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, IPPROTO_DIVERT }, 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 dflag; /* show i/f dropped packets */ 209 int gflag; /* show group (multicast) routing or stats */ 210 int hflag; /* show counters in human readable format */ 211 int iflag; /* show interfaces */ 212 int Lflag; /* show size of listen queues */ 213 int mflag; /* show memory stats */ 214 int noutputs = 0; /* how much outputs before we exit */ 215 int numeric_addr; /* show addresses numerically */ 216 int numeric_port; /* show ports numerically */ 217 int oflag; /* show nexthop objects*/ 218 int Pflag; /* show TCP log ID */ 219 static int pflag; /* show given protocol */ 220 static int Qflag; /* show netisr information */ 221 int rflag; /* show routing tables (or routing stats) */ 222 int Rflag; /* show flow / RSS statistics */ 223 int sflag; /* show protocol statistics */ 224 int Wflag; /* wide display */ 225 int Tflag; /* TCP Information */ 226 int xflag; /* extra information, includes all socket buffer info */ 227 int zflag; /* zero stats */ 228 229 int interval; /* repeat interval for i/f stats */ 230 231 char *interface; /* desired i/f for stats, or NULL for all i/fs */ 232 int unit; /* unit number for above */ 233 234 static int af; /* address family */ 235 int live; /* true if we are examining a live system */ 236 237 int 238 main(int argc, char *argv[]) 239 { 240 struct protox *tp = NULL; /* for printing cblocks & stats */ 241 int ch; 242 int fib = -1; 243 char *endptr; 244 bool first = true; 245 246 af = AF_UNSPEC; 247 248 argc = xo_parse_args(argc, argv); 249 if (argc < 0) 250 exit(EXIT_FAILURE); 251 252 while ((ch = getopt(argc, argv, "46AaBbdF:f:ghI:iLlM:mN:noPp:Qq:RrSTsuWw:xz")) 253 != -1) 254 switch(ch) { 255 case '4': 256 #ifdef INET 257 af = AF_INET; 258 #else 259 errx(1, "IPv4 support is not compiled in"); 260 #endif 261 break; 262 case '6': 263 #ifdef INET6 264 af = AF_INET6; 265 #else 266 errx(1, "IPv6 support is not compiled in"); 267 #endif 268 break; 269 case 'A': 270 Aflag = 1; 271 break; 272 case 'a': 273 aflag = 1; 274 break; 275 case 'B': 276 Bflag = 1; 277 break; 278 case 'b': 279 bflag = 1; 280 break; 281 case 'd': 282 dflag = 1; 283 break; 284 case 'F': 285 fib = strtol(optarg, &endptr, 0); 286 if (*endptr != '\0' || 287 (fib == 0 && (errno == EINVAL || errno == ERANGE))) 288 xo_errx(1, "%s: invalid fib", optarg); 289 break; 290 case 'f': 291 if (strcmp(optarg, "inet") == 0) 292 af = AF_INET; 293 #ifdef INET6 294 else if (strcmp(optarg, "inet6") == 0) 295 af = AF_INET6; 296 #endif 297 #ifdef IPSEC 298 else if (strcmp(optarg, "pfkey") == 0) 299 af = PF_KEY; 300 #endif 301 else if (strcmp(optarg, "unix") == 0 || 302 strcmp(optarg, "local") == 0) 303 af = AF_UNIX; 304 #ifdef NETGRAPH 305 else if (strcmp(optarg, "ng") == 0 306 || strcmp(optarg, "netgraph") == 0) 307 af = AF_NETGRAPH; 308 #endif 309 else if (strcmp(optarg, "link") == 0) 310 af = AF_LINK; 311 else { 312 xo_errx(1, "%s: unknown address family", 313 optarg); 314 } 315 break; 316 case 'g': 317 gflag = 1; 318 break; 319 case 'h': 320 hflag = 1; 