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: stable/11/sys/sys/socket.h 338617 2018-09-12 18:52:18Z sobomax $ 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#ifndef _UINT32_T_DECLARED 88typedef __uint32_t uint32_t; 89#define _UINT32_T_DECLARED 90#endif 91 92#ifndef _UINTPTR_T_DECLARED 93typedef __uintptr_t uintptr_t; 94#define _UINTPTR_T_DECLARED 95#endif 96 97/* 98 * Types 99 */ 100#define SOCK_STREAM 1 /* stream socket */ 101#define SOCK_DGRAM 2 /* datagram socket */ 102#define SOCK_RAW 3 /* raw-protocol interface */ 103#if __BSD_VISIBLE 104#define SOCK_RDM 4 /* reliably-delivered message */ 105#endif 106#define SOCK_SEQPACKET 5 /* sequenced packet stream */ 107 108#if __BSD_VISIBLE 109/* 110 * Creation flags, OR'ed into socket() and socketpair() type argument. 111 */ 112#define SOCK_CLOEXEC 0x10000000 113#define SOCK_NONBLOCK 0x20000000 114#endif 115 116/* 117 * Option flags per-socket. 118 */ 119#define SO_DEBUG 0x0001 /* turn on debugging info recording */ 120#define SO_ACCEPTCONN 0x0002 /* socket has had listen() */ 121#define SO_REUSEADDR 0x0004 /* allow local address reuse */ 122#define SO_KEEPALIVE 0x0008 /* keep connections alive */ 123#define SO_DONTROUTE 0x0010 /* just use interface addresses */ 124#define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */ 125#if __BSD_VISIBLE 126#define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */ 127#endif 128#define SO_LINGER 0x0080 /* linger on close if data present */ 129#define SO_OOBINLINE 0x0100 /* leave received OOB data in line */ 130#if __BSD_VISIBLE 131#define SO_REUSEPORT 0x0200 /* allow local address & port reuse */ 132#define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */ 133#define SO_NOSIGPIPE 0x0800 /* no SIGPIPE from EPIPE */ 134#define SO_ACCEPTFILTER 0x1000 /* there is an accept filter */ 135#define SO_BINTIME 0x2000 /* timestamp received dgram traffic */ 136#endif 137#define SO_NO_OFFLOAD 0x4000 /* socket cannot be offloaded */ 138#define SO_NO_DDP 0x8000 /* disable direct data placement */ 139 140/* 141 * Additional options, not kept in so_options. 142 */ 143#define SO_SNDBUF 0x1001 /* send buffer size */ 144#define SO_RCVBUF 0x1002 /* receive buffer size */ 145#define SO_SNDLOWAT 0x1003 /* send low-water mark */ 146#define SO_RCVLOWAT 0x1004 /* receive low-water mark */ 147#define SO_SNDTIMEO 0x1005 /* send timeout */ 148#define SO_RCVTIMEO 0x1006 /* receive timeout */ 149#define SO_ERROR 0x1007 /* get error status and clear */ 150#define SO_TYPE 0x1008 /* get socket type */ 151#if __BSD_VISIBLE 152#define SO_LABEL 0x1009 /* socket's MAC label */ 153#define SO_PEERLABEL 0x1010 /* socket's peer's MAC label */ 154#define SO_LISTENQLIMIT 0x1011 /* socket's backlog limit */ 155#define SO_LISTENQLEN 0x1012 /* socket's complete queue length */ 156#define SO_LISTENINCQLEN 0x1013 /* socket's incomplete queue length */ 157#define SO_SETFIB 0x1014 /* use this FIB to route */ 158#define SO_USER_COOKIE 0x1015 /* user cookie (dummynet etc.) */ 159#define SO_PROTOCOL 0x1016 /* get socket protocol (Linux name) */ 160#define SO_PROTOTYPE SO_PROTOCOL /* alias for SO_PROTOCOL (SunOS name) */ 161#define SO_TS_CLOCK 0x1017 /* clock type used for SO_TIMESTAMP */ 162#endif 163 164#if __BSD_VISIBLE 165#define SO_TS_REALTIME_MICRO 0 /* microsecond resolution, realtime */ 166#define SO_TS_BINTIME 1 /* sub-nanosecond resolution, realtime */ 167#define SO_TS_REALTIME 2 /* nanosecond resolution, realtime */ 168#define SO_TS_MONOTONIC 3 /* nanosecond resolution, monotonic */ 169#define SO_TS_DEFAULT SO_TS_REALTIME_MICRO 170#define SO_TS_CLOCK_MAX SO_TS_MONOTONIC 171#endif 172 173/* 174 * Space reserved for new socket options added by third-party vendors. 