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 #define _NO_NAMESPACE_POLLUTION
40 #include <machine/param.h>
41 #undef _NO_NAMESPACE_POLLUTION
42
43 /*
44 * Definitions related to sockets: types, address families, options.
45 */
46
47 /*
48 * Data types.
49 */
50 #if __BSD_VISIBLE
51 #ifndef _GID_T_DECLARED
52 typedef __gid_t gid_t;
53 #define _GID_T_DECLARED
54 #endif
55
56 #ifndef _OFF_T_DECLARED
57 typedef __off_t off_t;
58 #define _OFF_T_DECLARED
59 #endif
60
61 #ifndef _PID_T_DECLARED
62 typedef __pid_t pid_t;
63 #define _PID_T_DECLARED
64 #endif
65 #endif
66
67 #ifndef _SA_FAMILY_T_DECLARED
68 typedef __sa_family_t sa_family_t;
69 #define _SA_FAMILY_T_DECLARED
70 #endif
71
72 #ifndef _SOCKLEN_T_DECLARED
73 typedef __socklen_t socklen_t;
74 #define _SOCKLEN_T_DECLARED
75 #endif
76
77 #ifndef _SSIZE_T_DECLARED
78 typedef __ssize_t ssize_t;
79 #define _SSIZE_T_DECLARED
80 #endif
81
82 #if __BSD_VISIBLE
83 #ifndef _UID_T_DECLARED
84 typedef __uid_t uid_t;
85 #define _UID_T_DECLARED
86 #endif
87 #endif
88
89 /*
90 * Types
91 */
92 #define SOCK_STREAM 1 /* stream socket */
93 #define SOCK_DGRAM 2 /* datagram socket */
94 #define SOCK_RAW 3 /* raw-protocol interface */
95 #if __BSD_VISIBLE
96 #define SOCK_RDM 4 /* reliably-delivered message */
97 #endif
98 #define SOCK_SEQPACKET 5 /* sequenced packet stream */
99
100 /*
101 * Option flags per-socket.
102 */
103 #define SO_DEBUG 0x0001 /* turn on debugging info recording */
104 #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
105 #define SO_REUSEADDR 0x0004 /* allow local address reuse */
106 #define SO_KEEPALIVE 0x0008 /* keep connections alive */
107 #define SO_DONTROUTE 0x0010 /* just use interface addresses */
108 #define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
109 #if __BSD_VISIBLE
110 #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
111 #endif
112 #define SO_LINGER 0x0080 /* linger on close if data present */
113 #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
114 #if __BSD_VISIBLE
115 #define SO_REUSEPORT 0x0200 /* allow local address & port reuse */
116 #define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */
117 #define SO_NOSIGPIPE 0x0800 /* no SIGPIPE from EPIPE */
118 #define SO_ACCEPTFILTER 0x1000 /* there is an accept filter */
119 #define SO_BINTIME 0x2000 /* timestamp received dgram traffic */
120 #endif
121
122 /*
123 * Additional options, not kept in so_options.
124 */
125 #define SO_SNDBUF 0x1001 /* send buffer size */
126 #define SO_RCVBUF 0x1002 /* receive buffer size */
127 #define SO_SNDLOWAT 0x1003 /* send low-water mark */
128 #define SO_RCVLOWAT 0x1004 /* receive low-water mark */
129 #define SO_SNDTIMEO 0x1005 /* send timeout */
130 #define SO_RCVTIMEO 0x1006 /* receive timeout */
131 #define SO_ERROR 0x1007 /* get error status and clear */
132 #define SO_TYPE 0x1008 /* get socket type */
133 #if __BSD_VISIBLE
134 #define SO_LABEL 0x1009 /* socket's MAC label */
135 #define SO_PEERLABEL 0x1010 /* socket's peer's MAC label */
136 #define SO_LISTENQLIMIT 0x1011 /* socket's backlog limit */
137 #define SO_LISTENQLEN 0x1012 /* socket's complete queue length */
138 #define SO_LISTENINCQLEN 0x1013 /* socket's incomplete queue length */
139 #endif
140
141 /*
142 * Structure used for manipulating linger option.
