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 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 51 #include <netinet/in.h> 52 53 #ifdef NETGRAPH 54 #include <netgraph/ng_socket.h> 55 #endif 56 57 #include <ctype.h> 58 #include <err.h> 59 #include <errno.h> 60 #include <kvm.h> 61 #include <limits.h> 62 #include <netdb.h> 63 #include <nlist.h> 64 #include <paths.h> 65 #include <stdint.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <unistd.h> 70 #include "netstat.h" 71 72 static struct nlist nl[] = { 73 #define N_RTSTAT 0 74 { .n_name = "_rtstat" }, 75 #define N_RTREE 1 76 { .n_name = "_rt_tables"}, 77 #define N_MRTSTAT 2 78 { .n_name = "_mrtstat" }, 79 #define N_MFCHASHTBL 3 80 { .n_name = "_mfchashtbl" }, 81 #define N_VIFTABLE 4 82 { .n_name = "_viftable" }, 83 #define N_NGSOCKS 5 84 { .n_name = "_ngsocklist"}, 85 #define N_IP6STAT 6 86 { .n_name = "_ip6stat" }, 87 #define N_ICMP6STAT 7 88 { .n_name = "_icmp6stat" }, 89 #define N_IPSECSTAT 8 90 { .n_name = "_ipsec4stat" }, 91 #define N_IPSEC6STAT 9 92 { .n_name = "_ipsec6stat" }, 93 #define N_PIM6STAT 10 94 { .n_name = "_pim6stat" }, 95 #define N_MRT6STAT 11 96 { .n_name = "_mrt6stat" }, 97 #define N_MF6CTABLE 12 98 { .n_name = "_mf6ctable" }, 99 #define N_MIF6TABLE 13 100 { .n_name = "_mif6table" }, 101 #define N_PFKEYSTAT 14 102 { .n_name = "_pfkeystat" }, 103 #define N_RTTRASH 15 104 { .n_name = "_rttrash" }, 105 #define N_CARPSTAT 16 106 { .n_name = "_carpstats" }, 107 #define N_PFSYNCSTAT 17 108 { .n_name = "_pfsyncstats" }, 109 #define N_AHSTAT 18 110 { .n_name = "_ahstat" }, 111 #define N_ESPSTAT 19 112 { .n_name = "_espstat" }, 113 #define N_IPCOMPSTAT 20 114 { .n_name = "_ipcompstat" }, 115 #define N_TCPSTAT 21 116 { .n_name = "_tcpstat" }, 117 #define N_UDPSTAT 22 118 { .n_name = "_udpstat" }, 119 #define N_IPSTAT 23 120 { .n_name = "_ipstat" }, 121 #define N_ICMPSTAT 24 122 { .n_name = "_icmpstat" }, 123 #define N_IGMPSTAT 25 124 { .n_name = "_igmpstat" }, 125 #define N_PIMSTAT 26 126 { .n_name = "_pimstat" }, 127 #define N_TCBINFO 27 128 { .n_name = "_tcbinfo" }, 129 #define N_UDBINFO 28 130 { .n_name = "_udbinfo" }, 131 #define N_DIVCBINFO 29 132 { .n_name = "_divcbinfo" }, 133 #define N_RIPCBINFO 30 134 { .n_name = "_ripcbinfo" }, 135 #define N_UNP_COUNT 31 136 { .n_name = "_unp_count" }, 137 #define N_UNP_GENCNT 32 138 { .n_name = "_unp_gencnt" }, 139 #define N_UNP_DHEAD 33 140 { .n_name = "_unp_dhead" }, 141 #define N_UNP_SHEAD 34 142 { .n_name = "_unp_shead" }, 143 #define N_RIP6STAT 36 144 { .n_name = "_rip6stat" }, 145 #define N_SCTPSTAT 36 146 { .n_name = "_sctpstat" }, 147 #define N_MFCTABLESIZE 37 148 { .n_name = "_mfctablesize" }, 149 #define N_ARPSTAT 38 150 { .n_name = "_arpstat" }, 151 #define N_UNP_SPHEAD 39 152 { .n_name = "unp_sphead" }, 153 #define N_SFSTAT 40 154 { .n_name = "_sfstat"}, 155 { .n_name = NULL }, 156 }; 157 158 struct protox { 159 int pr_index; /* index into nlist of cb head */ 160 int pr_sindex; /* index into nlist of stat block */ 161 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 162 void (*pr_cblocks)(u_long, const char *, int, int); 163 /* control blocks printing routine */ 164 void (*pr_stats)(u_long, const char *, int, int); 165 /* statistics