175 * This range applies to all socket option levels. New socket options 176 * in FreeBSD should always use an option value less than SO_VENDOR. 177 */ 178#if __BSD_VISIBLE 179#define SO_VENDOR 0x80000000 180#endif 181 182/* 183 * Structure used for manipulating linger option. 184 */ 185struct linger { 186 int l_onoff; /* option on/off */ 187 int l_linger; /* linger time */ 188}; 189 190#if __BSD_VISIBLE 191struct accept_filter_arg { 192 char af_name[16]; 193 char af_arg[256-16]; 194}; 195#endif 196 197/* 198 * Level number for (get/set)sockopt() to apply to socket itself. 199 */ 200#define SOL_SOCKET 0xffff /* options for socket level */ 201 202/* 203 * Address families. 204 */ 205#define AF_UNSPEC 0 /* unspecified */ 206#if __BSD_VISIBLE 207#define AF_LOCAL AF_UNIX /* local to host (pipes, portals) */ 208#endif 209#define AF_UNIX 1 /* standardized name for AF_LOCAL */ 210#define AF_INET 2 /* internetwork: UDP, TCP, etc. */ 211#if __BSD_VISIBLE 212#define AF_IMPLINK 3 /* arpanet imp addresses */ 213#define AF_PUP 4 /* pup protocols: e.g. BSP */ 214#define AF_CHAOS 5 /* mit CHAOS protocols */ 215#define AF_NETBIOS 6 /* SMB protocols */ 216#define AF_ISO 7 /* ISO protocols */ 217#define AF_OSI AF_ISO 218#define AF_ECMA 8 /* European computer manufacturers */ 219#define AF_DATAKIT 9 /* datakit protocols */ 220#define AF_CCITT 10 /* CCITT protocols, X.25 etc */ 221#define AF_SNA 11 /* IBM SNA */ 222#define AF_DECnet 12 /* DECnet */ 223#define AF_DLI 13 /* DEC Direct data link interface */ 224#define AF_LAT 14 /* LAT */ 225#define AF_HYLINK 15 /* NSC Hyperchannel */ 226#define AF_APPLETALK 16 /* Apple Talk */ 227#define AF_ROUTE 17 /* Internal Routing Protocol */ 228#define AF_LINK 18 /* Link layer interface */ 229#define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */ 230#define AF_COIP 20 /* connection-oriented IP, aka ST II */ 231#define AF_CNT 21 /* Computer Network Technology */ 232#define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */ 233#define AF_IPX 23 /* Novell Internet Protocol */ 234#define AF_SIP 24 /* Simple Internet Protocol */ 235#define pseudo_AF_PIP 25 /* Help Identify PIP packets */ 236#define AF_ISDN 26 /* Integrated Services Digital Network*/ 237#define AF_E164 AF_ISDN /* CCITT E.164 recommendation */ 238#define pseudo_AF_KEY 27 /* Internal key-management function */ 239#endif 240#define AF_INET6 28 /* IPv6 */ 241#if __BSD_VISIBLE 242#define AF_NATM 29 /* native ATM access */ 243#define AF_ATM 30 /* ATM */ 244#define pseudo_AF_HDRCMPLT 31 /* Used by BPF to not rewrite headers 245 * in interface output routine 246 */ 247#define AF_NETGRAPH 32 /* Netgraph sockets */ 248#define AF_SLOW 33 /* 802.3ad slow protocol */ 249#define AF_SCLUSTER 34 /* Sitara cluster protocol */ 250#define AF_ARP 35 251#define AF_BLUETOOTH 36 /* Bluetooth sockets */ 252#define AF_IEEE80211 37 /* IEEE 802.11 protocol */ 253#define AF_INET_SDP 40 /* OFED Socket Direct Protocol ipv4 */ 254#define AF_INET6_SDP 42 /* OFED Socket Direct Protocol ipv6 */ 255#define AF_MAX 42 256/* 257 * When allocating a new AF_ constant, please only allocate 258 * even numbered constants for FreeBSD until 134 as odd numbered AF_ 259 * constants 39-133 are now reserved for vendors. 