2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright (c) 1995 Søren Schmidt
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include "opt_inet6.h"
31 #include <sys/param.h>
32 #include <sys/capsicum.h>
33 #include <sys/filedesc.h>
34 #include <sys/limits.h>
35 #include <sys/malloc.h>
38 #include <sys/protosw.h>
39 #include <sys/socket.h>
40 #include <sys/socketvar.h>
41 #include <sys/syscallsubr.h>
42 #include <sys/sysproto.h>
43 #include <sys/vnode.h>
45 #include <sys/unistd.h>
47 #include <security/audit/audit.h>
51 #include <netinet/in.h>
52 #include <netinet/ip.h>
53 #include <netinet/tcp.h>
55 #include <netinet/ip6.h>
56 #include <netinet6/ip6_var.h>
60 #include <compat/freebsd32/freebsd32_util.h>
61 #include <machine/../linux32/linux.h>
62 #include <machine/../linux32/linux32_proto.h>
64 #include <machine/../linux/linux.h>
65 #include <machine/../linux/linux_proto.h>
67 #include <compat/linux/linux_common.h>
68 #include <compat/linux/linux_emul.h>
69 #include <compat/linux/linux_file.h>
70 #include <compat/linux/linux_mib.h>
71 #include <compat/linux/linux_socket.h>
72 #include <compat/linux/linux_time.h>
73 #include <compat/linux/linux_util.h>
75 _Static_assert(offsetof(struct l_ifreq, ifr_ifru) ==
76 offsetof(struct ifreq, ifr_ifru),
77 "Linux ifreq members names should be equal to FreeeBSD");
78 _Static_assert(offsetof(struct l_ifreq, ifr_index) ==
79 offsetof(struct ifreq, ifr_index),
80 "Linux ifreq members names should be equal to FreeeBSD");
81 _Static_assert(offsetof(struct l_ifreq, ifr_name) ==
82 offsetof(struct ifreq, ifr_name),
83 "Linux ifreq members names should be equal to FreeeBSD");
85 #define SECURITY_CONTEXT_STRING "unconfined"
87 static int linux_sendmsg_common(struct thread *, l_int, struct l_msghdr *,
89 static int linux_recvmsg_common(struct thread *, l_int, struct l_msghdr *,
90 l_uint, struct msghdr *);
91 static int linux_set_socket_flags(int, int *);
93 #define SOL_NETLINK 270
96 linux_to_bsd_sockopt_level(int level)
99 if (level == LINUX_SOL_SOCKET)
101 /* Remaining values are RFC-defined protocol numbers. */
106 bsd_to_linux_sockopt_level(int level)
109 if (level == SOL_SOCKET)
110 return (LINUX_SOL_SOCKET);
115 linux_to_bsd_ip_sockopt(int opt)
119 /* known and translated sockopts */
124 case LINUX_IP_HDRINCL:
126 case LINUX_IP_OPTIONS:
128 case LINUX_IP_RECVOPTS:
129 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_RECVOPTS");
130 return (IP_RECVOPTS);
131 case LINUX_IP_RETOPTS:
132 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_REETOPTS");
134 case LINUX_IP_RECVTTL:
135 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_RECVTTL");
137 case LINUX_IP_RECVTOS:
138 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_RECVTOS");
140 case LINUX_IP_FREEBIND:
141 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_FREEBIND");
143 case LINUX_IP_IPSEC_POLICY:
144 /* we have this option, but not documented in ip(4) manpage */
145 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_IPSEC_POLICY");
146 return (IP_IPSEC_POLICY);
147 case LINUX_IP_MINTTL:
148 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_MINTTL");
150 case LINUX_IP_MULTICAST_IF:
151 return (IP_MULTICAST_IF);
152 case LINUX_IP_MULTICAST_TTL:
153 return (IP_MULTICAST_TTL);
154 case LINUX_IP_MULTICAST_LOOP:
155 return (IP_MULTICAST_LOOP);
156 case LINUX_IP_ADD_MEMBERSHIP:
157 return (IP_ADD_MEMBERSHIP);
158 case LINUX_IP_DROP_MEMBERSHIP:
159 return (IP_DROP_MEMBERSHIP);
160 case LINUX_IP_UNBLOCK_SOURCE:
161 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_UNBLOCK_SOURCE");
162 return (IP_UNBLOCK_SOURCE);
163 case LINUX_IP_BLOCK_SOURCE:
164 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_BLOCK_SOURCE");
165 return (IP_BLOCK_SOURCE);
166 case LINUX_IP_ADD_SOURCE_MEMBERSHIP:
167 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_ADD_SOURCE_MEMBERSHIP");
168 return (IP_ADD_SOURCE_MEMBERSHIP);
169 case LINUX_IP_DROP_SOURCE_MEMBERSHIP:
170 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_DROP_SOURCE_MEMBERSHIP");
171 return (IP_DROP_SOURCE_MEMBERSHIP);
172 case LINUX_MCAST_JOIN_GROUP:
173 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_MCAST_JOIN_GROUP");
174 return (MCAST_JOIN_GROUP);
175 case LINUX_MCAST_LEAVE_GROUP:
176 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_MCAST_LEAVE_GROUP");
177 return (MCAST_LEAVE_GROUP);
178 case LINUX_MCAST_JOIN_SOURCE_GROUP:
179 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_MCAST_JOIN_SOURCE_GROUP");
180 return (MCAST_JOIN_SOURCE_GROUP);
181 case LINUX_MCAST_LEAVE_SOURCE_GROUP:
182 LINUX_RATELIMIT_MSG_NOTTESTED("IPv4 socket option IP_MCAST_LEAVE_SOURCE_GROUP");
183 return (MCAST_LEAVE_SOURCE_GROUP);
184 case LINUX_IP_RECVORIGDSTADDR:
185 return (IP_RECVORIGDSTADDR);
187 /* known but not implemented sockopts */
188 case LINUX_IP_ROUTER_ALERT:
189 LINUX_RATELIMIT_MSG_OPT1(
190 "unsupported IPv4 socket option IP_ROUTER_ALERT (%d), you can not do user-space routing from linux programs",
193 case LINUX_IP_PKTINFO:
194 LINUX_RATELIMIT_MSG_OPT1(
195 "unsupported IPv4 socket option IP_PKTINFO (%d), you can not get extended packet info for datagram sockets in linux programs",
198 case LINUX_IP_PKTOPTIONS:
199 LINUX_RATELIMIT_MSG_OPT1(
200 "unsupported IPv4 socket option IP_PKTOPTIONS (%d)",
203 case LINUX_IP_MTU_DISCOVER:
204 LINUX_RATELIMIT_MSG_OPT1(
205 "unsupported IPv4 socket option IP_MTU_DISCOVER (%d), your linux program can not control path-MTU discovery",
208 case LINUX_IP_RECVERR:
209 /* needed by steam */
210 LINUX_RATELIMIT_MSG_OPT1(
211 "unsupported IPv4 socket option IP_RECVERR (%d), you can not get extended reliability info in linux programs",
215 LINUX_RATELIMIT_MSG_OPT1(
216 "unsupported IPv4 socket option IP_MTU (%d), your linux program can not control the MTU on this socket",
219 case LINUX_IP_XFRM_POLICY:
220 LINUX_RATELIMIT_MSG_OPT1(
221 "unsupported IPv4 socket option IP_XFRM_POLICY (%d)",
224 case LINUX_IP_PASSSEC:
225 /* needed by steam */
226 LINUX_RATELIMIT_MSG_OPT1(
227 "unsupported IPv4 socket option IP_PASSSEC (%d), you can not get IPSEC related credential information associated with this socket in linux programs -- if you do not use IPSEC, you can ignore this",
230 case LINUX_IP_TRANSPARENT:
231 /* IP_BINDANY or more? */
232 LINUX_RATELIMIT_MSG_OPT1(
233 "unsupported IPv4 socket option IP_TRANSPARENT (%d), you can not enable transparent proxying in linux programs -- note, IP_FREEBIND is supported, no idea if the FreeBSD IP_BINDANY is equivalent to the Linux IP_TRANSPARENT or not, any info is welcome",
236 case LINUX_IP_NODEFRAG:
237 LINUX_RATELIMIT_MSG_OPT1(
238 "unsupported IPv4 socket option IP_NODEFRAG (%d)",
241 case LINUX_IP_CHECKSUM:
242 LINUX_RATELIMIT_MSG_OPT1(
243 "unsupported IPv4 socket option IP_CHECKSUM (%d)",
246 case LINUX_IP_BIND_ADDRESS_NO_PORT:
247 LINUX_RATELIMIT_MSG_OPT1(
248 "unsupported IPv4 socket option IP_BIND_ADDRESS_NO_PORT (%d)",
251 case LINUX_IP_RECVFRAGSIZE:
252 LINUX_RATELIMIT_MSG_OPT1(
253 "unsupported IPv4 socket option IP_RECVFRAGSIZE (%d)",
256 case LINUX_MCAST_MSFILTER:
257 LINUX_RATELIMIT_MSG_OPT1(
258 "unsupported IPv4 socket option IP_MCAST_MSFILTER (%d)",
261 case LINUX_IP_MULTICAST_ALL:
262 LINUX_RATELIMIT_MSG_OPT1(
