The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/linux_socket.c

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * Copyright (c) 1995 Søren 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  * $FreeBSD: releng/5.0/sys/compat/linux/linux_socket.c 103886 2002-09-24 07:03:01Z mini $
   29  */
   30 
   31 /* XXX we use functions that might not exist. */
   32 #include "opt_compat.h"
   33 
   34 #ifndef COMPAT_43
   35 #error "Unable to compile Linux-emulator due to missing COMPAT_43 option!"
   36 #endif
   37 
   38 #include <sys/param.h>
   39 #include <sys/proc.h>
   40 #include <sys/systm.h>
   41 #include <sys/sysproto.h>
   42 #include <sys/fcntl.h>
   43 #include <sys/file.h>
   44 #include <sys/socket.h>
   45 #include <sys/socketvar.h>
   46 #include <sys/uio.h>
   47 
   48 #include <netinet/in.h>
   49 #include <netinet/in_systm.h>
   50 #include <netinet/ip.h>
   51 
   52 #include <machine/../linux/linux.h>
   53 #include <machine/../linux/linux_proto.h>
   54 #include <compat/linux/linux_socket.h>
   55 #include <compat/linux/linux_util.h>
   56 
   57 /*
   58  * FreeBSD's socket calls require the sockaddr struct length to agree
   59  * with the address family.  Linux does not, so we must force it.
   60  */
   61 static int
   62 linux_to_bsd_namelen(caddr_t name, int namelen)
   63 {
   64         uint16_t        family; /* XXX must match Linux sockaddr */
   65 
   66         if (copyin(name, &family, sizeof(family)))
   67                 return namelen;
   68 
   69         switch (family) {
   70                 case AF_INET:
   71                         return sizeof(struct sockaddr_in);
   72                 case AF_INET6:
   73                         return sizeof(struct sockaddr_in6);
   74         }
   75         return namelen;
   76 }
   77 
   78 #ifndef __alpha__
   79 static int
   80 linux_to_bsd_domain(int domain)
   81 {
   82 
   83         switch (domain) {
   84         case LINUX_AF_UNSPEC:
   85                 return (AF_UNSPEC);
   86         case LINUX_AF_UNIX:
   87                 return (AF_LOCAL);
   88         case LINUX_AF_INET:
   89                 return (AF_INET);
   90         case LINUX_AF_AX25:
   91                 return (AF_CCITT);
   92         case LINUX_AF_IPX:
   93                 return (AF_IPX);
   94         case LINUX_AF_APPLETALK:
   95                 return (AF_APPLETALK);
   96         }
   97         return (-1);
   98 }
   99 
  100 static int
  101 linux_to_bsd_sockopt_level(int level)
  102 {
  103 
  104         switch (level) {
  105         case LINUX_SOL_SOCKET:
  106                 return (SOL_SOCKET);
  107         }
  108         return (level);
  109 }
  110 
  111 static int
  112 linux_to_bsd_ip_sockopt(int opt)
  113 {
  114 
  115         switch (opt) {
  116         case LINUX_IP_TOS:
  117                 return (IP_TOS);
  118         case LINUX_IP_TTL:
  119                 return (IP_TTL);
  120         case LINUX_IP_OPTIONS:
  121                 return (IP_OPTIONS);
  122         case LINUX_IP_MULTICAST_IF:
  123                 return (IP_MULTICAST_IF);
  124         case LINUX_IP_MULTICAST_TTL:
  125                 return (IP_MULTICAST_TTL);
  126         case LINUX_IP_MULTICAST_LOOP:
  127                 return (IP_MULTICAST_LOOP);
  128         case LINUX_IP_ADD_MEMBERSHIP:
  129                 return (IP_ADD_MEMBERSHIP);
  130         case LINUX_IP_DROP_MEMBERSHIP:
  131                 return (IP_DROP_MEMBERSHIP);
  132         case LINUX_IP_HDRINCL:
  133                 return (IP_HDRINCL);
  134         }
  135         return (-1);
  136 }
  137 
  138 static int
  139 linux_to_bsd_so_sockopt(int opt)
  140 {
  141 
