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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 char const copyright[] = 36 "@(#) Copyright (c) 1983, 1988, 1993\n\ 37 Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #if 0 41 #ifndef lint 42 static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94"; 43 #endif /* not lint */ 44 #endif 45 46 #include <sys/cdefs.h> 47 __FBSDID("$FreeBSD$"); 48 49 #include <sys/param.h> 50 #include <sys/file.h> 51 #include <sys/protosw.h> 52 #include <sys/socket.h> 53 #include <sys/socketvar.h> 54 55 #include <netinet/in.h> 56 57 #ifdef NETGRAPH 58 #include <netgraph/ng_socket.h> 59 #endif 60 61 #include <ctype.h> 62 #include <err.h> 63 #include <errno.h> 64 #include <kvm.h> 65 #include <limits.h> 66 #include <netdb.h> 67 #include <nlist.h> 68 #include <paths.h> 69 #include <stdint.h> 70 #include <stdio.h> 71 #include <stdlib.h> 72 #include <string.h> 73 #include <unistd.h> 74 #include "netstat.h" 75 76 static struct nlist nl[] = { 77 #define N_IFNET 0 78 { .n_name = "_ifnet" }, 79 #define N_RTSTAT 1 80 { .n_name = "_rtstat" }, 81 #define N_RTREE 2 82 { .n_name = "_rt_tables"}, 83 #define N_MRTSTAT 3 84 { .n_name = "_mrtstat" }, 85 #define N_MFCHASHTBL 4 86 { .n_name = "_mfchashtbl" }, 87 #define N_VIFTABLE 5 88 { .n_name = "_viftable" }, 89 #define N_IPX 6 90 { .n_name = "_ipxpcb_list"}, 91 #define N_IPXSTAT 7 92 { .n_name = "_ipxstat"}, 93 #define N_SPXSTAT 8 94 { .n_name = "_spx_istat"}, 95 #define N_DDPSTAT 9 96 { .n_name = "_ddpstat"}, 97 #define N_DDPCB 10 98 { .n_name = "_ddpcb"}, 99 #define N_NGSOCKS 11 100 { .n_name = "_ngsocklist"}, 101 #define N_IP6STAT 12 102 { .n_name = "_ip6stat" }, 103 #define N_ICMP6STAT 13 104 { .n_name = "_icmp6stat" }, 105 #define N_IPSECSTAT 14 106 { .n_name = "_ipsec4stat" }, 107 #define N_IPSEC6STAT 15 108 { .n_name = "_ipsec6stat" }, 109 #define N_PIM6STAT 16 110 { .n_name = "_pim6stat" }, 111 #define N_MRT6STAT 17 112 { .n_name = "_mrt6stat" }, 113 #define N_MF6CTABLE 18 114 { .n_name = "_mf6ctable" }, 115 #define N_MIF6TABLE 19 116 { .n_name = "_mif6table" }, 117 #define N_PFKEYSTAT 20 118 { .n_name = "_pfkeystat" }, 119 #define N_MBSTAT 21 120 { .n_name = "_mbstat" }, 121 #define N_MBTYPES 22 122 { .n_name = "_mbtypes" }, 123 #define N_NMBCLUSTERS 23 124 { .n_name = "_nmbclusters" }, 125 #define N_NMBUFS 24 126 { .n_name = "_nmbufs" }, 127 #define N_MBHI 25 128 { .n_name = "_mbuf_hiwm" }, 129 #define N_CLHI 26 130 { .n_name = "_clust_hiwm" }, 131 #define N_NCPUS 27 132 { .n_name = "_smp_cpus" }, 133 #define N_PAGESZ 28 134 { .n_name = "_pagesize" }, 135 #define N_MBPSTAT 29 136 { .n_name = "_mb_statpcpu" }, 137 #define N_RTTRASH 30 138 { .n_name = "_rttrash" }, 139 #define N_MBLO 31 140 { .n_name = "_mbuf_lowm" }, 141 #define N_CLLO 32 142 { .n_name = "_clust_lowm" }, 143 #define N_CARPSTAT 33 144 { .n_name = "_carpstats" }, 145 #define N_PFSYNCSTAT 34 146 { .n_name = "_pfsyncstats" }, 147 #define N_AHSTAT 35 148 { .n_name = "_ahstat" }, 149 #define N_ESPSTAT 36 150 { .n_name = "_espstat" }, 151 #define N_IPCOMPSTAT 37 152 { .n_name = "_ipcompstat" }, 153 #define N_TCPSTAT 38 154 { .n_name = "_tcpstat" }, 155 #define N_UDPSTAT 39 156 { .n_name = "_udpstat" }, 157 #define N_IPSTAT 40 158 { .n_name = "_ipstat" }, 159 #define N_ICMPSTAT 41 160 { .n_name = "_icmpstat" }, 161 #define N_IGMPSTAT 42 162 { .n_name = "_igmpstat" }, 163 #define N_PIMSTAT 43 164 { .n_name = "_pimstat" }, 165 #define N_TCBINFO 44 166 { .n_name = "_tcbinfo" }, 167 #define N_UDBINFO 45 168 { .n_name = "_udbinfo" }, 169 #define N_DIVCBINFO 46 170 { .n_name = "_divcbinfo" }, 171 #define N_RIPCBINFO 47 172 { .n_name = "_ripcbinfo" }, 173 #define N_UNP_COUNT 48 174 { .n_name = "_unp_count" }, 175 #define N_UNP_GENCNT 49 176 { .n_name = "_unp_gencnt" }, 177 #define N_UNP_DHEAD 50 178 { .n_name = "_unp_dhead" }, 179 #define N_UNP_SHEAD 51 180 { .n_name = "_unp_shead" }, 181 #define N_RIP6STAT 52 182 { .n_name = "_rip6stat" }, 183 #define N_SCTPSTAT 53 184 { .n_name = "_sctpstat" }, 185 #define N_MFCTABLESIZE 54 186 { .n_name = "_mfctablesize" }, 187 #define N_ARPSTAT 55 188 { .n_name = "_arpstat" }, 189 #define N_UNP_SPHEAD 56 190 { .n_name = "unp_sphead" }, 191 { .n_name = NULL }, 192 }; 193 194 struct protox { 195 int pr_index; /* index into nlist of cb head */ 196 int pr_sindex; /* index into nlist of stat block */ 197 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 198 void (*pr_cblocks)(u_long, const char *, int, int); 199 /* control blocks printing routine */ 200 void (*pr_stats)(u_long, const char *, int, int); 201 /* statistics printing routine */ 202 void (*pr_istats)(char *); /* per/if statistics printing routine */ 203 const char *pr_name; /* well-known name */ 204 int pr_usesysctl; /* non-zero if we use sysctl, not kvm */ 205 int pr_protocol; 206 } protox[] = { 207 { N_TCBINFO, N_TCPSTAT, 1, protopr, 208 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 209 { N_UDBINFO, N_UDPSTAT, 1, protopr, 210 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 211 #ifdef SCTP 212 { -1, N_SCTPSTAT, 1, sctp_protopr, 213 sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP }, 214 #endif 215 { N_DIVCBINFO, -1, 1, protopr, 216 NULL, NULL, "divert", 1, IPPROTO_DIVERT }, 217 { N_RIPCBINFO, N_IPSTAT, 1, protopr, 218 ip_stats, NULL, "ip", 1, IPPROTO_RAW }, 219 { N_RIPCBINFO, N_ICMPSTAT, 1, protopr, 220 icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP }, 221 { N_RIPCBINFO, N_IGMPSTAT, 1, protopr, 222 igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP }, 223 #ifdef IPSEC 224 { -1, N_IPSECSTAT, 1, NULL, /* keep as compat */ 225 ipsec_stats, NULL, "ipsec", 0, 0}, 226 { -1, N_AHSTAT, 1, NULL, 227 ah_stats, NULL, "ah", 0, 0}, 228 { -1, N_ESPSTAT, 1, NULL, 229 esp_stats, NULL, "esp", 0, 0}, 230 { -1, N_IPCOMPSTAT, 1, NULL, 231 ipcomp_stats, NULL, "ipcomp", 0, 0}, 232 #endif 233 { N_RIPCBINFO, N_PIMSTAT, 1, protopr, 234 pim_stats, NULL, "pim", 1, IPPROTO_PIM }, 235 { -1, N_CARPSTAT, 1, NULL, 236 carp_stats, NULL, "carp", 1, 0 }, 237 { -1, N_PFSYNCSTAT, 1, NULL, 238 pfsync_stats, NULL, "pfsync", 1, 0 }, 239 { -1, N_ARPSTAT, 1, NULL, 240 arp_stats, NULL, "arp", 1, 0 }, 241 { -1, -1, 0, NULL, 242 NULL, NULL, NULL, 0, 0 } 243 }; 244 245 #ifdef INET6 246 struct protox ip6protox[] = { 247 { N_TCBINFO, N_TCPSTAT, 1, protopr, 248 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 249 { N_UDBINFO, N_UDPSTAT, 