 422 numeric_addr = numeric_port = 1; 423 break; 424 case 'p': 425 if ((tp = name2protox(optarg)) == NULL) { 426 xo_errx(1, "%s: unknown or uninstrumented " 427 "protocol", optarg); 428 } 429 pflag = 1; 430 break; 431 case 'Q': 432 Qflag = 1; 433 break; 434 case 'q': 435 noutputs = atoi(optarg); 436 if (noutputs != 0) 437 noutputs++; 438 break; 439 case 'r': 440 rflag = 1; 441 break; 442 case 'R': 443 Rflag = 1; 444 break; 445 case 's': 446 ++sflag; 447 break; 448 case 'S': 449 numeric_addr = 1; 450 break; 451 case 'u': 452 af = AF_UNIX; 453 break; 454 case 'W': 455 case 'l': 456 Wflag = 1; 457 break; 458 case 'w': 459 interval = atoi(optarg); 460 iflag = 1; 461 break; 462 case 'T': 463 Tflag = 1; 464 break; 465 case 'x': 466 xflag = 1; 467 break; 468 case 'z': 469 zflag = 1; 470 break; 471 case '?': 472 default: 473 usage(); 474 } 475 argv += optind; 476 argc -= optind; 477 478 #define BACKWARD_COMPATIBILITY 479 #ifdef BACKWARD_COMPATIBILITY 480 if (*argv) { 481 if (isdigit(**argv)) { 482 interval = atoi(*argv); 483 if (interval <= 0) 484 usage(); 485 ++argv; 486 iflag = 1; 487 } 488 if (*argv) { 489 nlistf = *argv; 490 if (*++argv) 491 memf = *argv; 492 } 493 } 494 #endif 495 496 /* 497 * Discard setgid privileges if not the running kernel so that bad 498 * guys can't print interesting stuff from kernel memory. 499 */ 500 live = (nlistf == NULL && memf == NULL); 501 if (!live) 502 setgid(getgid()); 503 504 if (xflag && Tflag) 505 xo_errx(1, "-x and -T are incompatible, pick one."); 506 507 if (Bflag) { 508 if (!live) 509 usage(); 510 bpf_stats(interface); 511 xo_finish(); 512 exit(0); 513 } 514 if (mflag) { 515 if (!live) { 516 if (kread(0, NULL, 0) == 0) 517 mbpr(kvmd, nl[N_SFSTAT].n_value); 518 } else 519 mbpr(NULL, 0); 520 xo_finish(); 521 exit(0); 522 } 523 if (Qflag) { 524 if (!live) { 525 if (kread(0, NULL, 0) == 0) 526 netisr_stats(kvmd); 527 } else 528 netisr_stats(NULL); 529 xo_finish(); 530 exit(0); 531 } 532 #if 0 533 /* 534 * Keep file descriptors open to avoid overhead 535 * of open/close on each call to get* routines. 536 */ 537 sethostent(1); 538 setnetent(1); 539 #else 540 /* 541 * This does not make sense any more with DNS being default over 542 * the files. Doing a setXXXXent(1) causes a tcp connection to be 543 * used for the queries, which is slower. 544 */ 545 #endif 546 if (iflag && !sflag) { 547 xo_open_container("statistics"); 548 intpr(interval, NULL, af); 549 xo_close_container("statistics"); 550 xo_finish(); 551 exit(0); 552 } 553 if (rflag) { 554 xo_open_container("statistics"); 555 if (sflag) { 556 rt_stats(); 557 flowtable_stats(); 558 } else 559 routepr(fib, af); 560 xo_close_container("statistics"); 561 xo_finish(); 562 exit(0); 563 } 564 565 if (gflag) { 566 xo_open_container("statistics"); 567 if (sflag) { 568 if (af == AF_INET || af == AF_UNSPEC) 569 mrt_stats(); 570 #ifdef INET6 571 if (af == AF_INET6 || af == AF_UNSPEC) 572 mrt6_stats(); 573 #endif 574 } else { 575 if (af == AF_INET || af == AF_UNSPEC) 576 mroutepr(); 577 #ifdef INET6 578 if (af == AF_INET6 || af == AF_UNSPEC) 579 mroute6pr(); 580 #endif 581 } 582 xo_close_container("statistics"); 583 xo_finish(); 584 exit(0); 585 } 586 587 /* Load all necessary kvm symbols */ 588 kresolve_list(nl); 589 590 if (tp) { 591 xo_open_container("statistics"); 592 printproto(tp, tp->pr_name, &first); 593 if (!first) 594 