1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
23 *
24 * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
25 */
26
27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40 /* Copyright (c) 2013, OmniTI Computer Consulting, Inc. All rights reserved. */
41
42 #ifndef _SYS_SOCKET_H
43 #define _SYS_SOCKET_H
44
45 #include <sys/types.h>
46 #include <sys/uio.h>
47 #include <sys/feature_tests.h>
48 #include <sys/socket_impl.h>
49 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
50 #ifndef _KERNEL
51 #include <sys/netconfig.h>
52 #endif /* !_KERNEL */
53 #include <netinet/in.h>
54 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
55
56 #ifdef __cplusplus
57 extern "C" {
58 #endif
59
60 #ifndef _SOCKLEN_T
61 #define _SOCKLEN_T
62
63 /*
64 * The socklen definitions are reproduced in netinet/in.h for the inet6_
65 * functions. Exposing all of sys/socket.h via netinet/in.h breaks existing
66 * applications and is not required by austin.
67 */
68 #if defined(_XPG4_2) && !defined(_XPG5) && !defined(_LP64)
69 typedef size_t socklen_t;
70 #else
71 typedef uint32_t socklen_t;
72 #endif /* defined(_XPG4_2) && !defined(_XPG5) && !defined(_LP64) */
73
74 #if defined(_XPG4_2) || defined(_BOOT)
75 typedef socklen_t *_RESTRICT_KYWD Psocklen_t;
76 #else
77 typedef void *_RESTRICT_KYWD Psocklen_t;
78 #endif /* defined(_XPG4_2) || defined(_BOOT) */
79
80 #endif /* _SOCKLEN_T */
81
82 /*
83 * Definitions related to sockets: types, address families, options.
84 */
85 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
86 #ifndef NC_TPI_CLTS
87 #define NC_TPI_CLTS 1 /* must agree with netconfig.h */
88 #define NC_TPI_COTS 2 /* must agree with netconfig.h */
89 #define NC_TPI_COTS_ORD 3 /* must agree with netconfig.h */
90 #define NC_TPI_RAW 4 /* must agree with netconfig.h */
91 #endif /* !NC_TPI_CLTS */
92 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
93
94 /*
95 * Types
96 */
97 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
98 #define SOCK_STREAM NC_TPI_COTS /* stream socket */
99 #define SOCK_DGRAM NC_TPI_CLTS /* datagram socket */
100 #define SOCK_RAW NC_TPI_RAW /* raw-protocol interface */
101 #else
102 #define SOCK_STREAM 2 /* stream socket */
103 #define SOCK_DGRAM 1 /* datagram socket */
104 #define SOCK_RAW 4 /* raw-protocol interface */
105 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
106 #define SOCK_RDM 5 /* reliably-delivered message */
107 #define SOCK_SEQPACKET 6 /* sequenced packet stream */
108 #define SOCK_TYPE_MASK 0xffff /* type reside in these bits only */
109
110 /*
111 * Flags for socket() and accept4()
112 */
113 #define SOCK_CLOEXEC 0x080000 /* like open(2) O_CLOEXEC for socket */
114 #define SOCK_NONBLOCK 0x100000 /* like O_NONBLOCK */
115 #define SOCK_NDELAY 0x200000 /* like O_NDELAY */
116
117 /*
118 * Option flags per-socket.
119 */
120 #define SO_DEBUG 0x0001 /* turn on debugging info recording */
121 #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
122 #define SO_REUSEADDR 0x0004 /* allow local address reuse */
123 #define SO_KEEPALIVE 0x0008 /* keep connections alive */
124 #define SO_DONTROUTE 0x0010 /* just use interface addresses */
125 #define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
126 #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
127 #define SO_LINGER 0x0080 /* linger on close if data present */
128 #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
129 #define SO_DGRAM_ERRIND 0x0200 /* Application wants delayed error */
130 #define SO_RECVUCRED 0x0400 /* Application wants ucred of sender */
131
132 /*
133 * Socket options are passed using a signed integer, but it is also rare
134 * for more than one to ever be passed at the same time with setsockopt
135 * and only one at a time can be retrieved with getsockopt.
