1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1988, 1993 5 * Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef lint 33 static char const copyright[] = 34 "@(#) Copyright (c) 1983, 1988, 1993\n\ 35 Regents of the University of California. All rights reserved.\n"; 36 #endif /* not lint */ 37 38 #if 0 39 #ifndef lint 40 static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94"; 41 #endif /* not lint */ 42 #endif 43 44 #include <sys/cdefs.h> 45 __FBSDID("$FreeBSD$"); 46 47 #include <sys/param.h> 48 #include <sys/file.h> 49 #include <sys/protosw.h> 50 #include <sys/socket.h> 51 #include <sys/socketvar.h> 52 #include <sys/sysctl.h> 53 54 #include <netinet/in.h> 55 56 #ifdef NETGRAPH 57 #include <netgraph/ng_socket.h> 58 #endif 59 60 #include <ctype.h> 61 #include <err.h> 62 #include <errno.h> 63 #include <kvm.h> 64 #include <limits.h> 65 #include <netdb.h> 66 #include <nlist.h> 67 #include <paths.h> 68 #include <stdint.h> 69 #include <stdio.h> 70 #include <stdlib.h> 71 #include <stdbool.h> 72 #include <string.h> 73 #include <unistd.h> 74 #include "netstat.h" 75 #include "nl_defs.h" 76 #include <libxo/xo.h> 77 78 static struct protox { 79 int pr_index; /* index into nlist of cb head */ 80 int pr_sindex; /* index into nlist of stat block */ 81 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 82 void (*pr_cblocks)(u_long, const char *, int, int); 83 /* control blocks printing routine */ 84 void (*pr_stats)(u_long, const char *, int, int); 85 /* statistics printing routine */ 86 void (*pr_istats)(char *); /* per/if statistics printing routine */ 87 const char *pr_name; /* well-known name */ 88 int pr_usesysctl; /* non-zero if we use sysctl, not kvm */ 89 int pr_protocol; 90 } protox[] = { 91 { N_TCBINFO, N_TCPSTAT, 1, protopr, 92 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 93 { N_UDBINFO, N_UDPSTAT, 1, protopr, 94 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 95 #ifdef SCTP 96 { -1, N_SCTPSTAT, 1, sctp_protopr, 97 sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP }, 98 #endif 99 #ifdef SDP 100 { -1, -1, 1, protopr, 101 NULL, NULL, "sdp", 1, IPPROTO_TCP }, 102 #endif 103 { N_DIVCBINFO, -1, 1, protopr, 104 NULL, NULL, "divert", 1, 0 }, 105 { N_RIPCBINFO, N_IPSTAT, 1, protopr, 106 ip_stats, NULL, "ip", 1, IPPROTO_RAW }, 107 { N_RIPCBINFO, N_ICMPSTAT, 1, protopr, 108 icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP }, 109 { N_RIPCBINFO, N_IGMPSTAT, 1, protopr, 110 igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP }, 111 #ifdef IPSEC 112 { -1, N_IPSEC4STAT, 1, NULL, /* keep as compat */ 113 ipsec_stats, NULL, "ipsec", 1, 0}, 114 { -1, N_AHSTAT, 1, NULL, 115 ah_stats, NULL, "ah", 1, 0}, 116 { -1, N_ESPSTAT, 1, NULL, 117 esp_stats, NULL, "esp", 1, 0}, 118 { -1, N_IPCOMPSTAT, 1, NULL, 119 ipcomp_stats, NULL, "ipcomp", 1, 0}, 120 #endif 121 { N_RIPCBINFO, N_PIMSTAT, 1, protopr, 122 pim_stats, NULL, "pim", 1, IPPROTO_PIM }, 123 { -1, N_CARPSTATS, 1, NULL, 124 carp_stats, NULL, "carp", 1, 0 }, 125 #ifdef PF 126 { -1, N_PFSYNCSTATS, 1, NULL, 127 