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 { .n_name = NULL }, 190 }; 191 192 struct protox { 193 int pr_index; /* index into nlist of cb head */ 194 int pr_sindex; /* index into nlist of stat block */ 195 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 196 void (*pr_cblocks)(u_long, const char *, int, int); 197 /* control blocks printing routine */ 198 void (*pr_stats)(u_long, const char *, int, int); 199 /* statistics printing routine */ 200 void (*pr_istats)(char *); /* per/if statistics printing routine */ 201 const char *pr_name; /* well-known name */ 202 int pr_usesysctl; /* non-zero if we use sysctl, not kvm */ 203 int pr_protocol; 204 } protox[] = { 205 { N_TCBINFO, N_TCPSTAT, 1, protopr, 206 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 207 { N_UDBINFO, N_UDPSTAT, 1, protopr, 208 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 209 #ifdef SCTP 210 { -1, N_SCTPSTAT, 1, sctp_protopr, 211 sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP }, 212 #endif 213 { N_DIVCBINFO, -1, 1, protopr, 214 NULL, NULL, "divert", 1, IPPROTO_DIVERT }, 215 { N_RIPCBINFO, N_IPSTAT, 1, protopr, 216 ip_stats, NULL, "ip", 1, IPPROTO_RAW }, 217 { N_RIPCBINFO, N_ICMPSTAT, 1, protopr, 218 icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP }, 219 { N_RIPCBINFO, N_IGMPSTAT, 1, protopr, 220 igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP }, 221 #ifdef IPSEC 222 { -1, N_IPSECSTAT, 1, NULL, /* keep as compat */ 223 ipsec_stats, NULL, "ipsec", 0, 0}, 224 { -1, N_AHSTAT, 1, NULL, 225 ah_stats, NULL, "ah", 0, 0}, 226 { -1, N_ESPSTAT, 1, NULL, 227 esp_stats, NULL, "esp", 0, 0}, 228 { -1, N_IPCOMPSTAT, 1, NULL, 229 ipcomp_stats, NULL, "ipcomp", 0, 0}, 230 #endif 231 { N_RIPCBINFO, N_PIMSTAT, 1, protopr, 232 pim_stats, NULL, "pim", 1, IPPROTO_PIM }, 233 { -1, N_CARPSTAT, 1, NULL, 234 carp_stats, NULL, "carp", 1, 0 }, 235 { -1, N_PFSYNCSTAT, 1, NULL, 236 pfsync_stats, NULL, "pfsync", 1, 0 }, 237 { -1, N_ARPSTAT, 1, NULL, 238 arp_stats, NULL, "arp", 1, 0 }, 239 { -1, -1, 0, NULL, 240 NULL, NULL, NULL, 0, 0 } 241 }; 242 243 #ifdef INET6 244 struct protox ip6protox[] = { 245 { N_TCBINFO, N_TCPSTAT, 1, protopr, 246 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP }, 247 { N_UDBINFO, N_UDPSTAT, 1, protopr, 248 udp_stats, NULL, "udp", 1, IPPROTO_UDP }, 249 { N_RIPCBINFO, N_IP6STAT, 1, protopr, 250 ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW }, 251 { N_RIPCBINFO, N_ICMP6STAT, 1, protopr, 252 icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 }, 253 #ifdef IPSEC 254 { -1, N_IPSEC6STAT, 1, NULL, 255 ipsec_stats, NULL, "ipsec6", 0, 0 }, 256 #endif 257 #ifdef notyet 258 { -1, N_PIM6STAT, 1, NULL, 259 pim6_stats, NULL, "pim6", 1, 0 }, 260 #endif 261 { -1, N_RIP6STAT, 1, NULL, 262 rip6_stats, NULL, "rip6", 1, 0 }, 263 { -1, -1, 0, NULL, 264 NULL, NULL, NULL, 0, 0 } 265 }; 266 #endif /*INET6*/ 267 268 #ifdef IPSEC 269 struct protox pfkeyprotox[] = { 270 { -1, N_PFKEYSTAT, 1, NULL, 271 pfkey_stats, NULL, "pfkey", 0, 0 }, 272 { -1, -1, 0, NULL, 273 NULL, NULL, NULL, 0, 0 } 274 }; 275 #endif 276 277 struct protox atalkprotox[] = { 278 