263 "unsupported IPv4 socket option IP_MULTICAST_ALL (%d), your linux program will not see all multicast groups joined by the entire system, only those the program joined itself on this socket",
266 case LINUX_IP_UNICAST_IF:
267 LINUX_RATELIMIT_MSG_OPT1(
268 "unsupported IPv4 socket option IP_UNICAST_IF (%d)",
272 /* unknown sockopts */
279 linux_to_bsd_ip6_sockopt(int opt)
283 /* known and translated sockopts */
284 case LINUX_IPV6_2292PKTINFO:
285 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_2292PKTINFO");
286 return (IPV6_2292PKTINFO);
287 case LINUX_IPV6_2292HOPOPTS:
288 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_2292HOPOPTS");
289 return (IPV6_2292HOPOPTS);
290 case LINUX_IPV6_2292DSTOPTS:
291 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_2292DSTOPTS");
292 return (IPV6_2292DSTOPTS);
293 case LINUX_IPV6_2292RTHDR:
294 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_2292RTHDR");
295 return (IPV6_2292RTHDR);
296 case LINUX_IPV6_2292PKTOPTIONS:
297 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_2292PKTOPTIONS");
298 return (IPV6_2292PKTOPTIONS);
299 case LINUX_IPV6_CHECKSUM:
300 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_CHECKSUM");
301 return (IPV6_CHECKSUM);
302 case LINUX_IPV6_2292HOPLIMIT:
303 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_2292HOPLIMIT");
304 return (IPV6_2292HOPLIMIT);
305 case LINUX_IPV6_NEXTHOP:
306 return (IPV6_NEXTHOP);
307 case LINUX_IPV6_UNICAST_HOPS:
308 return (IPV6_UNICAST_HOPS);
309 case LINUX_IPV6_MULTICAST_IF:
310 return (IPV6_MULTICAST_IF);
311 case LINUX_IPV6_MULTICAST_HOPS:
312 return (IPV6_MULTICAST_HOPS);
313 case LINUX_IPV6_MULTICAST_LOOP:
314 return (IPV6_MULTICAST_LOOP);
315 case LINUX_IPV6_ADD_MEMBERSHIP:
316 return (IPV6_JOIN_GROUP);
317 case LINUX_IPV6_DROP_MEMBERSHIP:
318 return (IPV6_LEAVE_GROUP);
319 case LINUX_IPV6_V6ONLY:
320 return (IPV6_V6ONLY);
321 case LINUX_IPV6_IPSEC_POLICY:
322 /* we have this option, but not documented in ip6(4) manpage */
323 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_IPSEC_POLICY");
324 return (IPV6_IPSEC_POLICY);
325 case LINUX_MCAST_JOIN_GROUP:
326 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_JOIN_GROUP");
327 return (IPV6_JOIN_GROUP);
328 case LINUX_MCAST_LEAVE_GROUP:
329 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_LEAVE_GROUP");
330 return (IPV6_LEAVE_GROUP);
331 case LINUX_IPV6_RECVPKTINFO:
332 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_RECVPKTINFO");
333 return (IPV6_RECVPKTINFO);
334 case LINUX_IPV6_PKTINFO:
335 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_PKTINFO");
336 return (IPV6_PKTINFO);
337 case LINUX_IPV6_RECVHOPLIMIT:
338 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_RECVHOPLIMIT");
339 return (IPV6_RECVHOPLIMIT);
340 case LINUX_IPV6_HOPLIMIT:
341 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_HOPLIMIT");
342 return (IPV6_HOPLIMIT);
343 case LINUX_IPV6_RECVHOPOPTS:
344 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_RECVHOPOPTS");
345 return (IPV6_RECVHOPOPTS);
346 case LINUX_IPV6_HOPOPTS:
347 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_HOPOPTS");
348 return (IPV6_HOPOPTS);
349 case LINUX_IPV6_RTHDRDSTOPTS:
350 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_RTHDRDSTOPTS");
351 return (IPV6_RTHDRDSTOPTS);
352 case LINUX_IPV6_RECVRTHDR:
353 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_RECVRTHDR");
354 return (IPV6_RECVRTHDR);
355 case LINUX_IPV6_RTHDR:
356 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_RTHDR");
358 case LINUX_IPV6_RECVDSTOPTS:
359 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_RECVDSTOPTS");
360 return (IPV6_RECVDSTOPTS);
361 case LINUX_IPV6_DSTOPTS:
362 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_DSTOPTS");
363 return (IPV6_DSTOPTS);
364 case LINUX_IPV6_RECVPATHMTU:
365 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_RECVPATHMTU");
366 return (IPV6_RECVPATHMTU);
367 case LINUX_IPV6_PATHMTU:
368 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_PATHMTU");
369 return (IPV6_PATHMTU);
370 case LINUX_IPV6_DONTFRAG:
371 return (IPV6_DONTFRAG);
372 case LINUX_IPV6_AUTOFLOWLABEL:
373 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_AUTOFLOWLABEL");
374 return (IPV6_AUTOFLOWLABEL);
375 case LINUX_IPV6_ORIGDSTADDR:
376 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_ORIGDSTADDR");
377 return (IPV6_ORIGDSTADDR);
378 case LINUX_IPV6_FREEBIND:
379 LINUX_RATELIMIT_MSG_NOTTESTED("IPv6 socket option IPV6_FREEBIND");
380 return (IPV6_BINDANY);
382 /* known but not implemented sockopts */
383 case LINUX_IPV6_ADDRFORM:
384 LINUX_RATELIMIT_MSG_OPT1(
385 "unsupported IPv6 socket option IPV6_ADDRFORM (%d), you linux program can not convert the socket to IPv4",
388 case LINUX_IPV6_AUTHHDR:
389 LINUX_RATELIMIT_MSG_OPT1(
390 "unsupported IPv6 socket option IPV6_AUTHHDR (%d), your linux program can not get the authentication header info of IPv6 packets",
393 case LINUX_IPV6_FLOWINFO:
394 LINUX_RATELIMIT_MSG_OPT1(
395 "unsupported IPv6 socket option IPV6_FLOWINFO (%d), your linux program can not get the flowid of IPv6 packets",
398 case LINUX_IPV6_ROUTER_ALERT:
399 LINUX_RATELIMIT_MSG_OPT1(
400 "unsupported IPv6 socket option IPV6_ROUTER_ALERT (%d), you can not do user-space routing from linux programs",
403 case LINUX_IPV6_MTU_DISCOVER:
404 LINUX_RATELIMIT_MSG_OPT1(
405 "unsupported IPv6 socket option IPV6_MTU_DISCOVER (%d), your linux program can not control path-MTU discovery",
409 LINUX_RATELIMIT_MSG_OPT1(
410 "unsupported IPv6 socket option IPV6_MTU (%d), your linux program can not control the MTU on this socket",
413 case LINUX_IPV6_JOIN_ANYCAST:
414 LINUX_RATELIMIT_MSG_OPT1(
415 "unsupported IPv6 socket option IPV6_JOIN_ANYCAST (%d)",
418 case LINUX_IPV6_LEAVE_ANYCAST:
419 LINUX_RATELIMIT_MSG_OPT1(
420 "unsupported IPv6 socket option IPV6_LEAVE_ANYCAST (%d)",
423 case LINUX_IPV6_MULTICAST_ALL:
424 LINUX_RATELIMIT_MSG_OPT1(
425 "unsupported IPv6 socket option IPV6_MULTICAST_ALL (%d)",
428 case LINUX_IPV6_ROUTER_ALERT_ISOLATE:
429 LINUX_RATELIMIT_MSG_OPT1(
430 "unsupported IPv6 socket option IPV6_ROUTER_ALERT_ISOLATE (%d)",
433 case LINUX_IPV6_FLOWLABEL_MGR:
434 LINUX_RATELIMIT_MSG_OPT1(
435 "unsupported IPv6 socket option IPV6_FLOWLABEL_MGR (%d)",
438 case LINUX_IPV6_FLOWINFO_SEND:
439 LINUX_RATELIMIT_MSG_OPT1(
440 "unsupported IPv6 socket option IPV6_FLOWINFO_SEND (%d)",
443 case LINUX_IPV6_XFRM_POLICY:
444 LINUX_RATELIMIT_MSG_OPT1(
445 "unsupported IPv6 socket option IPV6_XFRM_POLICY (%d)",
448 case LINUX_IPV6_HDRINCL:
449 LINUX_RATELIMIT_MSG_OPT1(
450 "unsupported IPv6 socket option IPV6_HDRINCL (%d)",
453 case LINUX_MCAST_BLOCK_SOURCE:
454 LINUX_RATELIMIT_MSG_OPT1(
455 "unsupported IPv6 socket option MCAST_BLOCK_SOURCE (%d), your linux program may see more multicast stuff than it wants",
458 case LINUX_MCAST_UNBLOCK_SOURCE:
459 LINUX_RATELIMIT_MSG_OPT1(
460 "unsupported IPv6 socket option MCAST_UNBLOCK_SOURCE (%d), your linux program may not see all the multicast stuff it wants",
463 case LINUX_MCAST_JOIN_SOURCE_GROUP:
464 LINUX_RATELIMIT_MSG_OPT1(
465 "unsupported IPv6 socket option MCAST_JOIN_SOURCE_GROUP (%d), your linux program is not able to join a multicast source group",
