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("$FreeBSD$"); 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 53 #include <netinet/in.h> 54 #include <netinet/in_systm.h> 55 #include <netinet/ip.h> 56 #ifdef INET6 57 #include <netinet/ip6.h> 58 #include <netinet6/ip6_var.h> 59 #endif 60 61 #ifdef COMPAT_LINUX32 62 #include <machine/../linux32/linux.h> 63 #include <machine/../linux32/linux32_proto.h> 64 #else 65 #include <machine/../linux/linux.h> 66 #include <machine/../linux/linux_proto.h> 67 #endif 68 #include <compat/linux/linux_socket.h> 69 #include <compat/linux/linux_util.h> 70 71 static int do_sa_get(struct sockaddr **, const struct osockaddr *, int *, 72 struct malloc_type *); 73 static int linux_to_bsd_domain(int); 74 75 /* 76 * Reads a linux sockaddr and does any necessary translation. 77 * Linux sockaddrs don't have a length field, only a family. 78 */ 79 static int 80 linux_getsockaddr(struct sockaddr **sap, const struct osockaddr *osa, int len) 81 { 82 int osalen = len; 83 84 return (do_sa_get(sap, osa, &osalen, M_SONAME)); 85 } 86 87 /* 88 * Copy the osockaddr structure pointed to by osa to kernel, adjust 89 * family and convert to sockaddr. 90 */ 91 static int 92 do_sa_get(struct sockaddr **sap, const struct osockaddr *osa, int *osalen, 93 struct malloc_type *mtype) 94 { 95 int error=0, bdom; 96 struct sockaddr *sa; 97 struct osockaddr *kosa; 98 int alloclen; 99 #ifdef INET6 100 int oldv6size; 101 struct sockaddr_in6 *sin6; 102 #endif 103 104 if (*osalen < 2 || *osalen > UCHAR_MAX || !osa) 105 return (EINVAL); 106 107 alloclen = *osalen; 108 #ifdef INET6 109 oldv6size = 0; 110 /* 111 * Check for old (pre-RFC2553) sockaddr_in6. We may accept it 112 * if it's a v4-mapped address, so reserve the proper space 113 * for it. 114 */ 115 if (alloclen == sizeof (struct sockaddr_in6) - sizeof (u_int32_t)) { 116 alloclen = sizeof (struct sockaddr_in6); 117 oldv6size = 1; 118 } 119 #endif 120 121 MALLOC(kosa, struct osockaddr *, alloclen, mtype, M_WAITOK); 122 123 if ((error = copyin(osa, kosa, *osalen))) 124 goto out; 125 126 bdom = linux_to_bsd_domain(kosa->sa_family); 127 if (bdom == -1) { 128 error = EINVAL; 129 goto out; 130 } 131 132 #ifdef INET6 133 /* 134 * Older Linux IPv6 code uses obsolete RFC2133 struct sockaddr_in6, 135 * which lacks the scope id compared with RFC2553 one. If we detect 136 * the situation, reject the address and write a message to system log. 137 * 138 * Still accept addresses for which the scope id is not used. 139 */ 140 if (oldv6size && bdom == AF_INET6) { 141 sin6 = (struct sockaddr_in6 *)kosa; 142 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr) || 143 (!IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) && 144 !IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) && 145 !IN6_IS_ADDR_V4COMPAT(&sin6->sin6_addr) && 146 !IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 147 !IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))) { 148 sin6->sin6_scope_id = 0; 149 } else { 150 log(LOG_DEBUG, 151 "obsolete pre-RFC2553 sockaddr_in6 rejected\n"); 152 error = EINVAL; 153 goto out; 154 } 155 } else 156 #endif 157 if (bdom == AF_INET) 158 alloclen = sizeof(struct sockaddr_in); 159 160 sa = (struct sockaddr *) kosa; 161 sa->sa_family = bdom; 162 sa->sa_len = alloclen; 163 164 *sap = sa; 165 *osalen = alloclen; 166 return (0); 167 168 out: 169 FREE(kosa, mtype); 170 return (error); 171 } 172 173 static int 174 linux_to_bsd_domain(int domain) 175 { 176 177 switch (domain) { 178 case LINUX_AF_UNSPEC: 179 return (AF_UNSPEC); 180 case LINUX_AF_UNIX: 181 return (AF_LOCAL); 182 case LINUX_AF_INET: 183 return (AF_INET); 184 case LINUX_AF_INET6: 185 return (AF_INET6); 186 case LINUX_AF_AX25: 187 return (AF_CCITT); 188 case LINUX_AF_IPX: 189 return (AF_IPX); 190 case