main.c revision 1.99
1 /* $NetBSD: main.c,v 1.99 2016/07/14 20:13:10 christos Exp $ */ 2 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 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1983, 1988, 1993\ 35 Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "from: @(#)main.c 8.4 (Berkeley) 3/1/94"; 41 #else 42 __RCSID("$NetBSD: main.c,v 1.99 2016/07/14 20:13:10 christos Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/file.h> 48 #include <sys/protosw.h> 49 #include <sys/socket.h> 50 51 #include <net/if.h> 52 #include <netinet/in.h> 53 54 #include <ctype.h> 55 #include <err.h> 56 #include <errno.h> 57 #include <kvm.h> 58 #include <limits.h> 59 #include <netdb.h> 60 #include <nlist.h> 61 #include <paths.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <unistd.h> 66 #include "netstat.h" 67 #include "rtutil.h" 68 #include "prog_ops.h" 69 70 struct nlist nl[] = { 71 #define N_MBSTAT 0 72 { "_mbstat", 0, 0, 0, 0 }, 73 #define N_IPSTAT 1 74 { "_ipstat", 0, 0, 0, 0 }, /* not available via kvm */ 75 #define N_TCBTABLE 2 76 { "_tcbtable", 0, 0, 0, 0 }, 77 #define N_TCPSTAT 3 78 { "_tcpstat", 0, 0, 0, 0 }, /* not available via kvm */ 79 #define N_UDBTABLE 4 80 { "_udbtable", 0, 0, 0, 0 }, 81 #define N_UDPSTAT 5 82 { "_udpstat", 0, 0, 0, 0 }, /* not available via kvm */ 83 #define N_IFNET_LIST 6 84 { "_ifnet_list", 0, 0, 0, 0 }, 85 #define N_ICMPSTAT 7 86 { "_icmpstat", 0, 0, 0, 0 }, /* not available via kvm */ 87 #define N_RTSTAT 8 88 { "_rtstat", 0, 0, 0, 0 }, 89 #define N_UNIXSW 9 90 { "_unixsw", 0, 0, 0, 0 }, 91 #define N_RTREE 10 92 { "_rt_tables", 0, 0, 0, 0 }, 93 #define N_NFILE 11 94 { "_nfile", 0, 0, 0, 0 }, 95 #define N_IGMPSTAT 12 96 { "_igmpstat", 0, 0, 0, 0 }, /* not available via kvm */ 97 #define N_MRTPROTO 13 98 { "_ip_mrtproto", 0, 0, 0, 0 }, 99 #define N_MRTSTAT 14 100 { "_mrtstat", 0, 0, 0, 0 }, 101 #define N_MFCHASHTBL 15 102 { "_mfchashtbl", 0, 0, 0, 0 }, 103 #define N_MFCHASH 16 104 { "_mfchash", 0, 0, 0, 0 }, 105 #define N_VIFTABLE 17 106 { "_viftable", 0, 0, 0, 0 }, 107 #define N_MSIZE 18 108 { "_msize", 0, 0, 0, 0 }, 109 #define N_MCLBYTES 19 110 { "_mclbytes", 0, 0, 0, 0 }, 111 #define N_DDPSTAT 20 112 { "_ddpstat", 0, 0, 0, 0 }, /* not available via kvm */ 113 #define N_DDPCB 21 114 { "_ddpcb", 0, 0, 0, 0 }, 115 #define N_MBPOOL 22 116 { "_mbpool", 0, 0, 0, 0 }, 117 #define N_MCLPOOL 23 118 { "_mclpool", 0, 0, 0, 0 }, 119 #define N_IP6STAT 24 120 { "_ip6stat", 0, 0, 0, 0 }, /* not available via kvm */ 121 #define N_TCP6STAT 25 122 { "_tcp6stat", 0, 0, 0, 0 }, /* not available via kvm */ 123 #define N_UDP6STAT 26 124 { "_udp6stat", 0, 0, 0, 0 }, /* not available via kvm */ 125 #define N_ICMP6STAT 27 126 { "_icmp6stat", 0, 0, 0, 0 }, /* not available via kvm */ 127 #define N_IPSECSTAT 28 128 { "_ipsecstat", 0, 0, 0, 0 }, /* not available via kvm */ 129 #define N_IPSEC6STAT 29 130 { "_ipsec6stat", 0, 0, 0, 0 }, /* not available via kvm */ 131 #define N_PIM6STAT 