inet.c revision 1.28
1 /* $NetBSD: inet.c,v 1.28 1998/01/07 22:55:07 lukem Exp $ */ 2 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "from: @(#)inet.c 8.4 (Berkeley) 4/20/94"; 40 #else 41 __RCSID("$NetBSD: inet.c,v 1.28 1998/01/07 22:55:07 lukem Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/queue.h> 47 #include <sys/socket.h> 48 #include <sys/socketvar.h> 49 #include <sys/mbuf.h> 50 #include <sys/protosw.h> 51 52 #include <net/route.h> 53 #include <netinet/in.h> 54 #include <netinet/in_systm.h> 55 #include <netinet/ip.h> 56 #include <netinet/in_pcb.h> 57 #include <netinet/ip_icmp.h> 58 #include <netinet/icmp_var.h> 59 #include <netinet/igmp_var.h> 60 #include <netinet/ip_var.h> 61 #include <netinet/tcp.h> 62 #include <netinet/tcpip.h> 63 #include <netinet/tcp_seq.h> 64 #define TCPSTATES 65 #include <netinet/tcp_fsm.h> 66 #include <netinet/tcp_timer.h> 67 #include <netinet/tcp_var.h> 68 #include <netinet/tcp_debug.h> 69 #include <netinet/udp.h> 70 #include <netinet/udp_var.h> 71 72 #include <arpa/inet.h> 73 #include <netdb.h> 74 #include <stdio.h> 75 #include <string.h> 76 #include <unistd.h> 77 #include "netstat.h" 78 79 struct inpcb inpcb; 80 struct tcpcb tcpcb; 81 struct socket sockb; 82 83 char *inetname __P((struct in_addr *)); 84 void inetprint __P((struct in_addr *, u_int16_t, const char *, int)); 85 86 /* 87 * Print a summary of connections related to an Internet 88 * protocol. For TCP, also give state of connection. 89 * Listening processes (aflag) are suppressed unless the 90 * -a (all) flag is specified. 91 */ 92 void 93 protopr(off, name) 94 u_long off; 95 char *name; 96 { 97 struct inpcbtable table; 98 struct inpcb *head, *next, *prev; 99 struct inpcb inpcb; 100 int istcp; 101 static int first = 1; 102 103 if (off == 0) 104 return; 105 istcp = strcmp(name, "tcp") == 0; 106 kread(off, (char *)&table, sizeof table); 107 prev = head = 108 (struct inpcb *)&((struct inpcbtable *)off)->inpt_queue.cqh_first; 109 next = table.inpt_queue.cqh_first; 110 111 while (next != head) { 112 kread((u_long)next, (char *)&inpcb, sizeof inpcb); 113 if (inpcb.inp_queue.cqe_prev != prev) { 114 printf("???\n"); 115 break; 116 } 117 prev = next; 118 next = inpcb.inp_queue.cqe_next; 119 120 if (!aflag && 121 inet_lnaof(inpcb.inp_laddr) == INADDR_ANY) 122 continue; 123 kread((u_long)inpcb.inp_socket, (char *)&sockb, sizeof (sockb)); 124 if (istcp) { 125 kread((u_long)inpcb.inp_ppcb, 126 (char *)&tcpcb, sizeof (tcpcb)); 127 } 128 if (first) { 129 printf("Active Internet connections"); 130 if (aflag) 131 printf(" (including servers)"); 132 putchar('\n'); 133 if (Aflag) 134 printf("%-8.8s ", "PCB"); 135 printf(Aflag ? 136 "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" : 137 "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n", 138 "Proto", "Recv-Q", "Send-Q", 139 "Local Address", "Foreign Address", "(state)"); 140 first = 0; 141 } 142 if (Aflag) 143 if (istcp) 144 printf("%8lx ", (u_long) inpcb.inp_ppcb); 145 else 146 printf("%8lx ", (u_long) prev); 147 printf("%-5.5s %6ld %6ld ", name, sockb.so_rcv.sb_cc, 148 sockb.so_snd.sb_cc); 149 if (nflag) { 150 inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 1); 151 inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 1); 152 } else if (inpcb.inp_flags & INP_ANONPORT) { 153 inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 1); 154 inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 0); 155 } else { 156 inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 0); 157 inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 158 inpcb.inp_lport != inpcb.inp_fport); 159 } 160 if (istcp) { 161 if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES) 162 printf(" %d", tcpcb.t_state); 163 else 164 printf(" %s", tcpstates[tcpcb.t_state]); 165 } 166 putchar('\n'); 167 } 168 } 169 170 /* 171 * Dump TCP statistics structure. 