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 * $FreeBSD: head/sys/compat/linux/linux_socket.c 103839 2002-09-23 06:17:54Z 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 */
61static int
62linux_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__
79static int
80linux_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
100static int
101linux_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
111static int
112linux_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
138static int
139linux_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
169static int
170linux_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. */
210static int
211linux_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 */
250static int
251linux_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
315struct linux_socket_args {
316 int domain;
317 int type;
318 int protocol;
319};
320
321static int
322linux_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
375struct linux_bind_args {
376 int s;
377 struct sockaddr *name;
378 int namelen;
379};
380
381static int
382linux_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
401struct linux_connect_args {
402 int s;
403 struct sockaddr * name;
404 int namelen;
405};
406int linux_connect(struct thread *, struct linux_connect_args *);
407#endif /* !__alpha__*/
408
409int
410linux_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
455struct linux_listen_args {
456 int s;
457 int backlog;
458};
459
460static int
461linux_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
478struct linux_accept_args {
479 int s;
480 struct sockaddr *addr;
481 int *namelen;
482};
483
484static int
485linux_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 = accept(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
523struct linux_getsockname_args {
524 int s;
525 struct sockaddr *addr;
526 int *namelen;
527};
528
529static int
530linux_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 (getsockname(td, &bsd_args));
547}
548
549struct linux_getpeername_args {
550 int s;
551 struct sockaddr *addr;
552 int *namelen;
553};
554
555static int
556linux_getpeername(struct thread *td, struct linux_getpeername_args *args)
557{
558 struct linux_getpeername_args linux_args;
559 struct getpeername_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 (getpeername(td, &bsd_args));
573}
574
575struct linux_socketpair_args {
576 int domain;
577 int type;
578 int protocol;
579 int *rsv;
580};
581
582static int
583linux_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
607struct linux_send_args {
608 int s;
609 void *msg;
610 int len;
611 int flags;
612};
613
614static int
615linux_send(struct thread *td, struct linux_send_args *args)
616{
617 struct linux_send_args linux_args;
618 struct sendto_args /* {
619 int s;
620 caddr_t buf;
621 size_t len;
622 int flags;
623 caddr_t to;
624 int tolen;
625 } */ bsd_args;
626 int error;
627
628 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
629 return (error);
630
631 bsd_args.s = linux_args.s;
632 bsd_args.buf = linux_args.msg;
633 bsd_args.len = linux_args.len;
634 bsd_args.flags = linux_args.flags;
635 bsd_args.to = NULL;
636 bsd_args.tolen = 0;
637 return (sendto(td, &bsd_args));
638}
639
640struct linux_recv_args {
641 int s;
642 void *msg;
643 int len;
644 int flags;
645};
646
647static int
648linux_recv(struct thread *td, struct linux_recv_args *args)
649{
650 struct linux_recv_args linux_args;
651 struct recvfrom_args /* {
652 int s;
653 caddr_t buf;
654 int len;
655 int flags;
656 caddr_t from;
657 int fromlen;
658 } */ bsd_args;
659 int error;
660
661 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
662 return (error);
663
664 bsd_args.s = linux_args.s;
665 bsd_args.buf = linux_args.msg;
666 bsd_args.len = linux_args.len;
667 bsd_args.flags = linux_args.flags;
668 bsd_args.from = NULL;
669 bsd_args.fromlenaddr = NULL;
670 return (recvfrom(td, &bsd_args));
671}
672
673struct linux_sendto_args {
674 int s;
675 void *msg;
676 int len;
677 int flags;
678 caddr_t to;
679 int tolen;
680};
681
682static int
683linux_sendto(struct thread *td, struct linux_sendto_args *args)
684{
685 struct linux_sendto_args linux_args;
686 struct sendto_args /* {
687 int s;
688 caddr_t buf;
689 size_t len;
690 int flags;
691 caddr_t to;
692 int tolen;
693 } */ bsd_args;
694 int error;
695
696 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
697 return (error);
698
699 bsd_args.s = linux_args.s;
700 bsd_args.buf = linux_args.msg;
701 bsd_args.len = linux_args.len;
702 bsd_args.flags = linux_args.flags;
703 bsd_args.to = linux_args.to;
704 bsd_args.tolen = linux_args.tolen;
705
706 if (linux_check_hdrincl(td, linux_args.s) == 0)
707 /* IP_HDRINCL set, tweak the packet before sending */
708 return (linux_sendto_hdrincl(td, &bsd_args));
709
710 return (sendto(td, &bsd_args));
711}
712
713struct linux_recvfrom_args {
714 int s;
715 void *buf;
716 int len;
717 int flags;
718 caddr_t from;
719 int *fromlen;
720};
721
722static int
723linux_recvfrom(struct thread *td, struct linux_recvfrom_args *args)
724{
725 struct linux_recvfrom_args linux_args;
726 struct recvfrom_args /* {
727 int s;
728 caddr_t buf;
729 size_t len;
730 int flags;
731 caddr_t from;
732 int *fromlenaddr;
733 } */ bsd_args;
734 int error;
735
736 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
737 return (error);
738
739 bsd_args.s = linux_args.s;
740 bsd_args.buf = linux_args.buf;
741 bsd_args.len = linux_args.len;
742 bsd_args.flags = linux_to_bsd_msg_flags(linux_args.flags);
743 bsd_args.from = linux_args.from;
744 bsd_args.fromlenaddr = linux_args.fromlen;
745 return (recvfrom(td, &bsd_args));
746}
747
748struct linux_recvmsg_args {
749 int s;
750 struct msghdr *msg;
751 int flags;
752};
753
754static int
755linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args)
756{
757 struct linux_recvmsg_args linux_args;
758 struct recvmsg_args /* {
759 int s;
760 struct msghdr *msg;
761 int flags;
762 } */ bsd_args;
763 int error;
764
765 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
766 return (error);
767
768 bsd_args.s = linux_args.s;
769 bsd_args.msg = linux_args.msg;
770 bsd_args.flags = linux_to_bsd_msg_flags(linux_args.flags);
771 return (recvmsg(td, &bsd_args));
772}
773
774struct linux_shutdown_args {
775 int s;
776 int how;
777};
778
779static int
780linux_shutdown(struct thread *td, struct linux_shutdown_args *args)
781{
782 struct linux_shutdown_args linux_args;
783 struct shutdown_args /* {
784 int s;
785 int how;
786 } */ bsd_args;
787 int error;
788
789 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
790 return (error);
791
792 bsd_args.s = linux_args.s;
793 bsd_args.how = linux_args.how;
794 return (shutdown(td, &bsd_args));
795}
796
797struct linux_setsockopt_args {
798 int s;
799 int level;
800 int optname;
801 void *optval;
802 int optlen;
803};
804
805static int
806linux_setsockopt(struct thread *td, struct linux_setsockopt_args *args)
807{
808 struct linux_setsockopt_args linux_args;
809 struct setsockopt_args /* {
810 int s;
811 int level;
812 int name;
813 caddr_t val;
814 int valsize;
815 } */ bsd_args;
816 int error, name;
817
818 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
819 return (error);
820
821 bsd_args.s = linux_args.s;
822 bsd_args.level = linux_to_bsd_sockopt_level(linux_args.level);
823 switch (bsd_args.level) {
824 case SOL_SOCKET:
825 name = linux_to_bsd_so_sockopt(linux_args.optname);
826 break;
827 case IPPROTO_IP:
828 name = linux_to_bsd_ip_sockopt(linux_args.optname);
829 break;
830 case IPPROTO_TCP:
831 /* Linux TCP option values match BSD's */
832 name = linux_args.optname;
833 break;
834 default:
835 name = -1;
836 break;
837 }
838 if (name == -1)
839 return (EINVAL);
840
841 bsd_args.name = name;
842 bsd_args.val = linux_args.optval;
843 bsd_args.valsize = linux_args.optlen;
844 return (setsockopt(td, &bsd_args));
845}
846
847struct linux_getsockopt_args {
848 int s;
849 int level;
850 int optname;
851 void *optval;
852 int *optlen;
853};
854
855static int
856linux_getsockopt(struct thread *td, struct linux_getsockopt_args *args)
857{
858 struct linux_getsockopt_args linux_args;
859 struct getsockopt_args /* {
860 int s;
861 int level;
862 int name;
863 caddr_t val;
864 int *avalsize;
865 } */ bsd_args;
866 int error, name;
867
868 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
869 return (error);
870
871 bsd_args.s = linux_args.s;
872 bsd_args.level = linux_to_bsd_sockopt_level(linux_args.level);
873 switch (bsd_args.level) {
874 case SOL_SOCKET:
875 name = linux_to_bsd_so_sockopt(linux_args.optname);
876 break;
877 case IPPROTO_IP:
878 name = linux_to_bsd_ip_sockopt(linux_args.optname);
879 break;
880 case IPPROTO_TCP:
881 /* Linux TCP option values match BSD's */
882 name = linux_args.optname;
883 break;
884 default:
885 name = -1;
886 break;
887 }
888 if (name == -1)
889 return (EINVAL);
890
891 bsd_args.name = name;
892 bsd_args.val = linux_args.optval;
893 bsd_args.avalsize = linux_args.optlen;
894 return (getsockopt(td, &bsd_args));
895}
896
897int
898linux_socketcall(struct thread *td, struct linux_socketcall_args *args)
899{
900 void *arg = (void *)args->args;
901
902 switch (args->what) {
903 case LINUX_SOCKET:
904 return (linux_socket(td, arg));
905 case LINUX_BIND:
906 return (linux_bind(td, arg));
907 case LINUX_CONNECT:
908 return (linux_connect(td, arg));
909 case LINUX_LISTEN:
910 return (linux_listen(td, arg));
911 case LINUX_ACCEPT:
912 return (linux_accept(td, arg));
913 case LINUX_GETSOCKNAME:
914 return (linux_getsockname(td, arg));
915 case LINUX_GETPEERNAME:
916 return (linux_getpeername(td, arg));
917 case LINUX_SOCKETPAIR:
918 return (linux_socketpair(td, arg));
919 case LINUX_SEND:
920 return (linux_send(td, arg));
921 case LINUX_RECV:
922 return (linux_recv(td, arg));
923 case LINUX_SENDTO:
924 return (linux_sendto(td, arg));
925 case LINUX_RECVFROM:
926 return (linux_recvfrom(td, arg));
927 case LINUX_SHUTDOWN:
928 return (linux_shutdown(td, arg));
929 case LINUX_SETSOCKOPT:
930 return (linux_setsockopt(td, arg));
931 case LINUX_GETSOCKOPT:
932 return (linux_getsockopt(td, arg));
933 case LINUX_SENDMSG:
934 do {
935 int error;
936 int level;
937 caddr_t control;
938 struct {
939 int s;
940 const struct msghdr *msg;
941 int flags;
942 } *uap = arg;
943
944 error = copyin(&uap->msg->msg_control, &control,
945 sizeof(caddr_t));
946 if (error)
947 return (error);
948
949 if (control == NULL)
950 goto done;
951
952 error = copyin(&((struct cmsghdr*)control)->cmsg_level,
953 &level, sizeof(int));
954 if (error)
955 return (error);
956
957 if (level == 1) {
958 /*
959 * Linux thinks that SOL_SOCKET is 1; we know
960 * that it's really 0xffff, of course.
961 */
962 level = SOL_SOCKET;
963 error = copyout(&level,
964 &((struct cmsghdr *)control)->cmsg_level,
965 sizeof(int));
966 if (error)
967 return (error);
968 }
969 done:
970 return (sendmsg(td, arg));
971 } while (0);
972 case LINUX_RECVMSG:
973 return (linux_recvmsg(td, arg));
974 }
975
976 uprintf("LINUX: 'socket' typ=%d not implemented\n", args->what);
977 return (ENOSYS);
978}
979#endif /*!__alpha__*/
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 * $FreeBSD: head/sys/compat/linux/linux_socket.c 103839 2002-09-23 06:17:54Z 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 */
61static int
62linux_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__
79static int
80linux_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
100static int
101linux_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
111static int
112linux_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
138static int
139linux_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
169static int
170linux_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. */
210static int
211linux_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 */
250static int
251linux_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
315struct linux_socket_args {
316 int domain;
317 int type;
318 int protocol;
319};
320
321static int
322linux_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
375struct linux_bind_args {
376 int s;
377 struct sockaddr *name;
378 int namelen;
379};
380
381static int
382linux_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
401struct linux_connect_args {
402 int s;
403 struct sockaddr * name;
404 int namelen;
405};
406int linux_connect(struct thread *, struct linux_connect_args *);
407#endif /* !__alpha__*/
408
409int
410linux_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
455struct linux_listen_args {
456 int s;
457 int backlog;
458};
459
460static int
461linux_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
478struct linux_accept_args {
479 int s;
480 struct sockaddr *addr;
481 int *namelen;
482};
483
484static int
485linux_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 = accept(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
523struct linux_getsockname_args {
524 int s;
525 struct sockaddr *addr;
526 int *namelen;
527};
528
529static int
530linux_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 (getsockname(td, &bsd_args));
547}
548
549struct linux_getpeername_args {
550 int s;
551 struct sockaddr *addr;
552 int *namelen;
553};
554
555static int
556linux_getpeername(struct thread *td, struct linux_getpeername_args *args)
557{
558 struct linux_getpeername_args linux_args;
559 struct getpeername_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 (getpeername(td, &bsd_args));
573}
574
575struct linux_socketpair_args {
576 int domain;
577 int type;
578 int protocol;
579 int *rsv;
580};
581
582static int
583linux_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
607struct linux_send_args {
608 int s;
609 void *msg;
610 int len;
611 int flags;
612};
613
614static int
615linux_send(struct thread *td, struct linux_send_args *args)
616{
617 struct linux_send_args linux_args;
618 struct sendto_args /* {
619 int s;
620 caddr_t buf;
621 size_t len;
622 int flags;
623 caddr_t to;
624 int tolen;
625 } */ bsd_args;
626 int error;
627
628 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
629 return (error);
630
631 bsd_args.s = linux_args.s;
632 bsd_args.buf = linux_args.msg;
633 bsd_args.len = linux_args.len;
634 bsd_args.flags = linux_args.flags;
635 bsd_args.to = NULL;
636 bsd_args.tolen = 0;
637 return (sendto(td, &bsd_args));
638}
639
640struct linux_recv_args {
641 int s;
642 void *msg;
643 int len;
644 int flags;
645};
646
647static int
648linux_recv(struct thread *td, struct linux_recv_args *args)
649{
650 struct linux_recv_args linux_args;