260 */ 261#define AF_VENDOR00 39 262#define AF_VENDOR01 41 263#define AF_VENDOR02 43 264#define AF_VENDOR03 45 265#define AF_VENDOR04 47 266#define AF_VENDOR05 49 267#define AF_VENDOR06 51 268#define AF_VENDOR07 53 269#define AF_VENDOR08 55 270#define AF_VENDOR09 57 271#define AF_VENDOR10 59 272#define AF_VENDOR11 61 273#define AF_VENDOR12 63 274#define AF_VENDOR13 65 275#define AF_VENDOR14 67 276#define AF_VENDOR15 69 277#define AF_VENDOR16 71 278#define AF_VENDOR17 73 279#define AF_VENDOR18 75 280#define AF_VENDOR19 77 281#define AF_VENDOR20 79 282#define AF_VENDOR21 81 283#define AF_VENDOR22 83 284#define AF_VENDOR23 85 285#define AF_VENDOR24 87 286#define AF_VENDOR25 89 287#define AF_VENDOR26 91 288#define AF_VENDOR27 93 289#define AF_VENDOR28 95 290#define AF_VENDOR29 97 291#define AF_VENDOR30 99 292#define AF_VENDOR31 101 293#define AF_VENDOR32 103 294#define AF_VENDOR33 105 295#define AF_VENDOR34 107 296#define AF_VENDOR35 109 297#define AF_VENDOR36 111 298#define AF_VENDOR37 113 299#define AF_VENDOR38 115 300#define AF_VENDOR39 117 301#define AF_VENDOR40 119 302#define AF_VENDOR41 121 303#define AF_VENDOR42 123 304#define AF_VENDOR43 125 305#define AF_VENDOR44 127 306#define AF_VENDOR45 129 307#define AF_VENDOR46 131 308#define AF_VENDOR47 133 309#endif 310 311/* 312 * Structure used by kernel to store most 313 * addresses. 314 */ 315struct sockaddr { 316 unsigned char sa_len; /* total length */ 317 sa_family_t sa_family; /* address family */ 318 char sa_data[14]; /* actually longer; address value */ 319}; 320#if __BSD_VISIBLE 321#define SOCK_MAXADDRLEN 255 /* longest possible addresses */ 322 323/* 324 * Structure used by kernel to pass protocol 325 * information in raw sockets. 326 */ 327struct sockproto { 328 unsigned short sp_family; /* address family */ 329 unsigned short sp_protocol; /* protocol */ 330}; 331#endif 332 333#include <sys/_sockaddr_storage.h> 334 335#if __BSD_VISIBLE 336/* 337 * Protocol families, same as address families for now. 338 */ 339#define PF_UNSPEC AF_UNSPEC 340#define PF_LOCAL AF_LOCAL 341#define PF_UNIX PF_LOCAL /* backward compatibility */ 342#define PF_INET AF_INET 343#define PF_IMPLINK AF_IMPLINK 344#define PF_PUP AF_PUP 345#define PF_CHAOS AF_CHAOS 346#define PF_NETBIOS AF_NETBIOS 347#define PF_ISO AF_ISO 348#define PF_OSI AF_ISO 349#define PF_ECMA AF_ECMA 350#define PF_DATAKIT AF_DATAKIT 351#define PF_CCITT AF_CCITT 352#define PF_SNA AF_SNA 353#define PF_DECnet AF_DECnet 354#define PF_DLI AF_DLI 355#define PF_LAT AF_LAT 356#define PF_HYLINK AF_HYLINK 357#define PF_APPLETALK AF_APPLETALK 358#define PF_ROUTE AF_ROUTE 359#define PF_LINK AF_LINK 360#define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */ 361#define PF_COIP AF_COIP 362#define PF_CNT AF_CNT 363#define PF_SIP AF_SIP 364#define PF_IPX AF_IPX 365#define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */ 366#define PF_PIP pseudo_AF_PIP 367#define PF_ISDN AF_ISDN 368#define PF_KEY pseudo_AF_KEY 369#define PF_INET6 AF_INET6 370#define PF_NATM AF_NATM 371#define PF_ATM AF_ATM 372#define PF_NETGRAPH AF_NETGRAPH 373#define PF_SLOW AF_SLOW 374#define PF_SCLUSTER AF_SCLUSTER 375#define PF_ARP AF_ARP 376#define PF_BLUETOOTH AF_BLUETOOTH 377#define PF_IEEE80211 AF_IEEE80211 378#define PF_INET_SDP AF_INET_SDP 379#define PF_INET6_SDP AF_INET6_SDP 380 381#define PF_MAX AF_MAX 382 383/* 384 * Definitions for network related sysctl, CTL_NET. 385 * 386 * Second level is protocol family. 387 * Third level is protocol number. 388 * 389 * Further levels are defined by the individual families. 