1 /* 2 * Copyright (c) 2004 Jeffrey M. Hsu. All rights reserved. 3 * Copyright (c) 2004 The DragonFly Project. All rights reserved. 4 * 5 * This code is derived from software contributed to The DragonFly Project 6 * by Jeffrey M. Hsu. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of The DragonFly Project nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific, prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 30 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1982, 1986, 1991, 1993, 1995 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)in_pcb.c 8.4 (Berkeley) 5/24/95 67 * $FreeBSD: src/sys/netinet/in_pcb.c,v 1.59.2.27 2004/01/02 04:06:42 ambrisko Exp $ 68 * $DragonFly: src/sys/netinet/in_pcb.c,v 1.46 2008/06/08 08:38:05 sephe Exp $ 69 */ 70 71 #include "opt_ipsec.h" 72 #include "opt_inet6.h" 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/malloc.h> 77 #include <sys/mbuf.h> 78 #include <sys/domain.h> 79 #include <sys/protosw.h> 80 #include <sys/socket.h> 81 #include <sys/socketvar.h> 82 #include <sys/proc.h> 83 #include <sys/jail.h> 84 #include <sys/kernel.h> 85 #include <sys/sysctl.h> 86 #include <sys/thread2.h> 87 88 #include <machine/limits.h> 89 90 #include <vm/vm_zone.h> 91 92 #include <net/if.h> 93 #include <net/if_types.h> 94 #include <net/route.h> 95 96 #include <netinet/in.h> 97 #include <netinet/in_pcb.h> 98 #include <netinet/in_var.h> 99 #include <netinet/ip_var.h> 100 #ifdef INET6 101 #include <netinet/ip6.h> 102 #include <netinet6/ip6_var.h> 103 #endif /* INET6 */ 104 105 #ifdef IPSEC 106 #include <netinet6/ipsec.h> 107 #include <netproto/key/key.h> 108 #endif 109 110 #ifdef FAST_IPSEC 111 #if defined(IPSEC) || defined(IPSEC_ESP) 112 #error "Bad idea: don't compile with both IPSEC and FAST_IPSEC!" 113 #endif 114 115 #include <netproto/ipsec/ipsec.h> 116 #include <netproto/ipsec/key.h> 117 #define IPSEC 118 #endif /* FAST_IPSEC */ 119 120 struct in_addr zeroin_addr; 121 122 /* 123 * These configure the range of local port addresses assigned to 124 * "unspecified" outgoing connections/packets/whatever. 125 */ 126 int ipport_lowfirstauto = IPPORT_RESERVED - 1; /* 1023 */ 127 int ipport_lowlastauto = IPPORT_RESERVEDSTART; /* 600 */ 128 129 int ipport_firstauto = IPPORT_RESERVED; /* 1024 */ 130 int ipport_lastauto = IPPORT_USERRESERVED; /* 5000 */ 131 132 int ipport_hifirstauto = IPPORT_HIFIRSTAUTO; /* 49152 */ 133 int ipport_hilastauto = IPPORT_HILASTAUTO; /* 65535 */ 134 135 static __inline void 136 RANGECHK(int var, int min, int max) 137 { 138 if (var < min) 139 var = min; 140 else if (var > max) 141 var = max; 142 } 143 144 static int 145 sysctl_net_ipport_check(SYSCTL_HANDLER_ARGS) 146 { 147 int error; 148 149 error = sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req); 150 if (!error) { 151 RANGECHK(ipport_lowfirstauto, 1, IPPORT_RESERVED - 1); 152 RANGECHK(ipport_lowlastauto, 1, IPPORT_RESERVED - 1); 153 154 RANGECHK(ipport_firstauto, IPPORT_RESERVED, USHRT_MAX); 155 RANGECHK(ipport_lastauto, IPPORT_RESERVED, USHRT_MAX); 156 157 RANGECHK(ipport_hifirstauto, IPPORT_RESERVED, USHRT_MAX); 158 RANGECHK(ipport_hilastauto, IPPORT_RESERVED, USHRT_MAX); 159 } 160 return (error); 161 } 162 163 SYSCTL_NODE(_net_inet_ip, IPPROTO_IP, portrange, CTLFLAG_RW, 0, "IP Ports"); 164 165 SYSCTL_PROC(_net_inet_ip_portrange, OID_AUTO, lowfirst, CTLTYPE_INT|CTLFLAG_RW, 166 &ipport_lowfirstauto, 0, &sysctl_net_ipport_check, "I", ""); 167 SYSCTL_PROC(_net_inet_ip_portrange, OID_AUTO, lowlast, CTLTYPE_INT|CTLFLAG_RW, 168 &ipport_lowlastauto, 0, &sysctl_net_ipport_check, "I", ""); 169 SYSCTL_PROC(_net_inet_ip_portrange, OID_AUTO, first, CTLTYPE_INT|CTLFLAG_RW, 170 &ipport_firstauto, 0, &sysctl_net_ipport_check, "I", ""); 171 SYSCTL_PROC(_net_inet_ip_portrange, OID_AUTO, last, CTLTYPE_INT|CTLFLAG_RW, 172 &ipport_lastauto, 0, &sysctl_net_ipport_check, "I", ""); 173 SYSCTL_PROC(_net_inet_ip_portrange, OID_AUTO, hifirst, CTLTYPE_INT|CTLFLAG_RW, 174 &ipport_hifirstauto, 0, &sysctl_net_ipport_check, "I", ""); 175 SYSCTL_PROC(_net_inet_ip_portrange, OID_AUTO, hilast, CTLTYPE_INT|CTLFLAG_RW, 176 &ipport_hilastauto, 0, &sysctl_net_ipport_check, "I", ""); 177 178 /* 179 * in_pcb.c: manage the Protocol Control Blocks. 180 * 181 * NOTE: It is assumed that most of these functions will be called from 182 * a critical section. XXX - There are, unfortunately, a few exceptions 183 * to this rule that should be fixed. 