FreeBSD/Linux Kernel Cross Reference
sys/sys/socket.h
1 /* $NetBSD: socket.h,v 1.82 2006/06/27 03:49:08 mrg Exp $ */
2
3 /*
4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
15 * 3. Neither the name of the project nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
34 * The Regents of the University of California. All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 * @(#)socket.h 8.6 (Berkeley) 5/3/95
61 */
62
63 #ifndef _SYS_SOCKET_H_
64 #define _SYS_SOCKET_H_
65
66 #include <sys/featuretest.h>
67
68 /*
69 * Definitions related to sockets: types, address families, options.
70 */
71
72 /*
73 * Data types.
74 */
75 #include <sys/ansi.h>
76
77 #ifndef sa_family_t
78 typedef __sa_family_t sa_family_t;
79 #define sa_family_t __sa_family_t
80 #endif
81
82 #ifndef socklen_t
83 typedef __socklen_t socklen_t;
84 #define socklen_t __socklen_t
85 #endif
86
87 #include <machine/ansi.h>
88
89 #ifdef _BSD_SIZE_T_
90 typedef _BSD_SIZE_T_ size_t;
91 #undef _BSD_SIZE_T_
92 #endif
93
94 #ifdef _BSD_SSIZE_T_
95 typedef _BSD_SSIZE_T_ ssize_t;
96 #undef _BSD_SSIZE_T_
97 #endif
98
99 #include <sys/uio.h>
100
101 /*
102 * Socket types.
103 */
104 #define SOCK_STREAM 1 /* stream socket */
105 #define SOCK_DGRAM 2 /* datagram socket */
106 #define SOCK_RAW 3 /* raw-protocol interface */
107 #define SOCK_RDM 4 /* reliably-delivered message */
108 #define SOCK_SEQPACKET 5 /* sequenced packet stream */
109
110 /*
111 * Option flags per-socket.
112 */
113 #define SO_DEBUG 0x0001 /* turn on debugging info recording */
114 #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
115 #define SO_REUSEADDR 0x0004 /* allow local address reuse */
116 #define SO_KEEPALIVE 0x0008 /* keep connections alive */
117 #define SO_DONTROUTE 0x0010 /* just use interface addresses */
118 #define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
119 #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
120 #define SO_LINGER 0x0080 /* linger on close if data present */
121 #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
122 #define SO_REUSEPORT 0x0200 /* allow local address & port reuse */
123 #define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */
124
125
126 /*
127 * Additional options, not kept in so_options.
128 */
129 #define SO_SNDBUF 0x1001 /* send buffer size */
130 #define SO_RCVBUF 0x1002 /* receive buffer size */
131 #define SO_SNDLOWAT 0x1003 /* send low-water mark */
132 #define SO_RCVLOWAT 0x1004 /* receive low-water mark */
133 #define SO_SNDTIMEO 0x1005 /* send timeout */
134 #define SO_RCVTIMEO 0x1006 /* receive timeout */
135 #define SO_ERROR 0x1007 /* get error status and clear */
136 #define SO_TYPE 0x1008 /* get socket type */
137 #define SO_OVERFLOWED 0x1009 /* datagrams: return packets dropped */
138
139 /*
140 * Structure used for manipulating linger option.
141 */
142 struct linger {
143 int l_onoff; /* option on/off */
144 int l_linger; /* linger time in seconds */
145 };
146
147 /*
148 * Level number for (get/set)sockopt() to apply to socket itself.
149 */
150 #define SOL_SOCKET 0xffff /* options for socket level */
151
152 /*
153 * Address families.