136 *
137 * Since the lower numbers cannot be renumbered for compatibility reasons,
138 * it would seem that we need to start a new number space (0x40000000 -
139 * 0x7fffffff) for those that don't need to be stored as a bit flag
140 * somewhere. This limits the flag options to 30 but that seems to be
141 * plenty, anyway. 0x40000000 is reserved for future use.
142 */
143 #define SO_ATTACH_FILTER 0x40000001
144 #define SO_DETACH_FILTER 0x40000002
145
146 #ifdef _KERNEL
147 #define SO_SND_COPYAVOID 0x0800 /* Internal: use zero-copy */
148 #define SO_SND_BUFINFO 0x1000 /* Internal: get buffer info */
149 /* when doing zero-copy */
150
151 struct so_snd_bufinfo {
152 ushort_t sbi_wroff; /* Write offset */
153 ssize_t sbi_maxblk; /* Max size of a single mblk */
154 ssize_t sbi_maxpsz; /* Max total size of a mblk chain */
155 ushort_t sbi_tail; /* Extra space available at the end */
156 };
157 #endif /* _KERNEL */
158
159 /*
160 * N.B.: The following definition is present only for compatibility
161 * with release 3.0. It will disappear in later releases.
162 */
163 #define SO_DONTLINGER (~SO_LINGER) /* ~SO_LINGER */
164
165 /*
166 * Additional options, not kept in so_options.
167 */
168 #define SO_SNDBUF 0x1001 /* send buffer size */
169 #define SO_RCVBUF 0x1002 /* receive buffer size */
170 #define SO_SNDLOWAT 0x1003 /* send low-water mark */
171 #define SO_RCVLOWAT 0x1004 /* receive low-water mark */
172 #define SO_SNDTIMEO 0x1005 /* send timeout */
173 #define SO_RCVTIMEO 0x1006 /* receive timeout */
174 #define SO_ERROR 0x1007 /* get error status and clear */
175 #define SO_TYPE 0x1008 /* get socket type */
176 #define SO_PROTOTYPE 0x1009 /* get/set protocol type */
177 #define SO_ANON_MLP 0x100a /* create MLP on anonymous bind */
178 #define SO_MAC_EXEMPT 0x100b /* allow dominated unlabeled peers */
179 #define SO_DOMAIN 0x100c /* get socket domain */
180 #define SO_RCVPSH 0x100d /* receive interval to push data */
181
182 /* "Socket"-level control message types: */
183 #define SCM_RIGHTS 0x1010 /* access rights (array of int) */
184 #define SO_SECATTR 0x1011 /* socket's security attributes */
185 #define SCM_UCRED 0x1012 /* sender's ucred */
186 #define SO_TIMESTAMP 0x1013 /* socket-level timestamp option */
187 #define SCM_TIMESTAMP SO_TIMESTAMP /* socket control message timestamp */
188 #define SO_ALLZONES 0x1014 /* bind in all zones */
189 #define SO_EXCLBIND 0x1015 /* exclusive binding */
190 #define SO_MAC_IMPLICIT 0x1016 /* hide mac labels on wire */
191 #define SO_VRRP 0x1017 /* VRRP control socket */
192
193 #ifdef _KERNEL
194 #define SO_SRCADDR 0x2001 /* Internal: AF_UNIX source address */
195 #define SO_FILEP 0x2002 /* Internal: AF_UNIX file pointer */
196 #define SO_UNIX_CLOSE 0x2003 /* Internal: AF_UNIX peer closed */
197 #endif /* _KERNEL */
198
199 /*
200 * Socket filter options
201 */
202 #define FIL_ATTACH 0x1 /* attach filter */
203 #define FIL_DETACH 0x2 /* detach filter */
204 #define FIL_LIST 0x3 /* list attached filters */
205
206 #define FILNAME_MAX 32
207 /*
208 * Structure returned by FIL_LIST
209 */
210 struct fil_info {
211 int fi_flags; /* see below (FILF_*) */
212 int fi_pos; /* position (0 is bottom) */
213 char fi_name[FILNAME_MAX]; /* filter name */
214 };
215
216 #define FILF_PROG 0x1 /* programmatic attach */
217 #define FILF_AUTO 0x2 /* automatic attach */
218 #define FILF_BYPASS 0x4 /* filter is not active */
219
220 #ifdef _KERNEL
221 /*
222 * new socket open flags to identify socket and acceptor streams
223 */
224 #define SO_ACCEPTOR 0x20000 /* acceptor socket */
225 #define SO_SOCKSTR 0x40000 /* normal socket stream */
226 #define SO_FALLBACK 0x80000 /* fallback to TPI socket */
227
228 /*
229 * Flags for socket_create() and socket_newconn()
230 */
231 #define SOCKET_SLEEP KM_SLEEP
232 #define SOCKET_NOSLEEP KM_NOSLEEP
233
234 #endif /* _KERNEL */
235
236 /*
237 * Structure used for manipulating linger option.