143 */
144 struct linger {
145 int l_onoff; /* option on/off */
146 int l_linger; /* linger time */
147 };
148
149 #if __BSD_VISIBLE
150 struct accept_filter_arg {
151 char af_name[16];
152 char af_arg[256-16];
153 };
154 #endif
155
156 /*
157 * Level number for (get/set)sockopt() to apply to socket itself.
158 */
159 #define SOL_SOCKET 0xffff /* options for socket level */
160
161 /*
162 * Address families.
163 */
164 #define AF_UNSPEC 0 /* unspecified */
165 #if __BSD_VISIBLE
166 #define AF_LOCAL AF_UNIX /* local to host (pipes, portals) */
167 #endif
168 #define AF_UNIX 1 /* standardized name for AF_LOCAL */
169 #define AF_INET 2 /* internetwork: UDP, TCP, etc. */
170 #if __BSD_VISIBLE
171 #define AF_IMPLINK 3 /* arpanet imp addresses */
172 #define AF_PUP 4 /* pup protocols: e.g. BSP */
173 #define AF_CHAOS 5 /* mit CHAOS protocols */
174 #define AF_NETBIOS 6 /* SMB protocols */
175 #define AF_ISO 7 /* ISO protocols */
176 #define AF_OSI AF_ISO
177 #define AF_ECMA 8 /* European computer manufacturers */
178 #define AF_DATAKIT 9 /* datakit protocols */
179 #define AF_CCITT 10 /* CCITT protocols, X.25 etc */
180 #define AF_SNA 11 /* IBM SNA */
181 #define AF_DECnet 12 /* DECnet */
182 #define AF_DLI 13 /* DEC Direct data link interface */
183 #define AF_LAT 14 /* LAT */
184 #define AF_HYLINK 15 /* NSC Hyperchannel */
185 #define AF_APPLETALK 16 /* Apple Talk */
186 #define AF_ROUTE 17 /* Internal Routing Protocol */
187 #define AF_LINK 18 /* Link layer interface */
188 #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */
189 #define AF_COIP 20 /* connection-oriented IP, aka ST II */
190 #define AF_CNT 21 /* Computer Network Technology */
191 #define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */
192 #define AF_IPX 23 /* Novell Internet Protocol */
193 #define AF_SIP 24 /* Simple Internet Protocol */
194 #define pseudo_AF_PIP 25 /* Help Identify PIP packets */
195 #define AF_ISDN 26 /* Integrated Services Digital Network*/
196 #define AF_E164 AF_ISDN /* CCITT E.164 recommendation */
197 #define pseudo_AF_KEY 27 /* Internal key-management function */
198 #endif
199 #define AF_INET6 28 /* IPv6 */
200 #if __BSD_VISIBLE
201 #define AF_NATM 29 /* native ATM access */
202 #define AF_ATM 30 /* ATM */
203 #define pseudo_AF_HDRCMPLT 31 /* Used by BPF to not rewrite headers
204 * in interface output routine
205 */
206 #define AF_NETGRAPH 32 /* Netgraph sockets */
207 #define AF_SLOW 33 /* 802.3ad slow protocol */
208 #define AF_SCLUSTER 34 /* Sitara cluster protocol */
209 #define AF_ARP 35
210 #define AF_BLUETOOTH 36 /* Bluetooth sockets */
211 #define AF_IEEE80211 37 /* IEEE 802.11 protocol */
212 #define AF_MAX 38
213 /*
214 * When allocating a new AF_ constant, please only allocate
215 * even numbered constants for FreeBSD until 134 as odd numbered AF_
216 * constants 39-133 are now reserved for vendors.