LINUX_AF_APPLETALK: 191 return (AF_APPLETALK); 192 } 193 return (-1); 194 } 195 196 static int 197 bsd_to_linux_domain(int domain) 198 { 199 200 switch (domain) { 201 case AF_UNSPEC: 202 return (LINUX_AF_UNSPEC); 203 case AF_LOCAL: 204 return (LINUX_AF_UNIX); 205 case AF_INET: 206 return (LINUX_AF_INET); 207 case AF_INET6: 208 return (LINUX_AF_INET6); 209 case AF_CCITT: 210 return (LINUX_AF_AX25); 211 case AF_IPX: 212 return (LINUX_AF_IPX); 213 case AF_APPLETALK: 214 return (LINUX_AF_APPLETALK); 215 } 216 return (-1); 217 } 218 219 static int 220 linux_to_bsd_sockopt_level(int level) 221 { 222 223 switch (level) { 224 case LINUX_SOL_SOCKET: 225 return (SOL_SOCKET); 226 } 227 return (level); 228 } 229 230 static int 231 bsd_to_linux_sockopt_level(int level) 232 { 233 234 switch (level) { 235 case SOL_SOCKET: 236 return (LINUX_SOL_SOCKET); 237 } 238 return (level); 239 } 240 241 static int 242 linux_to_bsd_ip_sockopt(int opt) 243 { 244 245 switch (opt) { 246 case LINUX_IP_TOS: 247 return (IP_TOS); 248 case LINUX_IP_TTL: 249 return (IP_TTL); 250 case LINUX_IP_OPTIONS: 251 return (IP_OPTIONS); 252 case LINUX_IP_MULTICAST_IF: 253 return (IP_MULTICAST_IF); 254 case LINUX_IP_MULTICAST_TTL: 255 return (IP_MULTICAST_TTL); 256 case LINUX_IP_MULTICAST_LOOP: 257 return (IP_MULTICAST_LOOP); 258 case LINUX_IP_ADD_MEMBERSHIP: 259 return (IP_ADD_MEMBERSHIP); 260 case LINUX_IP_DROP_MEMBERSHIP: 261 return (IP_DROP_MEMBERSHIP); 262 case LINUX_IP_HDRINCL: 263 return (IP_HDRINCL); 264 } 265 return (-1); 266 } 267 268 static int 269 linux_to_bsd_so_sockopt(int opt) 270 { 271 272 switch (opt) { 273 case LINUX_SO_DEBUG: 274 return (SO_DEBUG); 275 case LINUX_SO_REUSEADDR: 276 return (SO_REUSEADDR); 277 case LINUX_SO_TYPE: 278 return (SO_TYPE); 279 case LINUX_SO_ERROR: 280 return (SO_ERROR); 281 case LINUX_SO_DONTROUTE: 282 return (SO_DONTROUTE); 283 case LINUX_SO_BROADCAST: 284 return (SO_BROADCAST); 285 case LINUX_SO_SNDBUF: 286 return (SO_SNDBUF); 287 case LINUX_SO_RCVBUF: 288 return (SO_RCVBUF); 289 case LINUX_SO_KEEPALIVE: 290 return (SO_KEEPALIVE); 291 case LINUX_SO_OOBINLINE: 292 return (SO_OOBINLINE); 293 case LINUX_SO_LINGER: 294 return (SO_LINGER); 295 } 296 return (-1); 297 } 298 299 static int 300 linux_to_bsd_msg_flags(int flags) 301 { 302 int ret_flags = 0; 303 304 if (flags & LINUX_MSG_OOB) 305 ret_flags |= MSG_OOB; 306 if (flags & LINUX_MSG_PEEK) 307 ret_flags |= MSG_PEEK; 308 if (flags & LINUX_MSG_DONTROUTE) 309 ret_flags |= MSG_DONTROUTE; 310 if (flags & LINUX_MSG_CTRUNC) 311 ret_flags |= MSG_CTRUNC; 312 if (flags & LINUX_MSG_TRUNC) 313 ret_flags |= MSG_TRUNC; 314 if (flags & LINUX_MSG_DONTWAIT) 315 ret_flags |= MSG_DONTWAIT; 316 if (flags & LINUX_MSG_EOR) 317 ret_flags |= MSG_EOR; 318 if (flags & LINUX_MSG_WAITALL) 319 ret_flags |= MSG_WAITALL; 320 if (flags & LINUX_MSG_NOSIGNAL) 321 ret_flags |= MSG_NOSIGNAL; 322 #if 0 /* not handled */ 323 if (flags & LINUX_MSG_PROXY) 324 ; 325 if (flags & LINUX_MSG_FIN) 326 ; 327 if (flags & LINUX_MSG_SYN) 328 ; 329 if (flags & LINUX_MSG_CONFIRM) 330 ; 331 if (flags & LINUX_MSG_RST) 332 ; 333 if (flags & LINUX_MSG_ERRQUEUE) 334 ; 335 #endif 336 return ret_flags; 337 } 338 339 /* 340 * If bsd_to_linux_sockaddr() or linux_to_bsd_sockaddr() faults, then the 341 * native syscall will fault. Thus, we don't really need to check the 342 * return values for these functions. 