linux_socket.c revision 193168
1/*- 2 * Copyright (c) 1995 S�ren Schmidt 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: head/sys/compat/linux/linux_socket.c 193168 2009-05-31 12:16:31Z dchagin $"); 31 32/* XXX we use functions that might not exist. */ 33#include "opt_compat.h" 34#include "opt_inet6.h" 35 36#include <sys/param.h> 37#include <sys/proc.h> 38#include <sys/systm.h> 39#include <sys/sysproto.h> 40#include <sys/fcntl.h> 41#include <sys/file.h> 42#include <sys/limits.h> 43#include <sys/lock.h> 44#include <sys/malloc.h> 45#include <sys/mutex.h> 46#include <sys/mbuf.h> 47#include <sys/socket.h> 48#include <sys/socketvar.h> 49#include <sys/syscallsubr.h> 50#include <sys/uio.h> 51#include <sys/syslog.h> 52#include <sys/un.h> 53#include <sys/vimage.h> 54 55#include <net/if.h> 56#include <netinet/in.h> 57#include <netinet/in_systm.h> 58#include <netinet/ip.h> 59#ifdef INET6 60#include <netinet/ip6.h> 61#include <netinet6/ip6_var.h> 62#include <netinet6/in6_var.h> 63#include <netinet6/vinet6.h> 64#endif 65 66#ifdef COMPAT_LINUX32 67#include <machine/../linux32/linux.h> 68#include <machine/../linux32/linux32_proto.h> 69#else 70#include <machine/../linux/linux.h> 71#include <machine/../linux/linux_proto.h> 72#endif 73#include <compat/linux/linux_socket.h> 74#include <compat/linux/linux_util.h> 75 76static int do_sa_get(struct sockaddr **, const struct osockaddr *, int *, 77 struct malloc_type *); 78static int linux_to_bsd_domain(int); 79 80/* 81 * Reads a linux sockaddr and does any necessary translation. 82 * Linux sockaddrs don't have a length field, only a family. 83 */ 84static int 85linux_getsockaddr(struct sockaddr **sap, const struct osockaddr *osa, int len) 86{ 87 int osalen = len; 88 89 return (do_sa_get(sap, osa, &osalen, M_SONAME)); 90} 91 92/* 93 * Copy the osockaddr structure pointed to by osa to kernel, adjust 94 * family and convert to sockaddr. 95 */ 96static int 97do_sa_get(struct sockaddr **sap, const struct osockaddr *osa, int *osalen, 98 struct malloc_type *mtype) 99{ 100 int error=0, bdom; 101 struct sockaddr *sa; 102 struct osockaddr *kosa; 103 int alloclen; 104#ifdef INET6 105 int oldv6size; 106 struct sockaddr_in6 *sin6; 107#endif 108 109 if (*osalen < 2 || *osalen > UCHAR_MAX || !osa) 110 return (EINVAL); 111 112 alloclen = *osalen; 113#ifdef INET6 114 oldv6size = 0; 115 /* 116 * Check for old (pre-RFC2553) sockaddr_in6. We may accept it 117 * if it's a v4-mapped address, so reserve the proper space 118 * for it. 119 */ 120 if (alloclen == sizeof (struct sockaddr_in6) - sizeof (u_int32_t)) { 121 alloclen = sizeof (struct sockaddr_in6); 122 oldv6size = 1; 123 } 124#endif 125 126 kosa = malloc(alloclen, mtype, M_WAITOK); 127 128 if ((error = copyin(osa, kosa, *osalen))) 129 goto out; 130 131 bdom = linux_to_bsd_domain(kosa->sa_family); 132 if (bdom == -1) { 133 error = EINVAL; 134 goto out; 135 } 136 137#ifdef INET6 138 /* 139 * Older Linux IPv6 code uses obsolete RFC2133 struct sockaddr_in6, 140 * which lacks the scope id compared with RFC2553 one. If we detect 141 * the situation, reject the address and write a message to system log. 142 * 143 * Still accept addresses for which the scope id is not used. 144 */ 145 if (oldv6size && bdom == AF_INET6) { 146 sin6 = (struct sockaddr_in6 *)kosa; 147 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr) || 148 (!IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) && 149 !IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) && 150 !IN6_IS_ADDR_V4COMPAT(&sin6->sin6_addr) && 151 !IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 152 !IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))) { 153 sin6->sin6_scope_id = 0; 154 } else { 155 log(LOG_DEBUG, 156 "obsolete pre-RFC2553 sockaddr_in6 rejected\n"); 157 error = EINVAL; 158 goto out; 159 } 160 } else 161#endif 162 if (bdom == AF_INET) 163 alloclen = sizeof(struct sockaddr_in); 164 165 sa = (struct sockaddr *) kosa; 166 sa->sa_family = bdom; 167 sa->sa_len = alloclen; 168 169 *sap = sa; 170 *osalen = alloclen; 171 return (0); 172 173out: 174 free(kosa, mtype); 175 return (error); 176} 177 178static int 179linux_to_bsd_domain(int domain) 180{ 181 182 switch (domain) { 183 case LINUX_AF_UNSPEC: 184 return (AF_UNSPEC); 185 case LINUX_AF_UNIX: 186 return (AF_LOCAL); 187 case LINUX_AF_INET: 188 return (AF_INET); 189 case LINUX_AF_INET6: 190 return (AF_INET6); 191 case LINUX_AF_AX25: 192 return (AF_CCITT); 193 case LINUX_AF_IPX: 194 return (AF_IPX); 195 case LINUX_AF_APPLETALK: 196 return (AF_APPLETALK); 197 } 198 return (-1); 199} 200 201static int 202bsd_to_linux_domain(int domain) 203{ 204 205 switch (domain) { 206 case AF_UNSPEC: 207 return (LINUX_AF_UNSPEC); 208 case AF_LOCAL: 209 return (LINUX_AF_UNIX); 210 case AF_INET: 211 return (LINUX_AF_INET); 212 case AF_INET6: 213 return (LINUX_AF_INET6); 214 case AF_CCITT: 