651 struct recvfrom_args /* {
652 int s;
653 caddr_t buf;
654 int len;
655 int flags;
656 caddr_t from;
657 int fromlen;
658 } */ bsd_args;
659 int error;
660
661 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
662 return (error);
663
664 bsd_args.s = linux_args.s;
665 bsd_args.buf = linux_args.msg;
666 bsd_args.len = linux_args.len;
667 bsd_args.flags = linux_args.flags;
668 bsd_args.from = NULL;
669 bsd_args.fromlenaddr = NULL;
670 return (recvfrom(td, &bsd_args));
671}
672
673struct linux_sendto_args {
674 int s;
675 void *msg;
676 int len;
677 int flags;
678 caddr_t to;
679 int tolen;
680};
681
682static int
683linux_sendto(struct thread *td, struct linux_sendto_args *args)
684{
685 struct linux_sendto_args linux_args;
686 struct sendto_args /* {
687 int s;
688 caddr_t buf;
689 size_t len;
690 int flags;
691 caddr_t to;
692 int tolen;
693 } */ bsd_args;
694 int error;
695
696 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
697 return (error);
698
699 bsd_args.s = linux_args.s;
700 bsd_args.buf = linux_args.msg;
701 bsd_args.len = linux_args.len;
702 bsd_args.flags = linux_args.flags;
703 bsd_args.to = linux_args.to;
704 bsd_args.tolen = linux_args.tolen;
705
706 if (linux_check_hdrincl(td, linux_args.s) == 0)
707 /* IP_HDRINCL set, tweak the packet before sending */
708 return (linux_sendto_hdrincl(td, &bsd_args));
709
710 return (sendto(td, &bsd_args));
711}
712
713struct linux_recvfrom_args {
714 int s;
715 void *buf;
716 int len;
717 int flags;
718 caddr_t from;
719 int *fromlen;
720};
721
722static int
723linux_recvfrom(struct thread *td, struct linux_recvfrom_args *args)
724{
725 struct linux_recvfrom_args linux_args;
726 struct recvfrom_args /* {
727 int s;
728 caddr_t buf;
729 size_t len;
730 int flags;
731 caddr_t from;
732 int *fromlenaddr;
733 } */ bsd_args;
734 int error;
735
736 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
737 return (error);
738
739 bsd_args.s = linux_args.s;
740 bsd_args.buf = linux_args.buf;
741 bsd_args.len = linux_args.len;
742 bsd_args.flags = linux_to_bsd_msg_flags(linux_args.flags);
743 bsd_args.from = linux_args.from;
744 bsd_args.fromlenaddr = linux_args.fromlen;
745 return (recvfrom(td, &bsd_args));
746}
747
748struct linux_recvmsg_args {
749 int s;
750 struct msghdr *msg;
751 int flags;
752};
753
754static int
755linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args)
756{
757 struct linux_recvmsg_args linux_args;
758 struct recvmsg_args /* {
759 int s;
760 struct msghdr *msg;
761 int flags;
762 } */ bsd_args;
763 int error;
764
765 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
766 return (error);
767
768 bsd_args.s = linux_args.s;
769 bsd_args.msg = linux_args.msg;
770 bsd_args.flags = linux_to_bsd_msg_flags(linux_args.flags);
771 return (recvmsg(td, &bsd_args));
772}
773
774struct linux_shutdown_args {
775 int s;
776 int how;
777};
778
779static int
780linux_shutdown(struct thread *td, struct linux_shutdown_args *args)
781{
782 struct linux_shutdown_args linux_args;
783 struct shutdown_args /* {
784 int s;
785 int how;
786 } */ bsd_args;
787 int error;
788
789 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
790 return (error);
791
792 bsd_args.s = linux_args.s;
793 bsd_args.how = linux_args.how;
794 return (shutdown(td, &bsd_args));
795}
796
797struct linux_setsockopt_args {
798 int s;
799 int level;
800 int optname;
801 void *optval;
802 int optlen;
803};
804
805static int
806linux_setsockopt(struct thread *td, struct linux_setsockopt_args *args)
807{
808 struct linux_setsockopt_args linux_args;
809 struct setsockopt_args /* {
810 int s;
811 int level;
812 int name;
813 caddr_t val;
814 int valsize;
815 } */ bsd_args;
816 int error, name;
817
818 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
819 return (error);
820
821 bsd_args.s = linux_args.s;