30 132 { "_pim6stat", 0, 0, 0, 0 }, /* not available via kvm */ 133 #define N_MRT6PROTO 31 134 { "_ip6_mrtproto", 0, 0, 0, 0 }, 135 #define N_MRT6STAT 32 136 { "_mrt6stat", 0, 0, 0, 0 }, 137 #define N_MF6CTABLE 33 138 { "_mf6ctable", 0, 0, 0, 0 }, 139 #define N_MIF6TABLE 34 140 { "_mif6table", 0, 0, 0, 0 }, 141 #define N_PFKEYSTAT 35 142 { "_pfkeystat", 0, 0, 0, 0 }, /* not available via kvm */ 143 #define N_ARPSTAT 36 144 { "_arpstat", 0, 0, 0, 0 }, /* not available via kvm */ 145 #define N_RIP6STAT 37 146 { "_rip6stat", 0, 0, 0, 0 }, /* not available via kvm */ 147 #define N_ARPINTRQ 38 148 { "_arpintrq", 0, 0, 0, 0 }, 149 #define N_ATINTRQ1 39 150 { "_atintrq1", 0, 0, 0, 0 }, 151 #define N_ATINTRQ2 40 152 { "_atintrq2", 0, 0, 0, 0 }, 153 #define N_NATMINTRQ 41 154 { "_natmintrq", 0, 0, 0, 0 }, 155 #define N_PPPOEDISCINQ 42 156 { "_ppoediscinq", 0, 0, 0, 0 }, 157 #define N_PPPOEINQ 43 158 { "_ppoeinq", 0, 0, 0, 0 }, 159 #define N_HARDCLOCK_TICKS 44 160 { "_hardclock_ticks", 0, 0, 0, 0 }, 161 #define N_PIMSTAT 45 162 { "_pimstat", 0, 0, 0, 0 }, 163 #define N_CARPSTAT 46 164 { "_carpstats", 0, 0, 0, 0 }, /* not available via kvm */ 165 #define N_PFSYNCSTAT 47 166 { "_pfsyncstats", 0, 0, 0, 0}, /* not available via kvm */ 167 { "", 0, 0, 0, 0 }, 168 }; 169 170 struct protox { 171 u_char pr_index; /* index into nlist of cb head */ 172 u_char pr_sindex; /* index into nlist of stat block */ 173 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 174 void (*pr_cblocks) /* control blocks printing routine */ 175 (u_long, const char *); 176 void (*pr_stats) /* statistics printing routine */ 177 (u_long, const char *); 178 void (*pr_istats) 179 (const char *); /* per/if statistics printing routine */ 180 void (*pr_dump) /* PCB state dump routine */ 181 (u_long, const char *, u_long); 182 const char *pr_name; /* well-known name */ 183 } protox[] = { 184 { N_TCBTABLE, N_TCPSTAT, 1, protopr, 185 tcp_stats, NULL, tcp_dump, "tcp" }, 186 { N_UDBTABLE, N_UDPSTAT, 1, protopr, 187 udp_stats, NULL, 0, "udp" }, 188 { -1, N_IPSTAT, 1, 0, 189 ip_stats, NULL, 0, "ip" }, 190 { -1, N_ICMPSTAT, 1, 0, 191 icmp_stats, NULL, 0, "icmp" }, 192 { -1, N_IGMPSTAT, 1, 0, 193 igmp_stats, NULL, 0, "igmp" }, 194 { -1, N_CARPSTAT, 1, 0, 195 carp_stats, NULL, 0, "carp" }, 196 #ifdef IPSEC 197 { -1, N_IPSECSTAT, 1, 0, 198 fast_ipsec_stats, NULL, 0, "ipsec" }, 199 #endif 200 { -1, N_PIMSTAT, 1, 0, 201 pim_stats, NULL, 0, "pim" }, 202 { -1, N_PFSYNCSTAT, 1, 0, 203 pfsync_stats, NULL, 0, "pfsync" }, 204 { -1, -1, 0, 0, 205 0, NULL, 0, 0 } 206 }; 207 208 #ifdef INET6 209 struct protox ip6protox[] = { 210 { -1, N_IP6STAT, 1, 0, 211 ip6_stats, ip6_ifstats, 0, "ip6" }, 212 { -1, N_ICMP6STAT, 1, 0, 213 icmp6_stats, icmp6_ifstats, 0, "icmp6" }, 214 #ifdef TCP6 215 { N_TCBTABLE, N_TCP6STAT, 1, ip6protopr, 216 tcp6_stats, NULL, tcp6_dump, "tcp6" }, 217 #else 218 { N_TCBTABLE, N_TCP6STAT, 1, ip6protopr, 219 tcp_stats, NULL, tcp6_dump, "tcp6" }, 