socket.h revision 178200
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 178200 2008-04-14 18:06:04Z rrs $ 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#define SO_NO_OFFLOAD 0x4000 /* socket cannot be offloaded */ 122#define SO_NO_DDP 0x8000 /* disable direct data placement */ 123 124/* 125 * Additional options, not kept in so_options. 126 */ 127#define SO_SNDBUF 0x1001 /* send buffer size */ 128#define SO_RCVBUF 0x1002 /* receive buffer size */ 129#define SO_SNDLOWAT 0x1003 /* send low-water mark */ 130#define SO_RCVLOWAT 0x1004 /* receive low-water mark */ 131#define SO_SNDTIMEO 0x1005 /* send timeout */ 132#define SO_RCVTIMEO 0x1006 /* receive timeout */ 133#define SO_ERROR 0x1007 /* get error status and clear */ 134#define SO_TYPE 0x1008 /* get socket type */ 135#if __BSD_VISIBLE 136#define SO_LABEL 0x1009 /* socket's MAC label */ 137#define SO_PEERLABEL 0x1010 /* socket's peer's MAC label */ 138#define SO_LISTENQLIMIT 0x1011 /* socket's backlog limit */ 139#define SO_LISTENQLEN 0x1012 /* socket's complete queue length */ 140#define SO_LISTENINCQLEN 0x1013 /* socket's incomplete queue length */ 141#endif 142 143/* 144 * Structure used for manipulating linger option. 145 */ 146struct linger { 147 int l_onoff; /* option on/off */ 148 int l_linger; /* linger time */ 149}; 150 151#if __BSD_VISIBLE 152struct accept_filter_arg { 153 char af_name[16]; 154 char af_arg[256-16]; 155}; 156#endif 157 158/* 159 * Level number for (get/set)sockopt() to apply to socket itself. 160 */ 161#define SOL_SOCKET 0xffff /* options for socket level */ 162 163/* 164 * Address families. 165 */ 166#define AF_UNSPEC 0 /* unspecified */ 167#if __BSD_VISIBLE 168#define AF_LOCAL AF_UNIX /* local to host (pipes, portals) */ 169#endif 170#define AF_UNIX 1 /* standardized name for AF_LOCAL */ 171#define AF_INET 2 /* internetwork: UDP, TCP, etc. */ 172#if __BSD_VISIBLE 173#define AF_IMPLINK 3 /* arpanet imp addresses */ 174#define AF_PUP 4 /* pup protocols: e.g. BSP */ 175#define AF_CHAOS 5 /* mit CHAOS protocols */ 176#define AF_NETBIOS 6 /* SMB protocols */ 177#define AF_ISO 7 /* ISO protocols */ 178#define AF_OSI AF_ISO 179#define AF_ECMA 8 /* European computer manufacturers */ 180#define AF_DATAKIT 9 /* datakit protocols */ 181#define AF_CCITT 10 /* CCITT protocols, X.25 etc */ 182#define AF_SNA 11 /* IBM SNA */ 183#define AF_DECnet 12 /* DECnet */ 184#define AF_DLI 13 /* DEC Direct data link interface */ 185#define AF_LAT 14 /* LAT */ 186#define AF_HYLINK 15 /* NSC Hyperchannel */ 187#define AF_APPLETALK 16 /* Apple Talk */ 188#define AF_ROUTE 17 /* Internal Routing Protocol */ 189#define AF_LINK 18 /* Link layer interface */ 190#define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */ 191#define AF_COIP 20 /* connection-oriented IP, aka ST II */ 192#define AF_CNT 21 /* Computer Network Technology */ 193#define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */ 194#define AF_IPX 23 /* Novell Internet Protocol */ 195#define AF_SIP 24 /* Simple Internet Protocol */ 196#define pseudo_AF_PIP 25 /* Help Identify PIP packets */ 197#define AF_ISDN 26 /* Integrated Services Digital Network*/ 198#define AF_E164 AF_ISDN /* CCITT E.164 recommendation */ 199#define pseudo_AF_KEY 27 /* Internal key-management function */ 200#endif 201#define AF_INET6 28 /* IPv6 */ 202#if __BSD_VISIBLE 203#define AF_NATM 29 /* native ATM access */ 204#define AF_ATM 30 /* ATM */ 205#define pseudo_AF_HDRCMPLT 31 /* Used by BPF to not rewrite headers 206 * in interface output routine 207 */ 208#define AF_NETGRAPH 32 /* Netgraph sockets */ 209#define AF_SLOW 33 /* 802.3ad slow protocol */ 210#define AF_SCLUSTER 34 /* Sitara cluster protocol */ 211#define AF_ARP 35 212#define AF_BLUETOOTH 36 /* Bluetooth sockets */ 213#define AF_IEEE80211 37 /* IEEE 802.11 protocol */ 214#define AF_MAX 38 215/* 216 * When allocating a new AF_ constant, please only allocate 217 * even numbered constants for FreeBSD until 134 as odd numbered AF_ 218 * constants 39-133 are now reserved for vendors. 