215 return (LINUX_AF_AX25); 216 case AF_IPX: 217 return (LINUX_AF_IPX); 218 case AF_APPLETALK: 219 return (LINUX_AF_APPLETALK); 220 } 221 return (-1); 222} 223 224static int 225linux_to_bsd_sockopt_level(int level) 226{ 227 228 switch (level) { 229 case LINUX_SOL_SOCKET: 230 return (SOL_SOCKET); 231 } 232 return (level); 233} 234 235static int 236bsd_to_linux_sockopt_level(int level) 237{ 238 239 switch (level) { 240 case SOL_SOCKET: 241 return (LINUX_SOL_SOCKET); 242 } 243 return (level); 244} 245 246static int 247linux_to_bsd_ip_sockopt(int opt) 248{ 249 250 switch (opt) { 251 case LINUX_IP_TOS: 252 return (IP_TOS); 253 case LINUX_IP_TTL: 254 return (IP_TTL); 255 case LINUX_IP_OPTIONS: 256 return (IP_OPTIONS); 257 case LINUX_IP_MULTICAST_IF: 258 return (IP_MULTICAST_IF); 259 case LINUX_IP_MULTICAST_TTL: 260 return (IP_MULTICAST_TTL); 261 case LINUX_IP_MULTICAST_LOOP: 262 return (IP_MULTICAST_LOOP); 263 case LINUX_IP_ADD_MEMBERSHIP: 264 return (IP_ADD_MEMBERSHIP); 265 case LINUX_IP_DROP_MEMBERSHIP: 266 return (IP_DROP_MEMBERSHIP); 267 case LINUX_IP_HDRINCL: 268 return (IP_HDRINCL); 269 } 270 return (-1); 271} 272 273static int 274linux_to_bsd_so_sockopt(int opt) 275{ 276 277 switch (opt) { 278 case LINUX_SO_DEBUG: 279 return (SO_DEBUG); 280 case LINUX_SO_REUSEADDR: 281 return (SO_REUSEADDR); 282 case LINUX_SO_TYPE: 283 return (SO_TYPE); 284 case LINUX_SO_ERROR: 285 return (SO_ERROR); 286 case LINUX_SO_DONTROUTE: 287 return (SO_DONTROUTE); 288 case LINUX_SO_BROADCAST: 289 return (SO_BROADCAST); 290 case LINUX_SO_SNDBUF: 291 return (SO_SNDBUF); 292 case LINUX_SO_RCVBUF: 293 return (SO_RCVBUF); 294 case LINUX_SO_KEEPALIVE: 295 return (SO_KEEPALIVE); 296 case LINUX_SO_OOBINLINE: 297 return (SO_OOBINLINE); 298 case LINUX_SO_LINGER: 299 return (SO_LINGER); 300 case LINUX_SO_PEERCRED: 301 return (LOCAL_PEERCRED); 302 case LINUX_SO_RCVLOWAT: 303 return (SO_RCVLOWAT); 304 case LINUX_SO_SNDLOWAT: 305 return (SO_SNDLOWAT); 306 case LINUX_SO_RCVTIMEO: 307 return (SO_RCVTIMEO); 308 case LINUX_SO_SNDTIMEO: 309 return (SO_SNDTIMEO); 310 case LINUX_SO_TIMESTAMP: 311 return (SO_TIMESTAMP); 312 case LINUX_SO_ACCEPTCONN: 313 return (SO_ACCEPTCONN); 314 } 315 return (-1); 316} 317 318static int 319linux_to_bsd_msg_flags(int flags) 320{ 321 int ret_flags = 0; 322 323 if (flags & LINUX_MSG_OOB) 324 ret_flags |= MSG_OOB; 325 if (flags & LINUX_MSG_PEEK) 326 ret_flags |= MSG_PEEK; 327 if (flags & LINUX_MSG_DONTROUTE) 328 ret_flags |= MSG_DONTROUTE; 329 if (flags & LINUX_MSG_CTRUNC) 330 ret_flags |= MSG_CTRUNC; 331 if (flags & LINUX_MSG_TRUNC) 332 ret_flags |= MSG_TRUNC; 333 if (flags & LINUX_MSG_DONTWAIT) 334 ret_flags |= MSG_DONTWAIT; 335 if (flags & LINUX_MSG_EOR) 336 ret_flags |= MSG_EOR; 337 if (flags & LINUX_MSG_WAITALL) 338 ret_flags |= MSG_WAITALL; 339 if (flags & LINUX_MSG_NOSIGNAL) 340 ret_flags |= MSG_NOSIGNAL; 341#if 0 /* not handled */ 342 if (flags & LINUX_MSG_PROXY) 343 ; 344 if (flags & LINUX_MSG_FIN) 345 ; 346 if (flags & LINUX_MSG_SYN) 347 ; 348 if (flags & LINUX_MSG_CONFIRM) 349 ; 350 if (flags & LINUX_MSG_RST) 351 ; 352 if (flags & LINUX_MSG_ERRQUEUE) 353 ; 354#endif 355 return ret_flags; 356} 357 358/* 359* If bsd_to_linux_sockaddr() or linux_to_bsd_sockaddr() faults, then the 360* native syscall will fault. Thus, we don't really need to check the 361* return values for these functions. 362*/ 363 364static int 365bsd_to_linux_sockaddr(struct sockaddr *arg) 366{ 367 struct sockaddr sa; 368 size_t sa_len = sizeof(struct sockaddr); 369 int error; 370 371 if ((error = copyin(arg, &sa, sa_len))) 372 return (error); 373 374 *(u_short *)&sa = sa.sa_family; 375 376 error = copyout(&sa, arg, sa_len); 377 378 return (error); 379} 380 381static int 382linux_to_bsd_sockaddr(struct sockaddr *arg, int len) 383{ 384 struct sockaddr sa; 385 size_t sa_len = sizeof(struct sockaddr); 386 int error; 387 388 if ((error = copyin(arg, &sa, sa_len))) 389 return (error); 390 391 sa.sa_family = *(sa_family_t *)&sa; 392 sa.sa_len = len; 393 394 error = copyout(&sa, arg, sa_len); 395 396 return (error); 397} 398 399 400static int 401linux_sa_put(struct osockaddr *osa) 402{ 403 struct osockaddr sa; 404 int error, bdom; 405 406 /* 407 * Only read/write the osockaddr family part, the rest is 408 * not changed. 