390 */ 391 392/* 393 * PF_ROUTE - Routing table 394 * 395 * Three additional levels are defined: 396 * Fourth: address family, 0 is wildcard 397 * Fifth: type of info, defined below 398 * Sixth: flag(s) to mask with for NET_RT_FLAGS 399 */ 400#define NET_RT_DUMP 1 /* dump; may limit to a.f. */ 401#define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */ 402#define NET_RT_IFLIST 3 /* survey interface list */ 403#define NET_RT_IFMALIST 4 /* return multicast address list */ 404#define NET_RT_IFLISTL 5 /* Survey interface list, using 'l'en 405 * versions of msghdr structs. */ 406#endif /* __BSD_VISIBLE */ 407 408/* 409 * Maximum queue length specifiable by listen. 410 */ 411#define SOMAXCONN 128 412 413/* 414 * Message header for recvmsg and sendmsg calls. 415 * Used value-result for recvmsg, value only for sendmsg. 416 */ 417struct msghdr { 418 void *msg_name; /* optional address */ 419 socklen_t msg_namelen; /* size of address */ 420 struct iovec *msg_iov; /* scatter/gather array */ 421 int msg_iovlen; /* # elements in msg_iov */ 422 void *msg_control; /* ancillary data, see below */ 423 socklen_t msg_controllen; /* ancillary data buffer len */ 424 int msg_flags; /* flags on received message */ 425}; 426 427#define MSG_OOB 0x1 /* process out-of-band data */ 428#define MSG_PEEK 0x2 /* peek at incoming message */ 429#define MSG_DONTROUTE 0x4 /* send without using routing tables */ 430#define MSG_EOR 0x8 /* data completes record */ 431#define MSG_TRUNC 0x10 /* data discarded before delivery */ 432#define MSG_CTRUNC 0x20 /* control data lost before delivery */ 433#define MSG_WAITALL 0x40 /* wait for full request or error */ 434#if __POSIX_VISIBLE >= 200809 435#define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */ 436#endif 437#if __BSD_VISIBLE 438#define MSG_DONTWAIT 0x80 /* this message should be nonblocking */ 439#define MSG_EOF 0x100 /* data completes connection */ 440#define MSG_NOTIFICATION 0x2000 /* SCTP notification */ 441#define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */ 442#define MSG_COMPAT 0x8000 /* used in sendit() */ 443#define MSG_CMSG_CLOEXEC 0x40000 /* make received fds close-on-exec */ 444#define MSG_WAITFORONE 0x80000 /* for recvmmsg() */ 445#endif 446#ifdef _KERNEL 447#define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */ 448#define MSG_MORETOCOME 0x100000 /* additional data pending */ 449#endif 450 451/* 452 * Header for ancillary data objects in msg_control buffer. 453 * Used for additional information with/about a datagram 454 * not expressible by flags. The format is a sequence 455 * of message elements headed by cmsghdr structures. 456 */ 457struct cmsghdr { 458 socklen_t cmsg_len; /* data byte count, including hdr */ 459 int cmsg_level; /* originating protocol */ 460 int cmsg_type; /* protocol-specific type */ 461/* followed by u_char cmsg_data[]; */ 462}; 463 464#if __BSD_VISIBLE 465/* 466 * While we may have more groups than this, the cmsgcred struct must 467 * be able to fit in an mbuf and we have historically supported a 468 * maximum of 16 groups. 469*/ 470#define CMGROUP_MAX 16 471 472/* 473 * Credentials structure, used to verify the identity of a peer 474 * process that has sent us a message. This is allocated by the 475 * peer process but filled in by the kernel. This prevents the 476 * peer from lying about its identity. (Note that cmcred_groups[0] 477 * is the effective GID.) 478 */ 479struct cmsgcred { 480 pid_t cmcred_pid; /* PID of sending process */ 481 uid_t cmcred_uid; /* real UID of sending process */ 482 uid_t cmcred_euid; /* effective UID of sending process */ 483 gid_t cmcred_gid; /* real GID of sending process */ 484 short cmcred_ngroups; /* number or groups */ 485 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */ 486}; 487 488/* 489 * Socket credentials. 