linux_socket.c revision 247764
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 247764 2013-03-04 02:21:34Z eadler $"); 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/capability.h> 41#include <sys/fcntl.h> 42#include <sys/file.h> 43#include <sys/limits.h> 44#include <sys/lock.h> 45#include <sys/malloc.h> 46#include <sys/mutex.h> 47#include <sys/mbuf.h> 48#include <sys/socket.h> 49#include <sys/socketvar.h> 50#include <sys/syscallsubr.h> 51#include <sys/uio.h> 52#include <sys/syslog.h> 53#include <sys/un.h> 54 55#include <net/if.h> 56#include <netinet/in.h> 57#include <netinet/in_systm.h> 58#include <netinet/ip.h> 59#include <netinet/tcp.h> 60#ifdef INET6 61#include <netinet/ip6.h> 62#include <netinet6/ip6_var.h> 63#include <netinet6/in6_var.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 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 * Copy the osockaddr structure pointed to by osa to kernel, adjust 82 * family and convert to sockaddr. 83 */ 84static int 85linux_getsockaddr(struct sockaddr **sap, const struct osockaddr *osa, int salen) 86{ 87 struct sockaddr *sa; 88 struct osockaddr *kosa; 89#ifdef INET6 90 struct sockaddr_in6 *sin6; 91 int oldv6size; 92#endif 93 char *name; 94 int bdom, error, hdrlen, namelen; 95 96 if (salen < 2 || salen > UCHAR_MAX || !osa) 97 return (EINVAL); 98 99#ifdef INET6 100 oldv6size = 0; 101 /* 102 * Check for old (pre-RFC2553) sockaddr_in6. We may accept it 103 * if it's a v4-mapped address, so reserve the proper space 104 * for it. 105 */ 106 if (salen == sizeof(struct sockaddr_in6) - sizeof(uint32_t)) { 107 salen += sizeof(uint32_t); 108 oldv6size = 1; 109 } 110#endif 111 112 kosa = malloc(salen, M_SONAME, M_WAITOK); 113 114 if ((error = copyin(osa, kosa, salen))) 115 goto out; 116 117 bdom = linux_to_bsd_domain(kosa->sa_family); 118 if (bdom == -1) { 119 error = EAFNOSUPPORT; 120 goto out; 121 } 122 123#ifdef INET6 124 /* 125 * Older Linux IPv6 code uses obsolete RFC2133 struct sockaddr_in6, 126 * which lacks the scope id compared with RFC2553 one. If we detect 127 * the situation, reject the address and write a message to system log. 128 * 129 * Still accept addresses for which the scope id is not used. 130 */ 131 if (oldv6size) { 132 if (bdom == AF_INET6) { 133 sin6 = (struct sockaddr_in6 *)kosa; 134 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr) || 135 (!IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) && 136 !IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) && 137 !IN6_IS_ADDR_V4COMPAT(&sin6->sin6_addr) && 138 !IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 139 !IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))) { 140 sin6->sin6_scope_id = 0; 141 } else { 142 log(LOG_DEBUG, 143 "obsolete pre-RFC2553 sockaddr_in6 rejected\n"); 144 error = EINVAL; 145 goto out; 146 } 147 } else 148 salen -= sizeof(uint32_t); 149 } 150#endif 151 if (bdom == AF_INET) { 152 if (salen < sizeof(struct sockaddr_in)) { 153 error = EINVAL; 154 goto out; 155 } 156 salen = sizeof(struct sockaddr_in); 157 } 158 159 if (bdom == AF_LOCAL && salen > sizeof(struct sockaddr_un)) { 160 hdrlen = offsetof(struct sockaddr_un, sun_path); 161 name = ((struct sockaddr_un *)kosa)->sun_path; 162 if (*name == '\0') { 163 /* 164 * Linux abstract namespace starts with a NULL byte. 165 * XXX We do not support abstract namespace yet. 166 */ 167 namelen = strnlen(name + 1, salen - hdrlen - 1) + 1; 168 } else 169 namelen = strnlen(name, salen - hdrlen); 170 salen = hdrlen + namelen; 171 if (salen > sizeof(struct sockaddr_un)) { 172 error = ENAMETOOLONG; 173 goto out; 174 } 175 } 176 177 sa = (struct sockaddr *)kosa; 178 sa->sa_family = bdom; 179 sa->sa_len = salen; 180 181 *sap = sa; 182 return (0); 183 184out: 185 free(kosa, M_SONAME); 186 return (error); 187} 188 189static int 190linux_to_bsd_domain(int domain) 191{ 192 193 switch (domain) { 194 case LINUX_AF_UNSPEC: 195 return (AF_UNSPEC); 196 case LINUX_AF_UNIX: 197 return (AF_LOCAL); 198 case LINUX_AF_INET: 199 return (AF_INET); 200 case LINUX_AF_INET6: 201 return (AF_INET6); 202 case LINUX_AF_AX25: 203 return (AF_CCITT); 204 case LINUX_AF_IPX: 205 return (AF_IPX); 206 case LINUX_AF_APPLETALK: 207 return (AF_APPLETALK); 208 } 209 return (-1); 210} 211 212static int 213bsd_to_linux_domain(int domain) 214{ 215 216 switch (domain) { 217 case AF_UNSPEC: 218 return (LINUX_AF_UNSPEC); 219 case AF_LOCAL: 220 return (LINUX_AF_UNIX); 221 case AF_INET: 222 return (LINUX_AF_INET); 223 case AF_INET6: 224 return (LINUX_AF_INET6); 225 case AF_CCITT: 226 return (LINUX_AF_AX25); 227 case AF_IPX: 228 return (LINUX_AF_IPX); 229 case AF_APPLETALK: 230 return (LINUX_AF_APPLETALK); 231 } 232 return (-1); 233} 234 235static int 236linux_to_bsd_sockopt_level(int level) 237{ 238 239 switch (level) { 240 case LINUX_SOL_SOCKET: 241 return (SOL_SOCKET); 242 } 243 return (level); 244} 245 246static int 247bsd_to_linux_sockopt_level(int level) 248{ 249 250 switch (level) { 251 case SOL_SOCKET: 252 return (LINUX_SOL_SOCKET); 253 } 254 return (level); 255} 256 257static int 258linux_to_bsd_ip_sockopt(int opt) 259{ 260 261 switch (opt) { 262 case LINUX_IP_TOS: 263 return (IP_TOS); 264 case LINUX_IP_TTL: 265 return (IP_TTL); 266 case