468 case LINUX_MCAST_LEAVE_SOURCE_GROUP:
469 LINUX_RATELIMIT_MSG_OPT1(
470 "unsupported IPv6 socket option MCAST_LEAVE_SOURCE_GROUP (%d), your linux program is not able to leave a multicast source group -- but it was also not able to join one, so no issue",
473 case LINUX_MCAST_MSFILTER:
474 LINUX_RATELIMIT_MSG_OPT1(
475 "unsupported IPv6 socket option MCAST_MSFILTER (%d), your linux program can not manipulate the multicast filter, it may see more multicast data than it wants to see",
478 case LINUX_IPV6_ADDR_PREFERENCES:
479 LINUX_RATELIMIT_MSG_OPT1(
480 "unsupported IPv6 socket option IPV6_ADDR_PREFERENCES (%d)",
483 case LINUX_IPV6_MINHOPCOUNT:
484 LINUX_RATELIMIT_MSG_OPT1(
485 "unsupported IPv6 socket option IPV6_MINHOPCOUNT (%d)",
488 case LINUX_IPV6_TRANSPARENT:
489 /* IP_BINDANY or more? */
490 LINUX_RATELIMIT_MSG_OPT1(
491 "unsupported IPv6 socket option IPV6_TRANSPARENT (%d), you can not enable transparent proxying in linux programs -- note, IP_FREEBIND is supported, no idea if the FreeBSD IP_BINDANY is equivalent to the Linux IP_TRANSPARENT or not, any info is welcome",
494 case LINUX_IPV6_UNICAST_IF:
495 LINUX_RATELIMIT_MSG_OPT1(
496 "unsupported IPv6 socket option IPV6_UNICAST_IF (%d)",
499 case LINUX_IPV6_RECVFRAGSIZE:
500 LINUX_RATELIMIT_MSG_OPT1(
501 "unsupported IPv6 socket option IPV6_RECVFRAGSIZE (%d)",
505 /* unknown sockopts */
512 linux_to_bsd_so_sockopt(int opt)
518 case LINUX_SO_REUSEADDR:
519 return (SO_REUSEADDR);
524 case LINUX_SO_DONTROUTE:
525 return (SO_DONTROUTE);
526 case LINUX_SO_BROADCAST:
527 return (SO_BROADCAST);
528 case LINUX_SO_SNDBUF:
529 case LINUX_SO_SNDBUFFORCE:
531 case LINUX_SO_RCVBUF:
532 case LINUX_SO_RCVBUFFORCE:
534 case LINUX_SO_KEEPALIVE:
535 return (SO_KEEPALIVE);
536 case LINUX_SO_OOBINLINE:
537 return (SO_OOBINLINE);
538 case LINUX_SO_LINGER:
540 case LINUX_SO_REUSEPORT:
541 return (SO_REUSEPORT_LB);
542 case LINUX_SO_PASSCRED:
543 return (LOCAL_CREDS_PERSISTENT);
544 case LINUX_SO_PEERCRED:
545 return (LOCAL_PEERCRED);
546 case LINUX_SO_RCVLOWAT:
547 return (SO_RCVLOWAT);
548 case LINUX_SO_SNDLOWAT:
549 return (SO_SNDLOWAT);
550 case LINUX_SO_RCVTIMEO:
551 return (SO_RCVTIMEO);
552 case LINUX_SO_SNDTIMEO:
553 return (SO_SNDTIMEO);
554 case LINUX_SO_TIMESTAMPO:
555 case LINUX_SO_TIMESTAMPN:
556 return (SO_TIMESTAMP);
557 case LINUX_SO_TIMESTAMPNSO:
558 case LINUX_SO_TIMESTAMPNSN:
560 case LINUX_SO_ACCEPTCONN:
561 return (SO_ACCEPTCONN);
562 case LINUX_SO_PROTOCOL:
563 return (SO_PROTOCOL);
564 case LINUX_SO_DOMAIN:
571 linux_to_bsd_tcp_sockopt(int opt)
575 case LINUX_TCP_NODELAY:
576 return (TCP_NODELAY);
577 case LINUX_TCP_MAXSEG:
581 case LINUX_TCP_KEEPIDLE:
582 return (TCP_KEEPIDLE);
583 case LINUX_TCP_KEEPINTVL:
584 return (TCP_KEEPINTVL);
585 case LINUX_TCP_KEEPCNT:
586 return (TCP_KEEPCNT);
588 LINUX_RATELIMIT_MSG_OPT1(
589 "unsupported TCP socket option TCP_INFO (%d)", opt);
591 case LINUX_TCP_MD5SIG:
598 linux_to_bsd_msg_flags(int flags)
602 if (flags & LINUX_MSG_OOB)
603 ret_flags |= MSG_OOB;
604 if (flags & LINUX_MSG_PEEK)
605 ret_flags |= MSG_PEEK;
606 if (flags & LINUX_MSG_DONTROUTE)
607 ret_flags |= MSG_DONTROUTE;
608 if (flags & LINUX_MSG_CTRUNC)
609 ret_flags |= MSG_CTRUNC;
610 if (flags & LINUX_MSG_TRUNC)
611 ret_flags |= MSG_TRUNC;
612 if (flags & LINUX_MSG_DONTWAIT)
613 ret_flags |= MSG_DONTWAIT;
614 if (flags & LINUX_MSG_EOR)
615 ret_flags |= MSG_EOR;
616 if (flags & LINUX_MSG_WAITALL)
617 ret_flags |= MSG_WAITALL;
618 if (flags & LINUX_MSG_NOSIGNAL)
619 ret_flags |= MSG_NOSIGNAL;
620 if (flags & LINUX_MSG_PROXY)
621 LINUX_RATELIMIT_MSG_OPT1("socket message flag MSG_PROXY (%d) not handled",
623 if (flags & LINUX_MSG_FIN)
624 LINUX_RATELIMIT_MSG_OPT1("socket message flag MSG_FIN (%d) not handled",
626 if (flags & LINUX_MSG_SYN)
627 LINUX_RATELIMIT_MSG_OPT1("socket message flag MSG_SYN (%d) not handled",
629 if (flags & LINUX_MSG_CONFIRM)
630 LINUX_RATELIMIT_MSG_OPT1("socket message flag MSG_CONFIRM (%d) not handled",
632 if (flags & LINUX_MSG_RST)
633 LINUX_RATELIMIT_MSG_OPT1("socket message flag MSG_RST (%d) not handled",
635 if (flags & LINUX_MSG_ERRQUEUE)
636 LINUX_RATELIMIT_MSG_OPT1("socket message flag MSG_ERRQUEUE (%d) not handled",
642 linux_to_bsd_cmsg_type(int cmsg_type)
646 case LINUX_SCM_RIGHTS:
648 case LINUX_SCM_CREDENTIALS:
655 bsd_to_linux_ip_cmsg_type(int cmsg_type)
659 case IP_RECVORIGDSTADDR:
660 return (LINUX_IP_RECVORIGDSTADDR);
666 bsd_to_linux_cmsg_type(struct proc *p, int cmsg_type, int cmsg_level)
668 struct linux_pemuldata *pem;
670 if (cmsg_level == IPPROTO_IP)
671 return (bsd_to_linux_ip_cmsg_type(cmsg_type));
672 if (cmsg_level != SOL_SOCKET)
679 return (LINUX_SCM_RIGHTS);
681 return (LINUX_SCM_CREDENTIALS);
683 return (LINUX_SCM_CREDENTIALS);
685 return (pem->so_timestamp);
687 return (pem->so_timestampns);
693 linux_to_bsd_msghdr(struct msghdr *bhdr, const struct l_msghdr *lhdr)
695 if (lhdr->msg_controllen > INT_MAX)
698 bhdr->msg_name = PTRIN(lhdr->msg_name);
699 bhdr->msg_namelen = lhdr->msg_namelen;
700 bhdr->msg_iov = PTRIN(lhdr->msg_iov);
701 bhdr->msg_iovlen = lhdr->msg_iovlen;
702 bhdr->msg_control = PTRIN(lhdr->msg_control);
705 * msg_controllen is skipped since BSD and LINUX control messages
706 * are potentially different sizes (e.g. the cred structure used
707 * by SCM_CREDS is different between the two operating system).
709 * The caller can set it (if necessary) after converting all the
713 bhdr->msg_flags = linux_to_bsd_msg_flags(lhdr->msg_flags);
718 bsd_to_linux_msghdr(const struct msghdr *bhdr, struct l_msghdr *lhdr)
720 lhdr->msg_name = PTROUT(bhdr->msg_name);
721 lhdr->msg_namelen = bhdr->msg_namelen;
722 lhdr->msg_iov = PTROUT(bhdr->msg_iov);
723 lhdr->msg_iovlen = bhdr->msg_iovlen;
724 lhdr->msg_control = PTROUT(bhdr->msg_control);
727 * msg_controllen is skipped since BSD and LINUX control messages
728 * are potentially different sizes (e.g. the cred structure used
729 * by SCM_CREDS is different between the two operating system).
731 * The caller can set it (if necessary) after converting all the
735 /* msg_flags skipped */
740 linux_set_socket_flags(int lflags, int *flags)
743 if (lflags & ~(LINUX_SOCK_CLOEXEC | LINUX_SOCK_NONBLOCK))
745 if (lflags & LINUX_SOCK_NONBLOCK)
746 *flags |= SOCK_NONBLOCK;
747 if (lflags & LINUX_SOCK_CLOEXEC)
748 *flags |= SOCK_CLOEXEC;
753 linux_copyout_sockaddr(const struct sockaddr *sa, void *uaddr, size_t len)
755 struct l_sockaddr *lsa;
758 error = bsd_to_linux_sockaddr(sa, &lsa, len);
762 error = copyout(lsa, uaddr, len);
769 linux_sendit(struct thread *td, int s, struct msghdr *mp, int flags,
770 struct mbuf *control, enum uio_seg segflg)
775 if (mp->msg_name != NULL) {
776 len = mp->msg_namelen;
777 error = linux_to_bsd_sockaddr(mp->msg_name, &to, &len);
784 error = kern_sendit(td, s, mp, linux_to_bsd_msg_flags(flags), control,
792 /* Return 0 if IP_HDRINCL is set for the given socket. */
794 linux_check_hdrincl(struct thread *td, int s)
799 size_val = sizeof(optval);
800 error = kern_getsockopt(td, s, IPPROTO_IP, IP_HDRINCL,
801 &optval, UIO_SYSSPACE, &size_val);
805 return (optval == 0);
809 * Updated sendto() when IP_HDRINCL is set:
810 * tweak endian-dependent fields in the IP packet.