184 * 185 * NOTE: The caller should initialize the cpu field to the cpu running the 186 * protocol stack associated with this inpcbinfo. 187 */ 188 189 void 190 in_pcbinfo_init(struct inpcbinfo *pcbinfo) 191 { 192 LIST_INIT(&pcbinfo->pcblisthead); 193 pcbinfo->cpu = -1; 194 } 195 196 /* 197 * Allocate a PCB and associate it with the socket. 198 */ 199 int 200 in_pcballoc(struct socket *so, struct inpcbinfo *pcbinfo) 201 { 202 struct inpcb *inp; 203 #ifdef IPSEC 204 int error; 205 #endif 206 207 inp = zalloc(pcbinfo->ipi_zone); 208 if (inp == NULL) 209 return (ENOBUFS); 210 bzero(inp, sizeof *inp); 211 inp->inp_gencnt = ++pcbinfo->ipi_gencnt; 212 inp->inp_pcbinfo = inp->inp_cpcbinfo = pcbinfo; 213 inp->inp_socket = so; 214 #ifdef IPSEC 215 error = ipsec_init_policy(so, &inp->inp_sp); 216 if (error != 0) { 217 zfree(pcbinfo->ipi_zone, inp); 218 return (error); 219 } 220 #endif 221 #ifdef INET6 222 if (INP_SOCKAF(so) == AF_INET6 && ip6_v6only) 223 inp->inp_flags |= IN6P_IPV6_V6ONLY; 224 if (ip6_auto_flowlabel) 225 inp->inp_flags |= IN6P_AUTOFLOWLABEL; 226 #endif 227 so->so_pcb = inp; 228 LIST_INSERT_HEAD(&pcbinfo->pcblisthead, inp, inp_list); 229 pcbinfo->ipi_count++; 230 return (0); 231 } 232 233 int 234 in_pcbbind(struct inpcb *inp, struct sockaddr *nam, struct thread *td) 235 { 236 struct socket *so = inp->inp_socket; 237 struct proc *p = td->td_proc; 238 unsigned short *lastport; 239 struct sockaddr_in *sin; 240 struct sockaddr_in jsin; 241 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 242 struct ucred *cred = NULL; 243 u_short lport = 0; 244 int wild = 0, reuseport = (so->so_options & SO_REUSEPORT); 245 int error; 246 247 KKASSERT(p); 248 249 if (TAILQ_EMPTY(&in_ifaddrheads[mycpuid])) /* XXX broken! */ 250 return (EADDRNOTAVAIL); 251 if (inp->inp_lport != 0 || inp->inp_laddr.s_addr != INADDR_ANY) 252 return (EINVAL); /* already bound */ 253 if (!(so->so_options & (SO_REUSEADDR|SO_REUSEPORT))) 254 wild = 1; /* neither SO_REUSEADDR nor SO_REUSEPORT is set */ 255 if (p) 256 cred = p->p_ucred; 257 if (nam != NULL) { 258 sin = (struct sockaddr_in *)nam; 259 if (nam->sa_len != sizeof *sin) 260 return (EINVAL); 261 #ifdef notdef 262 /* 263 * We should check the family, but old programs 264 * incorrectly fail to initialize it. 265 */ 266 if (sin->sin_family != AF_INET) 267 return (EAFNOSUPPORT); 268 #endif 269 if (!prison_replace_wildcards(td, nam)) 270 return (EINVAL); 271 lport = sin->sin_port; 272 if (IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) { 273 /* 274 * Treat SO_REUSEADDR as SO_REUSEPORT for multicast; 275 * allow complete duplication of binding if 276 * SO_REUSEPORT is set, or if SO_REUSEADDR is set 277 * and a multicast address is bound on both 278 * new and duplicated sockets. 279 */ 280 if (so->so_options & SO_REUSEADDR) 281 reuseport = SO_REUSEADDR | SO_REUSEPORT; 282 } else if (sin->sin_addr.s_addr != INADDR_ANY) { 283 sin->sin_port = 0; /* yech... */ 284 bzero(&sin->sin_zero, sizeof sin->sin_zero); 285 if (ifa_ifwithaddr((struct sockaddr *)sin) == NULL) 286 return (EADDRNOTAVAIL); 287 } 288 if (lport != 0) { 289 struct inpcb *t; 290 291 /* GROSS */ 292 if (ntohs(lport) < IPPORT_RESERVED && 293 cred && suser_cred(cred, PRISON_ROOT)) 294 return (EACCES); 295 if (so->so_cred->cr_uid != 0 && 296 !IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) { 297 t = in_pcblookup_local(inp->inp_pcbinfo, 298 sin->sin_addr, lport, 299 INPLOOKUP_WILDCARD, cred); 300 if (t && 301 (!in_nullhost(sin->sin_addr) || 302 !in_nullhost(t->inp_laddr) || 303 (t->inp_socket->so_options & 304 SO_REUSEPORT) == 0) && 305 (so->so_cred->cr_uid != 306 t->inp_socket->so_cred->cr_uid)) { 307 #ifdef INET6 308 if (!in_nullhost(sin->sin_addr) || 309 !in_nullhost(t->inp_laddr) || 310 INP_SOCKAF(so) == 311 INP_SOCKAF(t->inp_socket)) 312 #endif 313 return (EADDRINUSE); 314 } 315 } 316 if (cred && !prison_replace_wildcards(td, nam)) 317 return (EADDRNOTAVAIL); 318 t = in_pcblookup_local(pcbinfo, sin->sin_addr, lport, 319 wild, cred); 320 if (t && !