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, 279 ddp_stats, NULL, "ddp", 0, 0 }, 280 { -1, -1, 0, NULL, 281 NULL, NULL, NULL, 0, 0 } 282 }; 283 #ifdef NETGRAPH 284 struct protox netgraphprotox[] = { 285 { N_NGSOCKS, -1, 1, netgraphprotopr, 286 NULL, NULL, "ctrl", 0, 0 }, 287 { N_NGSOCKS, -1, 1, netgraphprotopr, 288 NULL, NULL, "data", 0, 0 }, 289 { -1, -1, 0, NULL, 290 NULL, NULL, NULL, 0, 0 } 291 }; 292 #endif 293 #ifdef IPX 294 struct protox ipxprotox[] = { 295 { N_IPX, N_IPXSTAT, 1, ipxprotopr, 296 ipx_stats, NULL, "ipx", 0, 0 }, 297 { N_IPX, N_SPXSTAT, 1, ipxprotopr, 298 spx_stats, NULL, "spx", 0, 0 }, 299 { -1, -1, 0, NULL, 300 NULL, NULL, 0, 0, 0 } 301 }; 302 #endif 303 304 struct protox *protoprotox[] = { 305 protox, 306 #ifdef INET6 307 ip6protox, 308 #endif 309 #ifdef IPSEC 310 pfkeyprotox, 311 #endif 312 #ifdef IPX 313 ipxprotox, 314 #endif 315 atalkprotox, NULL }; 316 317 static void printproto(struct protox *, const char *); 318 static void usage(void); 319 static struct protox *name2protox(const char *); 320 static struct protox *knownname(const char *); 321 322 static kvm_t *kvmd; 323 static char *nlistf = NULL, *memf = NULL; 324 325 int Aflag; /* show addresses of protocol control block */ 326 int aflag; /* show all sockets (including servers) */ 327 int Bflag; /* show information about bpf consumers */ 328 int bflag; /* show i/f total bytes in/out */ 329 int dflag; /* show i/f dropped packets */ 330 int gflag; /* show group (multicast) routing or stats */ 331 int hflag; /* show counters in human readable format */ 332 int iflag; /* show interfaces */ 333 int Lflag; /* show size of listen queues */ 334 int mflag; /* show memory stats */ 335 int numeric_addr; /* show addresses numerically */ 336 int numeric_port; /* show ports numerically */ 337 static int pflag; /* show given protocol */ 338 int rflag; /* show routing tables (or routing stats) */ 339 int sflag; /* show protocol statistics */ 340 int tflag; /* show i/f watchdog timers */ 341 int Wflag; /* wide display */ 342 int xflag; /* extra information, includes all socket buffer info */ 343 int zflag; /* zero stats */ 344 345 int interval; /* repeat interval for i/f stats */ 346 347 char *interface; /* desired i/f for stats, or NULL for all i/fs */ 348 int unit; /* unit number for above */ 349 350 int af; /* address family */ 351 int live; /* true if we are examining a live system */ 352 353 int 354 main(int argc, char *argv[]) 355 { 356 struct protox *tp = NULL; /* for printing cblocks & stats */ 357 int ch; 358 359 af = AF_UNSPEC; 360 361 while ((ch = getopt(argc, argv, "AaBbdf:ghI:iLlM:mN:np:rSstuWw:xz")) != -1) 362 switch(ch) { 363 case 'A': 364 Aflag = 1; 365 break; 366 case 'a': 367 aflag = 1; 368 break; 369 case 'B': 370 Bflag = 1; 371 break; 372 case 'b': 373 bflag = 1; 374 break; 375 case 'd': 376 dflag = 1; 377 break; 378 case 'f': 379 if (strcmp(optarg, "ipx") == 0) 380 af = AF_IPX; 381 else if (strcmp(optarg, "inet") == 0) 382 af = AF_INET; 383 #ifdef INET6 384 else if (strcmp(optarg, "inet6") == 0) 385 af = AF_INET6; 386 #endif 387 #ifdef IPSEC 388 else if (strcmp(optarg, "pfkey") == 