219 */ 220#define AF_VENDOR00 39 221#define AF_VENDOR01 41 222#define AF_VENDOR02 43 223#define AF_VENDOR03 45 224#define AF_VENDOR04 47 225#define AF_VENDOR05 49 226#define AF_VENDOR06 51 227#define AF_VENDOR07 53 228#define AF_VENDOR08 55 229#define AF_VENDOR09 57 230#define AF_VENDOR10 59 231#define AF_VENDOR11 61 232#define AF_VENDOR12 63 233#define AF_VENDOR13 65 234#define AF_VENDOR14 67 235#define AF_VENDOR15 69 236#define AF_VENDOR16 71 237#define AF_VENDOR17 73 238#define AF_VENDOR18 75 239#define AF_VENDOR19 77 240#define AF_VENDOR20 79 241#define AF_VENDOR21 81 242#define AF_VENDOR22 83 243#define AF_VENDOR23 85 244#define AF_VENDOR24 87 245#define AF_VENDOR25 89 246#define AF_VENDOR26 91 247#define AF_VENDOR27 93 248#define AF_VENDOR28 95 249#define AF_VENDOR29 97 250#define AF_VENDOR30 99 251#define AF_VENDOR31 101 252#define AF_VENDOR32 103 253#define AF_VENDOR33 105 254#define AF_VENDOR34 107 255#define AF_VENDOR35 109 256#define AF_VENDOR36 111 257#define AF_VENDOR37 113 258#define AF_VENDOR38 115 259#define AF_VENDOR39 117 260#define AF_VENDOR40 119 261#define AF_VENDOR41 121 262#define AF_VENDOR42 123 263#define AF_VENDOR43 125 264#define AF_VENDOR44 127 265#define AF_VENDOR45 129 266#define AF_VENDOR46 131 267#define AF_VENDOR47 133 268#endif 269 270/* 271 * Structure used by kernel to store most 272 * addresses. 273 */ 274struct sockaddr { 275 unsigned char sa_len; /* total length */ 276 sa_family_t sa_family; /* address family */ 277 char sa_data[14]; /* actually longer; address value */ 278}; 279#if __BSD_VISIBLE 280#define SOCK_MAXADDRLEN 255 /* longest possible addresses */ 281 282/* 283 * Structure used by kernel to pass protocol 284 * information in raw sockets. 285 */ 286struct sockproto { 287 unsigned short sp_family; /* address family */ 288 unsigned short sp_protocol; /* protocol */ 289}; 290#endif 291 292#ifndef _STRUCT_SOCKADDR_STORAGE_DECLARED 293/* 294 * RFC 2553: protocol-independent placeholder for socket addresses 295 */ 296#define _SS_MAXSIZE 128U 297#define _SS_ALIGNSIZE (sizeof(__int64_t)) 298#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(unsigned char) - \ 299 sizeof(sa_family_t)) 300#define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(unsigned char) - \ 301 sizeof(sa_family_t) - _SS_PAD1SIZE - _SS_ALIGNSIZE) 302 303struct sockaddr_storage { 304 unsigned char ss_len; /* address length */ 305 sa_family_t ss_family; /* address family */ 306 char __ss_pad1[_SS_PAD1SIZE]; 307 __int64_t __ss_align; /* force desired struct alignment */ 308 char __ss_pad2[_SS_PAD2SIZE]; 309}; 310#define _STRUCT_SOCKADDR_STORAGE_DECLARED 311#endif 312 313#if __BSD_VISIBLE 314/* 315 * Protocol families, same as address families for now. 316 */ 317#define PF_UNSPEC AF_UNSPEC 318#define PF_LOCAL AF_LOCAL 319#define PF_UNIX PF_LOCAL /* backward compatibility */ 320#define PF_INET AF_INET 321#define PF_IMPLINK AF_IMPLINK 322#define PF_PUP AF_PUP 323#define PF_CHAOS AF_CHAOS 324#define PF_NETBIOS AF_NETBIOS 325#define PF_ISO AF_ISO 326#define PF_OSI AF_ISO 327#define PF_ECMA AF_ECMA 328#define PF_DATAKIT AF_DATAKIT 329#define PF_CCITT