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 strcmp(optarg, "local") == 0) 379 af = AF_UNIX; 380 #ifdef NETGRAPH 381 else if (strcmp(optarg, "ng") == 0 382 || strcmp(optarg, "netgraph") == 0) 383 af = AF_NETGRAPH; 384 #endif 385 else if (strcmp(optarg, "link") == 0) 386 af = AF_LINK; 387 else { 388 xo_errx(1, "%s: unknown address family", 389 optarg); 390 } 391 break; 392 case 'g': 393 gflag = 1; 394 break; 395 case 'h': 396 hflag = 1; 397 break; 398 case 'I': { 399 char *cp; 400 401 iflag = 1; 402 for (cp = interface = optarg; isalpha(*cp); cp++) 403 continue; 404 unit = atoi(cp); 405 break; 406 } 407 case 'i': 408 iflag = 1; 409 break; 410 case 'L': 411 Lflag = 1; 412 break; 413 case 'M': 414 memf = optarg; 415 break; 416 case 'm': 417 mflag = 1; 418 break; 419 case 'N': 420 nlistf = optarg; 421 break; 422 case 'n': 423 numeric_addr = numeric_port = 1; 424 break; 425 case 'p': 426 if ((tp = name2protox(optarg)) == NULL) { 427 xo_errx(1, "%s: unknown or uninstrumented " 428 "protocol", optarg); 429 } 430 pflag = 1; 431 break; 432 case 'Q': 433 Qflag = 1; 434 break; 435 case 'q': 436 noutputs = atoi(optarg); 437 if (noutputs != 0) 438 noutputs++; 439 break; 440 case 'r': 441 rflag = 1; 442 break; 443 case 'R': 444 Rflag = 1; 445 break; 446 case 's': 447 ++sflag; 448 break; 449 case 'S': 450 numeric_addr = 1; 451 break; 452 case 'u': 453 af = AF_UNIX; 454 break; 455 case 'W': 456 case 'l': 457 Wflag = 1; 458 break; 459 case 'w': 460 interval = atoi(optarg); 461 iflag = 1; 462 break; 463 case 'T': 464 Tflag = 1; 465 break; 466 case 'x': 467 xflag = 1; 468 break; 469 case 'z': 470 zflag = 1; 471 break; 472 case '?': 473 default: 474 usage(); 475 } 476 argv += optind; 477 argc -= optind; 478 479 #define BACKWARD_COMPATIBILITY 480 #ifdef BACKWARD_COMPATIBILITY 481 if (*argv) { 482 if (isdigit(**argv)) { 483 interval = atoi(*argv); 484 if (interval <= 0) 485 usage(); 486 ++argv; 487 iflag = 1; 488 } 489 if (*argv) { 490 nlistf = *argv; 491 if (*++argv) 492 memf = *argv; 493 } 494 } 495 #endif 496 497 /* 498 * Discard setgid privileges if not the running kernel so that bad 499 * guys can't print interesting stuff from kernel memory. 500 */ 501 live = (nlistf == NULL && memf == NULL); 502 if (!live) { 503 if (setgid(getgid()) != 0) 504 xo_err(-1, "setgid"); 505 } 506 507 if (xflag && Tflag) 508 xo_errx(1, "-x and -T are incompatible, pick one."); 509 510 if (Bflag) { 511 if (!live) 512 usage(); 513 bpf_stats(interface); 514 xo_finish(); 515 exit(0); 516 } 517 if (mflag) { 518 if (!live) { 519 if (kread(0, NULL, 0) == 0) 520 mbpr(kvmd, nl[N_SFSTAT].n_value); 521 } else 522 mbpr(NULL, 0); 523 xo_finish(); 524 exit(0); 525 } 526 if (Qflag) { 527 if (!live) { 528 if (kread(0, NULL, 0) == 0) 529 netisr_stats(kvmd); 530 } else 531 netisr_stats(NULL); 532 xo_finish(); 533 exit(0); 534 } 535 #if 0 536 /* 537 * Keep file descriptors open to avoid overhead 538 * of open/close on each call to get* routines. 539 */ 540 sethostent(1); 541 setnetent(1); 542 #else 543 /* 544 * This does not make sense any more with DNS being default over 545 * the files. Doing a setXXXXent(1) causes a tcp connection to be 546 * used for the queries, which is slower. 