1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#ifndef _SYS_SOCKET_H_ 33#define _SYS_SOCKET_H_ 34 35#include <sys/cdefs.h> 36#include <sys/_types.h> 37#include <sys/_iovec.h> 38#include <machine/_align.h> 39 40/* 41 * Definitions related to sockets: types, address families, options. 42 */ 43 44/* 45 * Data types. 46 */ 47#if __BSD_VISIBLE 48#ifndef _GID_T_DECLARED 49typedef __gid_t gid_t; 50#define _GID_T_DECLARED 51#endif 52 53#ifndef _OFF_T_DECLARED 54typedef __off_t off_t; 55#define _OFF_T_DECLARED 56#endif 57 58#ifndef _PID_T_DECLARED 59typedef __pid_t pid_t; 60#define _PID_T_DECLARED 61#endif 62#endif 63 64#ifndef _SA_FAMILY_T_DECLARED 65typedef __sa_family_t sa_family_t; 66#define _SA_FAMILY_T_DECLARED 67#endif 68 69#ifndef _SOCKLEN_T_DECLARED 70typedef __socklen_t socklen_t; 71#define _SOCKLEN_T_DECLARED 72#endif 73 74#ifndef _SSIZE_T_DECLARED 75typedef __ssize_t ssize_t; 76#define _SSIZE_T_DECLARED 77#endif 78 79#if __BSD_VISIBLE 80#ifndef _UID_T_DECLARED 81typedef __uid_t uid_t; 82#define _UID_T_DECLARED 83#endif 84#endif 85 86#ifndef _UINT32_T_DECLARED 87typedef __uint32_t uint32_t; 88#define _UINT32_T_DECLARED 89#endif 90 91#ifndef _UINTPTR_T_DECLARED 92typedef __uintptr_t uintptr_t; 93#define _UINTPTR_T_DECLARED 94#endif 95 96/* 97 * Types 98 */ 99#define SOCK_STREAM 1 /* stream socket */ 100#define SOCK_DGRAM 2 /* datagram socket */ 101#define SOCK_RAW 3 /* raw-protocol interface */ 102#if __BSD_VISIBLE 103#define SOCK_RDM 4 /* reliably-delivered message */ 104#endif 105#define SOCK_SEQPACKET 5 /* sequenced packet stream */ 106 107#if __BSD_VISIBLE 108/* 109 * Creation flags, OR'ed into socket() and socketpair() type argument. 110 */ 111#define SOCK_CLOEXEC 0x10000000 112#define SOCK_NONBLOCK 0x20000000 113#ifdef _KERNEL 114/* 115 * Flags for accept1(), kern_accept4() and solisten_dequeue, in addition 116 * to SOCK_CLOEXEC and SOCK_NONBLOCK. 117 */ 118#define ACCEPT4_INHERIT 0x1 119#define ACCEPT4_COMPAT 0x2 120#endif /* _KERNEL */ 121#endif /* __BSD_VISIBLE */ 122 123/* 124 * Option flags per-socket. 125 */ 126#define SO_DEBUG 0x00000001 /* turn on debugging info recording */ 127#define SO_ACCEPTCONN 0x00000002 /* socket has had listen() */ 128#define SO_REUSEADDR 0x00000004 /* allow local address reuse */ 129#define SO_KEEPALIVE 0x00000008 /* keep connections alive */ 130#define SO_DONTROUTE 0x00000010 /* just use interface addresses */ 131#define SO_BROADCAST 0x00000020 /* permit sending of broadcast msgs */ 132#if __BSD_VISIBLE 133#define SO_USELOOPBACK 0x00000040 /* bypass hardware when possible */ 134#endif 135#define SO_LINGER 0x00000080 /* linger on close if data present */ 136#define SO_OOBINLINE 0x00000100 /* leave received OOB data in line */ 137#if __BSD_VISIBLE 138#define SO_REUSEPORT 0x00000200 /* allow local address & port reuse */ 139#define SO_TIMESTAMP 0x00000400 /* timestamp received dgram traffic */ 140#define SO_NOSIGPIPE 0x00000800 /* no SIGPIPE from EPIPE */ 141#define SO_ACCEPTFILTER 0x00001000 /* there is an accept filter */ 142#define SO_BINTIME 0x00002000 /* timestamp received dgram traffic */ 143#endif 144#define SO_NO_OFFLOAD 0x00004000 /* socket cannot be offloaded */ 145#define SO_NO_DDP 0x00008000 /* disable direct data placement */ 146#define SO_REUSEPORT_LB 0x00010000 /* reuse with load balancing */ 147#define SO_RERROR 0x00020000 /* keep track of receive errors */ 148 149/* 150 * Additional options, not kept in so_options. 