(reuseport & t->inp_socket->so_options)) { 321 #ifdef INET6 322 if (!in_nullhost(sin->sin_addr) || 323 !in_nullhost(t->inp_laddr) || 324 INP_SOCKAF(so) == INP_SOCKAF(t->inp_socket)) 325 #endif 326 return (EADDRINUSE); 327 } 328 } 329 inp->inp_laddr = sin->sin_addr; 330 } 331 if (lport == 0) { 332 ushort first, last; 333 int count; 334 335 jsin.sin_family = AF_INET; 336 jsin.sin_addr.s_addr = inp->inp_laddr.s_addr; 337 if (!prison_replace_wildcards(td, (struct sockaddr *)&jsin)) { 338 inp->inp_laddr.s_addr = INADDR_ANY; 339 return (EINVAL); 340 } 341 inp->inp_laddr.s_addr = jsin.sin_addr.s_addr; 342 343 inp->inp_flags |= INP_ANONPORT; 344 345 if (inp->inp_flags & INP_HIGHPORT) { 346 first = ipport_hifirstauto; /* sysctl */ 347 last = ipport_hilastauto; 348 lastport = &pcbinfo->lasthi; 349 } else if (inp->inp_flags & INP_LOWPORT) { 350 if (cred && 351 (error = suser_cred(cred, PRISON_ROOT))) { 352 inp->inp_laddr.s_addr = INADDR_ANY; 353 return (error); 354 } 355 first = ipport_lowfirstauto; /* 1023 */ 356 last = ipport_lowlastauto; /* 600 */ 357 lastport = &pcbinfo->lastlow; 358 } else { 359 first = ipport_firstauto; /* sysctl */ 360 last = ipport_lastauto; 361 lastport = &pcbinfo->lastport; 362 } 363 /* 364 * Simple check to ensure all ports are not used up causing 365 * a deadlock here. 366 * 367 * We split the two cases (up and down) so that the direction 368 * is not being tested on each round of the loop. 369 */ 370 if (first > last) { 371 /* 372 * counting down 373 */ 374 count = first - last; 375 376 do { 377 if (count-- < 0) { /* completely used? */ 378 inp->inp_laddr.s_addr = INADDR_ANY; 379 return (EADDRNOTAVAIL); 380 } 381 --*lastport; 382 if (*lastport > first || *lastport < last) 383 *lastport = first; 384 lport = htons(*lastport); 385 } while (in_pcblookup_local(pcbinfo, inp->inp_laddr, 386 lport, wild, cred)); 387 } else { 388 /* 389 * counting up 390 */ 391 count = last - first; 392 393 do { 394 if (count-- < 0) { /* completely used? */ 395 inp->inp_laddr.s_addr = INADDR_ANY; 396 return (EADDRNOTAVAIL); 397 } 398 ++*lastport; 399 if (*lastport < first || *lastport > last) 400 *lastport = first; 401 lport = htons(*lastport); 402 } while (in_pcblookup_local(pcbinfo, inp->inp_laddr, 403 lport, wild, cred)); 404 } 405 } 406 inp->inp_lport = lport; 407 408 jsin.sin_family = AF_INET; 409 jsin.sin_addr.s_addr = inp->inp_laddr.s_addr; 410 if (!prison_replace_wildcards(td, (struct sockaddr*)&jsin)) { 411 inp->inp_laddr.s_addr = INADDR_ANY; 412 inp->inp_lport = 0; 413 return (EINVAL); 414 } 415 inp->inp_laddr.s_addr = jsin.sin_addr.s_addr; 416 417 if (in_pcbinsporthash(inp) != 0) { 418 inp->inp_laddr.s_addr = INADDR_ANY; 419 inp->inp_lport = 0; 420 return (EAGAIN); 421 } 422 return (0); 423 } 424 425 /* 426 * Transform old in_pcbconnect() into an inner subroutine for new 427 * in_pcbconnect(): Do some validity-checking on the remote 428 * address (in mbuf 'nam') and then determine local host address 429 * (i.e., which interface) to use to access that remote host. 430 * 431 * This preserves definition of in_pcbconnect(), while supporting a 432 * slightly different version for T/TCP. (This is more than 433 * a bit of a kludge, but cleaning up the internal interfaces would 434 * have forced minor changes in every protocol). 435 */ 436 int 437 in_pcbladdr(struct inpcb *inp, struct sockaddr *nam, 438 struct sockaddr_in **plocal_sin, struct thread *td) 439 { 440 struct in_ifaddr *ia; 441 struct ucred *cred = NULL; 442 struct sockaddr_in *sin = (struct sockaddr_in *)nam; 443 struct sockaddr *jsin; 444 int jailed = 0, alloc_route = 0; 445 446 if (nam->sa_len != sizeof *sin) 447 return (EINVAL); 448 if (sin->sin_family != AF_INET) 449 return (EAFNOSUPPORT); 450 if (sin->sin_port == 0) 451 return (EADDRNOTAVAIL); 452 if (td && td->td_proc && td->td_proc->p_ucred) 453 cred = td->td_proc->p_ucred; 454 if (cred && cred->cr_prison) 455 jailed = 1; 456 if (!TAILQ_EMPTY(&in_ifaddrheads[mycpuid])) { 457 ia = TAILQ_FIRST(&in_ifaddrheads[mycpuid])->ia; 458 /* 459 * If the destination address is INADDR_ANY, 460 * use the primary local address. 461 * If the supplied address is INADDR_BROADCAST, 462 * and the primary interface supports broadcast, 463 * choose the broadcast address for that interface. 464 */ 465 if (sin->sin_addr.s_addr == INADDR_ANY) 466 sin->sin_addr = IA_SIN(ia)->sin_addr; 467 else if (sin->sin_addr.s_addr == (u_long)INADDR_BROADCAST && 468 (ia->ia_ifp->if_flags & IFF_BROADCAST)) 469 sin->sin_addr = satosin(&ia->ia_broadaddr)->sin_addr; 470 } 471 if (inp->inp_laddr.s_addr == INADDR_ANY) { 472 struct route *ro; 473 474 ia = (struct in_ifaddr *)NULL; 475 /* 476 * If route is known or can be allocated now, 477 * our src addr is taken from the i/f, else punt. 478 * Note that we should check the address family of the cached 479 * destination, in case of sharing the cache with IPv6. 