FreeBSD/Linux Kernel Cross Reference
sys/sys/socket.h
1 /*-
2 * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
3 * The Regents of the University of California. 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 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)socket.h 8.4 (Berkeley) 2/21/94
30 * $FreeBSD$
31 */
32
33 #ifndef _SYS_SOCKET_H_
34 #define _SYS_SOCKET_H_
35
36 #include <sys/cdefs.h>
37 #include <sys/_types.h>
38 #include <sys/_iovec.h>
39 #include <machine/_align.h>
40
41 /*
42 * Definitions related to sockets: types, address families, options.
43 */
44
45 /*
46 * Data types.
47 */
48 #if __BSD_VISIBLE
49 #ifndef _GID_T_DECLARED
50 typedef __gid_t gid_t;
51 #define _GID_T_DECLARED
52 #endif
53
54 #ifndef _OFF_T_DECLARED
55 typedef __off_t off_t;
56 #define _OFF_T_DECLARED
57 #endif
58
59 #ifndef _PID_T_DECLARED
60 typedef __pid_t pid_t;
61 #define _PID_T_DECLARED
62 #endif
63 #endif
64
65 #ifndef _SA_FAMILY_T_DECLARED
66 typedef __sa_family_t sa_family_t;
67 #define _SA_FAMILY_T_DECLARED
68 #endif
69
70 #ifndef _SOCKLEN_T_DECLARED
71 typedef __socklen_t socklen_t;
72 #define _SOCKLEN_T_DECLARED
73 #endif
74
75 #ifndef _SSIZE_T_DECLARED
76 typedef __ssize_t ssize_t;
77 #define _SSIZE_T_DECLARED
78 #endif
79
80 #if __BSD_VISIBLE
81 #ifndef _UID_T_DECLARED
82 typedef __uid_t uid_t;
83 #define _UID_T_DECLARED
84 #endif
85 #endif
86
87 #ifndef _UINT32_T_DECLARED
88 typedef __uint32_t uint32_t;
89 #define _UINT32_T_DECLARED
90 #endif
91
92 #ifndef _UINTPTR_T_DECLARED
93 typedef __uintptr_t uintptr_t;
94 #define _UINTPTR_T_DECLARED
95 #endif
96
97 /*
98 * Types
99 */
100 #define SOCK_STREAM 1 /* stream socket */
101 #define SOCK_DGRAM 2 /* datagram socket */
102 #define SOCK_RAW 3 /* raw-protocol interface */
103 #if __BSD_VISIBLE
104 #define SOCK_RDM 4 /* reliably-delivered message */
105 #endif
106 #define SOCK_SEQPACKET 5 /* sequenced packet stream */
107
108 #if __BSD_VISIBLE
109 /*
110 * Creation flags, OR'ed into socket() and socketpair() type argument.
111 */
112 #define SOCK_CLOEXEC 0x10000000
113 #define SOCK_NONBLOCK 0x20000000
114 #endif
115
116 /*
117 * Option flags per-socket.
118 */
119 #define SO_DEBUG 0x0001 /* turn on debugging info recording */
120 #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
121 #define SO_REUSEADDR 0x0004 /* allow local address reuse */
122 #define SO_KEEPALIVE 0x0008 /* keep connections alive */
123 #define SO_DONTROUTE 0x0010 /* just use interface addresses */
124 #define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
125 #if __BSD_VISIBLE
126 #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
127 #endif
128 #define SO_LINGER 0x0080 /* linger on close if data present */
129 #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
130 #if __BSD_VISIBLE
131 #define SO_REUSEPORT 0x0200 /* allow local address & port reuse */
132 #define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */
133 #define SO_NOSIGPIPE 0x0800 /* no SIGPIPE from EPIPE */
134 #define SO_ACCEPTFILTER 0x1000 /* there is an accept filter */
135 #define SO_BINTIME 0x2000 /* timestamp received dgram traffic */
136 #endif
137 #define SO_NO_OFFLOAD 0x4000 /* socket cannot be offloaded */
138 #define SO_NO_DDP 0x8000 /* disable direct data placement */
139
140 /*
141 * Additional options, not kept in so_options.
