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 Pflag; /* show TCP log ID */ 218 static int pflag; /* show given protocol */ 219 static int Qflag; /* show netisr information */ 220 int rflag; /* show routing tables (or routing stats) */ 221 int Rflag; /* show flow / RSS statistics */ 222 int sflag; /* show protocol statistics */ 223 int Wflag; /* wide display */ 224 int Tflag; /* TCP Information */ 225 int xflag; /* extra information, includes all socket buffer info */ 226 int zflag; /* zero stats */ 227 228 int interval; /* repeat interval for i/f stats */ 229 230 char *interface; /* desired i/f for stats, or NULL for all i/fs */ 231 int unit; /* unit number for above */ 232 233 static int af; /* address family */ 234 int live; /* true if we are examining a live system */ 235 236 int 237 main(int argc, char *argv[]) 238 { 239 struct protox *tp = NULL; /* for printing cblocks & stats */ 240 int ch; 241 int fib = -1; 242 char *endptr; 243 bool first = true; 244 245 af = AF_UNSPEC; 246 247 argc = xo_parse_args(argc, argv); 248 if (argc < 0) 249 exit(EXIT_FAILURE); 250 251 while ((ch = getopt(argc, argv, "46AaBbdF:f:ghI:iLlM:mN:nPp:Qq:RrSTsuWw:xz")) 252 != -1) 253 switch(ch) { 254 case '4': 255 #ifdef INET 256 af = AF_INET; 257 #else 258 errx(1, "IPv4 support is not compiled in"); 259 #endif 260 break; 261 case '6': 262 #ifdef INET6 263 af = AF_INET6; 264 #else 265 errx(1, "IPv6 support is not compiled in"); 266 #endif 267 break; 268 case 'A': 269 Aflag = 1; 270 break; 271 case 'a': 272 aflag = 1; 273 break; 274 case 'B': 275 Bflag = 1; 276 break; 277 case 'b': 278 bflag = 1; 279 break; 280 case 'd': 281 dflag = 1; 282 break; 283 case 'F': 284 fib = strtol(optarg, &endptr, 0); 285 if (*endptr != '\0' || 286 (fib == 0 && (errno == EINVAL || errno == ERANGE))) 287 xo_errx(1, "%s: invalid fib", optarg); 288 break; 289 case 'f': 290 if (strcmp(optarg, "inet") == 0) 291 af = AF_INET; 292 #ifdef INET6 293 else if (strcmp(optarg, "inet6") == 0) 294 af = AF_INET6; 295 #endif 296 #ifdef IPSEC 297 else if (strcmp(optarg, "pfkey") == 0) 298 af = PF_KEY; 299 #endif 300 else if (strcmp(optarg, "unix") == 0 || 301 strcmp(optarg, "local") == 0) 302 af = AF_UNIX; 303 #ifdef NETGRAPH 304 else if (strcmp(optarg, "ng") == 0 305 || strcmp(optarg, "netgraph") == 0) 306 af = AF_NETGRAPH; 307 #endif 308 else if (strcmp(optarg, "link") == 0) 309 af = AF_LINK; 310 else { 311 xo_errx(1, "%s: unknown address family", 312 optarg); 313 } 314 break; 315 case 'g': 316 gflag = 1; 317 break; 318 case 'h': 319 hflag = 1; 320 break; 321 case 'I': { 322 char *cp; 323 324 iflag = 1; 325 for (cp = interface = optarg; isalpha(*cp); cp++) 326 continue; 327 unit = atoi(cp); 328 break; 329 } 330 case 'i': 331 iflag = 1; 332 break; 333 case 'L': 334 Lflag = 1; 335 break; 336 case 'M': 337 memf = optarg; 338 break; 339 case 'm': 340 mflag = 1; 341 break; 342 case 'N': 343 nlistf = optarg; 344 break; 345 case 'n': 346 numeric_addr = numeric_port = 1; 347 break; 348 case 'P': 349 Pflag = 1; 350 break; 351 case 'p': 352 if ((tp = name2protox(optarg)) == NULL) { 353 xo_errx(1, "%s: unknown or uninstrumented " 354 "protocol", optarg); 355 } 356 pflag = 1; 357 break; 358 case 'Q': 359 Qflag = 1; 360 break; 361 case 'q': 362 noutputs = atoi(optarg); 363 if (noutputs != 0) 364 noutputs++; 365 break; 366 case 'r': 367 rflag = 1; 368 break; 369 case 'R': 370 Rflag = 1; 371 break; 372 case 's': 373 ++sflag; 374 break; 375 case 'S': 376 numeric_addr = 1; 377 break; 378 case 'u': 379 af = AF_UNIX; 380 break; 381 case 'W': 382 case 'l': 383 Wflag = 1; 384 break; 385 case 'w': 386 interval = atoi(optarg); 387 iflag = 1; 388 break; 389 case 'T': 390 Tflag = 1; 391 break; 392 case 'x': 393 xflag = 1; 394 break; 395 case 