480 */ 481 ro = &inp->inp_route; 482 if (ro->ro_rt && 483 (!(ro->ro_rt->rt_flags & RTF_UP) || 484 ro->ro_dst.sa_family != AF_INET || 485 satosin(&ro->ro_dst)->sin_addr.s_addr != 486 sin->sin_addr.s_addr || 487 inp->inp_socket->so_options & SO_DONTROUTE)) { 488 RTFREE(ro->ro_rt); 489 ro->ro_rt = (struct rtentry *)NULL; 490 } 491 if (!(inp->inp_socket->so_options & SO_DONTROUTE) && /*XXX*/ 492 (ro->ro_rt == (struct rtentry *)NULL || 493 ro->ro_rt->rt_ifp == (struct ifnet *)NULL)) { 494 /* No route yet, so try to acquire one */ 495 bzero(&ro->ro_dst, sizeof(struct sockaddr_in)); 496 ro->ro_dst.sa_family = AF_INET; 497 ro->ro_dst.sa_len = sizeof(struct sockaddr_in); 498 ((struct sockaddr_in *) &ro->ro_dst)->sin_addr = 499 sin->sin_addr; 500 rtalloc(ro); 501 alloc_route = 1; 502 } 503 /* 504 * If we found a route, use the address 505 * corresponding to the outgoing interface 506 * unless it is the loopback (in case a route 507 * to our address on another net goes to loopback). 508 */ 509 if (ro->ro_rt && !(ro->ro_rt->rt_ifp->if_flags & IFF_LOOPBACK)) { 510 if (jailed) { 511 if (jailed_ip(cred->cr_prison, 512 ro->ro_rt->rt_ifa->ifa_addr)) { 513 ia = ifatoia(ro->ro_rt->rt_ifa); 514 } 515 } else { 516 ia = ifatoia(ro->ro_rt->rt_ifa); 517 } 518 } 519 if (ia == NULL) { 520 u_short fport = sin->sin_port; 521 522 sin->sin_port = 0; 523 ia = ifatoia(ifa_ifwithdstaddr(sintosa(sin))); 524 if (ia && jailed && !jailed_ip(cred->cr_prison, 525 sintosa(&ia->ia_addr))) 526 ia = NULL; 527 if (ia == NULL) 528 ia = ifatoia(ifa_ifwithnet(sintosa(sin))); 529 if (ia && jailed && !jailed_ip(cred->cr_prison, 530 sintosa(&ia->ia_addr))) 531 ia = NULL; 532 sin->sin_port = fport; 533 if (ia == NULL && 534 !TAILQ_EMPTY(&in_ifaddrheads[mycpuid])) 535 ia = TAILQ_FIRST(&in_ifaddrheads[mycpuid])->ia; 536 if (ia && jailed && !jailed_ip(cred->cr_prison, 537 sintosa(&ia->ia_addr))) 538 ia = NULL; 539 540 if (!jailed && ia == NULL) 541 goto fail; 542 } 543 /* 544 * If the destination address is multicast and an outgoing 545 * interface has been set as a multicast option, use the 546 * address of that interface as our source address. 547 */ 548 if (!jailed && IN_MULTICAST(ntohl(sin->sin_addr.s_addr)) && 549 inp->inp_moptions != NULL) { 550 struct ip_moptions *imo; 551 struct ifnet *ifp; 552 553 imo = inp->inp_moptions; 554 if (imo->imo_multicast_ifp != NULL) { 555 struct in_ifaddr_container *iac; 556 557 ifp = imo->imo_multicast_ifp; 558 ia = NULL; 559 TAILQ_FOREACH(iac, 560 &in_ifaddrheads[mycpuid], ia_link) { 561 if (iac->ia->ia_ifp == ifp) { 562 ia = iac->ia; 563 break; 564 } 565 } 566 if (ia == NULL) 567 goto fail; 568 } 569 } 570 /* 571 * Don't do pcblookup call here; return interface in plocal_sin 572 * and exit to caller, that will do the lookup. 573 */ 574 if (ia == NULL && jailed) { 575 if ((jsin = prison_get_nonlocal(cred->cr_prison, AF_INET, NULL)) != NULL || 576 (jsin = prison_get_local(cred->cr_prison, AF_INET, NULL)) != NULL) { 577 *plocal_sin = satosin(jsin); 578 } else { 579 /* IPv6 only Jail */ 580 goto fail; 581 } 582 } else { 583 *plocal_sin = &ia->ia_addr; 584 } 585 } 586 return (0); 587 fail: 588 if (alloc_route) { 589 struct route *ro = &inp->inp_route; 590 591 if (ro->ro_rt != NULL) 592 RTFREE(ro->ro_rt); 593 bzero(ro, sizeof(*ro)); 594 } 595 return (EADDRNOTAVAIL); 596 } 597 598 /* 599 * Outer subroutine: 600 * Connect from a socket to a specified address. 