socket.h revision 251673
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 251673 2013-06-13 01:29:54Z kevlo $ 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#include <machine/_align.h> 40 41/* 42 * Definitions related to sockets: types, address families, options. 43 */ 44 45/* 46 * Data types. 47 */ 48#if __BSD_VISIBLE 49#ifndef _GID_T_DECLARED 50typedef __gid_t gid_t; 51#define _GID_T_DECLARED 52#endif 53 54#ifndef _OFF_T_DECLARED 55typedef __off_t off_t; 56#define _OFF_T_DECLARED 57#endif 58 59#ifndef _PID_T_DECLARED 60typedef __pid_t pid_t; 61#define _PID_T_DECLARED 62#endif 63#endif 64 65#ifndef _SA_FAMILY_T_DECLARED 66typedef __sa_family_t sa_family_t; 67#define _SA_FAMILY_T_DECLARED 68#endif 69 70#ifndef _SOCKLEN_T_DECLARED 71typedef __socklen_t socklen_t; 72#define _SOCKLEN_T_DECLARED 73#endif 74 75#ifndef _SSIZE_T_DECLARED 76typedef __ssize_t ssize_t; 77#define _SSIZE_T_DECLARED 78#endif 79 80#if __BSD_VISIBLE 81#ifndef _UID_T_DECLARED 82typedef __uid_t uid_t; 83#define _UID_T_DECLARED 84#endif 85#endif 86 87/* 88 * Types 89 */ 90#define SOCK_STREAM 1 /* stream socket */ 91#define SOCK_DGRAM 2 /* datagram socket */ 92#define SOCK_RAW 3 /* raw-protocol interface */ 93#if __BSD_VISIBLE 94#define SOCK_RDM 4 /* reliably-delivered message */ 95#endif 96#define SOCK_SEQPACKET 5 /* sequenced packet stream */ 97 98#if __BSD_VISIBLE 99/* 100 * Creation flags, OR'ed into socket() and socketpair() type argument. 101 */ 102#define SOCK_CLOEXEC 0x10000000 103#define SOCK_NONBLOCK 0x20000000 104#endif 105 106/* 107 * Option flags per-socket. 108 */ 109#define SO_DEBUG 0x0001 /* turn on debugging info recording */ 110#define SO_ACCEPTCONN 0x0002 /* socket has had listen() */ 111#define SO_REUSEADDR 0x0004 /* allow local address reuse */ 112#define SO_KEEPALIVE 0x0008 /* keep connections alive */ 113#define SO_DONTROUTE 0x0010 /* just use interface addresses */ 114#define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */ 115#if __BSD_VISIBLE 116#define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */ 117#endif 118#define SO_LINGER 0x0080 /* linger on close if data present */ 119#define SO_OOBINLINE 0x0100 /* leave received OOB data in line */ 120#if __BSD_VISIBLE 121#define SO_REUSEPORT 0x0200 /* allow local address & port reuse */ 122#define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */ 123#define SO_NOSIGPIPE 0x0800 /* no SIGPIPE from EPIPE */ 124#define SO_ACCEPTFILTER 0x1000 /* there is an accept filter */ 125#define SO_BINTIME 0x2000 /* timestamp received dgram traffic */ 126#endif 127#define SO_NO_OFFLOAD 0x4000 /* socket cannot be offloaded */ 128#define SO_NO_DDP 0x8000 /* disable direct data placement */ 129 130/* 131 * Additional options, not kept in so_options. 132 */ 133#define SO_SNDBUF 0x1001 /* send buffer size */ 134#define SO_RCVBUF 0x1002 /* receive buffer size */ 135#define SO_SNDLOWAT 0x1003 /* send low-water mark */ 136#define SO_RCVLOWAT 0x1004 /* receive low-water mark */ 137#define SO_SNDTIMEO 0x1005 /* send timeout */ 138#define SO_RCVTIMEO 0x1006 /* receive timeout */ 139#define SO_ERROR 0x1007 /* get error status and clear */ 140#define SO_TYPE 0x1008 /* get socket type */ 141#if __BSD_VISIBLE 142#define SO_LABEL 0x1009 /* socket's MAC label */ 143#define SO_PEERLABEL 0x1010 /* socket's peer's MAC label */ 144#define SO_LISTENQLIMIT 0x1011 /* socket's backlog limit */ 145#define SO_LISTENQLEN 0x1012 /* socket's complete queue length */ 146#define SO_LISTENINCQLEN 0x1013 /* socket's incomplete queue length */ 147#define SO_SETFIB 0x1014 /* use this FIB to route */ 148#define SO_USER_COOKIE 0x1015 /* user cookie (dummynet etc.) */ 149#define SO_PROTOCOL 0x1016 /* get socket protocol (Linux name) */ 150#define SO_PROTOTYPE SO_PROTOCOL /* alias for SO_PROTOCOL (SunOS name) */ 151#endif 152 153/* 154 * Space reserved for new socket options added by third-party vendors. 