238 */
239 struct linger {
240 int l_onoff; /* option on/off */
241 int l_linger; /* linger time */
242 };
243
244 /*
245 * Levels for (get/set)sockopt() that don't apply to a specific protocol.
246 */
247 #define SOL_SOCKET 0xffff /* options for socket level */
248 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
249 #define SOL_ROUTE 0xfffe /* options for routing socket level */
250 #endif
251 #define SOL_PACKET 0xfffd /* options for packet level */
252 #define SOL_FILTER 0xfffc /* options for socket filter level */
253
254 /*
255 * Address families.
256 *
257 * Some of these constant names are copied for the DTrace IP provider in
258 * usr/src/lib/libdtrace/common/{ip.d.in, ip.sed.in}, which should be kept
259 * in sync.
260 */
261 #define AF_UNSPEC 0 /* unspecified */
262 #define AF_UNIX 1 /* local to host (pipes, portals) */
263 #define AF_LOCAL AF_UNIX /* Synonym for AF_UNIX */
264 #define AF_FILE AF_UNIX /* Synonym for AF_UNIX */
265 #define AF_INET 2 /* internetwork: UDP, TCP, etc. */
266 #define AF_IMPLINK 3 /* arpanet imp addresses */
267 #define AF_PUP 4 /* pup protocols: e.g. BSP */
268 #define AF_CHAOS 5 /* mit CHAOS protocols */
269 #define AF_NS 6 /* XEROX NS protocols */
270 #define AF_NBS 7 /* nbs protocols */
271 #define AF_ECMA 8 /* european computer manufacturers */
272 #define AF_DATAKIT 9 /* datakit protocols */
273 #define AF_CCITT 10 /* CCITT protocols, X.25 etc */
274 #define AF_SNA 11 /* IBM SNA */
275 #define AF_DECnet 12 /* DECnet */
276 #define AF_DLI 13 /* Direct data link interface */
277 #define AF_LAT 14 /* LAT */
278 #define AF_HYLINK 15 /* NSC Hyperchannel */
279 #define AF_APPLETALK 16 /* Apple Talk */
280 #define AF_NIT 17 /* Network Interface Tap */
281 #define AF_802 18 /* IEEE 802.2, also ISO 8802 */
282 #define AF_OSI 19 /* umbrella for all families used */
283 #define AF_X25 20 /* CCITT X.25 in particular */
284 #define AF_OSINET 21 /* AFI = 47, IDI = 4 */
285 #define AF_GOSIP 22 /* U.S. Government OSI */
286 #define AF_IPX 23 /* Novell Internet Protocol */
287 #define AF_ROUTE 24 /* Internal Routing Protocol */
288 #define AF_LINK 25 /* Link-layer interface */
289 #define AF_INET6 26 /* Internet Protocol, Version 6 */
290 #define AF_KEY 27 /* Security Association DB socket */
291 #define AF_NCA 28 /* NCA socket */
292 #define AF_POLICY 29 /* Security Policy DB socket */
293 #define AF_INET_OFFLOAD 30 /* Sun private; do not use */
294 #define AF_TRILL 31 /* TRILL interface */
295 #define AF_PACKET 32 /* PF_PACKET Linux socket interface */
296
297 #define AF_MAX 32
298
299 /*
300 * Protocol families, same as address families for now.