409 */ 410 error = copyin(osa, &sa, sizeof(sa.sa_family)); 411 if (error) 412 return (error); 413 414 bdom = bsd_to_linux_domain(sa.sa_family); 415 if (bdom == -1) 416 return (EINVAL); 417 418 sa.sa_family = bdom; 419 error = copyout(&sa, osa, sizeof(sa.sa_family)); 420 if (error) 421 return (error); 422 423 return (0); 424} 425 426static int 427linux_to_bsd_cmsg_type(int cmsg_type) 428{ 429 430 switch (cmsg_type) { 431 case LINUX_SCM_RIGHTS: 432 return (SCM_RIGHTS); 433 } 434 return (-1); 435} 436 437static int 438bsd_to_linux_cmsg_type(int cmsg_type) 439{ 440 441 switch (cmsg_type) { 442 case SCM_RIGHTS: 443 return (LINUX_SCM_RIGHTS); 444 } 445 return (-1); 446} 447 448static int 449linux_to_bsd_msghdr(struct msghdr *bhdr, const struct l_msghdr *lhdr) 450{ 451 if (lhdr->msg_controllen > INT_MAX) 452 return (ENOBUFS); 453 454 bhdr->msg_name = PTRIN(lhdr->msg_name); 455 bhdr->msg_namelen = lhdr->msg_namelen; 456 bhdr->msg_iov = PTRIN(lhdr->msg_iov); 457 bhdr->msg_iovlen = lhdr->msg_iovlen; 458 bhdr->msg_control = PTRIN(lhdr->msg_control); 459 bhdr->msg_controllen = lhdr->msg_controllen; 460 bhdr->msg_flags = linux_to_bsd_msg_flags(lhdr->msg_flags); 461 return (0); 462} 463 464static int 465bsd_to_linux_msghdr(const struct msghdr *bhdr, struct l_msghdr *lhdr) 466{ 467 lhdr->msg_name = PTROUT(bhdr->msg_name); 468 lhdr->msg_namelen = bhdr->msg_namelen; 469 lhdr->msg_iov = PTROUT(bhdr->msg_iov); 470 lhdr->msg_iovlen = bhdr->msg_iovlen; 471 lhdr->msg_control = PTROUT(bhdr->msg_control); 472 lhdr->msg_controllen = bhdr->msg_controllen; 473 /* msg_flags skipped */ 474 return (0); 475} 476 477static int 478linux_set_socket_flags(struct thread *td, int s, int flags) 479{ 480 int error; 481 482 if (flags & LINUX_SOCK_NONBLOCK) { 483 error = kern_fcntl(td, s, F_SETFL, O_NONBLOCK); 484 if (error) 485 return (error); 486 } 487 if (flags & LINUX_SOCK_CLOEXEC) { 488 error = kern_fcntl(td, s, F_SETFD, FD_CLOEXEC); 489 if (error) 490 return (error); 491 } 492 return (0); 493} 494 495static int 496linux_sendit(struct thread *td, int s, struct msghdr *mp, int flags, 497 struct mbuf *control, enum uio_seg segflg) 498{ 499 struct sockaddr *to; 500 int error; 501 502 if (mp->msg_name != NULL) { 503 error = linux_getsockaddr(&to, mp->msg_name, mp->msg_namelen); 504 if (error) 505 return (error); 506 mp->msg_name = to; 507 } else 508 to = NULL; 509 510 error = kern_sendit(td, s, mp, linux_to_bsd_msg_flags(flags), control, 511 segflg); 512 513 if (to) 514 free(to, M_SONAME); 515 return (error); 516} 517 518/* Return 0 if IP_HDRINCL is set for the given socket. */ 519static int 520linux_check_hdrincl(struct thread *td, int s) 521{ 522 int error, optval, size_val; 523 524 size_val = sizeof(optval); 525 error = kern_getsockopt(td, s, IPPROTO_IP, IP_HDRINCL, 526 &optval, UIO_SYSSPACE, &size_val); 527 if (error) 528 return (error); 529 530 return (optval == 0); 531} 532 533struct linux_sendto_args { 534 int s; 535 l_uintptr_t msg; 536 int len; 537 int flags; 538 l_uintptr_t to; 539 int tolen; 540}; 541 542/* 543 * Updated sendto() when IP_HDRINCL is set: 544 * tweak endian-dependent fields in the IP packet. 545 */ 546static int 547linux_sendto_hdrincl(struct thread *td, struct linux_sendto_args *linux_args) 548{ 549/* 550 * linux_ip_copysize defines how many bytes we should copy 551 * from the beginning of the IP packet before we customize it for BSD. 552 * It should include all the fields we modify (ip_len and ip_off). 553 */ 554#define linux_ip_copysize 8 555 556 struct ip *packet; 557 struct msghdr msg; 558 struct iovec aiov[1]; 559 int error; 560 561 /* Check that the packet isn't too big or too small. */ 562 if (linux_args->len < linux_ip_copysize || 563 linux_args->len > IP_MAXPACKET) 564 return (EINVAL); 565 566 packet = (struct ip *)malloc(linux_args->len, M_TEMP, M_WAITOK); 567 568 /* Make kernel copy of the packet to be sent */ 569 if ((error = copyin(PTRIN(linux_args->msg), packet, 570 linux_args->len))) 571 goto goout; 572 573 /* Convert fields from Linux to BSD raw IP socket format */ 574 packet->ip_len = linux_args->len; 575 packet->ip_off = ntohs(packet->ip_off); 576 577 /* Prepare the msghdr and iovec structures describing the new packet */ 578 msg.msg_name = PTRIN(linux_args->to); 579 msg.msg_namelen = linux_args->tolen; 580 msg.msg_iov = aiov; 581 msg.msg_iovlen = 1; 582 msg.msg_control = NULL; 583 msg.msg_flags = 0; 584 aiov[0].iov_base = (char *)packet; 585 aiov[0].iov_len = linux_args->len; 586 error = linux_sendit(td, linux_args->s, &msg, linux_args->flags, 587 NULL, UIO_SYSSPACE); 588goout: 589 free(packet, M_TEMP); 590 return (error); 591} 592 593struct linux_socket_args { 594 int domain; 595 int type; 596 int protocol; 597}; 598 599static int 600linux_socket(struct thread *td, struct linux_socket_args *args) 601{ 602#ifdef INET6 603#ifndef KLD_MODULE 604 INIT_VNET_INET6(curvnet); 605#endif 606#endif 607 struct socket_args /* { 608 int domain; 609 int type; 610 int protocol; 611 } */ bsd_args; 612 int retval_socket, socket_flags; 613 614 bsd_args.protocol = args->protocol; 615 socket_flags = args->type & ~LINUX_SOCK_TYPE_MASK; 616 if (socket_flags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK)) 617 return (EINVAL); 618 bsd_args.type = args->type & LINUX_SOCK_TYPE_MASK; 619 if (bsd_args.type < 0 || bsd_args.type > LINUX_SOCK_MAX) 620 return (EINVAL); 621 bsd_args.domain = linux_to_bsd_domain(args->domain); 622 if (bsd_args.domain == -1) 623 return (EAFNOSUPPORT); 624 625 retval_socket = socket(td, &bsd_args); 626 if (retval_socket) 627 return (retval_socket); 628 629 retval_socket = linux_set_socket_flags(td, td->td_retval[0], 630 socket_flags); 631 if (retval_socket) { 632 (void)kern_close(td, td->td_retval[0]); 633 goto out; 634 } 635 636 if (bsd_args.type == SOCK_RAW 637 && (bsd_args.protocol == IPPROTO_RAW || bsd_args.protocol == 0) 638 && bsd_args.domain == PF_INET) { 639 /* It's a raw IP socket: set the IP_HDRINCL option. */ 640 int hdrincl; 641 642 hdrincl = 1; 643 /* We ignore any error returned by kern_setsockopt() */ 644 kern_setsockopt(td, td->td_retval[0], IPPROTO_IP, IP_HDRINCL, 645 &hdrincl, UIO_SYSSPACE, sizeof(hdrincl)); 646 } 647#ifdef INET6 648 /* 649 * Linux AF_INET6 socket has IPV6_V6ONLY setsockopt set to 0 by 650 * default and some apps depend on this. So, set V6ONLY to 0 651 * for Linux apps if the sysctl value is set to 1. 652 */ 653 if (bsd_args.domain == PF_INET6 654#ifndef KLD_MODULE 655 /* 656 * XXX: Avoid undefined symbol error with an IPv4 only 657 * kernel. 658 */ 659 && V_ip6_v6only 660#endif 661 ) { 662 int v6only; 663 664 v6only = 0; 665 /* We ignore any error returned by setsockopt() */ 666 kern_setsockopt(td, td->td_retval[0], IPPROTO_IPV6, IPV6_V6ONLY, 667 &v6only, UIO_SYSSPACE, sizeof(v6only)); 668 } 669#endif 670 671out: 672 return (retval_socket); 673} 674 675struct linux_bind_args { 676 int s; 677 l_uintptr_t name; 678 int namelen; 679}; 680 681static int 682linux_bind(struct thread *td, struct linux_bind_args *args) 683{ 684 struct sockaddr *sa; 685 int error; 686 687 error = linux_getsockaddr(&sa, PTRIN(args->name), 688 args->namelen); 689 if (error) 690 return (error); 691 692 error = kern_bind(td, args->s, sa); 693 free(sa, M_SONAME); 694 if (error == EADDRNOTAVAIL && args->namelen != sizeof(struct sockaddr_in)) 695 return (EINVAL); 696 return (error); 697} 698 699struct linux_connect_args { 700 int s; 701 l_uintptr_t name; 702 int namelen; 703}; 704int linux_connect(struct thread *, struct linux_connect_args *); 705 706int 707linux_connect(struct thread *td, struct linux_connect_args *args) 708{ 709 struct socket *so; 710 struct sockaddr *sa; 711 u_int fflag; 712 int error; 713 714 error = linux_getsockaddr(&sa, (struct osockaddr *)PTRIN(args->name), 715 args->namelen); 716 if (error) 717 return (error); 718 719 error = kern_connect(td, args->s, sa); 720 free(sa, M_SONAME); 721 if (error != EISCONN) 722 return (error); 723 724 /* 725 * Linux doesn't return EISCONN the first time it occurs, 726 * when on a non-blocking socket. Instead it returns the 727 * error getsockopt(SOL_SOCKET, SO_ERROR) would return on BSD. 728 * 729 * XXXRW: Instead of using fgetsock(), check that it is a 730 * socket and use the file descriptor reference instead of 731 * creating a new one. 732 */ 733 error = fgetsock(td, args->s, &so, &fflag); 734 if (error == 0) { 735 error = EISCONN; 736 if (fflag & FNONBLOCK) { 737 SOCK_LOCK(so); 738 if (so->so_emuldata == 0) 739 error = so->so_error; 740 so->so_emuldata = (void *)1; 741 SOCK_UNLOCK(so); 742 } 743 fputsock(so); 744 } 745 return (error); 746} 747 748struct linux_listen_args { 749 int s; 750 int backlog; 751}; 752 753static int 754linux_listen(struct thread *td, struct linux_listen_args *args) 755{ 756 struct listen_args /* { 757 int s; 758 int backlog; 759 } */ bsd_args; 760 761 bsd_args.s = args->s; 762 bsd_args.backlog = args->backlog; 763 return (listen(td, &bsd_args)); 764} 765 766struct linux_accept_args { 767 int s; 768 l_uintptr_t addr; 769 l_uintptr_t namelen; 770}; 771 772static int 773linux_accept(struct thread *td, struct linux_accept_args *args) 774{ 775 struct accept_args /* { 776 int s; 777 struct sockaddr * __restrict name; 778 socklen_t * __restrict anamelen; 779 } */ bsd_args; 780 int error, fd; 781 782 bsd_args.s = args->s; 783 /* XXX: */ 784 bsd_args.name = (struct sockaddr * __restrict)PTRIN(args->addr); 785 bsd_args.anamelen = PTRIN(args->namelen);/* XXX */ 786 error = accept(td, &bsd_args); 787 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.name); 788 if (error) { 789 if (error == EFAULT && args->namelen != sizeof(struct sockaddr_in)) 790 return (EINVAL); 791 return (error); 792 } 793 if (args->addr) { 794 error = linux_sa_put(PTRIN(args->addr)); 795 if (error) { 796 (void)kern_close(td, td->td_retval[0]); 797 return (error); 798 } 799 } 800 801 /* 802 * linux appears not to copy flags from the parent socket to the 803 * accepted one, so we must clear the flags in the new descriptor. 