1, protopr, 250 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 251 { N_RIPCBINFO, N_IP6STAT, 1, protopr, 252 ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW }, 253 { N_RIPCBINFO, N_ICMP6STAT, 1, protopr, 254 icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 }, 255 #ifdef IPSEC 256 { -1, N_IPSEC6STAT, 1, NULL, 257 ipsec_stats, NULL, "ipsec6", 0, 0 }, 258 #endif 259 #ifdef notyet 260 { -1, N_PIM6STAT, 1, NULL, 261 pim6_stats, NULL, "pim6", 1, 0 }, 262 #endif 263 { -1, N_RIP6STAT, 1, NULL, 264 rip6_stats, NULL, "rip6", 1, 0 }, 265 { -1, -1, 0, NULL, 266 NULL, NULL, NULL, 0, 0 } 267 }; 268 #endif /*INET6*/ 269 270 #ifdef IPSEC 271 struct protox pfkeyprotox[] = { 272 { -1, N_PFKEYSTAT, 1, NULL, 273 pfkey_stats, NULL, "pfkey", 0, 0 }, 274 { -1, -1, 0, NULL, 275 NULL, NULL, NULL, 0, 0 } 276 }; 277 #endif 278 279 struct protox atalkprotox[] = { 280 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, 281 ddp_stats, NULL, "ddp", 0, 0 }, 282 { -1, -1, 0, NULL, 283 NULL, NULL, NULL, 0, 0 } 284 }; 285 #ifdef NETGRAPH 286 struct protox netgraphprotox[] = { 287 { N_NGSOCKS, -1, 1, netgraphprotopr, 288 NULL, NULL, "ctrl", 0, 0 }, 289 { N_NGSOCKS, -1, 1, netgraphprotopr, 290 NULL, NULL, "data", 0, 0 }, 291 { -1, -1, 0, NULL, 292 NULL, NULL, NULL, 0, 0 } 293 }; 294 #endif 295 #ifdef IPX 296 struct protox ipxprotox[] = { 297 { N_IPX, N_IPXSTAT, 1, ipxprotopr, 298 ipx_stats, NULL, "ipx", 0, 0 }, 299 { N_IPX, N_SPXSTAT, 1, ipxprotopr, 300 spx_stats, NULL, "spx", 0, 0 }, 301 { -1, -1, 0, NULL, 302 NULL, NULL, 0, 0, 0 } 303 }; 304 #endif 305 306 struct protox *protoprotox[] = { 307 protox, 308 #ifdef INET6 309 ip6protox, 310 #endif 311 #ifdef IPSEC 312 pfkeyprotox, 313 #endif 314 #ifdef IPX 315 ipxprotox, 316 #endif 317 atalkprotox, NULL }; 318 319 static void printproto(struct protox *, const char *); 320 static void usage(void); 321 static struct protox *name2protox(const char *); 322 static struct protox *knownname(const char *); 323 324 static kvm_t *kvmd; 325 static char *nlistf = NULL, *memf = NULL; 326 327 int Aflag; /* show addresses of protocol control block */ 328 int aflag; /* show all sockets (including servers) */ 329 int Bflag; /* show information about bpf consumers */ 330 int bflag; /* show i/f total bytes in/out */ 331 int dflag; /* show i/f dropped packets */ 332 int gflag; /* show group (multicast) routing or stats */ 333 int hflag; /* show counters in human readable format */ 334 int iflag; /* show interfaces */ 335 int Lflag; /* show size of listen queues */ 336 int mflag; /* show memory stats */ 337 int numeric_addr; /* show addresses numerically */ 338 int numeric_port; /* show ports numerically */ 339 static int pflag; /* show given protocol */ 340 int rflag; /* show routing tables (or routing stats) */ 341 int sflag; /* show protocol statistics */ 342 int tflag; /* show i/f watchdog timers */ 343 int Wflag; /* wide display */ 344 int xflag; /* extra information, includes all socket buffer info */ 345 int zflag; /* zero stats */ 346 347 int interval; /* repeat interval for i/f stats */ 348 349 char *interface; /* desired i/f for stats, or NULL for all i/fs */ 350 int unit; /* unit number for above */ 351 352 int