AF_CCITT 330#define PF_SNA AF_SNA 331#define PF_DECnet AF_DECnet 332#define PF_DLI AF_DLI 333#define PF_LAT AF_LAT 334#define PF_HYLINK AF_HYLINK 335#define PF_APPLETALK AF_APPLETALK 336#define PF_ROUTE AF_ROUTE 337#define PF_LINK AF_LINK 338#define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */ 339#define PF_COIP AF_COIP 340#define PF_CNT AF_CNT 341#define PF_SIP AF_SIP 342#define PF_IPX AF_IPX 343#define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */ 344#define PF_PIP pseudo_AF_PIP 345#define PF_ISDN AF_ISDN 346#define PF_KEY pseudo_AF_KEY 347#define PF_INET6 AF_INET6 348#define PF_NATM AF_NATM 349#define PF_ATM AF_ATM 350#define PF_NETGRAPH AF_NETGRAPH 351#define PF_SLOW AF_SLOW 352#define PF_SCLUSTER AF_SCLUSTER 353#define PF_ARP AF_ARP 354#define PF_BLUETOOTH AF_BLUETOOTH 355 356#define PF_MAX AF_MAX 357 358/* 359 * Definitions for network related sysctl, CTL_NET. 360 * 361 * Second level is protocol family. 362 * Third level is protocol number. 363 * 364 * Further levels are defined by the individual families below. 365 */ 366#define NET_MAXID AF_MAX 367 368#define CTL_NET_NAMES { \ 369 { 0, 0 }, \ 370 { "unix", CTLTYPE_NODE }, \ 371 { "inet", CTLTYPE_NODE }, \ 372 { "implink", CTLTYPE_NODE }, \ 373 { "pup", CTLTYPE_NODE }, \ 374 { "chaos", CTLTYPE_NODE }, \ 375 { "xerox_ns", CTLTYPE_NODE }, \ 376 { "iso", CTLTYPE_NODE }, \ 377 { "emca", CTLTYPE_NODE }, \ 378 { "datakit", CTLTYPE_NODE }, \ 379 { "ccitt", CTLTYPE_NODE }, \ 380 { "ibm_sna", CTLTYPE_NODE }, \ 381 { "decnet", CTLTYPE_NODE }, \ 382 { "dec_dli", CTLTYPE_NODE }, \ 383 { "lat", CTLTYPE_NODE }, \ 384 { "hylink", CTLTYPE_NODE }, \ 385 { "appletalk", CTLTYPE_NODE }, \ 386 { "route", CTLTYPE_NODE }, \ 387 { "link_layer", CTLTYPE_NODE }, \ 388 { "xtp", CTLTYPE_NODE }, \ 389 { "coip", CTLTYPE_NODE }, \ 390 { "cnt", CTLTYPE_NODE }, \ 391 { "rtip", CTLTYPE_NODE }, \ 392 { "ipx", CTLTYPE_NODE }, \ 393 { "sip", CTLTYPE_NODE }, \ 394 { "pip", CTLTYPE_NODE }, \ 395 { "isdn", CTLTYPE_NODE }, \ 396 { "key", CTLTYPE_NODE }, \ 397 { "inet6", CTLTYPE_NODE }, \ 398 { "natm", CTLTYPE_NODE }, \ 399 { "atm", CTLTYPE_NODE }, \ 400 { "hdrcomplete", CTLTYPE_NODE }, \ 401 { "netgraph", CTLTYPE_NODE }, \ 402 { "snp", CTLTYPE_NODE }, \ 403 { "scp", CTLTYPE_NODE }, \ 404} 405 406/* 407 * PF_ROUTE - Routing table 408 * 409 * Three additional levels are defined: 410 * Fourth: address family, 0 is wildcard 411 * Fifth: type of info, defined below 412 * Sixth: flag(s) to mask with for NET_RT_FLAGS 413 */ 414#define NET_RT_DUMP 1 /* dump; may limit to a.f. */ 415#define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */ 416#define NET_RT_IFLIST 3 /* survey interface list */ 417#define NET_RT_IFMALIST 4 /* return multicast address list */ 418#define NET_RT_MAXID 5 419 420#define CTL_NET_RT_NAMES { \ 421 { 0, 0 }, \ 422 { "dump", CTLTYPE_STRUCT }, \ 423 { "flags", CTLTYPE_STRUCT }, \ 424 { "iflist", CTLTYPE_STRUCT }, \ 425 { "ifmalist", CTLTYPE_STRUCT }, \ 426} 427#endif /* __BSD_VISIBLE */ 428 429/* 430 * Maximum queue length specifiable by listen. 431 */ 432#define SOMAXCONN 128 433 434/* 435 * Message header for recvmsg and sendmsg calls. 436 * Used value-result for recvmsg, value only for sendmsg. 