  142         switch (opt) {
  143         case LINUX_SO_DEBUG:
  144                 return (SO_DEBUG);
  145         case LINUX_SO_REUSEADDR:
  146                 return (SO_REUSEADDR);
  147         case LINUX_SO_TYPE:
  148                 return (SO_TYPE);
  149         case LINUX_SO_ERROR:
  150                 return (SO_ERROR);
  151         case LINUX_SO_DONTROUTE:
  152                 return (SO_DONTROUTE);
  153         case LINUX_SO_BROADCAST:
  154                 return (SO_BROADCAST);
  155         case LINUX_SO_SNDBUF:
  156                 return (SO_SNDBUF);
  157         case LINUX_SO_RCVBUF:
  158                 return (SO_RCVBUF);
  159         case LINUX_SO_KEEPALIVE:
  160                 return (SO_KEEPALIVE);
  161         case LINUX_SO_OOBINLINE:
  162                 return (SO_OOBINLINE);
  163         case LINUX_SO_LINGER:
  164                 return (SO_LINGER);
  165         }
  166         return (-1);
  167 }
  168 
  169 static int
  170 linux_to_bsd_msg_flags(int flags)
  171 {
  172         int ret_flags = 0;
  173 
  174         if (flags & LINUX_MSG_OOB)
  175                 ret_flags |= MSG_OOB;
  176         if (flags & LINUX_MSG_PEEK)
  177                 ret_flags |= MSG_PEEK;
  178         if (flags & LINUX_MSG_DONTROUTE)
  179                 ret_flags |= MSG_DONTROUTE;
  180         if (flags & LINUX_MSG_CTRUNC)
  181                 ret_flags |= MSG_CTRUNC;
  182         if (flags & LINUX_MSG_TRUNC)
  183                 ret_flags |= MSG_TRUNC;
  184         if (flags & LINUX_MSG_DONTWAIT)
  185                 ret_flags |= MSG_DONTWAIT;
  186         if (flags & LINUX_MSG_EOR)
  187                 ret_flags |= MSG_EOR;
  188         if (flags & LINUX_MSG_WAITALL)
  189                 ret_flags |= MSG_WAITALL;
  190 #if 0 /* not handled */
  191         if (flags & LINUX_MSG_PROXY)
  192                 ;
  193         if (flags & LINUX_MSG_FIN)
  194                 ;
  195         if (flags & LINUX_MSG_SYN)
  196                 ;
  197         if (flags & LINUX_MSG_CONFIRM)
  198                 ;
  199         if (flags & LINUX_MSG_RST)
  200                 ;
  201         if (flags & LINUX_MSG_ERRQUEUE)
  202                 ;
  203         if (flags & LINUX_MSG_NOSIGNAL)
  204                 ;
  205 #endif
  206         return ret_flags;
  207 }
  208 
  209 /* Return 0 if IP_HDRINCL is set for the given socket. */
  210 static int
  211 linux_check_hdrincl(struct thread *td, int s)
  212 {
  213         struct getsockopt_args /* {
  214                 int s;
  215                 int level;
  216                 int name;
  217                 caddr_t val;
  218                 int *avalsize;
  219         } */ bsd_args;
  220         int error;
  221         caddr_t sg, val, valsize;
  222         int size_val = sizeof val;
  223         int optval;
  224 
  225         sg = stackgap_init();
  226         val = stackgap_alloc(&sg, sizeof(int));
  227         valsize = stackgap_alloc(&sg, sizeof(int));
  228 
  229         if ((error = copyout(&size_val, valsize, sizeof(size_val))))
  230                 return (error);
  231 
  232         bsd_args.s = s;
  233         bsd_args.level = IPPROTO_IP;
  234         bsd_args.name = IP_HDRINCL;
  235         bsd_args.val = val;
  236         bsd_args.avalsize = (int *)valsize;
  237         if ((error = getsockopt(td, &bsd_args)))
  238                 return (error);
  239 
  240         if ((error = copyin(val, &optval, sizeof(optval))))
  241                 return (error);
  242 
  243         return (optval == 0);
  244 }
  245 
  246 /*
  247  * Updated sendto() when IP_HDRINCL is set:
  248  * tweak endian-dependent fields in the IP packet.