af; /* address family */ 353 int live; /* true if we are examining a live system */ 354 355 int 356 main(int argc, char *argv[]) 357 { 358 struct protox *tp = NULL; /* for printing cblocks & stats */ 359 int ch; 360 361 af = AF_UNSPEC; 362 363 while ((ch = getopt(argc, argv, "AaBbdf:ghI:iLlM:mN:np:rSstuWw:xz")) != -1) 364 switch(ch) { 365 case 'A': 366 Aflag = 1; 367 break; 368 case 'a': 369 aflag = 1; 370 break; 371 case 'B': 372 Bflag = 1; 373 break; 374 case 'b': 375 bflag = 1; 376 break; 377 case 'd': 378 dflag = 1; 379 break; 380 case 'f': 381 if (strcmp(optarg, "ipx") == 0) 382 af = AF_IPX; 383 else if (strcmp(optarg, "inet") == 0) 384 af = AF_INET; 385 #ifdef INET6 386 else if (strcmp(optarg, "inet6") == 0) 387 af = AF_INET6; 388 #endif 389 #ifdef IPSEC 390 else if (strcmp(optarg, "pfkey") == 0) 391 af = PF_KEY; 392 #endif 393 else if (strcmp(optarg, "unix") == 0) 394 af = AF_UNIX; 395 else if (strcmp(optarg, "atalk") == 0) 396 af = AF_APPLETALK; 397 #ifdef NETGRAPH 398 else if (strcmp(optarg, "ng") == 0 399 || strcmp(optarg, "netgraph") == 0) 400 af = AF_NETGRAPH; 401 #endif 402 else if (strcmp(optarg, "link") == 0) 403 af = AF_LINK; 404 else { 405 errx(1, "%s: unknown address family", optarg); 406 } 407 break; 408 case 'g': 409 gflag = 1; 410 break; 411 case 'h': 412 hflag = 1; 413 break; 414 case 'I': { 415 char *cp; 416 417 iflag = 1; 418 for (cp = interface = optarg; isalpha(*cp); cp++) 419 continue; 420 unit = atoi(cp); 421 break; 422 } 423 case 'i': 424 iflag = 1; 425 break; 426 case 'L': 427 Lflag = 1; 428 break; 429 case 'M': 430 memf = optarg; 431 break; 432 case 'm': 433 mflag = 1; 434 break; 435 case 'N': 436 nlistf = optarg; 437 break; 438 case 'n': 439 numeric_addr = numeric_port = 1; 440 break; 441 case 'p': 442 if ((tp = name2protox(optarg)) == NULL) { 443 errx(1, 444 "%s: unknown or uninstrumented protocol", 445 optarg); 446 } 447 pflag = 1; 448 break; 449 case 'r': 450 rflag = 1; 451 break; 452 case 's': 453 ++sflag; 454 break; 455 case 'S': 456 numeric_addr = 1; 457 break; 458 case 't': 459 tflag = 1; 460 break; 461 case 'u': 462 af = AF_UNIX; 463 break; 464 case 'W': 465 case 'l': 466 Wflag = 1; 467 break; 468 case 'w': 469 interval = atoi(optarg); 470 iflag = 1; 471 break; 472 case 'x': 473 xflag = 1; 474 break; 475 case 'z': 476 zflag = 1; 477 break; 478 case '?': 479 default: 480 usage(); 481 } 482 argv += optind; 483 argc -= optind; 484 485 #define BACKWARD_COMPATIBILITY 486 #ifdef BACKWARD_COMPATIBILITY 487 if (*argv) { 488 if (isdigit(**argv)) { 489 interval = atoi(*argv); 490 if (interval <= 0) 491 usage(); 492 ++argv; 493 iflag = 1; 494 } 495 if (*argv) { 496 nlistf = *argv; 497 if (*++argv) 498 memf = *argv; 499 } 500 } 501 #endif 502 503 /* 504 * Discard setgid privileges if not the running kernel so that bad 505 * guys can't print interesting stuff from kernel memory. 506 */ 507 live = (nlistf == NULL && memf == NULL); 508 if (!live) 509 setgid(getgid()); 510 511 if (Bflag) { 512 if (!live) 513 usage(); 514 bpf_stats(interface); 515 exit(0); 516 } 517 if (mflag) { 518 if (!live) { 519 if (kread(0, NULL, 0) == 0) 520 mbpr(kvmd, nl[N_MBSTAT].n_value); 521 } else 522 mbpr(NULL, 0); 523 exit(0); 524 } 525 #if 0 526 /* 527 * Keep file descriptors open to avoid overhead 528 * of open/close on each call to get* routines. 