main.c revision 1.85
1 /* $NetBSD: main.c,v 1.85 2013/03/01 18:26:11 joerg 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 1.85 2013/03/01 18:26:11 joerg 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 "prog_ops.h" 68 69 struct nlist nl[] = { 70 #define N_MBSTAT 0 71 { "_mbstat", 0, 0, 0, 0 }, 72 #define N_IPSTAT 1 73 { "_ipstat", 0, 0, 0, 0 }, /* not available via kvm */ 74 #define N_TCBTABLE 2 75 { "_tcbtable", 0, 0, 0, 0 }, 76 #define N_TCPSTAT 3 77 { "_tcpstat", 0, 0, 0, 0 }, /* not available via kvm */ 78 #define N_UDBTABLE 4 79 { "_udbtable", 0, 0, 0, 0 }, 80 #define N_UDPSTAT 5 81 { "_udpstat", 0, 0, 0, 0 }, /* not available via kvm */ 82 #define N_IFNET 6 83 { "_ifnet", 0, 0, 0, 0 }, 84 #define N_ICMPSTAT 7 85 { "_icmpstat", 0, 0, 0, 0 }, /* not available via kvm */ 86 #define N_RTSTAT 8 87 { "_rtstat", 0, 0, 0, 0 }, 88 #define N_UNIXSW 9 89 { "_unixsw", 0, 0, 0, 0 }, 90 #define N_RTREE 10 91 { "_rt_tables", 0, 0, 0, 0 }, 92 #define N_NFILE 11 93 { "_nfile", 0, 0, 0, 0 }, 94 #define N_IGMPSTAT 12 95 { "_igmpstat", 0, 0, 0, 0 }, /* not available via kvm */ 96 #define N_MRTPROTO 13 97 { "_ip_mrtproto", 0, 0, 0, 0 }, 98 #define N_MRTSTAT 14 99 { "_mrtstat", 0, 0, 0, 0 }, 100 #define N_MFCHASHTBL 15 101 { "_mfchashtbl", 0, 0, 0, 0 }, 102 #define N_MFCHASH 16 103 { "_mfchash", 0, 0, 0, 0 }, 104 #define N_VIFTABLE 17 105 { "_viftable", 0, 0, 0, 0 }, 106 #define N_MSIZE 18 107 { "_msize", 0, 0, 0, 0 }, 108 #define N_MCLBYTES 19 109 { "_mclbytes", 0, 0, 0, 0 }, 110 #define N_DDPSTAT 20 111 { "_ddpstat", 0, 0, 0, 0 }, /* not available via kvm */ 112 #define N_DDPCB 21 113 { "_ddpcb", 0, 0, 0, 0 }, 114 #define N_MBPOOL 22 115 { "_mbpool", 0, 0, 0, 0 }, 116 #define N_MCLPOOL 23 117 { "_mclpool", 0, 0, 0, 0 }, 118 #define N_IP6STAT 24 119 { "_ip6stat", 0, 0, 0, 0 }, /* not available via kvm */ 120 #define N_TCP6STAT 25 121 { "_tcp6stat", 0, 0, 0, 0 }, /* not available via kvm */ 122 #define N_UDP6STAT 26 123 { "_udp6stat", 0, 0, 0, 0 }, /* not available via kvm */ 124 #define N_ICMP6STAT 27 125 { "_icmp6stat", 0, 0, 0, 0 }, /* not available via kvm */ 126 #define N_IPSECSTAT 28 127 { "_ipsecstat", 0, 0, 0, 0 }, /* not available via kvm */ 128 #define N_IPSEC6STAT 29 129 { "_ipsec6stat", 0, 0, 0, 0 }, /* not available via kvm */ 130 #define N_PIM6STAT 30 131 { "_pim6stat", 0, 0, 0, 0 }, /* not available via kvm */ 132 #define N_MRT6PROTO 31 133 { "_ip6_mrtproto", 0, 0, 0, 0 }, 134 #define N_MRT6STAT 32 135 { "_mrt6stat", 0, 0, 0, 0 }, 136 #define N_MF6CTABLE 33 137 { "_mf6ctable", 0, 0, 0, 0 }, 138 #define N_MIF6TABLE 34 139 { "_mif6table", 0, 0, 0, 0 }, 140 #define N_PFKEYSTAT 35 141 { "_pfkeystat", 0, 0, 0, 0 }, /* not available via kvm */ 142 #define N_ARPSTAT 36 143 { "_arpstat", 0, 0, 0, 0 }, /* not available via kvm */ 144 #define N_RIP6STAT 37 145 { "_rip6stat", 