pfsync_stats, NULL, "pfsync", 1, 0 }, 128 #endif 129 { -1, N_ARPSTAT, 1, NULL, 130 arp_stats, NULL, "arp", 1, 0 }, 131 { -1, -1, 0, NULL, 132 NULL, NULL, NULL, 0, 0 } 133 }; 134 135 #ifdef INET6 136 static struct protox ip6protox[] = { 137 { N_TCBINFO, N_TCPSTAT, 1, protopr, 138 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 139 { N_UDBINFO, N_UDPSTAT, 1, protopr, 140 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 141 { N_RIPCBINFO, N_IP6STAT, 1, protopr, 142 ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW }, 143 { N_RIPCBINFO, N_ICMP6STAT, 1, protopr, 144 icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 }, 145 #ifdef SDP 146 { -1, -1, 1, protopr, 147 NULL, NULL, "sdp", 1, IPPROTO_TCP }, 148 #endif 149 #ifdef IPSEC 150 { -1, N_IPSEC6STAT, 1, NULL, 151 ipsec_stats, NULL, "ipsec6", 1, 0 }, 152 #endif 153 #ifdef notyet 154 { -1, N_PIM6STAT, 1, NULL, 155 pim6_stats, NULL, "pim6", 1, 0 }, 156 #endif 157 { -1, N_RIP6STAT, 1, NULL, 158 rip6_stats, NULL, "rip6", 1, 0 }, 159 { -1, -1, 0, NULL, 160 NULL, NULL, NULL, 0, 0 } 161 }; 162 #endif /*INET6*/ 163 164 #ifdef IPSEC 165 static struct protox pfkeyprotox[] = { 166 { -1, N_PFKEYSTAT, 1, NULL, 167 pfkey_stats, NULL, "pfkey", 0, 0 }, 168 { -1, -1, 0, NULL, 169 NULL, NULL, NULL, 0, 0 } 170 }; 171 #endif 172 173 #ifdef NETGRAPH 174 static struct protox netgraphprotox[] = { 175 { N_NGSOCKLIST, -1, 1, netgraphprotopr, 176 NULL, NULL, "ctrl", 0, 0 }, 177 { N_NGSOCKLIST, -1, 1, netgraphprotopr, 178 NULL, NULL, "data", 0, 0 }, 179 { -1, -1, 0, NULL, 180 NULL, NULL, NULL, 0, 0 } 181 }; 182 #endif 183 184 static struct protox *protoprotox[] = { 185 protox, 186 #ifdef INET6 187 ip6protox, 188 #endif 189 #ifdef IPSEC 190 pfkeyprotox, 191 #endif 192 NULL }; 193 194 static void printproto(struct protox *, const char *, bool *); 195 static void usage(void); 196 static struct protox *name2protox(const char *); 197 static struct protox *knownname(const char *); 198 199 static int kresolve_list(struct nlist *_nl); 200 201 static kvm_t *kvmd; 202 static char *nlistf = NULL, *memf = NULL; 203 204 int Aflag; /* show addresses of protocol control block */ 205 int aflag; /* show all sockets (including servers) */ 206 static int Bflag; /* show information about bpf consumers */ 207 int bflag; /* show i/f total bytes in/out */ 208 int cflag; /* show TCP congestion control stack */ 209 int Cflag; /* show congestion control algo and vars */ 210 int dflag; /* show i/f dropped packets */ 211 int gflag; /* show group (multicast) routing or stats */ 212 int hflag; /* show counters in human readable format */ 213 int iflag; /* show interfaces */ 214 int Lflag; /* show size of listen queues */ 215 int mflag; /* show memory stats */ 216 int noutputs = 0; /* how much outputs before we exit */ 217 int numeric_addr; /* show addresses numerically */ 218 int numeric_port; /* show ports numerically */ 219 int Oflag; /* show nhgrp objects*/ 220 int oflag; /* show nexthop objects*/ 221 int Pflag; /* show TCP log ID */ 222 static int pflag; /* show given protocol */ 223 static int