154 */
155 #define AF_UNSPEC 0 /* unspecified */
156 #define AF_LOCAL 1 /* local to host (pipes, portals) */
157 #define AF_UNIX AF_LOCAL /* backward compatibility */
158 #define AF_INET 2 /* internetwork: UDP, TCP, etc. */
159 #define AF_IMPLINK 3 /* arpanet imp addresses */
160 #define AF_PUP 4 /* pup protocols: e.g. BSP */
161 #define AF_CHAOS 5 /* mit CHAOS protocols */
162 #define AF_NS 6 /* XEROX NS protocols */
163 #define AF_ISO 7 /* ISO protocols */
164 #define AF_OSI AF_ISO
165 #define AF_ECMA 8 /* european computer manufacturers */
166 #define AF_DATAKIT 9 /* datakit protocols */
167 #define AF_CCITT 10 /* CCITT protocols, X.25 etc */
168 #define AF_SNA 11 /* IBM SNA */
169 #define AF_DECnet 12 /* DECnet */
170 #define AF_DLI 13 /* DEC Direct data link interface */
171 #define AF_LAT 14 /* LAT */
172 #define AF_HYLINK 15 /* NSC Hyperchannel */
173 #define AF_APPLETALK 16 /* Apple Talk */
174 #define AF_ROUTE 17 /* Internal Routing Protocol */
175 #define AF_LINK 18 /* Link layer interface */
176 #if defined(_NETBSD_SOURCE)
177 #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */
178 #endif
179 #define AF_COIP 20 /* connection-oriented IP, aka ST II */
180 #define AF_CNT 21 /* Computer Network Technology */
181 #if defined(_NETBSD_SOURCE)
182 #define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */
183 #endif
184 #define AF_IPX 23 /* Novell Internet Protocol */
185 #define AF_INET6 24 /* IP version 6 */
186 #if defined(_NETBSD_SOURCE)
187 #define pseudo_AF_PIP 25 /* Help Identify PIP packets */
188 #endif
189 #define AF_ISDN 26 /* Integrated Services Digital Network*/
190 #define AF_E164 AF_ISDN /* CCITT E.164 recommendation */
191 #define AF_NATM 27 /* native ATM access */
192 #define AF_ARP 28 /* (rev.) addr. res. prot. (RFC 826) */
193 #if defined(_NETBSD_SOURCE)
194 #define pseudo_AF_KEY 29 /* Internal key management protocol */
195 #define pseudo_AF_HDRCMPLT 30 /* Used by BPF to not rewrite hdrs
196 in interface output routine */
197 #endif
198 #define AF_BLUETOOTH 31
199
200 #define AF_MAX 32
201
202 /*
203 * Structure used by kernel to store most
204 * addresses.
205 */
206 struct sockaddr {
207 __uint8_t sa_len; /* total length */
208 sa_family_t sa_family; /* address family */
209 char sa_data[14]; /* actually longer; address value */
210 };
211
212 #if defined(_KERNEL)
213 /*
214 * Structure used by kernel to pass protocol
215 * information in raw sockets.
216 */
217 struct sockproto {
218 u_short sp_family; /* address family */
219 u_short sp_protocol; /* protocol */
220 };
221 #endif /* _KERNEL */
222
223 #if 1
224 /*
225 * RFC 2553: protocol-independent placeholder for socket addresses
226 */
227 #define _SS_MAXSIZE 128
228 #define _SS_ALIGNSIZE (sizeof(__int64_t))
229 #define _SS_PAD1SIZE (_SS_ALIGNSIZE - 2)
230 #define _SS_PAD2SIZE (_SS_MAXSIZE - 2 - \
231 _SS_PAD1SIZE - _SS_ALIGNSIZE)
232
233 #if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
234 struct sockaddr_storage {
235 __uint8_t ss_len; /* address length */
236 sa_family_t ss_family; /* address family */
237 char __ss_pad1[_SS_PAD1SIZE];
238 __int64_t __ss_align;/* force desired structure storage alignment */
239 char __ss_pad2[_SS_PAD2SIZE];
240 };
241 #endif /* _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
242 #endif /* 1 */
243
244 /*
245 * Protocol families, same as address families for now.