217 */
218 #define AF_VENDOR00 39
219 #define AF_VENDOR01 41
220 #define AF_VENDOR02 43
221 #define AF_VENDOR03 45
222 #define AF_VENDOR04 47
223 #define AF_VENDOR05 49
224 #define AF_VENDOR06 51
225 #define AF_VENDOR07 53
226 #define AF_VENDOR08 55
227 #define AF_VENDOR09 57
228 #define AF_VENDOR10 59
229 #define AF_VENDOR11 61
230 #define AF_VENDOR12 63
231 #define AF_VENDOR13 65
232 #define AF_VENDOR14 67
233 #define AF_VENDOR15 69
234 #define AF_VENDOR16 71
235 #define AF_VENDOR17 73
236 #define AF_VENDOR18 75
237 #define AF_VENDOR19 77
238 #define AF_VENDOR20 79
239 #define AF_VENDOR21 81
240 #define AF_VENDOR22 83
241 #define AF_VENDOR23 85
242 #define AF_VENDOR24 87
243 #define AF_VENDOR25 89
244 #define AF_VENDOR26 91
245 #define AF_VENDOR27 93
246 #define AF_VENDOR28 95
247 #define AF_VENDOR29 97
248 #define AF_VENDOR30 99
249 #define AF_VENDOR31 101
250 #define AF_VENDOR32 103
251 #define AF_VENDOR33 105
252 #define AF_VENDOR34 107
253 #define AF_VENDOR35 109
254 #define AF_VENDOR36 111
255 #define AF_VENDOR37 113
256 #define AF_VENDOR38 115
257 #define AF_VENDOR39 117
258 #define AF_VENDOR40 119
259 #define AF_VENDOR41 121
260 #define AF_VENDOR42 123
261 #define AF_VENDOR43 125
262 #define AF_VENDOR44 127
263 #define AF_VENDOR45 129
264 #define AF_VENDOR46 131
265 #define AF_VENDOR47 133
266 #endif
267
268 /*
269 * Structure used by kernel to store most
270 * addresses.
271 */
272 struct sockaddr {
273 unsigned char sa_len; /* total length */
274 sa_family_t sa_family; /* address family */
275 char sa_data[14]; /* actually longer; address value */
276 };
277 #if __BSD_VISIBLE
278 #define SOCK_MAXADDRLEN 255 /* longest possible addresses */
279
280 /*
281 * Structure used by kernel to pass protocol
282 * information in raw sockets.
283 */
284 struct sockproto {
285 unsigned short sp_family; /* address family */
286 unsigned short sp_protocol; /* protocol */
287 };
288 #endif
289
290 #ifndef _STRUCT_SOCKADDR_STORAGE_DECLARED
291 /*
292 * RFC 2553: protocol-independent placeholder for socket addresses
293 */
294 #define _SS_MAXSIZE 128U
295 #define _SS_ALIGNSIZE (sizeof(__int64_t))
296 #define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(unsigned char) - \
297 sizeof(sa_family_t))
298 #define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(unsigned char) - \
299 sizeof(sa_family_t) - _SS_PAD1SIZE - _SS_ALIGNSIZE)
300
301 struct sockaddr_storage {
302 unsigned char ss_len; /* address length */
303 sa_family_t ss_family; /* address family */
304 char __ss_pad1[_SS_PAD1SIZE];
305 __int64_t __ss_align; /* force desired struct alignment */
306 char __ss_pad2[_SS_PAD2SIZE];
307 };
308 #define _STRUCT_SOCKADDR_STORAGE_DECLARED
309 #endif
310
311 #if __BSD_VISIBLE
312 /*
313 * Protocol families, same as address families for now.