142 */
143 #define SO_SNDBUF 0x1001 /* send buffer size */
144 #define SO_RCVBUF 0x1002 /* receive buffer size */
145 #define SO_SNDLOWAT 0x1003 /* send low-water mark */
146 #define SO_RCVLOWAT 0x1004 /* receive low-water mark */
147 #define SO_SNDTIMEO 0x1005 /* send timeout */
148 #define SO_RCVTIMEO 0x1006 /* receive timeout */
149 #define SO_ERROR 0x1007 /* get error status and clear */
150 #define SO_TYPE 0x1008 /* get socket type */
151 #if __BSD_VISIBLE
152 #define SO_LABEL 0x1009 /* socket's MAC label */
153 #define SO_PEERLABEL 0x1010 /* socket's peer's MAC label */
154 #define SO_LISTENQLIMIT 0x1011 /* socket's backlog limit */
155 #define SO_LISTENQLEN 0x1012 /* socket's complete queue length */
156 #define SO_LISTENINCQLEN 0x1013 /* socket's incomplete queue length */
157 #define SO_SETFIB 0x1014 /* use this FIB to route */
158 #define SO_USER_COOKIE 0x1015 /* user cookie (dummynet etc.) */
159 #define SO_PROTOCOL 0x1016 /* get socket protocol (Linux name) */
160 #define SO_PROTOTYPE SO_PROTOCOL /* alias for SO_PROTOCOL (SunOS name) */
161 #define SO_TS_CLOCK 0x1017 /* clock type used for SO_TIMESTAMP */
162 #endif
163
164 #if __BSD_VISIBLE
165 #define SO_TS_REALTIME_MICRO 0 /* microsecond resolution, realtime */
166 #define SO_TS_BINTIME 1 /* sub-nanosecond resolution, realtime */
167 #define SO_TS_REALTIME 2 /* nanosecond resolution, realtime */
168 #define SO_TS_MONOTONIC 3 /* nanosecond resolution, monotonic */
169 #define SO_TS_DEFAULT SO_TS_REALTIME_MICRO
170 #define SO_TS_CLOCK_MAX SO_TS_MONOTONIC
171 #endif
172
173 /*
174 * Space reserved for new socket options added by third-party vendors.
175 * This range applies to all socket option levels. New socket options
176 * in FreeBSD should always use an option value less than SO_VENDOR.
177 */
178 #if __BSD_VISIBLE
179 #define SO_VENDOR 0x80000000
180 #endif
181
182 /*
183 * Structure used for manipulating linger option.
184 */
185 struct linger {
186 int l_onoff; /* option on/off */
187 int l_linger; /* linger time */
188 };
189
190 #if __BSD_VISIBLE
191 struct accept_filter_arg {
192 char af_name[16];
193 char af_arg[256-16];
194 };
195 #endif
196
197 /*
198 * Level number for (get/set)sockopt() to apply to socket itself.
199 */
200 #define SOL_SOCKET 0xffff /* options for socket level */
201
202 /*
203 * Address families.