804 * Ignore any errors, because we already have an open fd. 805 */ 806 fd = td->td_retval[0]; 807 (void)kern_fcntl(td, fd, F_SETFL, 0); 808 td->td_retval[0] = fd; 809 return (0); 810} 811 812struct linux_getsockname_args { 813 int s; 814 l_uintptr_t addr; 815 l_uintptr_t namelen; 816}; 817 818static int 819linux_getsockname(struct thread *td, struct linux_getsockname_args *args) 820{ 821 struct getsockname_args /* { 822 int fdes; 823 struct sockaddr * __restrict asa; 824 socklen_t * __restrict alen; 825 } */ bsd_args; 826 int error; 827 828 bsd_args.fdes = args->s; 829 /* XXX: */ 830 bsd_args.asa = (struct sockaddr * __restrict)PTRIN(args->addr); 831 bsd_args.alen = PTRIN(args->namelen); /* XXX */ 832 error = getsockname(td, &bsd_args); 833 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.asa); 834 if (error) 835 return (error); 836 error = linux_sa_put(PTRIN(args->addr)); 837 if (error) 838 return (error); 839 return (0); 840} 841 842struct linux_getpeername_args { 843 int s; 844 l_uintptr_t addr; 845 l_uintptr_t namelen; 846}; 847 848static int 849linux_getpeername(struct thread *td, struct linux_getpeername_args *args) 850{ 851 struct getpeername_args /* { 852 int fdes; 853 caddr_t asa; 854 int *alen; 855 } */ bsd_args; 856 int error; 857 858 bsd_args.fdes = args->s; 859 bsd_args.asa = (struct sockaddr *)PTRIN(args->addr); 860 bsd_args.alen = (int *)PTRIN(args->namelen); 861 error = getpeername(td, &bsd_args); 862 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.asa); 863 if (error) 864 return (error); 865 error = linux_sa_put(PTRIN(args->addr)); 866 if (error) 867 return (error); 868 return (0); 869} 870 871struct linux_socketpair_args { 872 int domain; 873 int type; 874 int protocol; 875 l_uintptr_t rsv; 876}; 877 878static int 879linux_socketpair(struct thread *td, struct linux_socketpair_args *args) 880{ 881 struct socketpair_args /* { 882 int domain; 883 int type; 884 int protocol; 885 int *rsv; 886 } */ bsd_args; 887 int error, socket_flags; 888 int sv[2]; 889 890 bsd_args.domain = linux_to_bsd_domain(args->domain); 891 if (bsd_args.domain != PF_LOCAL) 892 return (EAFNOSUPPORT); 893 894 socket_flags = args->type & ~LINUX_SOCK_TYPE_MASK; 895 if (socket_flags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK)) 896 return (EINVAL); 897 bsd_args.type = args->type & LINUX_SOCK_TYPE_MASK; 898 if (bsd_args.type < 0 || bsd_args.type > LINUX_SOCK_MAX) 899 return (EINVAL); 900 901 if (args->protocol != 0 && args->protocol != PF_UNIX) 902 903 /* 904 * Use of PF_UNIX as protocol argument is not right, 905 * but Linux does it. 906 * Do not map PF_UNIX as its Linux value is identical 907 * to FreeBSD one. 908 */ 909 return (EPROTONOSUPPORT); 910 else 911 bsd_args.protocol = 0; 912 bsd_args.rsv = (int *)PTRIN(args->rsv); 913 error = kern_socketpair(td, bsd_args.domain, bsd_args.type, 914 bsd_args.protocol, sv); 915 if (error) 916 return (error); 917 error = linux_set_socket_flags(td, sv[0], socket_flags); 918 if (error) 919 goto out; 920 error = linux_set_socket_flags(td, sv[1], socket_flags); 921 if (error) 922 goto out; 923 924 error = copyout(sv, bsd_args.rsv, 2 * sizeof(int)); 925 926out: 927 if (error) { 928 (void)kern_close(td, sv[0]); 929 (void)kern_close(td, sv[1]); 930 } 931 return (error); 932} 933 934struct linux_send_args { 935 int s; 936 l_uintptr_t msg; 937 int len; 938 int flags; 939}; 940 941static int 942linux_send(struct thread *td, struct linux_send_args *args) 943{ 944 struct sendto_args /* { 945 int s; 946 caddr_t buf; 947 int len; 948 int flags; 949 caddr_t to; 950 int tolen; 951 } */ bsd_args; 952 953 bsd_args.s = args->s; 954 bsd_args.buf = (caddr_t)PTRIN(args->msg); 955 bsd_args.len = args->len; 956 bsd_args.flags = args->flags; 957 bsd_args.to = NULL; 958 bsd_args.tolen = 0; 959 return sendto(td, &bsd_args); 960} 961 962struct linux_recv_args { 963 int s; 964 l_uintptr_t msg; 965 int len; 966 int flags; 967}; 968 969static int 970linux_recv(struct thread *td, struct linux_recv_args *args) 971{ 972 struct recvfrom_args /* { 973 int s; 974 caddr_t buf; 975 int len; 976 int flags; 977 struct sockaddr *from; 978 socklen_t fromlenaddr; 979 } */ bsd_args; 980 981 bsd_args.s = args->s; 982 bsd_args.buf = (caddr_t)PTRIN(args->msg); 983 bsd_args.len = args->len; 984 bsd_args.flags = linux_to_bsd_msg_flags(args->flags); 985 bsd_args.from = NULL; 986 bsd_args.fromlenaddr = 0; 987 return (recvfrom(td, &bsd_args)); 988} 989 990static int 991linux_sendto(struct thread *td, struct linux_sendto_args *args) 992{ 993 struct msghdr msg; 994 struct iovec aiov; 995 int error; 996 997 if (linux_check_hdrincl(td, args->s) == 0) 998 /* IP_HDRINCL set, tweak the packet before sending */ 999 return (linux_sendto_hdrincl(td, args)); 1000 1001 msg.msg_name = PTRIN(args->to); 1002 msg.msg_namelen = args->tolen; 1003 msg.msg_iov = &aiov; 1004 msg.msg_iovlen = 1; 1005 msg.msg_control = NULL; 1006 msg.msg_flags = 0; 1007 aiov.iov_base = PTRIN(args->msg); 1008 aiov.iov_len = args->len; 1009 error = linux_sendit(td, args->s, &msg, args->flags, NULL, 1010 UIO_USERSPACE); 1011 return (error); 1012} 1013 1014struct linux_recvfrom_args { 1015 int s; 