343 */ 344 345 static int 346 bsd_to_linux_sockaddr(struct sockaddr *arg) 347 { 348 struct sockaddr sa; 349 size_t sa_len = sizeof(struct sockaddr); 350 int error; 351 352 if ((error = copyin(arg, &sa, sa_len))) 353 return (error); 354 355 *(u_short *)&sa = sa.sa_family; 356 357 error = copyout(&sa, arg, sa_len); 358 359 return (error); 360 } 361 362 static int 363 linux_to_bsd_sockaddr(struct sockaddr *arg, int len) 364 { 365 struct sockaddr sa; 366 size_t sa_len = sizeof(struct sockaddr); 367 int error; 368 369 if ((error = copyin(arg, &sa, sa_len))) 370 return (error); 371 372 sa.sa_family = *(sa_family_t *)&sa; 373 sa.sa_len = len; 374 375 error = copyout(&sa, arg, sa_len); 376 377 return (error); 378 } 379 380 381 static int 382 linux_sa_put(struct osockaddr *osa) 383 { 384 struct osockaddr sa; 385 int error, bdom; 386 387 /* 388 * Only read/write the osockaddr family part, the rest is 389 * not changed. 390 */ 391 error = copyin(osa, &sa, sizeof(sa.sa_family)); 392 if (error) 393 return (error); 394 395 bdom = bsd_to_linux_domain(sa.sa_family); 396 if (bdom == -1) 397 return (EINVAL); 398 399 sa.sa_family = bdom; 400 error = copyout(&sa, osa, sizeof(sa.sa_family)); 401 if (error) 402 return (error); 403 404 return (0); 405 } 406 407 static int 408 linux_sendit(struct thread *td, int s, struct msghdr *mp, int flags, 409 enum uio_seg segflg) 410 { 411 struct mbuf *control; 412 struct sockaddr *to; 413 int error; 414 415 if (mp->msg_name != NULL) { 416 error = linux_getsockaddr(&to, mp->msg_name, mp->msg_namelen); 417 if (error) 418 return (error); 419 mp->msg_name = to; 420 } else 421 to = NULL; 422 423 if (mp->msg_control != NULL) { 424 struct cmsghdr *cmsg; 425 426 if (mp->msg_controllen < sizeof(struct cmsghdr)) { 427 error = EINVAL; 428 goto bad; 429 } 430 error = sockargs(&control, mp->msg_control, 431 mp->msg_controllen, MT_CONTROL); 432 if (error) 433 goto bad; 434 435 cmsg = mtod(control, struct cmsghdr *); 436 cmsg->cmsg_level = linux_to_bsd_sockopt_level(cmsg->cmsg_level); 437 } else 438 control = NULL; 439 440 error = kern_sendit(td, s, mp, linux_to_bsd_msg_flags(flags), control, 441 segflg); 442 443 bad: 444 if (to) 445 FREE(to, M_SONAME); 446 return (error); 447 } 448 449 /* Return 0 if IP_HDRINCL is set for the given socket. */ 450 static int 451 linux_check_hdrincl(struct thread *td, int s) 452 { 453 int error, optval, size_val; 454 455 size_val = sizeof(optval); 456 error = kern_getsockopt(td, s, IPPROTO_IP, IP_HDRINCL, 457 &optval, UIO_SYSSPACE, &size_val); 458 if (error) 459 return (error); 460 461 return (optval == 0); 462 } 463 464 struct linux_sendto_args { 465 int s; 466 l_uintptr_t msg; 467 int len; 468 int flags; 469 l_uintptr_t to; 470 int tolen; 471 }; 472 473 /* 474 * Updated sendto() when IP_HDRINCL is set: 475 * tweak endian-dependent fields in the IP packet. 476 */ 477 static int 478 linux_sendto_hdrincl(struct thread *td, struct linux_sendto_args *linux_args) 479 { 480 /* 481 * linux_ip_copysize defines how many bytes we should copy 482 * from the beginning of the IP packet before we customize it for BSD. 483 * It should include all the fields we modify (ip_len and ip_off). 484 */ 485 #define linux_ip_copysize 8 486 487 struct ip *packet; 488 struct msghdr msg; 489 struct iovec aiov[1]; 490 int error; 491 492 /* Check that the packet isn't too big or too small. */ 493 if (linux_args->len < linux_ip_copysize || 494 linux_args->len > IP_MAXPACKET) 495 return (EINVAL); 496 497 packet = (struct ip *)malloc(linux_args->len, M_TEMP, M_WAITOK); 498 499 /* Make kernel copy of the packet to be sent */ 500 if ((error = copyin(PTRIN(linux_args->msg), packet, 501 linux_args->len))) 502 goto goout; 503 504 /* Convert fields from Linux to BSD raw IP socket format */ 505 packet->ip_len = linux_args->len; 506 packet->ip_off = ntohs(packet->ip_off); 507 508 /* Prepare the msghdr and iovec structures describing the new packet */ 509 msg.msg_name = PTRIN(linux_args->to); 510 msg.msg_namelen = linux_args->tolen; 511 msg.msg_iov = aiov; 512 msg.msg_iovlen = 1; 513 msg.msg_control = NULL; 514 msg.msg_flags = 0; 515 aiov[0].iov_base = (char *)packet; 516 aiov[0].iov_len = linux_args->len; 517 error = linux_sendit(td, linux_args->s, &msg, linux_args->flags, 