204 */
205 #define AF_UNSPEC 0 /* unspecified */
206 #if __BSD_VISIBLE
207 #define AF_LOCAL AF_UNIX /* local to host (pipes, portals) */
208 #endif
209 #define AF_UNIX 1 /* standardized name for AF_LOCAL */
210 #define AF_INET 2 /* internetwork: UDP, TCP, etc. */
211 #if __BSD_VISIBLE
212 #define AF_IMPLINK 3 /* arpanet imp addresses */
213 #define AF_PUP 4 /* pup protocols: e.g. BSP */
214 #define AF_CHAOS 5 /* mit CHAOS protocols */
215 #define AF_NETBIOS 6 /* SMB protocols */
216 #define AF_ISO 7 /* ISO protocols */
217 #define AF_OSI AF_ISO
218 #define AF_ECMA 8 /* European computer manufacturers */
219 #define AF_DATAKIT 9 /* datakit protocols */
220 #define AF_CCITT 10 /* CCITT protocols, X.25 etc */
221 #define AF_SNA 11 /* IBM SNA */
222 #define AF_DECnet 12 /* DECnet */
223 #define AF_DLI 13 /* DEC Direct data link interface */
224 #define AF_LAT 14 /* LAT */
225 #define AF_HYLINK 15 /* NSC Hyperchannel */
226 #define AF_APPLETALK 16 /* Apple Talk */
227 #define AF_ROUTE 17 /* Internal Routing Protocol */
228 #define AF_LINK 18 /* Link layer interface */
229 #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */
230 #define AF_COIP 20 /* connection-oriented IP, aka ST II */
231 #define AF_CNT 21 /* Computer Network Technology */
232 #define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */
233 #define AF_IPX 23 /* Novell Internet Protocol */
234 #define AF_SIP 24 /* Simple Internet Protocol */
235 #define pseudo_AF_PIP 25 /* Help Identify PIP packets */
236 #define AF_ISDN 26 /* Integrated Services Digital Network*/
237 #define AF_E164 AF_ISDN /* CCITT E.164 recommendation */
238 #define pseudo_AF_KEY 27 /* Internal key-management function */
239 #endif
240 #define AF_INET6 28 /* IPv6 */
241 #if __BSD_VISIBLE
242 #define AF_NATM 29 /* native ATM access */
243 #define AF_ATM 30 /* ATM */
244 #define pseudo_AF_HDRCMPLT 31 /* Used by BPF to not rewrite headers
245 * in interface output routine
246 */
247 #define AF_NETGRAPH 32 /* Netgraph sockets */
248 #define AF_SLOW 33 /* 802.3ad slow protocol */
249 #define AF_SCLUSTER 34 /* Sitara cluster protocol */
250 #define AF_ARP 35
251 #define AF_BLUETOOTH 36 /* Bluetooth sockets */
252 #define AF_IEEE80211 37 /* IEEE 802.11 protocol */
253 #define AF_INET_SDP 40 /* OFED Socket Direct Protocol ipv4 */
254 #define AF_INET6_SDP 42 /* OFED Socket Direct Protocol ipv6 */
255 #define AF_MAX 42
256 /*
257 * When allocating a new AF_ constant, please only allocate
258 * even numbered constants for FreeBSD until 134 as odd numbered AF_
259 * constants 39-133 are now reserved for vendors.
260 */
261 #define AF_VENDOR00 39
262 #define AF_VENDOR01 41
263 #define AF_VENDOR02 43
264 #define AF_VENDOR03 45
265 #define AF_VENDOR04 47
266 #define AF_VENDOR05 49
267 #define AF_VENDOR06 51
268 #define AF_VENDOR07 53
269 #define AF_VENDOR08 55
270 #define AF_VENDOR09 57
271 #define AF_VENDOR10 59
272 #define AF_VENDOR11 61
273 #define AF_VENDOR12 63
274 #define AF_VENDOR13 65
275 #define AF_VENDOR14 67
276 #define AF_VENDOR15 69
277 #define AF_VENDOR16 71
278 #define AF_VENDOR17 73
279 #define AF_VENDOR18 75
280 #define AF_VENDOR19 77
281 #define AF_VENDOR20 79
282 #define AF_VENDOR21 81
283 #define AF_VENDOR22 83
284 #define AF_VENDOR23 85
285 #define AF_VENDOR24 87
286 #define AF_VENDOR25 89
287 #define AF_VENDOR26 91
288 #define AF_VENDOR27 93
289 #define AF_VENDOR28 95
290 #define AF_VENDOR29 97
291 #define AF_VENDOR30 99
292 #define AF_VENDOR31 101
293 #define AF_VENDOR32 103
294 #define AF_VENDOR33 105
295 #define AF_VENDOR34 107
296 #define AF_VENDOR35 109
297 #define AF_VENDOR36 111
298 #define AF_VENDOR37 113
299 #define AF_VENDOR38 115
300 #define AF_VENDOR39 117
301 #define AF_VENDOR40 119
302 #define AF_VENDOR41 121
303 #define AF_VENDOR42 123
304 #define AF_VENDOR43 125
305 #define AF_VENDOR44 127
306 #define AF_VENDOR45 129
307 #define AF_VENDOR46 131
308 #define AF_VENDOR47 133
309 #endif
310
311 /*
312 * Structure used by kernel to store most
313 * addresses.