220 #endif 221 { N_UDBTABLE, N_UDP6STAT, 1, ip6protopr, 222 udp6_stats, NULL, 0, "udp6" }, 223 #ifdef IPSEC 224 { -1, N_IPSEC6STAT, 1, 0, 225 fast_ipsec_stats, NULL, 0, "ipsec6" }, 226 #endif 227 { -1, N_PIM6STAT, 1, 0, 228 pim6_stats, NULL, 0, "pim6" }, 229 { -1, N_RIP6STAT, 1, 0, 230 rip6_stats, NULL, 0, "rip6" }, 231 { -1, -1, 0, 0, 232 0, NULL, 0, 0 } 233 }; 234 #endif 235 236 struct protox arpprotox[] = { 237 { -1, N_ARPSTAT, 1, 0, 238 arp_stats, NULL, 0, "arp" }, 239 { -1, -1, 0, 0, 240 0, NULL, 0, 0 } 241 }; 242 243 #ifdef IPSEC 244 struct protox pfkeyprotox[] = { 245 { -1, N_PFKEYSTAT, 1, 0, 246 pfkey_stats, NULL, 0, "pfkey" }, 247 { -1, -1, 0, 0, 248 0, NULL, 0, 0 } 249 }; 250 #endif 251 252 #ifndef SMALL 253 struct protox atalkprotox[] = { 254 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, 255 ddp_stats, NULL, 0, "ddp" }, 256 { -1, -1, 0, 0, 257 0, NULL, 0, NULL } 258 }; 259 #endif 260 261 struct protox *protoprotox[] = { protox, 262 #ifdef INET6 263 ip6protox, 264 #endif 265 arpprotox, 266 #ifdef IPSEC 267 pfkeyprotox, 268 #endif 269 #ifndef SMALL 270 atalkprotox, 271 #endif 272 NULL }; 273 274 const struct softintrq { 275 const char *siq_name; 276 int siq_index; 277 } softintrq[] = { 278 { "arpintrq", N_ARPINTRQ }, 279 { "atintrq1", N_ATINTRQ1 }, 280 { "atintrq2", N_ATINTRQ2 }, 281 { "natmintrq", N_NATMINTRQ }, 282 { "ppoediscinq", N_PPPOEDISCINQ }, 283 { "ppoeinq", N_PPPOEINQ }, 284 { NULL, -1 }, 285 }; 286 287 static void printproto(struct protox *, const char *); 288 static void print_softintrq(void); 289 __dead static void usage(void); 290 static struct protox *name2protox(const char *); 291 static struct protox *knownname(const char *); 292 static void prepare(const char *, const char *, struct protox *tp); 293 static kvm_t *prepare_kvmd(const char *, const char *, char *); 294 295 static kvm_t *kvmd = NULL; 296 gid_t egid; 297 int interval; /* repeat interval for i/f stats */ 298 static const char *nlistf = NULL, *memf = NULL; 299 300 kvm_t * 301 get_kvmd(void) 302 { 303 char buf[_POSIX2_LINE_MAX]; 304 305 if (kvmd != NULL) 306 return kvmd; 307 if ((kvmd = prepare_kvmd(nlistf, memf, buf)) == NULL) 308 errx(1, "kvm error: %s", buf); 309 return kvmd; 310 } 311 312 static kvm_t * 313 prepare_kvmd(const char *nf, const char *mf, char *errbuf) 314 { 315 kvm_t *k; 316 317 (void)setegid(egid); 318 k = kvm_openfiles(nf, mf, NULL, O_RDONLY, errbuf); 319 (void)setgid(getgid()); 320 return k; 321 } 322 323 void 324 prepare(const char *nf, const char *mf, struct protox *tp) 325 { 326 char buf[_POSIX2_LINE_MAX]; 327 /* 328 * Try to figure out if we can use sysctl or not. 329 */ 330 if (nf != NULL || mf != NULL) { 331 /* Of course, we can't use sysctl with dumps. */ 332 if (force_sysctl) 333 errx(EXIT_FAILURE, "can't use sysctl with dumps"); 334 335 /* 336 * If we have -M or -N, we're not dealing with live memory 337 * or want to use kvm interface explicitly. It is sometimes 338 * useful to dig inside of kernel without extending 339 * sysctl interface (i.e., without rebuilding kernel). 