518 UIO_SYSSPACE); 519 goout: 520 free(packet, M_TEMP); 521 return (error); 522 } 523 524 struct linux_socket_args { 525 int domain; 526 int type; 527 int protocol; 528 }; 529 530 static int 531 linux_socket(struct thread *td, struct linux_socket_args *args) 532 { 533 struct linux_socket_args linux_args; 534 struct socket_args /* { 535 int domain; 536 int type; 537 int protocol; 538 } */ bsd_args; 539 int error; 540 int retval_socket; 541 542 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 543 return (error); 544 545 bsd_args.protocol = linux_args.protocol; 546 bsd_args.type = linux_args.type; 547 bsd_args.domain = linux_to_bsd_domain(linux_args.domain); 548 if (bsd_args.domain == -1) 549 return (EINVAL); 550 551 retval_socket = socket(td, &bsd_args); 552 if (bsd_args.type == SOCK_RAW 553 && (bsd_args.protocol == IPPROTO_RAW || bsd_args.protocol == 0) 554 && bsd_args.domain == AF_INET 555 && retval_socket >= 0) { 556 /* It's a raw IP socket: set the IP_HDRINCL option. */ 557 int hdrincl; 558 559 hdrincl = 1; 560 /* We ignore any error returned by kern_setsockopt() */ 561 kern_setsockopt(td, td->td_retval[0], IPPROTO_IP, IP_HDRINCL, 562 &hdrincl, UIO_SYSSPACE, sizeof(hdrincl)); 563 } 564 #ifdef INET6 565 /* 566 * Linux AF_INET6 socket has IPV6_V6ONLY setsockopt set to 0 by 567 * default and some apps depend on this. So, set V6ONLY to 0 568 * for Linux apps if the sysctl value is set to 1. 569 */ 570 if (bsd_args.domain == PF_INET6 && retval_socket >= 0 571 #ifndef KLD_MODULE 572 /* 573 * XXX: Avoid undefined symbol error with an IPv4 only 574 * kernel. 575 */ 576 && ip6_v6only 577 #endif 578 ) { 579 int v6only; 580 581 v6only = 0; 582 /* We ignore any error returned by setsockopt() */ 583 kern_setsockopt(td, td->td_retval[0], IPPROTO_IPV6, IPV6_V6ONLY, 584 &v6only, UIO_SYSSPACE, sizeof(v6only)); 585 } 586 #endif 587 588 return (retval_socket); 589 } 590 591 struct linux_bind_args { 592 int s; 593 l_uintptr_t name; 594 int namelen; 595 }; 596 597 static int 598 linux_bind(struct thread *td, struct linux_bind_args *args) 599 { 600 struct linux_bind_args linux_args; 601 struct sockaddr *sa; 602 int error; 603 604 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 605 return (error); 606 607 error = linux_getsockaddr(&sa, PTRIN(linux_args.name), 608 linux_args.namelen); 609 if (error) 610 return (error); 611 612 return (kern_bind(td, linux_args.s, sa)); 613 } 614 615 struct linux_connect_args { 616 int s; 617 l_uintptr_t name; 618 int namelen; 619 }; 620 int linux_connect(struct thread *, struct linux_connect_args *); 621 622 int 623 linux_connect(struct thread *td, struct linux_connect_args *args) 624 { 625 struct linux_connect_args linux_args; 626 struct socket *so; 627 struct sockaddr *sa; 628 u_int fflag; 629 int error; 630 631 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 632 return (error); 633 634 error = linux_getsockaddr(&sa, 635 (struct osockaddr *)PTRIN(linux_args.name), 636 linux_args.namelen); 637 if (error) 638 return (error); 639 640 error = kern_connect(td, linux_args.s, sa); 641 if (error != EISCONN) 642 return (error); 643 644 /* 645 * Linux doesn't return EISCONN the first time it occurs, 646 * when on a non-blocking socket. Instead it returns the 647 * error getsockopt(SOL_SOCKET, SO_ERROR) would return on BSD. 648 * 649 * XXXRW: Instead of using fgetsock(), check that it is a 650 * socket and use the file descriptor reference instead of 651 * creating a new one. 652 */ 653 NET_LOCK_GIANT(); 654 error = fgetsock(td, linux_args.s, &so, &fflag); 655 if (error == 0) { 656 error = EISCONN; 657 if (fflag & FNONBLOCK) { 658 SOCK_LOCK(so); 659 if (so->so_emuldata == 0) 660 error = so->so_error; 661 so->so_emuldata = (void *)1; 662 SOCK_UNLOCK(so); 663 } 664 fputsock(so); 665 } 