601 * Both address and port must be specified in argument sin. 602 * If don't have a local address for this socket yet, 603 * then pick one. 604 */ 605 int 606 in_pcbconnect(struct inpcb *inp, struct sockaddr *nam, struct thread *td) 607 { 608 struct sockaddr_in *if_sin; 609 struct sockaddr_in *sin = (struct sockaddr_in *)nam; 610 int error; 611 612 /* Call inner routine to assign local interface address. */ 613 if ((error = in_pcbladdr(inp, nam, &if_sin, td)) != 0) 614 return (error); 615 616 if (in_pcblookup_hash(inp->inp_cpcbinfo, sin->sin_addr, sin->sin_port, 617 inp->inp_laddr.s_addr ? inp->inp_laddr : if_sin->sin_addr, 618 inp->inp_lport, FALSE, NULL) != NULL) { 619 return (EADDRINUSE); 620 } 621 if (inp->inp_laddr.s_addr == INADDR_ANY) { 622 if (inp->inp_lport == 0) { 623 error = in_pcbbind(inp, (struct sockaddr *)NULL, td); 624 if (error) 625 return (error); 626 } 627 inp->inp_laddr = if_sin->sin_addr; 628 } 629 inp->inp_faddr = sin->sin_addr; 630 inp->inp_fport = sin->sin_port; 631 in_pcbinsconnhash(inp); 632 return (0); 633 } 634 635 void 636 in_pcbdisconnect(struct inpcb *inp) 637 { 638 639 inp->inp_faddr.s_addr = INADDR_ANY; 640 inp->inp_fport = 0; 641 in_pcbremconnhash(inp); 642 if (inp->inp_socket->so_state & SS_NOFDREF) 643 in_pcbdetach(inp); 644 } 645 646 void 647 in_pcbdetach(struct inpcb *inp) 648 { 649 struct socket *so = inp->inp_socket; 650 struct inpcbinfo *ipi = inp->inp_pcbinfo; 651 652 #ifdef IPSEC 653 ipsec4_delete_pcbpolicy(inp); 654 #endif /*IPSEC*/ 655 inp->inp_gencnt = ++ipi->ipi_gencnt; 656 in_pcbremlists(inp); 657 so->so_pcb = 0; 658 sofree(so); 659 if (inp->inp_options) 660 m_free(inp->inp_options); 661 if (inp->inp_route.ro_rt) 662 rtfree(inp->inp_route.ro_rt); 663 ip_freemoptions(inp->inp_moptions); 664 inp->inp_vflag = 0; 665 zfree(ipi->ipi_zone, inp); 666 } 667 668 /* 669 * The calling convention of in_setsockaddr() and in_setpeeraddr() was 670 * modified to match the pru_sockaddr() and pru_peeraddr() entry points 671 * in struct pr_usrreqs, so that protocols can just reference then directly 672 * without the need for a wrapper function. The socket must have a valid 673 * (i.e., non-nil) PCB, but it should be impossible to get an invalid one 674 * except through a kernel programming error, so it is acceptable to panic 675 * (or in this case trap) if the PCB is invalid. (Actually, we don't trap 676 * because there actually /is/ a programming error somewhere... XXX) 677 */ 678 int 679 in_setsockaddr(struct socket *so, struct sockaddr **nam) 680 { 681 struct inpcb *inp; 682 struct sockaddr_in *sin; 683 684 /* 685 * Do the malloc first in case it blocks. 686 */ 687 MALLOC(sin, struct sockaddr_in *, sizeof *sin, M_SONAME, 688 M_WAITOK | M_ZERO); 689 sin->sin_family = AF_INET; 690 sin->sin_len = sizeof *sin; 691 692 crit_enter(); 693 inp = so->so_pcb; 694 if (!inp) { 695 crit_exit(); 696 kfree(sin, M_SONAME); 697 return (ECONNRESET); 698 } 699 sin->sin_port = inp->inp_lport; 700 sin->sin_addr = inp->inp_laddr; 701 crit_exit(); 702 703 *nam = (struct sockaddr *)sin; 704 return (0); 705 } 706 707 int 708 in_setpeeraddr(struct socket *so, struct sockaddr **nam) 709 { 710 struct inpcb *inp; 711 struct sockaddr_in *sin; 712 713 /* 714 * Do the malloc first in case it blocks. 715 */ 716 MALLOC(sin, struct sockaddr_in *, sizeof *sin, M_SONAME, 717 M_WAITOK | M_ZERO); 718 sin->sin_family = AF_INET; 719 sin->sin_len = sizeof *sin; 720 721 crit_enter(); 722 inp = so->so_pcb; 723 if (!inp) { 724 crit_exit(); 725 kfree(sin, M_SONAME); 726 return (ECONNRESET); 727 } 728 sin->sin_port = inp->inp_fport; 729 sin->sin_addr = inp->inp_faddr; 730 crit_exit(); 731 732 *nam = (struct sockaddr *)sin; 733 return (0); 734 } 735 736 void 737 in_pcbnotifyall(struct inpcbhead *head, struct in_addr faddr, int err, 738 void (*notify)(struct inpcb *, int)) 739 { 740 struct inpcb *inp, *ninp; 741 742 /* 743 * note: if INP_PLACEMARKER is set we must ignore the rest of 744 * the structure and skip it. 745 */ 746 crit_enter(); 747 LIST_FOREACH_MUTABLE(inp, head, inp_list, ninp) { 748 if (inp->inp_flags & INP_PLACEMARKER) 749 continue; 750 #ifdef INET6 751 if (!(inp->inp_vflag & INP_IPV4)) 752 continue; 753 #endif 754 if (inp->inp_faddr.s_addr != faddr.s_addr || 755 inp->inp_socket == NULL) 756 continue; 757 (*notify)(inp, err); /* can remove inp from list! */ 758 } 759 crit_exit(); 760 } 761 762 void 763 in_pcbpurgeif0(struct inpcb *head, struct ifnet *ifp) 764 { 765 struct inpcb *inp; 766 struct ip_moptions *imo; 767 int i, gap; 768 769 for (inp = head; inp != NULL; inp = LIST_NEXT(inp, inp_list)) { 770 if (inp->inp_flags & INP_PLACEMARKER) 771 continue; 772 imo = inp->inp_moptions; 773 if ((inp->inp_vflag & INP_IPV4) && imo != NULL) { 774 /* 775 * Unselect the outgoing interface if it is being 776 * detached. 777 */ 778 if (imo->imo_multicast_ifp == ifp) 779 imo->imo_multicast_ifp = NULL; 780 781 /* 782 * Drop multicast group membership if we joined 783 * through the interface being detached. 