813 linux_sendto_hdrincl(struct thread *td, struct linux_sendto_args *linux_args)
816 * linux_ip_copysize defines how many bytes we should copy
817 * from the beginning of the IP packet before we customize it for BSD.
818 * It should include all the fields we modify (ip_len and ip_off).
820 #define linux_ip_copysize 8
824 struct iovec aiov[1];
827 /* Check that the packet isn't too big or too small. */
828 if (linux_args->len < linux_ip_copysize ||
829 linux_args->len > IP_MAXPACKET)
832 packet = (struct ip *)malloc(linux_args->len, M_LINUX, M_WAITOK);
834 /* Make kernel copy of the packet to be sent */
835 if ((error = copyin(PTRIN(linux_args->msg), packet,
839 /* Convert fields from Linux to BSD raw IP socket format */
840 packet->ip_len = linux_args->len;
841 packet->ip_off = ntohs(packet->ip_off);
843 /* Prepare the msghdr and iovec structures describing the new packet */
844 msg.msg_name = PTRIN(linux_args->to);
845 msg.msg_namelen = linux_args->tolen;
848 msg.msg_control = NULL;
850 aiov[0].iov_base = (char *)packet;
851 aiov[0].iov_len = linux_args->len;
852 error = linux_sendit(td, linux_args->s, &msg, linux_args->flags,
855 free(packet, M_LINUX);
859 static const char *linux_netlink_names[] = {
860 [LINUX_NETLINK_ROUTE] = "ROUTE",
861 [LINUX_NETLINK_SOCK_DIAG] = "SOCK_DIAG",
862 [LINUX_NETLINK_NFLOG] = "NFLOG",
863 [LINUX_NETLINK_SELINUX] = "SELINUX",
864 [LINUX_NETLINK_AUDIT] = "AUDIT",
865 [LINUX_NETLINK_FIB_LOOKUP] = "FIB_LOOKUP",
866 [LINUX_NETLINK_NETFILTER] = "NETFILTER",
867 [LINUX_NETLINK_KOBJECT_UEVENT] = "KOBJECT_UEVENT",
871 linux_socket(struct thread *td, struct linux_socket_args *args)
873 int retval_socket, type;
876 type = args->type & LINUX_SOCK_TYPE_MASK;
877 if (type < 0 || type > LINUX_SOCK_MAX)
879 retval_socket = linux_set_socket_flags(args->type & ~LINUX_SOCK_TYPE_MASK,
881 if (retval_socket != 0)
882 return (retval_socket);
883 domain = linux_to_bsd_domain(args->domain);
884 if (domain == AF_UNKNOWN) {
885 /* Mask off SOCK_NONBLOCK / CLOEXEC for error messages. */
886 type = args->type & LINUX_SOCK_TYPE_MASK;
887 if (args->domain == LINUX_AF_NETLINK &&
888 args->protocol == LINUX_NETLINK_AUDIT) {
889 ; /* Do nothing, quietly. */
890 } else if (args->domain == LINUX_AF_NETLINK) {
893 if (args->protocol >= 0 &&
894 args->protocol < nitems(linux_netlink_names))
895 nl_name = linux_netlink_names[args->protocol];
900 "unsupported socket(AF_NETLINK, %d, "
901 "NETLINK_%s)", type, nl_name);
904 "unsupported socket(AF_NETLINK, %d, %d)",
905 type, args->protocol);
907 linux_msg(curthread, "unsupported socket domain %d, "
908 "type %d, protocol %d", args->domain, type,
911 return (EAFNOSUPPORT);
914 retval_socket = kern_socket(td, domain, type, args->protocol);
916 return (retval_socket);
919 && (args->protocol == IPPROTO_RAW || args->protocol == 0)
920 && domain == PF_INET) {
921 /* It's a raw IP socket: set the IP_HDRINCL option. */
925 /* We ignore any error returned by kern_setsockopt() */
926 kern_setsockopt(td, td->td_retval[0], IPPROTO_IP, IP_HDRINCL,
927 &hdrincl, UIO_SYSSPACE, sizeof(hdrincl));
931 * Linux AF_INET6 socket has IPV6_V6ONLY setsockopt set to 0 by default
932 * and some apps depend on this. So, set V6ONLY to 0 for Linux apps.
933 * For simplicity we do this unconditionally of the net.inet6.ip6.v6only
936 if (domain == PF_INET6) {
940 /* We ignore any error returned by setsockopt() */
941 kern_setsockopt(td, td->td_retval[0], IPPROTO_IPV6, IPV6_V6ONLY,
942 &v6only, UIO_SYSSPACE, sizeof(v6only));
946 return (retval_socket);
950 linux_bind(struct thread *td, struct linux_bind_args *args)
955 error = linux_to_bsd_sockaddr(PTRIN(args->name), &sa,
960 error = kern_bindat(td, AT_FDCWD, args->s, sa);
964 if (error == EADDRNOTAVAIL && args->namelen != sizeof(struct sockaddr_in))
970 linux_connect(struct thread *td, struct linux_connect_args *args)
977 error = linux_to_bsd_sockaddr(PTRIN(args->name), &sa,
982 error = kern_connectat(td, AT_FDCWD, args->s, sa);
984 if (error != EISCONN)
988 * Linux doesn't return EISCONN the first time it occurs,
989 * when on a non-blocking socket. Instead it returns the
990 * error getsockopt(SOL_SOCKET, SO_ERROR) would return on BSD.
992 error = getsock(td, args->s, &cap_connect_rights, &fp);
998 if (atomic_load_int(&fp->f_flag) & FNONBLOCK) {
1000 if (so->so_emuldata == 0)
1001 error = so->so_error;
1002 so->so_emuldata = (void *)1;
1011 linux_listen(struct thread *td, struct linux_listen_args *args)
1014 return (kern_listen(td, args->s, args->backlog));
1018 linux_accept_common(struct thread *td, int s, l_uintptr_t addr,
1019 l_uintptr_t namelen, int flags)
1021 struct sockaddr_storage ss = { .ss_len = sizeof(ss) };
1022 struct file *fp, *fp1;
1025 int bflags, error, error1;
1030 error = linux_set_socket_flags(flags, &bflags);
1034 if (PTRIN(addr) != NULL) {
1035 error = copyin(PTRIN(namelen), &len, sizeof(len));
1043 error = kern_accept4(td, s, (struct sockaddr *)&ss, bflags, &fp);
1046 * Translate errno values into ones used by Linux.
1050 * XXX. This is wrong, different sockaddr structures
1051 * have different sizes.
1055 if (namelen != sizeof(struct sockaddr_in))
1059 error1 = getsock(td, s, &cap_accept_rights, &fp1);
1065 if (so->so_type == SOCK_DGRAM)
1073 if (PTRIN(addr) != NULL) {
1074 len = min(ss.ss_len, len);
1075 error = linux_copyout_sockaddr((struct sockaddr *)&ss,
1079 error = copyout(&len, PTRIN(namelen), sizeof(len));
1082 fdclose(td, fp, td->td_retval[0]);
1083 td->td_retval[0] = 0;
1092 linux_accept(struct thread *td, struct linux_accept_args *args)
1095 return (linux_accept_common(td, args->s, args->addr,
1100 linux_accept4(struct thread *td, struct linux_accept4_args *args)
1103 return (linux_accept_common(td, args->s, args->addr,
1104 args->namelen, args->flags));
1108 linux_getsockname(struct thread *td, struct linux_getsockname_args *args)
1110 struct sockaddr_storage ss = { .ss_len = sizeof(ss) };
1114 error = copyin(PTRIN(args->namelen), &len, sizeof(len));
1118 error = kern_getsockname(td, args->s, (struct sockaddr *)&ss);
1122 len = min(ss.ss_len, len);
1123 error = linux_copyout_sockaddr((struct sockaddr *)&ss,
1124 PTRIN(args->addr), len);
1127 error = copyout(&len, PTRIN(args->namelen), sizeof(len));
1133 linux_getpeername(struct thread *td, struct linux_getpeername_args *args)
1135 struct sockaddr_storage ss = { .ss_len = sizeof(ss) };
1139 error = copyin(PTRIN(args->namelen), &len, sizeof(len));
1143 error = kern_getpeername(td, args->s, (struct sockaddr *)&ss);
1147 len = min(ss.ss_len, len);
1148 error = linux_copyout_sockaddr((struct sockaddr *)&ss,
1149 PTRIN(args->addr), len);
1152 error = copyout(&len, PTRIN(args->namelen), sizeof(len));
1158 linux_socketpair(struct thread *td, struct linux_socketpair_args *args)
1160 int domain, error, sv[2], type;
1162 domain = linux_to_bsd_domain(args->domain);
1163 if (domain != PF_LOCAL)
1164 return (EAFNOSUPPORT);
1165 type = args->type & LINUX_SOCK_TYPE_MASK;
1166 if (type < 0 || type > LINUX_SOCK_MAX)
1168 error = linux_set_socket_flags(args->type & ~LINUX_SOCK_TYPE_MASK,
1172 if (args->protocol != 0 && args->protocol != PF_UNIX) {
1174 * Use of PF_UNIX as protocol argument is not right,
1175 * but Linux does it.
1176 * Do not map PF_UNIX as its Linux value is identical
1179 return (EPROTONOSUPPORT);
1181 error = kern_socketpair(td, domain, type, 0, sv);
1184 error = copyout(sv, PTRIN(args->rsv), 2 * sizeof(int));
1186 (void)kern_close(td, sv[0]);
1187 (void)kern_close(td, sv[1]);
1192 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1193 struct linux_send_args {
1201 linux_send(struct thread *td, struct linux_send_args *args)
1203 struct sendto_args /* {
1214 bsd_args.s = args->s;
1215 bsd_args.buf = (caddr_t)PTRIN(args->msg);
1216 bsd_args.len = args->len;
1217 bsd_args.flags = linux_to_bsd_msg_flags(args->flags);
1220 error = sys_sendto(td, &bsd_args);
1221 if (error == ENOTCONN) {
1223 * Linux doesn't return ENOTCONN for non-blocking sockets.