314 */
315 #define PF_UNSPEC AF_UNSPEC
316 #define PF_LOCAL AF_LOCAL
317 #define PF_UNIX PF_LOCAL /* backward compatibility */
318 #define PF_INET AF_INET
319 #define PF_IMPLINK AF_IMPLINK
320 #define PF_PUP AF_PUP
321 #define PF_CHAOS AF_CHAOS
322 #define PF_NETBIOS AF_NETBIOS
323 #define PF_ISO AF_ISO
324 #define PF_OSI AF_ISO
325 #define PF_ECMA AF_ECMA
326 #define PF_DATAKIT AF_DATAKIT
327 #define PF_CCITT AF_CCITT
328 #define PF_SNA AF_SNA
329 #define PF_DECnet AF_DECnet
330 #define PF_DLI AF_DLI
331 #define PF_LAT AF_LAT
332 #define PF_HYLINK AF_HYLINK
333 #define PF_APPLETALK AF_APPLETALK
334 #define PF_ROUTE AF_ROUTE
335 #define PF_LINK AF_LINK
336 #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */
337 #define PF_COIP AF_COIP
338 #define PF_CNT AF_CNT
339 #define PF_SIP AF_SIP
340 #define PF_IPX AF_IPX
341 #define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */
342 #define PF_PIP pseudo_AF_PIP
343 #define PF_ISDN AF_ISDN
344 #define PF_KEY pseudo_AF_KEY
345 #define PF_INET6 AF_INET6
346 #define PF_NATM AF_NATM
347 #define PF_ATM AF_ATM
348 #define PF_NETGRAPH AF_NETGRAPH
349 #define PF_SLOW AF_SLOW
350 #define PF_SCLUSTER AF_SCLUSTER
351 #define PF_ARP AF_ARP
352 #define PF_BLUETOOTH AF_BLUETOOTH
353
354 #define PF_MAX AF_MAX
355
356 /*
357 * Definitions for network related sysctl, CTL_NET.
358 *
359 * Second level is protocol family.
360 * Third level is protocol number.
361 *
362 * Further levels are defined by the individual families below.
363 */
364 #define NET_MAXID AF_MAX
365
366 #define CTL_NET_NAMES { \
367 { 0, 0 }, \
368 { "unix", CTLTYPE_NODE }, \
369 { "inet", CTLTYPE_NODE }, \
370 { "implink", CTLTYPE_NODE }, \
371 { "pup", CTLTYPE_NODE }, \
372 { "chaos", CTLTYPE_NODE }, \
373 { "xerox_ns", CTLTYPE_NODE }, \
374 { "iso", CTLTYPE_NODE }, \
375 { "emca", CTLTYPE_NODE }, \
376 { "datakit", CTLTYPE_NODE }, \
377 { "ccitt", CTLTYPE_NODE }, \
378 { "ibm_sna", CTLTYPE_NODE }, \
379 { "decnet", CTLTYPE_NODE }, \
380 { "dec_dli", CTLTYPE_NODE }, \
381 { "lat", CTLTYPE_NODE }, \
382 { "hylink", CTLTYPE_NODE }, \
383 { "appletalk", CTLTYPE_NODE }, \
384 { "route", CTLTYPE_NODE }, \
385 { "link_layer", CTLTYPE_NODE }, \
386 { "xtp", CTLTYPE_NODE }, \
387 { "coip", CTLTYPE_NODE }, \
388 { "cnt", CTLTYPE_NODE }, \
389 { "rtip", CTLTYPE_NODE }, \
390 { "ipx", CTLTYPE_NODE }, \
391 { "sip", CTLTYPE_NODE }, \
392 { "pip", CTLTYPE_NODE }, \
393 { "isdn", CTLTYPE_NODE }, \
394 { "key", CTLTYPE_NODE }, \
395 { "inet6", CTLTYPE_NODE }, \
396 { "natm", CTLTYPE_NODE }, \
397 { "atm", CTLTYPE_NODE }, \
398 { "hdrcomplete", CTLTYPE_NODE }, \
399 { "netgraph", CTLTYPE_NODE }, \
400 { "snp", CTLTYPE_NODE }, \
401 { "scp", CTLTYPE_NODE }, \
402 }
403
404 /*
405 * PF_ROUTE - Routing table
406 *
407 * Three additional levels are defined:
408 * Fourth: address family, 0 is wildcard
409 * Fifth: type of info, defined below
410 * Sixth: flag(s) to mask with for NET_RT_FLAGS
411 */
412 #define NET_RT_DUMP 1 /* dump; may limit to a.f. */
413 #define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */
414 #define NET_RT_IFLIST 3 /* survey interface list */
415 #define NET_RT_IFMALIST 4 /* return multicast address list */
416 #define NET_RT_MAXID 5
417
418 #define CTL_NET_RT_NAMES { \
419 { 0, 0 }, \
420 { "dump", CTLTYPE_STRUCT }, \
421 { "flags", CTLTYPE_STRUCT }, \
422 { "iflist", CTLTYPE_STRUCT }, \
423 { "ifmalist", CTLTYPE_STRUCT }, \
424 }
425 #endif /* __BSD_VISIBLE */
426
427 /*
428 * Maximum queue length specifiable by listen.