666 NET_UNLOCK_GIANT(); 667 return (error); 668 } 669 670 struct linux_listen_args { 671 int s; 672 int backlog; 673 }; 674 675 static int 676 linux_listen(struct thread *td, struct linux_listen_args *args) 677 { 678 struct linux_listen_args linux_args; 679 struct listen_args /* { 680 int s; 681 int backlog; 682 } */ bsd_args; 683 int error; 684 685 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 686 return (error); 687 688 bsd_args.s = linux_args.s; 689 bsd_args.backlog = linux_args.backlog; 690 return (listen(td, &bsd_args)); 691 } 692 693 struct linux_accept_args { 694 int s; 695 l_uintptr_t addr; 696 l_uintptr_t namelen; 697 }; 698 699 static int 700 linux_accept(struct thread *td, struct linux_accept_args *args) 701 { 702 struct linux_accept_args linux_args; 703 struct accept_args /* { 704 int s; 705 struct sockaddr * __restrict name; 706 socklen_t * __restrict anamelen; 707 } */ bsd_args; 708 struct close_args /* { 709 int fd; 710 } */ c_args; 711 int error, fd; 712 713 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 714 return (error); 715 716 bsd_args.s = linux_args.s; 717 /* XXX: */ 718 bsd_args.name = (struct sockaddr * __restrict)PTRIN(linux_args.addr); 719 bsd_args.anamelen = PTRIN(linux_args.namelen);/* XXX */ 720 error = accept(td, &bsd_args); 721 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.name); 722 if (error) 723 return (error); 724 if (linux_args.addr) { 725 error = linux_sa_put(PTRIN(linux_args.addr)); 726 if (error) { 727 c_args.fd = td->td_retval[0]; 728 (void)close(td, &c_args); 729 return (error); 730 } 731 } 732 733 /* 734 * linux appears not to copy flags from the parent socket to the 735 * accepted one, so we must clear the flags in the new descriptor. 736 * Ignore any errors, because we already have an open fd. 737 */ 738 fd = td->td_retval[0]; 739 (void)kern_fcntl(td, fd, F_SETFL, 0); 740 td->td_retval[0] = fd; 741 return (0); 742 } 743 744 struct linux_getsockname_args { 745 int s; 746 l_uintptr_t addr; 747 l_uintptr_t namelen; 748 }; 749 750 static int 751 linux_getsockname(struct thread *td, struct linux_getsockname_args *args) 752 { 753 struct linux_getsockname_args linux_args; 754 struct getsockname_args /* { 755 int fdes; 756 struct sockaddr * __restrict asa; 757 socklen_t * __restrict alen; 758 } */ bsd_args; 759 int error; 760 761 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 762 return (error); 763 764 bsd_args.fdes = linux_args.s; 765 /* XXX: */ 766 bsd_args.asa = (struct sockaddr * __restrict)PTRIN(linux_args.addr); 767 bsd_args.alen = PTRIN(linux_args.namelen); /* XXX */ 768 error = getsockname(td, &bsd_args); 769 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.asa); 770 if (error) 771 return (error); 772 error = linux_sa_put(PTRIN(linux_args.addr)); 773 if (error) 774 return (error); 775 return (0); 776 } 777 778 struct linux_getpeername_args { 779 int s; 780 l_uintptr_t addr; 781 l_uintptr_t namelen; 782 }; 783 784 static int 785 linux_getpeername(struct thread *td, struct linux_getpeername_args *args) 786 { 787 struct linux_getpeername_args linux_args; 788 struct getpeername_args /* { 789 int fdes; 790 caddr_t asa; 791 int *alen; 792 } */ bsd_args; 793 int error; 794 795 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 796 return (error); 797 798 bsd_args.fdes = linux_args.s; 799 bsd_args.asa = (struct sockaddr *)PTRIN(linux_args.addr); 800 bsd_args.alen = (int *)PTRIN(linux_args.namelen); 801 error = getpeername(td, &bsd_args); 802 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.asa); 803 if (error) 804 return (error); 805 error = linux_sa_put(PTRIN(linux_args.addr)); 806 if (error) 807 return (error); 808 return (0); 809 } 810 811 struct linux_socketpair_args { 812 int domain; 813 int type; 814 int protocol; 815 l_uintptr_t rsv; 816 }; 817 818 static int 819 linux_socketpair(struct thread *td, struct linux_socketpair_args *args) 820 { 821 struct linux_socketpair_args linux_args; 822 struct socketpair_args /* { 823 int domain; 824 int type; 825 int protocol; 826 int *rsv; 827 } */ bsd_args; 828 int error; 829 830 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 831 return (error); 832 833 bsd_args.domain = linux_to_bsd_domain(linux_args.domain); 834 if (bsd_args.domain == -1) 835 return (EINVAL); 836 837 bsd_args.type = linux_args.type; 838 bsd_args.protocol = linux_args.protocol; 839 bsd_args.rsv = (int *)PTRIN(linux_args.rsv); 840 return (socketpair(td, &bsd_args)); 841 } 842 843 struct linux_send_args { 844 int s; 845 l_uintptr_t msg; 846 int len; 847 int flags; 848 }; 849 850 static int 851 linux_send(struct thread *td, struct linux_send_args *args) 852 { 853 struct linux_send_args linux_args; 854 struct sendto_args /* { 855 int s; 856 caddr_t buf; 857 int len; 858 int flags; 859 caddr_t to; 860 int tolen; 861 } */ bsd_args; 862 int error; 863 864 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 865 return (error); 866 867 bsd_args.s = linux_args.s; 868 bsd_args.buf = (caddr_t)PTRIN(linux_args.msg); 869 bsd_args.len = linux_args.len; 870 bsd_args.flags = linux_args.flags; 871 bsd_args.to = NULL; 872 bsd_args.tolen = 0; 873 return sendto(td, &bsd_args); 874 } 875 876 struct linux_recv_args { 877 int s; 878 l_uintptr_t msg; 879 int len; 880 int flags; 881 }; 882 883 static int 884 linux_recv(struct thread *td, struct linux_recv_args *args) 885 { 886 struct linux_recv_args linux_args; 887 struct recvfrom_args /* { 888 int s; 889 caddr_t buf; 890 int len; 891 int flags; 892 struct sockaddr *from; 893 socklen_t fromlenaddr; 894 } */ bsd_args; 895 int error; 896 897 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 898 return (error); 899 900 bsd_args.s = linux_args.s; 901 bsd_args.buf = (caddr_t)PTRIN(linux_args.msg); 902 bsd_args.len = linux_args.len; 903 bsd_args.flags = linux_args.flags; 904 bsd_args.from = NULL; 905 bsd_args.fromlenaddr = 0; 906 return (recvfrom(td, &bsd_args)); 907 } 908 909 static int 910 linux_sendto(struct thread *td, struct linux_sendto_args *args) 911 { 912 struct linux_sendto_args linux_args; 913 struct msghdr msg; 914 struct iovec aiov; 915 int error; 916 917 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 918 return (error); 919 920 if (linux_check_hdrincl(td, linux_args.s) == 0) 921 /* IP_HDRINCL set, tweak the packet before sending */ 922 return (linux_sendto_hdrincl(td, &linux_args)); 923 924 msg.msg_name = PTRIN(linux_args.to); 925 msg.msg_namelen = linux_args.tolen; 926 msg.msg_iov = &aiov; 927 msg.msg_iovlen = 1; 928 msg.msg_control = NULL; 929 msg.msg_flags = 0; 930 aiov.iov_base = PTRIN(linux_args.msg); 931 aiov.iov_len = linux_args.len; 932 error = linux_sendit(td, linux_args.s, &msg, linux_args.flags, 933 UIO_USERSPACE); 934 return (error); 935 } 936 937 struct linux_recvfrom_args { 938 int s; 939 l_uintptr_t buf; 940 int len; 941 int flags; 942 l_uintptr_t from; 943 l_uintptr_t fromlen; 944 }; 945 946 static int 947 linux_recvfrom(struct thread *td, struct linux_recvfrom_args *args) 948 { 949 struct linux_recvfrom_args linux_args; 950 struct recvfrom_args /* { 951 int s; 952 caddr_t buf; 953 size_t len; 954 int flags; 955 struct sockaddr * __restrict from; 956 socklen_t * __restrict fromlenaddr; 957 } */ bsd_args; 958 size_t len; 959 int error; 960 961 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 962 return (error); 963 964 if ((error = copyin(PTRIN(linux_args.fromlen), &len, sizeof(size_t)))) 965 return (error); 966 967 bsd_args.s = linux_args.s; 968 bsd_args.buf = PTRIN(linux_args.buf); 969 bsd_args.len = linux_args.len; 970 bsd_args.flags = linux_to_bsd_msg_flags(linux_args.flags); 