1224 * Instead it returns the EAGAIN.
1226 error = getsock(td, args->s, &cap_send_rights, &fp);
1228 if (atomic_load_int(&fp->f_flag) & FNONBLOCK)
1236 struct linux_recv_args {
1244 linux_recv(struct thread *td, struct linux_recv_args *args)
1246 struct recvfrom_args /* {
1251 struct sockaddr *from;
1252 socklen_t fromlenaddr;
1255 bsd_args.s = args->s;
1256 bsd_args.buf = (caddr_t)PTRIN(args->msg);
1257 bsd_args.len = args->len;
1258 bsd_args.flags = linux_to_bsd_msg_flags(args->flags);
1259 bsd_args.from = NULL;
1260 bsd_args.fromlenaddr = 0;
1261 return (sys_recvfrom(td, &bsd_args));
1263 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1266 linux_sendto(struct thread *td, struct linux_sendto_args *args)
1274 if (linux_check_hdrincl(td, args->s) == 0)
1275 /* IP_HDRINCL set, tweak the packet before sending */
1276 return (linux_sendto_hdrincl(td, args));
1278 bzero(&msg, sizeof(msg));
1279 error = getsock(td, args->s, &cap_send_connect_rights, &fp);
1283 if ((so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING)) == 0) {
1284 msg.msg_name = PTRIN(args->to);
1285 msg.msg_namelen = args->tolen;
1287 msg.msg_iov = &aiov;
1289 aiov.iov_base = PTRIN(args->msg);
1290 aiov.iov_len = args->len;
1292 return (linux_sendit(td, args->s, &msg, args->flags, NULL,
1297 linux_recvfrom(struct thread *td, struct linux_recvfrom_args *args)
1299 struct sockaddr *sa;
1304 if (PTRIN(args->fromlen) != NULL) {
1305 error = copyin(PTRIN(args->fromlen), &fromlen,
1311 fromlen = min(fromlen, SOCK_MAXADDRLEN);
1312 sa = malloc(fromlen, M_SONAME, M_WAITOK);
1319 msg.msg_namelen = fromlen;
1320 msg.msg_iov = &aiov;
1322 aiov.iov_base = PTRIN(args->buf);
1323 aiov.iov_len = args->len;
1324 msg.msg_control = 0;
1325 msg.msg_flags = linux_to_bsd_msg_flags(args->flags);
1327 error = kern_recvit(td, args->s, &msg, UIO_SYSSPACE, NULL);
1332 * XXX. Seems that FreeBSD is different from Linux here. Linux
1333 * fill source address if underlying protocol provides it, while
1334 * FreeBSD fill it if underlying protocol is not connection-oriented.
1335 * So, kern_recvit() set msg.msg_namelen to 0 if protocol pr_flags
1336 * does not contains PR_ADDR flag.
1338 if (PTRIN(args->from) != NULL && msg.msg_namelen != 0)
1339 error = linux_copyout_sockaddr(sa, PTRIN(args->from),
1342 if (error == 0 && PTRIN(args->fromlen) != NULL)
1343 error = copyout(&msg.msg_namelen, PTRIN(args->fromlen),
1344 sizeof(msg.msg_namelen));
1351 linux_sendmsg_common(struct thread *td, l_int s, struct l_msghdr *msghdr,
1354 struct sockaddr_storage ss = { .ss_len = sizeof(ss) };
1355 struct cmsghdr *cmsg;
1356 struct mbuf *control;
1358 struct l_cmsghdr linux_cmsg;
1359 struct l_cmsghdr *ptr_cmsg;
1360 struct l_msghdr linux_msghdr;
1364 sa_family_t sa_family;
1371 error = copyin(msghdr, &linux_msghdr, sizeof(linux_msghdr));
1376 * Some Linux applications (ping) define a non-NULL control data
1377 * pointer, but a msg_controllen of 0, which is not allowed in the
1378 * FreeBSD system call interface. NULL the msg_control pointer in
1379 * order to handle this case. This should be checked, but allows the
1380 * Linux ping to work.
1382 if (PTRIN(linux_msghdr.msg_control) != NULL &&
1383 linux_msghdr.msg_controllen == 0)
1384 linux_msghdr.msg_control = PTROUT(NULL);
1386 error = linux_to_bsd_msghdr(&msg, &linux_msghdr);
1390 #ifdef COMPAT_LINUX32
1391 error = freebsd32_copyiniov(PTRIN(msg.msg_iov), msg.msg_iovlen,
1394 error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE);
1401 error = kern_getsockname(td, s, (struct sockaddr *)&ss);
1404 sa_family = ss.ss_family;
1406 if (flags & LINUX_MSG_OOB) {
1408 if (sa_family == AF_UNIX)
1411 error = getsock(td, s, &cap_send_rights, &fp);
1415 if (so->so_type != SOCK_STREAM)
1422 if (linux_msghdr.msg_controllen >= sizeof(struct l_cmsghdr)) {
1424 control = m_get(M_WAITOK, MT_CONTROL);
1425 MCLGET(control, M_WAITOK);
1426 data = mtod(control, void *);
1429 ptr_cmsg = PTRIN(linux_msghdr.msg_control);
1430 clen = linux_msghdr.msg_controllen;
1432 error = copyin(ptr_cmsg, &linux_cmsg,
1433 sizeof(struct l_cmsghdr));
1438 if (linux_cmsg.cmsg_len < sizeof(struct l_cmsghdr) ||
1439 linux_cmsg.cmsg_len > clen)
1442 if (datalen + CMSG_HDRSZ > MCLBYTES)
1446 * Now we support only SCM_RIGHTS and SCM_CRED,
1447 * so return EINVAL in any other cmsg_type
1451 linux_to_bsd_cmsg_type(linux_cmsg.cmsg_type);
1453 linux_to_bsd_sockopt_level(linux_cmsg.cmsg_level);
1454 if (cmsg->cmsg_type == -1
1455 || cmsg->cmsg_level != SOL_SOCKET) {
1456 linux_msg(curthread,
1457 "unsupported sendmsg cmsg level %d type %d",
1458 linux_cmsg.cmsg_level, linux_cmsg.cmsg_type);
1463 * Some applications (e.g. pulseaudio) attempt to
1464 * send ancillary data even if the underlying protocol
1465 * doesn't support it which is not allowed in the
1466 * FreeBSD system call interface.
1468 if (sa_family != AF_UNIX)
1471 if (cmsg->cmsg_type == SCM_CREDS) {
1472 len = sizeof(struct cmsgcred);
1473 if (datalen + CMSG_SPACE(len) > MCLBYTES)
1477 * The lower levels will fill in the structure
1479 memset(CMSG_DATA(data), 0, len);
1481 len = linux_cmsg.cmsg_len - L_CMSG_HDRSZ;
1482 if (datalen + CMSG_SPACE(len) < datalen ||
1483 datalen + CMSG_SPACE(len) > MCLBYTES)
1486 error = copyin(LINUX_CMSG_DATA(ptr_cmsg),
1487 CMSG_DATA(data), len);
1492 cmsg->cmsg_len = CMSG_LEN(len);
1493 data = (char *)data + CMSG_SPACE(len);
1494 datalen += CMSG_SPACE(len);
1497 if (clen <= LINUX_CMSG_ALIGN(linux_cmsg.cmsg_len))
1500 clen -= LINUX_CMSG_ALIGN(linux_cmsg.cmsg_len);
1501 ptr_cmsg = (struct l_cmsghdr *)((char *)ptr_cmsg +
1502 LINUX_CMSG_ALIGN(linux_cmsg.cmsg_len));
1503 } while(clen >= sizeof(struct l_cmsghdr));
1505 control->m_len = datalen;
1514 error = linux_sendit(td, s, &msg, flags, control, UIO_USERSPACE);
1524 linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args)
1527 return (linux_sendmsg_common(td, args->s, PTRIN(args->msg),
1532 linux_sendmmsg(struct thread *td, struct linux_sendmmsg_args *args)
1534 struct l_mmsghdr *msg;
1536 int error, datagrams;
1538 if (args->vlen > UIO_MAXIOV)
1539 args->vlen = UIO_MAXIOV;
1541 msg = PTRIN(args->msg);
1543 while (datagrams < args->vlen) {
1544 error = linux_sendmsg_common(td, args->s, &msg->msg_hdr,
1549 retval = td->td_retval[0];
1550 error = copyout(&retval, &msg->msg_len, sizeof(msg->msg_len));
1557 td->td_retval[0] = datagrams;
1562 recvmsg_scm_rights(struct thread *td, l_uint flags, socklen_t *datalen,
1563 void **data, void **udata)
1565 int i, fd, fds, *fdp;
1567 if (flags & LINUX_MSG_CMSG_CLOEXEC) {
1568 fds = *datalen / sizeof(int);
1570 for (i = 0; i < fds; i++) {
1572 (void)kern_fcntl(td, fd, F_SETFD, FD_CLOEXEC);
1580 recvmsg_scm_creds(socklen_t *datalen, void **data, void **udata)
1582 struct cmsgcred *cmcred;
1586 lu.pid = cmcred->cmcred_pid;
1587 lu.uid = cmcred->cmcred_uid;
1588 lu.gid = cmcred->cmcred_gid;
1589 memmove(*data, &lu, sizeof(lu));
1590 *datalen = sizeof(lu);
1593 _Static_assert(sizeof(struct cmsgcred) >= sizeof(struct l_ucred),
1594 "scm_creds sizeof l_ucred");
1597 recvmsg_scm_creds2(socklen_t *datalen, void **data, void **udata)
