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 static int pflag; /* show given protocol */ 218 static int Qflag; /* show netisr information */ 219 int rflag; /* show routing tables (or routing stats) */ 220 int Rflag; /* show flow / RSS statistics */ 221 int sflag; /* show protocol statistics */ 222 int Wflag; /* wide display */ 223 int Tflag; /* TCP Information */ 224 int xflag; /* extra information, includes all socket buffer info */ 225 int zflag; /* zero stats */ 226 227 int interval; /* repeat interval for i/f stats */ 228 229 char *interface; /* desired i/f for stats, or NULL for all i/fs */ 230 int unit; /* unit number for above */ 231 232 static int af; /* address family */ 233 int live; /* true if we are examining a live system */ 234 235 int 236 main(int argc, char *argv[]) 237 { 238 struct protox *tp = NULL; /* for printing cblocks & stats */ 239 int ch; 240 int fib = -1; 241 char *endptr; 242 bool first = true; 243 244 af = AF_UNSPEC; 245 246 argc = xo_parse_args(argc, argv); 247 if (argc < 0) 248 exit(EXIT_FAILURE); 249 250 while ((ch = getopt(argc, argv, "46AaBbdF:f:ghI:iLlM:mN:np:Qq:RrSTsuWw:xz")) 251 != -1) 252 switch(ch) { 253 case '4': 254 #ifdef INET 255 af = AF_INET; 256 #else 257 errx(1, "IPv4 support is not compiled in"); 258 #endif 259 break; 260 case '6': 261 #ifdef INET6 262 af = AF_INET6; 263 #else 264 errx(1, "IPv6 support is not compiled in"); 265 #endif 266 break; 267 case 'A': 268 Aflag = 1; 269 break; 270 case 'a': 271 aflag = 1; 272 break; 273 case 'B': 274 Bflag = 1; 275 break; 276 case 'b': 277 bflag = 1; 278 break; 279 case 'd': 280 dflag = 1; 281 break; 282 case 'F': 283 fib = strtol(optarg, &endptr, 0); 284 if (*endptr != '\0' || 285 (fib == 0 && (errno == EINVAL || errno == ERANGE))) 286 xo_errx(1, "%s: invalid fib", optarg); 287 break; 288 case 'f': 289 if (strcmp(optarg, "inet") == 0) 290 af = AF_INET; 291 #ifdef INET6 292 else if (strcmp(optarg, "inet6") == 0) 293 af = AF_INET6; 294 #endif 295 #ifdef IPSEC 296 else if (strcmp(optarg, "pfkey") == 0) 297 af = PF_KEY; 298 #endif 299 else if (strcmp(optarg, "unix") == 0 || 300 strcmp(optarg, "local") == 0) 301 af = AF_UNIX; 302 #ifdef NETGRAPH 303 else if (strcmp(optarg, "ng") == 0 304 || strcmp(optarg, "netgraph") == 0) 305 af = AF_NETGRAPH; 306 #endif 307 else if (strcmp(optarg, "link") == 0) 308 af = AF_LINK; 309 else { 310 xo_errx(1, "%s: unknown address family", 311 optarg); 312 } 313 break; 314 case 'g': 315 gflag = 1; 316 break; 317 case 'h': 318 hflag = 1; 319 break; 320 case 'I': { 321 char *cp; 322 323 iflag = 1; 324 for (cp = interface = optarg; isalpha(*cp); cp++) 325 continue; 326 unit = atoi(cp); 327 break; 328 } 329 case 'i': 330 iflag = 1; 331 break; 332 case 'L': 333 Lflag = 1; 334 break; 335 case 'M': 336 memf = optarg; 337 break; 338 case 'm': 339 mflag = 1; 340 break; 341 case 'N': 342 nlistf = optarg; 343 break; 344 case 'n': 345 numeric_addr = numeric_port = 1; 346 break; 347 case 'p': 348 if ((tp = name2protox(optarg)) == NULL) { 349 xo_errx(1, "%s: unknown or uninstrumented " 350 "protocol", optarg); 351 } 352 pflag = 1; 353 break; 354 case 'Q': 355 Qflag = 1; 356 break; 357 case 'q': 358 noutputs = atoi(optarg); 359 if (noutputs != 0) 360 noutputs++; 361 break; 362 case 'r': 363 rflag = 1; 364 break; 365 case 'R': 366 Rflag = 1; 367 break; 368 case 's': 369 ++sflag; 370 break; 371 case 'S': 372 numeric_addr = 1; 373 break; 374 case 'u': 375 af = AF_UNIX; 376 break; 377 case 'W': 378 case 'l': 379 Wflag = 1; 380 break; 381 case 'w': 382 interval = atoi(optarg); 383 iflag = 1; 384 break; 385 case 'T': 386 Tflag = 1; 387 break; 388 case 'x': 389 xflag = 1; 390 break; 391 case 'z': 392 zflag = 1; 393 break; 394 case '?': 395 default: 396 usage(); 397 } 398 argv += optind; 399 argc -= optind; 400 401 #define BACKWARD_COMPATIBILITY 402 #ifdef BACKWARD_COMPATIBILITY 403 if (*argv) { 404 if (isdigit(**argv)) { 405 interval = atoi(*argv); 406 if (interval <= 0) 407 usage(); 408 ++argv; 409 iflag = 1; 410 } 411 if (*argv) { 412 nlistf = *argv; 413 if (*++argv) 414 memf = *argv; 415 } 416 } 417 #endif 418 419 /* 420 * Discard setgid privileges if not the running kernel so that bad 421 * guys can't print interesting stuff from kernel memory. 