printing routine */ 166 void (*pr_istats)(char *); /* per/if statistics printing routine */ 167 const char *pr_name; /* well-known name */ 168 int pr_usesysctl; /* non-zero if we use sysctl, not kvm */ 169 int pr_protocol; 170 } protox[] = { 171 { N_TCBINFO, N_TCPSTAT, 1, protopr, 172 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 173 { N_UDBINFO, N_UDPSTAT, 1, protopr, 174 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 175 #ifdef SCTP 176 { -1, N_SCTPSTAT, 1, sctp_protopr, 177 sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP }, 178 #endif 179 #ifdef SDP 180 { -1, -1, 1, protopr, 181 NULL, NULL, "sdp", 1, IPPROTO_TCP }, 182 #endif 183 { N_DIVCBINFO, -1, 1, protopr, 184 NULL, NULL, "divert", 1, IPPROTO_DIVERT }, 185 { N_RIPCBINFO, N_IPSTAT, 1, protopr, 186 ip_stats, NULL, "ip", 1, IPPROTO_RAW }, 187 { N_RIPCBINFO, N_ICMPSTAT, 1, protopr, 188 icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP }, 189 { N_RIPCBINFO, N_IGMPSTAT, 1, protopr, 190 igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP }, 191 #ifdef IPSEC 192 { -1, N_IPSECSTAT, 1, NULL, /* keep as compat */ 193 ipsec_stats, NULL, "ipsec", 0, 0}, 194 { -1, N_AHSTAT, 1, NULL, 195 ah_stats, NULL, "ah", 0, 0}, 196 { -1, N_ESPSTAT, 1, NULL, 197 esp_stats, NULL, "esp", 0, 0}, 198 { -1, N_IPCOMPSTAT, 1, NULL, 199 ipcomp_stats, NULL, "ipcomp", 0, 0}, 200 #endif 201 { N_RIPCBINFO, N_PIMSTAT, 1, protopr, 202 pim_stats, NULL, "pim", 1, IPPROTO_PIM }, 203 { -1, N_CARPSTAT, 1, NULL, 204 carp_stats, NULL, "carp", 1, 0 }, 205 #ifdef PF 206 { -1, N_PFSYNCSTAT, 1, NULL, 207 pfsync_stats, NULL, "pfsync", 1, 0 }, 208 #endif 209 { -1, N_ARPSTAT, 1, NULL, 210 arp_stats, NULL, "arp", 1, 0 }, 211 { -1, -1, 0, NULL, 212 NULL, NULL, NULL, 0, 0 } 213 }; 214 215 #ifdef INET6 216 struct protox ip6protox[] = { 217 { N_TCBINFO, N_TCPSTAT, 1, protopr, 218 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 219 { N_UDBINFO, N_UDPSTAT, 1, protopr, 220 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 221 { N_RIPCBINFO, N_IP6STAT, 1, protopr, 222 ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW }, 223 { N_RIPCBINFO, N_ICMP6STAT, 1, protopr, 224 icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 }, 225 #ifdef SDP 226 { -1, -1, 1, protopr, 227 NULL, NULL, "sdp", 1, IPPROTO_TCP }, 228 #endif 229 #ifdef IPSEC 230 { -1, N_IPSEC6STAT, 1, NULL, 231 ipsec_stats, NULL, "ipsec6", 0, 0 }, 232 #endif 233 #ifdef notyet 234 { -1, N_PIM6STAT, 1, NULL, 235 pim6_stats, NULL, "pim6", 1, 0 }, 236 #endif 237 { -1, N_RIP6STAT, 1, NULL, 238 rip6_stats, NULL, "rip6", 1, 0 }, 239 { -1, -1, 0, NULL, 240 NULL, NULL, NULL, 0, 0 } 241 }; 242 #endif /*INET6*/ 243 244 #ifdef IPSEC 245 struct protox pfkeyprotox[] = { 246 { -1, N_PFKEYSTAT, 1, NULL, 247 pfkey_stats, NULL, "pfkey", 0, 0 }, 248 { -1, -1, 0, NULL, 249 NULL, NULL, NULL, 0, 0 } 250 }; 251 #endif 252 253 #ifdef NETGRAPH 254 struct protox netgraphprotox[] = { 255 { N_NGSOCKS, -1, 1, netgraphprotopr, 256 NULL, NULL, "ctrl", 0, 0 }, 257 { N_NGSOCKS, -1, 1, netgraphprotopr, 258 NULL, NULL, "data", 0, 0 }, 259 { -1, -1, 0, NULL, 260 NULL, NULL, NULL, 0, 0 } 261 }; 262 #endif 263 264 struct protox *protoprotox[] = { 265 protox, 266 #ifdef INET6 267 ip6protox, 268 #endif 