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 #include <sys/un.h> 53 54 #include <net/if.h> 55 #include <netinet/in.h> 56 #include <netinet/in_systm.h> 57 #include <netinet/ip.h> 58 #ifdef INET6 59 #include <netinet/ip6.h> 60 #include <netinet6/ip6_var.h> 61 #include <netinet6/in6_var.h> 62 #endif 63 64 #ifdef COMPAT_LINUX32 65 #include <machine/../linux32/linux.h> 66 #include <machine/../linux32/linux32_proto.h> 67 #else 68 #include <machine/../linux/linux.h> 69 #include <machine/../linux/linux_proto.h> 70 #endif 71 #include <compat/linux/linux_socket.h> 72 #include <compat/linux/linux_util.h> 73 74 static int do_sa_get(struct sockaddr **, const struct osockaddr *, int *, 75 struct malloc_type *); 76 static int linux_to_bsd_domain(int); 77 78 /* 79 * Reads a linux sockaddr and does any necessary translation. 80 * Linux sockaddrs don't have a length field, only a family. 81 */ 82 static int 83 linux_getsockaddr(struct sockaddr **sap, const struct osockaddr *osa, int len) 84 { 85 int osalen = len; 86 87 return (do_sa_get(sap, osa, &osalen, M_SONAME)); 88 } 89 90 /* 91 * Copy the osockaddr structure pointed to by osa to kernel, adjust 92 * family and convert to sockaddr. 93 */ 94 static int 95 do_sa_get(struct sockaddr **sap, const struct osockaddr *osa, int *osalen, 96 struct malloc_type *mtype) 97 { 98 int error=0, bdom; 99 struct sockaddr *sa; 100 struct osockaddr *kosa; 101 int alloclen; 102 #ifdef INET6 103 int oldv6size; 104 struct sockaddr_in6 *sin6; 105 #endif 106 107 if (*osalen < 2 || *osalen > UCHAR_MAX || !osa) 108 return (EINVAL); 109 110 alloclen = *osalen; 111 #ifdef INET6 112 oldv6size = 0; 113 /* 114 * Check for old (pre-RFC2553) sockaddr_in6. We may accept it 115 * if it's a v4-mapped address, so reserve the proper space 116 * for it. 117 */ 118 if (alloclen == sizeof (struct sockaddr_in6) - sizeof (u_int32_t)) { 119 alloclen = sizeof (struct sockaddr_in6); 120 oldv6size = 1; 121 } 122 #endif 123 124 kosa = malloc(alloclen, mtype, M_WAITOK); 125 126 if ((error = copyin(osa, kosa, *osalen))) 127 goto out; 128 129 bdom = linux_to_bsd_domain(kosa->sa_family); 130 if (bdom == -1) { 131 error = EINVAL; 132 goto out; 133 } 134 135 #ifdef INET6 136 /* 137 * Older Linux IPv6 code uses obsolete RFC2133 struct sockaddr_in6, 138 * which lacks the scope id compared with RFC2553 one. If we detect 139 * the situation, reject the address and write a message to system log. 140 * 141 * Still accept addresses for which the scope id is not used. 142 */ 143 if (oldv6size && bdom == AF_INET6) { 144 sin6 = (struct sockaddr_in6 *)kosa; 145 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr) || 146 (!IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) && 147 !IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) && 148 !IN6_IS_ADDR_V4COMPAT(&sin6->sin6_addr) && 149 !IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 150 !IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))) { 151 sin6->sin6_scope_id = 0; 152 } else { 153 log(LOG_DEBUG, 154 "obsolete pre-RFC2553 sockaddr_in6 rejected\n"); 155 error = EINVAL; 156 goto out; 157 } 158 } else 159 #endif 160 if (bdom == AF_INET) 161 alloclen = sizeof(struct sockaddr_in); 162 163 sa = (struct sockaddr *) kosa; 164 sa->sa_family = bdom; 165 sa->sa_len = alloclen; 166 167 *sap = sa; 168 *osalen = alloclen; 169 return (0); 170 171 out: 172 free(kosa, mtype); 173 return (error); 174 } 175 176 static int 177 linux_to_bsd_domain(int domain) 178 { 179 180 switch (domain) { 181 case LINUX_AF_UNSPEC: 182 return (AF_UNSPEC); 183 case LINUX_AF_UNIX: 184 return (AF_LOCAL); 185 case LINUX_AF_INET: 186 return (AF_INET); 187 case LINUX_AF_INET6: 188 return (AF_INET6); 189 case LINUX_AF_AX25: 190 return (AF_CCITT); 191 case LINUX_AF_IPX: 192 return (AF_IPX); 193 case LINUX_AF_APPLETALK: 194 return (AF_APPLETALK); 195 } 196 return (-1); 197 } 198 199 static int 200 bsd_to_linux_domain(int domain) 201 { 202 203 switch (domain) { 204 case AF_UNSPEC: 205 return (LINUX_AF_UNSPEC); 206 case AF_LOCAL: 207 return (LINUX_AF_UNIX); 208 case AF_INET: 209 return (LINUX_AF_INET); 210 case AF_INET6: 211 return (LINUX_AF_INET6); 212 case AF_CCITT: 213 return (LINUX_AF_AX25); 214 case AF_IPX: 215 return (LINUX_AF_IPX); 216 case AF_APPLETALK: 217 return (LINUX_AF_APPLETALK); 218 } 219 return (-1); 220 } 221 222 static int 223 linux_to_bsd_sockopt_level(int level) 224 { 225 226 switch (level) { 227 case LINUX_SOL_SOCKET: 228 return (SOL_SOCKET); 229 } 230 return (level); 231 } 232 233 static int 234 bsd_to_linux_sockopt_level(int level) 235 { 236 237 switch (level) { 238 case SOL_SOCKET: 239 return (LINUX_SOL_SOCKET); 240 } 241 return (level); 242 } 243 244 static int 245 linux_to_bsd_ip_sockopt(int opt) 246 { 247 248 switch (opt) { 249 case LINUX_IP_TOS: 250 return (IP_TOS); 251 case LINUX_IP_TTL: 252 return (IP_TTL); 253 case LINUX_IP_OPTIONS: 