  249  */
  250 static int
  251 linux_sendto_hdrincl(struct thread *td, struct sendto_args *bsd_args)
  252 {
  253 /*
  254  * linux_ip_copysize defines how many bytes we should copy
  255  * from the beginning of the IP packet before we customize it for BSD.
  256  * It should include all the fields we modify (ip_len and ip_off)
  257  * and be as small as possible to minimize copying overhead.
  258  */
  259 #define linux_ip_copysize       8
  260 
  261         caddr_t sg;
  262         struct ip *packet;
  263         struct msghdr *msg;
  264         struct iovec *iov;
  265 
  266         int error;
  267         struct  sendmsg_args /* {
  268                 int s;
  269                 caddr_t msg;
  270                 int flags;
  271         } */ sendmsg_args;
  272 
  273         /* Check the packet isn't too small before we mess with it */
  274         if (bsd_args->len < linux_ip_copysize)
  275                 return (EINVAL);
  276 
  277         /*
  278          * Tweaking the user buffer in place would be bad manners.
  279          * We create a corrected IP header with just the needed length,
  280          * then use an iovec to glue it to the rest of the user packet
  281          * when calling sendmsg().
  282          */
  283         sg = stackgap_init();
  284         packet = (struct ip *)stackgap_alloc(&sg, linux_ip_copysize);
  285         msg = (struct msghdr *)stackgap_alloc(&sg, sizeof(*msg));
  286         iov = (struct iovec *)stackgap_alloc(&sg, sizeof(*iov)*2);
  287 
  288         /* Make a copy of the beginning of the packet to be sent */
  289         if ((error = copyin(bsd_args->buf, packet, linux_ip_copysize)))
  290                 return (error);
  291 
  292         /* Convert fields from Linux to BSD raw IP socket format */
  293         packet->ip_len = bsd_args->len;
  294         packet->ip_off = ntohs(packet->ip_off);
  295 
  296         /* Prepare the msghdr and iovec structures describing the new packet */
  297         msg->msg_name = bsd_args->to;
  298         msg->msg_namelen = bsd_args->tolen;
  299         msg->msg_iov = iov;
  300         msg->msg_iovlen = 2;
  301         msg->msg_control = NULL;
  302         msg->msg_controllen = 0;
  303         msg->msg_flags = 0;
  304         iov[0].iov_base = (char *)packet;
  305         iov[0].iov_len = linux_ip_copysize;
  306         iov[1].iov_base = (char *)(bsd_args->buf) + linux_ip_copysize;
  307         iov[1].iov_len = bsd_args->len - linux_ip_copysize;
  308 
  309         sendmsg_args.s = bsd_args->s;
  310         sendmsg_args.msg = (caddr_t)msg;
  311         sendmsg_args.flags = bsd_args->flags;
  312         return (sendmsg(td, &sendmsg_args));
  313 }
  314 
  315 struct linux_socket_args {
  316         int domain;
  317         int type;
  318         int protocol;
  319 };
  320 
  321 static int
  322 linux_socket(struct thread *td, struct linux_socket_args *args)
  323 {
  324         struct linux_socket_args linux_args;
  325         struct socket_args /* {
  326                 int domain;
  327                 int type;
  328                 int protocol;
  329         } */ bsd_args;
  330         int error;
  331         int retval_socket;
  332 
  333         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  334                 return (error);
  335 
  336         bsd_args.protocol = linux_args.protocol;
  337         bsd_args.type = linux_args.type;
  338         bsd_args.domain = linux_to_bsd_domain(linux_args.domain);
  339         if (bsd_args.domain == -1)
  340                 return (EINVAL);
  341 
  342         retval_socket = socket(td, &bsd_args);
  343         if (bsd_args.type == SOCK_RAW