Qflag; /* show netisr information */ 224 int rflag; /* show routing tables (or routing stats) */ 225 int Rflag; /* show flow / RSS statistics */ 226 int sflag; /* show protocol statistics */ 227 int Wflag; /* wide display */ 228 int Tflag; /* TCP Information */ 229 int xflag; /* extra information, includes all socket buffer info */ 230 int zflag; /* zero stats */ 231 232 int interval; /* repeat interval for i/f stats */ 233 234 char *interface; /* desired i/f for stats, or NULL for all i/fs */ 235 int unit; /* unit number for above */ 236 237 static int af; /* address family */ 238 int live; /* true if we are examining a live system */ 239 240 int 241 main(int argc, char *argv[]) 242 { 243 struct protox *tp = NULL; /* for printing cblocks & stats */ 244 int ch; 245 int fib = -1; 246 char *endptr; 247 bool first = true; 248 249 af = AF_UNSPEC; 250 251 argc = xo_parse_args(argc, argv); 252 if (argc < 0) 253 exit(EXIT_FAILURE); 254 255 while ((ch = getopt(argc, argv, "46AaBbCcdF:f:ghI:iLlM:mN:nOoPp:Qq:RrSTsuWw:xz")) 256 != -1) 257 switch(ch) { 258 case '4': 259 #ifdef INET 260 af = AF_INET; 261 #else 262 errx(1, "IPv4 support is not compiled in"); 263 #endif 264 break; 265 case '6': 266 #ifdef INET6 267 af = AF_INET6; 268 #else 269 errx(1, "IPv6 support is not compiled in"); 270 #endif 271 break; 272 case 'A': 273 Aflag = 1; 274 break; 275 case 'a': 276 aflag = 1; 277 break; 278 case 'B': 279 Bflag = 1; 280 break; 281 case 'b': 282 bflag = 1; 283 break; 284 case 'c': 285 cflag = 1; 286 break; 287 case 'C': 288 Cflag = 1; 289 break; 290 case 'd': 291 dflag = 1; 292 break; 293 case 'F': 294 fib = strtol(optarg, &endptr, 0); 295 if (*endptr != '\0' || 296 (fib == 0 && (errno == EINVAL || errno == ERANGE))) 297 xo_errx(1, "%s: invalid fib", optarg); 298 break; 299 case 'f': 300 if (strcmp(optarg, "inet") == 0) 301 af = AF_INET; 302 #ifdef INET6 303 else if (strcmp(optarg, "inet6") == 0) 304 af = AF_INET6; 305 #endif 306 #ifdef IPSEC 307 else if (strcmp(optarg, "pfkey") == 0) 308 af = PF_KEY; 309 #endif 310 else if (strcmp(optarg, "unix") == 0 || 311 strcmp(optarg, "local") == 0) 312 af = AF_UNIX; 313 #ifdef NETGRAPH 314 else if (strcmp(optarg, "ng") == 0 315 || strcmp(optarg, "netgraph") == 0) 316 af = AF_NETGRAPH; 317 #endif 318 else if (strcmp(optarg, "link") == 0) 319 af = AF_LINK; 320 else { 321 xo_errx(1, "%s: unknown address family", 322 optarg); 323 } 324 break; 325 case 'g': 326 gflag = 1; 327 break; 328 case 'h': 329 hflag = 1; 330 break; 331 case 'I': { 332 char *cp; 333 334 iflag = 1; 335 for (cp = interface = optarg; isalpha(*cp); cp++) 336 continue; 337 unit = atoi(cp); 338 break; 339 } 340 case 'i': 341 iflag = 1; 342 break; 343 case 'L': 344 Lflag = 1; 345 break; 346 case 'M': 347 memf = optarg; 348 break; 349 case 'm': 350 mflag = 1; 351 break; 352 case 'N': 353 nlistf = optarg; 354 break; 355 case 'n': 356 numeric_addr = numeric_port = 1; 357 break; 358 case 'o': 359 oflag = 1; 360 break; 361 case 'O': 362 Oflag = 1; 363 break; 364 case 'P': 365 Pflag = 1; 366 break; 367 case 'p': 368 if ((tp = name2protox(optarg)) == NULL) { 369 xo_errx(1, "%s: unknown or uninstrumented " 370 "protocol", optarg); 371 } 372 pflag = 1; 373 break; 374 case 'Q': 375 Qflag = 1; 376 break; 377 case 'q': 378 noutputs = atoi(optarg); 379 if (noutputs != 0) 380 noutputs++; 381 break; 382 case 'r': 383 rflag = 1; 384 break; 385 case 'R': 386 Rflag = 1; 387 break; 388 case 's': 389 ++sflag; 390 break; 391 case 'S': 392 numeric_addr = 1; 393 break; 394 case 'u': 395 af = AF_UNIX; 396 break; 397 case 'W': 398 case 'l': 399 Wflag = 1; 400 break; 401 case 'w': 402 interval = atoi(optarg); 403 iflag = 1; 404 break; 405 case 'T': 406 Tflag = 1; 407 break; 408 case 'x': 409 xflag = 1; 410 break; 411 case 'z': 412 zflag = 1; 413 break; 414 case '?': 415 default: 416 usage(); 417 } 418 argv += optind; 419 argc -= optind; 420 421 #define BACKWARD_COMPATIBILITY 422 #ifdef BACKWARD_COMPATIBILITY 423 if (*argv) { 424 if (isdigit(**argv)) { 425 interval = atoi(*argv); 426 if (interval <= 0) 427 usage(); 428 ++argv; 429 iflag = 1; 430 } 431 if (*argv) { 432 nlistf = *argv; 433 if (*++argv) 434 memf = *argv; 435 } 436 } 437 #endif 438 439 /* 440 * Discard setgid privileges if not the running kernel so that bad 441 * guys can't print interesting stuff from kernel memory. 442 */ 443 live = (nlistf == NULL && memf == NULL); 444 if (!live) { 445 if (setgid(getgid()) != 0) 446 xo_err(-1, "setgid"); 447 /* Load all necessary kvm symbols */ 448 kresolve_list(nl); 449 } 450 451 if (xflag && Tflag) 452 xo_errx(1, "-x and -T are incompatible, pick one."); 453 454 if (Bflag) { 455 if (!live) 456 usage(); 457 bpf_stats(interface); 458 xo_finish(); 459 exit(0); 460 } 461 if (mflag) { 462 if (!live) { 463 if (kread(0, NULL, 0) == 0) 464 mbpr(kvmd, nl[N_SFSTAT].n_value); 465 } else 466 mbpr(NULL, 0); 467 xo_finish(); 468 exit(0); 469 } 470 if (Qflag) { 471 if (!live) { 472 if (kread(0, NULL, 0) == 0) 473 netisr_stats(); 474 } else 475 netisr_stats(); 476 xo_finish(); 477 exit(0); 478 } 479 #if 0 480 /* 481 * Keep file descriptors open to avoid overhead 482 * of open/close on each call to get* routines. 483 */ 484 sethostent(1); 485 setnetent(1); 486 #else 487 /* 488 * This does not make sense any more with DNS being default over 489 * the files. Doing a setXXXXent(1) causes a tcp connection to be 490 * used for the queries, which is slower. 491 */ 492 #endif 493 if (iflag && !sflag) { 494 xo_open_container("statistics"); 495 intpr(NULL, af); 496 xo_close_container("statistics"); 497 xo_finish(); 498 exit(0); 499 } 500 if (rflag) { 501 xo_open_container("statistics"); 502 if (sflag) { 503 if (live) { 504 kresolve_list(nl); 505 } 506 rt_stats(); 507 } else 508 routepr(fib, af); 509 xo_close_container("statistics"); 510 xo_finish(); 511 exit(0); 512 } 513 if (oflag) { 514 xo_open_container("statistics"); 515 nhops_print(fib, af); 516 xo_close_container("statistics"); 517 xo_finish(); 518 exit(0); 519 } 520 if (Oflag) { 521 xo_open_container("statistics"); 522 nhgrp_print(fib, af); 523 xo_close_container("statistics"); 524 xo_finish(); 525 exit(0); 