422 */ 423 live = (nlistf == NULL && memf == NULL); 424 if (!live) { 425 if (setgid(getgid()) != 0) 426 xo_err(-1, "setgid"); 427 /* Load all necessary kvm symbols */ 428 kresolve_list(nl); 429 } 430 431 if (xflag && Tflag) 432 xo_errx(1, "-x and -T are incompatible, pick one."); 433 434 if (Bflag) { 435 if (!live) 436 usage(); 437 bpf_stats(interface); 438 xo_finish(); 439 exit(0); 440 } 441 if (mflag) { 442 if (!live) { 443 if (kread(0, NULL, 0) == 0) 444 mbpr(kvmd, nl[N_SFSTAT].n_value); 445 } else 446 mbpr(NULL, 0); 447 xo_finish(); 448 exit(0); 449 } 450 if (Qflag) { 451 if (!live) { 452 if (kread(0, NULL, 0) == 0) 453 netisr_stats(); 454 } else 455 netisr_stats(); 456 xo_finish(); 457 exit(0); 458 } 459 #if 0 460 /* 461 * Keep file descriptors open to avoid overhead 462 * of open/close on each call to get* routines. 463 */ 464 sethostent(1); 465 setnetent(1); 466 #else 467 /* 468 * This does not make sense any more with DNS being default over 469 * the files. Doing a setXXXXent(1) causes a tcp connection to be 470 * used for the queries, which is slower. 471 */ 472 #endif 473 if (iflag && !sflag) { 474 xo_open_container("statistics"); 475 intpr(NULL, af); 476 xo_close_container("statistics"); 477 xo_finish(); 478 exit(0); 479 } 480 if (rflag) { 481 xo_open_container("statistics"); 482 if (sflag) { 483 rt_stats(); 484 } else 485 routepr(fib, af); 486 xo_close_container("statistics"); 487 xo_finish(); 488 exit(0); 489 } 490 491 if (gflag) { 492 xo_open_container("statistics"); 493 if (sflag) { 494 if (af == AF_INET || af == AF_UNSPEC) 495 mrt_stats(); 496 #ifdef INET6 497 if (af == AF_INET6 || af == AF_UNSPEC) 498 mrt6_stats(); 499 #endif 500 } else { 501 if (af == AF_INET || af == AF_UNSPEC) 502 mroutepr(); 503 #ifdef INET6 504 if (af == AF_INET6 || af == AF_UNSPEC) 505 mroute6pr(); 506 #endif 507 } 508 xo_close_container("statistics"); 509 xo_finish(); 510 exit(0); 511 } 512 513 if (tp) { 514 xo_open_container("statistics"); 515 printproto(tp, tp->pr_name, &first); 516 if (!first) 517 xo_close_list("socket"); 518 xo_close_container("statistics"); 519 xo_finish(); 520 exit(0); 521 } 522 523 xo_open_container("statistics"); 524 if (af == AF_INET || af == AF_UNSPEC) 525 for (tp = protox; tp->pr_name; tp++) 526 printproto(tp, tp->pr_name, &first); 527 #ifdef INET6 528 if (af == AF_INET6 || af == AF_UNSPEC) 529 for (tp = ip6protox; tp->pr_name; tp++) 530 printproto(tp, tp->pr_name, &first); 531 #endif /*INET6*/ 532 #ifdef IPSEC 533 if (af == PF_KEY || af == AF_UNSPEC) 534 for (tp = pfkeyprotox; tp->pr_name; tp++) 535 printproto(tp, tp->pr_name, &first); 536 #endif /*IPSEC*/ 537 #ifdef NETGRAPH 538 if (af == AF_NETGRAPH || af == AF_UNSPEC) 539 for (tp = netgraphprotox; tp->pr_name; tp++) 540 printproto(tp, tp->pr_name, &first); 541 #endif /* NETGRAPH */ 542 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 543 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, 544 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value, 545 nl[N_UNP_SPHEAD].n_value, &first); 546 547 if (!first) 548 xo_close_list("socket"); 549 xo_close_container("statistics"); 550 xo_finish(); 551 exit(0); 552 } 553 554 static int 555 