269 #ifdef IPSEC 270 pfkeyprotox, 271 #endif 272 NULL }; 273 274 static void printproto(struct protox *, const char *); 275 static void usage(void); 276 static struct protox *name2protox(const char *); 277 static struct protox *knownname(const char *); 278 279 static kvm_t *kvmd; 280 static char *nlistf = NULL, *memf = NULL; 281 282 int Aflag; /* show addresses of protocol control block */ 283 int aflag; /* show all sockets (including servers) */ 284 int Bflag; /* show information about bpf consumers */ 285 int bflag; /* show i/f total bytes in/out */ 286 int dflag; /* show i/f dropped packets */ 287 int gflag; /* show group (multicast) routing or stats */ 288 int hflag; /* show counters in human readable format */ 289 int iflag; /* show interfaces */ 290 int Lflag; /* show size of listen queues */ 291 int mflag; /* show memory stats */ 292 int noutputs = 0; /* how much outputs before we exit */ 293 int numeric_addr; /* show addresses numerically */ 294 int numeric_port; /* show ports numerically */ 295 static int pflag; /* show given protocol */ 296 int Qflag; /* show netisr information */ 297 int rflag; /* show routing tables (or routing stats) */ 298 int Rflag; /* show flow / RSS statistics */ 299 int sflag; /* show protocol statistics */ 300 int Wflag; /* wide display */ 301 int Tflag; /* TCP Information */ 302 int xflag; /* extra information, includes all socket buffer info */ 303 int zflag; /* zero stats */ 304 305 int interval; /* repeat interval for i/f stats */ 306 307 char *interface; /* desired i/f for stats, or NULL for all i/fs */ 308 int unit; /* unit number for above */ 309 310 int af; /* address family */ 311 int live; /* true if we are examining a live system */ 312 313 int 314 main(int argc, char *argv[]) 315 { 316 struct protox *tp = NULL; /* for printing cblocks & stats */ 317 int ch; 318 int fib = -1; 319 char *endptr; 320 321 af = AF_UNSPEC; 322 323 while ((ch = getopt(argc, argv, "46AaBbdF:f:ghI:iLlM:mN:np:Qq:RrSTsuWw:xz")) 324 != -1) 325 switch(ch) { 326 case '4': 327 #ifdef INET 328 af = AF_INET; 329 #else 330 errx(1, "IPv4 support is not compiled in"); 331 #endif 332 break; 333 case '6': 334 #ifdef INET6 335 af = AF_INET6; 336 #else 337 errx(1, "IPv6 support is not compiled in"); 338 #endif 339 break; 340 case 'A': 341 Aflag = 1; 342 break; 343 case 'a': 344 aflag = 1; 345 break; 346 case 'B': 347 Bflag = 1; 348 break; 349 case 'b': 350 bflag = 1; 351 break; 352 case 'd': 353 dflag = 1; 354 break; 355 case 'F': 356 fib = strtol(optarg, &endptr, 0); 357 if (*endptr != '\0' || 358 (fib == 0 && (errno == EINVAL || errno == ERANGE))) 359 errx(1, "%s: invalid fib", optarg); 360 break; 361 case 'f': 362 if (strcmp(optarg, "inet") == 0) 363 af = AF_INET; 364 #ifdef INET6 365 else if (strcmp(optarg, "inet6") == 0) 366 af = AF_INET6; 367 #endif 368 #ifdef IPSEC 369 else if (strcmp(optarg, "pfkey") == 0) 370 af = PF_KEY; 371 #endif 372 else if (strcmp(optarg, "unix") == 0) 373 af = AF_UNIX; 374 #ifdef NETGRAPH 375 else if (strcmp(optarg, "ng") == 0 376 || strcmp(optarg, "netgraph") == 0) 377 af = AF_NETGRAPH; 378 #endif 379 else if (strcmp(optarg, "link") == 0) 380 af = AF_LINK; 381 else { 382 errx(1, "%s: unknown address family", optarg); 383 } 384 