321 break; 322 case 'I': { 323 char *cp; 324 325 iflag = 1; 326 for (cp = interface = optarg; isalpha(*cp); cp++) 327 continue; 328 unit = atoi(cp); 329 break; 330 } 331 case 'i': 332 iflag = 1; 333 break; 334 case 'L': 335 Lflag = 1; 336 break; 337 case 'M': 338 memf = optarg; 339 break; 340 case 'm': 341 mflag = 1; 342 break; 343 case 'N': 344 nlistf = optarg; 345 break; 346 case 'n': 347 numeric_addr = numeric_port = 1; 348 break; 349 case 'o': 350 oflag = 1; 351 break; 352 case 'P': 353 Pflag = 1; 354 break; 355 case 'p': 356 if ((tp = name2protox(optarg)) == NULL) { 357 xo_errx(1, "%s: unknown or uninstrumented " 358 "protocol", optarg); 359 } 360 pflag = 1; 361 break; 362 case 'Q': 363 Qflag = 1; 364 break; 365 case 'q': 366 noutputs = atoi(optarg); 367 if (noutputs != 0) 368 noutputs++; 369 break; 370 case 'r': 371 rflag = 1; 372 break; 373 case 'R': 374 Rflag = 1; 375 break; 376 case 's': 377 ++sflag; 378 break; 379 case 'S': 380 numeric_addr = 1; 381 break; 382 case 'u': 383 af = AF_UNIX; 384 break; 385 case 'W': 386 case 'l': 387 Wflag = 1; 388 break; 389 case 'w': 390 interval = atoi(optarg); 391 iflag = 1; 392 break; 393 case 'T': 394 Tflag = 1; 395 break; 396 case 'x': 397 xflag = 1; 398 break; 399 case 'z': 400 zflag = 1; 401 break; 402 case '?': 403 default: 404 usage(); 405 } 406 argv += optind; 407 argc -= optind; 408 409 #define BACKWARD_COMPATIBILITY 410 #ifdef BACKWARD_COMPATIBILITY 411 if (*argv) { 412 if (isdigit(**argv)) { 413 interval = atoi(*argv); 414 if (interval <= 0) 415 usage(); 416 ++argv; 417 iflag = 1; 418 } 419 if (*argv) { 420 nlistf = *argv; 421 if (*++argv) 422 memf = *argv; 423 } 424 } 425 #endif 426 427 /* 428 * Discard setgid privileges if not the running kernel so that bad 429 * guys can't print interesting stuff from kernel memory. 430 */ 431 live = (nlistf == NULL && memf == NULL); 432 if (!live) { 433 if (setgid(getgid()) != 0) 434 xo_err(-1, "setgid"); 435 /* Load all necessary kvm symbols */ 436 kresolve_list(nl); 437 } 438 439 if (xflag && Tflag) 440 xo_errx(1, "-x and -T are incompatible, pick one."); 441 442 if (Bflag) { 443 if (!live) 444 usage(); 445 bpf_stats(interface); 446 xo_finish(); 447 exit(0); 448 } 449 if (mflag) { 450 if (!live) { 451 if (kread(0, NULL, 0) == 0) 452 mbpr(kvmd, nl[N_SFSTAT].n_value); 453 } else 454 mbpr(NULL, 0); 455 xo_finish(); 456 exit(0); 457 } 458 if (Qflag) { 459 if (!live) { 460 if (kread(0, NULL, 0) == 0) 461 netisr_stats(); 462 } else 463 netisr_stats(); 464 xo_finish(); 465 exit(0); 466 } 467 #if 0 468 /* 469 * Keep file descriptors open to avoid overhead 470 * of open/close on each call to get* routines. 471 */ 472 sethostent(1); 473 setnetent(1); 474 #else 475 /* 476 * This does not make sense any more with DNS being default over 477 * the files. Doing a setXXXXent(1) causes a tcp connection to be 478 * used for the queries, which is slower. 