526 } 527 528 529 530 if (gflag) { 531 xo_open_container("statistics"); 532 if (sflag) { 533 if (af == AF_INET || af == AF_UNSPEC) 534 mrt_stats(); 535 #ifdef INET6 536 if (af == AF_INET6 || af == AF_UNSPEC) 537 mrt6_stats(); 538 #endif 539 } else { 540 if (af == AF_INET || af == AF_UNSPEC) 541 mroutepr(); 542 #ifdef INET6 543 if (af == AF_INET6 || af == AF_UNSPEC) 544 mroute6pr(); 545 #endif 546 } 547 xo_close_container("statistics"); 548 xo_finish(); 549 exit(0); 550 } 551 552 if (tp) { 553 xo_open_container("statistics"); 554 printproto(tp, tp->pr_name, &first); 555 if (!first) 556 xo_close_list("socket"); 557 xo_close_container("statistics"); 558 xo_finish(); 559 exit(0); 560 } 561 562 xo_open_container("statistics"); 563 if (af == AF_INET || af == AF_UNSPEC) 564 for (tp = protox; tp->pr_name; tp++) 565 printproto(tp, tp->pr_name, &first); 566 #ifdef INET6 567 if (af == AF_INET6 || af == AF_UNSPEC) 568 for (tp = ip6protox; tp->pr_name; tp++) 569 printproto(tp, tp->pr_name, &first); 570 #endif /*INET6*/ 571 #ifdef IPSEC 572 if (af == PF_KEY || af == AF_UNSPEC) 573 for (tp = pfkeyprotox; tp->pr_name; tp++) 574 printproto(tp, tp->pr_name, &first); 575 #endif /*IPSEC*/ 576 #ifdef NETGRAPH 577 if (af == AF_NETGRAPH || af == AF_UNSPEC) 578 for (tp = netgraphprotox; tp->pr_name; tp++) 579 printproto(tp, tp->pr_name, &first); 580 #endif /* NETGRAPH */ 581 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 582 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, 583 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value, 584 nl[N_UNP_SPHEAD].n_value, &first); 585 586 if (!first) 587 xo_close_list("socket"); 588 xo_close_container("statistics"); 589 xo_finish(); 590 exit(0); 591 } 592 593 static int 594 fetch_stats_internal(const char *sysctlname, u_long off, void *stats, 595 size_t len, kreadfn_t kreadfn, int zero) 596 { 597 int error; 598 599 if (live) { 600 memset(stats, 0, len); 601 if (zero) 602 error = sysctlbyname(sysctlname, NULL, NULL, stats, 603 len); 604 else 605 error = sysctlbyname(sysctlname, stats, &len, NULL, 0); 606 if (error == -1 && errno != ENOENT) 607 xo_warn("sysctl %s", sysctlname); 608 } else { 609 if (off == 0) 610 return (1); 611 error = kreadfn(off, stats, len); 612 } 613 return (error); 614 } 615 616 int 617 fetch_stats(const char *sysctlname, u_long off, void *stats, 618 size_t len, kreadfn_t kreadfn) 619 { 620 621 return (fetch_stats_internal(sysctlname, off, stats, len, kreadfn, 622 zflag)); 623 } 624 625 int 626 fetch_stats_ro(const char *sysctlname, u_long off, void *stats, 627 size_t len, kreadfn_t kreadfn) 628 { 629 630 return (fetch_stats_internal(sysctlname, off, stats, len, kreadfn, 0)); 631 } 632 633 /* 634 * Print out protocol statistics or control blocks (per sflag). 