break; 385 case 'g': 386 gflag = 1; 387 break; 388 case 'h': 389 hflag = 1; 390 break; 391 case 'I': { 392 char *cp; 393 394 iflag = 1; 395 for (cp = interface = optarg; isalpha(*cp); cp++) 396 continue; 397 unit = atoi(cp); 398 break; 399 } 400 case 'i': 401 iflag = 1; 402 break; 403 case 'L': 404 Lflag = 1; 405 break; 406 case 'M': 407 memf = optarg; 408 break; 409 case 'm': 410 mflag = 1; 411 break; 412 case 'N': 413 nlistf = optarg; 414 break; 415 case 'n': 416 numeric_addr = numeric_port = 1; 417 break; 418 case 'p': 419 if ((tp = name2protox(optarg)) == NULL) { 420 errx(1, 421 "%s: unknown or uninstrumented protocol", 422 optarg); 423 } 424 pflag = 1; 425 break; 426 case 'Q': 427 Qflag = 1; 428 break; 429 case 'q': 430 noutputs = atoi(optarg); 431 if (noutputs != 0) 432 noutputs++; 433 break; 434 case 'r': 435 rflag = 1; 436 break; 437 case 'R': 438 Rflag = 1; 439 break; 440 case 's': 441 ++sflag; 442 break; 443 case 'S': 444 numeric_addr = 1; 445 break; 446 case 'u': 447 af = AF_UNIX; 448 break; 449 case 'W': 450 case 'l': 451 Wflag = 1; 452 break; 453 case 'w': 454 interval = atoi(optarg); 455 iflag = 1; 456 break; 457 case 'T': 458 Tflag = 1; 459 break; 460 case 'x': 461 xflag = 1; 462 break; 463 case 'z': 464 zflag = 1; 465 break; 466 case '?': 467 default: 468 usage(); 469 } 470 argv += optind; 471 argc -= optind; 472 473 #define BACKWARD_COMPATIBILITY 474 #ifdef BACKWARD_COMPATIBILITY 475 if (*argv) { 476 if (isdigit(**argv)) { 477 interval = atoi(*argv); 478 if (interval <= 0) 479 usage(); 480 ++argv; 481 iflag = 1; 482 } 483 if (*argv) { 484 nlistf = *argv; 485 if (*++argv) 486 memf = *argv; 487 } 488 } 489 #endif 490 491 /* 492 * Discard setgid privileges if not the running kernel so that bad 493 * guys can't print interesting stuff from kernel memory. 494 */ 495 live = (nlistf == NULL && memf == NULL); 496 if (!live) 497 setgid(getgid()); 498 499 if (xflag && Tflag) 500 errx(1, "-x and -T are incompatible, pick one."); 501 502 if (Bflag) { 503 if (!live) 504 usage(); 505 bpf_stats(interface); 506 exit(0); 507 } 508 if (mflag) { 509 if (!live) { 510 if (kread(0, NULL, 0) == 0) 511 mbpr(kvmd, nl[N_SFSTAT].n_value); 512 } else 513 mbpr(NULL, 0); 514 exit(0); 515 } 516 if (Qflag) { 517 if (!live) { 518 if (kread(0, NULL, 0) == 0) 519 netisr_stats(kvmd); 520 } else 521 netisr_stats(NULL); 522 exit(0); 523 } 524 #if 0 525 /* 526 * Keep file descriptors open to avoid overhead 527 * of open/close on each call to get* routines. 528 */ 529 sethostent(1); 530 setnetent(1); 531 #else 532 /* 533 * This does not make sense any more with DNS being default over 534 * the files. Doing a setXXXXent(1) causes a tcp connection to be 535 * used for the queries, which is slower. 536 */ 537 #endif 538 if (iflag && !sflag) { 539 intpr(interval, NULL, af); 540 exit(0); 541 } 542 if (rflag) { 543 if (sflag) { 544 rt_stats(); 545 flowtable_stats(); 546 } else 547 routepr(fib, af); 548 exit(0); 549 } 550 551 if (gflag) { 552 if (sflag) { 553 if (af == AF_INET || af == AF_UNSPEC) 554 mrt_stats(); 555 #ifdef INET6 556 if (af == AF_INET6 || af == AF_UNSPEC) 557 mrt6_stats(); 558 #endif 559 } else { 560 if (af == AF_INET || af == AF_UNSPEC) 561 mroutepr(); 562 #ifdef INET6 563 if (af == AF_INET6 || af == AF_UNSPEC) 564 mroute6pr(); 565 #endif 566 } 567 exit(0); 568 } 569 570 /* Load all necessary kvm symbols */ 571 kresolve_list(nl); 572 573 if (tp) { 574 printproto(tp, tp->pr_name); 575 exit(0); 576 } 577 if (af == AF_INET || af == AF_UNSPEC) 578 for (tp = protox; tp->pr_name; tp++) 579 printproto(tp, tp->pr_name); 580 #ifdef INET6 581 if (af == AF_INET6 || af == AF_UNSPEC) 582 for (tp = ip6protox; tp->pr_name; tp++) 583 printproto(tp, tp->pr_name); 584 #endif /*INET6*/ 585 #ifdef IPSEC 586 if (af == PF_KEY || af == AF_UNSPEC) 587 for (tp = pfkeyprotox; tp->pr_name; tp++) 588 printproto(tp, tp->pr_name); 589 #endif /*IPSEC*/ 590 #ifdef NETGRAPH 591 if (af == AF_NETGRAPH || af == AF_UNSPEC) 592 for (tp = netgraphprotox; tp->pr_name; tp++) 593 printproto(tp, tp->pr_name); 594 #endif /* NETGRAPH */ 595 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 596 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, 597 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value, 598 nl[N_UNP_SPHEAD].n_value); 599 exit(0); 600 } 601 602 /* 603 * Print out protocol statistics or control blocks (per sflag). 604 * If the interface was not specifically requested, and the symbol 605 * is not in the namelist, ignore this one. 606 */ 607 static void 608 printproto(struct protox *tp, const char *name) 609 { 610 void (*pr)(u_long, const char *, int, int); 611 u_long off; 612 613 if (sflag) { 614 if (iflag) { 615 if (tp->pr_istats) 616 intpr(interval, tp->pr_istats, af); 617 else if (pflag) 618 printf("%s: no per-interface stats routine\n", 619 tp->pr_name); 620 return; 621 } else { 622 pr = tp->pr_stats; 623 if (!pr) { 624 if (pflag) 625 printf("%s: no stats routine\n", 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 printf( 634 "%s: stats routine doesn't work on cores\n", 635 tp->pr_name); 636 return; 637 } else 638 off = nl[tp->pr_sindex].n_value; 639 } 640 } else { 641 pr = tp->pr_cblocks; 642 if (!pr) { 643 if (pflag) 644 printf("%s: no PCB routine\n", 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 printf( 652 "%s: PCB routine doesn't work on cores\n", 653 tp->pr_name); 654 return; 655 } else 656 off = nl[tp->pr_index].n_value; 657 } 658 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 659 af != AF_UNSPEC)) 660 (*pr)(off, name, af, tp->pr_protocol); 661 } 662 663 static int 664 kvmd_init(void) 665 { 666 char errbuf[_POSIX2_LINE_MAX]; 667 668 if (kvmd != NULL) 669 return (0); 670 671 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 672 setgid(getgid()); 673 674 if (kvmd == NULL) { 675 warnx("kvm not available: %s", errbuf); 676 return (-1); 677 } 678 679 return (0); 680 } 681 682 /* 683 * Resolve symbol list, return 0 on success. 684 */ 685 int 686 kresolve_list(struct nlist *_nl) 687 { 688 689 if ((kvmd == NULL) && (kvmd_init() != 0)) 690 return (-1); 691 692 if (_nl[0].n_type != 0) 693 return (0); 694 695 if (kvm_nlist(kvmd, _nl) < 0) { 696 if (nlistf) 697 errx(1, "%s: kvm_nlist: %s", nlistf, 698 kvm_geterr(kvmd)); 699 else 700 errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 701 } 702 703 return (0); 704 } 705 706 /* 707 * Read kernel memory, return 0 on success. 