479 */ 480 #endif 481 if (iflag && !sflag) { 482 xo_open_container("statistics"); 483 intpr(NULL, af); 484 xo_close_container("statistics"); 485 xo_finish(); 486 exit(0); 487 } 488 if (rflag) { 489 xo_open_container("statistics"); 490 if (sflag) { 491 if (live) { 492 kresolve_list(nl); 493 } 494 rt_stats(); 495 } else 496 routepr(fib, af); 497 xo_close_container("statistics"); 498 xo_finish(); 499 exit(0); 500 } 501 if (oflag) { 502 xo_open_container("statistics"); 503 nhops_print(fib, af); 504 xo_close_container("statistics"); 505 xo_finish(); 506 exit(0); 507 } 508 509 510 if (gflag) { 511 xo_open_container("statistics"); 512 if (sflag) { 513 if (af == AF_INET || af == AF_UNSPEC) 514 mrt_stats(); 515 #ifdef INET6 516 if (af == AF_INET6 || af == AF_UNSPEC) 517 mrt6_stats(); 518 #endif 519 } else { 520 if (af == AF_INET || af == AF_UNSPEC) 521 mroutepr(); 522 #ifdef INET6 523 if (af == AF_INET6 || af == AF_UNSPEC) 524 mroute6pr(); 525 #endif 526 } 527 xo_close_container("statistics"); 528 xo_finish(); 529 exit(0); 530 } 531 532 if (tp) { 533 xo_open_container("statistics"); 534 printproto(tp, tp->pr_name, &first); 535 if (!first) 536 xo_close_list("socket"); 537 xo_close_container("statistics"); 538 xo_finish(); 539 exit(0); 540 } 541 542 xo_open_container("statistics"); 543 if (af == AF_INET || af == AF_UNSPEC) 544 for (tp = protox; tp->pr_name; tp++) 545 printproto(tp, tp->pr_name, &first); 546 #ifdef INET6 547 if (af == AF_INET6 || af == AF_UNSPEC) 548 for (tp = ip6protox; tp->pr_name; tp++) 549 printproto(tp, tp->pr_name, &first); 550 #endif /*INET6*/ 551 #ifdef IPSEC 552 if (af == PF_KEY || af == AF_UNSPEC) 553 for (tp = pfkeyprotox; tp->pr_name; tp++) 554 printproto(tp, tp->pr_name, &first); 555 #endif /*IPSEC*/ 556 #ifdef NETGRAPH 557 if (af == AF_NETGRAPH || af == AF_UNSPEC) 558 for (tp = netgraphprotox; tp->pr_name; tp++) 559 printproto(tp, tp->pr_name, &first); 560 #endif /* NETGRAPH */ 561 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 562 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, 563 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value, 564 nl[N_UNP_SPHEAD].n_value, &first); 565 566 if (!first) 567 xo_close_list("socket"); 568 xo_close_container("statistics"); 569 xo_finish(); 570 exit(0); 571 } 572 573 static int 574 fetch_stats_internal(const char *sysctlname, u_long off, void *stats, 575 size_t len, kreadfn_t kreadfn, int zero) 576 { 577 int error; 578 579 if (live) { 580 memset(stats, 0, len); 581 if (zero) 582 error = sysctlbyname(sysctlname, NULL, NULL, stats, 583 len); 584 else 585 error = sysctlbyname(sysctlname, stats, &len, NULL, 0); 586 if (error == -1 && errno != ENOENT) 587 xo_warn("sysctl %s", sysctlname); 588 } else { 589 if (off == 0) 590 return (1); 591 error = kreadfn(off, stats, len); 592 } 593 return (error); 594 } 595 596 int 597 fetch_stats(const char *sysctlname, u_long off, void *stats, 598 size_t len, kreadfn_t kreadfn) 599 { 600 601 return (fetch_stats_internal(sysctlname, off, stats, len, kreadfn, 602 zflag)); 603 } 604 605 int 606 fetch_stats_ro(const char *sysctlname, u_long off, void *stats, 607 size_t len, kreadfn_t kreadfn) 608 { 609 610 return (fetch_stats_internal(sysctlname, off, stats, len, kreadfn, 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 */ 618 static void 619 printproto(struct protox *tp, const