971 /* XXX: */ 972 bsd_args.from = (struct sockaddr * __restrict)PTRIN(linux_args.from); 973 bsd_args.fromlenaddr = PTRIN(linux_args.fromlen);/* XXX */ 974 975 linux_to_bsd_sockaddr((struct sockaddr *)bsd_args.from, len); 976 error = recvfrom(td, &bsd_args); 977 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.from); 978 979 if (error) 980 return (error); 981 if (linux_args.from) { 982 error = linux_sa_put((struct osockaddr *) 983 PTRIN(linux_args.from)); 984 if (error) 985 return (error); 986 } 987 return (0); 988 } 989 990 struct linux_sendmsg_args { 991 int s; 992 l_uintptr_t msg; 993 int flags; 994 }; 995 996 static int 997 linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args) 998 { 999 struct linux_sendmsg_args linux_args; 1000 struct msghdr msg; 1001 struct iovec *iov; 1002 int error; 1003 1004 /* XXXTJR sendmsg is broken on amd64 */ 1005 1006 error = copyin(args, &linux_args, sizeof(linux_args)); 1007 if (error) 1008 return (error); 1009 error = copyin(PTRIN(linux_args.msg), &msg, sizeof(msg)); 1010 if (error) 1011 return (error); 1012 error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE); 1013 if (error) 1014 return (error); 1015 msg.msg_iov = iov; 1016 msg.msg_flags = 0; 1017 error = linux_sendit(td, linux_args.s, &msg, linux_args.flags, 1018 UIO_USERSPACE); 1019 free(iov, M_IOV); 1020 return (error); 1021 } 1022 1023 struct linux_recvmsg_args { 1024 int s; 1025 l_uintptr_t msg; 1026 int flags; 1027 }; 1028 1029 static int 1030 linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args) 1031 { 1032 struct linux_recvmsg_args linux_args; 1033 struct recvmsg_args /* { 1034 int s; 1035 struct msghdr *msg; 1036 int flags; 1037 } */ bsd_args; 1038 struct msghdr msg; 1039 struct cmsghdr *cmsg; 1040 int error; 1041 1042 /* XXXTJR recvmsg is broken on amd64 */ 1043 1044 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 1045 return (error); 1046 1047 bsd_args.s = linux_args.s; 1048 bsd_args.msg = PTRIN(linux_args.msg); 1049 bsd_args.flags = linux_to_bsd_msg_flags(linux_args.flags); 1050 if (msg.msg_name) { 1051 linux_to_bsd_sockaddr((struct sockaddr *)msg.msg_name, 1052 msg.msg_namelen); 1053 error = recvmsg(td, &bsd_args); 1054 bsd_to_linux_sockaddr((struct sockaddr *)msg.msg_name); 1055 } else 1056 error = recvmsg(td, &bsd_args); 1057 if (error) 1058 return (error); 1059 1060 if (bsd_args.msg->msg_control != NULL && 1061 bsd_args.msg->msg_controllen > 0) { 1062 cmsg = (struct cmsghdr*)bsd_args.msg->msg_control; 1063 cmsg->cmsg_level = bsd_to_linux_sockopt_level(cmsg->cmsg_level); 1064 } 1065 1066 error = copyin(PTRIN(linux_args.msg), &msg, sizeof(msg)); 1067 if (error) 1068 return (error); 1069 if (msg.msg_name && msg.msg_namelen > 2) 1070 error = linux_sa_put(msg.msg_name); 1071 return (error); 1072 } 1073 1074 struct linux_shutdown_args { 1075 int s; 1076 int how; 1077 }; 1078 1079 static int 1080 linux_shutdown(struct thread *td, struct linux_shutdown_args *args) 1081 { 1082 struct linux_shutdown_args linux_args; 1083 struct shutdown_args /* { 1084 int s; 1085 int how; 1086 } */ bsd_args; 1087 int error; 1088 1089 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 1090 return (error); 1091 1092 bsd_args.s = linux_args.s; 1093 bsd_args.how = linux_args.how; 1094 return (shutdown(td, &bsd_args)); 1095 } 1096 1097 struct linux_setsockopt_args { 1098 int s; 1099 int level; 1100 int optname; 1101 l_uintptr_t optval; 1102 int optlen; 1103 }; 1104 1105 static int 1106 linux_setsockopt(struct thread *td, struct linux_setsockopt_args *args) 1107 { 1108 struct linux_setsockopt_args linux_args; 1109 struct setsockopt_args /* { 1110 int s; 1111 int level; 1112 int name; 1113 caddr_t val; 1114 int valsize; 1115 } */ bsd_args; 1116 int error, name; 1117 1118 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 