529 */ 530 sethostent(1); 531 setnetent(1); 532 #else 533 /* 534 * This does not make sense any more with DNS being default over 535 * the files. Doing a setXXXXent(1) causes a tcp connection to be 536 * used for the queries, which is slower. 537 */ 538 #endif 539 kread(0, NULL, 0); 540 if (iflag && !sflag) { 541 intpr(interval, nl[N_IFNET].n_value, NULL); 542 exit(0); 543 } 544 if (rflag) { 545 if (sflag) 546 rt_stats(nl[N_RTSTAT].n_value, nl[N_RTTRASH].n_value); 547 else 548 routepr(nl[N_RTREE].n_value); 549 exit(0); 550 } 551 if (gflag) { 552 if (sflag) { 553 if (af == AF_INET || af == AF_UNSPEC) 554 mrt_stats(nl[N_MRTSTAT].n_value); 555 #ifdef INET6 556 if (af == AF_INET6 || af == AF_UNSPEC) 557 mrt6_stats(nl[N_MRT6STAT].n_value); 558 #endif 559 } else { 560 if (af == AF_INET || af == AF_UNSPEC) 561 mroutepr(nl[N_MFCHASHTBL].n_value, 562 nl[N_MFCTABLESIZE].n_value, 563 nl[N_VIFTABLE].n_value); 564 #ifdef INET6 565 if (af == AF_INET6 || af == AF_UNSPEC) 566 mroute6pr(nl[N_MF6CTABLE].n_value, 567 nl[N_MIF6TABLE].n_value); 568 #endif 569 } 570 exit(0); 571 } 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 IPX 591 if (af == AF_IPX || af == AF_UNSPEC) { 592 for (tp = ipxprotox; tp->pr_name; tp++) 593 printproto(tp, tp->pr_name); 594 } 595 #endif /* IPX */ 596 if (af == AF_APPLETALK || af == AF_UNSPEC) 597 for (tp = atalkprotox; tp->pr_name; tp++) 598 printproto(tp, tp->pr_name); 599 #ifdef NETGRAPH 600 if (af == AF_NETGRAPH || af == AF_UNSPEC) 601 for (tp = netgraphprotox; tp->pr_name; tp++) 602 printproto(tp, tp->pr_name); 603 #endif /* NETGRAPH */ 604 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 605 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, 606 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value, 607 nl[N_UNP_SPHEAD].n_value); 608 exit(0); 609 } 610 611 /* 612 * Print out protocol statistics or control blocks (per sflag). 613 * If the interface was not specifically requested, and the symbol 614 * is not in the namelist, ignore this one. 615 */ 616 static void 617 printproto(tp, name) 618 struct protox *tp; 619 const char *name; 620 { 621 void (*pr)(u_long, const char *, int, int); 622 u_long off; 623 624 if (sflag) { 625 if (iflag) { 626 if (tp->pr_istats) 627 intpr(interval, nl[N_IFNET].n_value, 628 tp->pr_istats); 629 else if (pflag) 630 printf("%s: no per-interface stats routine\n", 631 tp->pr_name); 632 return; 633 } else { 634 pr = tp->pr_stats; 635 if (!pr) { 636 if (pflag) 637 printf("%s: no stats routine\n", 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 printf( 646 "%s: stats routine doesn't work on cores\n", 647 tp->pr_name); 648 return; 649 } else 650 off = nl[tp->pr_sindex].n_value; 651 } 652 } else { 653 pr = tp->pr_cblocks; 654 if (!pr) { 655 if (pflag) 656 printf("%s: no PCB routine\n", 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 printf( 664 "%s: PCB routine doesn't work on cores\n", 665 tp->pr_name); 666 return; 667 } else 668 off = nl[tp->pr_index].n_value; 669 } 670 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 671 af != AF_UNSPEC)) 672 (*pr)(off, name, af, tp->pr_protocol); 673 } 674 675 /* 676 * Read kernel memory, return 0 on success. 