  344             && (bsd_args.protocol == IPPROTO_RAW || bsd_args.protocol == 0)
  345             && bsd_args.domain == AF_INET
  346             && retval_socket >= 0) {
  347                 /* It's a raw IP socket: set the IP_HDRINCL option. */
  348                 struct setsockopt_args /* {
  349                         int s;
  350                         int level;
  351                         int name;
  352                         caddr_t val;
  353                         int valsize;
  354                 } */ bsd_setsockopt_args;
  355                 caddr_t sg;
  356                 int *hdrincl;
  357 
  358                 sg = stackgap_init();
  359                 hdrincl = (int *)stackgap_alloc(&sg, sizeof(*hdrincl));
  360                 *hdrincl = 1;
  361                 bsd_setsockopt_args.s = td->td_retval[0];
  362                 bsd_setsockopt_args.level = IPPROTO_IP;
  363                 bsd_setsockopt_args.name = IP_HDRINCL;
  364                 bsd_setsockopt_args.val = (caddr_t)hdrincl;
  365                 bsd_setsockopt_args.valsize = sizeof(*hdrincl);
  366                 /* We ignore any error returned by setsockopt() */
  367                 setsockopt(td, &bsd_setsockopt_args);
  368                 /* Copy back the return value from socket() */
  369                 td->td_retval[0] = bsd_setsockopt_args.s;
  370         }
  371 
  372         return (retval_socket);
  373 }
  374 
  375 struct linux_bind_args {
  376         int s;
  377         struct sockaddr *name;
  378         int namelen;
  379 };
  380 
  381 static int
  382 linux_bind(struct thread *td, struct linux_bind_args *args)
  383 {
  384         struct linux_bind_args linux_args;
  385         struct bind_args /* {
  386                 int s;
  387                 caddr_t name;
  388                 int namelen;
  389         } */ bsd_args;
  390         int error;
  391 
  392         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  393                 return (error);
  394 
  395         bsd_args.s = linux_args.s;
  396         bsd_args.name = (caddr_t)linux_args.name;
  397         bsd_args.namelen = linux_to_bsd_namelen(bsd_args.name, linux_args.namelen);
  398         return (bind(td, &bsd_args));
  399 }
  400 
  401 struct linux_connect_args {
  402         int s;
  403         struct sockaddr * name;
  404         int namelen;
  405 };
  406 int linux_connect(struct thread *, struct linux_connect_args *);
  407 #endif /* !__alpha__*/
  408 
  409 int
  410 linux_connect(struct thread *td, struct linux_connect_args *args)
  411 {
  412         struct linux_connect_args linux_args;
  413         struct connect_args /* {
  414                 int s;
  415                 caddr_t name;
  416                 int namelen;
  417         } */ bsd_args;
  418         struct socket *so;
  419         u_int fflag;
  420         int error;
  421 
  422 #ifdef __alpha__
  423         bcopy(args, &linux_args, sizeof(linux_args));
  424 #else
  425         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  426                 return (error);
  427 #endif /* __alpha__ */
  428 
  429         bsd_args.s = linux_args.s;
  430         bsd_args.name = (caddr_t)linux_args.name;
  431         bsd_args.namelen = linux_to_bsd_namelen(bsd_args.name, linux_args.namelen);
  432         error = connect(td, &bsd_args);
  433         if (error != EISCONN)
  434                 return (error);
  435 
  436         /*
  437          * Linux doesn't return EISCONN the first time it occurs,
  438          * when on a non-blocking socket. Instead it returns the
  439          * error getsockopt(SOL_SOCKET, SO_ERROR) would return on BSD.