254 return (IP_OPTIONS); 255 case LINUX_IP_MULTICAST_IF: 256 return (IP_MULTICAST_IF); 257 case LINUX_IP_MULTICAST_TTL: 258 return (IP_MULTICAST_TTL); 259 case LINUX_IP_MULTICAST_LOOP: 260 return (IP_MULTICAST_LOOP); 261 case LINUX_IP_ADD_MEMBERSHIP: 262 return (IP_ADD_MEMBERSHIP); 263 case LINUX_IP_DROP_MEMBERSHIP: 264 return (IP_DROP_MEMBERSHIP); 265 case LINUX_IP_HDRINCL: 266 return (IP_HDRINCL); 267 } 268 return (-1); 269 } 270 271 static int 272 linux_to_bsd_so_sockopt(int opt) 273 { 274 275 switch (opt) { 276 case LINUX_SO_DEBUG: 277 return (SO_DEBUG); 278 case LINUX_SO_REUSEADDR: 279 return (SO_REUSEADDR); 280 case LINUX_SO_TYPE: 281 return (SO_TYPE); 282 case LINUX_SO_ERROR: 283 return (SO_ERROR); 284 case LINUX_SO_DONTROUTE: 285 return (SO_DONTROUTE); 286 case LINUX_SO_BROADCAST: 287 return (SO_BROADCAST); 288 case LINUX_SO_SNDBUF: 289 return (SO_SNDBUF); 290 case LINUX_SO_RCVBUF: 291 return (SO_RCVBUF); 292 case LINUX_SO_KEEPALIVE: 293 return (SO_KEEPALIVE); 294 case LINUX_SO_OOBINLINE: 295 return (SO_OOBINLINE); 296 case LINUX_SO_LINGER: 297 return (SO_LINGER); 298 case LINUX_SO_PEERCRED: 299 return (LOCAL_PEERCRED); 300 case LINUX_SO_RCVLOWAT: 301 return (SO_RCVLOWAT); 302 case LINUX_SO_SNDLOWAT: 303 return (SO_SNDLOWAT); 304 case LINUX_SO_RCVTIMEO: 305 return (SO_RCVTIMEO); 306 case LINUX_SO_SNDTIMEO: 307 return (SO_SNDTIMEO); 308 case LINUX_SO_TIMESTAMP: 309 return (SO_TIMESTAMP); 310 case LINUX_SO_ACCEPTCONN: 311 return (SO_ACCEPTCONN); 312 } 313 return (-1); 314 } 315 316 static int 317 linux_to_bsd_msg_flags(int flags) 318 { 319 int ret_flags = 0; 320 321 if (flags & LINUX_MSG_OOB) 322 ret_flags |= MSG_OOB; 323 if (flags & LINUX_MSG_PEEK) 324 ret_flags |= MSG_PEEK; 325 if (flags & LINUX_MSG_DONTROUTE) 326 ret_flags |= MSG_DONTROUTE; 327 if (flags & LINUX_MSG_CTRUNC) 328 ret_flags |= MSG_CTRUNC; 329 if (flags & LINUX_MSG_TRUNC) 330 ret_flags |= MSG_TRUNC; 331 if (flags & LINUX_MSG_DONTWAIT) 332 ret_flags |= MSG_DONTWAIT; 333 if (flags & LINUX_MSG_EOR) 334 ret_flags |= MSG_EOR; 335 if (flags & LINUX_MSG_WAITALL) 336 ret_flags |= MSG_WAITALL; 337 if (flags & LINUX_MSG_NOSIGNAL) 338 ret_flags |= MSG_NOSIGNAL; 339 #if 0 /* not handled */ 340 if (flags & LINUX_MSG_PROXY) 341 ; 342 if (flags & LINUX_MSG_FIN) 343 ; 344 if (flags & LINUX_MSG_SYN) 345 ; 346 if (flags & LINUX_MSG_CONFIRM) 347 ; 348 if (flags & LINUX_MSG_RST) 349 ; 350 if (flags & LINUX_MSG_ERRQUEUE) 351 ; 352 #endif 353 return ret_flags; 354 } 355 356 /* 357 * If bsd_to_linux_sockaddr() or linux_to_bsd_sockaddr() faults, then the 358 * native syscall will fault. Thus, we don't really need to check the 359 * return values for these functions. 360 */ 361 362 static int 363 bsd_to_linux_sockaddr(struct sockaddr *arg) 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 *(u_short *)&sa = sa.sa_family; 373 374 error = copyout(&sa, arg, sa_len); 375 376 return (error); 377 } 378 379 static int 380 linux_to_bsd_sockaddr(struct sockaddr *arg, int len) 381 { 382 struct sockaddr sa; 383 size_t sa_len = sizeof(struct sockaddr); 384 int error; 385 386 if ((error = copyin(arg, &sa, sa_len))) 387 return (error); 388 389 sa.sa_family = *(sa_family_t *)&sa; 390 sa.sa_len = len; 391 392 error = copyout(&sa, arg, sa_len); 393 394 return (error); 395 } 396 397 398 static int 399 linux_sa_put(struct osockaddr *osa) 400 { 401 struct osockaddr sa; 402 int error, bdom; 403 404 /* 405 * Only read/write the osockaddr family part, the rest is 406 * not changed. 407 */ 408 error = copyin(osa, &sa, sizeof(sa.sa_family)); 409 if (error) 410 return (error); 411 412 bdom = bsd_to_linux_domain(sa.sa_family); 413 if (bdom == -1) 414 return (EINVAL); 415 416 sa.sa_family = bdom; 417 error = copyout(&sa, osa, sizeof(sa.sa_family)); 418 if (error) 419 return (error); 420 421 return (0); 422 } 423 424 static int 425 linux_to_bsd_cmsg_type(int cmsg_type) 426 { 427 428 switch (cmsg_type) { 429 case LINUX_SCM_RIGHTS: 430 return (SCM_RIGHTS); 431 } 432 return (-1); 433 } 434 435 static int 436 bsd_to_linux_cmsg_type(int cmsg_type) 437 { 438 439 switch (cmsg_type) { 440 case SCM_RIGHTS: 441 return (LINUX_SCM_RIGHTS); 442 } 443 return (-1); 444 } 445 446 static int 447 linux_to_bsd_msghdr(struct msghdr *bhdr, const struct l_msghdr *lhdr) 448 { 449 if (lhdr->msg_controllen > INT_MAX) 450 return (ENOBUFS); 451 452 bhdr->msg_name = PTRIN(lhdr->msg_name); 453 bhdr->msg_namelen = lhdr->msg_namelen; 454 bhdr->msg_iov = PTRIN(lhdr->msg_iov); 455 bhdr->msg_iovlen = lhdr->msg_iovlen; 456 bhdr->msg_control = PTRIN(lhdr->msg_control); 457 bhdr->msg_controllen = lhdr->msg_controllen; 458 bhdr->msg_flags = linux_to_bsd_msg_flags(lhdr->msg_flags); 459 return (0); 460 } 461 462 static int 463 bsd_to_linux_msghdr(const struct msghdr *bhdr, struct l_msghdr *lhdr) 464 { 465 lhdr->msg_name = PTROUT(bhdr->msg_name); 466 lhdr->msg_namelen = bhdr->msg_namelen; 467 lhdr->msg_iov = PTROUT(bhdr->msg_iov); 468 lhdr->msg_iovlen = bhdr->msg_iovlen; 469 lhdr->msg_control = PTROUT(bhdr->msg_control); 470 lhdr->msg_controllen = bhdr->msg_controllen; 471 /* msg_flags skipped */ 472 return (0); 473 } 474 475 static int 476 linux_set_socket_flags(struct thread *td, int s, int flags) 477 { 478 int error; 479 480 if (flags & LINUX_SOCK_NONBLOCK) { 481 error = kern_fcntl(td, s, F_SETFL, O_NONBLOCK); 482 if (error) 483 return (error); 484 } 485 if (flags & LINUX_SOCK_CLOEXEC) { 486 error = kern_fcntl(td, s, F_SETFD, FD_CLOEXEC); 487 if (error) 488 return (error); 489 } 490 return (0); 491 } 492 493 static int 494 linux_sendit(struct thread *td, int s, struct msghdr *mp, int flags, 495 struct mbuf *control, enum uio_seg segflg) 496 { 497 struct sockaddr *to; 498 int error; 499 500 if (mp->msg_name != NULL) { 501 error = linux_getsockaddr(&to, mp->msg_name, mp->msg_namelen); 502 if (error) 503 return (error); 504 mp->msg_name = to; 505 } else 506 to = NULL; 507 508 error = kern_sendit(td, s, mp, linux_to_bsd_msg_flags(flags), control, 509 segflg); 510 511 if (to) 512 free(to, M_SONAME); 513 return (error); 514 } 515 516 /* Return 0 if IP_HDRINCL is set for the given socket. */ 517 static int 518 linux_check_hdrincl(struct thread *td, int s) 519 { 520 int error, optval, size_val; 521 522 size_val = sizeof(optval); 523 error = kern_getsockopt(td, s, IPPROTO_IP, IP_HDRINCL, 524 &optval, UIO_SYSSPACE, &size_val); 525 if (error) 526 return (error); 527 528 return (optval == 0); 529 } 530 531 struct linux_sendto_args { 532 int s; 533 l_uintptr_t msg; 534 int len; 535 int flags; 536 l_uintptr_t to; 537 int tolen; 538 }; 539 540 /* 541 * Updated sendto() when IP_HDRINCL is set: 542 * tweak endian-dependent fields in the IP packet. 543 */ 544 static int 545 linux_sendto_hdrincl(struct thread *td, struct linux_sendto_args *linux_args) 546 { 547 /* 548 * linux_ip_copysize defines how many bytes we should copy 549 * from the beginning of the IP packet before we customize it for BSD. 550 * It should include all the fields we modify (ip_len and ip_off). 551 */ 552 #define linux_ip_copysize 8 553 554 struct ip *packet; 555 struct msghdr msg; 556 struct iovec aiov[1]; 557 int error; 558 559 /* Check that the packet isn't too big or too small. */ 560 if (linux_args->len < linux_ip_copysize || 561 linux_args->len > IP_MAXPACKET) 562 return (EINVAL); 563 564 packet = (struct ip *)malloc(linux_args->len, M_TEMP, M_WAITOK); 565 566 /* Make kernel copy of the packet to be sent */ 567 if ((error = copyin(PTRIN(linux_args->msg), packet, 568 linux_args->len))) 569 goto goout; 570 571 /* Convert fields from Linux to BSD raw IP socket format */ 572 packet->ip_len = linux_args->len; 573 packet->ip_off = ntohs(packet->ip_off); 574 575 /* Prepare the msghdr and iovec structures describing the new packet */ 576 msg.msg_name = PTRIN(linux_args->to); 577 msg.msg_namelen = linux_args->tolen; 578 msg.msg_iov = aiov; 579 msg.msg_iovlen = 1; 580 msg.msg_control = NULL; 581 msg.msg_flags = 0; 582 aiov[0].iov_base = (char *)packet; 583 aiov[0].iov_len = linux_args->len; 584 error = linux_sendit(td, linux_args->s, &msg, linux_args->flags, 585 NULL, UIO_SYSSPACE); 586 goout: 587 free(packet, M_TEMP); 588 return (error); 589 } 590 591 struct linux_socket_args { 592 int domain; 593 int type; 594 int protocol; 595 }; 596 597 static int 598 linux_socket(struct thread *td, struct linux_socket_args *args) 599 { 600 struct socket_args /* { 601 int domain; 602 int type; 603 int protocol; 604 } */ bsd_args; 605 int retval_socket, socket_flags; 606 607 bsd_args.protocol = args->protocol; 608 socket_flags = args->type & ~LINUX_SOCK_TYPE_MASK; 609 if (socket_flags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK)) 610 return (EINVAL); 611 bsd_args.type = args->type & LINUX_SOCK_TYPE_MASK; 612 if (bsd_args.type < 0 || bsd_args.type > LINUX_SOCK_MAX) 613 return (EINVAL); 614 bsd_args.domain = linux_to_bsd_domain(args->domain); 615 if (bsd_args.domain == -1) 616 return (EAFNOSUPPORT); 617 618 retval_socket = socket(td, &bsd_args); 619 if (retval_socket) 620 return (retval_socket); 621 622 retval_socket = linux_set_socket_flags(td, td->td_retval[0], 623 socket_flags); 624 if (retval_socket) { 625 (void)kern_close(td, td->td_retval[0]); 626 goto out; 627 } 628 629 if (bsd_args.type == SOCK_RAW 630 && (bsd_args.protocol == IPPROTO_RAW || bsd_args.protocol == 0) 631 && bsd_args.domain == PF_INET) { 632 /* It's a raw IP socket: set the IP_HDRINCL option. */ 633 int hdrincl; 634 635 hdrincl = 1; 636 /* We ignore any error returned by kern_setsockopt() */ 637 kern_setsockopt(td, td->td_retval[0], IPPROTO_IP, IP_HDRINCL, 638 &hdrincl, UIO_SYSSPACE, sizeof(hdrincl)); 639 } 640 #ifdef INET6 641 /* 642 * Linux AF_INET6 socket has IPV6_V6ONLY setsockopt set to 0 by 643 * default and some apps depend on this. So, set V6ONLY to 0 644 * for Linux apps if the sysctl value is set to 1. 