547 */ 548 #endif 549 if (iflag && !sflag) { 550 xo_open_container("statistics"); 551 intpr(NULL, af); 552 xo_close_container("statistics"); 553 xo_finish(); 554 exit(0); 555 } 556 if (rflag) { 557 xo_open_container("statistics"); 558 if (sflag) { 559 rt_stats(); 560 flowtable_stats(); 561 } else 562 routepr(fib, af); 563 xo_close_container("statistics"); 564 xo_finish(); 565 exit(0); 566 } 567 568 if (gflag) { 569 xo_open_container("statistics"); 570 if (sflag) { 571 if (af == AF_INET || af == AF_UNSPEC) 572 mrt_stats(); 573 #ifdef INET6 574 if (af == AF_INET6 || af == AF_UNSPEC) 575 mrt6_stats(); 576 #endif 577 } else { 578 if (af == AF_INET || af == AF_UNSPEC) 579 mroutepr(); 580 #ifdef INET6 581 if (af == AF_INET6 || af == AF_UNSPEC) 582 mroute6pr(); 583 #endif 584 } 585 xo_close_container("statistics"); 586 xo_finish(); 587 exit(0); 588 } 589 590 /* Load all necessary kvm symbols */ 591 kresolve_list(nl); 592 593 if (tp) { 594 xo_open_container("statistics"); 595 printproto(tp, tp->pr_name, &first); 596 if (!first) 597 xo_close_list("socket"); 598 xo_close_container("statistics"); 599 xo_finish(); 600 exit(0); 601 } 602 603 xo_open_container("statistics"); 604 if (af == AF_INET || af == AF_UNSPEC) 605 for (tp = protox; tp->pr_name; tp++) 606 printproto(tp, tp->pr_name, &first); 607 #ifdef INET6 608 if (af == AF_INET6 || af == AF_UNSPEC) 609 for (tp = ip6protox; tp->pr_name; tp++) 610 printproto(tp, tp->pr_name, &first); 611 #endif /*INET6*/ 612 #ifdef IPSEC 613 if (af == PF_KEY || af == AF_UNSPEC) 614 for (tp = pfkeyprotox; tp->pr_name; tp++) 615 printproto(tp, tp->pr_name, &first); 616 #endif /*IPSEC*/ 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, &first); 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, &first); 626 627 if (!first) 628 xo_close_list("socket"); 629 xo_close_container("statistics"); 630 xo_finish(); 631 exit(0); 632 } 633 634 /* 635 * Print out protocol statistics or control blocks (per sflag). 636 * If the interface was not specifically requested, and the symbol 637 * is not in the namelist, ignore this one. 638 */ 639 static void 640 printproto(struct protox *tp, const char *name, bool *first) 641 { 642 void (*pr)(u_long, const char *, int, int); 643 u_long off; 644 bool doingdblocks = false; 645 646 if (sflag) { 647 if (iflag) { 648 if (tp->pr_istats) 649 intpr(tp->pr_istats, af); 650 else if (pflag) 651 xo_message("%s: no per-interface stats routine", 652 tp->pr_name); 653 return; 654 } else { 655 pr = tp->pr_stats; 656 if (!pr) { 657 if (pflag) 658 xo_message("%s: no stats routine", 659 tp->pr_name); 660 return; 661 } 662 if (tp->pr_usesysctl && live) 663 off = 0; 664 else if (tp->pr_sindex < 0) { 665 if (pflag) 666 xo_message("%s: stats routine doesn't " 667 "work on cores", tp->pr_name); 668 return; 669 } else 670 off = nl[tp->pr_sindex].n_value; 671 } 672 } else { 673 doingdblocks = true; 674 pr = tp->pr_cblocks; 675 if (!pr) { 676 if (pflag) 677 xo_message("%s: no PCB routine", tp->pr_name); 678 return; 679 } 680 if (tp->pr_usesysctl && live) 681 off = 0; 682 else if (tp->pr_index < 0) { 683 if (pflag) 684 xo_message("%s: PCB routine doesn't work on " 685 "cores", tp->pr_name); 686 return; 687 } else 688 off = nl[tp->pr_index].n_value; 689 } 690 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 691 af != AF_UNSPEC)) { 692 if (doingdblocks && *first) { 693 xo_open_list("socket"); 694 *first = false; 695 } 696 697 (*pr)(off, name, af, tp->pr_protocol); 698 } 699 } 700 701 static int 702 kvmd_init(void) 703 { 704 char errbuf[_POSIX2_LINE_MAX]; 705 706 if (kvmd != NULL) 707 return (0); 708 709 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 710 if (setgid(getgid()) != 0) 711 xo_err(-1, "setgid"); 712 713 if (kvmd == NULL) { 714 xo_warnx("kvm not available: %s", errbuf); 715 return (-1); 716 } 717 718 return (0); 719 } 720 721 /* 722 * Resolve symbol list, return 0 on success. 723 */ 724 int 725 kresolve_list(struct nlist *_nl) 726 { 727 728 if ((kvmd == NULL) && (kvmd_init() != 0)) 729 return (-1); 730 731 if (_nl[0].n_type != 0) 732 return (0); 733 734 if (kvm_nlist(kvmd, _nl) < 0) { 735 if (nlistf) 736 xo_errx(1, "%s: kvm_nlist: %s", nlistf, 737 kvm_geterr(kvmd)); 738 else 739 xo_errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 740 } 741 742 return (0); 743 } 744 745 /* 746 * Read kernel memory, return 0 on success. 