301 */
302 #define PF_UNSPEC AF_UNSPEC
303 #define PF_UNIX AF_UNIX
304 #define PF_LOCAL PF_UNIX
305 #define PF_FILE PF_UNIX
306 #define PF_INET AF_INET
307 #define PF_IMPLINK AF_IMPLINK
308 #define PF_PUP AF_PUP
309 #define PF_CHAOS AF_CHAOS
310 #define PF_NS AF_NS
311 #define PF_NBS AF_NBS
312 #define PF_ECMA AF_ECMA
313 #define PF_DATAKIT AF_DATAKIT
314 #define PF_CCITT AF_CCITT
315 #define PF_SNA AF_SNA
316 #define PF_DECnet AF_DECnet
317 #define PF_DLI AF_DLI
318 #define PF_LAT AF_LAT
319 #define PF_HYLINK AF_HYLINK
320 #define PF_APPLETALK AF_APPLETALK
321 #define PF_NIT AF_NIT
322 #define PF_802 AF_802
323 #define PF_OSI AF_OSI
324 #define PF_X25 AF_X25
325 #define PF_OSINET AF_OSINET
326 #define PF_GOSIP AF_GOSIP
327 #define PF_IPX AF_IPX
328 #define PF_ROUTE AF_ROUTE
329 #define PF_LINK AF_LINK
330 #define PF_INET6 AF_INET6
331 #define PF_KEY AF_KEY
332 #define PF_NCA AF_NCA
333 #define PF_POLICY AF_POLICY
334 #define PF_INET_OFFLOAD AF_INET_OFFLOAD /* Sun private; do not use */
335 #define PF_TRILL AF_TRILL
336 #define PF_PACKET AF_PACKET
337
338 #define PF_MAX AF_MAX
339
340 /*
341 * Maximum queue length specifiable by listen.
342 */
343 #define SOMAXCONN 128
344
345 /*
346 * Message header for recvmsg and sendmsg calls.
347 */
348 struct msghdr {
349 void *msg_name; /* optional address */
350 socklen_t msg_namelen; /* size of address */
351 struct iovec *msg_iov; /* scatter/gather array */
352 int msg_iovlen; /* # elements in msg_iov */
353
354 #if defined(_XPG4_2) || defined(_KERNEL)
355 void *msg_control; /* ancillary data */
356 socklen_t msg_controllen; /* ancillary data buffer len */
357 int msg_flags; /* flags on received message */
358 #else
359 caddr_t msg_accrights; /* access rights sent/received */
360 int msg_accrightslen;
361 #endif /* defined(_XPG4_2) || defined(_KERNEL) */
362 };
363
364 #if defined(_KERNEL)
365
366 /*
367 * N.B.: we assume that omsghdr and nmsghdr are isomorphic, with
368 * the sole exception that nmsghdr has the additional msg_flags
369 * field at the end.
370 */
371 struct omsghdr {
372 void *msg_name; /* optional address */
373 socklen_t msg_namelen; /* size of address */
374 struct iovec *msg_iov; /* scatter/gather array */
375 int msg_iovlen; /* # elements in msg_iov */
376 caddr_t msg_accrights; /* access rights sent/received */
377 int msg_accrightslen;
378 };
379
380 #define nmsghdr msghdr
381
382 #if defined(_SYSCALL32)
383
384 struct omsghdr32 {
385 caddr32_t msg_name; /* optional address */
386 uint32_t msg_namelen; /* size of address */
387 caddr32_t msg_iov; /* scatter/gather array */
388 int32_t msg_iovlen; /* # elements in msg_iov */
389 caddr32_t msg_accrights; /* access rights sent/received */
390 uint32_t msg_accrightslen;
391 };
392
393 struct msghdr32 {
394 caddr32_t msg_name; /* optional address */
395 uint32_t msg_namelen; /* size of address */
396 caddr32_t msg_iov; /* scatter/gather array */
397 int32_t msg_iovlen; /* # elements in msg_iov */
398 caddr32_t msg_control; /* ancillary data */
399 uint32_t msg_controllen; /* ancillary data buffer len */