172 */ 173 void 174 tcp_stats(off, name) 175 u_long off; 176 char *name; 177 { 178 struct tcpstat tcpstat; 179 180 if (off == 0) 181 return; 182 printf ("%s:\n", name); 183 kread(off, (char *)&tcpstat, sizeof (tcpstat)); 184 185 #define ps(f, m) if (tcpstat.f || sflag <= 1) \ 186 printf(m, tcpstat.f) 187 #define p(f, m) if (tcpstat.f || sflag <= 1) \ 188 printf(m, tcpstat.f, plural(tcpstat.f)) 189 #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 190 printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2)) 191 #define p2s(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ 192 printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2) 193 #define p3(f, m) if (tcpstat.f || sflag <= 1) \ 194 printf(m, tcpstat.f, plurales(tcpstat.f)) 195 196 p(tcps_sndtotal, "\t%lu packet%s sent\n"); 197 p2(tcps_sndpack,tcps_sndbyte, 198 "\t\t%lu data packet%s (%lu byte%s)\n"); 199 p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, 200 "\t\t%lu data packet%s (%lu byte%s) retransmitted\n"); 201 p2s(tcps_sndacks, tcps_delack, 202 "\t\t%lu ack-only packet%s (%lu delayed)\n"); 203 p(tcps_sndurg, "\t\t%lu URG only packet%s\n"); 204 p(tcps_sndprobe, "\t\t%lu window probe packet%s\n"); 205 p(tcps_sndwinup, "\t\t%lu window update packet%s\n"); 206 p(tcps_sndctrl, "\t\t%lu control packet%s\n"); 207 p(tcps_rcvtotal, "\t%lu packet%s received\n"); 208 p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%lu ack%s (for %lu byte%s)\n"); 209 p(tcps_rcvdupack, "\t\t%lu duplicate ack%s\n"); 210 p(tcps_rcvacktoomuch, "\t\t%lu ack%s for unsent data\n"); 211 p2(tcps_rcvpack, tcps_rcvbyte, 212 "\t\t%lu packet%s (%lu byte%s) received in-sequence\n"); 213 p2(tcps_rcvduppack, tcps_rcvdupbyte, 214 "\t\t%lu completely duplicate packet%s (%lu byte%s)\n"); 215 p(tcps_pawsdrop, "\t\t%lu old duplicate packet%s\n"); 216 p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, 217 "\t\t%lu packet%s with some dup. data (%lu byte%s duped)\n"); 218 p2(tcps_rcvoopack, tcps_rcvoobyte, 219 "\t\t%lu out-of-order packet%s (%lu byte%s)\n"); 220 p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, 221 "\t\t%lu packet%s (%lu byte%s) of data after window\n"); 222 p(tcps_rcvwinprobe, "\t\t%lu window probe%s\n"); 223 p(tcps_rcvwinupd, "\t\t%lu window update packet%s\n"); 224 p(tcps_rcvafterclose, "\t\t%lu packet%s received after close\n"); 225 p(tcps_rcvbadsum, "\t\t%lu discarded for bad checksum%s\n"); 226 p(tcps_rcvbadoff, "\t\t%lu discarded for bad header offset field%s\n"); 227 ps(tcps_rcvshort, "\t\t%lu discarded because packet too short\n"); 228 p(tcps_connattempt, "\t%lu connection request%s\n"); 229 p(tcps_accepts, "\t%lu connection accept%s\n"); 230 p(tcps_connects, "\t%lu connection%s established (including accepts)\n"); 231 p2(tcps_closed, tcps_drops, 232 "\t%lu connection%s closed (including %lu drop%s)\n"); 233 p(tcps_conndrops, "\t%lu embryonic connection%s dropped\n"); 234 p2(tcps_rttupdated, tcps_segstimed, 235 "\t%lu segment%s updated rtt (of %lu attempt%s)\n"); 236 p(tcps_rexmttimeo, "\t%lu retransmit timeout%s\n"); 237 p(tcps_timeoutdrop, "\t\t%lu connection%s dropped by rexmit timeout\n"); 238 p2(tcps_persisttimeo, tcps_persistdrops, 239 "\t%lu persist timeout%s (resulting in %lu dropped connection%s)\n"); 240 p(tcps_keeptimeo, "\t%lu keepalive timeout%s\n"); 241 p(tcps_keepprobe, "\t\t%lu keepalive probe%s sent\n"); 242 p(tcps_keepdrops, "\t\t%lu connection%s dropped by keepalive\n"); 243 p(tcps_predack, "\t%lu correct ACK header prediction%s\n"); 244 p(tcps_preddat, "\t%lu correct data packet header prediction%s\n"); 245 p3(tcps_pcbhashmiss, "\t%lu PCB hash miss%s\n"); 246 ps(tcps_noport, "\t%lu dropped due to no socket\n"); 247 p(tcps_connsdrained, "\t%lu connection%s drained due to memory shortage\n"); 248 249 p(tcps_badsyn, "\t%lu bad connection attempt%s\n"); 250 ps(tcps_sc_added, "\t%lu SYN cache entries added\n"); 251 p(tcps_sc_collisions, "\t\t%lu hash collision%s\n"); 252 ps(tcps_sc_completed, "\t\t%lu completed\n"); 253 ps(tcps_sc_aborted, "\t\t%lu aborted (no space to build PCB)\n"); 254 ps(tcps_sc_timed_out, "\t\t%lu timed out\n"); 255 ps(tcps_sc_overflowed, "\t\t%lu dropped due to overflow\n"); 256 ps(tcps_sc_bucketoverflow, "\t\t%lu dropped due to bucket overflow\n"); 257 ps(tcps_sc_reset, "\t\t%lu dropped due to RST\n"); 258 ps(tcps_sc_unreach, "\t\t%lu dropped due to ICMP unreachable\n"); 259 p(tcps_sc_dupesyn, "\t%lu duplicate SYN%s received for entries already in the cache\n"); 260 p(tcps_sc_dropped, "\t%lu SYN%s dropped (no route or no space)\n"); 261 262 #undef p 263 #undef ps 264 #undef p2 265 #undef p2s 266 #undef p3 267 } 268 269 /* 270 * Dump UDP statistics structure. 271 */ 272 void 273 udp_stats(off, name) 274 u_long off; 275 char *name; 276 { 277 struct udpstat udpstat; 278 u_long delivered; 279 280 if (off == 0) 281 return; 282 printf("%s:\n", name); 283 kread(off, (char *)&udpstat, sizeof (udpstat)); 284 285 #define ps(f, m) if (udpstat.f || sflag <= 1) \ 286 printf(m, udpstat.f) 287 #define p(f, m) if (udpstat.f || sflag <= 1) \ 288 printf(m, udpstat.f, plural(udpstat.f)) 289 #define p3(f, m) if (udpstat.f || sflag <= 1) \ 290 printf(m, udpstat.f, plurales(udpstat.f)) 291 292 p(udps_ipackets, "\t%lu datagram%s received\n"); 293 ps(udps_hdrops, "\t%lu with incomplete header\n"); 294 ps(udps_badlen, "\t%lu with bad data length field\n"); 295 ps(udps_badsum, "\t%lu with bad checksum\n"); 296 ps(udps_noport, "\t%lu dropped due to no socket\n"); 297 p(udps_noportbcast, "\t%lu broadcast/multicast datagram%s dropped due to no socket\n"); 298 ps(udps_fullsock, "\t%lu dropped due to full socket buffers\n"); 299 delivered = udpstat.udps_ipackets - 300 udpstat.udps_hdrops - 301 udpstat.udps_badlen - 302 udpstat.udps_badsum - 303 udpstat.udps_noport - 304 udpstat.udps_noportbcast - 305 udpstat.udps_fullsock; 306 if (delivered || sflag <= 1) 307 printf("\t%lu delivered\n", delivered); 308 p3(udps_pcbhashmiss, "\t%lu PCB hash miss%s\n"); 309 p(udps_opackets, "\t%lu datagram%s output\n"); 310 311 #undef ps 312 #undef p 313 #undef p3 314 } 315 316 /* 317 * Dump IP statistics structure. 318 */ 319 void 320 ip_stats(off, name) 321 u_long off; 322 char *name; 323 { 324 struct ipstat ipstat; 325 326 if (off == 0) 327 return; 328 kread(off, (char *)&ipstat, sizeof (ipstat)); 329 printf("%s:\n", name); 330 331 #define ps(f, m) if (ipstat.f || sflag <= 1) \ 332 printf(m, ipstat.f) 333 #define p(f, m) if (ipstat.f || sflag <= 1) \ 334 printf(m, ipstat.f, plural(ipstat.f)) 335 336 p(ips_total, "\t%lu total packet%s received\n"); 337 p(ips_badsum, "\t%lu bad header checksum%s\n"); 338 ps(ips_toosmall, "\t%lu with size smaller than minimum\n"); 339 ps(ips_tooshort, "\t%lu with data size < data length\n"); 340 ps(ips_toolong, "\t%lu with length > max ip packet size\n"); 341 ps(ips_badhlen, "\t%lu with header length < data size\n"); 342 ps(ips_badlen, "\t%lu with data length < header length\n"); 343 ps(ips_badoptions, "\t%lu with bad options\n"); 344 ps(ips_badvers, "\t%lu with incorrect version number\n"); 345 p(ips_fragments, "\t%lu fragment%s received\n"); 346 p(ips_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n"); 347 p(ips_badfrags, "\t%lu malformed fragment%s dropped\n"); 348 p(ips_fragtimeout, "\t%lu fragment%s dropped after timeout\n"); 349 p(ips_reassembled, "\t%lu packet%s reassembled ok\n"); 350 p(ips_delivered, "\t%lu packet%s for this host\n"); 351 p(ips_noproto, "\t%lu packet%s for unknown/unsupported protocol\n"); 352 p(ips_forward, "\t%lu packet%s forwarded\n"); 353 p(ips_cantforward, "\t%lu packet%s not forwardable\n"); 354 p(ips_redirectsent, "\t%lu redirect%s sent\n"); 355 p(ips_localout, "\t%lu packet%s sent from this host\n"); 356 p(ips_rawout, "\t%lu packet%s sent with fabricated ip header\n"); 357 p(ips_odropped, "\t%lu output packet%s dropped due to no bufs, etc.\n"); 358 p(ips_noroute, "\t%lu output packet%s discarded due to no route\n"); 359 p(ips_fragmented, "\t%lu output datagram%s fragmented\n"); 360 p(ips_ofragments, "\t%lu fragment%s created\n"); 361 p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n"); 362 #undef ps 363 #undef p 364 } 365 366 static char *icmpnames[] = { 367 "echo reply", 368 "#1", 369 "#2", 370 "destination unreachable", 371 "source quench", 372 "routing redirect", 373 "#6", 374 "#7", 375 "echo", 376 "#9", 377 "#10", 378 "time exceeded", 379 "parameter problem", 380 "time stamp", 381 "time stamp reply", 382 "information request", 383 "information request reply", 384 "address mask request", 385 "address mask reply", 386 }; 387 388 /* 389 * Dump ICMP statistics. 390 */ 391 void 392 icmp_stats(off, name) 393 u_long off; 394 char *name; 395 { 396 struct icmpstat icmpstat; 397 int i, first; 398 399 if (off == 0) 400 return; 401 kread(off, (char *)&icmpstat, sizeof (icmpstat)); 402 printf("%s:\n", name); 403 404 #define p(f, m) if (icmpstat.f || sflag <= 1) \ 405 printf(m, icmpstat.f, plural(icmpstat.f)) 406 407 p(icps_error, "\t%lu call%s to icmp_error\n"); 408 p(icps_oldicmp, 409 "\t%lu error%s not generated because old message was icmp\n"); 410 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 411 if (icmpstat.icps_outhist[i] != 0) { 412 if (first) { 413 printf("\tOutput histogram:\n"); 414 first = 0; 415 } 416 printf("\t\t%s: %lu\n", icmpnames[i], 417 icmpstat.icps_outhist[i]); 418 } 419 p(icps_badcode, "\t%lu message%s with bad code fields\n"); 420 p(icps_tooshort, "\t%lu message%s < minimum length\n"); 421 p(icps_checksum, "\t%lu bad checksum%s\n"); 422 p(icps_badlen, "\t%lu message%s with bad length\n"); 423 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) 424 if (icmpstat.icps_inhist[i] != 0) { 425 if (first) { 426 printf("\tInput histogram:\n"); 427 first = 0; 428 } 429 printf("\t\t%s: %lu\n", icmpnames[i], 430 icmpstat.icps_inhist[i]); 431 } 432 p(icps_reflect, "\t%lu message response%s generated\n"); 433 #undef p 434 } 435 436 /* 437 * Dump IGMP statistics structure. 