0, 0, 0, 0 }, /* not available via kvm */ 146 #define N_ARPINTRQ 38 147 { "_arpintrq", 0, 0, 0, 0 }, 148 #define N_IPINTRQ 39 149 { "_ipintrq", 0, 0, 0, 0 }, 150 #define N_IP6INTRQ 40 151 { "_ip6intrq", 0, 0, 0, 0 }, 152 #define N_ATINTRQ1 41 153 { "_atintrq1", 0, 0, 0, 0 }, 154 #define N_ATINTRQ2 42 155 { "_atintrq2", 0, 0, 0, 0 }, 156 #define N_NSINTRQ 43 157 { "_nsintrq", 0, 0, 0, 0 }, 158 #define N_LLCINTRQ 44 159 { "_llcintrq", 0, 0, 0, 0 }, 160 #define N_HDINTRQ 45 161 { "_hdintrq", 0, 0, 0, 0 }, 162 #define N_NATMINTRQ 46 163 { "_natmintrq", 0, 0, 0, 0 }, 164 #define N_PPPOEDISCINQ 47 165 { "_ppoediscinq", 0, 0, 0, 0 }, 166 #define N_PPPOEINQ 48 167 { "_ppoeinq", 0, 0, 0, 0 }, 168 #define N_PKINTRQ 49 169 { "_pkintrq", 0, 0, 0, 0 }, 170 #define N_HARDCLOCK_TICKS 50 171 { "_hardclock_ticks", 0, 0, 0, 0 }, 172 #define N_PIMSTAT 51 173 { "_pimstat", 0, 0, 0, 0 }, 174 #define N_CARPSTAT 52 175 { "_carpstats", 0, 0, 0, 0 }, /* not available via kvm */ 176 #define N_PFSYNCSTAT 53 177 { "_pfsyncstats", 0, 0, 0, 0}, /* not available via kvm */ 178 { "", 0, 0, 0, 0 }, 179 }; 180 181 struct protox { 182 u_char pr_index; /* index into nlist of cb head */ 183 u_char pr_sindex; /* index into nlist of stat block */ 184 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 185 void (*pr_cblocks) /* control blocks printing routine */ 186 __P((u_long, const char *)); 187 void (*pr_stats) /* statistics printing routine */ 188 __P((u_long, const char *)); 189 void (*pr_istats) 190 __P((const char *)); /* per/if statistics printing routine */ 191 void (*pr_dump) /* PCB state dump routine */ 192 __P((u_long)); 193 const char *pr_name; /* well-known name */ 194 } protox[] = { 195 { N_TCBTABLE, N_TCPSTAT, 1, protopr, 196 tcp_stats, NULL, tcp_dump, "tcp" }, 197 { N_UDBTABLE, N_UDPSTAT, 1, protopr, 198 udp_stats, NULL, 0, "udp" }, 199 { -1, N_IPSTAT, 1, 0, 200 ip_stats, NULL, 0, "ip" }, 201 { -1, N_ICMPSTAT, 1, 0, 202 icmp_stats, NULL, 0, "icmp" }, 203 { -1, N_IGMPSTAT, 1, 0, 204 igmp_stats, NULL, 0, "igmp" }, 205 { -1, N_CARPSTAT, 1, 0, 206 carp_stats, NULL, 0, "carp" }, 207 #ifdef IPSEC 208 { -1, N_IPSECSTAT, 1, 0, 209 fast_ipsec_stats, NULL, 0, "ipsec" }, 210 #endif 211 { -1, N_PIMSTAT, 1, 0, 212 pim_stats, NULL, 0, "pim" }, 213 { -1, N_PFSYNCSTAT, 1, 0, 214 pfsync_stats, NULL, 0, "pfsync" }, 215 { -1, -1, 0, 0, 216 0, NULL, 0, 0 } 217 }; 218 219 #ifdef INET6 220 struct protox ip6protox[] = { 221 { -1, N_IP6STAT, 1, 0, 222 ip6_stats, ip6_ifstats, 0, "ip6" }, 223 { -1, N_ICMP6STAT, 1, 0, 224 icmp6_stats, icmp6_ifstats, 0, "icmp6" }, 225 #ifdef TCP6 226 { N_TCBTABLE, N_TCP6STAT, 1, ip6protopr, 227 tcp6_stats, NULL, tcp6_dump, "tcp6" }, 228 #else 229 { N_TCBTABLE, N_TCP6STAT, 1, ip6protopr, 230 tcp_stats, NULL, tcp_dump, "tcp6" }, 231 #endif 232 { N_UDBTABLE, N_UDP6STAT, 1, ip6protopr, 