151 */ 152#define SO_SNDBUF 0x1001 /* send buffer size */ 153#define SO_RCVBUF 0x1002 /* receive buffer size */ 154#define SO_SNDLOWAT 0x1003 /* send low-water mark */ 155#define SO_RCVLOWAT 0x1004 /* receive low-water mark */ 156#define SO_SNDTIMEO 0x1005 /* send timeout */ 157#define SO_RCVTIMEO 0x1006 /* receive timeout */ 158#define SO_ERROR 0x1007 /* get error status and clear */ 159#define SO_TYPE 0x1008 /* get socket type */ 160#if __BSD_VISIBLE 161#define SO_LABEL 0x1009 /* socket's MAC label */ 162#define SO_PEERLABEL 0x1010 /* socket's peer's MAC label */ 163#define SO_LISTENQLIMIT 0x1011 /* socket's backlog limit */ 164#define SO_LISTENQLEN 0x1012 /* socket's complete queue length */ 165#define SO_LISTENINCQLEN 0x1013 /* socket's incomplete queue length */ 166#define SO_SETFIB 0x1014 /* use this FIB to route */ 167#define SO_USER_COOKIE 0x1015 /* user cookie (dummynet etc.) */ 168#define SO_PROTOCOL 0x1016 /* get socket protocol (Linux name) */ 169#define SO_PROTOTYPE SO_PROTOCOL /* alias for SO_PROTOCOL (SunOS name) */ 170#define SO_TS_CLOCK 0x1017 /* clock type used for SO_TIMESTAMP */ 171#define SO_MAX_PACING_RATE 0x1018 /* socket's max TX pacing rate (Linux name) */ 172#define SO_DOMAIN 0x1019 /* get socket domain */ 173#endif 174 175#if __BSD_VISIBLE 176#define SO_TS_REALTIME_MICRO 0 /* microsecond resolution, realtime */ 177#define SO_TS_BINTIME 1 /* sub-nanosecond resolution, realtime */ 178#define SO_TS_REALTIME 2 /* nanosecond resolution, realtime */ 179#define SO_TS_MONOTONIC 3 /* nanosecond resolution, monotonic */ 180#define SO_TS_DEFAULT SO_TS_REALTIME_MICRO 181#define SO_TS_CLOCK_MAX SO_TS_MONOTONIC 182#endif 183 184/* 185 * Space reserved for new socket options added by third-party vendors. 186 * This range applies to all socket option levels. New socket options 187 * in FreeBSD should always use an option value less than SO_VENDOR. 188 */ 189#if __BSD_VISIBLE 190#define SO_VENDOR 0x80000000 191#endif 192 193/* 194 * Structure used for manipulating linger option. 195 */ 196struct linger { 197 int l_onoff; /* option on/off */ 198 int l_linger; /* linger time */ 199}; 200 201#if __BSD_VISIBLE 202struct accept_filter_arg { 203 char af_name[16]; 204 char af_arg[256-16]; 205}; 206#endif 207 208/* 209 * Level number for (get/set)sockopt() to apply to socket itself. 210 */ 211#define SOL_SOCKET 0xffff /* options for socket level */ 212 213/* 214 * Address families. 215 */ 216#define AF_UNSPEC 0 /* unspecified */ 217#if __BSD_VISIBLE 218#define AF_LOCAL AF_UNIX /* local to host (pipes, portals) */ 219#endif 220#define AF_UNIX 1 /* standardized name for AF_LOCAL */ 221#define AF_INET 2 /* internetwork: UDP, TCP, etc. */ 222#if __BSD_VISIBLE 223#define AF_IMPLINK 3 /* arpanet imp addresses */ 224#define AF_PUP 4 /* pup protocols: e.g. BSP */ 225#define AF_CHAOS 5 /* mit CHAOS protocols */ 226#define AF_NETBIOS 6 /* SMB protocols */ 227#define AF_ISO 7 /* ISO protocols */ 228#define AF_OSI AF_ISO 229#define AF_ECMA 8 /* European computer manufacturers */ 230#define AF_DATAKIT 9 /* datakit protocols */ 231#define AF_CCITT 10 /* CCITT protocols, X.25 etc */ 232#define AF_SNA 11 /* IBM SNA */ 233#define AF_DECnet 12 /* DECnet */ 234#define AF_DLI 13 /* DEC Direct data link interface */ 235#define AF_LAT 14 /* LAT */ 236#define AF_HYLINK 15 /* NSC Hyperchannel */ 237#define AF_APPLETALK 16 /* Apple Talk */ 238#define AF_ROUTE 17 /* Internal Routing Protocol */ 239#define AF_LINK 18 /* Link layer interface */ 240#define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */ 241#define AF_COIP 20 /* connection-oriented IP, aka ST II */ 242#define AF_CNT 21 /* Computer Network Technology */ 243#define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */ 244#define AF_IPX 23 /* Novell Internet Protocol */ 245#define AF_SIP 24 /* Simple Internet Protocol */ 246#define pseudo_AF_PIP 25 /* Help Identify PIP packets */ 247#define AF_ISDN 26 /* Integrated Services Digital Network*/ 248#define AF_E164 AF_ISDN /* CCITT E.164 recommendation */ 249#define pseudo_AF_KEY 27 /* Internal key-management function */ 250#endif 251#define AF_INET6 28 /* IPv6 */ 252#if __BSD_VISIBLE 253#define AF_NATM 29 /* native ATM access */ 254#define AF_ATM 30 /* ATM */ 255#define pseudo_AF_HDRCMPLT 31 /* Used by BPF to not rewrite headers 256 * in interface output routine 257 */ 258#define AF_NETGRAPH 32 /* Netgraph sockets */ 259#define AF_SLOW 33 /* 802.3ad slow protocol */ 260#define AF_SCLUSTER 34 /* Sitara cluster protocol */ 261#define AF_ARP 35 262#define AF_BLUETOOTH 36 /* Bluetooth sockets */ 263#define AF_IEEE80211 37 /* IEEE 802.11 protocol */ 264#define AF_NETLINK 38 /* Netlink protocol */ 265#define AF_INET_SDP 40 /* OFED Socket Direct Protocol ipv4 */ 266#define AF_INET6_SDP 42 /* OFED Socket Direct Protocol ipv6 */ 267#define AF_HYPERV 43 /* HyperV sockets */ 268#define AF_DIVERT 44 /* divert(4) */ 269#define AF_MAX 44 270/* 271 * When allocating a new AF_ constant, please only allocate 272 * even numbered constants for FreeBSD until 134 as odd numbered AF_ 273 * constants 39-133 are now reserved for vendors. 274 */ 275#define AF_VENDOR00 39 276#define AF_VENDOR01 41 277#define AF_VENDOR03 45 278#define AF_VENDOR04 47 279#define AF_VENDOR05 49 280#define AF_VENDOR06 51 281#define AF_VENDOR07 53 282#define AF_VENDOR08 55 283#define AF_VENDOR09 57 284#define AF_VENDOR10 59 285#define AF_VENDOR11 61 286#define AF_VENDOR12 63 287#define AF_VENDOR13 65 288#define AF_VENDOR14 67 289#define AF_VENDOR15 69 290#define AF_VENDOR16 71 291#define AF_VENDOR17 73 292#define AF_VENDOR18 75 293#define AF_VENDOR19 77 294#define AF_VENDOR20 79 295#define AF_VENDOR21 81 296#define AF_VENDOR22 83 297#define AF_VENDOR23 85 298#define AF_VENDOR24 87 299#define AF_VENDOR25 89 300#define AF_VENDOR26 91 301#define AF_VENDOR27 93 302#define AF_VENDOR28 95 303#define AF_VENDOR29 97 304#define AF_VENDOR30 99 305#define AF_VENDOR31 101 306#define AF_VENDOR32 103 307#define AF_VENDOR33 105 308#define AF_VENDOR34 107 309#define AF_VENDOR35 109 310#define AF_VENDOR36 111 311#define AF_VENDOR37 113 312#define AF_VENDOR38 115 313#define AF_VENDOR39 117 314#define AF_VENDOR40 119 315#define AF_VENDOR41 121 316#define AF_VENDOR42 123 317#define AF_VENDOR43 125 318#define AF_VENDOR44 127 319#define AF_VENDOR45 129 320#define AF_VENDOR46 131 321#define AF_VENDOR47 133 322#endif 323 324/* 325 * Structure used by kernel to store most 326 * addresses. 