1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1988, 1993 5 * The 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/param.h> 33 #include <sys/protosw.h> 34 #include <sys/socket.h> 35 #include <sys/socketvar.h> 36 #include <sys/sysctl.h> 37 #include <sys/time.h> 38 39 #include <net/ethernet.h> 40 #include <net/if.h> 41 #include <net/if_dl.h> 42 #include <net/if_types.h> 43 #include <net/route.h> 44 45 #include <netinet/in.h> 46 #include <netgraph/ng_socket.h> 47 48 #include <arpa/inet.h> 49 #include <ifaddrs.h> 50 #include <libutil.h> 51 #include <netdb.h> 52 #include <stdbool.h> 53 #include <stdint.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <stdbool.h> 57 #include <string.h> 58 #include <sysexits.h> 59 #include <unistd.h> 60 #include <err.h> 61 #include <libxo/xo.h> 62 #include "netstat.h" 63 #include "common.h" 64 #include "nl_defs.h" 65 66 /* 67 * Definitions for showing gateway flags. 68 */ 69 struct bits rt_bits[] = { 70 { RTF_UP, 'U', "up" }, 71 { RTF_GATEWAY, 'G', "gateway" }, 72 { RTF_HOST, 'H', "host" }, 73 { RTF_REJECT, 'R', "reject" }, 74 { RTF_DYNAMIC, 'D', "dynamic" }, 75 { RTF_MODIFIED, 'M', "modified" }, 76 { RTF_DONE, 'd', "done" }, /* Completed -- for routing msgs only */ 77 { RTF_XRESOLVE, 'X', "xresolve" }, 78 { RTF_STATIC, 'S', "static" }, 79 { RTF_PROTO1, '1', "proto1" }, 80 { RTF_PROTO2, '2', "proto2" }, 81 { RTF_PROTO3, '3', "proto3" }, 82 { RTF_BLACKHOLE,'B', "blackhole" }, 83 { RTF_BROADCAST,'b', "broadcast" }, 84 #ifdef RTF_LLINFO 85 { RTF_LLINFO, 'L', "llinfo" }, 86 #endif 87 { 0 , 0, NULL } 88 }; 89 90 #ifdef WITHOUT_NETLINK 91 static struct ifmap_entry *ifmap; 92 static size_t ifmap_size; 93 #endif 94 static struct timespec uptime; 95 96 static const char *netname4(in_addr_t, in_addr_t); 97 #ifdef INET6 98 static const char *netname6(struct sockaddr_in6 *, struct sockaddr_in6 *); 99 #endif 100 #ifdef WITHOUT_NETLINK 101 static void p_rtable_sysctl(int, int); 102 static void p_rtentry_sysctl(const char *name, struct rt_msghdr *); 103 #endif 104 static void domask(char *, size_t, u_long); 105 106 const uint32_t rt_default_weight = RT_DEFAULT_WEIGHT; 107 108 /* 109 * Print routing tables. 110 */ 111 void 112 routepr(int fibnum, int af) 113 { 114 size_t intsize; 115 int numfibs; 116 117 if (live == 0) 118 return; 119 120 intsize = sizeof(int); 121 if (fibnum == -1 && 122 sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1) 123 fibnum = 0; 124 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 125 numfibs = 1; 126 if (fibnum < 0 || fibnum > numfibs - 1) 127 errx(EX_USAGE, "%d: invalid fib", fibnum); 128 /* 129 * Since kernel & userland use different timebase 130 * (time_uptime vs time_second) and we are reading kernel memory 131 * directly we should do rt_expire --> expire_time conversion. 132 */ 133 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 134 err(EX_OSERR, "clock_gettime() failed"); 135 136 xo_open_container("route-information"); 137 xo_emit("{T:Routing tables}"); 138 if (fibnum) 139 xo_emit(" ({L:fib}: {:fib/%d})", fibnum); 140 xo_emit("\n"); 141 #ifdef WITHOUT_NETLINK 142 p_rtable_sysctl(fibnum, af); 143 #else 144 p_rtable_netlink(fibnum, af); 145 #endif 146 xo_close_container("route-information"); 147 } 148 149 150 /* 151 * Print address family header before a section of the routing table. 