'z': 396 zflag = 1; 397 break; 398 case '?': 399 default: 400 usage(); 401 } 402 argv += optind; 403 argc -= optind; 404 405 #define BACKWARD_COMPATIBILITY 406 #ifdef BACKWARD_COMPATIBILITY 407 if (*argv) { 408 if (isdigit(**argv)) { 409 interval = atoi(*argv); 410 if (interval <= 0) 411 usage(); 412 ++argv; 413 iflag = 1; 414 } 415 if (*argv) { 416 nlistf = *argv; 417 if (*++argv) 418 memf = *argv; 419 } 420 } 421 #endif 422 423 /* 424 * Discard setgid privileges if not the running kernel so that bad 425 * guys can't print interesting stuff from kernel memory. 426 */ 427 live = (nlistf == NULL && memf == NULL); 428 if (!live) { 429 if (setgid(getgid()) != 0) 430 xo_err(-1, "setgid"); 431 /* Load all necessary kvm symbols */ 432 kresolve_list(nl); 433 } 434 435 if (xflag && Tflag) 436 xo_errx(1, "-x and -T are incompatible, pick one."); 437 438 if (Bflag) { 439 if (!live) 440 usage(); 441 bpf_stats(interface); 442 xo_finish(); 443 exit(0); 444 } 445 if (mflag) { 446 if (!live) { 447 if (kread(0, NULL, 0) == 0) 448 mbpr(kvmd, nl[N_SFSTAT].n_value); 449 } else 450 mbpr(NULL, 0); 451 xo_finish(); 452 exit(0); 453 } 454 if (Qflag) { 455 if (!live) { 456 if (kread(0, NULL, 0) == 0) 457 netisr_stats(); 458 } else 459 netisr_stats(); 460 xo_finish(); 461 exit(0); 462 } 463 #if 0 464 /* 465 * Keep file descriptors open to avoid overhead 466 * of open/close on each call to get* routines. 467 */ 468 sethostent(1); 469 setnetent(1); 470 #else 471 /* 472 * This does not make sense any more with DNS being default over 473 * the files. Doing a setXXXXent(1) causes a tcp connection to be 474 * used for the queries, which is slower. 475 */ 476 #endif 477 if (iflag && !sflag) { 478 xo_open_container("statistics"); 479 intpr(NULL, af); 480 xo_close_container("statistics"); 481 xo_finish(); 482 exit(0); 483 } 484 if (rflag) { 485 xo_open_container("statistics"); 486 if (sflag) { 487 if (live) { 488 kresolve_list(nl); 489 } 490 rt_stats(); 491 } else 492 routepr(fib, af); 493 xo_close_container("statistics"); 494 xo_finish(); 495 exit(0); 496 } 497 498 if (gflag) { 499 xo_open_container("statistics"); 500 if (sflag) { 501 if (af == AF_INET || af == AF_UNSPEC) 502 mrt_stats(); 503 #ifdef INET6 504 if (af == AF_INET6 || af == AF_UNSPEC) 505 mrt6_stats(); 506 #endif 507 } else { 508 if (af == AF_INET || af == AF_UNSPEC) 509 mroutepr(); 510 #ifdef INET6 511 if (af == AF_INET6 || af == AF_UNSPEC) 512 mroute6pr(); 513 #endif 514 } 515 xo_close_container("statistics"); 516 xo_finish(); 517 exit(0); 518 } 519 520 if (tp) { 521 xo_open_container("statistics"); 522 printproto(tp, tp->pr_name, &first); 523 if (!first) 524 xo_close_list("socket"); 525 xo_close_container("statistics"); 526 xo_finish(); 527 exit(0); 528 } 529 530 xo_open_container("statistics"); 531 if (af == AF_INET || af == AF_UNSPEC) 532 for (tp = protox; tp->pr_name; tp++) 533 printproto(tp, tp->pr_name, &first); 534 #ifdef INET6 535 if (af == AF_INET6 || af == AF_UNSPEC) 536 for (tp = ip6protox; tp->pr_name; tp++) 537 printproto(tp, tp->pr_name, &first); 538 #endif /*INET6*/ 539 #ifdef IPSEC 540 if (af == PF_KEY || af == AF_UNSPEC) 541 for (tp = pfkeyprotox; tp->pr_name; tp++) 542 printproto(tp, tp->pr_name, &first); 543 #endif /*IPSEC*/ 544 #ifdef NETGRAPH 545 if (af == AF_NETGRAPH || af == AF_UNSPEC) 546 for (tp = netgraphprotox; tp->pr_name; tp++) 547 printproto(tp, tp->pr_name, &first); 548 #endif /* NETGRAPH */ 549 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 550 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, 551 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value, 552 nl[N_UNP_SPHEAD].n_value, &first); 553 554 if (!first) 555 xo_close_list("socket"); 556 xo_close_container("statistics"); 557 xo_finish(); 