fetch_stats_internal(const char *sysctlname, u_long off, void *stats, 556 size_t len, kreadfn_t kreadfn, int zero) 557 { 558 int error; 559 560 if (live) { 561 memset(stats, 0, len); 562 if (zero) 563 error = sysctlbyname(sysctlname, NULL, NULL, stats, 564 len); 565 else 566 error = sysctlbyname(sysctlname, stats, &len, NULL, 0); 567 if (error == -1 && errno != ENOENT) 568 xo_warn("sysctl %s", sysctlname); 569 } else { 570 if (off == 0) 571 return (1); 572 error = kreadfn(off, stats, len); 573 } 574 return (error); 575 } 576 577 int 578 fetch_stats(const char *sysctlname, u_long off, void *stats, 579 size_t len, kreadfn_t kreadfn) 580 { 581 582 return (fetch_stats_internal(sysctlname, off, stats, len, kreadfn, 583 zflag)); 584 } 585 586 int 587 fetch_stats_ro(const char *sysctlname, u_long off, void *stats, 588 size_t len, kreadfn_t kreadfn) 589 { 590 591 return (fetch_stats_internal(sysctlname, off, stats, len, kreadfn, 0)); 592 } 593 594 /* 595 * Print out protocol statistics or control blocks (per sflag). 596 * If the interface was not specifically requested, and the symbol 597 * is not in the namelist, ignore this one. 598 */ 599 static void 600 printproto(struct protox *tp, const char *name, bool *first) 601 { 602 void (*pr)(u_long, const char *, int, int); 603 u_long off; 604 bool doingdblocks = false; 605 606 if (sflag) { 607 if (iflag) { 608 if (tp->pr_istats) 609 intpr(tp->pr_istats, af); 610 else if (pflag) 611 xo_message("%s: no per-interface stats routine", 612 tp->pr_name); 613 return; 614 } else { 615 pr = tp->pr_stats; 616 if (!pr) { 617 if (pflag) 618 xo_message("%s: no stats routine", 619 tp->pr_name); 620 return; 621 } 622 if (tp->pr_usesysctl && live) 623 off = 0; 624 else if (tp->pr_sindex < 0) { 625 if (pflag) 626 xo_message("%s: stats routine doesn't " 627 "work on cores", tp->pr_name); 628 return; 629 } else 630 off = nl[tp->pr_sindex].n_value; 631 } 632 } else { 633 doingdblocks = true; 634 pr = tp->pr_cblocks; 635 if (!pr) { 636 if (pflag) 637 xo_message("%s: no PCB routine", tp->pr_name); 638 return; 639 } 640 if (tp->pr_usesysctl && live) 641 off = 0; 642 else if (tp->pr_index < 0) { 643 if (pflag) 644 xo_message("%s: PCB routine doesn't work on " 645 "cores", tp->pr_name); 646 return; 647 } else 648 off = nl[tp->pr_index].n_value; 649 } 650 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 651 af != AF_UNSPEC)) { 652 if (doingdblocks && *first) { 653 xo_open_list("socket"); 654 *first = false; 655 } 656 657 (*pr)(off, name, af, tp->pr_protocol); 658 } 659 } 660 661 static int 662 kvmd_init(void) 663 { 664 char errbuf[_POSIX2_LINE_MAX]; 665 666 if (kvmd != NULL) 667 return (0); 668 669 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 670 if (setgid(getgid()) != 0) 671 xo_err(-1, "setgid"); 672 673 if (kvmd == NULL) { 674 xo_warnx("kvm not available: %s", errbuf); 675 return (-1); 676 } 677 678 return (0); 679 } 680 681 /* 682 * Resolve symbol list, return 0 on success. 683 */ 684 static int 685 kresolve_list(struct nlist *_nl) 686 { 687 688 if ((kvmd == NULL) && (kvmd_init() != 0)) 689 return (-1); 690 691 if (_nl[0].n_type != 0) 692 return (0); 693 694 if (kvm_nlist(kvmd, _nl) < 0) { 695 if (nlistf) 696 xo_errx(1, "%s: kvm_nlist: %s", nlistf, 697 kvm_geterr(kvmd)); 698 else 699 xo_errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 700 } 701 702 return (0); 703 } 704 705 /* 706 * Wrapper of kvm_dpcpu_setcpu(). 707 */ 708 void 709 kset_dpcpu(u_int cpuid) 710 { 711 712 if ((kvmd == NULL) && (kvmd_init() != 0)) 713 xo_errx(-1, "%s: kvm is not available", __func__); 714 715 if (kvm_dpcpu_setcpu(kvmd, cpuid) < 0) 716 xo_errx(-1, "%s: kvm_dpcpu_setcpu(%u): %s", __func__, 717 cpuid, kvm_geterr(kvmd)); 718 return; 719 } 720 721 /* 722 * Read kernel memory, return 0 on success. 