152 */ 153 void 154 pr_family(int af1) 155 { 156 const char *afname; 157 158 switch (af1) { 159 case AF_INET: 160 afname = "Internet"; 161 break; 162 #ifdef INET6 163 case AF_INET6: 164 afname = "Internet6"; 165 break; 166 #endif /*INET6*/ 167 case AF_ISO: 168 afname = "ISO"; 169 break; 170 case AF_CCITT: 171 afname = "X.25"; 172 break; 173 case AF_NETGRAPH: 174 afname = "Netgraph"; 175 break; 176 default: 177 afname = NULL; 178 break; 179 } 180 if (afname) 181 xo_emit("\n{k:address-family/%s}:\n", afname); 182 else 183 xo_emit("\n{L:Protocol Family} {k:address-family/%d}:\n", af1); 184 } 185 186 /* column widths; each followed by one space */ 187 #define WID_IF_DEFAULT (Wflag ? IFNAMSIZ : 12) /* width of netif column */ 188 #ifndef INET6 189 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 190 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 191 #else 192 #define WID_DST_DEFAULT(af) \ 193 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 194 #define WID_GW_DEFAULT(af) \ 195 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 196 #endif /*INET6*/ 197 198 struct _wid wid; 199 200 /* 201 * Print header for routing table columns. 202 */ 203 void 204 pr_rthdr(int af1 __unused) 205 { 206 207 if (Wflag) { 208 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 209 "{T:/%*.*s} {T:/%*.*s} {T:/%*s}\n", 210 wid.dst, wid.dst, "Destination", 211 wid.gw, wid.gw, "Gateway", 212 wid.flags, wid.flags, "Flags", 213 wid.mtu, wid.mtu, "Nhop#", 214 wid.mtu, wid.mtu, "Mtu", 215 wid.iface, wid.iface, "Netif", 216 wid.expire, "Expire"); 217 } else { 218 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 219 "{T:/%*s}\n", 220 wid.dst, wid.dst, "Destination", 221 wid.gw, wid.gw, "Gateway", 222 wid.flags, wid.flags, "Flags", 223 wid.iface, wid.iface, "Netif", 224 wid.expire, "Expire"); 225 } 226 } 227 228 void 229 set_wid(int fam) 230 { 231 wid.dst = WID_DST_DEFAULT(fam); 232 wid.gw = WID_GW_DEFAULT(fam); 233 wid.flags = 6; 234 wid.pksent = 8; 235 wid.mtu = 6; 236 wid.iface = WID_IF_DEFAULT; 237 wid.expire = 6; 238 } 239 240 #ifdef WITHOUT_NETLINK 241 static void 242 p_rtable_sysctl(int fibnum, int af) 243 { 244 size_t needed; 245 int mib[7]; 246 char *buf, *next, *lim; 247 struct rt_msghdr *rtm; 248 struct sockaddr *sa; 249 int fam = AF_UNSPEC; 250 int need_table_close = false; 251 252 ifmap = prepare_ifmap(&ifmap_size); 253 254 mib[0] = CTL_NET; 255 mib[1] = PF_ROUTE; 256 mib[2] = 0; 257 mib[3] = af; 258 mib[4] = NET_RT_DUMP; 259 mib[5] = 0; 260 mib[6] = fibnum; 261 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0) 262 err(EX_OSERR, "sysctl: net.route.0.%d.dump.%d estimate", af, 263 fibnum); 264 if ((buf = malloc(needed)) == NULL) 265 errx(2, "malloc(%lu)", (unsigned long)needed); 266 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) 267 err(1, "sysctl: net.route.0.%d.dump.%d", af, fibnum); 268 lim = buf + needed; 269 xo_open_container("route-table"); 270 xo_open_list("rt-family"); 271 for (next = buf; next < lim; next += rtm->rtm_msglen) { 272 rtm = (struct rt_msghdr *)next; 273 if (rtm->rtm_version != RTM_VERSION) 274 continue; 275 /* 276 * Peek inside header to determine AF 277 */ 278 sa = (struct sockaddr *)(rtm + 1); 279 /* Only print family first time. */ 280 if (fam != sa->sa_family) { 281 if (need_table_close) { 282 xo_close_list("rt-entry"); 283 xo_close_instance("rt-family"); 284 } 285 need_table_close = true; 286 fam = sa->sa_family; 287 set_wid(fam); 288 xo_open_instance("rt-family"); 289 pr_family(fam); 290 xo_open_list("rt-entry"); 291 292 pr_rthdr(fam); 293 } 294 p_rtentry_sysctl("rt-entry", rtm); 295 } 296 if (need_table_close) { 297 xo_close_list("rt-entry"); 298 xo_close_instance("rt-family"); 299 } 300 