645 */ 646 if (bsd_args.domain == PF_INET6 647 #ifndef KLD_MODULE 648 /* 649 * XXX: Avoid undefined symbol error with an IPv4 only 650 * kernel. 651 */ 652 && V_ip6_v6only 653 #endif 654 ) { 655 int v6only; 656 657 v6only = 0; 658 /* We ignore any error returned by setsockopt() */ 659 kern_setsockopt(td, td->td_retval[0], IPPROTO_IPV6, IPV6_V6ONLY, 660 &v6only, UIO_SYSSPACE, sizeof(v6only)); 661 } 662 #endif 663 664 out: 665 return (retval_socket); 666 } 667 668 struct linux_bind_args { 669 int s; 670 l_uintptr_t name; 671 int namelen; 672 }; 673 674 static int 675 linux_bind(struct thread *td, struct linux_bind_args *args) 676 { 677 struct sockaddr *sa; 678 int error; 679 680 error = linux_getsockaddr(&sa, PTRIN(args->name), 681 args->namelen); 682 if (error) 683 return (error); 684 685 error = kern_bind(td, args->s, sa); 686 free(sa, M_SONAME); 687 if (error == EADDRNOTAVAIL && args->namelen != sizeof(struct sockaddr_in)) 688 return (EINVAL); 689 return (error); 690 } 691 692 struct linux_connect_args { 693 int s; 694 l_uintptr_t name; 695 int namelen; 696 }; 697 int linux_connect(struct thread *, struct linux_connect_args *); 698 699 int 700 linux_connect(struct thread *td, struct linux_connect_args *args) 701 { 702 struct socket *so; 703 struct sockaddr *sa; 704 u_int fflag; 705 int error; 706 707 error = linux_getsockaddr(&sa, (struct osockaddr *)PTRIN(args->name), 708 args->namelen); 709 if (error) 710 return (error); 711 712 error = kern_connect(td, args->s, sa); 713 free(sa, M_SONAME); 714 if (error != EISCONN) 715 return (error); 716 717 /* 718 * Linux doesn't return EISCONN the first time it occurs, 719 * when on a non-blocking socket. Instead it returns the 720 * error getsockopt(SOL_SOCKET, SO_ERROR) would return on BSD. 721 * 722 * XXXRW: Instead of using fgetsock(), check that it is a 723 * socket and use the file descriptor reference instead of 724 * creating a new one. 725 */ 726 error = fgetsock(td, args->s, &so, &fflag); 727 if (error == 0) { 728 error = EISCONN; 729 if (fflag & FNONBLOCK) { 730 SOCK_LOCK(so); 731 if (so->so_emuldata == 0) 732 error = so->so_error; 733 so->so_emuldata = (void *)1; 734 SOCK_UNLOCK(so); 735 } 736 fputsock(so); 737 } 738 return (error); 739 } 740 741 struct linux_listen_args { 742 int s; 743 int backlog; 744 }; 745 746 static int 747 linux_listen(struct thread *td, struct linux_listen_args *args) 748 { 749 struct listen_args /* { 750 int s; 751 int backlog; 752 } */ bsd_args; 753 754 bsd_args.s = args->s; 755 bsd_args.backlog = args->backlog; 756 return (listen(td, &bsd_args)); 757 } 758 759 static int 760 linux_accept_common(struct thread *td, int s, l_uintptr_t addr, 761 l_uintptr_t namelen, int flags) 762 { 763 struct accept_args /* { 764 int s; 765 struct sockaddr * __restrict name; 766 socklen_t * __restrict anamelen; 767 } */ bsd_args; 768 int error; 769 770 if (flags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK)) 771 return (EINVAL); 772 773 bsd_args.s = s; 774 /* XXX: */ 775 bsd_args.name = (struct sockaddr * __restrict)PTRIN(addr); 776 bsd_args.anamelen = PTRIN(namelen);/* XXX */ 777 error = accept(td, &bsd_args); 778 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.name); 779 if (error) { 780 if (error == EFAULT && namelen != sizeof(struct sockaddr_in)) 781 return (EINVAL); 782 return (error); 783 } 784 785 /* 786 * linux appears not to copy flags from the parent socket to the 787 * accepted one, so we must clear the flags in the new descriptor 788 * and apply the requested flags. 789 */ 790 error = kern_fcntl(td, td->td_retval[0], F_SETFL, 0); 791 if (error) 792 goto out; 793 error = linux_set_socket_flags(td, td->td_retval[0], flags); 794 if (error) 795 goto out; 796 if (addr) 797 error = linux_sa_put(PTRIN(addr)); 798 799 out: 800 if (error) { 801 (void)kern_close(td, td->td_retval[0]); 802 td->td_retval[0] = 0; 803 } 804 return (error); 805 } 806 807 struct linux_accept_args { 808 int s; 809 l_uintptr_t addr; 810 l_uintptr_t namelen; 811 }; 812 813 static int 814 linux_accept(struct thread *td, struct linux_accept_args *args) 815 { 816 817 return (linux_accept_common(td, args->s, args->addr, 818 args->namelen, 0)); 819 } 820 821 struct linux_accept4_args { 822 int s; 823 l_uintptr_t addr; 824 l_uintptr_t namelen; 825 int flags; 826 }; 827 828 static int 829 linux_accept4(struct thread *td, struct linux_accept4_args *args) 830 { 831 832 return (linux_accept_common(td, args->s, args->addr, 833 args->namelen, args->flags)); 834 } 835 836 struct linux_getsockname_args { 837 int s; 838 l_uintptr_t addr; 839 l_uintptr_t namelen; 840 }; 841 842 static int 843 linux_getsockname(struct thread *td, struct linux_getsockname_args *args) 844 { 845 struct getsockname_args /* { 846 int fdes; 847 struct sockaddr * __restrict asa; 848 socklen_t * __restrict alen; 849 } */ bsd_args; 850 int error; 851 852 bsd_args.fdes = args->s; 853 /* XXX: */ 854 bsd_args.asa = (struct sockaddr * __restrict)PTRIN(args->addr); 855 bsd_args.alen = PTRIN(args->namelen); /* XXX */ 856 error = getsockname(td, &bsd_args); 857 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.asa); 858 if (error) 859 return (error); 860 error = linux_sa_put(PTRIN(args->addr)); 861 if (error) 862 return (error); 863 return (0); 864 } 865 866 struct linux_getpeername_args { 867 int s; 868 l_uintptr_t addr; 869 l_uintptr_t namelen; 870 }; 871 872 static int 873 linux_getpeername(struct thread *td, struct linux_getpeername_args *args) 874 { 875 struct getpeername_args /* { 876 int fdes; 877 caddr_t asa; 878 int *alen; 879 } */ bsd_args; 880 int error; 881 882 bsd_args.fdes = args->s; 883 bsd_args.asa = (struct sockaddr *)PTRIN(args->addr); 884 bsd_args.alen = (int *)PTRIN(args->namelen); 885 error = getpeername(td, &bsd_args); 886 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.asa); 887 if (error) 888 return (error); 889 error = linux_sa_put(PTRIN(args->addr)); 890 if (error) 891 return (error); 892 return (0); 893 } 894 895 struct linux_socketpair_args { 896 int domain; 897 int type; 898 int protocol; 899 l_uintptr_t rsv; 900 }; 901 902 static int 903 linux_socketpair(struct thread *td, struct linux_socketpair_args *args) 904 { 905 struct socketpair_args /* { 906 int domain; 907 int type; 908 int protocol; 909 int *rsv; 910 } */ bsd_args; 911 int error, socket_flags; 912 int sv[2]; 913 914 bsd_args.domain = linux_to_bsd_domain(args->domain); 915 if (bsd_args.domain != PF_LOCAL) 916 return (EAFNOSUPPORT); 917 918 socket_flags = args->type & ~LINUX_SOCK_TYPE_MASK; 919 if (socket_flags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK)) 920 return (EINVAL); 921 bsd_args.type = args->type & LINUX_SOCK_TYPE_MASK; 922 if (bsd_args.type < 0 || bsd_args.type > LINUX_SOCK_MAX) 923 return (EINVAL); 924 925 if (args->protocol != 0 && args->protocol != PF_UNIX) 926 927 /* 928 * Use of PF_UNIX as protocol argument is not right, 929 * but Linux does it. 930 * Do not map PF_UNIX as its Linux value is identical 931 * to FreeBSD one. 932 */ 933 return (EPROTONOSUPPORT); 934 else 935 bsd_args.protocol = 0; 936 bsd_args.rsv = (int *)PTRIN(args->rsv); 937 error = kern_socketpair(td, bsd_args.domain, bsd_args.type, 938 bsd_args.protocol, sv); 939 if (error) 940 return (error); 941 error = linux_set_socket_flags(td, sv[0], socket_flags); 942 if (error) 943 goto out; 944 error = linux_set_socket_flags(td, sv[1], socket_flags); 945 if (error) 946 goto out; 947 948 error = copyout(sv, bsd_args.rsv, 2 * sizeof(int)); 949 950 out: 951 if (error) { 952 (void)kern_close(td, sv[0]); 953 (void)kern_close(td, sv[1]); 954 } 955 return (error); 956 } 957 958 struct linux_send_args { 959 int s; 960 l_uintptr_t msg; 961 int len; 962 int flags; 963 }; 964 965 static int 966 linux_send(struct thread *td, struct linux_send_args *args) 967 { 968 struct sendto_args /* { 969 int s; 970 caddr_t buf; 971 int len; 972 int flags; 973 caddr_t to; 974 int tolen; 975 } */ bsd_args; 976 977 bsd_args.s = args->s; 978 bsd_args.buf = (caddr_t)PTRIN(args->msg); 979 bsd_args.len = args->len; 980 bsd_args.flags = args->flags; 981 bsd_args.to = NULL; 982 bsd_args.tolen = 0; 983 return sendto(td, &bsd_args); 984 } 985 986 struct linux_recv_args { 987 int s; 988 l_uintptr_t msg; 989 int len; 990 int flags; 991 }; 992 993 static int 994 linux_recv(struct thread *td, struct linux_recv_args *args) 995 { 996 struct recvfrom_args /* { 997 int s; 998 caddr_t buf; 999 int len; 1000 int flags; 1001 struct sockaddr *from; 1002 socklen_t fromlenaddr; 1003 } */ bsd_args; 1004 1005 bsd_args.s = args->s; 1006 bsd_args.buf = (caddr_t)PTRIN(args->msg); 1007 bsd_args.len = args->len; 1008 bsd_args.flags = linux_to_bsd_msg_flags(args->flags); 1009 bsd_args.from = NULL; 1010 bsd_args.fromlenaddr = 0; 1011 return (recvfrom(td, &bsd_args)); 1012 } 1013 1014 static int 1015 linux_sendto(struct thread *td, struct linux_sendto_args *args) 1016 { 1017 struct msghdr msg; 1018 struct iovec aiov; 1019 int error; 1020 1021 if (linux_check_hdrincl(td, args->s) == 0) 1022 /* IP_HDRINCL set, tweak the packet before sending */ 1023 return (linux_sendto_hdrincl(td, args)); 1024 1025 msg.msg_name = PTRIN(args->to); 1026 msg.msg_namelen = args->tolen; 1027 msg.msg_iov = &aiov; 1028 msg.msg_iovlen = 1; 1029 msg.msg_control = NULL; 1030 msg.msg_flags = 0; 1031 aiov.iov_base = PTRIN(args->msg); 1032 aiov.iov_len = args->len; 1033 error = linux_sendit(td, args->s, &msg, args->flags, NULL, 1034 UIO_USERSPACE); 1035 return (error); 1036 } 1037 1038 struct linux_recvfrom_args { 1039 int s; 1040 l_uintptr_t buf; 1041 int len; 1042 int flags; 1043 l_uintptr_t from; 1044 l_uintptr_t fromlen; 1045 }; 1046 