246 */
247 #define PF_UNSPEC AF_UNSPEC
248 #define PF_LOCAL AF_LOCAL
249 #define PF_UNIX PF_LOCAL /* backward compatibility */
250 #define PF_INET AF_INET
251 #define PF_IMPLINK AF_IMPLINK
252 #define PF_PUP AF_PUP
253 #define PF_CHAOS AF_CHAOS
254 #define PF_NS AF_NS
255 #define PF_ISO AF_ISO
256 #define PF_OSI AF_ISO
257 #define PF_ECMA AF_ECMA
258 #define PF_DATAKIT AF_DATAKIT
259 #define PF_CCITT AF_CCITT
260 #define PF_SNA AF_SNA
261 #define PF_DECnet AF_DECnet
262 #define PF_DLI AF_DLI
263 #define PF_LAT AF_LAT
264 #define PF_HYLINK AF_HYLINK
265 #define PF_APPLETALK AF_APPLETALK
266 #define PF_ROUTE AF_ROUTE
267 #define PF_LINK AF_LINK
268 #if defined(_NETBSD_SOURCE)
269 #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */
270 #endif
271 #define PF_COIP AF_COIP
272 #define PF_CNT AF_CNT
273 #define PF_INET6 AF_INET6
274 #define PF_IPX AF_IPX /* same format as AF_NS */
275 #if defined(_NETBSD_SOURCE)
276 #define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */
277 #define PF_PIP pseudo_AF_PIP
278 #endif
279 #define PF_ISDN AF_ISDN /* same as E164 */
280 #define PF_E164 AF_E164
281 #define PF_NATM AF_NATM
282 #define PF_ARP AF_ARP
283 #if defined(_NETBSD_SOURCE)
284 #define PF_KEY pseudo_AF_KEY /* like PF_ROUTE, only for key mgmt */
285 #endif
286 #define PF_BLUETOOTH AF_BLUETOOTH
287
288 #define PF_MAX AF_MAX
289
290 #if defined(_NETBSD_SOURCE)
291
292 #ifndef gid_t
293 typedef __gid_t gid_t; /* group id */
294 #define gid_t __gid_t
295 #endif
296
297 #ifndef uid_t
298 typedef __uid_t uid_t; /* user id */
299 #define uid_t __uid_t
300 #endif
301
302 /*
303 * Socket credentials.
304 */
305 struct sockcred {
306 uid_t sc_uid; /* real user id */
307 uid_t sc_euid; /* effective user id */
308 gid_t sc_gid; /* real group id */
309 gid_t sc_egid; /* effective group id */
310 int sc_ngroups; /* number of supplemental groups */
311 gid_t sc_groups[1]; /* variable length */
312 };
313
314 /*
315 * Compute size of a sockcred structure with groups.
316 */
317 #define SOCKCREDSIZE(ngrps) \
318 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))
319 #endif /* _NETBSD_SOURCE */
320
321
322 #if defined(_NETBSD_SOURCE)
323 /*
324 * Definitions for network related sysctl, CTL_NET.
325 *
326 * Second level is protocol family.
327 * Third level is protocol number.
328 *
329 * Further levels are defined by the individual families below.
330 */
331 #define NET_MAXID AF_MAX
332
333 #define CTL_NET_NAMES { \
334 { 0, 0 }, \
335 { "local", CTLTYPE_NODE }, \
336 { "inet", CTLTYPE_NODE }, \
337 { "implink", CTLTYPE_NODE }, \
338 { "pup", CTLTYPE_NODE }, \
339 { "chaos", CTLTYPE_NODE }, \
340 { "xerox_ns", CTLTYPE_NODE }, \
341 { "iso", CTLTYPE_NODE }, \
342 { "emca", CTLTYPE_NODE }, \
343 { "datakit", CTLTYPE_NODE }, \
344 { "ccitt", CTLTYPE_NODE }, \
345 { "ibm_sna", CTLTYPE_NODE }, \
346 { "decnet", CTLTYPE_NODE }, \
347 { "dec_dli", CTLTYPE_NODE }, \
348 { "lat", CTLTYPE_NODE }, \
349 { "hylink", CTLTYPE_NODE }, \
350 { "appletalk", CTLTYPE_NODE }, \
351 { "route", CTLTYPE_NODE }, \
352 { "link_layer", CTLTYPE_NODE }, \
353 { "xtp", CTLTYPE_NODE }, \
354 { "coip", CTLTYPE_NODE }, \
355 { "cnt", CTLTYPE_NODE }, \
356 { "rtip", CTLTYPE_NODE }, \
357 { "ipx", CTLTYPE_NODE }, \
358 { "inet6", CTLTYPE_NODE }, \
359 { "pip", CTLTYPE_NODE }, \
360 { "isdn", CTLTYPE_NODE }, \
361 { "natm", CTLTYPE_NODE }, \
362 { "arp", CTLTYPE_NODE }, \
363 { "key", CTLTYPE_NODE }, \
364 }
365
366 struct kinfo_pcb {
367 __uint64_t ki_pcbaddr; /* PTR: pcb addr */
368 __uint64_t ki_ppcbaddr; /* PTR: ppcb addr */
369 __uint64_t ki_sockaddr; /* PTR: socket addr */
370