xo_close_list("rt-family"); 301 xo_close_container("route-table"); 302 free(buf); 303 } 304 305 static void 306 p_rtentry_sysctl(const char *name, struct rt_msghdr *rtm) 307 { 308 struct sockaddr *sa, *addr[RTAX_MAX]; 309 char buffer[128]; 310 char prettyname[128]; 311 int i, protrusion; 312 313 xo_open_instance(name); 314 sa = (struct sockaddr *)(rtm + 1); 315 for (i = 0; i < RTAX_MAX; i++) { 316 if (rtm->rtm_addrs & (1 << i)) { 317 addr[i] = sa; 318 sa = (struct sockaddr *)((char *)sa + SA_SIZE(sa)); 319 } 320 } 321 322 protrusion = p_sockaddr("destination", addr[RTAX_DST], 323 addr[RTAX_NETMASK], 324 rtm->rtm_flags, wid.dst); 325 protrusion = p_sockaddr("gateway", addr[RTAX_GATEWAY], NULL, RTF_HOST, 326 wid.gw - protrusion); 327 snprintf(buffer, sizeof(buffer), "{[:-%d}{:flags/%%s}{]:} ", 328 wid.flags - protrusion); 329 p_flags(rtm->rtm_flags, buffer); 330 /* Output path weight as non-visual property */ 331 xo_emit("{e:weight/%u}", rtm->rtm_rmx.rmx_weight); 332 if (Wflag) { 333 /* XXX: use=0? */ 334 xo_emit("{t:nhop/%*lu} ", wid.mtu, rtm->rtm_rmx.rmx_nhidx); 335 336 if (rtm->rtm_rmx.rmx_mtu != 0) 337 xo_emit("{t:mtu/%*lu} ", wid.mtu, rtm->rtm_rmx.rmx_mtu); 338 else 339 xo_emit("{P:/%*s} ", wid.mtu, ""); 340 } 341 342 memset(prettyname, 0, sizeof(prettyname)); 343 if (rtm->rtm_index < ifmap_size) { 344 strlcpy(prettyname, ifmap[rtm->rtm_index].ifname, 345 sizeof(prettyname)); 346 if (*prettyname == '\0') 347 strlcpy(prettyname, "---", sizeof(prettyname)); 348 } 349 350 if (Wflag) 351 xo_emit("{t:interface-name/%*s}", wid.iface, prettyname); 352 else 353 xo_emit("{t:interface-name/%*.*s}", wid.iface, wid.iface, 354 prettyname); 355 if (rtm->rtm_rmx.rmx_expire) { 356 time_t expire_time; 357 358 if ((expire_time = rtm->rtm_rmx.rmx_expire - uptime.tv_sec) > 0) 359 xo_emit(" {:expire-time/%*d}", wid.expire, 360 (int)expire_time); 361 } 362 363 xo_emit("\n"); 364 xo_close_instance(name); 365 } 366 #endif 367 368 int 369 p_sockaddr(const char *name, struct sockaddr *sa, struct sockaddr *mask, 370 int flags, int width) 371 { 372 const char *cp; 373 char buf[128]; 374 int protrusion; 375 376 cp = fmt_sockaddr(sa, mask, flags); 377 378 if (width < 0) { 379 snprintf(buf, sizeof(buf), "{:%s/%%s} ", name); 380 xo_emit(buf, cp); 381 protrusion = 0; 382 } else { 383 if (Wflag != 0 || numeric_addr) { 384 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%s}{]:} ", 385 -width, name); 386 xo_emit(buf, cp); 387 protrusion = strlen(cp) - width; 388 if (protrusion < 0) 389 protrusion = 0; 390 } else { 391 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%-.*s}{]:} ", 392 -width, name); 393 xo_emit(buf, width, cp); 394 protrusion = 0; 395 } 396 } 397 return (protrusion); 398 } 399 400 const char * 401 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 402 { 403 static char buf[128]; 404 const char *cp; 405 406 if (sa == NULL) 407 return ("null"); 408 409 switch(sa->sa_family) { 410 #ifdef INET6 411 case AF_INET6: 412 /* 413 * The sa6->sin6_scope_id must be filled here because 414 * this sockaddr is extracted from kmem(4) directly 415 * and has KAME-specific embedded scope id in 416 * sa6->sin6_addr.s6_addr[2]. 