327 */ 328struct sockaddr { 329 unsigned char sa_len; /* total length */ 330 sa_family_t sa_family; /* address family */ 331 char sa_data[14]; /* actually longer; address value */ 332}; 333#if __BSD_VISIBLE 334#define SOCK_MAXADDRLEN 255 /* longest possible addresses */ 335 336/* 337 * Structure used by kernel to pass protocol 338 * information in raw sockets. 339 */ 340struct sockproto { 341 unsigned short sp_family; /* address family */ 342 unsigned short sp_protocol; /* protocol */ 343}; 344#endif 345 346#include <sys/_sockaddr_storage.h> 347 348#if __BSD_VISIBLE 349/* 350 * Protocol families, same as address families for now. 351 */ 352#define PF_UNSPEC AF_UNSPEC 353#define PF_LOCAL AF_LOCAL 354#define PF_UNIX PF_LOCAL /* backward compatibility */ 355#define PF_INET AF_INET 356#define PF_IMPLINK AF_IMPLINK 357#define PF_PUP AF_PUP 358#define PF_CHAOS AF_CHAOS 359#define PF_NETBIOS AF_NETBIOS 360#define PF_ISO AF_ISO 361#define PF_OSI AF_ISO 362#define PF_ECMA AF_ECMA 363#define PF_DATAKIT AF_DATAKIT 364#define PF_CCITT AF_CCITT 365#define PF_SNA AF_SNA 366#define PF_DECnet AF_DECnet 367#define PF_DLI AF_DLI 368#define PF_LAT AF_LAT 369#define PF_HYLINK AF_HYLINK 370#define PF_APPLETALK AF_APPLETALK 371#define PF_ROUTE AF_ROUTE 372#define PF_LINK AF_LINK 373#define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */ 374#define PF_COIP AF_COIP 375#define PF_CNT AF_CNT 376#define PF_SIP AF_SIP 377#define PF_IPX AF_IPX 378#define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */ 379#define PF_PIP pseudo_AF_PIP 380#define PF_ISDN AF_ISDN 381#define PF_KEY pseudo_AF_KEY 382#define PF_INET6 AF_INET6 383#define PF_NATM AF_NATM 384#define PF_ATM AF_ATM 385#define PF_NETGRAPH AF_NETGRAPH 386#define PF_SLOW AF_SLOW 387#define PF_SCLUSTER AF_SCLUSTER 388#define PF_ARP AF_ARP 389#define PF_BLUETOOTH AF_BLUETOOTH 390#define PF_IEEE80211 AF_IEEE80211 391#define PF_NETLINK AF_NETLINK 392#define PF_INET_SDP AF_INET_SDP 393#define PF_INET6_SDP AF_INET6_SDP 394#define PF_DIVERT AF_DIVERT 395 396#define PF_MAX AF_MAX 397 398/* 399 * Definitions for network related sysctl, CTL_NET. 400 * 401 * Second level is protocol family. 402 * Third level is protocol number. 403 * 404 * Further levels are defined by the individual families. 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_NHOP 6 /* dump routing nexthops */ 422#define NET_RT_NHGRP 7 /* dump routing nexthop groups */ 423#endif /* __BSD_VISIBLE */ 424 425/* 426 * Maximum queue length specifiable by listen. 427 */ 428#define SOMAXCONN 128 429 430/* 431 * Message header for recvmsg and sendmsg calls. 432 * Used value-result for recvmsg, value only for sendmsg. 433 */ 434struct msghdr { 435 void *msg_name; /* optional address */ 436 socklen_t msg_namelen; /* size of address */ 437 struct iovec *msg_iov; /* scatter/gather array */ 438 int msg_iovlen; /* # elements in msg_iov */ 439 void *msg_control; /* ancillary data, see below */ 440 socklen_t msg_controllen; /* ancillary data buffer len */ 441 int msg_flags; /* flags on received message */ 442}; 443 444#define MSG_OOB 0x00000001 /* process out-of-band data */ 445#define MSG_PEEK 0x00000002 /* peek at incoming message */ 446#define MSG_DONTROUTE 0x00000004 /* send without using routing tables */ 447#define MSG_EOR 0x00000008 /* data completes record */ 448#define MSG_TRUNC 0x00000010 /* data discarded before delivery */ 449#define MSG_CTRUNC 0x00000020 /* control data lost before delivery */ 450#define MSG_WAITALL 0x00000040 /* wait for full request or error */ 451#if __BSD_VISIBLE 452#define MSG_DONTWAIT 0x00000080 /* this message should be nonblocking */ 453#define MSG_EOF 0x00000100 /* data completes connection */ 454/* 0x00000200 unused */ 455/* 0x00000400 unused */ 456/* 0x00000800 unused */ 457/* 0x00001000 unused */ 458#define MSG_NOTIFICATION 0x00002000 /* SCTP notification */ 459#define MSG_NBIO 0x00004000 /* FIONBIO mode, used by fifofs */ 460#define MSG_COMPAT 0x00008000 /* used in sendit() */ 461#endif 462#ifdef _KERNEL 463#define MSG_SOCALLBCK 0x00010000 /* for use by socket callbacks - soreceive (TCP) */ 464#endif 465#if __POSIX_VISIBLE >= 200809 466#define MSG_NOSIGNAL 0x00020000 /* do not generate SIGPIPE on EOF */ 467#endif 468#if __BSD_VISIBLE 469#define MSG_CMSG_CLOEXEC 0x00040000 /* make received fds close-on-exec */ 470#define MSG_WAITFORONE 0x00080000 /* for recvmmsg() */ 471#endif 472#ifdef _KERNEL 473#define MSG_MORETOCOME 0x00100000 /* additional data pending */ 474#define MSG_TLSAPPDATA 0x00200000 /* do not soreceive() alert rec. (TLS) */ 475#endif 476 477/* 478 * Header for ancillary data objects in msg_control buffer. 479 * Used for additional information with/about a datagram 480 * not expressible by flags. The format is a sequence 481 * of message elements headed by cmsghdr structures. 482 */ 483struct cmsghdr { 484 socklen_t cmsg_len; /* data byte count, including hdr */ 485 int cmsg_level; /* originating protocol */ 486 int cmsg_type; /* protocol-specific type */ 487/* followed by u_char cmsg_data[]; */ 488}; 489 490#if __BSD_VISIBLE 491/* 492 * While we may have more groups than this, the cmsgcred struct must 493 * be able to fit in an mbuf and we have historically supported a 494 * maximum of 16 groups. 495*/ 496#define CMGROUP_MAX 16 497 498/* 499 * Credentials structure, used to verify the identity of a peer 500 * process that has sent us a message. This is allocated by the 501 * peer process but filled in by the kernel. This prevents the 502 * peer from lying about its identity. (Note that cmcred_groups[0] 503 * is the effective GID.) 504 */ 505struct cmsgcred { 506 pid_t cmcred_pid; /* PID of sending process */ 507 uid_t cmcred_uid; /* real UID of sending process */ 508 uid_t cmcred_euid; /* effective UID of sending process */ 509 gid_t cmcred_gid; /* real GID of sending process */ 510 short cmcred_ngroups; /* number or groups */ 511 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */ 512}; 513 514/* 515 * Socket credentials (LOCAL_CREDS). 516 */ 517struct sockcred { 518 uid_t sc_uid; /* real user id */ 519 uid_t sc_euid; /* effective user id */ 520 gid_t sc_gid; /* real group id */ 521 gid_t sc_egid; /* effective group id */ 522 int sc_ngroups; /* number of supplemental groups */ 523 gid_t sc_groups[1]; /* variable length */ 524}; 525 526/* 527 * Compute size of a sockcred structure with groups. 