490 */ 491struct sockcred { 492 uid_t sc_uid; /* real user id */ 493 uid_t sc_euid; /* effective user id */ 494 gid_t sc_gid; /* real group id */ 495 gid_t sc_egid; /* effective group id */ 496 int sc_ngroups; /* number of supplemental groups */ 497 gid_t sc_groups[1]; /* variable length */ 498}; 499 500/* 501 * Compute size of a sockcred structure with groups. 502 */ 503#define SOCKCREDSIZE(ngrps) \ 504 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1))) 505 506#endif /* __BSD_VISIBLE */ 507 508/* given pointer to struct cmsghdr, return pointer to data */ 509#define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \ 510 _ALIGN(sizeof(struct cmsghdr))) 511 512/* given pointer to struct cmsghdr, return pointer to next cmsghdr */ 513#define CMSG_NXTHDR(mhdr, cmsg) \ 514 ((char *)(cmsg) == (char *)0 ? CMSG_FIRSTHDR(mhdr) : \ 515 ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \ 516 _ALIGN(sizeof(struct cmsghdr)) > \ 517 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \ 518 (struct cmsghdr *)0 : \ 519 (struct cmsghdr *)(void *)((char *)(cmsg) + \ 520 _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len))) 521 522/* 523 * RFC 2292 requires to check msg_controllen, in case that the kernel returns 524 * an empty list for some reasons. 525 */ 526#define CMSG_FIRSTHDR(mhdr) \ 527 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ 528 (struct cmsghdr *)(mhdr)->msg_control : \ 529 (struct cmsghdr *)0) 530 531#if __BSD_VISIBLE 532/* RFC 2292 additions */ 533#define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l)) 534#define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l)) 535#endif 536 537#ifdef _KERNEL 538#define CMSG_ALIGN(n) _ALIGN(n) 539#endif 540 541/* "Socket"-level control message types: */ 542#define SCM_RIGHTS 0x01 /* access rights (array of int) */ 543#if __BSD_VISIBLE 544#define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */ 545#define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */ 546#define SCM_BINTIME 0x04 /* timestamp (struct bintime) */ 547#define SCM_REALTIME 0x05 /* timestamp (struct timespec) */ 548#define SCM_MONOTONIC 0x06 /* timestamp (struct timespec) */ 549#endif 550 551#if __BSD_VISIBLE 552/* 553 * 4.3 compat sockaddr, move to compat file later 554 */ 555struct osockaddr { 556 unsigned short sa_family; /* address family */ 557 char sa_data[14]; /* up to 14 bytes of direct address */ 558}; 559 560/* 561 * 4.3-compat message header (move to compat file later). 562 */ 563struct omsghdr { 564 char *msg_name; /* optional address */ 565 int msg_namelen; /* size of address */ 566 struct iovec *msg_iov; /* scatter/gather array */ 567 int msg_iovlen; /* # elements in msg_iov */ 568 char *msg_accrights; /* access rights sent/received */ 569 int msg_accrightslen; 570}; 571#endif 572 573/* 574 * howto arguments for shutdown(2), specified by Posix.1g. 575 */ 576#define SHUT_RD 0 /* shut down the reading side */ 577#define SHUT_WR 1 /* shut down the writing side */ 578#define SHUT_RDWR 2 /* shut down both sides */ 579 580#if __BSD_VISIBLE 581/* for SCTP */ 582/* we cheat and use the SHUT_XX defines for these */ 583#define PRU_FLUSH_RD SHUT_RD 584#define PRU_FLUSH_WR SHUT_WR 585#define PRU_FLUSH_RDWR SHUT_RDWR 586#endif 587 588 589#if __BSD_VISIBLE 590/* 591 * sendfile(2) header/trailer struct 592 */ 593struct sf_hdtr { 594 struct iovec *headers; /* pointer to an array of header