1119 return (error); 1120 1121 bsd_args.s = linux_args.s; 1122 bsd_args.level = linux_to_bsd_sockopt_level(linux_args.level); 1123 switch (bsd_args.level) { 1124 case SOL_SOCKET: 1125 name = linux_to_bsd_so_sockopt(linux_args.optname); 1126 break; 1127 case IPPROTO_IP: 1128 name = linux_to_bsd_ip_sockopt(linux_args.optname); 1129 break; 1130 case IPPROTO_TCP: 1131 /* Linux TCP option values match BSD's */ 1132 name = linux_args.optname; 1133 break; 1134 default: 1135 name = -1; 1136 break; 1137 } 1138 if (name == -1) 1139 return (EINVAL); 1140 1141 bsd_args.name = name; 1142 bsd_args.val = PTRIN(linux_args.optval); 1143 bsd_args.valsize = linux_args.optlen; 1144 1145 if (name == IPV6_NEXTHOP) { 1146 linux_to_bsd_sockaddr((struct sockaddr *)bsd_args.val, 1147 bsd_args.valsize); 1148 error = setsockopt(td, &bsd_args); 1149 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.val); 1150 } else 1151 error = setsockopt(td, &bsd_args); 1152 1153 return (error); 1154 } 1155 1156 struct linux_getsockopt_args { 1157 int s; 1158 int level; 1159 int optname; 1160 l_uintptr_t optval; 1161 l_uintptr_t optlen; 1162 }; 1163 1164 static int 1165 linux_getsockopt(struct thread *td, struct linux_getsockopt_args *args) 1166 { 1167 struct linux_getsockopt_args linux_args; 1168 struct getsockopt_args /* { 1169 int s; 1170 int level; 1171 int name; 1172 caddr_t val; 1173 int *avalsize; 1174 } */ bsd_args; 1175 int error, name; 1176 1177 if ((error = copyin(args, &linux_args, sizeof(linux_args)))) 1178 return (error); 1179 1180 bsd_args.s = linux_args.s; 1181 bsd_args.level = linux_to_bsd_sockopt_level(linux_args.level); 1182 switch (bsd_args.level) { 1183 case SOL_SOCKET: 1184 name = linux_to_bsd_so_sockopt(linux_args.optname); 1185 break; 1186 case IPPROTO_IP: 1187 name = linux_to_bsd_ip_sockopt(linux_args.optname); 1188 break; 1189 case IPPROTO_TCP: 1190 /* Linux TCP option values match BSD's */ 1191 name = linux_args.optname; 1192 break; 1193 default: 1194 name = -1; 1195 break; 1196 } 1197 if (name == -1) 1198 return (EINVAL); 1199 1200 bsd_args.name = name; 1201 bsd_args.val = PTRIN(linux_args.optval); 1202 bsd_args.avalsize = PTRIN(linux_args.optlen); 1203 1204 if (name == IPV6_NEXTHOP) { 1205 error = getsockopt(td, &bsd_args); 1206 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.val); 1207 } else 1208 error = getsockopt(td, &bsd_args); 1209 1210 return (error); 1211 } 1212 1213 int 1214 linux_socketcall(struct thread *td, struct linux_socketcall_args *args) 1215 { 1216 void *arg = (void *)(intptr_t)args->args; 1217 1218 switch (args->what) { 1219 case LINUX_SOCKET: 1220 return (linux_socket(td, arg)); 1221 case LINUX_BIND: 1222 return (linux_bind(td, arg)); 1223 case LINUX_CONNECT: 1224 return (linux_connect(td, arg)); 1225 case LINUX_LISTEN: 1226 return (linux_listen(td, arg)); 1227 case LINUX_ACCEPT: 1228 return (linux_accept(td, arg)); 1229 case LINUX_GETSOCKNAME: 1230 return (linux_getsockname(td, arg)); 1231 case LINUX_GETPEERNAME: 1232 return (linux_getpeername(td, arg)); 1233 case LINUX_SOCKETPAIR: 1234 return (linux_socketpair(td, arg)); 1235 case LINUX_SEND: 1236 return (linux_send(td, arg)); 1237 case LINUX_RECV: 1238 return (linux_recv(td, arg)); 1239 case LINUX_SENDTO: 1240 return (linux_sendto(td, arg)); 1241 case LINUX_RECVFROM: 1242 return (linux_recvfrom(td, arg)); 1243 case LINUX_SHUTDOWN: 1244 return (linux_shutdown(td, arg)); 1245 case LINUX_SETSOCKOPT: 1246 return (linux_setsockopt(td, arg)); 1247 case LINUX_GETSOCKOPT: 1248 return (linux_getsockopt(td, arg)); 1249 case LINUX_SENDMSG: 1250 return (linux_sendmsg(td, arg)); 1251 case LINUX_RECVMSG: 1252 return (linux_recvmsg(td, arg)); 1253 } 1254 1255 uprintf("LINUX: 'socket' typ=%d not implemented\n", args->what); 1256 return (ENOSYS); 1257 } 1258