xo_close_list("socket"); 595 xo_close_container("statistics"); 596 xo_finish(); 597 exit(0); 598 } 599 600 xo_open_container("statistics"); 601 if (af == AF_INET || af == AF_UNSPEC) 602 for (tp = protox; tp->pr_name; tp++) 603 printproto(tp, tp->pr_name, &first); 604 #ifdef INET6 605 if (af == AF_INET6 || af == AF_UNSPEC) 606 for (tp = ip6protox; tp->pr_name; tp++) 607 printproto(tp, tp->pr_name, &first); 608 #endif /*INET6*/ 609 #ifdef IPSEC 610 if (af == PF_KEY || af == AF_UNSPEC) 611 for (tp = pfkeyprotox; tp->pr_name; tp++) 612 printproto(tp, tp->pr_name, &first); 613 #endif /*IPSEC*/ 614 #ifdef NETGRAPH 615 if (af == AF_NETGRAPH || af == AF_UNSPEC) 616 for (tp = netgraphprotox; tp->pr_name; tp++) 617 printproto(tp, tp->pr_name, &first); 618 #endif /* NETGRAPH */ 619 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 620 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, 621 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value, 622 nl[N_UNP_SPHEAD].n_value, &first); 623 624 if (!first) 625 xo_close_list("socket"); 626 xo_close_container("statistics"); 627 xo_finish(); 628 exit(0); 629 } 630 631 /* 632 * Print out protocol statistics or control blocks (per sflag). 633 * If the interface was not specifically requested, and the symbol 634 * is not in the namelist, ignore this one. 635 */ 636 static void 637 printproto(struct protox *tp, const char *name, bool *first) 638 { 639 void (*pr)(u_long, const char *, int, int); 640 u_long off; 641 bool doingdblocks = false; 642 643 if (sflag) { 644 if (iflag) { 645 if (tp->pr_istats) 646 intpr(interval, tp->pr_istats, af); 647 else if (pflag) 648 xo_message("%s: no per-interface stats routine", 649 tp->pr_name); 650 return; 651 } else { 652 pr = tp->pr_stats; 653 if (!pr) { 654 if (pflag) 655 xo_message("%s: no stats routine", 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 xo_message("%s: stats routine doesn't " 664 "work on cores", tp->pr_name); 665 return; 666 } else 667 off = nl[tp->pr_sindex].n_value; 668 } 669 } else { 670 doingdblocks = true; 671 pr = tp->pr_cblocks; 672 if (!pr) { 673 if (pflag) 674 xo_message("%s: no PCB routine", 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 xo_message("%s: PCB routine doesn't work on " 682 "cores", tp->pr_name); 683 return; 684 } else 685 off = nl[tp->pr_index].n_value; 686 } 687 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 688 af != AF_UNSPEC)) { 689 if (doingdblocks && *first) { 690 xo_open_list("socket"); 691 *first = false; 692 } 693 694 (*pr)(off, name, af, tp->pr_protocol); 695 } 696 } 697 698 static int 699 kvmd_init(void) 700 { 701 char errbuf[_POSIX2_LINE_MAX]; 702 703 if (kvmd != NULL) 704 return (0); 705 706 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 707 setgid(getgid()); 708 709 if (kvmd == NULL) { 710 xo_warnx("kvm not available: %s", errbuf); 711 return (-1); 712 } 713 714 return (0); 715 } 716 717 /* 718 * Resolve symbol list, return 0 on success. 719 */ 720 int 721 kresolve_list(struct nlist *_nl) 722 { 723 724 if ((kvmd == NULL) && (kvmd_init() != 0)) 725 return (-1); 726 727 if (_nl[0].n_type != 0) 728 return (0); 729 730 if (kvm_nlist(kvmd, _nl) < 0) { 731 if (nlistf) 732 xo_errx(1, "%s: kvm_nlist: %s", nlistf, 733 kvm_geterr(kvmd)); 734 else 735 xo_errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 736 } 737 738 return (0); 739 } 740 741 /* 742 * Read kernel memory, return 0 on success. 