677 */ 678 int 679 kread(u_long addr, void *buf, size_t size) 680 { 681 char errbuf[_POSIX2_LINE_MAX]; 682 683 if (kvmd == NULL) { 684 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 685 setgid(getgid()); 686 if (kvmd != NULL) { 687 if (kvm_nlist(kvmd, nl) < 0) { 688 if (nlistf) 689 errx(1, "%s: kvm_nlist: %s", nlistf, 690 kvm_geterr(kvmd)); 691 else 692 errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 693 } 694 695 if (nl[0].n_type == 0) { 696 if (nlistf) 697 errx(1, "%s: no namelist", nlistf); 698 else 699 errx(1, "no namelist"); 700 } 701 } else { 702 warnx("kvm not available: %s", errbuf); 703 return(-1); 704 } 705 } 706 if (!buf) 707 return (0); 708 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 709 warnx("%s", kvm_geterr(kvmd)); 710 return (-1); 711 } 712 return (0); 713 } 714 715 const char * 716 plural(uintmax_t n) 717 { 718 return (n != 1 ? "s" : ""); 719 } 720 721 const char * 722 plurales(uintmax_t n) 723 { 724 return (n != 1 ? "es" : ""); 725 } 726 727 const char * 728 pluralies(uintmax_t n) 729 { 730 return (n != 1 ? "ies" : "y"); 731 } 732 733 /* 734 * Find the protox for the given "well-known" name. 735 */ 736 static struct protox * 737 knownname(const char *name) 738 { 739 struct protox **tpp, *tp; 740 741 for (tpp = protoprotox; *tpp; tpp++) 742 for (tp = *tpp; tp->pr_name; tp++) 743 if (strcmp(tp->pr_name, name) == 0) 744 return (tp); 745 return (NULL); 746 } 747 748 /* 749 * Find the protox corresponding to name. 750 */ 751 static struct protox * 752 name2protox(const char *name) 753 { 754 struct protox *tp; 755 char **alias; /* alias from p->aliases */ 756 struct protoent *p; 757 758 /* 759 * Try to find the name in the list of "well-known" names. If that 760 * fails, check if name is an alias for an Internet protocol. 761 */ 762 if ((tp = knownname(name)) != NULL) 763 return (tp); 764 765 setprotoent(1); /* make protocol lookup cheaper */ 766 while ((p = getprotoent()) != NULL) { 767 /* assert: name not same as p->name */ 768 for (alias = p->p_aliases; *alias; alias++) 769 if (strcmp(name, *alias) == 0) { 770 endprotoent(); 771 return (knownname(p->p_name)); 772 } 773 } 774 endprotoent(); 775 return (NULL); 776 } 777 778 static void 779 usage(void) 780 { 781 (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", 782 "usage: netstat [-AaLnSWx] [-f protocol_family | -p protocol]\n" 783 " [-M core] [-N system]", 784 " netstat -i | -I interface [-abdhntW] [-f address_family]\n" 785 " [-M core] [-N system]", 786 " netstat -w wait [-I interface] [-d] [-M core] [-N system]", 787 " netstat -s [-s] [-z] [-f protocol_family | -p protocol]\n" 788 " [-M core] [-N system]", 789 " netstat -i | -I interface -s [-f protocol_family | -p protocol]\n" 790 " [-M core] [-N system]", 791 " netstat -m [-M core] [-N system]", 792 " netstat -B [-I interface]", 793 " netstat -r [-AanW] [-f address_family] [-M core] [-N system]", 794 " netstat -rs [-s] [-M core] [-N system]", 795 " netstat -g [-W] [-f address_family] [-M core] [-N system]", 796 " netstat -gs [-s] [-f address_family] [-M core] [-N system]"); 797 exit(1); 798 } 799