LINUX_IP_OPTIONS: 267 return (IP_OPTIONS); 268 case LINUX_IP_MULTICAST_IF: 269 return (IP_MULTICAST_IF); 270 case LINUX_IP_MULTICAST_TTL: 271 return (IP_MULTICAST_TTL); 272 case LINUX_IP_MULTICAST_LOOP: 273 return (IP_MULTICAST_LOOP); 274 case LINUX_IP_ADD_MEMBERSHIP: 275 return (IP_ADD_MEMBERSHIP); 276 case LINUX_IP_DROP_MEMBERSHIP: 277 return (IP_DROP_MEMBERSHIP); 278 case LINUX_IP_HDRINCL: 279 return (IP_HDRINCL); 280 } 281 return (-1); 282} 283 284static int 285linux_to_bsd_so_sockopt(int opt) 286{ 287 288 switch (opt) { 289 case LINUX_SO_DEBUG: 290 return (SO_DEBUG); 291 case LINUX_SO_REUSEADDR: 292 return (SO_REUSEADDR); 293 case LINUX_SO_TYPE: 294 return (SO_TYPE); 295 case LINUX_SO_ERROR: 296 return (SO_ERROR); 297 case LINUX_SO_DONTROUTE: 298 return (SO_DONTROUTE); 299 case LINUX_SO_BROADCAST: 300 return (SO_BROADCAST); 301 case LINUX_SO_SNDBUF: 302 return (SO_SNDBUF); 303 case LINUX_SO_RCVBUF: 304 return (SO_RCVBUF); 305 case LINUX_SO_KEEPALIVE: 306 return (SO_KEEPALIVE); 307 case LINUX_SO_OOBINLINE: 308 return (SO_OOBINLINE); 309 case LINUX_SO_LINGER: 310 return (SO_LINGER); 311 case LINUX_SO_PEERCRED: 312 return (LOCAL_PEERCRED); 313 case LINUX_SO_RCVLOWAT: 314 return (SO_RCVLOWAT); 315 case LINUX_SO_SNDLOWAT: 316 return (SO_SNDLOWAT); 317 case LINUX_SO_RCVTIMEO: 318 return (SO_RCVTIMEO); 319 case LINUX_SO_SNDTIMEO: 320 return (SO_SNDTIMEO); 321 case LINUX_SO_TIMESTAMP: 322 return (SO_TIMESTAMP); 323 case LINUX_SO_ACCEPTCONN: 324 return (SO_ACCEPTCONN); 325 } 326 return (-1); 327} 328 329static int 330linux_to_bsd_tcp_sockopt(int opt) 331{ 332 333 switch (opt) { 334 case LINUX_TCP_NODELAY: 335 return (TCP_NODELAY); 336 case LINUX_TCP_MAXSEG: 337 return (TCP_MAXSEG); 338 case LINUX_TCP_KEEPIDLE: 339 return (TCP_KEEPIDLE); 340 case LINUX_TCP_KEEPINTVL: 341 return (TCP_KEEPINTVL); 342 case LINUX_TCP_KEEPCNT: 343 return (TCP_KEEPCNT); 344 case LINUX_TCP_MD5SIG: 345 return (TCP_MD5SIG); 346 } 347 return (-1); 348} 349 350static int 351linux_to_bsd_msg_flags(int flags) 352{ 353 int ret_flags = 0; 354 355 if (flags & LINUX_MSG_OOB) 356 ret_flags |= MSG_OOB; 357 if (flags & LINUX_MSG_PEEK) 358 ret_flags |= MSG_PEEK; 359 if (flags & LINUX_MSG_DONTROUTE) 360 ret_flags |= MSG_DONTROUTE; 361 if (flags & LINUX_MSG_CTRUNC) 362 ret_flags |= MSG_CTRUNC; 363 if (flags & LINUX_MSG_TRUNC) 364 ret_flags |= MSG_TRUNC; 365 if (flags & LINUX_MSG_DONTWAIT) 366 ret_flags |= MSG_DONTWAIT; 367 if (flags & LINUX_MSG_EOR) 368 ret_flags |= MSG_EOR; 369 if (flags & LINUX_MSG_WAITALL) 370 ret_flags |= MSG_WAITALL; 371 if (flags & LINUX_MSG_NOSIGNAL) 372 ret_flags |= MSG_NOSIGNAL; 373#if 0 /* not handled */ 374 if (flags & LINUX_MSG_PROXY) 375 ; 376 if (flags & LINUX_MSG_FIN) 377 ; 378 if (flags & LINUX_MSG_SYN) 379 ; 380 if (flags & LINUX_MSG_CONFIRM) 381 ; 382 if (flags & LINUX_MSG_RST) 383 ; 384 if (flags & LINUX_MSG_ERRQUEUE) 385 ; 386#endif 387 return ret_flags; 388} 389 390/* 391* If bsd_to_linux_sockaddr() or linux_to_bsd_sockaddr() faults, then the 392* native syscall will fault. Thus, we don't really need to check the 393* return values for these functions. 394*/ 395 396static int 397bsd_to_linux_sockaddr(struct sockaddr *arg) 398{ 399 struct sockaddr sa; 400 size_t sa_len = sizeof(struct sockaddr); 401 int error; 402 403 if ((error = copyin(arg, &sa, sa_len))) 404 return (error); 405 406 *(u_short *)&sa = sa.sa_family; 407 408 error = copyout(&sa, arg, sa_len); 409 410 return (error); 411} 412 413static int 414linux_to_bsd_sockaddr(struct sockaddr *arg, int len) 415{ 416 struct sockaddr sa; 417 size_t sa_len = sizeof(struct sockaddr); 418 int error; 419 420 if ((error = copyin(arg, &sa, sa_len))) 421 return (error); 422 423 sa.sa_family = *(sa_family_t *)&sa; 424 sa.sa_len = len; 425 426 error = copyout(&sa, arg, sa_len); 427 428 return (error); 429} 430 431 432static int 433linux_sa_put(struct osockaddr *osa) 434{ 435 struct osockaddr sa; 436 int error, bdom; 437 438 /* 439 * Only read/write the osockaddr family part, the rest is 440 * not changed. 441 */ 442 error = copyin(osa, &sa, sizeof(sa.sa_family)); 443 if (error) 444 return (error); 445 446 bdom = bsd_to_linux_domain(sa.sa_family); 447 if (bdom == -1) 448 return (EINVAL); 449 450 sa.sa_family = bdom; 451 error = copyout(&sa, osa, sizeof(sa.sa_family)); 452 if (error) 453 return (error); 454 455 return (0); 456} 457 458static int 459linux_to_bsd_cmsg_type(int cmsg_type) 460{ 461 462 switch (cmsg_type) { 463 case LINUX_SCM_RIGHTS: 464 return (SCM_RIGHTS); 465 case LINUX_SCM_CREDENTIALS: 466 return (SCM_CREDS); 467 } 468 return (-1); 469} 470 471static int 472bsd_to_linux_cmsg_type(int cmsg_type) 473{ 474 475 switch (cmsg_type) { 476 case SCM_RIGHTS: 477 return (LINUX_SCM_RIGHTS); 478 case SCM_CREDS: 479 return (LINUX_SCM_CREDENTIALS); 480 } 481 return (-1); 482} 483 484static int 485linux_to_bsd_msghdr(struct msghdr *bhdr, const struct l_msghdr *lhdr) 486{ 487 if (lhdr->msg_controllen > INT_MAX) 488 return (ENOBUFS); 489 490 bhdr->msg_name = PTRIN(lhdr->msg_name); 491 bhdr->msg_namelen = lhdr->msg_namelen; 492 bhdr->msg_iov = PTRIN(lhdr->msg_iov); 493 bhdr->msg_iovlen = lhdr->msg_iovlen; 494 bhdr->msg_control = PTRIN(lhdr->msg_control); 495 496 /* 497 * msg_controllen is skipped since BSD and LINUX control messages 498 * are potentially different sizes (e.g. the cred structure used 499 * by SCM_CREDS is different between the two operating system). 