char *name, bool *first) 620 { 621 void (*pr)(u_long, const char *, int, int); 622 u_long off; 623 bool doingdblocks = false; 624 625 if (sflag) { 626 if (iflag) { 627 if (tp->pr_istats) 628 intpr(tp->pr_istats, af); 629 else if (pflag) 630 xo_message("%s: no per-interface stats routine", 631 tp->pr_name); 632 return; 633 } else { 634 pr = tp->pr_stats; 635 if (!pr) { 636 if (pflag) 637 xo_message("%s: no stats routine", 638 tp->pr_name); 639 return; 640 } 641 if (tp->pr_usesysctl && live) 642 off = 0; 643 else if (tp->pr_sindex < 0) { 644 if (pflag) 645 xo_message("%s: stats routine doesn't " 646 "work on cores", tp->pr_name); 647 return; 648 } else 649 off = nl[tp->pr_sindex].n_value; 650 } 651 } else { 652 doingdblocks = true; 653 pr = tp->pr_cblocks; 654 if (!pr) { 655 if (pflag) 656 xo_message("%s: no PCB routine", tp->pr_name); 657 return; 658 } 659 if (tp->pr_usesysctl && live) 660 off = 0; 661 else if (tp->pr_index < 0) { 662 if (pflag) 663 xo_message("%s: PCB routine doesn't work on " 664 "cores", tp->pr_name); 665 return; 666 } else 667 off = nl[tp->pr_index].n_value; 668 } 669 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 670 af != AF_UNSPEC)) { 671 if (doingdblocks && *first) { 672 xo_open_list("socket"); 673 *first = false; 674 } 675 676 (*pr)(off, name, af, tp->pr_protocol); 677 } 678 } 679 680 static int 681 kvmd_init(void) 682 { 683 char errbuf[_POSIX2_LINE_MAX]; 684 685 if (kvmd != NULL) 686 return (0); 687 688 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 689 if (setgid(getgid()) != 0) 690 xo_err(-1, "setgid"); 691 692 if (kvmd == NULL) { 693 xo_warnx("kvm not available: %s", errbuf); 694 return (-1); 695 } 696 697 return (0); 698 } 699 700 /* 701 * Resolve symbol list, return 0 on success. 702 */ 703 static int 704 kresolve_list(struct nlist *_nl) 705 { 706 707 if ((kvmd == NULL) && (kvmd_init() != 0)) 708 return (-1); 709 710 if (_nl[0].n_type != 0) 711 return (0); 712 713 if (kvm_nlist(kvmd, _nl) < 0) { 714 if (nlistf) 715 xo_errx(1, "%s: kvm_nlist: %s", nlistf, 716 kvm_geterr(kvmd)); 717 else 718 xo_errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 719 } 720 721 return (0); 722 } 723 724 /* 725 * Wrapper of kvm_dpcpu_setcpu(). 726 */ 727 void 728 kset_dpcpu(u_int cpuid) 729 { 730 731 if ((kvmd == NULL) && (kvmd_init() != 0)) 732 xo_errx(-1, "%s: kvm is not available", __func__); 733 734 if (kvm_dpcpu_setcpu(kvmd, cpuid) < 0) 735 xo_errx(-1, "%s: kvm_dpcpu_setcpu(%u): %s", __func__, 736 cpuid, kvm_geterr(kvmd)); 737 return; 738 } 739 740 /* 741 * Read kernel memory, return 0 on success. 742 */ 743 int 744 kread(u_long addr, void *buf, size_t size) 745 { 746 747 if (kvmd_init() < 0) 748 return (-1); 749 750 if (!buf) 751 return (0); 752 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 753 xo_warnx("%s", kvm_geterr(kvmd)); 754 return (-1); 755 } 756 return (0); 757 } 758 759 /* 760 * Read single counter(9). 