371 __uint32_t ki_family; /* INT: protocol family */
372 __uint32_t ki_type; /* INT: socket type */
373 __uint32_t ki_protocol; /* INT: protocol */
374 __uint32_t ki_pflags; /* INT: generic protocol flags */
375
376 __uint32_t ki_sostate; /* INT: socket state */
377 __uint32_t ki_prstate; /* INT: protocol state */
378 __int32_t ki_tstate; /* INT: tcp state */
379 __uint32_t ki_tflags; /* INT: tcp flags */
380
381 __uint64_t ki_rcvq; /* U_LONG: receive queue len */
382 __uint64_t ki_sndq; /* U_LONG: send queue len */
383
384 union {
385 struct sockaddr _kis_src; /* STRUCT: local address */
386 char _kis_pad[256 + 8]; /* pad to max addr length */
387 } ki_s;
388 union {
389 struct sockaddr _kid_dst; /* STRUCT: remote address */
390 char _kid_pad[256 + 8]; /* pad to max addr length */
391 } ki_d;
392
393 __uint64_t ki_inode; /* INO_T: fake inode number */
394 __uint64_t ki_vnode; /* PTR: if associated with file */
395 __uint64_t ki_conn; /* PTR: control block of peer */
396 __uint64_t ki_refs; /* PTR: referencing socket */
397 __uint64_t ki_nextref; /* PTR: link in refs list */
398 };
399
400 #define ki_src ki_s._kis_src
401 #define ki_dst ki_d._kid_dst
402
403 #define PCB_SLOP 20
404 #define PCB_ALL 0
405
406 #endif /* _NETBSD_SOURCE */
407
408 #if defined(_NETBSD_SOURCE)
409 /*
410 * PF_ROUTE - Routing table
411 *
412 * Three additional levels are defined:
413 * Fourth: address family, 0 is wildcard
414 * Fifth: type of info, defined below
415 * Sixth: flag(s) to mask with for NET_RT_FLAGS
416 */
417 #define NET_RT_DUMP 1 /* dump; may limit to a.f. */
418 #define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */
419 #define NET_RT_OIFLIST 3 /* old NET_RT_IFLIST (pre 1.5) */
420 #define NET_RT_IFLIST 4 /* survey interface list */
421 #define NET_RT_MAXID 5
422
423 #define CTL_NET_RT_NAMES { \
424 { 0, 0 }, \
425 { "dump", CTLTYPE_STRUCT }, \
426 { "flags", CTLTYPE_STRUCT }, \
427 { 0, 0 }, \
428 { "iflist", CTLTYPE_STRUCT }, \
429 }
430 #endif /* _NETBSD_SOURCE */
431
432 /*
433 * Maximum queue length specifiable by listen(2).
434 */
435 #ifndef SOMAXCONN
436 #define SOMAXCONN 128
437 #endif
438
439 /*
440 * Message header for recvmsg and sendmsg calls.
441 * Used value-result for recvmsg, value only for sendmsg.
442 */
443 struct msghdr {
444 void *msg_name; /* optional address */
445 socklen_t msg_namelen; /* size of address */
446 struct iovec *msg_iov; /* scatter/gather array */
447 int msg_iovlen; /* # elements in msg_iov */
448 void *msg_control; /* ancillary data, see below */
449 socklen_t msg_controllen; /* ancillary data buffer len */
450 int msg_flags; /* flags on received message */
451 };
452
453 #define MSG_OOB 0x0001 /* process out-of-band data */
454 #define MSG_PEEK 0x0002 /* peek at incoming message */
455 #define MSG_DONTROUTE 0x0004 /* send without using routing tables */
456 #define MSG_EOR 0x0008 /* data completes record */
457 #define MSG_TRUNC 0x0010 /* data discarded before delivery */
458 #define MSG_CTRUNC 0x0020 /* control data lost before delivery */
459 #define MSG_WAITALL 0x0040 /* wait for full request or error */
460 #define MSG_DONTWAIT 0x0080 /* this message should be nonblocking */
461 #define MSG_BCAST 0x0100 /* this message was rcvd using link-level brdcst */
462 #define MSG_MCAST 0x0200 /* this message was rcvd using link-level mcast */
463 #define MSG_NOSIGNAL 0x0400 /* do not generate SIGPIPE on EOF */
464
465 /*
466 * Header for ancillary data objects in msg_control buffer.
467 * Used for additional information with/about a datagram
468 * not expressible by flags. The format is a sequence
469 * of message elements headed by cmsghdr structures.