1016 l_uintptr_t buf; 1017 int len; 1018 int flags; 1019 l_uintptr_t from; 1020 l_uintptr_t fromlen; 1021}; 1022 1023static int 1024linux_recvfrom(struct thread *td, struct linux_recvfrom_args *args) 1025{ 1026 struct recvfrom_args /* { 1027 int s; 1028 caddr_t buf; 1029 size_t len; 1030 int flags; 1031 struct sockaddr * __restrict from; 1032 socklen_t * __restrict fromlenaddr; 1033 } */ bsd_args; 1034 size_t len; 1035 int error; 1036 1037 if ((error = copyin(PTRIN(args->fromlen), &len, sizeof(size_t)))) 1038 return (error); 1039 1040 bsd_args.s = args->s; 1041 bsd_args.buf = PTRIN(args->buf); 1042 bsd_args.len = args->len; 1043 bsd_args.flags = linux_to_bsd_msg_flags(args->flags); 1044 /* XXX: */ 1045 bsd_args.from = (struct sockaddr * __restrict)PTRIN(args->from); 1046 bsd_args.fromlenaddr = PTRIN(args->fromlen);/* XXX */ 1047 1048 linux_to_bsd_sockaddr((struct sockaddr *)bsd_args.from, len); 1049 error = recvfrom(td, &bsd_args); 1050 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.from); 1051 1052 if (error) 1053 return (error); 1054 if (args->from) { 1055 error = linux_sa_put((struct osockaddr *) 1056 PTRIN(args->from)); 1057 if (error) 1058 return (error); 1059 } 1060 return (0); 1061} 1062 1063struct linux_sendmsg_args { 1064 int s; 1065 l_uintptr_t msg; 1066 int flags; 1067}; 1068 1069static int 1070linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args) 1071{ 1072 struct cmsghdr *cmsg; 1073 struct mbuf *control; 1074 struct msghdr msg; 1075 struct l_cmsghdr linux_cmsg; 1076 struct l_cmsghdr *ptr_cmsg; 1077 struct l_msghdr linux_msg; 1078 struct iovec *iov; 1079 socklen_t datalen; 1080 void *data; 1081 int error; 1082 1083 error = copyin(PTRIN(args->msg), &linux_msg, sizeof(linux_msg)); 1084 if (error) 1085 return (error); 1086 error = linux_to_bsd_msghdr(&msg, &linux_msg); 1087 if (error) 1088 return (error); 1089 1090 /* 1091 * Some Linux applications (ping) define a non-NULL control data 1092 * pointer, but a msg_controllen of 0, which is not allowed in the 1093 * FreeBSD system call interface. NULL the msg_control pointer in 1094 * order to handle this case. This should be checked, but allows the 1095 * Linux ping to work. 1096 */ 1097 if (msg.msg_control != NULL && msg.msg_controllen == 0) 1098 msg.msg_control = NULL; 1099 1100#ifdef COMPAT_LINUX32 1101 error = linux32_copyiniov(PTRIN(msg.msg_iov), msg.msg_iovlen, 1102 &iov, EMSGSIZE); 1103#else 1104 error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE); 1105#endif 1106 if (error) 1107 return (error); 1108 1109 if (msg.msg_control != NULL) { 1110 error = ENOBUFS; 1111 cmsg = malloc(CMSG_HDRSZ, M_TEMP, M_WAITOK | M_ZERO); 1112 control = m_get(M_WAIT, MT_CONTROL); 1113 if (control == NULL) 1114 goto bad; 1115 ptr_cmsg = LINUX_CMSG_FIRSTHDR(&msg); 1116 1117 do { 1118 error = copyin(ptr_cmsg, &linux_cmsg, 1119 sizeof(struct l_cmsghdr)); 1120 if (error) 1121 goto bad; 1122 1123 error = EINVAL; 1124 if (linux_cmsg.cmsg_len < sizeof(struct l_cmsghdr)) 1125 goto bad; 1126 1127 /* 1128 * Now we support only SCM_RIGHTS, so return EINVAL 1129 * in any other cmsg_type 1130 */ 1131 if ((cmsg->cmsg_type = 1132 linux_to_bsd_cmsg_type(linux_cmsg.cmsg_type)) == -1) 1133 goto bad; 1134 cmsg->cmsg_level = 1135 linux_to_bsd_sockopt_level(linux_cmsg.cmsg_level); 1136 1137 datalen = linux_cmsg.cmsg_len - L_CMSG_HDRSZ; 1138 cmsg->cmsg_len = CMSG_LEN(datalen); 1139 data = LINUX_CMSG_DATA(ptr_cmsg); 1140 1141 error = ENOBUFS; 1142 if (!m_append(control, CMSG_HDRSZ, (c_caddr_t) cmsg)) 1143 goto bad; 1144 if (!m_append(control, datalen, (c_caddr_t) data)) 1145 goto bad; 1146 } while ((ptr_cmsg = LINUX_CMSG_NXTHDR(&msg, ptr_cmsg))); 1147 } else { 1148 control = NULL; 1149 cmsg = NULL; 1150 } 1151 1152 msg.msg_iov = iov; 1153 msg.msg_flags = 0; 1154 error = linux_sendit(td, args->s, &msg, args->flags, control, 1155 UIO_USERSPACE); 1156 1157bad: 1158 free(iov, M_IOV); 1159 if (cmsg) 1160 free(cmsg, M_TEMP); 1161 return (error); 1162} 1163 1164struct linux_recvmsg_args { 1165 int s; 1166 l_uintptr_t msg; 1167 int flags; 1168}; 1169 1170static int 1171linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args) 1172{ 1173 struct cmsghdr *cm; 1174 struct msghdr msg; 1175 struct l_cmsghdr *linux_cmsg = NULL; 1176 socklen_t datalen, outlen, clen; 1177 struct l_msghdr linux_msg; 1178 struct iovec *iov, *uiov; 1179 struct mbuf *control = NULL; 1180 struct mbuf **controlp; 1181 caddr_t outbuf; 1182 void *data; 1183 int error, i, fd, fds, *fdp; 1184 1185 error = copyin(PTRIN(args->msg), &linux_msg, sizeof(linux_msg)); 1186 if (error) 1187 return (error); 1188 1189 error = linux_to_bsd_msghdr(&msg, &linux_msg); 1190 if (error) 1191 return (error); 1192 1193#ifdef COMPAT_LINUX32 1194 error = linux32_copyiniov(PTRIN(msg.msg_iov), msg.msg_iovlen, 1195 &iov, EMSGSIZE); 1196#else 1197 error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE); 