761 */ 762 uint64_t 763 kread_counter(u_long addr) 764 { 765 766 if (kvmd_init() < 0) 767 return (-1); 768 769 return (kvm_counter_u64_fetch(kvmd, addr)); 770 } 771 772 /* 773 * Read an array of N counters in kernel memory into array of N uint64_t's. 774 */ 775 int 776 kread_counters(u_long addr, void *buf, size_t size) 777 { 778 uint64_t *c; 779 u_long *counters; 780 size_t i, n; 781 782 if (kvmd_init() < 0) 783 return (-1); 784 785 if (size % sizeof(uint64_t) != 0) { 786 xo_warnx("kread_counters: invalid counter set size"); 787 return (-1); 788 } 789 790 n = size / sizeof(uint64_t); 791 if ((counters = malloc(n * sizeof(u_long))) == NULL) 792 xo_err(-1, "malloc"); 793 if (kread(addr, counters, n * sizeof(u_long)) < 0) { 794 free(counters); 795 return (-1); 796 } 797 798 c = buf; 799 for (i = 0; i < n; i++) 800 c[i] = kvm_counter_u64_fetch(kvmd, counters[i]); 801 802 free(counters); 803 return (0); 804 } 805 806 const char * 807 plural(uintmax_t n) 808 { 809 return (n != 1 ? "s" : ""); 810 } 811 812 const char * 813 plurales(uintmax_t n) 814 { 815 return (n != 1 ? "es" : ""); 816 } 817 818 const char * 819 pluralies(uintmax_t n) 820 { 821 return (n != 1 ? "ies" : "y"); 822 } 823 824 /* 825 * Find the protox for the given "well-known" name. 826 */ 827 static struct protox * 828 knownname(const char *name) 829 { 830 struct protox **tpp, *tp; 831 832 for (tpp = protoprotox; *tpp; tpp++) 833 for (tp = *tpp; tp->pr_name; tp++) 834 if (strcmp(tp->pr_name, name) == 0) 835 return (tp); 836 return (NULL); 837 } 838 839 /* 840 * Find the protox corresponding to name. 841 */ 842 static struct protox * 843 name2protox(const char *name) 844 { 845 struct protox *tp; 846 char **alias; /* alias from p->aliases */ 847 struct protoent *p; 848 849 /* 850 * Try to find the name in the list of "well-known" names. If that 851 * fails, check if name is an alias for an Internet protocol. 852 */ 853 if ((tp = knownname(name)) != NULL) 854 return (tp); 855 856 setprotoent(1); /* make protocol lookup cheaper */ 857 while ((p = getprotoent()) != NULL) { 858 /* assert: name not same as p->name */ 859 for (alias = p->p_aliases; *alias; alias++) 860 if (strcmp(name, *alias) == 0) { 861 endprotoent(); 862 return (knownname(p->p_name)); 863 } 864 } 865 endprotoent(); 866 return (NULL); 867 } 868 869 static void 870 usage(void) 871 { 872 (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", 873 "usage: netstat [-46AaLnRSTWx] [-f protocol_family | -p protocol]\n" 874 " [-M core] [-N system]", 875 " netstat -i | -I interface [-46abdhnW] [-f address_family]\n" 876 " [-M core] [-N system]", 877 " netstat -w wait [-I interface] [-46d] [-M core] [-N system]\n" 878 " [-q howmany]", 879 " netstat -s [-46sz] [-f protocol_family | -p protocol]\n" 880 " [-M core] [-N system]", 881 " netstat -i | -I interface -s [-46s]\n" 882 " [-f protocol_family | -p protocol] [-M core] [-N system]", 883 " netstat -m [-M core] [-N system]", 884 " netstat -B [-z] [-I interface]", 885 " netstat -r [-46AnW] [-F fibnum] [-f address_family]\n" 886 " [-M core] [-N system]", 887 " netstat -rs [-s] [-M core] [-N system]", 888 " netstat -g [-46W] [-f address_family] [-M core] [-N system]", 889 " netstat -gs [-46s] [-f address_family] [-M core] [-N system]", 890 " netstat -Q"); 891 xo_finish(); 892 exit(1); 893 } 894