155 * This range applies to all socket option levels. New socket options 156 * in FreeBSD should always use an option value less than SO_VENDOR. 157 */ 158#if __BSD_VISIBLE 159#define SO_VENDOR 0x80000000 160#endif 161 162/* 163 * Structure used for manipulating linger option. 164 */ 165struct linger { 166 int l_onoff; /* option on/off */ 167 int l_linger; /* linger time */ 168}; 169 170#if __BSD_VISIBLE 171struct accept_filter_arg { 172 char af_name[16]; 173 char af_arg[256-16]; 174}; 175#endif 176 177/* 178 * Level number for (get/set)sockopt() to apply to socket itself. 179 */ 180#define SOL_SOCKET 0xffff /* options for socket level */ 181 182/* 183 * Address families. 184 */ 185#define AF_UNSPEC 0 /* unspecified */ 186#if __BSD_VISIBLE 187#define AF_LOCAL AF_UNIX /* local to host (pipes, portals) */ 188#endif 189#define AF_UNIX 1 /* standardized name for AF_LOCAL */ 190#define AF_INET 2 /* internetwork: UDP, TCP, etc. */ 191#if __BSD_VISIBLE 192#define AF_IMPLINK 3 /* arpanet imp addresses */ 193#define AF_PUP 4 /* pup protocols: e.g. BSP */ 194#define AF_CHAOS 5 /* mit CHAOS protocols */ 195#define AF_NETBIOS 6 /* SMB protocols */ 196#define AF_ISO 7 /* ISO protocols */ 197#define AF_OSI AF_ISO 198#define AF_ECMA 8 /* European computer manufacturers */ 199#define AF_DATAKIT 9 /* datakit protocols */ 200#define AF_CCITT 10 /* CCITT protocols, X.25 etc */ 201#define AF_SNA 11 /* IBM SNA */ 202#define AF_DECnet 12 /* DECnet */ 203#define AF_DLI 13 /* DEC Direct data link interface */ 204#define AF_LAT 14 /* LAT */ 205#define AF_HYLINK 15 /* NSC Hyperchannel */ 206#define AF_APPLETALK 16 /* Apple Talk */ 207#define AF_ROUTE 17 /* Internal Routing Protocol */ 208#define AF_LINK 18 /* Link layer interface */ 209#define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */ 210#define AF_COIP 20 /* connection-oriented IP, aka ST II */ 211#define AF_CNT 21 /* Computer Network Technology */ 212#define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */ 213#define AF_IPX 23 /* Novell Internet Protocol */ 214#define AF_SIP 24 /* Simple Internet Protocol */ 215#define pseudo_AF_PIP 25 /* Help Identify PIP packets */ 216#define AF_ISDN 26 /* Integrated Services Digital Network*/ 217#define AF_E164 AF_ISDN /* CCITT E.164 recommendation */ 218#define pseudo_AF_KEY 27 /* Internal key-management function */ 219#endif 220#define AF_INET6 28 /* IPv6 */ 221#if __BSD_VISIBLE 222#define AF_NATM 29 /* native ATM access */ 223#define AF_ATM 30 /* ATM */ 224#define pseudo_AF_HDRCMPLT 31 /* Used by BPF to not rewrite headers 225 * in interface output routine 226 */ 227#define AF_NETGRAPH 32 /* Netgraph sockets */ 228#define AF_SLOW 33 /* 802.3ad slow protocol */ 229#define AF_SCLUSTER 34 /* Sitara cluster protocol */ 230#define AF_ARP 35 231#define AF_BLUETOOTH 36 /* Bluetooth sockets */ 232#define AF_IEEE80211 37 /* IEEE 802.11 protocol */ 233#define AF_MAX 38 234/* 235 * When allocating a new AF_ constant, please only allocate 236 * even numbered constants for FreeBSD until 134 as odd numbered AF_ 237 * constants 39-133 are now reserved for vendors. 