558 exit(0); 559 } 560 561 static int 562 fetch_stats_internal(const char *sysctlname, u_long off, void *stats, 563 size_t len, kreadfn_t kreadfn, int zero) 564 { 565 int error; 566 567 if (live) { 568 memset(stats, 0, len); 569 if (zero) 570 error = sysctlbyname(sysctlname, NULL, NULL, stats, 571 len); 572 else 573 error = sysctlbyname(sysctlname, stats, &len, NULL, 0); 574 if (error == -1 && errno != ENOENT) 575 xo_warn("sysctl %s", sysctlname); 576 } else { 577 if (off == 0) 578 return (1); 579 error = kreadfn(off, stats, len); 580 } 581 return (error); 582 } 583 584 int 585 fetch_stats(const char *sysctlname, u_long off, void *stats, 586 size_t len, kreadfn_t kreadfn) 587 { 588 589 return (fetch_stats_internal(sysctlname, off, stats, len, kreadfn, 590 zflag)); 591 } 592 593 int 594 fetch_stats_ro(const char *sysctlname, u_long off, void *stats, 595 size_t len, kreadfn_t kreadfn) 596 { 597 598 return (fetch_stats_internal(sysctlname, off, stats, len, kreadfn, 0)); 599 } 600 601 /* 602 * Print out protocol statistics or control blocks (per sflag). 603 * If the interface was not specifically requested, and the symbol 604 * is not in the namelist, ignore this one. 605 */ 606 static void 607 printproto(struct protox *tp, const char *name, bool *first) 608 { 609 void (*pr)(u_long, const char *, int, int); 610 u_long off; 611 bool doingdblocks = false; 612 613 if (sflag) { 614 if (iflag) { 615 if (tp->pr_istats) 616 intpr(tp->pr_istats, af); 617 else if (pflag) 618 xo_message("%s: no per-interface stats routine", 619 tp->pr_name); 620 return; 621 } else { 622 pr = tp->pr_stats; 623 if (!pr) { 624 if (pflag) 625 xo_message("%s: no stats routine", 626 tp->pr_name); 627 return; 628 } 629 if (tp->pr_usesysctl && live) 630 off = 0; 631 else if (tp->pr_sindex < 0) { 632 if (pflag) 633 xo_message("%s: stats routine doesn't " 634 "work on cores", tp->pr_name); 635 return; 636 } else 637 off = nl[tp->pr_sindex].n_value; 638 } 639 } else { 640 doingdblocks = true; 641 pr = tp->pr_cblocks; 642 if (!pr) { 643 if (pflag) 644 xo_message("%s: no PCB routine", tp->pr_name); 645 return; 646 } 647 if (tp->pr_usesysctl && live) 648 off = 0; 649 else if (tp->pr_index < 0) { 650 if (pflag) 651 xo_message("%s: PCB routine doesn't work on " 652 "cores", tp->pr_name); 653 return; 654 } else 655 off = nl[tp->pr_index].n_value; 656 } 657 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 658 af != AF_UNSPEC)) { 659 if (doingdblocks && *first) { 660 xo_open_list("socket"); 661 *first = false; 662 } 663 664 (*pr)(off, name, af, tp->pr_protocol); 665 } 666 } 667 668 static int 669 kvmd_init(void) 670 { 671 char errbuf[_POSIX2_LINE_MAX]; 672 673 if (kvmd != NULL) 674 return (0); 675 676 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 677 if (setgid(getgid()) != 0) 678 xo_err(-1, "setgid"); 679 680 if (kvmd == NULL) { 681 xo_warnx("kvm not available: %s", errbuf); 682 return (-1); 683 } 684 685 return (0); 686 } 687 688 /* 689 * Resolve symbol list, return 0 on success. 690 */ 691 static int 692 kresolve_list(struct nlist *_nl) 693 { 694 695 if ((kvmd == NULL) && (kvmd_init() != 0)) 696 return (-1); 697 698 if (_nl[0].n_type != 0) 699 return (0); 700 701 if (kvm_nlist(kvmd, _nl) < 0) { 702 if (nlistf) 703 xo_errx(1, "%s: kvm_nlist: %s", nlistf, 704 kvm_geterr(kvmd)); 705 else 706 xo_errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 707 } 708 709 return (0); 710 } 711 712 /* 713 * Wrapper of kvm_dpcpu_setcpu(). 714 */ 715 void 716 kset_dpcpu(u_int cpuid) 717 { 718 719 if ((kvmd == NULL) && (kvmd_init() != 0)) 720 xo_errx(-1, "%s: kvm is not available", __func__); 721 722 if (kvm_dpcpu_setcpu(kvmd, cpuid) < 0) 723 xo_errx(-1, "%s: kvm_dpcpu_setcpu(%u): %s", __func__, 724 cpuid, kvm_geterr(kvmd)); 725 return; 726 } 727 728 /* 729 * Read kernel memory, return 0 on success. 