1198#endif 1199 if (error) 1200 return (error); 1201 1202 if (msg.msg_name) { 1203 error = linux_to_bsd_sockaddr((struct sockaddr *)msg.msg_name, 1204 msg.msg_namelen); 1205 if (error) 1206 goto bad; 1207 } 1208 1209 uiov = msg.msg_iov; 1210 msg.msg_iov = iov; 1211 controlp = (msg.msg_control != NULL) ? &control : NULL; 1212 error = kern_recvit(td, args->s, &msg, UIO_USERSPACE, controlp); 1213 msg.msg_iov = uiov; 1214 if (error) 1215 goto bad; 1216 1217 error = bsd_to_linux_msghdr(&msg, &linux_msg); 1218 if (error) 1219 goto bad; 1220 1221 if (linux_msg.msg_name) { 1222 error = bsd_to_linux_sockaddr((struct sockaddr *) 1223 PTRIN(linux_msg.msg_name)); 1224 if (error) 1225 goto bad; 1226 } 1227 if (linux_msg.msg_name && linux_msg.msg_namelen > 2) { 1228 error = linux_sa_put(PTRIN(linux_msg.msg_name)); 1229 if (error) 1230 goto bad; 1231 } 1232 1233 if (control) { 1234 1235 linux_cmsg = malloc(L_CMSG_HDRSZ, M_TEMP, M_WAITOK | M_ZERO); 1236 outbuf = PTRIN(linux_msg.msg_control); 1237 cm = mtod(control, struct cmsghdr *); 1238 outlen = 0; 1239 clen = control->m_len; 1240 1241 while (cm != NULL) { 1242 1243 if ((linux_cmsg->cmsg_type = 1244 bsd_to_linux_cmsg_type(cm->cmsg_type)) == -1) 1245 { 1246 error = EINVAL; 1247 goto bad; 1248 } 1249 data = CMSG_DATA(cm); 1250 datalen = (caddr_t)cm + cm->cmsg_len - (caddr_t)data; 1251 1252 switch (linux_cmsg->cmsg_type) 1253 { 1254 case LINUX_SCM_RIGHTS: 1255 if (outlen + LINUX_CMSG_LEN(datalen) > 1256 linux_msg.msg_controllen) { 1257 if (outlen == 0) { 1258 error = EMSGSIZE; 1259 goto bad; 1260 } else { 1261 linux_msg.msg_flags |= 1262 LINUX_MSG_CTRUNC; 1263 goto out; 1264 } 1265 } 1266 if (args->flags & LINUX_MSG_CMSG_CLOEXEC) { 1267 fds = datalen / sizeof(int); 1268 fdp = data; 1269 for (i = 0; i < fds; i++) { 1270 fd = *fdp++; 1271 (void)kern_fcntl(td, fd, 1272 F_SETFD, FD_CLOEXEC); 1273 } 1274 } 1275 break; 1276 } 1277 1278 linux_cmsg->cmsg_len = LINUX_CMSG_LEN(datalen); 1279 linux_cmsg->cmsg_level = 1280 bsd_to_linux_sockopt_level(cm->cmsg_level); 1281 1282 error = copyout(linux_cmsg, outbuf, L_CMSG_HDRSZ); 1283 if (error) 1284 goto bad; 1285 outbuf += L_CMSG_HDRSZ; 1286 1287 error = copyout(data, outbuf, datalen); 1288 if (error) 1289 goto bad; 1290 1291 outbuf += LINUX_CMSG_ALIGN(datalen); 1292 outlen += LINUX_CMSG_LEN(datalen); 1293 linux_msg.msg_controllen = outlen; 1294 1295 if (CMSG_SPACE(datalen) < clen) { 1296 clen -= CMSG_SPACE(datalen); 1297 cm = (struct cmsghdr *) 1298 ((caddr_t)cm + CMSG_SPACE(datalen)); 1299 } else 1300 cm = NULL; 1301 } 1302 } 1303 1304out: 1305 error = copyout(&linux_msg, PTRIN(args->msg), sizeof(linux_msg)); 1306 1307bad: 1308 free(iov, M_IOV); 1309 if (control != NULL) 1310 m_freem(control); 1311 if (linux_cmsg != NULL) 1312 free(linux_cmsg, M_TEMP); 1313 1314 return (error); 1315} 1316 1317struct linux_shutdown_args { 1318 int s; 1319 int how; 1320}; 1321 1322static int 1323linux_shutdown(struct thread *td, struct linux_shutdown_args *args) 1324{ 1325 struct shutdown_args /* { 1326 int s; 1327 int how; 1328 } */ bsd_args; 1329 1330 bsd_args.s = args->s; 1331 bsd_args.how = args->how; 1332 return (shutdown(td, &bsd_args)); 1333} 1334 1335struct linux_setsockopt_args { 1336 int s; 1337 int level; 1338 int optname; 1339 l_uintptr_t optval; 1340 int optlen; 1341}; 1342 1343static int 1344linux_setsockopt(struct thread *td, struct linux_setsockopt_args *args) 1345{ 1346 struct setsockopt_args /* { 1347 int s; 1348 int level; 1349 int name; 1350 caddr_t val; 1351 int valsize; 1352 } */ bsd_args; 1353 l_timeval linux_tv; 1354 struct timeval tv; 1355 int error, name; 1356 1357 bsd_args.s = args->s; 1358 bsd_args.level = linux_to_bsd_sockopt_level(args->level); 1359 switch (bsd_args.level) { 1360 case SOL_SOCKET: 1361 name = linux_to_bsd_so_sockopt(args->optname); 1362 switch (name) { 1363 case SO_RCVTIMEO: 1364 /* FALLTHROUGH */ 1365 case SO_SNDTIMEO: 1366 error = copyin(PTRIN(args->optval), &linux_tv, 1367 sizeof(linux_tv)); 1368 if (error) 1369 return (error); 1370 tv.tv_sec = linux_tv.tv_sec; 1371 tv.tv_usec = linux_tv.tv_usec; 1372 return (kern_setsockopt(td, args->s, bsd_args.level, 1373 name, &tv, UIO_SYSSPACE, sizeof(tv))); 1374 /* NOTREACHED */ 1375 break; 1376 default: 1377 break; 1378 } 1379 break; 1380 case IPPROTO_IP: 1381 name = linux_to_bsd_ip_sockopt(args->optname); 1382 break; 1383 case IPPROTO_TCP: 1384 /* Linux TCP option values match BSD's */ 1385 name = args->optname; 1386 break; 1387 default: 1388 name = -1; 1389 break; 1390 } 1391 if (name == -1) 1392 return (ENOPROTOOPT); 1393 1394 bsd_args.name = name; 1395 bsd_args.val = PTRIN(args->optval); 1396 bsd_args.valsize = args->optlen; 1397 1398 if (name == IPV6_NEXTHOP) { 1399 linux_to_bsd_sockaddr((struct sockaddr *)bsd_args.val, 1400 bsd_args.valsize); 1401 error = setsockopt(td, &bsd_args); 