784 */ 785 for (i = 0, gap = 0; i < imo->imo_num_memberships; 786 i++) { 787 if (imo->imo_membership[i]->inm_ifp == ifp) { 788 in_delmulti(imo->imo_membership[i]); 789 gap++; 790 } else if (gap != 0) 791 imo->imo_membership[i - gap] = 792 imo->imo_membership[i]; 793 } 794 imo->imo_num_memberships -= gap; 795 } 796 } 797 } 798 799 /* 800 * Check for alternatives when higher level complains 801 * about service problems. For now, invalidate cached 802 * routing information. If the route was created dynamically 803 * (by a redirect), time to try a default gateway again. 804 */ 805 void 806 in_losing(struct inpcb *inp) 807 { 808 struct rtentry *rt; 809 struct rt_addrinfo rtinfo; 810 811 if ((rt = inp->inp_route.ro_rt)) { 812 bzero(&rtinfo, sizeof(struct rt_addrinfo)); 813 rtinfo.rti_info[RTAX_DST] = rt_key(rt); 814 rtinfo.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 815 rtinfo.rti_info[RTAX_NETMASK] = rt_mask(rt); 816 rtinfo.rti_flags = rt->rt_flags; 817 rt_missmsg(RTM_LOSING, &rtinfo, rt->rt_flags, 0); 818 if (rt->rt_flags & RTF_DYNAMIC) 819 rtrequest1_global(RTM_DELETE, &rtinfo, NULL, NULL); 820 inp->inp_route.ro_rt = NULL; 821 rtfree(rt); 822 /* 823 * A new route can be allocated 824 * the next time output is attempted. 825 */ 826 } 827 } 828 829 /* 830 * After a routing change, flush old routing 831 * and allocate a (hopefully) better one. 832 */ 833 void 834 in_rtchange(struct inpcb *inp, int err) 835 { 836 if (inp->inp_route.ro_rt) { 837 rtfree(inp->inp_route.ro_rt); 838 inp->inp_route.ro_rt = NULL; 839 /* 840 * A new route can be allocated the next time 841 * output is attempted. 842 */ 843 } 844 } 845 846 /* 847 * Lookup a PCB based on the local address and port. 848 */ 849 struct inpcb * 850 in_pcblookup_local(struct inpcbinfo *pcbinfo, struct in_addr laddr, 851 u_int lport_arg, int wild_okay, struct ucred *cred) 852 { 853 struct inpcb *inp; 854 int matchwild = 3, wildcard; 855 u_short lport = lport_arg; 856 857 struct inpcbporthead *porthash; 858 struct inpcbport *phd; 859 struct inpcb *match = NULL; 860 861 /* 862 * Best fit PCB lookup. 863 * 864 * First see if this local port is in use by looking on the 865 * port hash list. 866 */ 867 porthash = &pcbinfo->porthashbase[INP_PCBPORTHASH(lport, 868 pcbinfo->porthashmask)]; 869 LIST_FOREACH(phd, porthash, phd_hash) { 870 if (phd->phd_port == lport) 871 break; 872 } 873 if (phd != NULL) { 874 /* 875 * Port is in use by one or more PCBs. Look for best 876 * fit. 877 */ 878 LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) { 879 wildcard = 0; 880 #ifdef INET6 881 if ((inp->inp_vflag & INP_IPV4) == 0) 882 continue; 883 #endif 884 if (inp->inp_faddr.s_addr != INADDR_ANY) 885 wildcard++; 886 if (inp->inp_laddr.s_addr != INADDR_ANY) { 887 if (laddr.s_addr == INADDR_ANY) 888 wildcard++; 889 else if (inp->inp_laddr.s_addr != laddr.s_addr) 890 continue; 891 } else { 892 if (laddr.s_addr != INADDR_ANY) 893 wildcard++; 894 } 895 if (wildcard && !wild_okay) 896 continue; 897 if (wildcard < matchwild && 898 (cred == NULL || 899 cred->cr_prison == 900 inp->inp_socket->so_cred->cr_prison)) { 901 match = inp; 902 matchwild = wildcard; 903 if (matchwild == 0) { 904 break; 905 } 906 } 907 } 908 } 909 return (match); 910 } 911 912 /* 913 * Lookup PCB in hash list. 914 */ 915 struct inpcb * 916 in_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in_addr faddr, u_int fport_arg, 917 struct in_addr laddr, u_int lport_arg, boolean_t wildcard, 918 struct ifnet *ifp) 919 { 920 struct inpcbhead *head; 921 struct inpcb *inp, *jinp=NULL; 922 u_short fport = fport_arg, lport = lport_arg; 923 924 /* 925 * First look for an exact match. 926 */ 927 head = &pcbinfo->hashbase[INP_PCBCONNHASH(faddr.s_addr, fport, 928 laddr.s_addr, lport, pcbinfo->hashmask)]; 929 LIST_FOREACH(inp, head, inp_hash) { 930 #ifdef INET6 931 if (!