417 */ 418 in6_fillscopeid(satosin6(sa)); 419 /* FALLTHROUGH */ 420 #endif /*INET6*/ 421 case AF_INET: 422 if (flags & RTF_HOST) 423 cp = routename(sa, numeric_addr); 424 else if (mask) 425 cp = netname(sa, mask); 426 else 427 cp = netname(sa, NULL); 428 break; 429 case AF_NETGRAPH: 430 { 431 strlcpy(buf, ((struct sockaddr_ng *)sa)->sg_data, 432 sizeof(buf)); 433 cp = buf; 434 break; 435 } 436 case AF_LINK: 437 { 438 #if 0 439 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 440 441 /* Interface route. */ 442 if (sdl->sdl_nlen) 443 cp = sdl->sdl_data; 444 else 445 #endif 446 cp = routename(sa, 1); 447 break; 448 } 449 default: 450 { 451 u_char *s = (u_char *)sa->sa_data, *slim; 452 char *cq, *cqlim; 453 454 cq = buf; 455 slim = sa->sa_len + (u_char *) sa; 456 cqlim = cq + sizeof(buf) - sizeof(" ffff"); 457 snprintf(cq, sizeof(buf), "(%d)", sa->sa_family); 458 cq += strlen(cq); 459 while (s < slim && cq < cqlim) { 460 snprintf(cq, sizeof(" ff"), " %02x", *s++); 461 cq += strlen(cq); 462 if (s < slim) { 463 snprintf(cq, sizeof("ff"), "%02x", *s++); 464 cq += strlen(cq); 465 } 466 } 467 cp = buf; 468 } 469 } 470 471 return (cp); 472 } 473 474 void 475 p_flags(int f, const char *format) 476 { 477 478 print_flags_generic(f, rt_bits, format, "flags_pretty"); 479 } 480 481 482 char * 483 routename(struct sockaddr *sa, int flags) 484 { 485 static char line[NI_MAXHOST]; 486 int error, f; 487 488 f = (flags) ? NI_NUMERICHOST : 0; 489 error = getnameinfo(sa, sa->sa_len, line, sizeof(line), 490 NULL, 0, f); 491 if (error) { 492 const void *src; 493 switch (sa->sa_family) { 494 #ifdef INET 495 case AF_INET: 496 src = &satosin(sa)->sin_addr; 497 break; 498 #endif /* INET */ 499 #ifdef INET6 500 case AF_INET6: 501 src = &satosin6(sa)->sin6_addr; 502 break; 503 #endif /* INET6 */ 504 default: 505 return(line); 506 } 507 inet_ntop(sa->sa_family, src, line, sizeof(line) - 1); 508 return (line); 509 } 510 trimdomain(line, strlen(line)); 511 512 return (line); 513 } 514 515 #define NSHIFT(m) ( \ 516 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 517 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 518 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 519 0) 520 521 static void 522 domask(char *dst, size_t buflen, u_long mask) 523 { 524 int b, i; 525 526 if (mask == 0) { 527 *dst = '\0'; 528 return; 529 } 530 i = 0; 531 for (b = 0; b < 32; b++) 532 if (mask & (1 << b)) { 533 int bb; 534 535 i = b; 536 for (bb = b+1; bb < 32; bb++) 537 if (!(mask & (1 << bb))) { 538 i = -1; /* noncontig */ 539 break; 540 } 541 break; 542 } 543 if (i == -1) 544 snprintf(dst, buflen, "&0x%lx", mask); 545 else 546 snprintf(dst, buflen, "/%d", 32-i); 547 } 548 549 /* 550 * Return the name of the network whose address is given. 551 */ 552 const char * 553 netname(struct sockaddr *sa, struct sockaddr *mask) 554 { 555 switch (sa->sa_family) { 556 case AF_INET: 557 if (mask != NULL) 558 return (netname4(satosin(sa)->sin_addr.s_addr, 559 satosin(mask)->sin_addr.s_addr)); 560 else 561 return (netname4(satosin(sa)->sin_addr.s_addr, 562 INADDR_ANY)); 563 break; 564 #ifdef INET6 565 case AF_INET6: 566 return (netname6(satosin6(sa), satosin6(mask))); 567 #endif /* INET6 */ 568 default: 569 return (NULL); 570 } 571 } 572 573 static const char * 574 netname4(in_addr_t in, in_addr_t mask) 575 { 576 char *cp = 0; 577 static char line[MAXHOSTNAMELEN + sizeof("&0xffffffff")]; 578 char nline[INET_ADDRSTRLEN]; 579 struct netent *np = 0; 580 in_addr_t i; 581 582 if (in == INADDR_ANY && mask == 0) { 583 strlcpy(line, "default", sizeof(line)); 584 return (line); 585 } 586 587 /* It is ok to supply host address. */ 588 in &= mask; 589 590 i = ntohl(in); 591 if (!numeric_addr && i) { 592 np = getnetbyaddr(i >> NSHIFT(ntohl(mask)), AF_INET); 593 if (np != NULL) { 594 cp = np->n_name; 595 trimdomain(cp, strlen(cp)); 596 } 597 } 598 if (cp != NULL) 599 strlcpy(line, cp, sizeof(line)); 600 else { 601 inet_ntop(AF_INET, &in, nline, sizeof(nline)); 602 strlcpy(line, nline, sizeof(line)); 603 domask(line + strlen(line), sizeof(line) - strlen(line), ntohl(mask)); 604 } 605 606 return (line); 607 } 608 609 #undef NSHIFT 610 611 #ifdef INET6 612 void 613 in6_fillscopeid(struct sockaddr_in6 *sa6) 614 { 615 #if defined(__KAME__) 616 /* 617 * XXX: This is a special workaround for KAME kernels. 