723 */ 724 int 725 kread(u_long addr, void *buf, size_t size) 726 { 727 728 if (kvmd_init() < 0) 729 return (-1); 730 731 if (!buf) 732 return (0); 733 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 734 xo_warnx("%s", kvm_geterr(kvmd)); 735 return (-1); 736 } 737 return (0); 738 } 739 740 /* 741 * Read single counter(9). 742 */ 743 uint64_t 744 kread_counter(u_long addr) 745 { 746 747 if (kvmd_init() < 0) 748 return (-1); 749 750 return (kvm_counter_u64_fetch(kvmd, addr)); 751 } 752 753 /* 754 * Read an array of N counters in kernel memory into array of N uint64_t's. 755 */ 756 int 757 kread_counters(u_long addr, void *buf, size_t size) 758 { 759 uint64_t *c; 760 u_long *counters; 761 size_t i, n; 762 763 if (kvmd_init() < 0) 764 return (-1); 765 766 if (size % sizeof(uint64_t) != 0) { 767 xo_warnx("kread_counters: invalid counter set size"); 768 return (-1); 769 } 770 771 n = size / sizeof(uint64_t); 772 if ((counters = malloc(n * sizeof(u_long))) == NULL) 773 xo_err(-1, "malloc"); 774 if (kread(addr, counters, n * sizeof(u_long)) < 0) { 775 free(counters); 776 return (-1); 777 } 778 779 c = buf; 780 for (i = 0; i < n; i++) 781 c[i] = kvm_counter_u64_fetch(kvmd, counters[i]); 782 783 free(counters); 784 return (0); 785 } 786 787 const char * 788 plural(uintmax_t n) 789 { 790 return (n != 1 ? "s" : ""); 791 } 792 793 const char * 794 plurales(uintmax_t n) 795 { 796 return (n != 1 ? "es" : ""); 797 } 798 799 const char * 800 pluralies(uintmax_t n) 801 { 802 return (n != 1 ? "ies" : "y"); 803 } 804 805 /* 806 * Find the protox for the given "well-known" name. 807 */ 808 static struct protox * 809 knownname(const char *name) 810 { 811 struct protox **tpp, *tp; 812 813 for (tpp = protoprotox; *tpp; tpp++) 814 for (tp = *tpp; tp->pr_name; tp++) 815 if (strcmp(tp->pr_name, name) == 0) 816 return (tp); 817 return (NULL); 818 } 819 820 /* 821 * Find the protox corresponding to name. 822 */ 823 static struct protox * 824 name2protox(const char *name) 825 { 826 struct protox *tp; 827 char **alias; /* alias from p->aliases */ 828 struct protoent *p; 829 830 /* 831 * Try to find the name in the list of "well-known" names. If that 832 * fails, check if name is an alias for an Internet protocol. 833 */ 834 if ((tp = knownname(name)) != NULL) 835 return (tp); 836 837 setprotoent(1); /* make protocol lookup cheaper */ 838 while ((p = getprotoent()) != NULL) { 839 /* assert: name not same as p->name */ 840 for (alias = p->p_aliases; *alias; alias++) 841 if (strcmp(name, *alias) == 0) { 842 endprotoent(); 843 return (knownname(p->p_name)); 844 } 845 } 846 endprotoent(); 847 return (NULL); 848 } 849 850 static void 851 usage(void) 852 { 853 (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", 854 "usage: netstat [-46AaLnRSTWx] [-f protocol_family | -p protocol]\n" 855 " [-M core] [-N system]", 856 " netstat -i | -I interface [-46abdhnW] [-f address_family]\n" 857 " [-M core] [-N system]", 858 " netstat -w wait [-I interface] [-46d] [-M core] [-N system]\n" 859 " [-q howmany]", 860 " netstat -s [-46sz] [-f protocol_family | -p protocol]\n" 861 " [-M core] [-N system]", 862 " netstat -i | -I interface -s [-46s]\n" 863 " [-f protocol_family | -p protocol] [-M core] [-N system]", 864 " netstat -m [-M core] [-N system]", 865 " netstat -B [-z] [-I interface]", 866 " netstat -r [-46AnW] [-F fibnum] [-f address_family]\n" 867 " [-M core] [-N system]", 868 " netstat -rs [-s] [-M core] [-N system]", 869 " netstat -g [-46W] [-f address_family] [-M core] [-N system]", 870 " netstat -gs [-46s] [-f address_family] [-M core] [-N system]", 871 " netstat -Q"); 872 xo_finish(); 873 exit(1); 874 } 875