1047 static int 1048 linux_recvfrom(struct thread *td, struct linux_recvfrom_args *args) 1049 { 1050 struct recvfrom_args /* { 1051 int s; 1052 caddr_t buf; 1053 size_t len; 1054 int flags; 1055 struct sockaddr * __restrict from; 1056 socklen_t * __restrict fromlenaddr; 1057 } */ bsd_args; 1058 size_t len; 1059 int error; 1060 1061 if ((error = copyin(PTRIN(args->fromlen), &len, sizeof(size_t)))) 1062 return (error); 1063 1064 bsd_args.s = args->s; 1065 bsd_args.buf = PTRIN(args->buf); 1066 bsd_args.len = args->len; 1067 bsd_args.flags = linux_to_bsd_msg_flags(args->flags); 1068 /* XXX: */ 1069 bsd_args.from = (struct sockaddr * __restrict)PTRIN(args->from); 1070 bsd_args.fromlenaddr = PTRIN(args->fromlen);/* XXX */ 1071 1072 linux_to_bsd_sockaddr((struct sockaddr *)bsd_args.from, len); 1073 error = recvfrom(td, &bsd_args); 1074 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.from); 1075 1076 if (error) 1077 return (error); 1078 if (args->from) { 1079 error = linux_sa_put((struct osockaddr *) 1080 PTRIN(args->from)); 1081 if (error) 1082 return (error); 1083 } 1084 return (0); 1085 } 1086 1087 struct linux_sendmsg_args { 1088 int s; 1089 l_uintptr_t msg; 1090 int flags; 1091 }; 1092 1093 static int 1094 linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args) 1095 { 1096 struct cmsghdr *cmsg; 1097 struct mbuf *control; 1098 struct msghdr msg; 1099 struct l_cmsghdr linux_cmsg; 1100 struct l_cmsghdr *ptr_cmsg; 1101 struct l_msghdr linux_msg; 1102 struct iovec *iov; 1103 socklen_t datalen; 1104 void *data; 1105 int error; 1106 1107 error = copyin(PTRIN(args->msg), &linux_msg, sizeof(linux_msg)); 1108 if (error) 1109 return (error); 1110 error = linux_to_bsd_msghdr(&msg, &linux_msg); 1111 if (error) 1112 return (error); 1113 1114 /* 1115 * Some Linux applications (ping) define a non-NULL control data 1116 * pointer, but a msg_controllen of 0, which is not allowed in the 1117 * FreeBSD system call interface. NULL the msg_control pointer in 1118 * order to handle this case. This should be checked, but allows the 1119 * Linux ping to work. 1120 */ 1121 if (msg.msg_control != NULL && msg.msg_controllen == 0) 1122 msg.msg_control = NULL; 1123 1124 #ifdef COMPAT_LINUX32 1125 error = linux32_copyiniov(PTRIN(msg.msg_iov), msg.msg_iovlen, 1126 &iov, EMSGSIZE); 1127 #else 1128 error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE); 1129 #endif 1130 if (error) 1131 return (error); 1132 1133 if (msg.msg_control != NULL) { 1134 error = ENOBUFS; 1135 cmsg = malloc(CMSG_HDRSZ, M_TEMP, M_WAITOK | M_ZERO); 1136 control = m_get(M_WAIT, MT_CONTROL); 1137 if (control == NULL) 1138 goto bad; 1139 ptr_cmsg = LINUX_CMSG_FIRSTHDR(&msg); 1140 1141 do { 1142 error = copyin(ptr_cmsg, &linux_cmsg, 1143 sizeof(struct l_cmsghdr)); 1144 if (error) 1145 goto bad; 1146 1147 error = EINVAL; 1148 if (linux_cmsg.cmsg_len < sizeof(struct l_cmsghdr)) 1149 goto bad; 1150 1151 /* 1152 * Now we support only SCM_RIGHTS, so return EINVAL 1153 * in any other cmsg_type 1154 */ 1155 if ((cmsg->cmsg_type = 1156 linux_to_bsd_cmsg_type(linux_cmsg.cmsg_type)) == -1) 1157 goto bad; 1158 cmsg->cmsg_level = 1159 linux_to_bsd_sockopt_level(linux_cmsg.cmsg_level); 1160 1161 datalen = linux_cmsg.cmsg_len - L_CMSG_HDRSZ; 1162 cmsg->cmsg_len = CMSG_LEN(datalen); 1163 data = LINUX_CMSG_DATA(ptr_cmsg); 1164 1165 error = ENOBUFS; 1166 if (!m_append(control, CMSG_HDRSZ, (c_caddr_t) cmsg)) 1167 goto bad; 1168 if (!m_append(control, datalen, (c_caddr_t) data)) 1169 goto bad; 1170 } while ((ptr_cmsg = LINUX_CMSG_NXTHDR(&msg, ptr_cmsg))); 1171 } else { 1172 control = NULL; 1173 cmsg = NULL; 1174 } 1175 1176 msg.msg_iov = iov; 1177 msg.msg_flags = 0; 1178 error = linux_sendit(td, args->s, &msg, args->flags, control, 1179 UIO_USERSPACE); 1180 1181 bad: 1182 free(iov, M_IOV); 1183 if (cmsg) 1184 free(cmsg, M_TEMP); 1185 return (error); 1186 } 1187 1188 struct linux_recvmsg_args { 1189 int s; 1190 l_uintptr_t msg; 1191 int flags; 1192 }; 1193 1194 static int 1195 linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args) 1196 { 1197 struct cmsghdr *cm; 1198 struct msghdr msg; 1199 struct l_cmsghdr *linux_cmsg = NULL; 1200 socklen_t datalen, outlen, clen; 1201 struct l_msghdr linux_msg; 1202 struct iovec *iov, *uiov; 1203 struct mbuf *control = NULL; 1204 struct mbuf **controlp; 1205 caddr_t outbuf; 1206 void *data; 1207 int error, i, fd, fds, *fdp; 1208 1209 error = copyin(PTRIN(args->msg), &linux_msg, sizeof(linux_msg)); 1210 if (error) 1211 return (error); 1212 1213 error = linux_to_bsd_msghdr(&msg, &linux_msg); 1214 if (error) 1215 return (error); 1216 1217 #ifdef COMPAT_LINUX32 1218 error = linux32_copyiniov(PTRIN(msg.msg_iov), msg.msg_iovlen, 1219 &iov, EMSGSIZE); 1220 #else 1221 error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE); 1222 #endif 1223 if (error) 1224 return (error); 1225 1226 if (msg.msg_name) { 