743 */ 744 int 745 kread(u_long addr, void *buf, size_t size) 746 { 747 748 if (kvmd_init() < 0) 749 return (-1); 750 751 if (!buf) 752 return (0); 753 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 754 xo_warnx("%s", kvm_geterr(kvmd)); 755 return (-1); 756 } 757 return (0); 758 } 759 760 /* 761 * Read single counter(9). 762 */ 763 uint64_t 764 kread_counter(u_long addr) 765 { 766 767 if (kvmd_init() < 0) 768 return (-1); 769 770 return (kvm_counter_u64_fetch(kvmd, addr)); 771 } 772 773 /* 774 * Read an array of N counters in kernel memory into array of N uint64_t's. 775 */ 776 int 777 kread_counters(u_long addr, void *buf, size_t size) 778 { 779 uint64_t *c = buf; 780 781 if (kvmd_init() < 0) 782 return (-1); 783 784 if (kread(addr, buf, size) < 0) 785 return (-1); 786 787 while (size != 0) { 788 *c = kvm_counter_u64_fetch(kvmd, *c); 789 size -= sizeof(*c); 790 c++; 791 } 792 return (0); 793 } 794 795 const char * 796 plural(uintmax_t n) 797 { 798 return (n != 1 ? "s" : ""); 799 } 800 801 const char * 802 plurales(uintmax_t n) 803 { 804 return (n != 1 ? "es" : ""); 805 } 806 807 const char * 808 pluralies(uintmax_t n) 809 { 810 return (n != 1 ? "ies" : "y"); 811 } 812 813 /* 814 * Find the protox for the given "well-known" name. 815 */ 816 static struct protox * 817 knownname(const char *name) 818 { 819 struct protox **tpp, *tp; 820 821 for (tpp = protoprotox; *tpp; tpp++) 822 for (tp = *tpp; tp->pr_name; tp++) 823 if (strcmp(tp->pr_name, name) == 0) 824 return (tp); 825 return (NULL); 826 } 827 828 /* 829 * Find the protox corresponding to name. 830 */ 831 static struct protox * 832 name2protox(const char *name) 833 { 834 struct protox *tp; 835 char **alias; /* alias from p->aliases */ 836 struct protoent *p; 837 838 /* 839 * Try to find the name in the list of "well-known" names. If that 840 * fails, check if name is an alias for an Internet protocol. 841 */ 842 if ((tp = knownname(name)) != NULL) 843 return (tp); 844 845 setprotoent(1); /* make protocol lookup cheaper */ 846 while ((p = getprotoent()) != NULL) { 847 /* assert: name not same as p->name */ 848 for (alias = p->p_aliases; *alias; alias++) 849 if (strcmp(name, *alias) == 0) { 850 endprotoent(); 851 return (knownname(p->p_name)); 852 } 853 } 854 endprotoent(); 855 return (NULL); 856 } 857 858 static void 859 usage(void) 860 { 861 (void)xo_error("%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n", 862 "usage: netstat [-46AaLnRSTWx] [-f protocol_family | -p protocol]\n" 863 " [-M core] [-N system]", 864 " netstat -i | -I interface [-46abdhnW] [-f address_family]\n" 865 " [-M core] [-N system]", 866 " netstat -w wait [-I interface] [-46d] [-M core] [-N system]\n" 867 " [-q howmany]", 868 " netstat -s [-46sz] [-f protocol_family | -p protocol]\n" 869 " [-M core] [-N system]", 870 " netstat -i | -I interface -s [-46s]\n" 871 " [-f protocol_family | -p protocol] [-M core] [-N system]", 872 " netstat -m [-M core] [-N system]", 873 " netstat -B [-z] [-I interface]", 874 " netstat -r [-46AnW] [-F fibnum] [-f address_family]\n" 875 " [-M core] [-N system]", 876 " netstat -rs [-s] [-M core] [-N system]", 877 " netstat -g [-46W] [-f address_family] [-M core] [-N system]", 878 " netstat -gs [-46s] [-f address_family] [-M core] [-N system]", 879 " netstat -Q"); 880 xo_finish(); 881 exit(1); 882 } 883