429 */
430 #define SOMAXCONN 128
431
432 /*
433 * Message header for recvmsg and sendmsg calls.
434 * Used value-result for recvmsg, value only for sendmsg.
435 */
436 struct msghdr {
437 void *msg_name; /* optional address */
438 socklen_t msg_namelen; /* size of address */
439 struct iovec *msg_iov; /* scatter/gather array */
440 int msg_iovlen; /* # elements in msg_iov */
441 void *msg_control; /* ancillary data, see below */
442 socklen_t msg_controllen; /* ancillary data buffer len */
443 int msg_flags; /* flags on received message */
444 };
445
446 #define MSG_OOB 0x1 /* process out-of-band data */
447 #define MSG_PEEK 0x2 /* peek at incoming message */
448 #define MSG_DONTROUTE 0x4 /* send without using routing tables */
449 #define MSG_EOR 0x8 /* data completes record */
450 #define MSG_TRUNC 0x10 /* data discarded before delivery */
451 #define MSG_CTRUNC 0x20 /* control data lost before delivery */
452 #define MSG_WAITALL 0x40 /* wait for full request or error */
453 #define MSG_NOTIFICATION 0x2000 /* SCTP notification */
454 #if __BSD_VISIBLE
455 #define MSG_DONTWAIT 0x80 /* this message should be nonblocking */
456 #define MSG_EOF 0x100 /* data completes connection */
457 #define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */
458 #define MSG_COMPAT 0x8000 /* used in sendit() */
459 #endif
460 #ifdef _KERNEL
461 #define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */
462 #endif
463 #if __BSD_VISIBLE
464 #define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */
465 #endif
466
467 /*
468 * Header for ancillary data objects in msg_control buffer.
469 * Used for additional information with/about a datagram
470 * not expressible by flags. The format is a sequence
471 * of message elements headed by cmsghdr structures.
472 */
473 struct cmsghdr {
474 socklen_t cmsg_len; /* data byte count, including hdr */
475 int cmsg_level; /* originating protocol */
476 int cmsg_type; /* protocol-specific type */
477 /* followed by u_char cmsg_data[]; */
478 };
479
480 #if __BSD_VISIBLE
481 /*
482 * While we may have more groups than this, the cmsgcred struct must
483 * be able to fit in an mbuf, and NGROUPS_MAX is too large to allow
484 * this.
485 */
486 #define CMGROUP_MAX 16
487
488 /*
489 * Credentials structure, used to verify the identity of a peer
490 * process that has sent us a message. This is allocated by the
491 * peer process but filled in by the kernel. This prevents the
492 * peer from lying about its identity. (Note that cmcred_groups[0]
493 * is the effective GID.)
494 */
495 struct cmsgcred {
496 pid_t cmcred_pid; /* PID of sending process */
497 uid_t cmcred_uid; /* real UID of sending process */
498 uid_t cmcred_euid; /* effective UID of sending process */
499 gid_t cmcred_gid; /* real GID of sending process */
500 short cmcred_ngroups; /* number or groups */
501 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */
502 };
503
504 /*
505 * Socket credentials.
506 */
507 struct sockcred {
508 uid_t sc_uid; /* real user id */
509 uid_t sc_euid; /* effective user id */
510 gid_t sc_gid; /* real group id */
511 gid_t sc_egid; /* effective group id */
512 int sc_ngroups; /* number of supplemental groups */
513 gid_t sc_groups[1]; /* variable length */
514 };
515
516 /*
517 * Compute size of a sockcred structure with groups.