0) 389 af = PF_KEY; 390 #endif 391 else if (strcmp(optarg, "unix") == 0) 392 af = AF_UNIX; 393 else if (strcmp(optarg, "atalk") == 0) 394 af = AF_APPLETALK; 395 #ifdef NETGRAPH 396 else if (strcmp(optarg, "ng") == 0 397 || strcmp(optarg, "netgraph") == 0) 398 af = AF_NETGRAPH; 399 #endif 400 else if (strcmp(optarg, "link") == 0) 401 af = AF_LINK; 402 else { 403 errx(1, "%s: unknown address family", optarg); 404 } 405 break; 406 case 'g': 407 gflag = 1; 408 break; 409 case 'h': 410 hflag = 1; 411 break; 412 case 'I': { 413 char *cp; 414 415 iflag = 1; 416 for (cp = interface = optarg; isalpha(*cp); cp++) 417 continue; 418 unit = atoi(cp); 419 break; 420 } 421 case 'i': 422 iflag = 1; 423 break; 424 case 'L': 425 Lflag = 1; 426 break; 427 case 'M': 428 memf = optarg; 429 break; 430 case 'm': 431 mflag = 1; 432 break; 433 case 'N': 434 nlistf = optarg; 435 break; 436 case 'n': 437 numeric_addr = numeric_port = 1; 438 break; 439 case 'p': 440 if ((tp = name2protox(optarg)) == NULL) { 441 errx(1, 442 "%s: unknown or uninstrumented protocol", 443 optarg); 444 } 445 pflag = 1; 446 break; 447 case 'r': 448 rflag = 1; 449 break; 450 case 's': 451 ++sflag; 452 break; 453 case 'S': 454 numeric_addr = 1; 455 break; 456 case 't': 457 tflag = 1; 458 break; 459 case 'u': 460 af = AF_UNIX; 461 break; 462 case 'W': 463 case 'l': 464 Wflag = 1; 465 break; 466 case 'w': 467 interval = atoi(optarg); 468 iflag = 1; 469 break; 470 case 'x': 471 xflag = 1; 472 break; 473 case 'z': 474 zflag = 1; 475 break; 476 case '?': 477 default: 478 usage(); 479 } 480 argv += optind; 481 argc -= optind; 482 483 #define BACKWARD_COMPATIBILITY 484 #ifdef BACKWARD_COMPATIBILITY 485 if (*argv) { 486 if (isdigit(**argv)) { 487 interval = atoi(*argv); 488 if (interval <= 0) 489 usage(); 490 ++argv; 491 iflag = 1; 492 } 493 if (*argv) { 494 nlistf = *argv; 495 if (*++argv) 496 memf = *argv; 497 } 498 } 499 #endif 500 501 /* 502 * Discard setgid privileges if not the running kernel so that bad 503 * guys can't print interesting stuff from kernel memory. 504 */ 505 live = (nlistf == NULL && memf == NULL); 506 if (!live) 507 setgid(getgid()); 508 509 if (Bflag) { 510 if (!live) 511 usage(); 512 bpf_stats(interface); 513 exit(0); 514 } 515 if (mflag) { 516 if (!live) { 517 if (kread(0, NULL, 0) == 0) 518 mbpr(kvmd, nl[N_MBSTAT].n_value); 519 } else 520 mbpr(NULL, 0); 521 exit(0); 522 } 523 #if 0 524 /* 525 * Keep file descriptors open to avoid overhead 526 * of open/close on each call to get* routines. 527 */ 528 sethostent(1); 529 setnetent(1); 530 #else 531 /* 532 * This does not make sense any more with DNS being default over 533 * the files. Doing a setXXXXent(1) causes a tcp connection to be 534 * used for the queries, which is slower. 535 */ 536 #endif 537 kread(0, NULL, 0); 538 if (iflag && !sflag) { 539 intpr(interval, nl[N_IFNET].n_value, NULL); 540 exit(0); 541 } 542 if (rflag) { 543 if (sflag) 544 rt_stats(nl[N_RTSTAT].n_value, nl[N_RTTRASH].n_value); 545 else 546 routepr(nl[N_RTREE].n_value); 547 exit(0); 548 } 549 if (gflag) { 550 if (sflag) { 551 if (af == AF_INET || af == AF_UNSPEC) 552 mrt_stats(nl[N_MRTSTAT].n_value); 553 #ifdef INET6 554 if (af == AF_INET6 || af == AF_UNSPEC) 555 mrt6_stats(nl[N_MRT6STAT].n_value); 556 #endif 557 } else { 558 if (af == AF_INET || af == AF_UNSPEC) 559 mroutepr(nl[N_MFCHASHTBL].n_value, 560 nl[N_MFCTABLESIZE].n_value, 561 nl[N_VIFTABLE].n_value); 562 #ifdef INET6 563 if (af == AF_INET6 || af == AF_UNSPEC) 564 mroute6pr(nl[N_MF6CTABLE].n_value, 565 nl[N_MIF6TABLE].n_value); 566 #endif 567 } 568 exit(0); 569 } 570 571 if (tp) { 572 printproto(tp, tp->pr_name); 573 exit(0); 574 } 575 if (af == AF_INET || af == AF_UNSPEC) 576 for (tp = protox; tp->pr_name; tp++) 577 printproto(tp, tp->pr_name); 578 #ifdef INET6 579 if (af == AF_INET6 || af == AF_UNSPEC) 580 for (tp = ip6protox; tp->pr_name; tp++) 581 printproto(tp, tp->pr_name); 582 #endif /*INET6*/ 583 #ifdef IPSEC 584 if (af == PF_KEY || af == AF_UNSPEC) 585 for (tp = pfkeyprotox; tp->pr_name; tp++) 586 printproto(tp, tp->pr_name); 587 #endif /*IPSEC*/ 588 #ifdef IPX 589 if (af == AF_IPX || af == AF_UNSPEC) { 590 for (tp = ipxprotox; tp->pr_name; tp++) 591 printproto(tp, tp->pr_name); 592 } 593 #endif /* IPX */ 594 if (af == AF_APPLETALK || af == AF_UNSPEC) 595 for (tp = atalkprotox; tp->pr_name; tp++) 596 printproto(tp, tp->pr_name); 597 #ifdef NETGRAPH 598 if (af == AF_NETGRAPH || af == AF_UNSPEC) 599 for (tp = netgraphprotox; tp->pr_name; tp++) 600 printproto(tp, tp->pr_name); 601 #endif /* NETGRAPH */ 602 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 603 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value, 604 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value); 605 exit(0); 606 } 607 608 /* 609 * Print out protocol statistics or control blocks (per sflag). 610 * If the interface was not specifically requested, and the symbol 611 * is not in the namelist, ignore this one. 612 */ 613 static void 614 printproto(tp, name) 615 struct protox *tp; 616 const char *name; 617 { 618 void (*pr)(u_long, const char *, int, int); 619 u_long off; 620 621 if (sflag) { 622 if (iflag) { 623 if (tp->pr_istats) 624 intpr(interval, nl[N_IFNET].n_value, 625 tp->pr_istats); 626 else if (pflag) 627 printf("%s: no per-interface stats routine\n", 628 tp->pr_name); 629 return; 630 } else { 631 pr = tp->pr_stats; 632 if (!pr) { 633 if (pflag) 634 printf("%s: no stats routine\n", 635 tp->pr_name); 636 return; 637 } 638 if (tp->pr_usesysctl && live) 639 off = 0; 640 else if (tp->pr_sindex < 0) { 641 if (pflag) 642 printf( 643 "%s: stats routine doesn't work on cores\n", 644 tp->pr_name); 645 return; 646 } else 647 off = nl[tp->pr_sindex].n_value; 648 } 649 } else { 650 pr = tp->pr_cblocks; 651 if (!pr) { 652 if (pflag) 653 printf("%s: no PCB routine\n", tp->pr_name); 654 return; 655 } 656 if (tp->pr_usesysctl && live) 657 off = 0; 658 else if (tp->pr_index < 0) { 659 if (pflag) 660 printf( 661 "%s: PCB routine doesn't work on cores\n", 662 tp->pr_name); 663 return; 664 } else 665 off = nl[tp->pr_index].n_value; 666 } 667 if (pr != NULL && (off || (live && tp->pr_usesysctl) || 668 af != AF_UNSPEC)) 669 (*pr)(off, name, af, tp->pr_protocol); 670 } 671 672 /* 673 * Read kernel memory, return 0 on success. 674 */ 675 int 676 kread(u_long addr, void *buf, size_t size) 677 { 678 char errbuf[_POSIX2_LINE_MAX]; 679 680 if (kvmd == NULL) { 681 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 682 setgid(getgid()); 683 if (kvmd != NULL) { 684 if (kvm_nlist(kvmd, nl) < 0) { 685 if (nlistf) 686 errx(1, "%s: kvm_nlist: %s", nlistf, 687 kvm_geterr(kvmd)); 688 else 689 errx(1, "kvm_nlist: %s", kvm_geterr(kvmd)); 690 } 691 692 if (nl[0].n_type == 0) { 693 if (nlistf) 694 errx(1, "%s: no namelist", nlistf); 695 else 696 errx(1, "no namelist"); 697 } 698 } else { 699 warnx("kvm not available: %s", errbuf); 700 return(-1); 701 } 702 } 703 if (!buf) 704 return (0); 705 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) { 706 warnx("%s", kvm_geterr(kvmd)); 707 return (-1); 708 } 709 return (0); 710 } 711 712 const char * 713 plural(uintmax_t n) 714 { 715 return (n != 1 ? "s" : ""); 716 } 717 718 const char * 719 plurales(uintmax_t n) 720 { 721 return (n != 1 ? "es" : ""); 722 } 723 724 const char * 725 pluralies(uintmax_t n) 726 { 727 return (n != 1 ? "ies" : "y"); 728 } 729 730 /* 731 * Find the protox for the given "well-known" name. 732 */ 733 static struct protox * 734 knownname(const char *name) 735 { 736 struct protox **tpp, *tp; 737 738 for (tpp = protoprotox; *tpp; tpp++) 739 for (tp = *tpp; tp->pr_name; tp++) 740 if (strcmp(tp->pr_name, name) == 0) 741 return (tp); 742 return (NULL); 743 } 744 745 /* 746 * Find the protox corresponding to name. 747 */ 748 static struct protox * 749 name2protox(const char *name) 750 { 751 struct protox *tp; 752 char **alias; /* alias from p->aliases */ 753 struct protoent *p; 754 755 /* 756 * Try to find the name in the list of "well-known" names. If that 757 * fails, check if name is an alias for an Internet protocol. 758 */ 759 if ((tp = knownname(name)) != NULL) 760 return (tp); 761 762 setprotoent(1); /* make protocol lookup cheaper */ 763 while ((p = getprotoent()) != NULL) { 764 /* assert: name not same as p->name */ 765 for (alias = p->p_aliases; *alias; alias++) 766 if (strcmp(name, *alias) == 0) { 767 endprotoent(); 768 return (knownname(p->p_name)); 769 } 770 } 771 endprotoent(); 772 return (NULL); 773 } 774 775 static void 776 usage(void) 777 { 778 (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", 779 "usage: netstat [-AaLnSWx] [-f protocol_family | -p protocol]\n" 780 " [-M core] [-N system]", 781 " netstat -i | -I interface [-abdhntW] [-f address_family]\n" 782 " [-M core] [-N system]", 783 " netstat -w wait [-I interface] [-d] [-M core] [-N system]", 784 " netstat -s [-s] [-z] [-f protocol_family | -p protocol]\n" 785 " [-M core] [-N system]", 786 " netstat -i | -I interface -s [-f protocol_family | -p protocol]\n" 787 " [-M core] [-N system]", 788 " netstat -m [-M core] [-N system]", 789 " netstat -B [-I interface]", 790 " netstat -r [-AanW] [-f address_family] [-M core] [-N system]", 791 " netstat -rs [-s] [-M core] [-N system]", 792 " netstat -g [-W] [-f address_family] [-M core] [-N system]", 793 " netstat -gs [-s] [-f address_family] [-M core] [-N system]"); 794 exit(1); 795 } 796