528 */ 529#define SOCKCREDSIZE(ngrps) \ 530 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1))) 531 532/* 533 * Socket credentials (LOCAL_CREDS_PERSISTENT). 534 */ 535struct sockcred2 { 536 int sc_version; /* version of this structure */ 537 pid_t sc_pid; /* PID of sending process */ 538 uid_t sc_uid; /* real user id */ 539 uid_t sc_euid; /* effective user id */ 540 gid_t sc_gid; /* real group id */ 541 gid_t sc_egid; /* effective group id */ 542 int sc_ngroups; /* number of supplemental groups */ 543 gid_t sc_groups[1]; /* variable length */ 544}; 545#define SOCKCRED2SIZE(ngrps) \ 546 (sizeof(struct sockcred2) + (sizeof(gid_t) * ((ngrps) - 1))) 547 548#endif /* __BSD_VISIBLE */ 549 550/* given pointer to struct cmsghdr, return pointer to data */ 551#define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \ 552 _ALIGN(sizeof(struct cmsghdr))) 553 554/* given pointer to struct cmsghdr, return pointer to next cmsghdr */ 555#define CMSG_NXTHDR(mhdr, cmsg) \ 556 ((char *)(cmsg) == (char *)0 ? CMSG_FIRSTHDR(mhdr) : \ 557 ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \ 558 _ALIGN(sizeof(struct cmsghdr)) > \ 559 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \ 560 (struct cmsghdr *)0 : \ 561 (struct cmsghdr *)(void *)((char *)(cmsg) + \ 562 _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len))) 563 564/* 565 * RFC 2292 requires to check msg_controllen, in case that the kernel returns 566 * an empty list for some reasons. 567 */ 568#define CMSG_FIRSTHDR(mhdr) \ 569 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ 570 (struct cmsghdr *)(mhdr)->msg_control : \ 571 (struct cmsghdr *)0) 572 573#if __BSD_VISIBLE 574/* RFC 2292 additions */ 575#define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l)) 576#define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l)) 577#endif 578 579#ifdef _KERNEL 580#define CMSG_ALIGN(n) _ALIGN(n) 581#endif 582 583/* "Socket"-level control message types: */ 584#define SCM_RIGHTS 0x01 /* access rights (array of int) */ 585#if __BSD_VISIBLE 586#define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */ 587#define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */ 588#define SCM_BINTIME 0x04 /* timestamp (struct bintime) */ 589#define SCM_REALTIME 0x05 /* timestamp (struct timespec) */ 590#define SCM_MONOTONIC 0x06 /* timestamp (struct timespec) */ 591#define SCM_TIME_INFO 0x07 /* timestamp info */ 592#define SCM_CREDS2 0x08 /* process creds (struct sockcred2) */ 593 594struct sock_timestamp_info { 595 __uint32_t st_info_flags; 596 __uint32_t st_info_pad0; 597 __uint64_t st_info_rsv[7]; 598}; 599 600#define ST_INFO_HW 0x0001 /* SCM_TIMESTAMP was hw */ 601#define ST_INFO_HW_HPREC 0x0002 /* SCM_TIMESTAMP was hw-assisted 602 on entrance */ 603#endif 604 605#if __BSD_VISIBLE 606/* 607 * 4.3 compat sockaddr, move to compat file later 608 */ 609struct osockaddr { 610 unsigned short sa_family; /* address family */ 611 char sa_data[14]; /* up to 14 bytes of direct address */ 612}; 613 614/* 615 * 4.3-compat message header (move to compat file later). 