1402 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.val); 1403 } else 1404 error = setsockopt(td, &bsd_args); 1405 1406 return (error); 1407} 1408 1409struct linux_getsockopt_args { 1410 int s; 1411 int level; 1412 int optname; 1413 l_uintptr_t optval; 1414 l_uintptr_t optlen; 1415}; 1416 1417static int 1418linux_getsockopt(struct thread *td, struct linux_getsockopt_args *args) 1419{ 1420 struct getsockopt_args /* { 1421 int s; 1422 int level; 1423 int name; 1424 caddr_t val; 1425 int *avalsize; 1426 } */ bsd_args; 1427 l_timeval linux_tv; 1428 struct timeval tv; 1429 socklen_t tv_len, xulen; 1430 struct xucred xu; 1431 struct l_ucred lxu; 1432 int error, name; 1433 1434 bsd_args.s = args->s; 1435 bsd_args.level = linux_to_bsd_sockopt_level(args->level); 1436 switch (bsd_args.level) { 1437 case SOL_SOCKET: 1438 name = linux_to_bsd_so_sockopt(args->optname); 1439 switch (name) { 1440 case SO_RCVTIMEO: 1441 /* FALLTHROUGH */ 1442 case SO_SNDTIMEO: 1443 tv_len = sizeof(tv); 1444 error = kern_getsockopt(td, args->s, bsd_args.level, 1445 name, &tv, UIO_SYSSPACE, &tv_len); 1446 if (error) 1447 return (error); 1448 linux_tv.tv_sec = tv.tv_sec; 1449 linux_tv.tv_usec = tv.tv_usec; 1450 return (copyout(&linux_tv, PTRIN(args->optval), 1451 sizeof(linux_tv))); 1452 /* NOTREACHED */ 1453 break; 1454 case LOCAL_PEERCRED: 1455 if (args->optlen != sizeof(lxu)) 1456 return (EINVAL); 1457 xulen = sizeof(xu); 1458 error = kern_getsockopt(td, args->s, bsd_args.level, 1459 name, &xu, UIO_SYSSPACE, &xulen); 1460 if (error) 1461 return (error); 1462 /* 1463 * XXX Use 0 for pid as the FreeBSD does not cache peer pid. 1464 */ 1465 lxu.pid = 0; 1466 lxu.uid = xu.cr_uid; 1467 lxu.gid = xu.cr_gid; 1468 return (copyout(&lxu, PTRIN(args->optval), sizeof(lxu))); 1469 /* NOTREACHED */ 1470 break; 1471 default: 1472 break; 1473 } 1474 break; 1475 case IPPROTO_IP: 1476 name = linux_to_bsd_ip_sockopt(args->optname); 1477 break; 1478 case IPPROTO_TCP: 1479 /* Linux TCP option values match BSD's */ 1480 name = args->optname; 1481 break; 1482 default: 1483 name = -1; 1484 break; 1485 } 1486 if (name == -1) 1487 return (EINVAL); 1488 1489 bsd_args.name = name; 1490 bsd_args.val = PTRIN(args->optval); 1491 bsd_args.avalsize = PTRIN(args->optlen); 1492 1493 if (name == IPV6_NEXTHOP) { 1494 error = getsockopt(td, &bsd_args); 1495 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.val); 1496 } else 1497 error = getsockopt(td, &bsd_args); 1498 1499 return (error); 1500} 1501 1502/* Argument list sizes for linux_socketcall */ 1503 1504#define LINUX_AL(x) ((x) * sizeof(l_ulong)) 1505 1506static const unsigned char lxs_args[] = { 1507 LINUX_AL(0) /* unused*/, LINUX_AL(3) /* socket */, 1508 LINUX_AL(3) /* bind */, LINUX_AL(3) /* connect */, 1509 LINUX_AL(2) /* listen */, LINUX_AL(3) /* accept */, 1510 LINUX_AL(3) /* getsockname */, LINUX_AL(3) /* getpeername */, 1511 LINUX_AL(4) /* socketpair */, LINUX_AL(4) /* send */, 1512 LINUX_AL(4) /* recv */, LINUX_AL(6) /* sendto */, 1513 LINUX_AL(6) /* recvfrom */, LINUX_AL(2) /* shutdown */, 1514 LINUX_AL(5) /* setsockopt */, LINUX_AL(5) /* getsockopt */, 1515 LINUX_AL(3) /* sendmsg */, LINUX_AL(3) /* recvmsg */ 1516}; 1517 1518#define LINUX_AL_SIZE sizeof(lxs_args) / sizeof(lxs_args[0]) - 1 1519 1520int 1521linux_socketcall(struct thread *td, struct linux_socketcall_args *args) 1522{ 1523 l_ulong a[6]; 1524 void *arg; 1525 int error; 1526 1527 if (args->what < LINUX_SOCKET || args->what > LINUX_AL_SIZE) 1528 return (EINVAL); 1529 error = copyin(PTRIN(args->args), a, lxs_args[args->what]); 1530 if (error) 1531 return (error); 1532 1533 arg = a; 1534 switch (args->what) { 1535 case LINUX_SOCKET: 1536 return (linux_socket(td, arg)); 1537 case LINUX_BIND: 1538 return (linux_bind(td, arg)); 1539 case LINUX_CONNECT: 1540 return (linux_connect(td, arg)); 1541 case LINUX_LISTEN: 1542 return (linux_listen(td, arg)); 1543 case LINUX_ACCEPT: 1544 return (linux_accept(td, arg)); 1545 case LINUX_GETSOCKNAME: 1546 return (linux_getsockname(td, arg)); 1547 case LINUX_GETPEERNAME: 1548 return (linux_getpeername(td, arg)); 1549 case LINUX_SOCKETPAIR: 1550 return (linux_socketpair(td, arg)); 1551 case LINUX_SEND: 1552 return (linux_send(td, arg)); 1553 case LINUX_RECV: 1554 return (linux_recv(td, arg)); 1555 case LINUX_SENDTO: 1556 return (linux_sendto(td, arg)); 1557 case LINUX_RECVFROM: 1558 return (linux_recvfrom(td, arg)); 1559 case LINUX_SHUTDOWN: 1560 return (linux_shutdown(td, arg)); 1561 case LINUX_SETSOCKOPT: 1562 return (linux_setsockopt(td, arg)); 1563 case LINUX_GETSOCKOPT: 1564 return (linux_getsockopt(td, arg)); 1565 case LINUX_SENDMSG: 1566 return (linux_sendmsg(td, arg)); 1567 case LINUX_RECVMSG: 1568 return (linux_recvmsg(td, arg)); 1569 } 1570 1571 uprintf("LINUX: 'socket' typ=%d not implemented\n", args->what); 1572 return (ENOSYS); 1573} 1574