struct iovec's */ 595 int hdr_cnt; /* number of header iovec's */ 596 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */ 597 int trl_cnt; /* number of trailer iovec's */ 598}; 599 600/* 601 * Sendfile-specific flag(s) 602 */ 603#define SF_NODISKIO 0x00000001 604#define SF_MNOWAIT 0x00000002 /* obsolete */ 605#define SF_SYNC 0x00000004 606#define SF_NOCACHE 0x00000010 607#define SF_FLAGS(rh, flags) (((rh) << 16) | (flags)) 608 609#ifdef _KERNEL 610#define SF_READAHEAD(flags) ((flags) >> 16) 611#endif /* _KERNEL */ 612 613/* 614 * Sendmmsg/recvmmsg specific structure(s) 615 */ 616struct mmsghdr { 617 struct msghdr msg_hdr; /* message header */ 618 ssize_t msg_len; /* message length */ 619}; 620#endif /* __BSD_VISIBLE */ 621 622#ifndef _KERNEL 623 624#include <sys/cdefs.h> 625 626__BEGIN_DECLS 627int accept(int, struct sockaddr * __restrict, socklen_t * __restrict); 628int bind(int, const struct sockaddr *, socklen_t); 629int connect(int, const struct sockaddr *, socklen_t); 630#if __BSD_VISIBLE 631int accept4(int, struct sockaddr * __restrict, socklen_t * __restrict, int); 632int bindat(int, int, const struct sockaddr *, socklen_t); 633int connectat(int, int, const struct sockaddr *, socklen_t); 634#endif 635int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict); 636int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict); 637int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict); 638int listen(int, int); 639ssize_t recv(int, void *, size_t, int); 640ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict); 641ssize_t recvmsg(int, struct msghdr *, int); 642#if __BSD_VISIBLE 643struct timespec; 644ssize_t recvmmsg(int, struct mmsghdr * __restrict, size_t, int, 645 const struct timespec * __restrict); 646#endif 647ssize_t send(int, const void *, size_t, int); 648ssize_t sendto(int, const void *, 649 size_t, int, const struct sockaddr *, socklen_t); 650ssize_t sendmsg(int, const struct msghdr *, int); 651#if __BSD_VISIBLE 652int sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int); 653ssize_t sendmmsg(int, struct mmsghdr * __restrict, size_t, int); 654int setfib(int); 655#endif 656int setsockopt(int, int, int, const void *, socklen_t); 657int shutdown(int, int); 658int sockatmark(int); 659int socket(int, int, int); 660int socketpair(int, int, int, int *); 661__END_DECLS 662 663#endif /* !_KERNEL */ 664 665#ifdef _KERNEL 666struct socket; 667 668struct tcpcb *so_sototcpcb(struct socket *so); 669struct inpcb *so_sotoinpcb(struct socket *so); 670struct sockbuf *so_sockbuf_snd(struct socket *); 671struct sockbuf *so_sockbuf_rcv(struct socket *); 672 673int so_state_get(const struct socket *); 674void so_state_set(struct socket *, int); 675 676int so_options_get(const struct socket *); 677void so_options_set(struct socket *, int); 678 679int so_error_get(const struct socket *); 680void so_error_set(struct socket *, int); 681 682int so_linger_get(const struct socket *); 683void so_linger_set(struct socket *, int); 684 685struct protosw *so_protosw_get(const struct socket *); 686void so_protosw_set(struct socket *, struct protosw *); 687 688void so_sorwakeup_locked(struct socket *so); 689void so_sowwakeup_locked(struct socket *so); 690 691void so_sorwakeup(struct socket *so); 692void so_sowwakeup(struct socket *so); 693 694void so_lock(struct socket *so); 695void so_unlock(struct socket *so); 696 697void so_listeners_apply_all(struct socket *so, void (*func)(struct socket *, void *), void *arg); 698 699#endif 700 701 702#endif /* !_SYS_SOCKET_H_ */ 703