1599 struct sockcred2 *scred;
1603 lu.pid = scred->sc_pid;
1604 lu.uid = scred->sc_uid;
1605 lu.gid = scred->sc_gid;
1606 memmove(*data, &lu, sizeof(lu));
1607 *datalen = sizeof(lu);
1610 _Static_assert(sizeof(struct sockcred2) >= sizeof(struct l_ucred),
1611 "scm_creds2 sizeof l_ucred");
1613 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1615 recvmsg_scm_timestamp(l_int msg_type, socklen_t *datalen, void **data,
1618 l_sock_timeval ltv64;
1624 if (*datalen != sizeof(struct timeval))
1628 #if defined(COMPAT_LINUX32)
1629 if (msg_type == LINUX_SCM_TIMESTAMPO &&
1630 (tv->tv_sec > INT_MAX || tv->tv_sec < INT_MIN))
1633 if (msg_type == LINUX_SCM_TIMESTAMPN)
1634 len = sizeof(ltv64);
1638 buf = malloc(len, M_LINUX, M_WAITOK);
1639 if (msg_type == LINUX_SCM_TIMESTAMPN) {
1640 ltv64.tv_sec = tv->tv_sec;
1641 ltv64.tv_usec = tv->tv_usec;
1642 memmove(buf, <v64, len);
1644 ltv.tv_sec = tv->tv_sec;
1645 ltv.tv_usec = tv->tv_usec;
1646 memmove(buf, <v, len);
1648 *data = *udata = buf;
1653 _Static_assert(sizeof(struct timeval) == sizeof(l_timeval),
1654 "scm_timestamp sizeof l_timeval");
1655 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1657 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1659 recvmsg_scm_timestampns(l_int msg_type, socklen_t *datalen, void **data,
1662 struct l_timespec64 ts64;
1663 struct l_timespec ts32;
1668 if (msg_type == LINUX_SCM_TIMESTAMPNSO)
1673 buf = malloc(len, M_LINUX, M_WAITOK);
1674 bintime2timespec(*data, &ts);
1675 if (msg_type == LINUX_SCM_TIMESTAMPNSO) {
1676 ts32.tv_sec = ts.tv_sec;
1677 ts32.tv_nsec = ts.tv_nsec;
1678 memmove(buf, &ts32, len);
1680 ts64.tv_sec = ts.tv_sec;
1681 ts64.tv_nsec = ts.tv_nsec;
1682 memmove(buf, &ts64, len);
1684 *data = *udata = buf;
1690 recvmsg_scm_timestampns(l_int msg_type, socklen_t *datalen, void **data,
1695 bintime2timespec(*data, &ts);
1696 memmove(*data, &ts, sizeof(struct timespec));
1697 *datalen = sizeof(struct timespec);
1700 _Static_assert(sizeof(struct bintime) >= sizeof(struct timespec),
1701 "scm_timestampns sizeof timespec");
1702 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1705 recvmsg_scm_sol_socket(struct thread *td, l_int msg_type, l_int lmsg_type,
1706 l_uint flags, socklen_t *datalen, void **data, void **udata)
1713 error = recvmsg_scm_rights(td, flags, datalen,
1717 error = recvmsg_scm_creds(datalen, data, udata);
1720 error = recvmsg_scm_creds2(datalen, data, udata);
1723 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1724 error = recvmsg_scm_timestamp(lmsg_type, datalen,
1729 error = recvmsg_scm_timestampns(lmsg_type, datalen,
1738 recvmsg_scm_ip_origdstaddr(socklen_t *datalen, void **data, void **udata)
1740 struct l_sockaddr *lsa;
1743 error = bsd_to_linux_sockaddr(*data, &lsa, *datalen);
1745 *data = *udata = lsa;
1746 *datalen = sizeof(*lsa);
1752 recvmsg_scm_ipproto_ip(l_int msg_type, l_int lmsg_type, socklen_t *datalen,
1753 void **data, void **udata)
1759 case IP_ORIGDSTADDR:
1760 error = recvmsg_scm_ip_origdstaddr(datalen, data,
1769 linux_recvmsg_common(struct thread *td, l_int s, struct l_msghdr *msghdr,
1770 l_uint flags, struct msghdr *msg)
1772 struct proc *p = td->td_proc;
1774 struct l_cmsghdr *lcm = NULL;
1775 socklen_t datalen, maxlen, outlen;
1776 struct l_msghdr l_msghdr;
1777 struct iovec *iov, *uiov;
1778 struct mbuf *m, *control = NULL;
1779 struct mbuf **controlp;
1780 struct sockaddr *sa;
1785 error = copyin(msghdr, &l_msghdr, sizeof(l_msghdr));
1790 * Pass user-supplied recvmsg() flags in msg_flags field,
1791 * following sys_recvmsg() convention.
1793 l_msghdr.msg_flags = flags;
1795 error = linux_to_bsd_msghdr(msg, &l_msghdr);
1799 #ifdef COMPAT_LINUX32
1800 error = freebsd32_copyiniov(PTRIN(msg->msg_iov), msg->msg_iovlen,
1803 error = copyiniov(msg->msg_iov, msg->msg_iovlen, &iov, EMSGSIZE);
1808 if (msg->msg_name != NULL && msg->msg_namelen > 0) {
1809 msg->msg_namelen = min(msg->msg_namelen, SOCK_MAXADDRLEN);
1810 sa = malloc(msg->msg_namelen, M_SONAME, M_WAITOK);
1814 msg->msg_name = NULL;
1817 uiov = msg->msg_iov;
1819 controlp = (msg->msg_control != NULL) ? &control : NULL;
1820 error = kern_recvit(td, s, msg, UIO_SYSSPACE, controlp);
1821 msg->msg_iov = uiov;
1826 * Note that kern_recvit() updates msg->msg_namelen.
1828 if (msg->msg_name != NULL && msg->msg_namelen > 0) {
1829 msg->msg_name = PTRIN(l_msghdr.msg_name);
1830 error = linux_copyout_sockaddr(sa, msg->msg_name,
1836 error = bsd_to_linux_msghdr(msg, &l_msghdr);
1840 skiped = outlen = 0;
1841 maxlen = l_msghdr.msg_controllen;
1842 if (control == NULL)
1845 lcm = malloc(L_CMSG_HDRSZ, M_LINUX, M_WAITOK | M_ZERO);
1846 msg->msg_control = mtod(control, struct cmsghdr *);
1847 msg->msg_controllen = control->m_len;
1848 outbuf = PTRIN(l_msghdr.msg_control);
1849 for (m = control; m != NULL; m = m->m_next) {
1850 cm = mtod(m, struct cmsghdr *);
1851 lcm->cmsg_type = bsd_to_linux_cmsg_type(p, cm->cmsg_type,
1853 lcm->cmsg_level = bsd_to_linux_sockopt_level(cm->cmsg_level);
1855 if (lcm->cmsg_type == -1 ||
1856 cm->cmsg_level == -1) {
1857 LINUX_RATELIMIT_MSG_OPT2(
1858 "unsupported recvmsg cmsg level %d type %d",
1859 cm->cmsg_level, cm->cmsg_type);
1860 /* Skip unsupported messages */
1864 data = CMSG_DATA(cm);
1865 datalen = (caddr_t)cm + cm->cmsg_len - (caddr_t)data;
1869 switch (cm->cmsg_level) {
1871 error = recvmsg_scm_ipproto_ip(cm->cmsg_type,
1872 lcm->cmsg_type, &datalen, &data, &udata);
1875 error = recvmsg_scm_sol_socket(td, cm->cmsg_type,
1876 lcm->cmsg_type, flags, &datalen, &data, &udata);
1880 /* The recvmsg_scm_ is responsible to free udata on error. */
1884 if (outlen + LINUX_CMSG_LEN(datalen) > maxlen) {
1889 l_msghdr.msg_flags |= LINUX_MSG_CTRUNC;
1890 m_dispose_extcontrolm(control);
1891 free(udata, M_LINUX);
1896 lcm->cmsg_len = LINUX_CMSG_LEN(datalen);
1897 error = copyout(lcm, outbuf, L_CMSG_HDRSZ);
1899 error = copyout(data, LINUX_CMSG_DATA(outbuf), datalen);
1901 outbuf += LINUX_CMSG_SPACE(datalen);
1902 outlen += LINUX_CMSG_SPACE(datalen);
1906 free(udata, M_LINUX);
1910 if (outlen == 0 && skiped > 0) {
1916 l_msghdr.msg_controllen = outlen;
1917 error = copyout(&l_msghdr, msghdr, sizeof(l_msghdr));
1920 if (control != NULL) {
1922 m_dispose_extcontrolm(control);
1933 linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args)
1935 struct msghdr bsd_msg;
1939 error = getsock(td, args->s, &cap_recv_rights, &fp);
1943 return (linux_recvmsg_common(td, args->s, PTRIN(args->msg),
1944 args->flags, &bsd_msg));
1948 linux_recvmmsg_common(struct thread *td, l_int s, struct l_mmsghdr *msg,
1949 l_uint vlen, l_uint flags, struct timespec *tts)
1951 struct msghdr bsd_msg;
1955 int error, datagrams;
1957 error = getsock(td, s, &cap_recv_rights, &fp);
1961 while (datagrams < vlen) {
1962 error = linux_recvmsg_common(td, s, &msg->msg_hdr,
1963 flags & ~LINUX_MSG_WAITFORONE, &bsd_msg);
1967 retval = td->td_retval[0];
1968 error = copyout(&retval, &msg->msg_len, sizeof(msg->msg_len));
1975 * MSG_WAITFORONE turns on MSG_DONTWAIT after one packet.
1977 if (flags & LINUX_MSG_WAITFORONE)
1978 flags |= LINUX_MSG_DONTWAIT;
1981 * See BUGS section of recvmmsg(2).