314 */
315 struct sockaddr {
316 unsigned char sa_len; /* total length */
317 sa_family_t sa_family; /* address family */
318 char sa_data[14]; /* actually longer; address value */
319 };
320 #if __BSD_VISIBLE
321 #define SOCK_MAXADDRLEN 255 /* longest possible addresses */
322
323 /*
324 * Structure used by kernel to pass protocol
325 * information in raw sockets.
326 */
327 struct sockproto {
328 unsigned short sp_family; /* address family */
329 unsigned short sp_protocol; /* protocol */
330 };
331 #endif
332
333 #include <sys/_sockaddr_storage.h>
334
335 #if __BSD_VISIBLE
336 /*
337 * Protocol families, same as address families for now.
338 */
339 #define PF_UNSPEC AF_UNSPEC
340 #define PF_LOCAL AF_LOCAL
341 #define PF_UNIX PF_LOCAL /* backward compatibility */
342 #define PF_INET AF_INET
343 #define PF_IMPLINK AF_IMPLINK
344 #define PF_PUP AF_PUP
345 #define PF_CHAOS AF_CHAOS
346 #define PF_NETBIOS AF_NETBIOS
347 #define PF_ISO AF_ISO
348 #define PF_OSI AF_ISO
349 #define PF_ECMA AF_ECMA
350 #define PF_DATAKIT AF_DATAKIT
351 #define PF_CCITT AF_CCITT
352 #define PF_SNA AF_SNA
353 #define PF_DECnet AF_DECnet
354 #define PF_DLI AF_DLI
355 #define PF_LAT AF_LAT
356 #define PF_HYLINK AF_HYLINK
357 #define PF_APPLETALK AF_APPLETALK
358 #define PF_ROUTE AF_ROUTE
359 #define PF_LINK AF_LINK
360 #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */
361 #define PF_COIP AF_COIP
362 #define PF_CNT AF_CNT
363 #define PF_SIP AF_SIP
364 #define PF_IPX AF_IPX
365 #define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */
366 #define PF_PIP pseudo_AF_PIP
367 #define PF_ISDN AF_ISDN
368 #define PF_KEY pseudo_AF_KEY
369 #define PF_INET6 AF_INET6
370 #define PF_NATM AF_NATM
371 #define PF_ATM AF_ATM
372 #define PF_NETGRAPH AF_NETGRAPH
373 #define PF_SLOW AF_SLOW
374 #define PF_SCLUSTER AF_SCLUSTER
375 #define PF_ARP AF_ARP
376 #define PF_BLUETOOTH AF_BLUETOOTH
377 #define PF_IEEE80211 AF_IEEE80211
378 #define PF_INET_SDP AF_INET_SDP
379 #define PF_INET6_SDP AF_INET6_SDP
380
381 #define PF_MAX AF_MAX
382
383 /*
384 * Definitions for network related sysctl, CTL_NET.
385 *
386 * Second level is protocol family.
387 * Third level is protocol number.
388 *
389 * Further levels are defined by the individual families.