437 */ 438struct msghdr { 439 void *msg_name; /* optional address */ 440 socklen_t msg_namelen; /* size of address */ 441 struct iovec *msg_iov; /* scatter/gather array */ 442 int msg_iovlen; /* # elements in msg_iov */ 443 void *msg_control; /* ancillary data, see below */ 444 socklen_t msg_controllen; /* ancillary data buffer len */ 445 int msg_flags; /* flags on received message */ 446}; 447 448#define MSG_OOB 0x1 /* process out-of-band data */ 449#define MSG_PEEK 0x2 /* peek at incoming message */ 450#define MSG_DONTROUTE 0x4 /* send without using routing tables */ 451#define MSG_EOR 0x8 /* data completes record */ 452#define MSG_TRUNC 0x10 /* data discarded before delivery */ 453#define MSG_CTRUNC 0x20 /* control data lost before delivery */ 454#define MSG_WAITALL 0x40 /* wait for full request or error */ 455#define MSG_NOTIFICATION 0x2000 /* SCTP notification */ 456#if __BSD_VISIBLE 457#define MSG_DONTWAIT 0x80 /* this message should be nonblocking */ 458#define MSG_EOF 0x100 /* data completes connection */ 459#define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */ 460#define MSG_COMPAT 0x8000 /* used in sendit() */ 461#endif 462#ifdef _KERNEL 463#define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */ 464#endif 465#if __BSD_VISIBLE 466#define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */ 467#endif 468 469/* 470 * Header for ancillary data objects in msg_control buffer. 471 * Used for additional information with/about a datagram 472 * not expressible by flags. The format is a sequence 473 * of message elements headed by cmsghdr structures. 474 */ 475struct cmsghdr { 476 socklen_t cmsg_len; /* data byte count, including hdr */ 477 int cmsg_level; /* originating protocol */ 478 int cmsg_type; /* protocol-specific type */ 479/* followed by u_char cmsg_data[]; */ 480}; 481 482#if __BSD_VISIBLE 483/* 484 * While we may have more groups than this, the cmsgcred struct must 485 * be able to fit in an mbuf, and NGROUPS_MAX is too large to allow 486 * this. 487*/ 488#define CMGROUP_MAX 16 489 490/* 491 * Credentials structure, used to verify the identity of a peer 492 * process that has sent us a message. This is allocated by the 493 * peer process but filled in by the kernel. This prevents the 494 * peer from lying about its identity. (Note that cmcred_groups[0] 495 * is the effective GID.) 496 */ 497struct cmsgcred { 498 pid_t cmcred_pid; /* PID of sending process */ 499 uid_t cmcred_uid; /* real UID of sending process */ 500 uid_t cmcred_euid; /* effective UID of sending process */ 501 gid_t cmcred_gid; /* real GID of sending process */ 502 short cmcred_ngroups; /* number or groups */ 503 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */ 504}; 505 506/* 507 * Socket credentials. 508 */ 509struct sockcred { 510 uid_t sc_uid; /* real user id */ 511 uid_t sc_euid; /* effective user id */ 512 gid_t sc_gid; /* real group id */ 513 gid_t sc_egid; /* effective group id */ 514 int sc_ngroups; /* number of supplemental groups */ 515 gid_t sc_groups[1]; /* variable length */ 516}; 517 518/* 519 * Compute size of a sockcred structure with groups. 520 */ 521#define SOCKCREDSIZE(ngrps) \ 522 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1))) 523 524#endif /* __BSD_VISIBLE */ 525 526/* given pointer to struct cmsghdr, return pointer to data */ 527#define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \ 528 _ALIGN(sizeof(struct cmsghdr))) 529 530/* given pointer to struct cmsghdr, return pointer to next cmsghdr */ 531#define CMSG_NXTHDR(mhdr, cmsg) \ 532 ((char *)(cmsg) == NULL ? CMSG_FIRSTHDR(mhdr) : \ 533 ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \ 534 _ALIGN(sizeof(struct cmsghdr)) > \ 535 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \ 536 (struct cmsghdr *)0 : \ 537 (struct cmsghdr *)((char *)(cmsg) + \ 538 _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len))) 539 540/* 541 * RFC 2292 requires to check msg_controllen, in case that the kernel returns 542 * an empty list for some reasons. 