233 udp6_stats, NULL, 0, "udp6" }, 234 #ifdef IPSEC 235 { -1, N_IPSEC6STAT, 1, 0, 236 fast_ipsec_stats, NULL, 0, "ipsec6" }, 237 #endif 238 { -1, N_PIM6STAT, 1, 0, 239 pim6_stats, NULL, 0, "pim6" }, 240 { -1, N_RIP6STAT, 1, 0, 241 rip6_stats, NULL, 0, "rip6" }, 242 { -1, -1, 0, 0, 243 0, NULL, 0, 0 } 244 }; 245 #endif 246 247 struct protox arpprotox[] = { 248 { -1, N_ARPSTAT, 1, 0, 249 arp_stats, NULL, 0, "arp" }, 250 { -1, -1, 0, 0, 251 0, NULL, 0, 0 } 252 }; 253 254 #ifdef IPSEC 255 struct protox pfkeyprotox[] = { 256 { -1, N_PFKEYSTAT, 1, 0, 257 pfkey_stats, NULL, 0, "pfkey" }, 258 { -1, -1, 0, 0, 259 0, NULL, 0, 0 } 260 }; 261 #endif 262 263 #ifndef SMALL 264 struct protox atalkprotox[] = { 265 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, 266 ddp_stats, NULL, 0, "ddp" }, 267 { -1, -1, 0, 0, 268 0, NULL, 0, NULL } 269 }; 270 #endif 271 272 struct protox *protoprotox[] = { protox, 273 #ifdef INET6 274 ip6protox, 275 #endif 276 arpprotox, 277 #ifdef IPSEC 278 pfkeyprotox, 279 #endif 280 #ifndef SMALL 281 atalkprotox, 282 #endif 283 NULL }; 284 285 const struct softintrq { 286 const char *siq_name; 287 int siq_index; 288 } softintrq[] = { 289 { "arpintrq", N_ARPINTRQ }, 290 { "ipintrq", N_IPINTRQ }, 291 { "ip6intrq", N_IP6INTRQ }, 292 { "atintrq1", N_ATINTRQ1 }, 293 { "atintrq2", N_ATINTRQ2 }, 294 { "llcintrq", N_LLCINTRQ }, 295 { "hdintrq", N_HDINTRQ }, 296 { "natmintrq", N_NATMINTRQ }, 297 { "ppoediscinq", N_PPPOEDISCINQ }, 298 { "ppoeinq", N_PPPOEINQ }, 299 { "pkintrq", N_PKINTRQ }, 300 { NULL, -1 }, 301 }; 302 303 int main __P((int, char *[])); 304 static void printproto __P((struct protox *, const char *)); 305 static void print_softintrq __P((void)); 306 __dead static void usage(void); 307 static struct protox *name2protox __P((const char *)); 308 static struct protox *knownname __P((const char *)); 309 static void prepare(const char *, const char *, struct protox *tp); 310 static kvm_t *prepare_kvmd(const char *, const char *, char *); 311 312 static kvm_t *kvmd = NULL; 313 gid_t egid; 314 int interval; /* repeat interval for i/f stats */ 315 static const char *nlistf = NULL, *memf = NULL; 316 317 kvm_t * 318 get_kvmd(void) 319 { 320 char buf[_POSIX2_LINE_MAX]; 321 322 if (kvmd != NULL) 323 return kvmd; 324 if ((kvmd = prepare_kvmd(nlistf, memf, buf)) == NULL) 325 errx(1, "kvm error: %s", buf); 326 return kvmd; 327 } 328 329 static kvm_t * 330 prepare_kvmd(const char *nf, const char *mf, char *errbuf) 331 { 332 kvm_t *k; 333 334 (void)setegid(egid); 335 k = kvm_openfiles(nf, mf, NULL, O_RDONLY, errbuf); 336 (void)setgid(getgid()); 337 return k; 338 } 339 340 void 341 prepare(const char *nf, const char *mf, struct protox *tp) 342 { 343 char buf[_POSIX2_LINE_MAX]; 344 /* 345 * Try to figure out if we can use sysctl or not. 346 */ 347 if (nf != NULL && mf != NULL) { 348 /* Of course, we can't use sysctl with dumps. */ 349 if (force_sysctl) 350 errx(EXIT_FAILURE, "can't use sysctl with dumps"); 351 352 /* If we have -M and -N, we're not dealing with live memory. */ 353 use_sysctl = 0; 354 } else if (qflag || 355 iflag || 356 #ifndef SMALL 357 gflag || 358 #endif 359 (pflag && tp->pr_sindex == N_PIMSTAT) || 360 Pflag) { 361 /* These flags are not yet supported via sysctl(3). */ 362 use_sysctl = 0; 363 } else { 364 /* We can use sysctl(3). */ 365 use_sysctl = 1; 366 } 367 368 if (force_sysctl && !use_sysctl) { 369 /* Let the user know what's about to happen. */ 370 warnx("forcing sysctl usage even though it might not be "\ 371 "supported"); 372 use_sysctl = 1; 373 } 374 375 kvmd = prepare_kvmd(nf, mf, buf); 376 377 if (!use_sysctl) { 378 379 if (kvmd == NULL) 380 errx(1, "kvm error: %s", buf); 381 if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) { 382 if (nf) 383 errx(1, "%s: no namelist", nf); 384 else 385 errx(1, "no namelist"); 386 } 387 } else 388 (void)setgid(getgid()); 389 } 390 391 int 392 main(int argc, char *argv[]) 393 { 394 struct protoent *p; 395 struct protox *tp; /* for printing cblocks & stats */ 396 int ch; 397 char *cp; 398 u_long pcbaddr; 399 400 if (prog_init) { 401 if (prog_init() == -1) 402 err(1, "init failed"); 403 force_sysctl = 1; /* cheap trick */ 404 } 405 406 egid = getegid(); 407 (void)setegid(getgid()); 408 tp = NULL; 409 af = AF_UNSPEC; 410 pcbaddr = 0; 411 412 while ((ch = getopt(argc, argv, 413 "AabBdf:ghI:LliM:mN:nP:p:qrsStTuVvw:X")) != -1) 414 switch (ch) { 415 case 'A': 416 Aflag = 1; 417 break; 418 case 'a': 419 aflag = 1; 420 break; 421 case 'b': 422 bflag = 1; 423 break; 424 case 'B': 425 Bflag = 1; 426 break; 427 case 'd': 428 dflag = 1; 429 break; 430 case 'f': 431 if (strcmp(optarg, "inet") == 0) 432 af = AF_INET; 433 else if (strcmp(optarg, "inet6") == 0) 434 af = AF_INET6; 435 else if (strcmp(optarg, "arp") == 0) 436 af = AF_ARP; 437 else if (strcmp(optarg, "pfkey") == 0) 438 af = PF_KEY; 439 else if (strcmp(optarg, "unix") == 0 440 || strcmp(optarg, "local") == 0) 441 af = AF_LOCAL; 442 else if (strcmp(optarg, "atalk") == 0) 443 af = AF_APPLETALK; 444 else if (strcmp(optarg, "mpls") == 0) 445 af = AF_MPLS; 446 else 447 errx(1, "%s: unknown address family", 448 optarg); 449 break; 450 #ifndef SMALL 451 case 'g': 452 gflag = 1; 453 break; 454 #endif 455 case 'h': 456 hflag = 1; 457 break; 458 case 'I': 459 iflag = 1; 460 interface = optarg; 461 break; 462 case 'i': 463 iflag = 1; 464 break; 465 case 'L': 466 Lflag = 1; 467 break; 468 case 'l': 469 lflag = 1; 470 break; 471 case 'M': 472 memf = optarg; 473 break; 474 case 'm': 475 mflag = 1; 476 break; 477 case 'N': 478 nlistf = optarg; 479 break; 480 case 'n': 481 numeric_addr = numeric_port = nflag = 1; 482 break; 483 case 'P': 