635 * If the interface was not specifically requested, and the symbol 636 * is not in the namelist, ignore this one. 637 */ 638 static void 639 printproto(struct protox *tp, const char *name, bool *first) 640 { 641 void (*pr)(u_long, const char *, int, int); 642 u_long off; 643 bool doingdblocks = false; 644 645 if (sflag) { 646 if (iflag) { 647 if (tp->pr_istats) 648 intpr(tp->pr_istats, af); 649 else if (pflag) 650 xo_message("%s: no per-interface stats routine", 651 tp->pr_name); 652 return; 653 } else { 654 pr = tp->pr_stats; 655 if (!pr) { 656 if (pflag) 657 xo_message("%s: no stats routine", 658 tp->pr_name); 659 return; 660 } 661 if (tp->pr_usesysctl && live) 662 off = 0; 663 else if (tp->pr_sindex < 0) { 664 if (pflag) 665 xo_message("%s: stats routine doesn't " 666 "work on cores", tp->pr_name); 667 return; 668 } else 669 off = nl[tp->pr_sindex].n_value; 670 } 671 } else { 672 doingdblocks = true; 673 pr = tp->pr_cblocks; 674 if (!pr) { 675 if (pflag) 676 xo_message("%s: no PCB routine", tp->pr_name); 677 return; 678 } 679 if (tp->pr_usesysctl && live) 680 off = 0; 681 else if (tp->pr_index < 0) { 682 if (pflag) 683 xo_message("%s: PCB routine doesn't work on " 684 "cores", tp->pr_name); 685 return; 686 } else 687 off = nl[tp->pr_index].n_value; 688 } 689 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 690 af != AF_UNSPEC)) { 691 if (doingdblocks && *first) { 692 xo_open_list("socket"); 693 *first = false; 694 } 695 696 (*pr)(off, name, af, tp->pr_protocol); 697 } 698 } 699 700 static int 701 kvmd_init(void) 702 { 703 char errbuf[_POSIX2_LINE_MAX]; 704 705 if (kvmd != NULL) 706 return (0); 707 708 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 709 if (setgid(getgid()) != 0) 710 xo_err(-1, "setgid"); 711 712 if (kvmd == NULL) { 713 xo_warnx("kvm not available: %s", errbuf); 714 return (-1); 715 } 716 717 return (0); 718 } 719 720 /* 721 * Resolve symbol list, return 0 on success. 722 */ 723 static int 724 kresolve_list(struct nlist *_nl) 725 { 726 727 if ((kvmd == NULL) && (kvmd_init() != 0)) 728 return (-1); 729 730 if (_nl[0].n_type != 0) 731 return (0); 732 733 if (kvm_nlist(kvmd, _nl) < 0) { 734 if (nlistf) 735 xo_errx(1, "%s: kvm_nlist: %s", nlistf, 736 kvm_geterr(kvmd)); 737 else 738 xo_errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 739 } 740 741 return (0); 742 } 743 744 /* 745 * Wrapper of kvm_dpcpu_setcpu(). 746 */ 747 void 748 kset_dpcpu(u_int cpuid) 749 { 750 751 if ((kvmd == NULL) && (kvmd_init() != 0)) 752 xo_errx(-1, "%s: kvm is not available", __func__); 753 754 if (kvm_dpcpu_setcpu(kvmd, cpuid) < 0) 755 xo_errx(-1, "%s: kvm_dpcpu_setcpu(%u): %s", __func__, 756 cpuid, kvm_geterr(kvmd)); 757 return; 758 } 759 760 /* 761 * Read kernel memory, return 0 on success. 762 */ 763 int 764 kread(u_long addr, void *buf, size_t size) 765 { 766 767 if (kvmd_init() < 0) 768 return (-1); 769 770 if (!buf) 771 return (0); 772 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 773 xo_warnx("%s", kvm_geterr(kvmd)); 774 return (-1); 775 } 776 return (0); 777 } 778 779 /* 780 * Read single counter(9). 