470 */
471 struct cmsghdr {
472 socklen_t cmsg_len; /* data byte count, including hdr */
473 int cmsg_level; /* originating protocol */
474 int cmsg_type; /* protocol-specific type */
475 /* followed by u_char cmsg_data[]; */
476 };
477
478 /* given pointer to struct cmsghdr, return pointer to data */
479 #define CMSG_DATA(cmsg) \
480 ((u_char *)(void *)(cmsg) + __CMSG_ALIGN(sizeof(struct cmsghdr)))
481 #define CCMSG_DATA(cmsg) \
482 ((const u_char *)(const void *)(cmsg) + \
483 __CMSG_ALIGN(sizeof(struct cmsghdr)))
484
485 /*
486 * Alignment requirement for CMSG struct manipulation.
487 * This basically behaves the same as ALIGN() ARCH/include/param.h.
488 * We declare it separately for two reasons:
489 * (1) avoid dependency between machine/param.h, and (2) to sync with kernel's
490 * idea of ALIGNBYTES at runtime.
491 * without (2), we can't guarantee binary compatibility in case of future
492 * changes in ALIGNBYTES.
493 */
494 #define __CMSG_ALIGN(n) (((n) + __cmsg_alignbytes()) & ~__cmsg_alignbytes())
495 #ifdef _KERNEL
496 #define CMSG_ALIGN(n) __CMSG_ALIGN(n)
497 #endif
498
499 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
500 #define CMSG_NXTHDR(mhdr, cmsg) \
501 (((__caddr_t)(cmsg) + __CMSG_ALIGN((cmsg)->cmsg_len) + \
502 __CMSG_ALIGN(sizeof(struct cmsghdr)) > \
503 (((__caddr_t)(mhdr)->msg_control) + (mhdr)->msg_controllen)) ? \
504 (struct cmsghdr *)0 : \
505 (struct cmsghdr *)((__caddr_t)(cmsg) + \
506 __CMSG_ALIGN((cmsg)->cmsg_len)))
507
508 /*
509 * RFC 2292 requires to check msg_controllen, in case that the kernel returns
510 * an empty list for some reasons.
511 */
512 #define CMSG_FIRSTHDR(mhdr) \
513 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
514 (struct cmsghdr *)(mhdr)->msg_control : \
515 (struct cmsghdr *)0)
516
517 #define CMSG_SPACE(l) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + __CMSG_ALIGN(l))
518 #define CMSG_LEN(l) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + (l))
519
520 /* "Socket"-level control message types: */
521 #define SCM_RIGHTS 0x01 /* access rights (array of int) */
522 #if defined(_NETBSD_SOURCE)
523 #define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */
524 #define SCM_CREDS 0x04 /* credentials (struct sockcred) */
525 #endif
526
527 /*
528 * Types of socket shutdown(2).
529 */
530 #define SHUT_RD 0 /* Disallow further receives. */
531 #define SHUT_WR 1 /* Disallow further sends. */
532 #define SHUT_RDWR 2 /* Disallow further sends/receives. */
533
534 #include <sys/cdefs.h>
535
536 __BEGIN_DECLS
537 int __cmsg_alignbytes(void);
538 __END_DECLS
539
540 #ifndef _KERNEL
541
542 __BEGIN_DECLS
543 int accept(int, struct sockaddr * __restrict, socklen_t * __restrict);
544 int bind(int, const struct sockaddr *, socklen_t);
545 int connect(int, const struct sockaddr *, socklen_t);
546 int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict);
547 int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict);
548 int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict);
549 int listen(int, int);
550 ssize_t recv(int, void *, size_t, int);
551 ssize_t recvfrom(int, void * __restrict, size_t, int,
552 struct sockaddr * __restrict, socklen_t * __restrict);
553 ssize_t recvmsg(int, struct msghdr *, int);
554 ssize_t send(int, const void *, size_t, int);
555 ssize_t sendto(int, const void *,
556 size_t, int, const struct sockaddr *, socklen_t);
557 ssize_t sendmsg(int, const struct msghdr *, int);
558 int setsockopt(int, int, int, const void *, socklen_t);
559 int shutdown(int, int);
560 int sockatmark(int);
561 int socket(int, int, int)
562 #if !defined(__LIBC12_SOURCE__) && !defined(_STANDALONE)
563 __RENAME(__socket30)
564 #endif
565 ;
566 int socketpair(int, int, int, int *);
567 __END_DECLS
568 #endif /* !_KERNEL */
569
570 #endif /* !_SYS_SOCKET_H_ */
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