238 */ 239#define AF_VENDOR00 39 240#define AF_VENDOR01 41 241#define AF_VENDOR02 43 242#define AF_VENDOR03 45 243#define AF_VENDOR04 47 244#define AF_VENDOR05 49 245#define AF_VENDOR06 51 246#define AF_VENDOR07 53 247#define AF_VENDOR08 55 248#define AF_VENDOR09 57 249#define AF_VENDOR10 59 250#define AF_VENDOR11 61 251#define AF_VENDOR12 63 252#define AF_VENDOR13 65 253#define AF_VENDOR14 67 254#define AF_VENDOR15 69 255#define AF_VENDOR16 71 256#define AF_VENDOR17 73 257#define AF_VENDOR18 75 258#define AF_VENDOR19 77 259#define AF_VENDOR20 79 260#define AF_VENDOR21 81 261#define AF_VENDOR22 83 262#define AF_VENDOR23 85 263#define AF_VENDOR24 87 264#define AF_VENDOR25 89 265#define AF_VENDOR26 91 266#define AF_VENDOR27 93 267#define AF_VENDOR28 95 268#define AF_VENDOR29 97 269#define AF_VENDOR30 99 270#define AF_VENDOR31 101 271#define AF_VENDOR32 103 272#define AF_VENDOR33 105 273#define AF_VENDOR34 107 274#define AF_VENDOR35 109 275#define AF_VENDOR36 111 276#define AF_VENDOR37 113 277#define AF_VENDOR38 115 278#define AF_VENDOR39 117 279#define AF_VENDOR40 119 280#define AF_VENDOR41 121 281#define AF_VENDOR42 123 282#define AF_VENDOR43 125 283#define AF_VENDOR44 127 284#define AF_VENDOR45 129 285#define AF_VENDOR46 131 286#define AF_VENDOR47 133 287#endif 288 289/* 290 * Structure used by kernel to store most 291 * addresses. 292 */ 293struct sockaddr { 294 unsigned char sa_len; /* total length */ 295 sa_family_t sa_family; /* address family */ 296 char sa_data[14]; /* actually longer; address value */ 297}; 298#if __BSD_VISIBLE 299#define SOCK_MAXADDRLEN 255 /* longest possible addresses */ 300 301/* 302 * Structure used by kernel to pass protocol 303 * information in raw sockets. 304 */ 305struct sockproto { 306 unsigned short sp_family; /* address family */ 307 unsigned short sp_protocol; /* protocol */ 308}; 309#endif 310 311#include <sys/_sockaddr_storage.h> 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#define PF_IEEE80211 AF_IEEE80211 356 357#define PF_MAX AF_MAX 358 359/* 360 * Definitions for network related sysctl, CTL_NET. 361 * 362 * Second level is protocol family. 363 * Third level is protocol number. 364 * 365 * Further levels are defined by the individual families below. 366 */ 367#define NET_MAXID AF_MAX 368 369#define CTL_NET_NAMES { \ 370 { 0, 0 }, \ 371 { "unix", CTLTYPE_NODE }, \ 372 { "inet", CTLTYPE_NODE }, \ 373 { "implink", CTLTYPE_NODE }, \ 374 { "pup", CTLTYPE_NODE }, \ 375 { "chaos", CTLTYPE_NODE }, \ 376 { "xerox_ns", CTLTYPE_NODE }, \ 377 { "iso", CTLTYPE_NODE }, \ 378 { "emca", CTLTYPE_NODE }, \ 379 { "datakit", CTLTYPE_NODE }, \ 380 { "ccitt", CTLTYPE_NODE }, \ 381 { "ibm_sna", CTLTYPE_NODE }, \ 382 { "decnet", CTLTYPE_NODE }, \ 383 { "dec_dli", CTLTYPE_NODE }, \ 384 { "lat", CTLTYPE_NODE }, \ 385 { "hylink", CTLTYPE_NODE }, \ 386 { "appletalk", CTLTYPE_NODE }, \ 387 { "route", CTLTYPE_NODE }, \ 388 { "link_layer", CTLTYPE_NODE }, \ 389 { "xtp", CTLTYPE_NODE }, \ 390 { "coip", CTLTYPE_NODE }, \ 391 { "cnt", CTLTYPE_NODE }, \ 392 { "rtip", CTLTYPE_NODE }, \ 393 { "ipx", CTLTYPE_NODE }, \ 394 { "sip", CTLTYPE_NODE }, \ 395 { "pip", CTLTYPE_NODE }, \ 396 { "isdn", CTLTYPE_NODE }, \ 397 { "key", CTLTYPE_NODE }, \ 398 { "inet6", CTLTYPE_NODE }, \ 399 { "natm", CTLTYPE_NODE }, \ 400 { "atm", CTLTYPE_NODE }, \ 401 { "hdrcomplete", CTLTYPE_NODE }, \ 402 { "netgraph", CTLTYPE_NODE }, \ 403 { "snp", CTLTYPE_NODE }, \ 404 { "scp", CTLTYPE_NODE }, \ 405} 406 407/* 408 * PF_ROUTE - Routing table 409 * 410 * Three additional levels are defined: 411 * Fourth: address family, 0 is wildcard 412 * Fifth: type of info, defined below 413 * Sixth: flag(s) to mask with for NET_RT_FLAGS 414 */ 415#define NET_RT_DUMP 1 /* dump; may limit to a.f. */ 416#define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */ 417#define NET_RT_IFLIST 3 /* survey interface list */ 418#define NET_RT_IFMALIST 4 /* return multicast address list */ 419#define NET_RT_IFLISTL 5 /* Survey interface list, using 'l'en 420 * versions of msghdr structs. */ 421#define NET_RT_MAXID 6 422 423#define CTL_NET_RT_NAMES { \ 424 { 0, 0 }, \ 425 { "dump", CTLTYPE_STRUCT }, \ 426 { "flags", CTLTYPE_STRUCT }, \ 427 { "iflist", CTLTYPE_STRUCT }, \ 428 { "ifmalist", CTLTYPE_STRUCT }, \ 429 { "iflistl", CTLTYPE_STRUCT }, \ 430} 431#endif /* __BSD_VISIBLE */ 432 433/* 434 * Maximum queue length specifiable by listen. 435 */ 436#define SOMAXCONN 128 437 438/* 439 * Message header for recvmsg and sendmsg calls. 440 * Used value-result for recvmsg, value only for sendmsg. 441 */ 442struct msghdr { 443 void *msg_name; /* optional address */ 444 socklen_t msg_namelen; /* size of address */ 445 struct iovec *msg_iov; /* scatter/gather array */ 446 int msg_iovlen; /* # elements in msg_iov */ 447 void *msg_control; /* ancillary data, see below */ 448 socklen_t msg_controllen; /* ancillary data buffer len */ 449 int msg_flags; /* flags on received message */ 450}; 451 452#define MSG_OOB 0x1 /* process out-of-band data */ 453#define MSG_PEEK 0x2 /* peek at incoming message */ 454#define MSG_DONTROUTE 0x4 /* send without using routing tables */ 455#define MSG_EOR 0x8 /* data completes record */ 456#define MSG_TRUNC 0x10 /* data discarded before delivery */ 457#define MSG_CTRUNC 0x20 /* control data lost before delivery */ 458#define MSG_WAITALL 0x40 /* wait for full request or error */ 459#if __POSIX_VISIBLE >= 200809 460#define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */ 461#endif 462#if __BSD_VISIBLE 463#define MSG_DONTWAIT 0x80 /* this message should be nonblocking */ 464#define MSG_EOF 0x100 /* data completes connection */ 465#define MSG_NOTIFICATION 0x2000 /* SCTP notification */ 466#define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */ 467#define MSG_COMPAT 0x8000 /* used in sendit() */ 468#define MSG_CMSG_CLOEXEC 0x40000 /* make received fds close-on-exec */ 469#endif 470#ifdef _KERNEL 471#define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */ 472#endif 473 474/* 475 * Header for ancillary data objects in msg_control buffer. 476 * Used for additional information with/about a datagram 477 * not expressible by flags. The format is a sequence 478 * of message elements headed by cmsghdr structures. 479 */ 480struct cmsghdr { 481 socklen_t cmsg_len; /* data byte count, including hdr */ 482 int cmsg_level; /* originating protocol */ 483 int cmsg_type; /* protocol-specific type */ 484/* followed by u_char cmsg_data[]; */ 485}; 486 487#if __BSD_VISIBLE 488/* 489 * While we may have more groups than this, the cmsgcred struct must 490 * be able to fit in an mbuf and we have historically supported a 491 * maximum of 16 groups. 