518 */
519 #define SOCKCREDSIZE(ngrps) \
520 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))
521
522 #endif /* __BSD_VISIBLE */
523
524 /* given pointer to struct cmsghdr, return pointer to data */
525 #define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \
526 _ALIGN(sizeof(struct cmsghdr)))
527
528 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
529 #define CMSG_NXTHDR(mhdr, cmsg) \
530 ((char *)(cmsg) == NULL ? CMSG_FIRSTHDR(mhdr) : \
531 ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \
532 _ALIGN(sizeof(struct cmsghdr)) > \
533 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \
534 (struct cmsghdr *)0 : \
535 (struct cmsghdr *)((char *)(cmsg) + \
536 _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len)))
537
538 /*
539 * RFC 2292 requires to check msg_controllen, in case that the kernel returns
540 * an empty list for some reasons.
541 */
542 #define CMSG_FIRSTHDR(mhdr) \
543 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
544 (struct cmsghdr *)(mhdr)->msg_control : \
545 (struct cmsghdr *)NULL)
546
547 #if __BSD_VISIBLE
548 /* RFC 2292 additions */
549 #define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l))
550 #define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l))
551 #endif
552
553 #ifdef _KERNEL
554 #define CMSG_ALIGN(n) _ALIGN(n)
555 #endif
556
557 /* "Socket"-level control message types: */
558 #define SCM_RIGHTS 0x01 /* access rights (array of int) */
559 #if __BSD_VISIBLE
560 #define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */
561 #define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */
562 #define SCM_BINTIME 0x04 /* timestamp (struct bintime) */
563 #endif
564
565 #if __BSD_VISIBLE
566 /*
567 * 4.3 compat sockaddr, move to compat file later
568 */
569 struct osockaddr {
570 unsigned short sa_family; /* address family */
571 char sa_data[14]; /* up to 14 bytes of direct address */
572 };
573
574 /*
575 * 4.3-compat message header (move to compat file later).
576 */
577 struct omsghdr {
578 char *msg_name; /* optional address */
579 int msg_namelen; /* size of address */
580 struct iovec *msg_iov; /* scatter/gather array */
581 int msg_iovlen; /* # elements in msg_iov */
582 char *msg_accrights; /* access rights sent/received */
583 int msg_accrightslen;
584 };
585 #endif
586
587 /*
588 * howto arguments for shutdown(2), specified by Posix.1g.
589 */
590 #define SHUT_RD 0 /* shut down the reading side */
591 #define SHUT_WR 1 /* shut down the writing side */
592 #define SHUT_RDWR 2 /* shut down both sides */
593
594 #if __BSD_VISIBLE
595 /*
596 * sendfile(2) header/trailer struct
597 */
598 struct sf_hdtr {
599 struct iovec *headers; /* pointer to an array of header struct iovec's */
600 int hdr_cnt; /* number of header iovec's */
601 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */
602 int trl_cnt; /* number of trailer iovec's */
603 };
604
605 /*
606 * Sendfile-specific flag(s)
607 */
608 #define SF_NODISKIO 0x00000001
609 #define SF_MNOWAIT 0x00000002
610 #endif
611
612 #ifndef _KERNEL
613
614 #include <sys/cdefs.h>
615
616 __BEGIN_DECLS
617 int accept(int, struct sockaddr * __restrict, socklen_t * __restrict);
618 int bind(int, const struct sockaddr *, socklen_t);
619 int connect(int, const struct sockaddr *, socklen_t);
620 int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict);
621 int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict);
622 int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict);
623 int listen(int, int);
624 ssize_t recv(int, void *, size_t, int);
625 ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict);
626 ssize_t recvmsg(int, struct msghdr *, int);
627 ssize_t send(int, const void *, size_t, int);
628 ssize_t sendto(int, const void *,
629 size_t, int, const struct sockaddr *, socklen_t);
630 ssize_t sendmsg(int, const struct msghdr *, int);
631 #if __BSD_VISIBLE
632 int sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int);
633 #endif
634 int setsockopt(int, int, int, const void *, socklen_t);
635 int shutdown(int, int);
636 int sockatmark(int);
637 int socket(int, int, int);
638 int socketpair(int, int, int, int *);
639 __END_DECLS
640
641 #endif /* !_KERNEL */
642
643 #endif /* !_SYS_SOCKET_H_ */
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