747 */ 748 int 749 kread(u_long addr, void *buf, size_t size) 750 { 751 752 if (kvmd_init() < 0) 753 return (-1); 754 755 if (!buf) 756 return (0); 757 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 758 xo_warnx("%s", kvm_geterr(kvmd)); 759 return (-1); 760 } 761 return (0); 762 } 763 764 /* 765 * Read single counter(9). 766 */ 767 uint64_t 768 kread_counter(u_long addr) 769 { 770 771 if (kvmd_init() < 0) 772 return (-1); 773 774 return (kvm_counter_u64_fetch(kvmd, addr)); 775 } 776 777 /* 778 * Read an array of N counters in kernel memory into array of N uint64_t's. 779 */ 780 int 781 kread_counters(u_long addr, void *buf, size_t size) 782 { 783 uint64_t *c; 784 u_long *counters; 785 size_t i, n; 786 787 if (kvmd_init() < 0) 788 return (-1); 789 790 if (size % sizeof(uint64_t) != 0) { 791 xo_warnx("kread_counters: invalid counter set size"); 792 return (-1); 793 } 794 795 n = size / sizeof(uint64_t); 796 if ((counters = malloc(n * sizeof(u_long))) == NULL) 797 xo_err(-1, "malloc"); 798 if (kread(addr, counters, n * sizeof(u_long)) < 0) { 799 free(counters); 800 return (-1); 801 } 802 803 c = buf; 804 for (i = 0; i < n; i++) 805 c[i] = kvm_counter_u64_fetch(kvmd, counters[i]); 806 807 free(counters); 808 return (0); 809 } 810 811 const char * 812 plural(uintmax_t n) 813 { 814 return (n != 1 ? "s" : ""); 815 } 816 817 const char * 818 plurales(uintmax_t n) 819 { 820 return (n != 1 ? "es" : ""); 821 } 822 823 const char * 824 pluralies(uintmax_t n) 825 { 826 return (n != 1 ? "ies" : "y"); 827 } 828 829 /* 830 * Find the protox for the given "well-known" name. 831 */ 832 static struct protox * 833 knownname(const char *name) 834 { 835 struct protox **tpp, *tp; 836 837 for (tpp = protoprotox; *tpp; tpp++) 838 for (tp = *tpp; tp->pr_name; tp++) 839 if (strcmp(tp->pr_name, name) == 0) 840 return (tp); 841 return (NULL); 842 } 843 844 /* 845 * Find the protox corresponding to name. 846 */ 847 static struct protox * 848 name2protox(const char *name) 849 { 850 struct protox *tp; 851 char **alias; /* alias from p->aliases */ 852 struct protoent *p; 853 854 /* 855 * Try to find the name in the list of "well-known" names. If that 856 * fails, check if name is an alias for an Internet protocol. 857 */ 858 if ((tp = knownname(name)) != NULL) 859 return (tp); 860 861 setprotoent(1); /* make protocol lookup cheaper */ 862 while ((p = getprotoent()) != NULL) { 863 /* assert: name not same as p->name */ 864 for (alias = p->p_aliases; *alias; alias++) 865 if (strcmp(name, *alias) == 0) { 866 endprotoent(); 867 return (knownname(p->p_name)); 868 } 869 } 870 endprotoent(); 871 return (NULL); 872 } 873 874 static void 875 usage(void) 876 { 877 (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", 878 "usage: netstat [-46AaLnRSTWx] [-f protocol_family | -p protocol]\n" 879 " [-M core] [-N system]", 880 " netstat -i | -I interface [-46abdhnW] [-f address_family]\n" 881 " [-M core] [-N system]", 882 " netstat -w wait [-I interface] [-46d] [-M core] [-N system]\n" 883 " [-q howmany]", 884 " netstat -s [-46sz] [-f protocol_family | -p protocol]\n" 885 " [-M core] [-N system]", 886 " netstat -i | -I interface -s [-46s]\n" 887 " [-f protocol_family | -p protocol] [-M core] [-N system]", 888 " netstat -m [-M core] [-N system]", 889 " netstat -B [-z] [-I interface]", 890 " netstat -r [-46AnW] [-F fibnum] [-f address_family]\n" 891 " [-M core] [-N system]", 892 " netstat -rs [-s] [-M core] [-N system]", 893 " netstat -g [-46W] [-f address_family] [-M core] [-N system]", 894 " netstat -gs [-46s] [-f address_family] [-M core] [-N system]", 895 " netstat -Q"); 896 xo_finish(); 897 exit(1); 898 } 899