(inp->inp_vflag & INP_IPV4)) 932 continue; 933 #endif 934 if (in_hosteq(inp->inp_faddr, faddr) && 935 in_hosteq(inp->inp_laddr, laddr) && 936 inp->inp_fport == fport && inp->inp_lport == lport) { 937 /* found */ 938 if (inp->inp_socket == NULL || 939 inp->inp_socket->so_cred->cr_prison == NULL) { 940 return (inp); 941 } else { 942 if (jinp == NULL) 943 jinp = inp; 944 } 945 } 946 } 947 if (jinp != NULL) 948 return (jinp); 949 if (wildcard) { 950 struct inpcb *local_wild = NULL; 951 struct inpcb *jinp_wild = NULL; 952 #ifdef INET6 953 struct inpcb *local_wild_mapped = NULL; 954 #endif 955 struct inpcontainer *ic; 956 struct inpcontainerhead *chead; 957 struct sockaddr_in jsin; 958 struct ucred *cred; 959 960 /* 961 * Order of socket selection: 962 * 1. non-jailed, non-wild. 963 * 2. non-jailed, wild. 964 * 3. jailed, non-wild. 965 * 4. jailed, wild. 966 */ 967 jsin.sin_family = AF_INET; 968 chead = &pcbinfo->wildcardhashbase[ 969 INP_PCBWILDCARDHASH(lport, pcbinfo->wildcardhashmask)]; 970 LIST_FOREACH(ic, chead, ic_list) { 971 inp = ic->ic_inp; 972 jsin.sin_addr.s_addr = laddr.s_addr; 973 #ifdef INET6 974 if (!(inp->inp_vflag & INP_IPV4)) 975 continue; 976 #endif 977 if (inp->inp_socket != NULL) 978 cred = inp->inp_socket->so_cred; 979 else 980 cred = NULL; 981 if (cred != NULL && jailed(cred)) { 982 if (jinp != NULL) 983 continue; 984 else 985 if (!jailed_ip(cred->cr_prison, 986 (struct sockaddr *)&jsin)) 987 continue; 988 } 989 if (inp->inp_lport == lport) { 990 if (ifp && ifp->if_type == IFT_FAITH && 991 !(inp->inp_flags & INP_FAITH)) 992 continue; 993 if (inp->inp_laddr.s_addr == laddr.s_addr) { 994 if (cred != NULL && jailed(cred)) 995 jinp = inp; 996 else 997 return (inp); 998 } 999 if (inp->inp_laddr.s_addr == INADDR_ANY) { 1000 #ifdef INET6 1001 if (INP_CHECK_SOCKAF(inp->inp_socket, 1002 AF_INET6)) 1003 local_wild_mapped = inp; 1004 else 1005 #endif 1006 if (cred != NULL && 1007 jailed(cred)) 1008 jinp_wild = inp; 1009 else 1010 local_wild = inp; 1011 } 1012 } 1013 } 1014 if (local_wild != NULL) 1015 return (local_wild); 1016 #ifdef INET6 1017 if (local_wild_mapped != NULL) 1018 return (local_wild_mapped); 1019 #endif 1020 if (jinp != NULL) 1021 return (jinp); 1022 return (jinp_wild); 1023 } 1024 1025 /* 1026 * Not found. 1027 */ 1028 return (NULL); 1029 } 1030 1031 /* 1032 * Insert PCB into connection hash table. 1033 */ 1034 void 1035 in_pcbinsconnhash(struct inpcb *inp) 1036 { 1037 struct inpcbinfo *pcbinfo = inp->inp_cpcbinfo; 1038 struct inpcbhead *bucket; 1039 u_int32_t hashkey_faddr, hashkey_laddr; 1040 1041 #ifdef INET6 1042 if (inp->inp_vflag & INP_IPV6) { 1043 hashkey_faddr = inp->in6p_faddr.s6_addr32[3] /* XXX JH */; 1044 hashkey_laddr = inp->in6p_laddr.s6_addr32[3] /* XXX JH */; 1045 } else { 1046 #endif 1047 hashkey_faddr = inp->inp_faddr.s_addr; 1048 hashkey_laddr = inp->inp_laddr.s_addr; 1049 #ifdef INET6 1050 } 1051 #endif 1052 1053 KASSERT(!(inp->inp_flags & INP_CONNECTED), ("already on hash list")); 1054 inp->inp_flags |= INP_CONNECTED; 1055 1056 /* 1057 * Insert into the connection hash table. 1058 */ 1059 bucket = &pcbinfo->hashbase[INP_PCBCONNHASH(hashkey_faddr, 1060 inp->inp_fport, hashkey_laddr, inp->inp_lport, pcbinfo->hashmask)]; 1061 LIST_INSERT_HEAD(bucket, inp, inp_hash); 1062 } 1063 1064 /* 1065 * Remove PCB from connection hash table. 1066 */ 1067 void 1068 in_pcbremconnhash(struct inpcb *inp) 1069 { 1070 KASSERT(inp->inp_flags & INP_CONNECTED, ("inp not connected")); 1071 LIST_REMOVE(inp, inp_hash); 1072 inp->inp_flags &= ~INP_CONNECTED; 1073 } 1074 1075 /* 1076 * Insert PCB into port hash table. 1077 */ 1078 int 1079 in_pcbinsporthash(struct inpcb *inp) 1080 { 1081 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 1082 struct inpcbporthead *pcbporthash; 1083 struct inpcbport *phd; 1084 1085 /* 1086 * Insert into the port hash table. 1087 */ 1088 pcbporthash = &pcbinfo->porthashbase[ 1089 INP_PCBPORTHASH(inp->inp_lport, pcbinfo->porthashmask)]; 1090 1091 /* Go through port list and look for a head for this lport. */ 1092 LIST_FOREACH(phd, pcbporthash, phd_hash) 1093 if (phd->phd_port == inp->inp_lport) 1094 break; 1095 1096 /* If none exists, malloc one and tack it on. */ 1097 if (phd == NULL) { 1098 MALLOC(phd, struct inpcbport *, sizeof(struct inpcbport), 1099 M_PCB, M_INTWAIT | M_NULLOK); 1100 if (phd == NULL) 1101 return (ENOBUFS); /* XXX */ 1102 phd->phd_port = inp->inp_lport; 1103 LIST_INIT(&phd->phd_pcblist); 1104 LIST_INSERT_HEAD(pcbporthash, phd, phd_hash); 1105 } 1106 1107 inp->inp_phd = phd; 1108 LIST_INSERT_HEAD(&phd->phd_pcblist, inp, inp_portlist); 1109 1110 return (0); 1111 } 1112 1113 void 1114 in_pcbinswildcardhash_oncpu(struct inpcb *inp, struct inpcbinfo *pcbinfo) 1115 { 1116 struct inpcontainer *ic; 1117 struct inpcontainerhead *bucket; 1118 1119 bucket = &pcbinfo->wildcardhashbase[ 1120 INP_PCBWILDCARDHASH(inp->inp_lport, pcbinfo->wildcardhashmask)]; 1121 1122 ic = kmalloc(sizeof(struct inpcontainer), M_TEMP, M_INTWAIT); 1123 ic->ic_inp = inp; 1124 LIST_INSERT_HEAD(bucket, ic, ic_list); 1125 } 1126 1127 /* 1128 * Insert PCB into wildcard hash table. 