390 */
391
392 /*
393 * PF_ROUTE - Routing table
394 *
395 * Three additional levels are defined:
396 * Fourth: address family, 0 is wildcard
397 * Fifth: type of info, defined below
398 * Sixth: flag(s) to mask with for NET_RT_FLAGS
399 */
400 #define NET_RT_DUMP 1 /* dump; may limit to a.f. */
401 #define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */
402 #define NET_RT_IFLIST 3 /* survey interface list */
403 #define NET_RT_IFMALIST 4 /* return multicast address list */
404 #define NET_RT_IFLISTL 5 /* Survey interface list, using 'l'en
405 * versions of msghdr structs. */
406 #endif /* __BSD_VISIBLE */
407
408 /*
409 * Maximum queue length specifiable by listen.
410 */
411 #define SOMAXCONN 128
412
413 /*
414 * Message header for recvmsg and sendmsg calls.
415 * Used value-result for recvmsg, value only for sendmsg.
416 */
417 struct msghdr {
418 void *msg_name; /* optional address */
419 socklen_t msg_namelen; /* size of address */
420 struct iovec *msg_iov; /* scatter/gather array */
421 int msg_iovlen; /* # elements in msg_iov */
422 void *msg_control; /* ancillary data, see below */
423 socklen_t msg_controllen; /* ancillary data buffer len */
424 int msg_flags; /* flags on received message */
425 };
426
427 #define MSG_OOB 0x1 /* process out-of-band data */
428 #define MSG_PEEK 0x2 /* peek at incoming message */
429 #define MSG_DONTROUTE 0x4 /* send without using routing tables */
430 #define MSG_EOR 0x8 /* data completes record */
431 #define MSG_TRUNC 0x10 /* data discarded before delivery */
432 #define MSG_CTRUNC 0x20 /* control data lost before delivery */
433 #define MSG_WAITALL 0x40 /* wait for full request or error */
434 #if __POSIX_VISIBLE >= 200809
435 #define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */
436 #endif
437 #if __BSD_VISIBLE
438 #define MSG_DONTWAIT 0x80 /* this message should be nonblocking */
439 #define MSG_EOF 0x100 /* data completes connection */
440 #define MSG_NOTIFICATION 0x2000 /* SCTP notification */
441 #define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */
442 #define MSG_COMPAT 0x8000 /* used in sendit() */
443 #define MSG_CMSG_CLOEXEC 0x40000 /* make received fds close-on-exec */
444 #define MSG_WAITFORONE 0x80000 /* for recvmmsg() */
445 #endif
446 #ifdef _KERNEL
447 #define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */
448 #define MSG_MORETOCOME 0x100000 /* additional data pending */
449 #endif
450
451 /*
452 * Header for ancillary data objects in msg_control buffer.
453 * Used for additional information with/about a datagram
454 * not expressible by flags. The format is a sequence
455 * of message elements headed by cmsghdr structures.
456 */
457 struct cmsghdr {
458 socklen_t cmsg_len; /* data byte count, including hdr */
459 int cmsg_level; /* originating protocol */
460 int cmsg_type; /* protocol-specific type */
461 /* followed by u_char cmsg_data[]; */
462 };
463
464 #if __BSD_VISIBLE
465 /*
466 * While we may have more groups than this, the cmsgcred struct must
467 * be able to fit in an mbuf and we have historically supported a
468 * maximum of 16 groups.
469 */
470 #define CMGROUP_MAX 16
471
472 /*
473 * Credentials structure, used to verify the identity of a peer
474 * process that has sent us a message. This is allocated by the
475 * peer process but filled in by the kernel. This prevents the
476 * peer from lying about its identity. (Note that cmcred_groups[0]
477 * is the effective GID.)
478 */
479 struct cmsgcred {
480 pid_t cmcred_pid; /* PID of sending process */
481 uid_t cmcred_uid; /* real UID of sending process */
482 uid_t cmcred_euid; /* effective UID of sending process */
483 gid_t cmcred_gid; /* real GID of sending process */
484 short cmcred_ngroups; /* number or groups */
485 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */
486 };
487
488 /*
489 * Socket credentials.
490 */
491 struct sockcred {
492 uid_t sc_uid; /* real user id */
493 uid_t sc_euid; /* effective user id */
494 gid_t sc_gid; /* real group id */
495 gid_t sc_egid; /* effective group id */
496 int sc_ngroups; /* number of supplemental groups */
497 gid_t sc_groups[1]; /* variable length */
498 };
499
500 /*
501 * Compute size of a sockcred structure with groups.
502 */
503 #define SOCKCREDSIZE(ngrps) \
504 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))
505
506 #endif /* __BSD_VISIBLE */
507
508 /* given pointer to struct cmsghdr, return pointer to data */
509 #define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \
510 _ALIGN(sizeof(struct cmsghdr)))
511
512 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
513 #define CMSG_NXTHDR(mhdr, cmsg) \
514 ((char *)(cmsg) == (char *)0 ? CMSG_FIRSTHDR(mhdr) : \
515 ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \
516 _ALIGN(sizeof(struct cmsghdr)) > \
517 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \
518 (struct cmsghdr *)0 : \
519 (struct cmsghdr *)(void *)((char *)(cmsg) + \
520 _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len)))
521
522 /*
523 * RFC 2292 requires to check msg_controllen, in case that the kernel returns
524 * an empty list for some reasons.
525 */
526 #define CMSG_FIRSTHDR(mhdr) \
527 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
528 (struct cmsghdr *)(mhdr)->msg_control : \
529 (struct cmsghdr *)0)
530
531 #if __BSD_VISIBLE
532 /* RFC 2292 additions */
533 #define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l))
534 #define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l))
535 #endif
536
537 #ifdef _KERNEL
538 #define CMSG_ALIGN(n) _ALIGN(n)
539 #endif
540
541 /* "Socket"-level control message types: */
542 #define SCM_RIGHTS 0x01 /* access rights (array of int) */
543 #if __BSD_VISIBLE
544 #define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */
545 #define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */
546 #define SCM_BINTIME 0x04 /* timestamp (struct bintime) */
547 #define SCM_REALTIME 0x05 /* timestamp (struct timespec) */
548 #define SCM_MONOTONIC 0x06 /* timestamp (struct timespec) */
549 #endif
550
551 #if __BSD_VISIBLE
552 /*
553 * 4.3 compat sockaddr, move to compat file later
554 */
555 struct osockaddr {
556 unsigned short sa_family; /* address family */
557 char sa_data[14]; /* up to 14 bytes of direct address */
558 };
559
560 /*
561 * 4.3-compat message header (move to compat file later).
562 */
563 struct omsghdr {
564 char *msg_name; /* optional address */
565 int msg_namelen; /* size of address */
566 struct iovec *msg_iov; /* scatter/gather array */
567 int msg_iovlen; /* # elements in msg_iov */
568 char *msg_accrights; /* access rights sent/received */
569 int msg_accrightslen;
570 };
571 #endif
572
573 /*
574 * howto arguments for shutdown(2), specified by Posix.1g.