492*/ 493#define CMGROUP_MAX 16 494 495/* 496 * Credentials structure, used to verify the identity of a peer 497 * process that has sent us a message. This is allocated by the 498 * peer process but filled in by the kernel. This prevents the 499 * peer from lying about its identity. (Note that cmcred_groups[0] 500 * is the effective GID.) 501 */ 502struct cmsgcred { 503 pid_t cmcred_pid; /* PID of sending process */ 504 uid_t cmcred_uid; /* real UID of sending process */ 505 uid_t cmcred_euid; /* effective UID of sending process */ 506 gid_t cmcred_gid; /* real GID of sending process */ 507 short cmcred_ngroups; /* number or groups */ 508 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */ 509}; 510 511/* 512 * Socket credentials. 513 */ 514struct sockcred { 515 uid_t sc_uid; /* real user id */ 516 uid_t sc_euid; /* effective user id */ 517 gid_t sc_gid; /* real group id */ 518 gid_t sc_egid; /* effective group id */ 519 int sc_ngroups; /* number of supplemental groups */ 520 gid_t sc_groups[1]; /* variable length */ 521}; 522 523/* 524 * Compute size of a sockcred structure with groups. 525 */ 526#define SOCKCREDSIZE(ngrps) \ 527 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1))) 528 529#endif /* __BSD_VISIBLE */ 530 531/* given pointer to struct cmsghdr, return pointer to data */ 532#define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \ 533 _ALIGN(sizeof(struct cmsghdr))) 534 535/* given pointer to struct cmsghdr, return pointer to next cmsghdr */ 536#define CMSG_NXTHDR(mhdr, cmsg) \ 537 ((char *)(cmsg) == NULL ? CMSG_FIRSTHDR(mhdr) : \ 538 ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \ 539 _ALIGN(sizeof(struct cmsghdr)) > \ 540 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \ 541 (struct cmsghdr *)0 : \ 542 (struct cmsghdr *)(void *)((char *)(cmsg) + \ 543 _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len))) 544 545/* 546 * RFC 2292 requires to check msg_controllen, in case that the kernel returns 547 * an empty list for some reasons. 548 */ 549#define CMSG_FIRSTHDR(mhdr) \ 550 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ 551 (struct cmsghdr *)(mhdr)->msg_control : \ 552 (struct cmsghdr *)NULL) 553 554#if __BSD_VISIBLE 555/* RFC 2292 additions */ 556#define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l)) 557#define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l)) 558#endif 559 560#ifdef _KERNEL 561#define CMSG_ALIGN(n) _ALIGN(n) 562#endif 563 564/* "Socket"-level control message types: */ 565#define SCM_RIGHTS 0x01 /* access rights (array of int) */ 566#if __BSD_VISIBLE 567#define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */ 568#define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */ 569#define SCM_BINTIME 0x04 /* timestamp (struct bintime) */ 570#endif 571 572#if __BSD_VISIBLE 573/* 574 * 4.3 compat sockaddr, move to compat file later 575 */ 576struct osockaddr { 577 unsigned short sa_family; /* address family */ 578 char sa_data[14]; /* up to 14 bytes of direct address */ 579}; 580 581/* 582 * 4.3-compat message header (move to compat file later). 