822 bsd_args.level = linux_to_bsd_sockopt_level(linux_args.level);
823 switch (bsd_args.level) {
824 case SOL_SOCKET:
825 name = linux_to_bsd_so_sockopt(linux_args.optname);
826 break;
827 case IPPROTO_IP:
828 name = linux_to_bsd_ip_sockopt(linux_args.optname);
829 break;
830 case IPPROTO_TCP:
831 /* Linux TCP option values match BSD's */
832 name = linux_args.optname;
833 break;
834 default:
835 name = -1;
836 break;
837 }
838 if (name == -1)
839 return (EINVAL);
840
841 bsd_args.name = name;
842 bsd_args.val = linux_args.optval;
843 bsd_args.valsize = linux_args.optlen;
844 return (setsockopt(td, &bsd_args));
845}
846
847struct linux_getsockopt_args {
848 int s;
849 int level;
850 int optname;
851 void *optval;
852 int *optlen;
853};
854
855static int
856linux_getsockopt(struct thread *td, struct linux_getsockopt_args *args)
857{
858 struct linux_getsockopt_args linux_args;
859 struct getsockopt_args /* {
860 int s;
861 int level;
862 int name;
863 caddr_t val;
864 int *avalsize;
865 } */ bsd_args;
866 int error, name;
867
868 if ((error = copyin(args, &linux_args, sizeof(linux_args))))
869 return (error);
870
871 bsd_args.s = linux_args.s;
872 bsd_args.level = linux_to_bsd_sockopt_level(linux_args.level);
873 switch (bsd_args.level) {
874 case SOL_SOCKET:
875 name = linux_to_bsd_so_sockopt(linux_args.optname);
876 break;
877 case IPPROTO_IP:
878 name = linux_to_bsd_ip_sockopt(linux_args.optname);
879 break;
880 case IPPROTO_TCP:
881 /* Linux TCP option values match BSD's */
882 name = linux_args.optname;
883 break;
884 default:
885 name = -1;
886 break;
887 }
888 if (name == -1)
889 return (EINVAL);
890
891 bsd_args.name = name;
892 bsd_args.val = linux_args.optval;
893 bsd_args.avalsize = linux_args.optlen;
894 return (getsockopt(td, &bsd_args));
895}
896
897int
898linux_socketcall(struct thread *td, struct linux_socketcall_args *args)
899{
900 void *arg = (void *)args->args;
901
902 switch (args->what) {
903 case LINUX_SOCKET:
904 return (linux_socket(td, arg));
905 case LINUX_BIND:
906 return (linux_bind(td, arg));
907 case LINUX_CONNECT:
908 return (linux_connect(td, arg));
909 case LINUX_LISTEN:
910 return (linux_listen(td, arg));
911 case LINUX_ACCEPT:
912 return (linux_accept(td, arg));
913 case LINUX_GETSOCKNAME:
914 return (linux_getsockname(td, arg));
915 case LINUX_GETPEERNAME:
916 return (linux_getpeername(td, arg));
917 case LINUX_SOCKETPAIR:
918 return (linux_socketpair(td, arg));
919 case LINUX_SEND:
920 return (linux_send(td, arg));
921 case LINUX_RECV:
922 return (linux_recv(td, arg));
923 case LINUX_SENDTO:
924 return (linux_sendto(td, arg));
925 case LINUX_RECVFROM:
926 return (linux_recvfrom(td, arg));
927 case LINUX_SHUTDOWN:
928 return (linux_shutdown(td, arg));
929 case LINUX_SETSOCKOPT:
930 return (linux_setsockopt(td, arg));
931 case LINUX_GETSOCKOPT:
932 return (linux_getsockopt(td, arg));
933 case LINUX_SENDMSG:
934 do {
935 int error;
936 int level;
937 caddr_t control;
938 struct {
939 int s;
940 const struct msghdr *msg;
941 int flags;
942 } *uap = arg;
943
944 error = copyin(&uap->msg->msg_control, &control,
945 sizeof(caddr_t));
946 if (error)
947 return (error);
948
949 if (control == NULL)
950 goto done;
951
952 error = copyin(&((struct cmsghdr*)control)->cmsg_level,
953 &level, sizeof(int));
954 if (error)
955 return (error);
956
957 if (level == 1) {
958 /*
959 * Linux thinks that SOL_SOCKET is 1; we know
960 * that it's really 0xffff, of course.
961 */
962 level = SOL_SOCKET;
963 error = copyout(&level,
964 &((struct cmsghdr *)control)->cmsg_level,
965 sizeof(int));
966 if (error)
967 return (error);
968 }
969 done:
970 return (sendmsg(td, arg));
971 } while (0);
972 case LINUX_RECVMSG:
973 return (linux_recvmsg(td, arg));
974 }
975
976 uprintf("LINUX: 'socket' typ=%d not implemented\n", args->what);
977 return (ENOSYS);
978}
979#endif /*!__alpha__*/