781 */ 782 uint64_t 783 kread_counter(u_long addr) 784 { 785 786 if (kvmd_init() < 0) 787 return (-1); 788 789 return (kvm_counter_u64_fetch(kvmd, addr)); 790 } 791 792 /* 793 * Read an array of N counters in kernel memory into array of N uint64_t's. 794 */ 795 int 796 kread_counters(u_long addr, void *buf, size_t size) 797 { 798 uint64_t *c; 799 u_long *counters; 800 size_t i, n; 801 802 if (kvmd_init() < 0) 803 return (-1); 804 805 if (size % sizeof(uint64_t) != 0) { 806 xo_warnx("kread_counters: invalid counter set size"); 807 return (-1); 808 } 809 810 n = size / sizeof(uint64_t); 811 if ((counters = malloc(n * sizeof(u_long))) == NULL) 812 xo_err(-1, "malloc"); 813 if (kread(addr, counters, n * sizeof(u_long)) < 0) { 814 free(counters); 815 return (-1); 816 } 817 818 c = buf; 819 for (i = 0; i < n; i++) 820 c[i] = kvm_counter_u64_fetch(kvmd, counters[i]); 821 822 free(counters); 823 return (0); 824 } 825 826 const char * 827 plural(uintmax_t n) 828 { 829 return (n != 1 ? "s" : ""); 830 } 831 832 const char * 833 plurales(uintmax_t n) 834 { 835 return (n != 1 ? "es" : ""); 836 } 837 838 const char * 839 pluralies(uintmax_t n) 840 { 841 return (n != 1 ? "ies" : "y"); 842 } 843 844 /* 845 * Find the protox for the given "well-known" name. 846 */ 847 static struct protox * 848 knownname(const char *name) 849 { 850 struct protox **tpp, *tp; 851 852 for (tpp = protoprotox; *tpp; tpp++) 853 for (tp = *tpp; tp->pr_name; tp++) 854 if (strcmp(tp->pr_name, name) == 0) 855 return (tp); 856 return (NULL); 857 } 858 859 /* 860 * Find the protox corresponding to name. 861 */ 862 static struct protox * 863 name2protox(const char *name) 864 { 865 struct protox *tp; 866 char **alias; /* alias from p->aliases */ 867 struct protoent *p; 868 869 /* 870 * Try to find the name in the list of "well-known" names. If that 871 * fails, check if name is an alias for an Internet protocol. 872 */ 873 if ((tp = knownname(name)) != NULL) 874 return (tp); 875 876 setprotoent(1); /* make protocol lookup cheaper */ 877 while ((p = getprotoent()) != NULL) { 878 /* assert: name not same as p->name */ 879 for (alias = p->p_aliases; *alias; alias++) 880 if (strcmp(name, *alias) == 0) { 881 endprotoent(); 882 return (knownname(p->p_name)); 883 } 884 } 885 endprotoent(); 886 return (NULL); 887 } 888 889 static void 890 usage(void) 891 { 892 (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", 893 "usage: netstat [-46AaCcLnRSTWx] [-f protocol_family | -p protocol]\n" 894 " [-M core] [-N system]", 895 " netstat -i | -I interface [-46abdhnW] [-f address_family]\n" 896 " [-M core] [-N system]", 897 " netstat -w wait [-I interface] [-46d] [-M core] [-N system]\n" 898 " [-q howmany]", 899 " netstat -s [-46sz] [-f protocol_family | -p protocol]\n" 900 " [-M core] [-N system]", 901 " netstat -i | -I interface -s [-46s]\n" 902 " [-f protocol_family | -p protocol] [-M core] [-N system]", 903 " netstat -m [-M core] [-N system]", 904 " netstat -B [-z] [-I interface]", 905 " netstat -r [-46AnW] [-F fibnum] [-f address_family]\n" 906 " [-M core] [-N system]", 907 " netstat -rs [-s] [-M core] [-N system]", 908 " netstat -g [-46W] [-f address_family] [-M core] [-N system]", 909 " netstat -gs [-46s] [-f address_family] [-M core] [-N system]", 910 " netstat -Q"); 911 xo_finish(); 912 exit(1); 913 } 914