616 */ 617struct omsghdr { 618 char *msg_name; /* optional address */ 619 int msg_namelen; /* size of address */ 620 struct iovec *msg_iov; /* scatter/gather array */ 621 int msg_iovlen; /* # elements in msg_iov */ 622 char *msg_accrights; /* access rights sent/received */ 623 int msg_accrightslen; 624}; 625#endif 626 627/* 628 * howto arguments for shutdown(2), specified by Posix.1g. 629 */ 630enum shutdown_how { 631 SHUT_RD = 0, /* shut down the reading side */ 632#define SHUT_RD SHUT_RD 633 SHUT_WR, /* shut down the writing side */ 634#define SHUT_WR SHUT_WR 635 SHUT_RDWR /* shut down both sides */ 636#define SHUT_RDWR SHUT_RDWR 637}; 638 639#if __BSD_VISIBLE 640/* 641 * sendfile(2) header/trailer struct 642 */ 643struct sf_hdtr { 644 struct iovec *headers; /* pointer to an array of header struct iovec's */ 645 int hdr_cnt; /* number of header iovec's */ 646 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */ 647 int trl_cnt; /* number of trailer iovec's */ 648}; 649 650/* 651 * Sendfile-specific flag(s) 652 */ 653#define SF_NODISKIO 0x00000001 654#define SF_MNOWAIT 0x00000002 /* obsolete */ 655#define SF_SYNC 0x00000004 656#define SF_USER_READAHEAD 0x00000008 657#define SF_NOCACHE 0x00000010 658#define SF_FLAGS(rh, flags) (((rh) << 16) | (flags)) 659 660#ifdef _KERNEL 661#define SF_READAHEAD(flags) ((flags) >> 16) 662#endif /* _KERNEL */ 663 664/* 665 * Sendmmsg/recvmmsg specific structure(s) 666 */ 667struct mmsghdr { 668 struct msghdr msg_hdr; /* message header */ 669 ssize_t msg_len; /* message length */ 670}; 671#endif /* __BSD_VISIBLE */ 672 673#ifndef _KERNEL 674 675#include <sys/cdefs.h> 676 677__BEGIN_DECLS 678int accept(int, struct sockaddr * __restrict, socklen_t * __restrict); 679int bind(int, const struct sockaddr *, socklen_t); 680int connect(int, const struct sockaddr *, socklen_t); 681#if __BSD_VISIBLE 682int accept4(int, struct sockaddr * __restrict, socklen_t * __restrict, int); 683int bindat(int, int, const struct sockaddr *, socklen_t); 684int connectat(int, int, const struct sockaddr *, socklen_t); 685#endif 686int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict); 687int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict); 688int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict); 689int listen(int, int); 690ssize_t recv(int, void *, size_t, int); 691ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict); 692ssize_t recvmsg(int, struct msghdr *, int); 693#if __BSD_VISIBLE 694struct timespec; 695ssize_t recvmmsg(int, struct mmsghdr * __restrict, size_t, int, 696 const struct timespec * __restrict); 697#endif 698ssize_t send(int, const void *, size_t, int); 699ssize_t sendto(int, const void *, 700 size_t, int, const struct sockaddr *, socklen_t); 701ssize_t sendmsg(int, const struct msghdr *, int); 702#if __BSD_VISIBLE 703int sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int); 704ssize_t sendmmsg(int, struct mmsghdr * __restrict, size_t, int); 705int setfib(int); 706#endif 707int setsockopt(int, int, int, const void *, socklen_t); 708int shutdown(int, int); 709int sockatmark(int); 710int socket(int, int, int); 711int socketpair(int, int, int, int *); 712__END_DECLS 713 714#endif /* !_KERNEL */ 715 716#ifdef _KERNEL 717struct socket; 718 719int so_options_get(const struct socket *); 720void so_options_set(struct socket *, int); 721 722int so_error_get(const struct socket *); 723void so_error_set(struct socket *, int); 724#endif /* _KERNEL */ 725#endif /* !_SYS_SOCKET_H_ */ 726