708 */ 709 int 710 kread(u_long addr, void *buf, size_t size) 711 { 712 713 if (kvmd_init() < 0) 714 return (-1); 715 716 if (!buf) 717 return (0); 718 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 719 warnx("%s", kvm_geterr(kvmd)); 720 return (-1); 721 } 722 return (0); 723 } 724 725 /* 726 * Read single counter(9). 727 */ 728 uint64_t 729 kread_counter(u_long addr) 730 { 731 732 if (kvmd_init() < 0) 733 return (-1); 734 735 return (kvm_counter_u64_fetch(kvmd, addr)); 736 } 737 738 /* 739 * Read an array of N counters in kernel memory into array of N uint64_t's. 740 */ 741 int 742 kread_counters(u_long addr, void *buf, size_t size) 743 { 744 uint64_t *c = buf; 745 746 if (kvmd_init() < 0) 747 return (-1); 748 749 if (kread(addr, buf, size) < 0) 750 return (-1); 751 752 while (size != 0) { 753 *c = kvm_counter_u64_fetch(kvmd, *c); 754 size -= sizeof(*c); 755 c++; 756 } 757 return (0); 758 } 759 760 const char * 761 plural(uintmax_t n) 762 { 763 return (n != 1 ? "s" : ""); 764 } 765 766 const char * 767 plurales(uintmax_t n) 768 { 769 return (n != 1 ? "es" : ""); 770 } 771 772 const char * 773 pluralies(uintmax_t n) 774 { 775 return (n != 1 ? "ies" : "y"); 776 } 777 778 /* 779 * Find the protox for the given "well-known" name. 780 */ 781 static struct protox * 782 knownname(const char *name) 783 { 784 struct protox **tpp, *tp; 785 786 for (tpp = protoprotox; *tpp; tpp++) 787 for (tp = *tpp; tp->pr_name; tp++) 788 if (strcmp(tp->pr_name, name) == 0) 789 return (tp); 790 return (NULL); 791 } 792 793 /* 794 * Find the protox corresponding to name. 795 */ 796 static struct protox * 797 name2protox(const char *name) 798 { 799 struct protox *tp; 800 char **alias; /* alias from p->aliases */ 801 struct protoent *p; 802 803 /* 804 * Try to find the name in the list of "well-known" names. If that 805 * fails, check if name is an alias for an Internet protocol. 806 */ 807 if ((tp = knownname(name)) != NULL) 808 return (tp); 809 810 setprotoent(1); /* make protocol lookup cheaper */ 811 while ((p = getprotoent()) != NULL) { 812 /* assert: name not same as p->name */ 813 for (alias = p->p_aliases; *alias; alias++) 814 if (strcmp(name, *alias) == 0) { 815 endprotoent(); 816 return (knownname(p->p_name)); 817 } 818 } 819 endprotoent(); 820 return (NULL); 821 } 822 823 static void 824 usage(void) 825 { 826 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n", 827 "usage: netstat [-46AaLnRSTWx] [-f protocol_family | -p protocol]\n" 828 " [-M core] [-N system]", 829 " netstat -i | -I interface [-46abdhnW] [-f address_family]\n" 830 " [-M core] [-N system]", 831 " netstat -w wait [-I interface] [-46d] [-M core] [-N system]\n" 832 " [-q howmany]", 833 " netstat -s [-46sz] [-f protocol_family | -p protocol]\n" 834 " [-M core] [-N system]", 835 " netstat -i | -I interface -s [-46s]\n" 836 " [-f protocol_family | -p protocol] [-M core] [-N system]", 837 " netstat -m [-M core] [-N system]", 838 " netstat -B [-z] [-I interface]", 839 " netstat -r [-46AnW] [-F fibnum] [-f address_family]\n" 840 " [-M core] [-N system]", 841 " netstat -rs [-s] [-M core] [-N system]", 842 " netstat -g [-46W] [-f address_family] [-M core] [-N system]", 843 " netstat -gs [-46s] [-f address_family] [-M core] [-N system]", 844 " netstat -Q"); 845 exit(1); 846 } 847