1129 */ 1130 void 1131 in_pcbinswildcardhash(struct inpcb *inp) 1132 { 1133 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 1134 1135 KKASSERT(pcbinfo != NULL); 1136 1137 in_pcbinswildcardhash_oncpu(inp, pcbinfo); 1138 inp->inp_flags |= INP_WILDCARD; 1139 } 1140 1141 void 1142 in_pcbremwildcardhash_oncpu(struct inpcb *inp, struct inpcbinfo *pcbinfo) 1143 { 1144 struct inpcontainer *ic; 1145 struct inpcontainerhead *head; 1146 1147 /* find bucket */ 1148 head = &pcbinfo->wildcardhashbase[ 1149 INP_PCBWILDCARDHASH(inp->inp_lport, pcbinfo->wildcardhashmask)]; 1150 1151 LIST_FOREACH(ic, head, ic_list) { 1152 if (ic->ic_inp == inp) 1153 goto found; 1154 } 1155 return; /* not found! */ 1156 1157 found: 1158 LIST_REMOVE(ic, ic_list); /* remove container from bucket chain */ 1159 kfree(ic, M_TEMP); /* deallocate container */ 1160 } 1161 1162 /* 1163 * Remove PCB from wildcard hash table. 1164 */ 1165 void 1166 in_pcbremwildcardhash(struct inpcb *inp) 1167 { 1168 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 1169 1170 KASSERT(inp->inp_flags & INP_WILDCARD, ("inp not wildcard")); 1171 in_pcbremwildcardhash_oncpu(inp, pcbinfo); 1172 inp->inp_flags &= ~INP_WILDCARD; 1173 } 1174 1175 /* 1176 * Remove PCB from various lists. 1177 */ 1178 void 1179 in_pcbremlists(struct inpcb *inp) 1180 { 1181 if (inp->inp_lport) { 1182 struct inpcbport *phd = inp->inp_phd; 1183 1184 LIST_REMOVE(inp, inp_portlist); 1185 if (LIST_FIRST(&phd->phd_pcblist) == NULL) { 1186 LIST_REMOVE(phd, phd_hash); 1187 kfree(phd, M_PCB); 1188 } 1189 } 1190 if (inp->inp_flags & INP_WILDCARD) { 1191 in_pcbremwildcardhash(inp); 1192 } else if (inp->inp_flags & INP_CONNECTED) { 1193 in_pcbremconnhash(inp); 1194 } 1195 LIST_REMOVE(inp, inp_list); 1196 inp->inp_pcbinfo->ipi_count--; 1197 } 1198 1199 int 1200 prison_xinpcb(struct thread *td, struct inpcb *inp) 1201 { 1202 struct ucred *cr; 1203 1204 if (td->td_proc == NULL) 1205 return (0); 1206 cr = td->td_proc->p_ucred; 1207 if (cr->cr_prison == NULL) 1208 return (0); 1209 if (inp->inp_socket && inp->inp_socket->so_cred && 1210 inp->inp_socket->so_cred->cr_prison && 1211 cr->cr_prison == inp->inp_socket->so_cred->cr_prison) 1212 return (0); 1213 return (1); 1214 } 1215 1216 int 1217 in_pcblist_global(SYSCTL_HANDLER_ARGS) 1218 { 1219 struct inpcbinfo *pcbinfo = arg1; 1220 struct inpcb *inp, *marker; 1221 struct xinpcb xi; 1222 int error, i, n; 1223 inp_gen_t gencnt; 1224 1225 /* 1226 * The process of preparing the TCB list is too time-consuming and 1227 * resource-intensive to repeat twice on every request. 1228 */ 1229 if (req->oldptr == NULL) { 1230 n = pcbinfo->ipi_count; 1231 req->oldidx = (n + n/8 + 10) * sizeof(struct xinpcb); 1232 return 0; 1233 } 1234 1235 if (req->newptr != NULL) 1236 return EPERM; 1237 1238 /* 1239 * OK, now we're committed to doing something. Re-fetch ipi_count 1240 * after obtaining the generation count. 1241 */ 1242 gencnt = pcbinfo->ipi_gencnt; 1243 n = pcbinfo->ipi_count; 1244 1245 marker = kmalloc(sizeof(struct inpcb), M_TEMP, M_WAITOK|M_ZERO); 1246 marker->inp_flags |= INP_PLACEMARKER; 1247 LIST_INSERT_HEAD(&pcbinfo->pcblisthead, marker, inp_list); 1248 1249 i = 0; 1250 error = 0; 1251 1252 while ((inp = LIST_NEXT(marker, inp_list)) != NULL && i < n) { 1253 LIST_REMOVE(marker, inp_list); 1254 LIST_INSERT_AFTER(inp, marker, inp_list); 1255 1256 if (inp->inp_flags & INP_PLACEMARKER) 1257 continue; 1258 if (inp->inp_gencnt > gencnt) 1259 continue; 1260 if (prison_xinpcb(req->td, inp)) 1261 continue; 1262 bzero(&xi, sizeof xi); 1263 xi.xi_len = sizeof xi; 1264 bcopy(inp, &xi.xi_inp, sizeof *inp); 1265 if (inp->inp_socket) 1266 sotoxsocket(inp->inp_socket, &xi.xi_socket); 1267 if ((error = SYSCTL_OUT(req, &xi, sizeof xi)) != 0) 1268 break; 1269 ++i; 1270 } 1271 LIST_REMOVE(marker, inp_list); 1272 if (error == 0 && i < n) { 1273 bzero(&xi, sizeof xi); 1274 xi.xi_len = sizeof xi; 1275 while (i < n) { 1276 error = SYSCTL_OUT(req, &xi, sizeof xi); 1277 ++i; 1278 } 1279 } 1280 kfree(marker, M_TEMP); 1281 return(error); 1282 } 1283