1227 error = linux_to_bsd_sockaddr((struct sockaddr *)msg.msg_name, 1228 msg.msg_namelen); 1229 if (error) 1230 goto bad; 1231 } 1232 1233 uiov = msg.msg_iov; 1234 msg.msg_iov = iov; 1235 controlp = (msg.msg_control != NULL) ? &control : NULL; 1236 error = kern_recvit(td, args->s, &msg, UIO_USERSPACE, controlp); 1237 msg.msg_iov = uiov; 1238 if (error) 1239 goto bad; 1240 1241 error = bsd_to_linux_msghdr(&msg, &linux_msg); 1242 if (error) 1243 goto bad; 1244 1245 if (linux_msg.msg_name) { 1246 error = bsd_to_linux_sockaddr((struct sockaddr *) 1247 PTRIN(linux_msg.msg_name)); 1248 if (error) 1249 goto bad; 1250 } 1251 if (linux_msg.msg_name && linux_msg.msg_namelen > 2) { 1252 error = linux_sa_put(PTRIN(linux_msg.msg_name)); 1253 if (error) 1254 goto bad; 1255 } 1256 1257 if (control) { 1258 1259 linux_cmsg = malloc(L_CMSG_HDRSZ, M_TEMP, M_WAITOK | M_ZERO); 1260 outbuf = PTRIN(linux_msg.msg_control); 1261 cm = mtod(control, struct cmsghdr *); 1262 outlen = 0; 1263 clen = control->m_len; 1264 1265 while (cm != NULL) { 1266 1267 if ((linux_cmsg->cmsg_type = 1268 bsd_to_linux_cmsg_type(cm->cmsg_type)) == -1) 1269 { 1270 error = EINVAL; 1271 goto bad; 1272 } 1273 data = CMSG_DATA(cm); 1274 datalen = (caddr_t)cm + cm->cmsg_len - (caddr_t)data; 1275 1276 switch (linux_cmsg->cmsg_type) 1277 { 1278 case LINUX_SCM_RIGHTS: 1279 if (outlen + LINUX_CMSG_LEN(datalen) > 1280 linux_msg.msg_controllen) { 1281 if (outlen == 0) { 1282 error = EMSGSIZE; 1283 goto bad; 1284 } else { 1285 linux_msg.msg_flags |= 1286 LINUX_MSG_CTRUNC; 1287 goto out; 1288 } 1289 } 1290 if (args->flags & LINUX_MSG_CMSG_CLOEXEC) { 1291 fds = datalen / sizeof(int); 1292 fdp = data; 1293 for (i = 0; i < fds; i++) { 1294 fd = *fdp++; 1295 (void)kern_fcntl(td, fd, 1296 F_SETFD, FD_CLOEXEC); 1297 } 1298 } 1299 break; 1300 } 1301 1302 linux_cmsg->cmsg_len = LINUX_CMSG_LEN(datalen); 1303 linux_cmsg->cmsg_level = 1304 bsd_to_linux_sockopt_level(cm->cmsg_level); 1305 1306 error = copyout(linux_cmsg, outbuf, L_CMSG_HDRSZ); 1307 if (error) 1308 goto bad; 1309 outbuf += L_CMSG_HDRSZ; 1310 1311 error = copyout(data, outbuf, datalen); 1312 if (error) 1313 goto bad; 1314 1315 outbuf += LINUX_CMSG_ALIGN(datalen); 1316 outlen += LINUX_CMSG_LEN(datalen); 1317 linux_msg.msg_controllen = outlen; 1318 1319 if (CMSG_SPACE(datalen) < clen) { 1320 clen -= CMSG_SPACE(datalen); 1321 cm = (struct cmsghdr *) 1322 ((caddr_t)cm + CMSG_SPACE(datalen)); 1323 } else 1324 cm = NULL; 1325 } 1326 } 1327 1328 out: 1329 error = copyout(&linux_msg, PTRIN(args->msg), sizeof(linux_msg)); 1330 1331 bad: 1332 free(iov, M_IOV); 1333 if (control != NULL) 1334 m_freem(control); 1335 if (linux_cmsg != NULL) 1336 free(linux_cmsg, M_TEMP); 1337 1338 return (error); 1339 } 1340 1341 struct linux_shutdown_args { 1342 int s; 1343 int how; 1344 }; 1345 1346 static int 1347 linux_shutdown(struct thread *td, struct linux_shutdown_args *args) 1348 { 1349 struct shutdown_args /* { 1350 int s; 1351 int how; 1352 } */ bsd_args; 1353 1354 bsd_args.s = args->s; 1355 bsd_args.how = args->how; 1356 return (shutdown(td, &bsd_args)); 1357 } 1358 1359 struct linux_setsockopt_args { 1360 int s; 1361 int level; 1362 int optname; 1363 l_uintptr_t optval; 1364 int optlen; 1365 }; 1366 1367 static int 1368 linux_setsockopt(struct thread *td, struct linux_setsockopt_args *args) 1369 { 1370 struct setsockopt_args /* { 1371 int s; 1372 int level; 1373 int name; 1374 caddr_t val; 1375 int valsize; 1376 } */ bsd_args; 1377 l_timeval linux_tv; 1378 struct timeval tv; 1379 int error, name; 1380 1381 bsd_args.s = args->s; 1382 bsd_args.level = linux_to_bsd_sockopt_level(args->level); 1383 switch (bsd_args.level) { 1384 case SOL_SOCKET: 1385 name = linux_to_bsd_so_sockopt(args->optname); 1386 switch (name) { 1387 case SO_RCVTIMEO: 1388 /* FALLTHROUGH */ 1389 case SO_SNDTIMEO: 1390 error = copyin(PTRIN(args->optval), &linux_tv, 1391 sizeof(linux_tv)); 1392 if (error) 1393 return (error); 1394 tv.tv_sec = linux_tv.tv_sec; 1395 tv.tv_usec = linux_tv.tv_usec; 1396 return (kern_setsockopt(td, args->s, bsd_args.level, 1397 name, &tv, UIO_SYSSPACE, sizeof(tv))); 1398 /* NOTREACHED */ 1399 break; 1400 default: 1401 break; 1402 } 1403 break; 1404 case IPPROTO_IP: 1405 name = linux_to_bsd_ip_sockopt(args->optname); 1406 break; 1407 case IPPROTO_TCP: 1408 /* Linux TCP option values match BSD's */ 1409 name = args->optname; 1410 break; 1411 default: 1412 name = -1; 1413 break; 1414 } 1415 if (name == -1) 1416 return (ENOPROTOOPT); 1417 1418 bsd_args.name = name; 1419 bsd_args.val = PTRIN(args->optval); 1420 bsd_args.valsize = args->optlen; 1421 1422 if (name == IPV6_NEXTHOP) { 1423 linux_to_bsd_sockaddr((struct sockaddr *)bsd_args.val, 1424 bsd_args.valsize); 1425 error = setsockopt(td, &bsd_args); 1426 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.val); 1427 } else 1428 error = setsockopt(td, &bsd_args); 1429 1430 return (error); 1431 } 1432 1433 struct linux_getsockopt_args { 1434 int s; 1435 int level; 1436 int optname; 1437 l_uintptr_t optval; 1438 l_uintptr_t optlen; 1439 }; 1440 1441 static int 1442 linux_getsockopt(struct thread *td, struct linux_getsockopt_args *args) 1443 { 1444 struct getsockopt_args /* { 1445 int s; 1446 int level; 1447 int name; 1448 caddr_t val; 1449 int *avalsize; 1450 } */ bsd_args; 1451 l_timeval linux_tv; 1452 struct timeval tv; 1453 socklen_t tv_len, xulen; 1454 struct xucred xu; 1455 struct l_ucred lxu; 1456 int error, name; 1457 1458 bsd_args.s = args->s; 1459 bsd_args.level = linux_to_bsd_sockopt_level(args->level); 1460 switch (bsd_args.level) { 1461 case SOL_SOCKET: 1462 name = linux_to_bsd_so_sockopt(args->optname); 1463 switch (name) { 1464 case SO_RCVTIMEO: 1465 /* FALLTHROUGH */ 1466 case SO_SNDTIMEO: 1467 tv_len = sizeof(tv); 1468 error = kern_getsockopt(td, args->s, bsd_args.level, 1469 name, &tv, UIO_SYSSPACE, &tv_len); 1470 if (error) 1471 return (error); 1472 linux_tv.tv_sec = tv.tv_sec; 1473 linux_tv.tv_usec = tv.tv_usec; 1474 return (copyout(&linux_tv, PTRIN(args->optval), 1475 sizeof(linux_tv))); 1476 /* NOTREACHED */ 1477 break; 1478 case LOCAL_PEERCRED: 1479 if (args->optlen != sizeof(lxu)) 1480 return (EINVAL); 1481 xulen = sizeof(xu); 1482 error = kern_getsockopt(td, args->s, bsd_args.level, 1483 name, &xu, UIO_SYSSPACE, &xulen); 1484 if (error) 1485 return (error); 1486 /* 1487 * XXX Use 0 for pid as the FreeBSD does not cache peer pid. 1488 */ 1489 lxu.pid = 0; 1490 lxu.uid = xu.cr_uid; 1491 lxu.gid = xu.cr_gid; 1492 return (copyout(&lxu, PTRIN(args->optval), sizeof(lxu))); 1493 /* NOTREACHED */ 1494 break; 1495 default: 1496 break; 1497 } 1498 break; 1499 case IPPROTO_IP: 1500 name = linux_to_bsd_ip_sockopt(args->optname); 1501 break; 1502 case IPPROTO_TCP: 1503 /* Linux TCP option values match BSD's */ 1504 name = args->optname; 1505 break; 1506 default: 1507 name = -1; 1508 break; 1509 } 1510 if (name == -1) 1511 return (EINVAL); 1512 1513 bsd_args.name = name; 1514 bsd_args.val = PTRIN(args->optval); 1515 bsd_args.avalsize = PTRIN(args->optlen); 1516 1517 if (name == IPV6_NEXTHOP) { 1518 error = getsockopt(td, &bsd_args); 1519 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.val); 1520 } else 1521 error = getsockopt(td, &bsd_args); 1522 1523 return (error); 1524 } 1525 1526 /* Argument list sizes for linux_socketcall */ 1527 1528 #define LINUX_AL(x) ((x) * sizeof(l_ulong)) 1529 1530 static const unsigned char lxs_args[] = { 1531 LINUX_AL(0) /* unused*/, LINUX_AL(3) /* socket */, 1532 LINUX_AL(3) /* bind */, LINUX_AL(3) /* connect */, 1533 LINUX_AL(2) /* listen */, LINUX_AL(3) /* accept */, 1534 LINUX_AL(3) /* getsockname */, LINUX_AL(3) /* getpeername */, 1535 LINUX_AL(4) /* socketpair */, LINUX_AL(4) /* send */, 1536 LINUX_AL(4) /* recv */, LINUX_AL(6) /* sendto */, 1537 LINUX_AL(6) /* recvfrom */, LINUX_AL(2) /* shutdown */, 1538 LINUX_AL(5) /* setsockopt */, LINUX_AL(5) /* getsockopt */, 1539 LINUX_AL(3) /* sendmsg */, LINUX_AL(3) /* recvmsg */, 1540 LINUX_AL(4) /* accept4 */ 1541 }; 1542 1543 #define LINUX_AL_SIZE sizeof(lxs_args) / sizeof(lxs_args[0]) - 1 1544 1545 int 1546 linux_socketcall(struct thread *td, struct linux_socketcall_args *args) 1547 { 1548 l_ulong a[6]; 1549 void *arg; 1550 int error; 1551 1552 if (args->what < LINUX_SOCKET || args->what > LINUX_AL_SIZE) 1553 return (EINVAL); 1554 error = copyin(PTRIN(args->args), a, lxs_args[args->what]); 1555 if (error) 1556 return (error); 1557 1558 arg = a; 1559 switch (args->what) { 1560 case LINUX_SOCKET: 1561 return (linux_socket(td, arg)); 1562 case LINUX_BIND: 1563 return (linux_bind(td, arg)); 1564 case LINUX_CONNECT: 1565 return (linux_connect(td, arg)); 1566 case LINUX_LISTEN: 1567 return (linux_listen(td, arg)); 1568 case LINUX_ACCEPT: 1569 return (linux_accept(td, arg)); 1570 case LINUX_GETSOCKNAME: 1571 return (linux_getsockname(td, arg)); 1572 case LINUX_GETPEERNAME: 1573 return (linux_getpeername(td, arg)); 1574 case LINUX_SOCKETPAIR: 1575 return (linux_socketpair(td, arg)); 1576 case LINUX_SEND: 1577 return (linux_send(td, arg)); 1578 case LINUX_RECV: 1579 return (linux_recv(td, arg)); 1580 case LINUX_SENDTO: 1581 return (linux_sendto(td, arg)); 1582 case LINUX_RECVFROM: 1583 return (linux_recvfrom(td, arg)); 1584 case LINUX_SHUTDOWN: 1585 return (linux_shutdown(td, arg)); 1586 case LINUX_SETSOCKOPT: 1587 return (linux_setsockopt(td, arg)); 1588 case LINUX_GETSOCKOPT: 1589 return (linux_getsockopt(td, arg)); 1590 case LINUX_SENDMSG: 1591 return (linux_sendmsg(td, arg)); 1592 case LINUX_RECVMSG: 1593 return (linux_recvmsg(td, arg)); 1594 case LINUX_ACCEPT4: 1595 return (linux_accept4(td, arg)); 1596 } 1597 1598 uprintf("LINUX: 'socket' typ=%d not implemented\n", args->what); 1599 return (ENOSYS); 1600 } 1601