1985 timespecsub(&ts, tts, &ts);
1986 if (!timespecisset(&ts) || ts.tv_sec > 0)
1989 /* Out of band data, return right away. */
1990 if (bsd_msg.msg_flags & MSG_OOB)
1994 td->td_retval[0] = datagrams;
2000 linux_recvmmsg(struct thread *td, struct linux_recvmmsg_args *args)
2002 struct timespec ts, tts, *ptts;
2005 if (args->timeout) {
2006 error = linux_get_timespec(&ts, args->timeout);
2010 timespecadd(&tts, &ts, &tts);
2015 return (linux_recvmmsg_common(td, args->s, PTRIN(args->msg),
2016 args->vlen, args->flags, ptts));
2019 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
2021 linux_recvmmsg_time64(struct thread *td, struct linux_recvmmsg_time64_args *args)
2023 struct timespec ts, tts, *ptts;
2026 if (args->timeout) {
2027 error = linux_get_timespec64(&ts, args->timeout);
2031 timespecadd(&tts, &ts, &tts);
2036 return (linux_recvmmsg_common(td, args->s, PTRIN(args->msg),
2037 args->vlen, args->flags, ptts));
2042 linux_shutdown(struct thread *td, struct linux_shutdown_args *args)
2045 return (kern_shutdown(td, args->s, args->how));
2049 linux_setsockopt(struct thread *td, struct linux_setsockopt_args *args)
2051 struct proc *p = td->td_proc;
2052 struct linux_pemuldata *pem;
2054 struct sockaddr *sa;
2057 int error, level, name, val;
2059 level = linux_to_bsd_sockopt_level(args->level);
2062 name = linux_to_bsd_so_sockopt(args->optname);
2064 case LOCAL_CREDS_PERSISTENT:
2070 error = copyin(PTRIN(args->optval), &linux_tv,
2074 tv.tv_sec = linux_tv.tv_sec;
2075 tv.tv_usec = linux_tv.tv_usec;
2076 return (kern_setsockopt(td, args->s, level,
2077 name, &tv, UIO_SYSSPACE, sizeof(tv)));
2080 /* overwrite SO_BINTIME */
2082 error = kern_setsockopt(td, args->s, level,
2083 SO_BINTIME, &val, UIO_SYSSPACE, sizeof(val));
2087 pem->so_timestamp = args->optname;
2090 /* overwrite SO_TIMESTAMP */
2092 error = kern_setsockopt(td, args->s, level,
2093 SO_TIMESTAMP, &val, UIO_SYSSPACE, sizeof(val));
2097 pem->so_timestampns = args->optname;
2104 if (args->optname == LINUX_IP_RECVERR &&
2105 linux_ignore_ip_recverr) {
2107 * XXX: This is a hack to unbreak DNS resolution
2108 * with glibc 2.30 and above.
2112 name = linux_to_bsd_ip_sockopt(args->optname);
2115 name = linux_to_bsd_ip6_sockopt(args->optname);
2118 name = linux_to_bsd_tcp_sockopt(args->optname);
2121 name = args->optname;
2129 linux_msg(curthread,
2130 "unsupported setsockopt level %d optname %d",
2131 args->level, args->optname);
2132 return (ENOPROTOOPT);
2135 if (name == IPV6_NEXTHOP) {
2137 error = linux_to_bsd_sockaddr(PTRIN(args->optval), &sa, &len);
2141 error = kern_setsockopt(td, args->s, level,
2142 name, sa, UIO_SYSSPACE, len);
2145 error = kern_setsockopt(td, args->s, level,
2146 name, PTRIN(args->optval), UIO_USERSPACE, args->optlen);
2153 linux_sockopt_copyout(struct thread *td, void *val, socklen_t len,
2154 struct linux_getsockopt_args *args)
2158 error = copyout(val, PTRIN(args->optval), len);
2160 error = copyout(&len, PTRIN(args->optlen), sizeof(len));
2165 linux_getsockopt_so_peergroups(struct thread *td,
2166 struct linux_getsockopt_args *args)
2169 socklen_t xulen, len;
2173 error = kern_getsockopt(td, args->s, 0,
2174 LOCAL_PEERCRED, &xu, UIO_SYSSPACE, &xulen);
2178 len = xu.cr_ngroups * sizeof(l_gid_t);
2179 if (args->optlen < len) {
2180 error = copyout(&len, PTRIN(args->optlen), sizeof(len));
2187 * "- 1" to skip the primary group.
2189 for (i = 0; i < xu.cr_ngroups - 1; i++) {
2190 error = copyout(xu.cr_groups + i + 1,
2191 (void *)(args->optval + i * sizeof(l_gid_t)),
2197 error = copyout(&len, PTRIN(args->optlen), sizeof(len));
2202 linux_getsockopt_so_peersec(struct thread *td,
2203 struct linux_getsockopt_args *args)
2208 len = sizeof(SECURITY_CONTEXT_STRING);
2209 if (args->optlen < len) {
2210 error = copyout(&len, PTRIN(args->optlen), sizeof(len));
2216 return (linux_sockopt_copyout(td, SECURITY_CONTEXT_STRING,
2221 linux_getsockopt_so_linger(struct thread *td,
2222 struct linux_getsockopt_args *args)
2229 error = kern_getsockopt(td, args->s, SOL_SOCKET,
2230 SO_LINGER, &ling, UIO_SYSSPACE, &len);
2233 ling.l_onoff = ((ling.l_onoff & SO_LINGER) != 0);
2234 return (linux_sockopt_copyout(td, &ling, len, args));
2238 linux_getsockopt(struct thread *td, struct linux_getsockopt_args *args)
2242 socklen_t tv_len, xulen, len;
2243 struct sockaddr *sa;
2246 int error, level, name, newval;
2248 level = linux_to_bsd_sockopt_level(args->level);
2251 switch (args->optname) {
2252 case LINUX_SO_PEERGROUPS:
2253 return (linux_getsockopt_so_peergroups(td, args));
2254 case LINUX_SO_PEERSEC:
2255 return (linux_getsockopt_so_peersec(td, args));
2260 name = linux_to_bsd_so_sockopt(args->optname);
2262 case LOCAL_CREDS_PERSISTENT:
2268 tv_len = sizeof(tv);
2269 error = kern_getsockopt(td, args->s, level,
2270 name, &tv, UIO_SYSSPACE, &tv_len);
2273 linux_tv.tv_sec = tv.tv_sec;
2274 linux_tv.tv_usec = tv.tv_usec;
2275 return (linux_sockopt_copyout(td, &linux_tv,
2276 sizeof(linux_tv), args));
2278 case LOCAL_PEERCRED:
2279 if (args->optlen < sizeof(lxu))
2282 * LOCAL_PEERCRED is not served at the SOL_SOCKET level,
2283 * but by the Unix socket's level 0.
2287 error = kern_getsockopt(td, args->s, level,
2288 name, &xu, UIO_SYSSPACE, &xulen);
2291 lxu.pid = xu.cr_pid;
2292 lxu.uid = xu.cr_uid;
2293 lxu.gid = xu.cr_gid;
2294 return (linux_sockopt_copyout(td, &lxu,
2295 sizeof(lxu), args));
2298 len = sizeof(newval);
2299 error = kern_getsockopt(td, args->s, level,
2300 name, &newval, UIO_SYSSPACE, &len);
2303 newval = -bsd_to_linux_errno(newval);
2304 return (linux_sockopt_copyout(td, &newval,
2308 len = sizeof(newval);
2309 error = kern_getsockopt(td, args->s, level,
2310 name, &newval, UIO_SYSSPACE, &len);
2313 newval = bsd_to_linux_domain((sa_family_t)newval);
2314 if (newval == AF_UNKNOWN)
2315 return (ENOPROTOOPT);
2316 return (linux_sockopt_copyout(td, &newval,
2320 return (linux_getsockopt_so_linger(td, args));
2327 name = linux_to_bsd_ip_sockopt(args->optname);
2330 name = linux_to_bsd_ip6_sockopt(args->optname);
2333 name = linux_to_bsd_tcp_sockopt(args->optname);
2341 linux_msg(curthread,
2342 "unsupported getsockopt level %d optname %d",
2343 args->level, args->optname);
2347 if (name == IPV6_NEXTHOP) {
2348 error = copyin(PTRIN(args->optlen), &len, sizeof(len));
2351 sa = malloc(len, M_SONAME, M_WAITOK);
2353 error = kern_getsockopt(td, args->s, level,
2354 name, sa, UIO_SYSSPACE, &len);
2358 error = linux_copyout_sockaddr(sa, PTRIN(args->optval), len);
2360 error = copyout(&len, PTRIN(args->optlen),
2366 error = copyin(PTRIN(args->optlen), &len, sizeof(len));
2370 error = kern_getsockopt(td, args->s, level,
2371 name, PTRIN(args->optval), UIO_USERSPACE, &len);
2373 error = copyout(&len, PTRIN(args->optlen),
2381 * Based on sendfile_getsock from kern_sendfile.c
2382 * Determines whether an fd is a stream socket that can be used
2383 * with FreeBSD sendfile.
2386 is_sendfile(struct file *fp, struct file *ofp)
2391 * FreeBSD sendfile() system call sends a regular file or
2392 * shared memory object out a stream socket.
2394 if ((fp->f_type != DTYPE_SHM && fp->f_type != DTYPE_VNODE) ||
2395 (fp->f_type == DTYPE_VNODE &&
2396 (fp->f_vnode == NULL || fp->f_vnode->v_type != VREG)))
2399 * The socket must be a stream socket and connected.