484 errno = 0; 485 pcbaddr = strtoul(optarg, &cp, 16); 486 if (*cp != '\0' || errno == ERANGE) 487 errx(1, "invalid PCB address %s", 488 optarg); 489 Pflag = 1; 490 break; 491 case 'p': 492 if ((tp = name2protox(optarg)) == NULL) 493 errx(1, "%s: unknown or uninstrumented protocol", 494 optarg); 495 pflag = 1; 496 break; 497 case 'q': 498 qflag = 1; 499 break; 500 case 'r': 501 rflag = 1; 502 break; 503 case 's': 504 ++sflag; 505 break; 506 case 'S': 507 numeric_addr = 1; 508 break; 509 case 't': 510 tflag = 1; 511 break; 512 case 'T': 513 tagflag = 1; 514 break; 515 case 'u': 516 af = AF_LOCAL; 517 break; 518 case 'V': 519 Vflag++; 520 break; 521 case 'v': 522 vflag++; 523 break; 524 case 'w': 525 interval = atoi(optarg); 526 iflag = 1; 527 break; 528 case 'X': 529 force_sysctl = 1; 530 break; 531 case '?': 532 default: 533 usage(); 534 } 535 argv += optind; 536 argc -= optind; 537 538 #define BACKWARD_COMPATIBILITY 539 #ifdef BACKWARD_COMPATIBILITY 540 if (*argv) { 541 if (isdigit((unsigned char)**argv)) { 542 interval = atoi(*argv); 543 if (interval <= 0) 544 usage(); 545 ++argv; 546 iflag = 1; 547 } 548 if (*argv) { 549 nlistf = *argv; 550 if (*++argv) 551 memf = *argv; 552 } 553 } 554 #endif 555 556 prepare(nlistf, memf, tp); 557 558 #ifndef SMALL 559 if (Bflag) { 560 if (sflag) 561 bpf_stats(); 562 else 563 bpf_dump(interface); 564 exit(0); 565 } 566 #endif 567 568 if (mflag) { 569 mbpr(nl[N_MBSTAT].n_value, nl[N_MSIZE].n_value, 570 nl[N_MCLBYTES].n_value, nl[N_MBPOOL].n_value, 571 nl[N_MCLPOOL].n_value); 572 exit(0); 573 } 574 if (Pflag) { 575 if (tp == NULL) { 576 /* Default to TCP. */ 577 tp = name2protox("tcp"); 578 } 579 if (tp->pr_dump) 580 (*tp->pr_dump)(pcbaddr); 581 else 582 printf("%s: no PCB dump routine\n", tp->pr_name); 583 exit(0); 584 } 585 if (pflag) { 586 if (iflag && tp->pr_istats) 587 intpr(interval, nl[N_IFNET].n_value, tp->pr_istats); 588 else if (tp->pr_stats) 589 (*tp->pr_stats)(nl[tp->pr_sindex].n_value, 590 tp->pr_name); 591 else 592 printf("%s: no stats routine\n", tp->pr_name); 593 exit(0); 594 } 595 if (qflag) { 596 print_softintrq(); 597 exit(0); 598 } 599 /* 600 * Keep file descriptors open to avoid overhead 601 * of open/close on each call to get* routines. 602 */ 603 sethostent(1); 604 setnetent(1); 605 if (iflag) { 606 if (af != AF_UNSPEC) 607 goto protostat; 608 609 intpr(interval, nl[N_IFNET].n_value, NULL); 610 exit(0); 611 } 612 if (rflag) { 613 if (sflag) 614 rt_stats(use_sysctl ? 