500 * 501 * The caller can set it (if necessary) after converting all the 502 * control messages. 503 */ 504 505 bhdr->msg_flags = linux_to_bsd_msg_flags(lhdr->msg_flags); 506 return (0); 507} 508 509static int 510bsd_to_linux_msghdr(const struct msghdr *bhdr, struct l_msghdr *lhdr) 511{ 512 lhdr->msg_name = PTROUT(bhdr->msg_name); 513 lhdr->msg_namelen = bhdr->msg_namelen; 514 lhdr->msg_iov = PTROUT(bhdr->msg_iov); 515 lhdr->msg_iovlen = bhdr->msg_iovlen; 516 lhdr->msg_control = PTROUT(bhdr->msg_control); 517 518 /* 519 * msg_controllen is skipped since BSD and LINUX control messages 520 * are potentially different sizes (e.g. the cred structure used 521 * by SCM_CREDS is different between the two operating system). 522 * 523 * The caller can set it (if necessary) after converting all the 524 * control messages. 525 */ 526 527 /* msg_flags skipped */ 528 return (0); 529} 530 531static int 532linux_set_socket_flags(struct thread *td, int s, int flags) 533{ 534 int error; 535 536 if (flags & LINUX_SOCK_NONBLOCK) { 537 error = kern_fcntl(td, s, F_SETFL, O_NONBLOCK); 538 if (error) 539 return (error); 540 } 541 if (flags & LINUX_SOCK_CLOEXEC) { 542 error = kern_fcntl(td, s, F_SETFD, FD_CLOEXEC); 543 if (error) 544 return (error); 545 } 546 return (0); 547} 548 549static int 550linux_sendit(struct thread *td, int s, struct msghdr *mp, int flags, 551 struct mbuf *control, enum uio_seg segflg) 552{ 553 struct sockaddr *to; 554 int error; 555 556 if (mp->msg_name != NULL) { 557 error = linux_getsockaddr(&to, mp->msg_name, mp->msg_namelen); 558 if (error) 559 return (error); 560 mp->msg_name = to; 561 } else 562 to = NULL; 563 564 error = kern_sendit(td, s, mp, linux_to_bsd_msg_flags(flags), control, 565 segflg); 566 567 if (to) 568 free(to, M_SONAME); 569 return (error); 570} 571 572/* Return 0 if IP_HDRINCL is set for the given socket. */ 573static int 574linux_check_hdrincl(struct thread *td, int s) 575{ 576 int error, optval, size_val; 577 578 size_val = sizeof(optval); 579 error = kern_getsockopt(td, s, IPPROTO_IP, IP_HDRINCL, 580 &optval, UIO_SYSSPACE, &size_val); 581 if (error) 582 return (error); 583 584 return (optval == 0); 585} 586 587struct linux_sendto_args { 588 int s; 589 l_uintptr_t msg; 590 int len; 591 int flags; 592 l_uintptr_t to; 593 int tolen; 594}; 595 596/* 597 * Updated sendto() when IP_HDRINCL is set: 598 * tweak endian-dependent fields in the IP packet. 599 */ 600static int 601linux_sendto_hdrincl(struct thread *td, struct linux_sendto_args *linux_args) 602{ 603/* 604 * linux_ip_copysize defines how many bytes we should copy 605 * from the beginning of the IP packet before we customize it for BSD. 606 * It should include all the fields we modify (ip_len and ip_off). 607 */ 608#define linux_ip_copysize 8 609 610 struct ip *packet; 611 struct msghdr msg; 612 struct iovec aiov[1]; 613 int error; 614 615 /* Check that the packet isn't too big or too small. */ 616 if (linux_args->len < linux_ip_copysize || 617 linux_args->len > IP_MAXPACKET) 618 return (EINVAL); 619 620 packet = (struct ip *)malloc(linux_args->len, M_TEMP, M_WAITOK); 621 622 /* Make kernel copy of the packet to be sent */ 623 if ((error = copyin(PTRIN(linux_args->msg), packet, 624 linux_args->len))) 625 goto goout; 626 627 /* Convert fields from Linux to BSD raw IP socket format */ 628 packet->ip_len = linux_args->len; 629 packet->ip_off = ntohs(packet->ip_off); 630 631 /* Prepare the msghdr and iovec structures describing the new packet */ 632 msg.msg_name = PTRIN(linux_args->to); 633 msg.msg_namelen = linux_args->tolen; 634 msg.msg_iov = aiov; 635 msg.msg_iovlen = 1; 636 msg.msg_control = NULL; 637 msg.msg_flags = 0; 638 aiov[0].iov_base = (char *)packet; 639 aiov[0].iov_len = linux_args->len; 640 error = linux_sendit(td, linux_args->s, &msg, linux_args->flags, 641 NULL, UIO_SYSSPACE); 642goout: 643 free(packet, M_TEMP); 644 return (error); 645} 646 647struct linux_socket_args { 648 int domain; 649 int type; 650 int protocol; 651}; 652 653static int 654linux_socket(struct thread *td, struct linux_socket_args *args) 655{ 656 struct socket_args /* { 657 int domain; 658 int type; 659 int protocol; 660 } */ bsd_args; 661 int retval_socket, socket_flags; 662 663 bsd_args.protocol = args->protocol; 664 socket_flags = args->type & ~LINUX_SOCK_TYPE_MASK; 665 if (socket_flags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK)) 666 return (EINVAL); 667 bsd_args.type = args->type & LINUX_SOCK_TYPE_MASK; 668 if (bsd_args.type < 0 || bsd_args.type > LINUX_SOCK_MAX) 669 return (EINVAL); 670 bsd_args.domain = linux_to_bsd_domain(args->domain); 671 if (bsd_args.domain == -1) 672 return (EAFNOSUPPORT); 673 674 retval_socket = sys_socket(td, &bsd_args); 675 if (retval_socket) 676 return (retval_socket); 677 678 retval_socket = linux_set_socket_flags(td, td->td_retval[0], 679 socket_flags); 680 if (retval_socket) { 681 (void)kern_close(td, td->td_retval[0]); 682 goto out; 683 } 684 685 if (bsd_args.type == SOCK_RAW 686 && (bsd_args.protocol == IPPROTO_RAW || bsd_args.protocol == 0) 687 && bsd_args.domain == PF_INET) { 688 /* It's a raw IP socket: set the IP_HDRINCL option. */ 689 int hdrincl; 690 691 hdrincl = 1; 692 /* We ignore any error returned by kern_setsockopt() */ 693 kern_setsockopt(td, td->td_retval[0], IPPROTO_IP, IP_HDRINCL, 694 &hdrincl, UIO_SYSSPACE, sizeof(hdrincl)); 695 } 696#ifdef INET6 697 /* 698 * Linux AF_INET6 socket has IPV6_V6ONLY setsockopt set to 0 by default 699 * and some apps depend on this. So, set V6ONLY to 0 for Linux apps. 700 * For simplicity we do this unconditionally of the net.inet6.ip6.v6only 701 * sysctl value. 702 */ 703 if (bsd_args.domain == PF_INET6) { 704 int v6only; 705 706 v6only = 0; 707 /* We ignore any error returned by setsockopt() */ 708 kern_setsockopt(td, td->td_retval[0], IPPROTO_IPV6, IPV6_V6ONLY, 709 &v6only, UIO_SYSSPACE, sizeof(v6only)); 710 } 711#endif 712 713out: 714 return (retval_socket); 715} 716 717struct linux_bind_args { 718 int s; 719 l_uintptr_t name; 720 int namelen; 721}; 722 723static int 724linux_bind(struct thread *td, struct linux_bind_args *args) 725{ 726 struct sockaddr *sa; 727 int error; 728 729 error = linux_getsockaddr(&sa, PTRIN(args->name), 730 args->namelen); 731 if (error) 732 return (error); 733 734 error = kern_bind(td, args->s, sa); 735 free(sa, M_SONAME); 736 if (error == EADDRNOTAVAIL && args->namelen != sizeof(struct sockaddr_in)) 737 return (EINVAL); 738 return (error); 739} 740 741struct linux_connect_args { 742 int s; 743 l_uintptr_t name; 744 int namelen; 745}; 746int linux_connect(struct thread *, struct linux_connect_args *); 747 748int 749linux_connect(struct thread *td, struct linux_connect_args *args) 750{ 751 struct socket *so; 752 struct sockaddr *sa; 753 u_int fflag; 754 int error; 755 756 error = linux_getsockaddr(&sa, (struct osockaddr *)PTRIN(args->name), 757 args->namelen); 758 if (error) 759 return (error); 760 761 error = kern_connect(td, args->s, sa); 762 free(sa, M_SONAME); 763 if (error != EISCONN) 764 return (error); 765 766 /* 767 * Linux doesn't return EISCONN the first time it occurs, 768 * when on a non-blocking socket. Instead it returns the 769 * error getsockopt(SOL_SOCKET, SO_ERROR) would return on BSD. 770 * 771 * XXXRW: Instead of using fgetsock(), check that it is a 772 * socket and use the file descriptor reference instead of 773 * creating a new one. 774 */ 775 error = fgetsock(td, args->s, CAP_CONNECT, &so, &fflag); 776 if (error == 0) { 777 error = EISCONN; 778 if (fflag & FNONBLOCK) { 779 SOCK_LOCK(so); 780 if (so->so_emuldata == 0) 781 error = so->so_error; 782 so->so_emuldata = (void *)1; 783 SOCK_UNLOCK(so); 784 } 785 fputsock(so); 786 } 787 return (error); 788} 789 790struct linux_listen_args { 791 int s; 792 int backlog; 793}; 794 795static int 796linux_listen(struct thread *td, struct linux_listen_args *args) 797{ 798 struct listen_args /* { 799 int s; 800 int backlog; 801 } */ bsd_args; 802 803 bsd_args.s = args->s; 804 bsd_args.backlog = args->backlog; 805 return (sys_listen(td, &bsd_args)); 806} 807 808static int 809linux_accept_common(struct thread *td, int s, l_uintptr_t addr, 810 l_uintptr_t namelen, int flags) 811{ 812 struct accept_args /* { 813 int s; 814 struct sockaddr * __restrict name; 815 socklen_t * __restrict anamelen; 816 } */ bsd_args; 817 int error; 818 819 if (flags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK)) 820 return (EINVAL); 821 822 bsd_args.s = s; 823 /* XXX: */ 824 bsd_args.name = (struct sockaddr * __restrict)PTRIN(addr); 825 bsd_args.anamelen = PTRIN(namelen);/* XXX */ 826 error = sys_accept(td, &bsd_args); 827 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.name); 828 if (error) { 829 if (error == EFAULT && namelen != sizeof(struct sockaddr_in)) 830 return (EINVAL); 831 return (error); 832 } 833 834 /* 835 * linux appears not to copy flags from the parent socket to the 836 * accepted one, so we must clear the flags in the new descriptor 837 * and apply the requested flags. 838 */ 839 error = kern_fcntl(td, td->td_retval[0], F_SETFL, 0); 840 if (error) 841 goto out; 842 error = linux_set_socket_flags(td, td->td_retval[0], flags); 843 if (error) 844 goto out; 845 if (addr) 846 error = linux_sa_put(PTRIN(addr)); 847 848out: 849 if (error) { 850 (void)kern_close(td, td->td_retval[0]); 851 td->td_retval[0] = 0; 852 } 853 return (error); 854} 855 856struct linux_accept_args { 857 int s; 858 l_uintptr_t addr; 859 l_uintptr_t namelen; 860}; 861 862static int 863linux_accept(struct thread *td, struct linux_accept_args *args) 864{ 865 866 return (linux_accept_common(td, args->s, args->addr, 867 args->namelen, 0)); 868} 869 870struct linux_accept4_args { 871 int s; 872 l_uintptr_t addr; 873 l_uintptr_t namelen; 874 int flags; 875}; 876 877static int 878linux_accept4(struct thread *td, struct linux_accept4_args *args) 879{ 880 881 return (linux_accept_common(td, args->s, args->addr, 882 args->namelen, args->flags)); 883} 884 885struct linux_getsockname_args { 886 int s; 887 l_uintptr_t addr; 888 l_uintptr_t namelen; 889}; 890 891static int 892linux_getsockname(struct thread *td, struct linux_getsockname_args *args) 893{ 894 struct getsockname_args /* { 895 int fdes; 896 struct sockaddr * __restrict asa; 897 socklen_t * __restrict alen; 898 } */ bsd_args; 899 int error; 900 901 bsd_args.fdes = args->s; 902 /* XXX: */ 903 bsd_args.asa = (struct sockaddr * __restrict)PTRIN(args->addr); 904 bsd_args.alen = PTRIN(args->namelen); /* XXX */ 905 error = sys_getsockname(td, &bsd_args); 906 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.asa); 907 if (error) 908 return (error); 909 error = linux_sa_put(PTRIN(args->addr)); 910 if (error) 911 return (error); 912 return (0); 913} 914 915struct linux_getpeername_args { 916 int s; 917 l_uintptr_t addr; 918 l_uintptr_t namelen; 919}; 920 921static int 922linux_getpeername(struct thread *td, struct linux_getpeername_args *args) 923{ 924 struct getpeername_args /* { 925 int fdes; 926 caddr_t asa; 927 int *alen; 928 } */ bsd_args; 929 int error; 930 931 bsd_args.fdes = args->s; 932 bsd_args.asa = (struct sockaddr *)PTRIN(args->addr); 933 bsd_args.alen = (int *)PTRIN(args->namelen); 934 error = sys_getpeername(td, &bsd_args); 935 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.asa); 936 if (error) 937 return (error); 938 error = linux_sa_put(PTRIN(args->addr)); 939 if (error) 940 return (error); 941 return (0); 942} 943 944struct linux_socketpair_args { 945 int domain; 946 int type; 947 int protocol; 948 l_uintptr_t rsv; 949}; 950 951static int 952linux_socketpair(struct thread *td, struct linux_socketpair_args *args) 953{ 954 struct socketpair_args /* { 955 int domain; 956 int type; 957 int protocol; 958 int *rsv; 959 } */ bsd_args; 960 int error, socket_flags; 961 int sv[2]; 962 963 bsd_args.domain = linux_to_bsd_domain(args->domain); 964 if (bsd_args.domain != PF_LOCAL) 965 return (EAFNOSUPPORT); 966 967 socket_flags = args->type & ~LINUX_SOCK_TYPE_MASK; 968 if (socket_flags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK)) 969 return (EINVAL); 970 bsd_args.type = args->type & LINUX_SOCK_TYPE_MASK; 971 if (bsd_args.type < 0 || bsd_args.type > LINUX_SOCK_MAX) 972 return (EINVAL); 973 974 if (args->protocol != 0 && args->protocol != PF_UNIX) 975 976 /* 977 * Use of PF_UNIX as protocol argument is not right, 978 * but Linux does it. 979 * Do not map PF_UNIX as its Linux value is identical 980 * to FreeBSD one. 981 */ 982 return (EPROTONOSUPPORT); 983 else 984 bsd_args.protocol = 0; 985 bsd_args.rsv = (int *)PTRIN(args->rsv); 986 error = kern_socketpair(td, bsd_args.domain, bsd_args.type, 987 bsd_args.protocol, sv); 988 if (error) 989 return (error); 990 error = linux_set_socket_flags(td, sv[0], socket_flags); 991 if (error) 992 goto out; 993 error = linux_set_socket_flags(td, sv[1], socket_flags); 994 if (error) 995 goto out; 996 997 error = copyout(sv, bsd_args.rsv, 2 * sizeof(int)); 998 999out: 1000 if (error) { 1001 (void)kern_close(td, sv[0]); 1002 (void)kern_close(td, sv[1]); 1003 } 1004 return (error); 1005} 1006 1007struct linux_send_args { 1008 int s; 1009 l_uintptr_t msg; 1010 int len; 1011 int flags; 1012}; 1013 1014static int 1015linux_send(struct thread *td, struct linux_send_args *args) 1016{ 1017 struct sendto_args /* { 1018 int s; 1019 caddr_t buf; 1020 int len; 1021 int flags; 1022 caddr_t to; 1023 int tolen; 1024 } */ bsd_args; 1025 1026 bsd_args.s = args->s; 1027 bsd_args.buf = (caddr_t)PTRIN(args->msg); 1028 bsd_args.len = args->len; 1029 bsd_args.flags = args->flags; 1030 bsd_args.to = NULL; 1031 bsd_args.tolen = 0; 1032 return sys_sendto(td, &bsd_args); 1033} 1034 1035struct linux_recv_args { 1036 int s; 1037 l_uintptr_t msg; 1038 int len; 1039 int flags; 1040}; 1041 1042static int 1043linux_recv(struct thread *td, struct linux_recv_args *args) 1044{ 1045 struct recvfrom_args /* { 1046 int s; 1047 caddr_t buf; 1048 int len; 1049 int flags; 1050 struct sockaddr *from; 1051 socklen_t fromlenaddr; 1052 } */ bsd_args; 1053 1054 bsd_args.s = args->s; 1055 bsd_args.buf = (caddr_t)PTRIN(args->msg); 1056 bsd_args.len = args->len; 1057 bsd_args.flags = linux_to_bsd_msg_flags(args->flags); 1058 bsd_args.from = NULL; 1059 bsd_args.fromlenaddr = 0; 1060 return (sys_recvfrom(td, &bsd_args)); 1061} 1062 1063static int 1064linux_sendto(struct thread *td, struct linux_sendto_args *args) 1065{ 1066 struct msghdr msg; 1067 struct iovec aiov; 1068 int error; 1069 1070 if (linux_check_hdrincl(td, args->s) == 0) 1071 /* IP_HDRINCL set, tweak the packet before sending */ 1072 return (linux_sendto_hdrincl(td, args)); 1073 1074 msg.msg_name = PTRIN(args->to); 1075 msg.msg_namelen = args->tolen; 1076 msg.msg_iov = &aiov; 1077 msg.msg_iovlen = 1; 1078 msg.msg_control = NULL; 1079 msg.msg_flags = 0; 1080 aiov.iov_base = PTRIN(args->msg); 1081 aiov.iov_len = args->len; 1082 error = linux_sendit(td, args->s, &msg, args->flags, NULL, 1083 UIO_USERSPACE); 1084 return (error); 1085} 1086 1087struct linux_recvfrom_args { 1088 int s; 1089 l_uintptr_t buf; 1090 int len; 1091 int flags; 1092 l_uintptr_t from; 1093 l_uintptr_t fromlen; 1094}; 1095 1096static int 1097linux_recvfrom(struct thread *td, struct linux_recvfrom_args *args) 1098{ 1099 struct recvfrom_args /* { 1100 int s; 1101 caddr_t buf; 1102 size_t len; 1103 int flags; 1104 struct sockaddr * __restrict from; 1105 socklen_t * __restrict fromlenaddr; 1106 } */ bsd_args; 1107 size_t len; 1108 int error; 1109 1110 if ((error = copyin(PTRIN(args->fromlen), &len, sizeof(size_t)))) 1111 return (error); 1112 1113 bsd_args.s = args->s; 1114 bsd_args.buf = PTRIN(args->buf); 1115 bsd_args.len = args->len; 1116 bsd_args.flags = linux_to_bsd_msg_flags(args->flags); 1117 /* XXX: */ 1118 bsd_args.from = (struct sockaddr * __restrict)PTRIN(args->from); 1119 bsd_args.fromlenaddr = PTRIN(args->fromlen);/* XXX */ 1120 1121 linux_to_bsd_sockaddr((struct sockaddr *)bsd_args.from, len); 1122 error = sys_recvfrom(td, &bsd_args); 1123 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.from); 1124 1125 if (error) 1126 return (error); 1127 if (args->from) { 1128 error = linux_sa_put((struct osockaddr *) 1129 PTRIN(args->from)); 1130 if (error) 1131 return (error); 1132 } 1133 return (0); 1134} 1135 1136struct linux_sendmsg_args { 1137 int s; 1138 l_uintptr_t msg; 1139 int flags; 1140}; 1141 1142static int 1143linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args) 1144{ 1145 struct cmsghdr *cmsg; 1146 struct cmsgcred cmcred; 1147 struct mbuf *control; 1148 struct msghdr msg; 1149 struct l_cmsghdr linux_cmsg; 1150 struct l_cmsghdr *ptr_cmsg; 1151 struct l_msghdr linux_msg; 1152 struct iovec *iov; 1153 socklen_t datalen; 1154 struct sockaddr *sa; 1155 sa_family_t sa_family; 1156 void *data; 1157 int error; 1158 1159 error = copyin(PTRIN(args->msg), &linux_msg, sizeof(linux_msg)); 1160 if (error) 1161 return (error); 1162 1163 /* 1164 * Some Linux applications (ping) define a non-NULL control data 1165 * pointer, but a msg_controllen of 0, which is not allowed in the 1166 * FreeBSD system call interface. NULL the msg_control pointer in 1167 * order to handle this case. This should be checked, but allows the 1168 * Linux ping to work. 1169 */ 1170 if (PTRIN(linux_msg.msg_control) != NULL && linux_msg.msg_controllen == 0) 1171 linux_msg.msg_control = PTROUT(NULL); 1172 1173 error = linux_to_bsd_msghdr(&msg, &linux_msg); 1174 if (error) 1175 return (error); 1176 1177#ifdef COMPAT_LINUX32 1178 error = linux32_copyiniov(PTRIN(msg.msg_iov), msg.msg_iovlen, 1179 &iov, EMSGSIZE); 1180#else 1181 error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE); 1182#endif 1183 if (error) 1184 return (error); 1185 1186 control = NULL; 1187 cmsg = NULL; 1188 1189 if ((ptr_cmsg = LINUX_CMSG_FIRSTHDR(&linux_msg)) != NULL) { 1190 error = kern_getsockname(td, args->s, &sa, &datalen); 1191 if (error) 1192 goto bad; 1193 sa_family = sa->sa_family; 1194 free(sa, M_SONAME); 1195 1196 error = ENOBUFS; 1197 cmsg = malloc(CMSG_HDRSZ, M_TEMP, M_WAITOK | M_ZERO); 1198 control = m_get(M_WAITOK, MT_CONTROL); 1199 if (control == NULL) 1200 goto bad; 1201 1202 do { 1203 error = copyin(ptr_cmsg, &linux_cmsg, 1204 sizeof(struct l_cmsghdr)); 1205 if (error) 1206 goto bad; 1207 1208 error = EINVAL; 1209 if (linux_cmsg.cmsg_len < sizeof(struct l_cmsghdr)) 1210 goto bad; 1211 1212 /* 1213 * Now we support only SCM_RIGHTS and SCM_CRED, 1214 * so return EINVAL in any other cmsg_type 1215 */ 1216 cmsg->cmsg_type = 1217 linux_to_bsd_cmsg_type(linux_cmsg.cmsg_type); 1218 cmsg->cmsg_level = 1219 linux_to_bsd_sockopt_level(linux_cmsg.cmsg_level); 1220 if (cmsg->cmsg_type == -1 1221 || cmsg->cmsg_level != SOL_SOCKET) 1222 goto bad; 1223 1224 /* 1225 * Some applications (e.g. pulseaudio) attempt to 1226 * send ancillary data even if the underlying protocol 1227 * doesn't support it which is not allowed in the 1228 * FreeBSD system call interface. 1229 */ 1230 if (sa_family != AF_UNIX) 1231 continue; 1232 1233 data = LINUX_CMSG_DATA(ptr_cmsg); 1234 datalen = linux_cmsg.cmsg_len - L_CMSG_HDRSZ; 1235 1236 switch (cmsg->cmsg_type) 1237 { 1238 case SCM_RIGHTS: 1239 break; 1240 1241 case SCM_CREDS: 1242 data = &cmcred; 1243 datalen = sizeof(cmcred); 1244 1245 /* 1246 * The lower levels will fill in the structure 1247 */ 1248 bzero(data, datalen); 1249 break; 1250 } 1251 1252 cmsg->cmsg_len = CMSG_LEN(datalen); 1253 1254 error = ENOBUFS; 1255 if (!m_append(control, CMSG_HDRSZ, (c_caddr_t)cmsg)) 1256 goto bad; 1257 if (!m_append(control, datalen, (c_caddr_t)data)) 1258 goto bad; 1259 } while ((ptr_cmsg = LINUX_CMSG_NXTHDR(&linux_msg, ptr_cmsg))); 1260 1261 if (m_length(control, NULL) == 0) { 1262 m_freem(control); 1263 control = NULL; 1264 } 1265 } 1266 1267 msg.msg_iov = iov; 1268 msg.msg_flags = 0; 1269 error = linux_sendit(td, args->s, &msg, args->flags, control, 1270 UIO_USERSPACE); 1271 1272bad: 1273 free(iov, M_IOV); 1274 if (cmsg) 1275 free(cmsg, M_TEMP); 1276 return (error); 1277} 1278 1279struct linux_recvmsg_args { 1280 int s; 1281 l_uintptr_t msg; 1282 int flags; 1283}; 1284 1285static int 1286linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args) 1287{ 1288 struct cmsghdr *cm; 1289 struct cmsgcred *cmcred; 1290 struct msghdr msg; 1291 struct l_cmsghdr *linux_cmsg = NULL; 1292 struct l_ucred linux_ucred; 1293 socklen_t datalen, outlen; 1294 struct l_msghdr linux_msg; 1295 struct iovec *iov, *uiov; 1296 struct mbuf *control = NULL; 1297 struct mbuf **controlp; 1298 caddr_t outbuf; 1299 void *data; 1300 int error, i, fd, fds, *fdp; 1301 1302 error = copyin(PTRIN(args->msg), &linux_msg, sizeof(linux_msg)); 1303 if (error) 1304 return (error); 1305 1306 error = linux_to_bsd_msghdr(&msg, &linux_msg); 1307 if (error) 1308 return (error); 1309 1310#ifdef COMPAT_LINUX32 1311 error = linux32_copyiniov(PTRIN(msg.msg_iov), msg.msg_iovlen, 1312 &iov, EMSGSIZE); 1313#else 1314 error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE); 1315#endif 1316 if (error) 1317 return (error); 1318 1319 if (msg.msg_name) { 1320 error = linux_to_bsd_sockaddr((struct sockaddr *)msg.msg_name, 1321 msg.msg_namelen); 1322 if (error) 1323 goto bad; 1324 } 1325 1326 uiov = msg.msg_iov; 1327 msg.msg_iov = iov; 1328 controlp = (msg.msg_control != NULL) ? &control : NULL; 1329 error = kern_recvit(td, args->s, &msg, UIO_USERSPACE, controlp); 1330 msg.msg_iov = uiov; 1331 if (error) 1332 goto bad; 1333 1334 error = bsd_to_linux_msghdr(&msg, &linux_msg); 1335 if (error) 1336 goto bad; 1337 1338 if (linux_msg.msg_name) { 1339 error = bsd_to_linux_sockaddr((struct sockaddr *) 1340 PTRIN(linux_msg.msg_name)); 1341 if (error) 1342 goto bad; 1343 } 1344 if (linux_msg.msg_name && linux_msg.msg_namelen > 2) { 1345 error = linux_sa_put(PTRIN(linux_msg.msg_name)); 1346 if (error) 1347 goto bad; 1348 } 1349 1350 outbuf = PTRIN(linux_msg.msg_control); 1351 outlen = 0; 1352 1353 if (control) { 1354 linux_cmsg = malloc(L_CMSG_HDRSZ, M_TEMP, M_WAITOK | M_ZERO); 1355 1356 msg.msg_control = mtod(control, struct cmsghdr *); 1357 msg.msg_controllen = control->m_len; 1358 1359 cm = CMSG_FIRSTHDR(&msg); 1360 1361 while (cm != NULL) { 1362 linux_cmsg->cmsg_type = 1363 bsd_to_linux_cmsg_type(cm->cmsg_type); 1364 linux_cmsg->cmsg_level = 1365 bsd_to_linux_sockopt_level(cm->cmsg_level); 1366 if (linux_cmsg->cmsg_type == -1 1367 || cm->cmsg_level != SOL_SOCKET) 1368 { 1369 error = EINVAL; 1370 goto bad; 1371 } 1372 1373 data = CMSG_DATA(cm); 1374 datalen = (caddr_t)cm + cm->cmsg_len - (caddr_t)data; 1375 1376 switch (cm->cmsg_type) 1377 { 1378 case SCM_RIGHTS: 1379 if (args->flags & LINUX_MSG_CMSG_CLOEXEC) { 1380 fds = datalen / sizeof(int); 1381 fdp = data; 1382 for (i = 0; i < fds; i++) { 1383 fd = *fdp++; 1384 (void)kern_fcntl(td, fd, 1385 F_SETFD, FD_CLOEXEC); 1386 } 1387 } 1388 break; 1389 1390 case SCM_CREDS: 1391 /* 1392 * Currently LOCAL_CREDS is never in 1393 * effect for Linux so no need to worry 1394 * about sockcred 1395 */ 1396 if (datalen != sizeof(*cmcred)) { 1397 error = EMSGSIZE; 1398 goto bad; 1399 } 1400 cmcred = (struct cmsgcred *)data; 1401 bzero(&linux_ucred, sizeof(linux_ucred)); 1402 linux_ucred.pid = cmcred->cmcred_pid; 1403 linux_ucred.uid = cmcred->cmcred_uid; 1404 linux_ucred.gid = cmcred->cmcred_gid; 1405 data = &linux_ucred; 1406 datalen = sizeof(linux_ucred); 1407 break; 1408 } 1409 1410 if (outlen + LINUX_CMSG_LEN(datalen) > 1411 linux_msg.msg_controllen) { 1412 if (outlen == 0) { 1413 error = EMSGSIZE; 1414 goto bad; 1415 } else { 1416 linux_msg.msg_flags |= 1417 LINUX_MSG_CTRUNC; 1418 goto out; 1419 } 1420 } 1421 1422 linux_cmsg->cmsg_len = LINUX_CMSG_LEN(datalen); 1423 1424 error = copyout(linux_cmsg, outbuf, L_CMSG_HDRSZ); 1425 if (error) 1426 goto bad; 1427 outbuf += L_CMSG_HDRSZ; 1428 1429 error = copyout(data, outbuf, datalen); 1430 if (error) 1431 goto bad; 1432 1433 outbuf += LINUX_CMSG_ALIGN(datalen); 1434 outlen += LINUX_CMSG_LEN(datalen); 1435 1436 cm = CMSG_NXTHDR(&msg, cm); 1437 } 1438 } 1439 1440out: 1441 linux_msg.msg_controllen = outlen; 1442 error = copyout(&linux_msg, PTRIN(args->msg), sizeof(linux_msg)); 1443 1444bad: 1445 free(iov, M_IOV); 1446 m_freem(control); 1447 free(linux_cmsg, M_TEMP); 1448 1449 return (error); 1450} 1451 1452struct linux_shutdown_args { 1453 int s; 1454 int how; 1455}; 1456 1457static int 1458linux_shutdown(struct thread *td, struct linux_shutdown_args *args) 1459{ 1460 struct shutdown_args /* { 1461 int s; 1462 int how; 1463 } */ bsd_args; 1464 1465 bsd_args.s = args->s; 1466 bsd_args.how = args->how; 1467 return (sys_shutdown(td, &bsd_args)); 1468} 1469 1470struct linux_setsockopt_args { 1471 int s; 1472 int level; 1473 int optname; 1474 l_uintptr_t optval; 1475 int optlen; 1476}; 1477 1478static int 1479linux_setsockopt(struct thread *td, struct linux_setsockopt_args *args) 1480{ 1481 struct setsockopt_args /* { 1482 int s; 1483 int level; 1484 int name; 1485 caddr_t val; 1486 int valsize; 1487 } */ bsd_args; 1488 l_timeval linux_tv; 1489 struct timeval tv; 1490 int error, name; 1491 1492 bsd_args.s = args->s; 1493 bsd_args.level = linux_to_bsd_sockopt_level(args->level); 1494 switch (bsd_args.level) { 1495 case SOL_SOCKET: 1496 name = linux_to_bsd_so_sockopt(args->optname); 1497 switch (name) { 1498 case SO_RCVTIMEO: 1499 /* FALLTHROUGH */ 1500 case SO_SNDTIMEO: 1501 error = copyin(PTRIN(args->optval), &linux_tv, 1502 sizeof(linux_tv)); 1503 if (error) 1504 return (error); 1505 tv.tv_sec = linux_tv.tv_sec; 1506 tv.tv_usec = linux_tv.tv_usec; 1507 return (kern_setsockopt(td, args->s, bsd_args.level, 1508 name, &tv, UIO_SYSSPACE, sizeof(tv))); 1509 /* NOTREACHED */ 1510 break; 1511 default: 1512 break; 1513 } 1514 break; 1515 case IPPROTO_IP: 1516 name = linux_to_bsd_ip_sockopt(args->optname); 1517 break; 1518 case IPPROTO_TCP: 1519 name = linux_to_bsd_tcp_sockopt(args->optname); 1520 break; 1521 default: 1522 name = -1; 1523 break; 1524 } 1525 if (name == -1) 1526 return (ENOPROTOOPT); 1527 1528 bsd_args.name = name; 1529 bsd_args.val = PTRIN(args->optval); 1530 bsd_args.valsize = args->optlen; 1531 1532 if (name == IPV6_NEXTHOP) { 1533 linux_to_bsd_sockaddr((struct sockaddr *)bsd_args.val, 1534 bsd_args.valsize); 1535 error = sys_setsockopt(td, &bsd_args); 1536 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.val); 1537 } else 1538 error = sys_setsockopt(td, &bsd_args); 1539 1540 return (error); 1541} 1542 1543struct linux_getsockopt_args { 1544 int s; 1545 int level; 1546 int optname; 1547 l_uintptr_t optval; 1548 l_uintptr_t optlen; 1549}; 1550 1551static int 1552linux_getsockopt(struct thread *td, struct linux_getsockopt_args *args) 1553{ 1554 struct getsockopt_args /* { 1555 int s; 1556 int level; 1557 int name; 1558 caddr_t val; 1559 int *avalsize; 1560 } */ bsd_args; 1561 l_timeval linux_tv; 1562 struct timeval tv; 1563 socklen_t tv_len, xulen; 1564 struct xucred xu; 1565 struct l_ucred lxu; 1566 int error, name; 1567 1568 bsd_args.s = args->s; 1569 bsd_args.level = linux_to_bsd_sockopt_level(args->level); 1570 switch (bsd_args.level) { 1571 case SOL_SOCKET: 1572 name = linux_to_bsd_so_sockopt(args->optname); 1573 switch (name) { 1574 case SO_RCVTIMEO: 1575 /* FALLTHROUGH */ 1576 case SO_SNDTIMEO: 1577 tv_len = sizeof(tv); 1578 error = kern_getsockopt(td, args->s, bsd_args.level, 1579 name, &tv, UIO_SYSSPACE, &tv_len); 1580 if (error) 1581 return (error); 1582 linux_tv.tv_sec = tv.tv_sec; 1583 linux_tv.tv_usec = tv.tv_usec; 1584 return (copyout(&linux_tv, PTRIN(args->optval), 1585 sizeof(linux_tv))); 1586 /* NOTREACHED */ 1587 break; 1588 case LOCAL_PEERCRED: 1589 if (args->optlen != sizeof(lxu)) 1590 return (EINVAL); 1591 xulen = sizeof(xu); 1592 error = kern_getsockopt(td, args->s, bsd_args.level, 1593 name, &xu, UIO_SYSSPACE, &xulen); 1594 if (error) 1595 return (error); 1596 /* 1597 * XXX Use 0 for pid as the FreeBSD does not cache peer pid. 1598 */ 1599 lxu.pid = 0; 1600 lxu.uid = xu.cr_uid; 1601 lxu.gid = xu.cr_gid; 1602 return (copyout(&lxu, PTRIN(args->optval), sizeof(lxu))); 1603 /* NOTREACHED */ 1604 break; 1605 default: 1606 break; 1607 } 1608 break; 1609 case IPPROTO_IP: 1610 name = linux_to_bsd_ip_sockopt(args->optname); 1611 break; 1612 case IPPROTO_TCP: 1613 name = linux_to_bsd_tcp_sockopt(args->optname); 1614 break; 1615 default: 1616 name = -1; 1617 break; 1618 } 1619 if (name == -1) 1620 return (EINVAL); 1621 1622 bsd_args.name = name; 1623 bsd_args.val = PTRIN(args->optval); 1624 bsd_args.avalsize = PTRIN(args->optlen); 1625 1626 if (name == IPV6_NEXTHOP) { 1627 error = sys_getsockopt(td, &bsd_args); 1628 bsd_to_linux_sockaddr((struct sockaddr *)bsd_args.val); 1629 } else 1630 error = sys_getsockopt(td, &bsd_args); 1631 1632 return (error); 1633} 1634 1635/* Argument list sizes for linux_socketcall */ 1636 1637#define LINUX_AL(x) ((x) * sizeof(l_ulong)) 1638 1639static const unsigned char lxs_args[] = { 1640 LINUX_AL(0) /* unused*/, LINUX_AL(3) /* socket */, 1641 LINUX_AL(3) /* bind */, LINUX_AL(3) /* connect */, 1642 LINUX_AL(2) /* listen */, LINUX_AL(3) /* accept */, 1643 LINUX_AL(3) /* getsockname */, LINUX_AL(3) /* getpeername */, 1644 LINUX_AL(4) /* socketpair */, LINUX_AL(4) /* send */, 1645 LINUX_AL(4) /* recv */, LINUX_AL(6) /* sendto */, 1646 LINUX_AL(6) /* recvfrom */, LINUX_AL(2) /* shutdown */, 1647 LINUX_AL(5) /* setsockopt */, LINUX_AL(5) /* getsockopt */, 1648 LINUX_AL(3) /* sendmsg */, LINUX_AL(3) /* recvmsg */, 1649 LINUX_AL(4) /* accept4 */ 1650}; 1651 1652#define LINUX_AL_SIZE sizeof(lxs_args) / sizeof(lxs_args[0]) - 1 1653 1654int 1655linux_socketcall(struct thread *td, struct linux_socketcall_args *args) 1656{ 1657 l_ulong a[6]; 1658 void *arg; 1659 int error; 1660 1661 if (args->what < LINUX_SOCKET || args->what > LINUX_AL_SIZE) 1662 return (EINVAL); 1663 error = copyin(PTRIN(args->args), a, lxs_args[args->what]); 1664 if (error) 1665 return (error); 1666 1667 arg = a; 1668 switch (args->what) { 1669 case LINUX_SOCKET: 1670 return (linux_socket(td, arg)); 1671 case LINUX_BIND: 1672 return (linux_bind(td, arg)); 1673 case LINUX_CONNECT: 1674 return (linux_connect(td, arg)); 1675 case LINUX_LISTEN: 1676 return (linux_listen(td, arg)); 1677 case LINUX_ACCEPT: 1678 return (linux_accept(td, arg)); 1679 case LINUX_GETSOCKNAME: 1680 return (linux_getsockname(td, arg)); 1681 case LINUX_GETPEERNAME: 1682 return (linux_getpeername(td, arg)); 1683 case LINUX_SOCKETPAIR: 1684 return (linux_socketpair(td, arg)); 1685 case LINUX_SEND: 1686 return (linux_send(td, arg)); 1687 case LINUX_RECV: 1688 return (linux_recv(td, arg)); 1689 case LINUX_SENDTO: 1690 return (linux_sendto(td, arg)); 1691 case LINUX_RECVFROM: 1692 return (linux_recvfrom(td, arg)); 1693 case LINUX_SHUTDOWN: 1694 return (linux_shutdown(td, arg)); 1695 case LINUX_SETSOCKOPT: 1696 return (linux_setsockopt(td, arg)); 1697 case LINUX_GETSOCKOPT: 1698 return (linux_getsockopt(td, arg)); 1699 case LINUX_SENDMSG: 1700 return (linux_sendmsg(td, arg)); 1701 case LINUX_RECVMSG: 1702 return (linux_recvmsg(td, arg)); 1703 case LINUX_ACCEPT4: 1704 return (linux_accept4(td, arg)); 1705 } 1706 1707 uprintf("LINUX: 'socket' typ=%d not implemented\n", args->what); 1708 return (ENOSYS); 1709} 1710