575 */
576 #define SHUT_RD 0 /* shut down the reading side */
577 #define SHUT_WR 1 /* shut down the writing side */
578 #define SHUT_RDWR 2 /* shut down both sides */
579
580 #if __BSD_VISIBLE
581 /* for SCTP */
582 /* we cheat and use the SHUT_XX defines for these */
583 #define PRU_FLUSH_RD SHUT_RD
584 #define PRU_FLUSH_WR SHUT_WR
585 #define PRU_FLUSH_RDWR SHUT_RDWR
586 #endif
587
588
589 #if __BSD_VISIBLE
590 /*
591 * sendfile(2) header/trailer struct
592 */
593 struct sf_hdtr {
594 struct iovec *headers; /* pointer to an array of header struct iovec's */
595 int hdr_cnt; /* number of header iovec's */
596 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */
597 int trl_cnt; /* number of trailer iovec's */
598 };
599
600 /*
601 * Sendfile-specific flag(s)
602 */
603 #define SF_NODISKIO 0x00000001
604 #define SF_MNOWAIT 0x00000002 /* obsolete */
605 #define SF_SYNC 0x00000004
606 #define SF_NOCACHE 0x00000010
607 #define SF_FLAGS(rh, flags) (((rh) << 16) | (flags))
608
609 #ifdef _KERNEL
610 #define SF_READAHEAD(flags) ((flags) >> 16)
611 #endif /* _KERNEL */
612
613 /*
614 * Sendmmsg/recvmmsg specific structure(s)
615 */
616 struct mmsghdr {
617 struct msghdr msg_hdr; /* message header */
618 ssize_t msg_len; /* message length */
619 };
620 #endif /* __BSD_VISIBLE */
621
622 #ifndef _KERNEL
623
624 #include <sys/cdefs.h>
625
626 __BEGIN_DECLS
627 int accept(int, struct sockaddr * __restrict, socklen_t * __restrict);
628 int bind(int, const struct sockaddr *, socklen_t);
629 int connect(int, const struct sockaddr *, socklen_t);
630 #if __BSD_VISIBLE
631 int accept4(int, struct sockaddr * __restrict, socklen_t * __restrict, int);
632 int bindat(int, int, const struct sockaddr *, socklen_t);
633 int connectat(int, int, const struct sockaddr *, socklen_t);
634 #endif
635 int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict);
636 int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict);
637 int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict);
638 int listen(int, int);
639 ssize_t recv(int, void *, size_t, int);
640 ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict);
641 ssize_t recvmsg(int, struct msghdr *, int);
642 #if __BSD_VISIBLE
643 struct timespec;
644 ssize_t recvmmsg(int, struct mmsghdr * __restrict, size_t, int,
645 const struct timespec * __restrict);
646 #endif
647 ssize_t send(int, const void *, size_t, int);
648 ssize_t sendto(int, const void *,
649 size_t, int, const struct sockaddr *, socklen_t);
650 ssize_t sendmsg(int, const struct msghdr *, int);
651 #if __BSD_VISIBLE
652 int sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int);
653 ssize_t sendmmsg(int, struct mmsghdr * __restrict, size_t, int);
654 int setfib(int);
655 #endif
656 int setsockopt(int, int, int, const void *, socklen_t);
657 int shutdown(int, int);
658 int sockatmark(int);
659 int socket(int, int, int);
660 int socketpair(int, int, int, int *);
661 __END_DECLS
662
663 #endif /* !_KERNEL */
664
665 #ifdef _KERNEL
666 struct socket;
667
668 struct tcpcb *so_sototcpcb(struct socket *so);
669 struct inpcb *so_sotoinpcb(struct socket *so);
670 struct sockbuf *so_sockbuf_snd(struct socket *);
671 struct sockbuf *so_sockbuf_rcv(struct socket *);
672
673 int so_state_get(const struct socket *);
674 void so_state_set(struct socket *, int);
675
676 int so_options_get(const struct socket *);
677 void so_options_set(struct socket *, int);
678
679 int so_error_get(const struct socket *);
680 void so_error_set(struct socket *, int);
681
682 int so_linger_get(const struct socket *);
683 void so_linger_set(struct socket *, int);
684
685 struct protosw *so_protosw_get(const struct socket *);
686 void so_protosw_set(struct socket *, struct protosw *);
687
688 void so_sorwakeup_locked(struct socket *so);
689 void so_sowwakeup_locked(struct socket *so);
690
691 void so_sorwakeup(struct socket *so);
692 void so_sowwakeup(struct socket *so);
693
694 void so_lock(struct socket *so);
695 void so_unlock(struct socket *so);
696
697 void so_listeners_apply_all(struct socket *so, void (*func)(struct socket *, void *), void *arg);
698
699 #endif
700
701
702 #endif /* !_SYS_SOCKET_H_ */
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