340 */ 341 use_sysctl = 0; 342 } else if (qflag || 343 #ifndef SMALL 344 gflag || 345 #endif 346 (pflag && tp->pr_sindex == N_PIMSTAT) || 347 Pflag) { 348 /* These flags are not yet supported via sysctl(3). */ 349 use_sysctl = 0; 350 } else { 351 /* We can use sysctl(3). */ 352 use_sysctl = 1; 353 } 354 355 if (force_sysctl && !use_sysctl) { 356 /* Let the user know what's about to happen. */ 357 warnx("forcing sysctl usage even though it might not be "\ 358 "supported"); 359 use_sysctl = 1; 360 } 361 362 kvmd = prepare_kvmd(nf, mf, buf); 363 364 if (!use_sysctl) { 365 366 if (kvmd == NULL) 367 errx(1, "kvm error: %s", buf); 368 if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) { 369 if (nf) 370 errx(1, "%s: no namelist", nf); 371 else 372 errx(1, "no namelist"); 373 } 374 } else 375 (void)setgid(getgid()); 376 } 377 378 int 379 main(int argc, char *argv[]) 380 { 381 struct protoent *p; 382 struct protox *tp; /* for printing cblocks & stats */ 383 int ch; 384 char *cp; 385 char *afname, *afnames; 386 u_long pcbaddr; 387 388 if (prog_init) { 389 if (prog_init() == -1) 390 err(1, "init failed"); 391 force_sysctl = 1; /* cheap trick */ 392 } 393 394 egid = getegid(); 395 (void)setegid(getgid()); 396 tp = NULL; 397 af = AF_UNSPEC; 398 afnames = NULL; 399 pcbaddr = 0; 400 401 while ((ch = getopt(argc, argv, 402 "AabBdf:ghI:LliM:mN:nP:p:qrsStTuVvw:X")) != -1) 403 switch (ch) { 404 case 'A': 405 Aflag = RT_AFLAG; 406 break; 407 case 'a': 408 aflag = 1; 409 break; 410 case 'b': 411 bflag = 1; 412 break; 413 case 'B': 414 Bflag = 1; 415 break; 416 case 'd': 417 dflag = 1; 418 break; 419 case 'f': 420 afnames = optarg; 421 break; 422 #ifndef SMALL 423 case 'g': 424 gflag = 1; 425 break; 426 #endif 427 case 'h': 428 hflag = 1; 429 break; 430 case 'I': 431 iflag = 1; 432 interface = optarg; 433 break; 434 case 'i': 435 iflag = 1; 436 break; 437 case 'L': 438 Lflag = RT_LFLAG; 439 break; 440 case 'l': 441 lflag = 1; 442 break; 443 case 'M': 444 memf = optarg; 445 break; 446 case 'm': 447 mflag = 1; 448 break; 449 case 'N': 450 nlistf = optarg; 451 break; 452 case 'n': 453 numeric_addr = numeric_port = nflag = RT_NFLAG; 454 break; 455 case 'P': 456 errno = 0; 457 pcbaddr = strtoul(optarg, &cp, 16); 458 if (*cp != '\0' || errno == ERANGE) 459 errx(1, "invalid PCB address %s", 460 optarg); 461 Pflag = 1; 462 break; 463 case 'p': 464 if ((tp = name2protox(optarg)) == NULL) 465 errx(1, "%s: unknown or uninstrumented protocol", 466 optarg); 467 pflag = 1; 468 break; 469 case 'q': 470 qflag = 1; 471 break; 472 case 'r': 473 rflag = 1; 474 break; 475 case 's': 476 ++sflag; 477 break; 478 case 'S': 479 numeric_addr = 1; 480 break; 481 case 't': 482 tflag = 1; 483 break; 484 case 'T': 485 tagflag = RT_TFLAG; 486 break; 487 case 'u': 488 af = AF_LOCAL; 489 break; 490 case 'V': 491 Vflag++; 492 break; 493 case 'v': 494 vflag = RT_VFLAG; 495 break; 496 case 'w': 497 interval = atoi(optarg); 498 iflag = 1; 499 break; 500 case 'X': 501 force_sysctl = 1; 502 break; 503 case '?': 504 default: 505 usage(); 506 } 507 argv += optind; 508 argc -= optind; 509 510 #define BACKWARD_COMPATIBILITY 511 #ifdef BACKWARD_COMPATIBILITY 512 if (*argv) { 513 if (isdigit((unsigned char)**argv)) { 514 interval = atoi(*argv); 515 if (interval <= 0) 516 usage(); 517 ++argv; 518 iflag = 1; 519 } 520 if (*argv) { 521 nlistf = *argv; 522 if (*++argv) 523 memf = *argv; 524 } 525 } 526 #endif 527 528 prepare(nlistf, memf, tp); 529 530 #ifndef SMALL 531 if (Bflag) { 532 if (sflag) 533 bpf_stats(); 534 else 535 bpf_dump(interface); 536 exit(0); 537 } 538 #endif 539 540 if (mflag) { 541 mbpr(nl[N_MBSTAT].n_value, nl[N_MSIZE].n_value, 542 nl[N_MCLBYTES].n_value, nl[N_MBPOOL].n_value, 543 nl[N_MCLPOOL].n_value); 544 exit(0); 545 } 546 if (Pflag) { 547 if (tp == NULL) { 548 /* Default to TCP. */ 549 tp = name2protox("tcp"); 550 } 551 if (tp->pr_dump) 552 (*tp->pr_dump)(nl[tp->pr_index].n_value, tp->pr_name, 553 pcbaddr); 554 else 555 printf("%s: no PCB dump routine\n", tp->pr_name); 556 exit(0); 557 } 558 if (pflag) { 559 if (iflag && tp->pr_istats) 560 intpr(interval, nl[N_IFNET_LIST].n_value, tp->pr_istats); 561 else if (tp->pr_stats) 562 (*tp->pr_stats)(nl[tp->pr_sindex].n_value, 563 tp->pr_name); 564 else 565 printf("%s: no stats routine\n", tp->pr_name); 566 exit(0); 567 } 568 if (qflag) { 569 print_softintrq(); 570 exit(0); 571 } 572 /* 573 * Keep file descriptors open to avoid overhead 574 * of open/close on each call to get* routines. 575 */ 576 sethostent(1); 577 setnetent(1); 578 /* 579 * If -f was used afnames != NULL, loop over the address families. 580 * Otherwise do this at least once (with af == AF_UNSPEC). 581 */ 582 afname = NULL; 583 do { 584 if (afnames != NULL) { 585 afname = strsep(&afnames, ","); 586 if (afname == NULL) 587 break; /* Exit early */ 588 if (strcmp(afname, "inet") == 0) 589 af = AF_INET; 590 else if (strcmp(afname, "inet6") == 0) 591 af = AF_INET6; 592 else if (strcmp(afname, "arp") == 0) 593 af = AF_ARP; 594 else if (strcmp(afname, "pfkey") == 0) 595 af = PF_KEY; 596 else if (strcmp(afname, "unix") == 0 597 || strcmp(afname, "local") == 0) 598 af = AF_LOCAL; 599 else if (strcmp(afname, "atalk") == 0) 600 af = AF_APPLETALK; 601 else if (strcmp(afname, "mpls") == 0) 602 af = AF_MPLS; 603 else { 604 warnx("%s: unknown address family", 605 afname); 606 continue; 607 } 608 } 609 610 if (iflag) { 611 if (af != AF_UNSPEC) 612 goto protostat; 613 614 intpr(interval, nl[N_IFNET_LIST].n_value, NULL); 615 break; 616 } 617 if (rflag) { 618 if (sflag) 619 rt_stats(use_sysctl ? 0 : nl[N_RTSTAT].n_value); 620 else { 621 if (use_sysctl) 622 p_rttables(af, 623 nflag|tagflag|vflag|Lflag, 0, ~0); 624 else 625 routepr(nl[N_RTREE].n_value); 626 } 627 break; 628 } 629 #ifndef SMALL 630 if (gflag) { 631 if (sflag) { 632 if (af == AF_INET || af == AF_UNSPEC) 633 mrt_stats(nl[N_MRTPROTO].n_value, 634 nl[N_MRTSTAT].n_value); 635 #ifdef INET6 636 if (af == AF_INET6 || af == AF_UNSPEC) 637 mrt6_stats(nl[N_MRT6PROTO].n_value, 638 nl[N_MRT6STAT].n_value); 639 #endif 640 } 641 else { 642 if (af == AF_INET || af == AF_UNSPEC) 643 mroutepr(nl[N_MRTPROTO].n_value, 644 nl[N_MFCHASHTBL].n_value, 645 nl[N_MFCHASH].n_value, 646 nl[N_VIFTABLE].n_value); 647 #ifdef INET6 648 if (af == AF_INET6 || af == AF_UNSPEC) 649 mroute6pr(nl[N_MRT6PROTO].n_value, 650 nl[N_MF6CTABLE].n_value, 651 nl[N_MIF6TABLE].n_value); 652 #endif 653 } 654 break; 655 } 656 #endif 657 protostat: 658 if (af == AF_INET || af == AF_UNSPEC) { 659 setprotoent(1); 660 setservent(1); 661 /* ugh, this is O(MN) ... why do we do this? */ 662 while ((p = getprotoent()) != NULL) { 663 for (tp = protox; tp->pr_name; tp++) 664 if (strcmp(tp->pr_name, p->p_name) == 0) 665 break; 666 if (tp->pr_name == 0 || tp->pr_wanted == 0) 667 continue; 668 printproto(tp, p->p_name); 669 tp->pr_wanted = 0; 670 } 671 endprotoent(); 672 for (tp = protox; tp->pr_name; tp++) 673 if (tp->pr_wanted) 674 printproto(tp, tp->pr_name); 675 } 676 #ifdef INET6 677 if (af == AF_INET6 || af == AF_UNSPEC) 678 for (tp = ip6protox; tp->pr_name; tp++) 679 printproto(tp, tp->pr_name); 680 #endif 681 if (af == AF_ARP || af == AF_UNSPEC) 682 for (tp = arpprotox; tp->pr_name; tp++) 683 printproto(tp, tp->pr_name); 684 #ifdef IPSEC 685 if (af == PF_KEY || af == AF_UNSPEC) 686 for (tp = pfkeyprotox; tp->pr_name; tp++) 687 printproto(tp, tp->pr_name); 688 #endif 689 #ifndef SMALL 690 if (af == AF_APPLETALK || af == AF_UNSPEC) 691 for (tp = atalkprotox; tp->pr_name; tp++) 692 printproto(tp, tp->pr_name); 693 if ((af == AF_LOCAL || af == AF_UNSPEC) && !sflag) 694 unixpr(nl[N_UNIXSW].n_value); 695 #endif 696 } while (afnames != NULL && afname != NULL); 697 exit(0); 698 } 699 700 /* 701 * Print out protocol statistics or control blocks (per sflag). 702 * If the interface was not specifically requested, and the symbol 703 * is not in the namelist, ignore this one. 704 */ 705 static void 706 printproto(struct protox *tp, const char *name) 707 { 708 void (*pr)(u_long, const char *); 709 u_long off; 710 711 if (sflag) { 712 if (iflag) { 713 if (tp->pr_istats) 714 intpr(interval, nl[N_IFNET_LIST].n_value, 715 tp->pr_istats); 716 return; 717 } 718 else { 719 pr = tp->pr_stats; 720 off = nl[tp->pr_sindex].n_value; 721 } 722 } else { 723 pr = tp->pr_cblocks; 724 off = nl[tp->pr_index].n_value; 725 } 726 if (pr != NULL && ((off || af != AF_UNSPEC) || use_sysctl)) { 727 (*pr)(off, name); 728 } 729 } 730 731 /* 732 * Print softintrq status. 733 */ 734 void 735 print_softintrq(void) 736 { 737 struct ifqueue intrq, *ifq = &intrq; 738 const struct softintrq *siq; 739 u_long off; 740 741 for (siq = softintrq; siq->siq_name != NULL; siq++) { 742 off = nl[siq->siq_index].n_value; 743 if (off == 0) 744 continue; 745 746 kread(off, (char *)ifq, sizeof(*ifq)); 747 printf("%s:\n", siq->siq_name); 748 printf("\tqueue length: %d\n", ifq->ifq_len); 749 printf("\tmaximum queue length: %d\n", ifq->ifq_maxlen); 750 printf("\tpackets dropped: %d\n", ifq->ifq_drops); 751 } 752 } 753 754 /* 755 * Read kernel memory, return 0 on success. 756 */ 757 int 758 kread(u_long addr, char *buf, int size) 759 { 760 761 if (kvm_read(kvmd, addr, buf, size) != size) { 762 warnx("%s", kvm_geterr(kvmd)); 763 return (-1); 764 } 765 return (0); 766 } 767 768 const char * 769 plural(int n) 770 { 771 772 return (n != 1 ? "s" : ""); 773 } 774 775 const char * 776 plurales(int n) 777 { 778 779 return (n != 1 ? "es" : ""); 780 } 781 782 int 783 get_hardticks(void) 784 { 785 int hardticks; 786 787 kread(nl[N_HARDCLOCK_TICKS].n_value, (char *)&hardticks, 788 sizeof(hardticks)); 789 return (hardticks); 790 } 791 792 /* 793 * Find the protox for the given "well-known" name. 794 */ 795 static struct protox * 796 knownname(const char *name) 797 { 798 struct protox **tpp, *tp; 799 800 for (tpp = protoprotox; *tpp; tpp++) 801 for (tp = *tpp; tp->pr_name; tp++) 802 if (strcmp(tp->pr_name, name) == 0) 803 return (tp); 804 return (NULL); 805 } 806 807 /* 808 * Find the protox corresponding to name. 809 */ 810 static struct protox * 811 name2protox(const char *name) 812 { 813 struct protox *tp; 814 char **alias; /* alias from p->aliases */ 815 struct protoent *p; 816 817 /* 818 * Try to find the name in the list of "well-known" names. If that 819 * fails, check if name is an alias for an Internet protocol. 820 */ 821 if ((tp = knownname(name)) != NULL) 822 return (tp); 823 824 setprotoent(1); /* make protocol lookup cheaper */ 825 while ((p = getprotoent()) != NULL) { 826 /* assert: name not same as p->name */ 827 for (alias = p->p_aliases; *alias; alias++) 828 if (strcmp(name, *alias) == 0) { 829 endprotoent(); 830 return (knownname(p->p_name)); 831 } 832 } 833 endprotoent(); 834 return (NULL); 835 } 836 837 static void 838 usage(void) 839 { 840 const char *progname = getprogname(); 841 842 (void)fprintf(stderr, 843 "usage: %s [-Aan] [-f address_family[,family ...]] [-M core] [-N system]\n", progname); 844 (void)fprintf(stderr, 845 " %s [-bdgiLmnqrsSv] [-f address_family[,family ...]] [-M core] [-N system]\n", 846 progname); 847 (void)fprintf(stderr, 848 " %s [-dn] [-I interface] [-M core] [-N system] [-w wait]\n", progname); 849 (void)fprintf(stderr, 850 " %s [-p protocol] [-M core] [-N system]\n", progname); 851 (void)fprintf(stderr, 852 " %s [-p protocol] [-M core] [-N system] -P pcbaddr\n", progname); 853 (void)fprintf(stderr, 854 " %s [-p protocol] [-i] [-I Interface] \n", progname); 855 (void)fprintf(stderr, 856 " %s [-s] [-f address_family[,family ...]] [-i] [-I Interface]\n", progname); 857 (void)fprintf(stderr, 858 " %s [-s] [-B] [-I interface]\n", progname); 859 exit(1); 860 } 861
Indexes created Thu Sep 25 02:09:54 GMT 2025