730 */ 731 int 732 kread(u_long addr, void *buf, size_t size) 733 { 734 735 if (kvmd_init() < 0) 736 return (-1); 737 738 if (!buf) 739 return (0); 740 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 741 xo_warnx("%s", kvm_geterr(kvmd)); 742 return (-1); 743 } 744 return (0); 745 } 746 747 /* 748 * Read single counter(9). 749 */ 750 uint64_t 751 kread_counter(u_long addr) 752 { 753 754 if (kvmd_init() < 0) 755 return (-1); 756 757 return (kvm_counter_u64_fetch(kvmd, addr)); 758 } 759 760 /* 761 * Read an array of N counters in kernel memory into array of N uint64_t's. 762 */ 763 int 764 kread_counters(u_long addr, void *buf, size_t size) 765 { 766 uint64_t *c; 767 u_long *counters; 768 size_t i, n; 769 770 if (kvmd_init() < 0) 771 return (-1); 772 773 if (size % sizeof(uint64_t) != 0) { 774 xo_warnx("kread_counters: invalid counter set size"); 775 return (-1); 776 } 777 778 n = size / sizeof(uint64_t); 779 if ((counters = malloc(n * sizeof(u_long))) == NULL) 780 xo_err(-1, "malloc"); 781 if (kread(addr, counters, n * sizeof(u_long)) < 0) { 782 free(counters); 783 return (-1); 784 } 785 786 c = buf; 787 for (i = 0; i < n; i++) 788 c[i] = kvm_counter_u64_fetch(kvmd, counters[i]); 789 790 free(counters); 791 return (0); 792 } 793 794 const char * 795 plural(uintmax_t n) 796 { 797 return (n != 1 ? "s" : ""); 798 } 799 800 const char * 801 plurales(uintmax_t n) 802 { 803 return (n != 1 ? "es" : ""); 804 } 805 806 const char * 807 pluralies(uintmax_t n) 808 { 809 return (n != 1 ? "ies" : "y"); 810 } 811 812 /* 813 * Find the protox for the given "well-known" name. 814 */ 815 static struct protox * 816 knownname(const char *name) 817 { 818 struct protox **tpp, *tp; 819 820 for (tpp = protoprotox; *tpp; tpp++) 821 for (tp = *tpp; tp->pr_name; tp++) 822 if (strcmp(tp->pr_name, name) == 0) 823 return (tp); 824 return (NULL); 825 } 826 827 /* 828 * Find the protox corresponding to name. 829 */ 830 static struct protox * 831 name2protox(const char *name) 832 { 833 struct protox *tp; 834 char **alias; /* alias from p->aliases */ 835 struct protoent *p; 836 837 /* 838 * Try to find the name in the list of "well-known" names. If that 839 * fails, check if name is an alias for an Internet protocol. 840 */ 841 if ((tp = knownname(name)) != NULL) 842 return (tp); 843 844 setprotoent(1); /* make protocol lookup cheaper */ 845 while ((p = getprotoent()) != NULL) { 846 /* assert: name not same as p->name */ 847 for (alias = p->p_aliases; *alias; alias++) 848 if (strcmp(name, *alias) == 0) { 849 endprotoent(); 850 return (knownname(p->p_name)); 851 } 852 } 853 endprotoent(); 854 return (NULL); 855 } 856 857 static void 858 usage(void) 859 { 860 (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", 861 "usage: netstat [-46AaLnRSTWx] [-f protocol_family | -p protocol]\n" 862 " [-M core] [-N system]", 863 " netstat -i | -I interface [-46abdhnW] [-f address_family]\n" 864 " [-M core] [-N system]", 865 " netstat -w wait [-I interface] [-46d] [-M core] [-N system]\n" 866 " [-q howmany]", 867 " netstat -s [-46sz] [-f protocol_family | -p protocol]\n" 868 " [-M core] [-N system]", 869 " netstat -i | -I interface -s [-46s]\n" 870 " [-f protocol_family | -p protocol] [-M core] [-N system]", 871 " netstat -m [-M core] [-N system]", 872 " netstat -B [-z] [-I interface]", 873 " netstat -r [-46AnW] [-F fibnum] [-f address_family]\n" 874 " [-M core] [-N system]", 875 " netstat -rs [-s] [-M core] [-N system]", 876 " netstat -g [-46W] [-f address_family] [-M core] [-N system]", 877 " netstat -gs [-46s] [-f address_family] [-M core] [-N system]", 878 " netstat -Q"); 879 xo_finish(); 880 exit(1); 881 } 882