0 : nl[N_RTSTAT].n_value); 615 else { 616 if (!use_sysctl) 617 err(1, "-r is not supported " 618 "for post-mortem analysis."); 619 p_rttables(af); 620 } 621 exit(0); 622 } 623 #ifndef SMALL 624 if (gflag) { 625 if (sflag) { 626 if (af == AF_INET || af == AF_UNSPEC) 627 mrt_stats(nl[N_MRTPROTO].n_value, 628 nl[N_MRTSTAT].n_value); 629 #ifdef INET6 630 if (af == AF_INET6 || af == AF_UNSPEC) 631 mrt6_stats(nl[N_MRT6PROTO].n_value, 632 nl[N_MRT6STAT].n_value); 633 #endif 634 } 635 else { 636 if (af == AF_INET || af == AF_UNSPEC) 637 mroutepr(nl[N_MRTPROTO].n_value, 638 nl[N_MFCHASHTBL].n_value, 639 nl[N_MFCHASH].n_value, 640 nl[N_VIFTABLE].n_value); 641 #ifdef INET6 642 if (af == AF_INET6 || af == AF_UNSPEC) 643 mroute6pr(nl[N_MRT6PROTO].n_value, 644 nl[N_MF6CTABLE].n_value, 645 nl[N_MIF6TABLE].n_value); 646 #endif 647 } 648 exit(0); 649 } 650 #endif 651 protostat: 652 if (af == AF_INET || af == AF_UNSPEC) { 653 setprotoent(1); 654 setservent(1); 655 /* ugh, this is O(MN) ... why do we do this? */ 656 while ((p = getprotoent()) != NULL) { 657 for (tp = protox; tp->pr_name; tp++) 658 if (strcmp(tp->pr_name, p->p_name) == 0) 659 break; 660 if (tp->pr_name == 0 || tp->pr_wanted == 0) 661 continue; 662 printproto(tp, p->p_name); 663 tp->pr_wanted = 0; 664 } 665 endprotoent(); 666 for (tp = protox; tp->pr_name; tp++) 667 if (tp->pr_wanted) 668 printproto(tp, tp->pr_name); 669 } 670 #ifdef INET6 671 if (af == AF_INET6 || af == AF_UNSPEC) 672 for (tp = ip6protox; tp->pr_name; tp++) 673 printproto(tp, tp->pr_name); 674 #endif 675 if (af == AF_ARP || af == AF_UNSPEC) 676 for (tp = arpprotox; tp->pr_name; tp++) 677 printproto(tp, tp->pr_name); 678 #ifdef IPSEC 679 if (af == PF_KEY || af == AF_UNSPEC) 680 for (tp = pfkeyprotox; tp->pr_name; tp++) 681 printproto(tp, tp->pr_name); 682 #endif 683 #ifndef SMALL 684 if (af == AF_APPLETALK || af == AF_UNSPEC) 685 for (tp = atalkprotox; tp->pr_name; tp++) 686 printproto(tp, tp->pr_name); 687 if ((af == AF_LOCAL || af == AF_UNSPEC) && !sflag) 688 unixpr(nl[N_UNIXSW].n_value); 689 #endif 690 exit(0); 691 } 692 693 /* 694 * Print out protocol statistics or control blocks (per sflag). 695 * If the interface was not specifically requested, and the symbol 696 * is not in the namelist, ignore this one. 697 */ 698 static void 699 printproto(struct protox *tp, const char *name) 700 { 701 void (*pr) __P((u_long, const char *)); 702 u_long off; 703 704 if (sflag) { 705 if (iflag) { 706 if (tp->pr_istats) 707 intpr(interval, nl[N_IFNET].n_value, 708 tp->pr_istats); 709 return; 710 } 711 else { 712 pr = tp->pr_stats; 713 off = nl[tp->pr_sindex].n_value; 714 } 715 } else { 716 pr = tp->pr_cblocks; 717 off = nl[tp->pr_index].n_value; 718 } 719 if (pr != NULL && ((off || af != AF_UNSPEC) || use_sysctl)) { 720 (*pr)(off, name); 721 } 722 } 723 724 /* 725 * Print softintrq status. 726 */ 727 void 728 print_softintrq(void) 729 { 730 struct ifqueue intrq, *ifq = &intrq; 731 const struct softintrq *siq; 732 u_long off; 733 734 for (siq = softintrq; siq->siq_name != NULL; siq++) { 735 off = nl[siq->siq_index].n_value; 736 if (off == 0) 737 continue; 738 739 kread(off, (char *)ifq, sizeof(*ifq)); 740 printf("%s:\n", siq->siq_name); 741 printf("\tqueue length: %d\n", ifq->ifq_len); 742 printf("\tmaximum queue length: %d\n", ifq->ifq_maxlen); 743 printf("\tpackets dropped: %d\n", ifq->ifq_drops); 744 } 745 } 746 747 /* 748 * Read kernel memory, return 0 on success. 749 */ 750 int 751 kread(u_long addr, char *buf, int size) 752 { 753 754 if (kvm_read(kvmd, addr, buf, size) != size) { 755 warnx("%s", kvm_geterr(kvmd)); 756 return (-1); 757 } 758 return (0); 759 } 760 761 const char * 762 plural(int n) 763 { 764 765 return (n != 1 ? "s" : ""); 766 } 767 768 const char * 769 plurales(int n) 770 { 771 772 return (n != 1 ? "es" : ""); 773 } 774 775 int 776 get_hardticks(void) 777 { 778 int hardticks; 779 780 kread(nl[N_HARDCLOCK_TICKS].n_value, (char *)&hardticks, 781 sizeof(hardticks)); 782 return (hardticks); 783 } 784 785 /* 786 * Find the protox for the given "well-known" name. 787 */ 788 static struct protox * 789 knownname(const char *name) 790 { 791 struct protox **tpp, *tp; 792 793 for (tpp = protoprotox; *tpp; tpp++) 794 for (tp = *tpp; tp->pr_name; tp++) 795 if (strcmp(tp->pr_name, name) == 0) 796 return (tp); 797 return (NULL); 798 } 799 800 /* 801 * Find the protox corresponding to name. 802 */ 803 static struct protox * 804 name2protox(const char *name) 805 { 806 struct protox *tp; 807 char **alias; /* alias from p->aliases */ 808 struct protoent *p; 809 810 /* 811 * Try to find the name in the list of "well-known" names. If that 812 * fails, check if name is an alias for an Internet protocol. 813 */ 814 if ((tp = knownname(name)) != NULL) 815 return (tp); 816 817 setprotoent(1); /* make protocol lookup cheaper */ 818 while ((p = getprotoent()) != NULL) { 819 /* assert: name not same as p->name */ 820 for (alias = p->p_aliases; *alias; alias++) 821 if (strcmp(name, *alias) == 0) { 822 endprotoent(); 823 return (knownname(p->p_name)); 824 } 825 } 826 endprotoent(); 827 return (NULL); 828 } 829 830 static void 831 usage(void) 832 { 833 const char *progname = getprogname(); 834 835 (void)fprintf(stderr, 836 "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", progname); 837 (void)fprintf(stderr, 838 " %s [-bdgiLmnqrsSv] [-f address_family] [-M core] [-N system]\n", 839 progname); 840 (void)fprintf(stderr, 841 " %s [-dn] [-I interface] [-M core] [-N system] [-w wait]\n", progname); 842 (void)fprintf(stderr, 843 " %s [-p protocol] [-M core] [-N system]\n", progname); 844 (void)fprintf(stderr, 845 " %s [-p protocol] [-M core] [-N system] -P pcbaddr\n", progname); 846 (void)fprintf(stderr, 847 " %s [-p protocol] [-i] [-I Interface] \n", progname); 848 (void)fprintf(stderr, 849 " %s [-s] [-f address_family] [-i] [-I Interface]\n", progname); 850 (void)fprintf(stderr, 851 " %s [-s] [-B] [-I interface]\n", progname); 852 exit(1); 853 } 854
Indexes created Thu Sep 25 16:09:42 GMT 2025