400 int32_t msg_flags; /* flags on received message */
401 };
402
403 #define nmsghdr32 msghdr32
404
405 #endif /* _SYSCALL32 */
406 #endif /* _KERNEL */
407
408 #define MSG_OOB 0x1 /* process out-of-band data */
409 #define MSG_PEEK 0x2 /* peek at incoming message */
410 #define MSG_DONTROUTE 0x4 /* send without using routing tables */
411 /* Added for XPGv2 compliance */
412 #define MSG_EOR 0x8 /* Terminates a record */
413 #define MSG_CTRUNC 0x10 /* Control data truncated */
414 #define MSG_TRUNC 0x20 /* Normal data truncated */
415 #define MSG_WAITALL 0x40 /* Wait for complete recv or error */
416 #define MSG_DUPCTRL 0x800 /* Save control message for use with */
417 /* with left over data */
418 /* End of XPGv2 compliance */
419 #define MSG_DONTWAIT 0x80 /* Don't block for this recv */
420 #define MSG_NOTIFICATION 0x100 /* Notification, not data */
421 #define MSG_XPG4_2 0x8000 /* Private: XPG4.2 flag */
422
423 #define MSG_MAXIOVLEN 16
424
425 #ifdef _KERNEL
426
427 /*
428 * for kernel socket only
429 */
430 #define MSG_MBLK_QUICKRELE 0x10000000 /* free mblk chain */
431 /* in timely manner */
432 #define MSG_USERSPACE 0x20000000 /* buffer from user space */
433
434 #endif /* _KERNEL */
435
436
437 /* Added for XPGv2 compliance */
438 #define SHUT_RD 0
439 #define SHUT_WR 1
440 #define SHUT_RDWR 2
441
442 struct cmsghdr {
443 socklen_t cmsg_len; /* data byte count, including hdr */
444 int cmsg_level; /* originating protocol */
445 int cmsg_type; /* protocol-specific type */
446 };
447
448 #if defined(_XPG4_2) || defined(_KERNEL)
449 #if defined(__sparc)
450 /* To maintain backward compatibility, alignment needs to be 8 on sparc. */
451 #define _CMSG_HDR_ALIGNMENT 8
452 #else
453 /* for __i386 (and other future architectures) */
454 #define _CMSG_HDR_ALIGNMENT 4
455 #endif /* defined(__sparc) */
456 #endif /* defined(_XPG4_2) || defined(_KERNEL) */
457
458 #if defined(_XPG4_2)
459 /*
460 * The cmsg headers (and macros dealing with them) were made available as
461 * part of UNIX95 and hence need to be protected with a _XPG4_2 define.
462 */
463 #define _CMSG_DATA_ALIGNMENT (sizeof (int))
464 #define _CMSG_HDR_ALIGN(x) (((uintptr_t)(x) + _CMSG_HDR_ALIGNMENT - 1) & \
465 ~(_CMSG_HDR_ALIGNMENT - 1))
466 #define _CMSG_DATA_ALIGN(x) (((uintptr_t)(x) + _CMSG_DATA_ALIGNMENT - 1) & \
467 ~(_CMSG_DATA_ALIGNMENT - 1))
468 #define CMSG_DATA(c) \
469 ((unsigned char *)_CMSG_DATA_ALIGN((struct cmsghdr *)(c) + 1))
470
471 #define CMSG_FIRSTHDR(m) \
472 (((m)->msg_controllen < sizeof (struct cmsghdr)) ? \
473 (struct cmsghdr *)0 : (struct cmsghdr *)((m)->msg_control))
474
475 #define CMSG_NXTHDR(m, c) \
476 (((c) == 0) ? CMSG_FIRSTHDR(m) : \
477 ((((uintptr_t)_CMSG_HDR_ALIGN((char *)(c) + \
478 ((struct cmsghdr *)(c))->cmsg_len) + sizeof (struct cmsghdr)) > \
479 (((uintptr_t)((struct msghdr *)(m))->msg_control) + \
480 ((uintptr_t)((struct msghdr *)(m))->msg_controllen))) ? \
481 ((struct cmsghdr *)0) : \
482 ((struct cmsghdr *)_CMSG_HDR_ALIGN((char *)(c) + \
483 ((struct cmsghdr *)(c))->cmsg_len))))
484