2401 if (ofp->f_type != DTYPE_SOCKET)
2404 if (so->so_type != SOCK_STREAM)
2407 * SCTP one-to-one style sockets currently don't work with
2410 if (so->so_proto->pr_protocol == IPPROTO_SCTP)
2412 return (!SOLISTENING(so));
2416 is_regular_file(struct file *fp)
2419 return (fp->f_type == DTYPE_VNODE && fp->f_vnode != NULL &&
2420 fp->f_vnode->v_type == VREG);
2424 sendfile_fallback(struct thread *td, struct file *fp, l_int out,
2425 off_t *offset, l_size_t count, off_t *sbytes)
2427 off_t current_offset, out_offset, to_send;
2428 l_size_t bytes_sent, n_read;
2437 if (offset == NULL) {
2438 if ((error = fo_seek(fp, 0, SEEK_CUR, td)) != 0)
2440 current_offset = td->td_uretoff.tdu_off;
2442 if ((fp->f_ops->fo_flags & DFLAG_SEEKABLE) == 0)
2444 current_offset = *offset;
2446 error = fget_write(td, out, &cap_pwrite_rights, &ofp);
2449 seekable = (ofp->f_ops->fo_flags & DFLAG_SEEKABLE) != 0;
2451 if ((error = fo_seek(ofp, 0, SEEK_CUR, td)) != 0)
2453 out_offset = td->td_uretoff.tdu_off;
2457 flags = FOF_OFFSET | FOF_NOUPDATE;
2458 bufsz = min(count, MAXPHYS);
2459 buf = malloc(bufsz, M_LINUX, M_WAITOK);
2461 while (bytes_sent < count) {
2462 to_send = min(count - bytes_sent, bufsz);
2463 aiov.iov_base = buf;
2464 aiov.iov_len = bufsz;
2465 auio.uio_iov = &aiov;
2466 auio.uio_iovcnt = 1;
2467 auio.uio_segflg = UIO_SYSSPACE;
2469 auio.uio_rw = UIO_READ;
2470 auio.uio_offset = current_offset;
2471 auio.uio_resid = to_send;
2472 error = fo_read(fp, &auio, fp->f_cred, flags, td);
2475 n_read = to_send - auio.uio_resid;
2478 aiov.iov_base = buf;
2479 aiov.iov_len = bufsz;
2480 auio.uio_iov = &aiov;
2481 auio.uio_iovcnt = 1;
2482 auio.uio_segflg = UIO_SYSSPACE;
2484 auio.uio_rw = UIO_WRITE;
2485 auio.uio_offset = (seekable) ? out_offset : 0;
2486 auio.uio_resid = n_read;
2487 error = fo_write(ofp, &auio, ofp->f_cred, flags, td);
2490 bytes_sent += n_read;
2491 current_offset += n_read;
2492 out_offset += n_read;
2497 *sbytes = bytes_sent;
2499 *offset = current_offset;
2501 error = fo_seek(fp, current_offset, SEEK_SET, td);
2503 if (error == 0 && seekable)
2504 error = fo_seek(ofp, out_offset, SEEK_SET, td);
2512 sendfile_sendfile(struct thread *td, struct file *fp, l_int out,
2513 off_t *offset, l_size_t count, off_t *sbytes)
2515 off_t current_offset;
2518 if (offset == NULL) {
2519 if ((fp->f_ops->fo_flags & DFLAG_SEEKABLE) == 0)
2521 if ((error = fo_seek(fp, 0, SEEK_CUR, td)) != 0)
2523 current_offset = td->td_uretoff.tdu_off;
2525 current_offset = *offset;
2526 error = fo_sendfile(fp, out, NULL, NULL, current_offset, count,
2529 current_offset += *sbytes;
2531 *offset = current_offset;
2533 error = fo_seek(fp, current_offset, SEEK_SET, td);
2539 linux_sendfile_common(struct thread *td, l_int out, l_int in,
2540 off_t *offset, l_size_t count)
2542 struct file *fp, *ofp;
2546 /* Linux cannot have 0 count. */
2547 if (count <= 0 || (offset != NULL && *offset < 0))
2551 error = fget_read(td, in, &cap_pread_rights, &fp);
2554 if ((fp->f_type != DTYPE_SHM && fp->f_type != DTYPE_VNODE) ||
2555 (fp->f_type == DTYPE_VNODE &&
2556 (fp->f_vnode == NULL || fp->f_vnode->v_type != VREG))) {
2560 error = fget_unlocked(td, out, &cap_no_rights, &ofp);
2564 if (is_regular_file(fp) && is_regular_file(ofp)) {
2565 error = kern_copy_file_range(td, in, offset, out, NULL, count,
2569 if (is_sendfile(fp, ofp))
2570 error = sendfile_sendfile(td, fp, out, offset, count,
2573 error = sendfile_fallback(td, fp, out, offset, count,
2575 if (error == ENOBUFS && (ofp->f_flag & FNONBLOCK) != 0)
2578 td->td_retval[0] = sbytes;
2588 linux_sendfile(struct thread *td, struct linux_sendfile_args *arg)
2591 * Differences between FreeBSD and Linux sendfile:
2592 * - Linux doesn't send anything when count is 0 (FreeBSD uses 0 to
2593 * mean send the whole file).
2594 * - Linux can send to any fd whereas FreeBSD only supports sockets.
2595 * We therefore use FreeBSD sendfile where possible for performance,
2596 * but fall back on a manual copy (sendfile_fallback).
2597 * - Linux doesn't have an equivalent for FreeBSD's flags and sf_hdtr.
2598 * - Linux takes an offset pointer and updates it to the read location.
2599 * FreeBSD takes in an offset and a 'bytes read' parameter which is
2600 * only filled if it isn't NULL. We use this parameter to update the
2601 * offset pointer if it exists.
2602 * - Linux sendfile returns bytes read on success while FreeBSD
2603 * returns 0. We use the 'bytes read' parameter to get this value.
2610 if (arg->offset != NULL) {
2611 error = copyin(arg->offset, &offset, sizeof(offset));
2617 error = linux_sendfile_common(td, arg->out, arg->in,
2618 arg->offset != NULL ? &offset64 : NULL, arg->count);
2620 if (error == 0 && arg->offset != NULL) {
2621 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
2622 if (offset64 > INT32_MAX)
2625 offset = (l_off_t)offset64;
2626 error = copyout(&offset, arg->offset, sizeof(offset));
2632 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
2634 linux_sendfile64(struct thread *td, struct linux_sendfile64_args *arg)
2639 if (arg->offset != NULL) {
2640 error = copyin(arg->offset, &offset, sizeof(offset));
2645 error = linux_sendfile_common(td, arg->out, arg->in,
2646 arg->offset != NULL ? &offset : NULL, arg->count);
2648 if (error == 0 && arg->offset != NULL)
2649 error = copyout(&offset, arg->offset, sizeof(offset));
2654 /* Argument list sizes for linux_socketcall */
2655 static const unsigned char lxs_args_cnt[] = {
2656 0 /* unused*/, 3 /* socket */,
2657 3 /* bind */, 3 /* connect */,
2658 2 /* listen */, 3 /* accept */,
2659 3 /* getsockname */, 3 /* getpeername */,
2660 4 /* socketpair */, 4 /* send */,
2661 4 /* recv */, 6 /* sendto */,
2662 6 /* recvfrom */, 2 /* shutdown */,
2663 5 /* setsockopt */, 5 /* getsockopt */,
2664 3 /* sendmsg */, 3 /* recvmsg */,
2665 4 /* accept4 */, 5 /* recvmmsg */,
2666 4 /* sendmmsg */, 4 /* sendfile */
2668 #define LINUX_ARGS_CNT (nitems(lxs_args_cnt) - 1)
2669 #define LINUX_ARG_SIZE(x) (lxs_args_cnt[x] * sizeof(l_ulong))
2672 linux_socketcall(struct thread *td, struct linux_socketcall_args *args)
2675 #if defined(__amd64__) && defined(COMPAT_LINUX32)
2676 register_t l_args[6];
2681 if (args->what < LINUX_SOCKET || args->what > LINUX_ARGS_CNT)
2683 error = copyin(PTRIN(args->args), a, LINUX_ARG_SIZE(args->what));
2687 #if defined(__amd64__) && defined(COMPAT_LINUX32)
2688 for (int i = 0; i < lxs_args_cnt[args->what]; ++i)
2694 switch (args->what) {
2696 return (linux_socket(td, arg));
2698 return (linux_bind(td, arg));
2700 return (linux_connect(td, arg));
2702 return (linux_listen(td, arg));
2704 return (linux_accept(td, arg));
2705 case LINUX_GETSOCKNAME:
2706 return (linux_getsockname(td, arg));
2707 case LINUX_GETPEERNAME:
2708 return (linux_getpeername(td, arg));
2709 case LINUX_SOCKETPAIR:
2710 return (linux_socketpair(td, arg));
2712 return (linux_send(td, arg));
2714 return (linux_recv(td, arg));
2716 return (linux_sendto(td, arg));
2717 case LINUX_RECVFROM:
2718 return (linux_recvfrom(td, arg));
2719 case LINUX_SHUTDOWN:
2720 return (linux_shutdown(td, arg));
2721 case LINUX_SETSOCKOPT:
2722 return (linux_setsockopt(td, arg));
2723 case LINUX_GETSOCKOPT:
2724 return (linux_getsockopt(td, arg));
2726 return (linux_sendmsg(td, arg));
2728 return (linux_recvmsg(td, arg));
2730 return (linux_accept4(td, arg));
2731 case LINUX_RECVMMSG:
2732 return (linux_recvmmsg(td, arg));
2733 case LINUX_SENDMMSG:
2734 return (linux_sendmmsg(td, arg));
2735 case LINUX_SENDFILE:
2736 return (linux_sendfile(td, arg));
2739 linux_msg(td, "socket type %d not implemented", args->what);
2742 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */