socket.h revision 160690
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: head/sys/sys/socket.h 160690 2006-07-26 03:15:16Z sam $ 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 52typedef __gid_t gid_t; 53#define _GID_T_DECLARED 54#endif 55 56#ifndef _OFF_T_DECLARED 57typedef __off_t off_t; 58#define _OFF_T_DECLARED 59#endif 60 61#ifndef _PID_T_DECLARED 62typedef __pid_t pid_t; 63#define _PID_T_DECLARED 64#endif 65#endif 66 67#ifndef _SA_FAMILY_T_DECLARED 68typedef __sa_family_t sa_family_t; 69#define _SA_FAMILY_T_DECLARED 70#endif 71 72#ifndef _SOCKLEN_T_DECLARED 73typedef __socklen_t socklen_t; 74#define _SOCKLEN_T_DECLARED 75#endif 76 77#ifndef _SSIZE_T_DECLARED 78typedef __ssize_t ssize_t; 79#define _SSIZE_T_DECLARED 80#endif 81 82#if __BSD_VISIBLE 83#ifndef _UID_T_DECLARED 84typedef __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 */ 144struct linger { 145 int l_onoff; /* option on/off */ 146 int l_linger; /* linger time */ 147}; 148 149#if __BSD_VISIBLE 150struct 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#endif 214 215/* 216 * Structure used by kernel to store most 217 * addresses. 218 */ 219struct sockaddr { 220 unsigned char sa_len; /* total length */ 221 sa_family_t sa_family; /* address family */ 222 char sa_data[14]; /* actually longer; address value */ 223}; 224#if __BSD_VISIBLE 225#define SOCK_MAXADDRLEN 255 /* longest possible addresses */ 226 227/* 228 * Structure used by kernel to pass protocol 229 * information in raw sockets. 230 */ 231struct sockproto { 232 unsigned short sp_family; /* address family */ 233 unsigned short sp_protocol; /* protocol */ 234}; 235#endif 236 237/* 238 * RFC 2553: protocol-independent placeholder for socket addresses 239 */ 240#define _SS_MAXSIZE 128U 241#define _SS_ALIGNSIZE (sizeof(__int64_t)) 242#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(unsigned char) - \ 243 sizeof(sa_family_t)) 244#define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(unsigned char) - \ 245 sizeof(sa_family_t) - _SS_PAD1SIZE - _SS_ALIGNSIZE) 246 247struct sockaddr_storage { 248 unsigned char ss_len; /* address length */ 249 sa_family_t ss_family; /* address family */ 250 char __ss_pad1[_SS_PAD1SIZE]; 251 __int64_t __ss_align; /* force desired struct alignment */ 252 char __ss_pad2[_SS_PAD2SIZE]; 253}; 254 255#if __BSD_VISIBLE 256/* 257 * Protocol families, same as address families for now. 258 */ 259#define PF_UNSPEC AF_UNSPEC 260#define PF_LOCAL AF_LOCAL 261#define PF_UNIX PF_LOCAL /* backward compatibility */ 262#define PF_INET AF_INET 263#define PF_IMPLINK AF_IMPLINK 264#define PF_PUP AF_PUP 265#define PF_CHAOS AF_CHAOS 266#define PF_NETBIOS AF_NETBIOS 267#define PF_ISO AF_ISO 268#define PF_OSI AF_ISO 269#define PF_ECMA AF_ECMA 270#define PF_DATAKIT AF_DATAKIT 271#define PF_CCITT AF_CCITT 272#define PF_SNA AF_SNA 273#define PF_DECnet AF_DECnet 274#define PF_DLI AF_DLI 275#define PF_LAT AF_LAT 276#define PF_HYLINK AF_HYLINK 277#define PF_APPLETALK AF_APPLETALK 278#define PF_ROUTE AF_ROUTE 279#define PF_LINK AF_LINK 280#define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */ 281#define PF_COIP AF_COIP 282#define PF_CNT AF_CNT 283#define PF_SIP AF_SIP 284#define PF_IPX AF_IPX 285#define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */ 286#define PF_PIP pseudo_AF_PIP 287#define PF_ISDN AF_ISDN 288#define PF_KEY pseudo_AF_KEY 289#define PF_INET6 AF_INET6 290#define PF_NATM AF_NATM 291#define PF_ATM AF_ATM 292#define PF_NETGRAPH AF_NETGRAPH 293#define PF_SLOW AF_SLOW 294#define PF_SCLUSTER AF_SCLUSTER 295#define PF_ARP AF_ARP 296#define PF_BLUETOOTH AF_BLUETOOTH 297 298#define PF_MAX AF_MAX 299 300/* 301 * Definitions for network related sysctl, CTL_NET. 302 * 303 * Second level is protocol family. 304 * Third level is protocol number. 305 * 306 * Further levels are defined by the individual families below. 307 */ 308#define NET_MAXID AF_MAX 309 310#define CTL_NET_NAMES { \ 311 { 0, 0 }, \ 312 { "unix", CTLTYPE_NODE }, \ 313 { "inet", CTLTYPE_NODE }, \ 314 { "implink", CTLTYPE_NODE }, \ 315 { "pup", CTLTYPE_NODE }, \ 316 { "chaos", CTLTYPE_NODE }, \ 317 { "xerox_ns", CTLTYPE_NODE }, \ 318 { "iso", CTLTYPE_NODE }, \ 319 { "emca", CTLTYPE_NODE }, \ 320 { "datakit", CTLTYPE_NODE }, \ 321 { "ccitt", CTLTYPE_NODE }, \ 322 { "ibm_sna", CTLTYPE_NODE }, \ 323 { "decnet", CTLTYPE_NODE }, \ 324 { "dec_dli", CTLTYPE_NODE }, \ 325 { "lat", CTLTYPE_NODE }, \ 326 { "hylink", CTLTYPE_NODE }, \ 327 { "appletalk", CTLTYPE_NODE }, \ 328 { "route", CTLTYPE_NODE }, \ 329 { "link_layer", CTLTYPE_NODE }, \ 330 { "xtp", CTLTYPE_NODE }, \ 331 { "coip", CTLTYPE_NODE }, \ 332 { "cnt", CTLTYPE_NODE }, \ 333 { "rtip", CTLTYPE_NODE }, \ 334 { "ipx", CTLTYPE_NODE }, \ 335 { "sip", CTLTYPE_NODE }, \ 336 { "pip", CTLTYPE_NODE }, \ 337 { "isdn", CTLTYPE_NODE }, \ 338 { "key", CTLTYPE_NODE }, \ 339 { "inet6", CTLTYPE_NODE }, \ 340 { "natm", CTLTYPE_NODE }, \ 341 { "atm", CTLTYPE_NODE }, \ 342 { "hdrcomplete", CTLTYPE_NODE }, \ 343 { "netgraph", CTLTYPE_NODE }, \ 344 { "snp", CTLTYPE_NODE }, \ 345 { "scp", CTLTYPE_NODE }, \ 346} 347 348/* 349 * PF_ROUTE - Routing table 350 * 351 * Three additional levels are defined: 352 * Fourth: address family, 0 is wildcard 353 * Fifth: type of info, defined below 354 * Sixth: flag(s) to mask with for NET_RT_FLAGS 355 */ 356#define NET_RT_DUMP 1 /* dump; may limit to a.f. */ 357#define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */ 358#define NET_RT_IFLIST 3 /* survey interface list */ 359#define NET_RT_IFMALIST 4 /* return multicast address list */ 360#define NET_RT_MAXID 5 361 362#define CTL_NET_RT_NAMES { \ 363 { 0, 0 }, \ 364 { "dump", CTLTYPE_STRUCT }, \ 365 { "flags", CTLTYPE_STRUCT }, \ 366 { "iflist", CTLTYPE_STRUCT }, \ 367 { "ifmalist", CTLTYPE_STRUCT }, \ 368} 369#endif /* __BSD_VISIBLE */ 370 371/* 372 * Maximum queue length specifiable by listen. 373 */ 374#define SOMAXCONN 128 375 376/* 377 * Message header for recvmsg and sendmsg calls. 378 * Used value-result for recvmsg, value only for sendmsg. 379 */ 380struct msghdr { 381 void *msg_name; /* optional address */ 382 socklen_t msg_namelen; /* size of address */ 383 struct iovec *msg_iov; /* scatter/gather array */ 384 int msg_iovlen; /* # elements in msg_iov */ 385 void *msg_control; /* ancillary data, see below */ 386 socklen_t msg_controllen; /* ancillary data buffer len */ 387 int msg_flags; /* flags on received message */ 388}; 389 390#define MSG_OOB 0x1 /* process out-of-band data */ 391#define MSG_PEEK 0x2 /* peek at incoming message */ 392#define MSG_DONTROUTE 0x4 /* send without using routing tables */ 393#define MSG_EOR 0x8 /* data completes record */ 394#define MSG_TRUNC 0x10 /* data discarded before delivery */ 395#define MSG_CTRUNC 0x20 /* control data lost before delivery */ 396#define MSG_WAITALL 0x40 /* wait for full request or error */ 397#if __BSD_VISIBLE 398#define MSG_DONTWAIT 0x80 /* this message should be nonblocking */ 399#define MSG_EOF 0x100 /* data completes connection */ 400#define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */ 401#define MSG_COMPAT 0x8000 /* used in sendit() */ 402#endif 403#ifdef _KERNEL 404#define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */ 405#endif 406#if __BSD_VISIBLE 407#define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */ 408#endif 409 410/* 411 * Header for ancillary data objects in msg_control buffer. 412 * Used for additional information with/about a datagram 413 * not expressible by flags. The format is a sequence 414 * of message elements headed by cmsghdr structures. 415 */ 416struct cmsghdr { 417 socklen_t cmsg_len; /* data byte count, including hdr */ 418 int cmsg_level; /* originating protocol */ 419 int cmsg_type; /* protocol-specific type */ 420/* followed by u_char cmsg_data[]; */ 421}; 422 423#if __BSD_VISIBLE 424/* 425 * While we may have more groups than this, the cmsgcred struct must 426 * be able to fit in an mbuf, and NGROUPS_MAX is too large to allow 427 * this. 428*/ 429#define CMGROUP_MAX 16 430 431/* 432 * Credentials structure, used to verify the identity of a peer 433 * process that has sent us a message. This is allocated by the 434 * peer process but filled in by the kernel. This prevents the 435 * peer from lying about its identity. (Note that cmcred_groups[0] 436 * is the effective GID.) 437 */ 438struct cmsgcred { 439 pid_t cmcred_pid; /* PID of sending process */ 440 uid_t cmcred_uid; /* real UID of sending process */ 441 uid_t cmcred_euid; /* effective UID of sending process */ 442 gid_t cmcred_gid; /* real GID of sending process */ 443 short cmcred_ngroups; /* number or groups */ 444 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */ 445}; 446 447/* 448 * Socket credentials. 449 */ 450struct sockcred { 451 uid_t sc_uid; /* real user id */ 452 uid_t sc_euid; /* effective user id */ 453 gid_t sc_gid; /* real group id */ 454 gid_t sc_egid; /* effective group id */ 455 int sc_ngroups; /* number of supplemental groups */ 456 gid_t sc_groups[1]; /* variable length */ 457}; 458 459/* 460 * Compute size of a sockcred structure with groups. 461 */ 462#define SOCKCREDSIZE(ngrps) \ 463 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1))) 464 465#endif /* __BSD_VISIBLE */ 466 467/* given pointer to struct cmsghdr, return pointer to data */ 468#define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \ 469 _ALIGN(sizeof(struct cmsghdr))) 470 471/* given pointer to struct cmsghdr, return pointer to next cmsghdr */ 472#define CMSG_NXTHDR(mhdr, cmsg) \ 473 (((char *)(cmsg) + _ALIGN((cmsg)->cmsg_len) + \ 474 _ALIGN(sizeof(struct cmsghdr)) > \ 475 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \ 476 (struct cmsghdr *)0 : \ 477 (struct cmsghdr *)((char *)(cmsg) + _ALIGN((cmsg)->cmsg_len))) 478 479/* 480 * RFC 2292 requires to check msg_controllen, in case that the kernel returns 481 * an empty list for some reasons. 482 */ 483#define CMSG_FIRSTHDR(mhdr) \ 484 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ 485 (struct cmsghdr *)(mhdr)->msg_control : \ 486 (struct cmsghdr *)NULL) 487 488#if __BSD_VISIBLE 489/* RFC 2292 additions */ 490#define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l)) 491#define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l)) 492#endif 493 494#ifdef _KERNEL 495#define CMSG_ALIGN(n) _ALIGN(n) 496#endif 497 498/* "Socket"-level control message types: */ 499#define SCM_RIGHTS 0x01 /* access rights (array of int) */ 500#if __BSD_VISIBLE 501#define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */ 502#define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */ 503#define SCM_BINTIME 0x04 /* timestamp (struct bintime) */ 504#endif 505 506#if __BSD_VISIBLE 507/* 508 * 4.3 compat sockaddr, move to compat file later 509 */ 510struct osockaddr { 511 unsigned short sa_family; /* address family */ 512 char sa_data[14]; /* up to 14 bytes of direct address */ 513}; 514 515/* 516 * 4.3-compat message header (move to compat file later). 517 */ 518struct omsghdr { 519 char *msg_name; /* optional address */ 520 int msg_namelen; /* size of address */ 521 struct iovec *msg_iov; /* scatter/gather array */ 522 int msg_iovlen; /* # elements in msg_iov */ 523 char *msg_accrights; /* access rights sent/received */ 524 int msg_accrightslen; 525}; 526#endif 527 528/* 529 * howto arguments for shutdown(2), specified by Posix.1g. 530 */ 531#define SHUT_RD 0 /* shut down the reading side */ 532#define SHUT_WR 1 /* shut down the writing side */ 533#define SHUT_RDWR 2 /* shut down both sides */ 534 535#if __BSD_VISIBLE 536/* 537 * sendfile(2) header/trailer struct 538 */ 539struct sf_hdtr { 540 struct iovec *headers; /* pointer to an array of header struct iovec's */ 541 int hdr_cnt; /* number of header iovec's */ 542 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */ 543 int trl_cnt; /* number of trailer iovec's */ 544}; 545 546/* 547 * Sendfile-specific flag(s) 548 */ 549#define SF_NODISKIO 0x00000001 550#endif 551 552#ifndef _KERNEL 553 554#include <sys/cdefs.h> 555 556__BEGIN_DECLS 557int accept(int, struct sockaddr * __restrict, socklen_t * __restrict); 558int bind(int, const struct sockaddr *, socklen_t); 559int connect(int, const struct sockaddr *, socklen_t); 560int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict); 561int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict); 562int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict); 563int listen(int, int); 564ssize_t recv(int, void *, size_t, int); 565ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict); 566ssize_t recvmsg(int, struct msghdr *, int); 567ssize_t send(int, const void *, size_t, int); 568ssize_t sendto(int, const void *, 569 size_t, int, const struct sockaddr *, socklen_t); 570ssize_t sendmsg(int, const struct msghdr *, int); 571#if __BSD_VISIBLE 572int sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int); 573#endif 574int setsockopt(int, int, int, const void *, socklen_t); 575int shutdown(int, int); 576int sockatmark(int); 577int socket(int, int, int); 578int socketpair(int, int, int, int *); 579__END_DECLS 580 581#endif /* !_KERNEL */ 582 583#endif /* !_SYS_SOCKET_H_ */ 584