  440          */
  441         if ((error = fgetsock(td, linux_args.s, &so, &fflag)) != 0)
  442                 return(error);
  443         error = EISCONN;
  444         if (fflag & FNONBLOCK) {
  445                 if (so->so_emuldata == 0)
  446                         error = so->so_error;
  447                 so->so_emuldata = (void *)1;
  448         }
  449         fputsock(so);
  450         return (error);
  451 }
  452 
  453 #ifndef __alpha__
  454 
  455 struct linux_listen_args {
  456         int s;
  457         int backlog;
  458 };
  459 
  460 static int
  461 linux_listen(struct thread *td, struct linux_listen_args *args)
  462 {
  463         struct linux_listen_args linux_args;
  464         struct listen_args /* {
  465                 int s;
  466                 int backlog;
  467         } */ bsd_args;
  468         int error;
  469 
  470         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  471                 return (error);
  472 
  473         bsd_args.s = linux_args.s;
  474         bsd_args.backlog = linux_args.backlog;
  475         return (listen(td, &bsd_args));
  476 }
  477 
  478 struct linux_accept_args {
  479         int s;
  480         struct sockaddr *addr;
  481         int *namelen;
  482 };
  483 
  484 static int
  485 linux_accept(struct thread *td, struct linux_accept_args *args)
  486 {
  487         struct linux_accept_args linux_args;
  488         struct accept_args /* {
  489                 int s;
  490                 caddr_t name;
  491                 int *anamelen;
  492         } */ bsd_args;
  493         struct fcntl_args /* {
  494                 int fd;
  495                 int cmd;
  496                 long arg;
  497         } */ f_args;
  498         int error;
  499 
  500         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  501                 return (error);
  502 
  503         bsd_args.s = linux_args.s;
  504         bsd_args.name = (caddr_t)linux_args.addr;
  505         bsd_args.anamelen = linux_args.namelen;
  506         error = oaccept(td, &bsd_args);
  507         if (error)
  508                 return (error);
  509 
  510         /*
  511          * linux appears not to copy flags from the parent socket to the
  512          * accepted one, so we must clear the flags in the new descriptor.
  513          * Ignore any errors, because we already have an open fd.
  514          */
  515         f_args.fd = td->td_retval[0];
  516         f_args.cmd = F_SETFL;
  517         f_args.arg = 0;
  518         (void)fcntl(td, &f_args);
  519         td->td_retval[0] = f_args.fd;
  520         return (0);
  521 }
  522 
  523 struct linux_getsockname_args {
  524         int s;
  525         struct sockaddr *addr;
  526         int *namelen;
  527 };
  528 
  529 static int
  530 linux_getsockname(struct thread *td, struct linux_getsockname_args *args)
  531 {
  532         struct linux_getsockname_args linux_args;
  533         struct getsockname_args /* {
  534                 int fdes;
  535                 caddr_t asa;
  536                 int *alen;
  537         } */ bsd_args;
  538         int error;
  539 
  540         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  541                 return (error);
  542 
  543         bsd_args.fdes = linux_args.s;
  544         bsd_args.asa = (caddr_t) linux_args.addr;
  545         bsd_args.alen = linux_args.namelen;
  546         return (ogetsockname(td, &bsd_args));
  547 }
  548 
  549 struct linux_getpeername_args {
  550         int s;
  551         struct sockaddr *addr;
  552         int *namelen;
  553 };
  554 
  555 static int
  556 linux_getpeername(struct thread *td, struct linux_getpeername_args *args)
  557 {
  558         struct linux_getpeername_args linux_args;
  559         struct ogetpeername_args /* {
  560                 int fdes;
  561                 caddr_t asa;
  562                 int *alen;
  563         } */ bsd_args;
  564         int error;
  565 
  566         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  567                 return (error);
  568 
  569         bsd_args.fdes = linux_args.s;
  570         bsd_args.asa = (caddr_t) linux_args.addr;
  571         bsd_args.alen = linux_args.namelen;
  572         return (ogetpeername(td, &bsd_args));
  573 }
  574 
  575 struct linux_socketpair_args {
  576         int domain;
  577         int type;
  578         int protocol;
  579         int *rsv;
  580 };
  581 
  582 static int
  583 linux_socketpair(struct thread *td, struct linux_socketpair_args *args)
  584 {
  585         struct linux_socketpair_args linux_args;
  586         struct socketpair_args /* {
  587                 int domain;
  588                 int type;
  589                 int protocol;
  590                 int *rsv;
  591         } */ bsd_args;
  592         int error;
  593 
  594         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  595                 return (error);
  596 
  597         bsd_args.domain = linux_to_bsd_domain(linux_args.domain);
  598         if (bsd_args.domain == -1)
  599                 return (EINVAL);
  600 
  601         bsd_args.type = linux_args.type;
  602         bsd_args.protocol = linux_args.protocol;
  603         bsd_args.rsv = linux_args.rsv;
  604         return (socketpair(td, &bsd_args));
  605 }
  606 
  607 struct linux_send_args {
  608         int s;
  609         void *msg;
  610         int len;
  611         int flags;
  612 };
  613 
  614 static int
  615 linux_send(struct thread *td, struct linux_send_args *args)
  616 {
  617         struct linux_send_args linux_args;
  618         struct osend_args /* {
  619                 int s;
  620                 caddr_t buf;
  621                 int len;
  622                 int flags;
  623         } */ bsd_args;
  624         int error;
  625 
  626         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  627                 return (error);
  628 
  629         bsd_args.s = linux_args.s;
  630         bsd_args.buf = linux_args.msg;
  631         bsd_args.len = linux_args.len;
  632         bsd_args.flags = linux_args.flags;
  633         return (osend(td, &bsd_args));
  634 }
  635 
  636 struct linux_recv_args {
  637         int s;
  638         void *msg;
  639         int len;
  640         int flags;
  641 };
  642 
  643 static int
  644 linux_recv(struct thread *td, struct linux_recv_args *args)
  645 {
  646         struct linux_recv_args linux_args;
  647         struct orecv_args /* {
  648                 int s;
  649                 caddr_t buf;
  650                 int len;
  651                 int flags;
  652         } */ bsd_args;
  653         int error;
  654 
  655         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  656                 return (error);
  657 
  658         bsd_args.s = linux_args.s;
  659         bsd_args.buf = linux_args.msg;
  660         bsd_args.len = linux_args.len;
  661         bsd_args.flags = linux_args.flags;
  662         return (orecv(td, &bsd_args));
  663 }
  664 
  665 struct linux_sendto_args {
  666         int s;
  667         void *msg;
  668         int len;
  669         int flags;
  670         caddr_t to;
  671         int tolen;
  672 };
  673 
  674 static int
  675 linux_sendto(struct thread *td, struct linux_sendto_args *args)
  676 {
  677         struct linux_sendto_args linux_args;
  678         struct sendto_args /* {
  679                 int s;
  680                 caddr_t buf;
  681                 size_t len;
  682                 int flags;
  683                 caddr_t to;
  684                 int tolen;
  685         } */ bsd_args;
  686         int error;
  687 
  688         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  689                 return (error);
  690 
  691         bsd_args.s = linux_args.s;
  692         bsd_args.buf = linux_args.msg;
  693         bsd_args.len = linux_args.len;
  694         bsd_args.flags = linux_args.flags;
  695         bsd_args.to = linux_args.to;
  696         bsd_args.tolen = linux_args.tolen;
  697 
  698         if (linux_check_hdrincl(td, linux_args.s) == 0)
  699                 /* IP_HDRINCL set, tweak the packet before sending */
  700                 return (linux_sendto_hdrincl(td, &bsd_args));
  701 
  702         return (sendto(td, &bsd_args));
  703 }
  704 
  705 struct linux_recvfrom_args {
  706         int s;
  707         void *buf;
  708         int len;
  709         int flags;
  710         caddr_t from;
  711         int *fromlen;
  712 };
  713 
  714 static int
  715 linux_recvfrom(struct thread *td, struct linux_recvfrom_args *args)
  716 {
  717         struct linux_recvfrom_args linux_args;
  718         struct recvfrom_args /* {
  719                 int s;
  720                 caddr_t buf;
  721                 size_t len;
  722                 int flags;
  723                 caddr_t from;
  724                 int *fromlenaddr;
  725         } */ bsd_args;
  726         int error;
  727 
  728         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  729                 return (error);
  730 
  731         bsd_args.s = linux_args.s;
  732         bsd_args.buf = linux_args.buf;
  733         bsd_args.len = linux_args.len;
  734         bsd_args.flags = linux_to_bsd_msg_flags(linux_args.flags);
  735         bsd_args.from = linux_args.from;
  736         bsd_args.fromlenaddr = linux_args.fromlen;
  737         return (orecvfrom(td, &bsd_args));
  738 }
  739 
  740 struct linux_recvmsg_args {
  741         int s;
  742         struct msghdr *msg;
  743         int flags;
  744 };
  745 
  746 static int
  747 linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args)
  748 {
  749         struct linux_recvmsg_args linux_args;
  750         struct recvmsg_args /* {
  751                 int     s;
  752                 struct  msghdr *msg;
  753                 int     flags;
  754         } */ bsd_args;
  755         int error;
  756 
  757         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  758                 return (error);
  759 
  760         bsd_args.s = linux_args.s;
  761         bsd_args.msg = linux_args.msg;
  762         bsd_args.flags = linux_to_bsd_msg_flags(linux_args.flags);
  763         return (recvmsg(td, &bsd_args));
  764 }
  765 
  766 struct linux_shutdown_args {
  767         int s;
  768         int how;
  769 };
  770 
  771 static int
  772 linux_shutdown(struct thread *td, struct linux_shutdown_args *args)
  773 {
  774         struct linux_shutdown_args linux_args;
  775         struct shutdown_args /* {
  776                 int s;
  777                 int how;
  778         } */ bsd_args;
  779         int error;
  780 
  781         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  782                 return (error);
  783 
  784         bsd_args.s = linux_args.s;
  785         bsd_args.how = linux_args.how;
  786         return (shutdown(td, &bsd_args));
  787 }
  788 
  789 struct linux_setsockopt_args {
  790         int s;
  791         int level;
  792         int optname;
  793         void *optval;
  794         int optlen;
  795 };
  796 
  797 static int
  798 linux_setsockopt(struct thread *td, struct linux_setsockopt_args *args)
  799 {
  800         struct linux_setsockopt_args linux_args;
  801         struct setsockopt_args /* {
  802                 int s;
  803                 int level;
  804                 int name;
  805                 caddr_t val;
  806                 int valsize;
  807         } */ bsd_args;
  808         int error, name;
  809 
  810         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  811                 return (error);
  812 
  813         bsd_args.s = linux_args.s;
  814         bsd_args.level = linux_to_bsd_sockopt_level(linux_args.level);
  815         switch (bsd_args.level) {
  816         case SOL_SOCKET:
  817                 name = linux_to_bsd_so_sockopt(linux_args.optname);
  818                 break;
  819         case IPPROTO_IP:
  820                 name = linux_to_bsd_ip_sockopt(linux_args.optname);
  821                 break;
  822         case IPPROTO_TCP:
  823                 /* Linux TCP option values match BSD's */
  824                 name = linux_args.optname;
  825                 break;
  826         default:
  827                 name = -1;
  828                 break;
  829         }
  830         if (name == -1)
  831                 return (EINVAL);
  832 
  833         bsd_args.name = name;
  834         bsd_args.val = linux_args.optval;
  835         bsd_args.valsize = linux_args.optlen;
  836         return (setsockopt(td, &bsd_args));
  837 }
  838 
  839 struct linux_getsockopt_args {
  840         int s;
  841         int level;
  842         int optname;
  843         void *optval;
  844         int *optlen;
  845 };
  846 
  847 static int
  848 linux_getsockopt(struct thread *td, struct linux_getsockopt_args *args)
  849 {
  850         struct linux_getsockopt_args linux_args;
  851         struct getsockopt_args /* {
  852                 int s;
  853                 int level;
  854                 int name;
  855                 caddr_t val;
  856                 int *avalsize;
  857         } */ bsd_args;
  858         int error, name;
  859 
  860         if ((error = copyin(args, &linux_args, sizeof(linux_args))))
  861                 return (error);
  862 
  863         bsd_args.s = linux_args.s;
  864         bsd_args.level = linux_to_bsd_sockopt_level(linux_args.level);
  865         switch (bsd_args.level) {
  866         case SOL_SOCKET:
  867                 name = linux_to_bsd_so_sockopt(linux_args.optname);
  868                 break;
  869         case IPPROTO_IP:
  870                 name = linux_to_bsd_ip_sockopt(linux_args.optname);
  871                 break;
  872         case IPPROTO_TCP:
  873                 /* Linux TCP option values match BSD's */
  874                 name = linux_args.optname;
  875                 break;
  876         default:
  877                 name = -1;
  878                 break;
  879         }
  880         if (name == -1)
  881                 return (EINVAL);
  882 
  883         bsd_args.name = name;
  884         bsd_args.val = linux_args.optval;
  885         bsd_args.avalsize = linux_args.optlen;
  886         return (getsockopt(td, &bsd_args));
  887 }
  888 
  889 int
  890 linux_socketcall(struct thread *td, struct linux_socketcall_args *args)
  891 {
  892         void *arg = (void *)args->args;
  893 
  894         switch (args->what) {
  895         case LINUX_SOCKET:
  896                 return (linux_socket(td, arg));
  897         case LINUX_BIND:
  898                 return (linux_bind(td, arg));
  899         case LINUX_CONNECT:
  900                 return (linux_connect(td, arg));
  901         case LINUX_LISTEN:
  902                 return (linux_listen(td, arg));
  903         case LINUX_ACCEPT:
  904                 return (linux_accept(td, arg));
  905         case LINUX_GETSOCKNAME:
  906                 return (linux_getsockname(td, arg));
  907         case LINUX_GETPEERNAME:
  908                 return (linux_getpeername(td, arg));
  909         case LINUX_SOCKETPAIR:
  910                 return (linux_socketpair(td, arg));
  911         case LINUX_SEND:
  912                 return (linux_send(td, arg));
  913         case LINUX_RECV:
  914                 return (linux_recv(td, arg));
  915         case LINUX_SENDTO:
  916                 return (linux_sendto(td, arg));
  917         case LINUX_RECVFROM:
  918                 return (linux_recvfrom(td, arg));
  919         case LINUX_SHUTDOWN:
  920                 return (linux_shutdown(td, arg));
  921         case LINUX_SETSOCKOPT:
  922                 return (linux_setsockopt(td, arg));
  923         case LINUX_GETSOCKOPT:
  924                 return (linux_getsockopt(td, arg));
  925         case LINUX_SENDMSG:
  926                 do {
  927                         int error;
  928                         int level;
  929                         caddr_t control;
  930                         struct {
  931                                 int s;
  932                                 const struct msghdr *msg;
  933                                 int flags;
  934                         } *uap = arg;
  935 
  936                         error = copyin(&uap->msg->msg_control, &control,
  937                             sizeof(caddr_t));
  938                         if (error)
  939                                 return (error);
  940 
  941                         if (control == NULL)
  942                                 goto done;
  943 
  944                         error = copyin(&((struct cmsghdr*)control)->cmsg_level,
  945                             &level, sizeof(int));
  946                         if (error)
  947                                 return (error);
  948 
  949                         if (level == 1) {
  950                                 /*
  951                                  * Linux thinks that SOL_SOCKET is 1; we know
  952                                  * that it's really 0xffff, of course.
  953                                  */
  954                                 level = SOL_SOCKET;
  955                                 error = copyout(&level,
  956                                     &((struct cmsghdr *)control)->cmsg_level,
  957                                     sizeof(int));
  958                                 if (error)
  959                                         return (error);
  960                         }
  961                 done:
  962                         return (sendmsg(td, arg));
  963                 } while (0);
  964         case LINUX_RECVMSG:
  965                 return (linux_recvmsg(td, arg));
  966         }
  967 
  968         uprintf("LINUX: 'socket' typ=%d not implemented\n", args->what);
  969         return (ENOSYS);
  970 }
  971 #endif  /*!__alpha__*/

Cache object: b5c20da128d15f5d869d9c3c00cbb6f7


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.