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