543 */ 544#define CMSG_FIRSTHDR(mhdr) \ 545 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ 546 (struct cmsghdr *)(mhdr)->msg_control : \ 547 (struct cmsghdr *)NULL) 548 549#if __BSD_VISIBLE 550/* RFC 2292 additions */ 551#define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l)) 552#define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l)) 553#endif 554 555#ifdef _KERNEL 556#define CMSG_ALIGN(n) _ALIGN(n) 557#endif 558 559/* "Socket"-level control message types: */ 560#define SCM_RIGHTS 0x01 /* access rights (array of int) */ 561#if __BSD_VISIBLE 562#define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */ 563#define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */ 564#define SCM_BINTIME 0x04 /* timestamp (struct bintime) */ 565#endif 566 567#if __BSD_VISIBLE 568/* 569 * 4.3 compat sockaddr, move to compat file later 570 */ 571struct osockaddr { 572 unsigned short sa_family; /* address family */ 573 char sa_data[14]; /* up to 14 bytes of direct address */ 574}; 575 576/* 577 * 4.3-compat message header (move to compat file later). 578 */ 579struct omsghdr { 580 char *msg_name; /* optional address */ 581 int msg_namelen; /* size of address */ 582 struct iovec *msg_iov; /* scatter/gather array */ 583 int msg_iovlen; /* # elements in msg_iov */ 584 char *msg_accrights; /* access rights sent/received */ 585 int msg_accrightslen; 586}; 587#endif 588 589/* 590 * howto arguments for shutdown(2), specified by Posix.1g. 591 */ 592#define SHUT_RD 0 /* shut down the reading side */ 593#define SHUT_WR 1 /* shut down the writing side */ 594#define SHUT_RDWR 2 /* shut down both sides */ 595 596/* we cheat and use the SHUT_XX defines for these */ 597#define PRU_FLUSH_RD SHUT_RD 598#define PRU_FLUSH_WR SHUT_WR 599#define PRU_FLUSH_RDWR SHUT_RDWR 600 601 602#if __BSD_VISIBLE 603/* 604 * sendfile(2) header/trailer struct 605 */ 606struct sf_hdtr { 607 struct iovec *headers; /* pointer to an array of header struct iovec's */ 608 int hdr_cnt; /* number of header iovec's */ 609 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */ 610 int trl_cnt; /* number of trailer iovec's */ 611}; 612 613/* 614 * Sendfile-specific flag(s) 615 */ 616#define SF_NODISKIO 0x00000001 617#define SF_MNOWAIT 0x00000002 618#define SF_SYNC 0x00000004 619#endif 620 621#ifndef _KERNEL 622 623#include <sys/cdefs.h> 624 625__BEGIN_DECLS 626int accept(int, struct sockaddr * __restrict, socklen_t * __restrict); 627int bind(int, const struct sockaddr *, socklen_t); 628int connect(int, const struct sockaddr *, socklen_t); 629int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict); 630int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict); 631int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict); 632int listen(int, int); 633ssize_t recv(int, void *, size_t, int); 634ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict); 635ssize_t recvmsg(int, struct msghdr *, int); 636ssize_t send(int, const void *, size_t, int); 637ssize_t sendto(int, const void *, 638 size_t, int, const struct sockaddr *, socklen_t); 639ssize_t sendmsg(int, const struct msghdr *, int); 640#if __BSD_VISIBLE 641int sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int); 642#endif 643int setsockopt(int, int, int, const void *, socklen_t); 644int shutdown(int, int); 645int sockatmark(int); 646int socket(int, int, int); 647int socketpair(int, int, int, int *); 648__END_DECLS 649 650#endif /* !_KERNEL */ 651 652#endif /* !_SYS_SOCKET_H_ */ 653