438 */ 439 void 440 igmp_stats(off, name) 441 u_long off; 442 char *name; 443 { 444 struct igmpstat igmpstat; 445 446 if (off == 0) 447 return; 448 kread(off, (char *)&igmpstat, sizeof (igmpstat)); 449 printf("%s:\n", name); 450 451 #define p(f, m) if (igmpstat.f || sflag <= 1) \ 452 printf(m, igmpstat.f, plural(igmpstat.f)) 453 #define py(f, m) if (igmpstat.f || sflag <= 1) \ 454 printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y") 455 p(igps_rcv_total, "\t%lu message%s received\n"); 456 p(igps_rcv_tooshort, "\t%lu message%s received with too few bytes\n"); 457 p(igps_rcv_badsum, "\t%lu message%s received with bad checksum\n"); 458 py(igps_rcv_queries, "\t%lu membership quer%s received\n"); 459 py(igps_rcv_badqueries, "\t%lu membership quer%s received with invalid field(s)\n"); 460 p(igps_rcv_reports, "\t%lu membership report%s received\n"); 461 p(igps_rcv_badreports, "\t%lu membership report%s received with invalid field(s)\n"); 462 p(igps_rcv_ourreports, "\t%lu membership report%s received for groups to which we belong\n"); 463 p(igps_snd_reports, "\t%lu membership report%s sent\n"); 464 #undef p 465 #undef py 466 } 467 468 /* 469 * Pretty print an Internet address (net address + port). 470 * If the nflag was specified, use numbers instead of names. 471 */ 472 void 473 inetprint(in, port, proto, numeric) 474 struct in_addr *in; 475 u_int16_t port; 476 const char *proto; 477 int numeric; 478 { 479 struct servent *sp = 0; 480 char line[80], *cp; 481 int width; 482 483 sprintf(line, "%.*s.", (Aflag && !numeric) ? 12 : 16, inetname(in)); 484 cp = strchr(line, '\0'); 485 if (!numeric && port) 486 sp = getservbyport((int)port, proto); 487 if (sp || port == 0) 488 sprintf(cp, "%.8s", sp ? sp->s_name : "*"); 489 else 490 sprintf(cp, "%u", ntohs(port)); 491 width = Aflag ? 18 : 22; 492 printf(" %-*.*s", width, width, line); 493 } 494 495 /* 496 * Construct an Internet address representation. 497 * If the nflag has been supplied, give 498 * numeric value, otherwise try for symbolic name. 499 */ 500 char * 501 inetname(inp) 502 struct in_addr *inp; 503 { 504 char *cp; 505 static char line[50]; 506 struct hostent *hp; 507 struct netent *np; 508 static char domain[MAXHOSTNAMELEN + 1]; 509 static int first = 1; 510 511 if (first && !nflag) { 512 first = 0; 513 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 514 (cp = strchr(domain, '.'))) 515 (void) strcpy(domain, cp + 1); 516 else 517 domain[0] = 0; 518 } 519 cp = 0; 520 if (!nflag && inp->s_addr != INADDR_ANY) { 521 int net = inet_netof(*inp); 522 int lna = inet_lnaof(*inp); 523 524 if (lna == INADDR_ANY) { 525 np = getnetbyaddr(net, AF_INET); 526 if (np) 527 cp = np->n_name; 528 } 529 if (cp == 0) { 530 hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET); 531 if (hp) { 532 if ((cp = strchr(hp->h_name, '.')) && 533 !strcmp(cp + 1, domain)) 534 *cp = 0; 535 cp = hp->h_name; 536 } 537 } 538 } 539 if (inp->s_addr == INADDR_ANY) 540 strcpy(line, "*"); 541 else if (cp) 542 strcpy(line, cp); 543 else { 544 inp->s_addr = ntohl(inp->s_addr); 545 #define C(x) ((x) & 0xff) 546 sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24), 547 C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr)); 548 } 549 return (line); 550 } 551
Indexes created Thu Oct 02 14:10:14 GMT 2025