618 * sin6_scope_id field of SA should be set in the future. 619 */ 620 if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) || 621 IN6_IS_ADDR_MC_NODELOCAL(&sa6->sin6_addr) || 622 IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) { 623 if (sa6->sin6_scope_id == 0) 624 sa6->sin6_scope_id = 625 ntohs(*(u_int16_t *)&sa6->sin6_addr.s6_addr[2]); 626 sa6->sin6_addr.s6_addr[2] = sa6->sin6_addr.s6_addr[3] = 0; 627 } 628 #endif 629 } 630 631 /* Mask to length table. To check an invalid value, (length + 1) is used. */ 632 static const u_char masktolen[256] = { 633 [0xff] = 8 + 1, 634 [0xfe] = 7 + 1, 635 [0xfc] = 6 + 1, 636 [0xf8] = 5 + 1, 637 [0xf0] = 4 + 1, 638 [0xe0] = 3 + 1, 639 [0xc0] = 2 + 1, 640 [0x80] = 1 + 1, 641 [0x00] = 0 + 1, 642 }; 643 644 static const char * 645 netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask) 646 { 647 static char line[NI_MAXHOST + sizeof("/xxx") - 1]; 648 struct sockaddr_in6 addr; 649 char nline[NI_MAXHOST]; 650 char maskbuf[sizeof("/xxx")]; 651 u_char *p, *lim; 652 u_char masklen; 653 int i; 654 bool illegal = false; 655 656 if (mask) { 657 p = (u_char *)&mask->sin6_addr; 658 for (masklen = 0, lim = p + 16; p < lim; p++) { 659 if (masktolen[*p] > 0) { 660 /* -1 is required. */ 661 masklen += (masktolen[*p] - 1); 662 } else 663 illegal = true; 664 } 665 if (illegal) 666 xo_error("illegal prefixlen\n"); 667 668 memcpy(&addr, sa6, sizeof(addr)); 669 for (i = 0; i < 16; ++i) 670 addr.sin6_addr.s6_addr[i] &= 671 mask->sin6_addr.s6_addr[i]; 672 sa6 = &addr; 673 } 674 else 675 masklen = 128; 676 677 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 678 return("default"); 679 680 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, nline, sizeof(nline), 681 NULL, 0, NI_NUMERICHOST); 682 if (numeric_addr) 683 strlcpy(line, nline, sizeof(line)); 684 else 685 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, 686 sizeof(line), NULL, 0, 0); 687 if (numeric_addr || strcmp(line, nline) == 0) { 688 snprintf(maskbuf, sizeof(maskbuf), "/%d", masklen); 689 strlcat(line, maskbuf, sizeof(line)); 690 } 691 692 return (line); 693 } 694 #endif /*INET6*/ 695 696 /* 697 * Print routing statistics 698 */ 699 void 700 rt_stats(void) 701 { 702 struct rtstat rtstat; 703 u_long rtsaddr; 704 705 if ((rtsaddr = nl[N_RTSTAT].n_value) == 0) { 706 xo_emit("{W:rtstat: symbol not in namelist}\n"); 707 return; 708 } 709 kread_counters(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 710 xo_emit("{T:routing}:\n"); 711 712 #define p(f, m) if (rtstat.f || sflag <= 1) \ 713 xo_emit(m, rtstat.f, plural(rtstat.f)) 714 715 p(rts_badredirect, "\t{:bad-redirects/%ju} " 716 "{N:/bad routing redirect%s}\n"); 717 p(rts_dynamic, "\t{:dynamically-created/%ju} " 718 "{N:/dynamically created route%s}\n"); 719 p(rts_newgateway, "\t{:new-gateways/%ju} " 720 "{N:/new gateway%s due to redirects}\n"); 721 p(rts_unreach, "\t{:unreachable-destination/%ju} " 722 "{N:/destination%s found unreachable}\n"); 723 p(rts_wildcard, "\t{:wildcard-uses/%ju} " 724 "{N:/use%s of a wildcard route}\n"); 725 #undef p 726 } 727