583 */ 584struct omsghdr { 585 char *msg_name; /* optional address */ 586 int msg_namelen; /* size of address */ 587 struct iovec *msg_iov; /* scatter/gather array */ 588 int msg_iovlen; /* # elements in msg_iov */ 589 char *msg_accrights; /* access rights sent/received */ 590 int msg_accrightslen; 591}; 592#endif 593 594/* 595 * howto arguments for shutdown(2), specified by Posix.1g. 596 */ 597#define SHUT_RD 0 /* shut down the reading side */ 598#define SHUT_WR 1 /* shut down the writing side */ 599#define SHUT_RDWR 2 /* shut down both sides */ 600 601#if __BSD_VISIBLE 602/* for SCTP */ 603/* we cheat and use the SHUT_XX defines for these */ 604#define PRU_FLUSH_RD SHUT_RD 605#define PRU_FLUSH_WR SHUT_WR 606#define PRU_FLUSH_RDWR SHUT_RDWR 607#endif 608 609 610#if __BSD_VISIBLE 611/* 612 * sendfile(2) header/trailer struct 613 */ 614struct sf_hdtr { 615 struct iovec *headers; /* pointer to an array of header struct iovec's */ 616 int hdr_cnt; /* number of header iovec's */ 617 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */ 618 int trl_cnt; /* number of trailer iovec's */ 619}; 620 621/* 622 * Sendfile-specific flag(s) 623 */ 624#define SF_NODISKIO 0x00000001 625#define SF_MNOWAIT 0x00000002 626#define SF_SYNC 0x00000004 627#endif 628 629#ifndef _KERNEL 630 631#include <sys/cdefs.h> 632 633__BEGIN_DECLS 634int accept(int, struct sockaddr * __restrict, socklen_t * __restrict); 635int bind(int, const struct sockaddr *, socklen_t); 636int connect(int, const struct sockaddr *, socklen_t); 637#if __BSD_VISIBLE 638int accept4(int, struct sockaddr * __restrict, socklen_t * __restrict, int); 639int bindat(int, int, const struct sockaddr *, socklen_t); 640int connectat(int, int, const struct sockaddr *, socklen_t); 641#endif 642int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict); 643int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict); 644int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict); 645int listen(int, int); 646ssize_t recv(int, void *, size_t, int); 647ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict); 648ssize_t recvmsg(int, struct msghdr *, int); 649ssize_t send(int, const void *, size_t, int); 650ssize_t sendto(int, const void *, 651 size_t, int, const struct sockaddr *, socklen_t); 652ssize_t sendmsg(int, const struct msghdr *, int); 653#if __BSD_VISIBLE 654int sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int); 655int setfib(int); 656#endif 657int setsockopt(int, int, int, const void *, socklen_t); 658int shutdown(int, int); 659int sockatmark(int); 660int socket(int, int, int); 661int socketpair(int, int, int, int *); 662__END_DECLS 663 664#endif /* !_KERNEL */ 665 666#ifdef _KERNEL 667struct socket; 668 669struct tcpcb *so_sototcpcb(struct socket *so); 670struct inpcb *so_sotoinpcb(struct socket *so); 671struct sockbuf *so_sockbuf_snd(struct socket *); 672struct sockbuf *so_sockbuf_rcv(struct socket *); 673 674int so_state_get(const struct socket *); 675void so_state_set(struct socket *, int); 676 677int so_options_get(const struct socket *); 678void so_options_set(struct socket *, int); 679 680int so_error_get(const struct socket *); 681void so_error_set(struct socket *, int); 682 683int so_linger_get(const struct socket *); 684void so_linger_set(struct socket *, int); 685 686struct protosw *so_protosw_get(const struct socket *); 687void so_protosw_set(struct socket *, struct protosw *); 688 689void so_sorwakeup_locked(struct socket *so); 690void so_sowwakeup_locked(struct socket *so); 691 692void so_sorwakeup(struct socket *so); 693void so_sowwakeup(struct socket *so); 694 695void so_lock(struct socket *so); 696void so_unlock(struct socket *so); 697 698void so_listeners_apply_all(struct socket *so, void (*func)(struct socket *, void *), void *arg); 699 700#endif 701 702 703#endif /* !_SYS_SOCKET_H_ */ 704