485 /* Amount of space + padding needed for a message of length l */
486 #define CMSG_SPACE(l) \
487 ((unsigned int)_CMSG_HDR_ALIGN(sizeof (struct cmsghdr) + (l)))
488
489 /* Value to be used in cmsg_len, does not include trailing padding */
490 #define CMSG_LEN(l) \
491 ((unsigned int)_CMSG_DATA_ALIGN(sizeof (struct cmsghdr)) + (l))
492
493 #endif /* _XPG4_2 */
494
495 #ifdef _XPG4_2
496 #ifdef __PRAGMA_REDEFINE_EXTNAME
497 #pragma redefine_extname bind __xnet_bind
498 #pragma redefine_extname connect __xnet_connect
499 #pragma redefine_extname recvmsg __xnet_recvmsg
500 #pragma redefine_extname sendmsg __xnet_sendmsg
501 #pragma redefine_extname sendto __xnet_sendto
502 #pragma redefine_extname socket __xnet_socket
503 #pragma redefine_extname socketpair __xnet_socketpair
504 #pragma redefine_extname getsockopt __xnet_getsockopt
505 #else /* __PRAGMA_REDEFINE_EXTNAME */
506 #define bind __xnet_bind
507 #define connect __xnet_connect
508 #define recvmsg __xnet_recvmsg
509 #define sendmsg __xnet_sendmsg
510 #define sendto __xnet_sendto
511 #define socket __xnet_socket
512 #define socketpair __xnet_socketpair
513 #define getsockopt __xnet_getsockopt
514 #endif /* __PRAGMA_REDEFINE_EXTNAME */
515
516 #endif /* _XPG4_2 */
517
518 #if defined(_XPG4_2) && !defined(_XPG5)
519 #ifdef __PRAGMA_REDEFINE_EXTNAME
520 #pragma redefine_extname listen __xnet_listen
521 #else /* __PRAGMA_REDEFINE_EXTNAME */
522 #define listen __xnet_listen
523 #endif /* __PRAGMA_REDEFINE_EXTNAME */
524 #endif /* (_XPG4_2) && !defined(_XPG5) */
525
526 #if !defined(_KERNEL) || defined(_BOOT)
527 extern int accept(int, struct sockaddr *_RESTRICT_KYWD, Psocklen_t);
528 extern int accept4(int, struct sockaddr *_RESTRICT_KYWD, Psocklen_t, int);
529 extern int bind(int, const struct sockaddr *, socklen_t);
530 extern int connect(int, const struct sockaddr *, socklen_t);
531 extern int getpeername(int, struct sockaddr *_RESTRICT_KYWD, Psocklen_t);
532 extern int getsockname(int, struct sockaddr *_RESTRICT_KYWD, Psocklen_t);
533 extern int getsockopt(int, int, int, void *_RESTRICT_KYWD, Psocklen_t);
534 extern int listen(int, int); /* XXX - fixme??? where do I go */
535 extern int socketpair(int, int, int, int *);
536 extern ssize_t recv(int, void *, size_t, int);
537 extern ssize_t recvfrom(int, void *_RESTRICT_KYWD, size_t, int,
538 struct sockaddr *_RESTRICT_KYWD, Psocklen_t);
539 extern ssize_t recvmsg(int, struct msghdr *, int);
540 extern ssize_t send(int, const void *, size_t, int);
541 extern ssize_t sendmsg(int, const struct msghdr *, int);
542 extern ssize_t sendto(int, const void *, size_t, int, const struct sockaddr *,
543 socklen_t);
544 extern int setsockopt(int, int, int, const void *, socklen_t);
545 extern int shutdown(int, int);
546 extern int socket(int, int, int);
547
548 #if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__)
549 extern int sockatmark(int);
550 #endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */
551 #endif /* !defined(_KERNEL) || defined(_BOOT) */
552
553 #ifdef __cplusplus
554 }
555 #endif
556
557 #endif /* _SYS_SOCKET_H */