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 * $FreeBSD$ 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 50 typedef __gid_t gid_t; 51 #define _GID_T_DECLARED 52 #endif 53 54 #ifndef _OFF_T_DECLARED 55 typedef __off_t off_t; 56 #define _OFF_T_DECLARED 57 #endif 58 59 #ifndef _PID_T_DECLARED 60 typedef __pid_t pid_t; 61 #define _PID_T_DECLARED 62 #endif 63 #endif 64 65 #ifndef _SA_FAMILY_T_DECLARED 66 typedef __sa_family_t sa_family_t; 67 #define _SA_FAMILY_T_DECLARED 68 #endif 69 70 #ifndef _SOCKLEN_T_DECLARED 71 typedef __socklen_t socklen_t; 72 #define _SOCKLEN_T_DECLARED 73 #endif 74 75 #ifndef _SSIZE_T_DECLARED 76 typedef __ssize_t ssize_t; 77 #define _SSIZE_T_DECLARED 78 #endif 79 80 #if __BSD_VISIBLE 81 #ifndef _UID_T_DECLARED 82 typedef __uid_t uid_t; 83 #define _UID_T_DECLARED 84 #endif 85 #endif 86 87 #ifndef _UINT32_T_DECLARED 88 typedef __uint32_t uint32_t; 89 #define _UINT32_T_DECLARED 90 #endif 91 92 #ifndef _UINTPTR_T_DECLARED 93 typedef __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 #endif 162 163 /* 164 * Space reserved for new socket options added by third-party vendors. 165 * This range applies to all socket option levels. New socket options 166 * in FreeBSD should always use an option value less than SO_VENDOR. 167 */ 168 #if __BSD_VISIBLE 169 #define SO_VENDOR 0x80000000 170 #endif 171 172 /* 173 * Structure used for manipulating linger option. 174 */ 175 struct linger { 176 int l_onoff; /* option on/off */ 177 int l_linger; /* linger time */ 178 }; 179 180 #if __BSD_VISIBLE 181 struct accept_filter_arg { 182 char af_name[16]; 183 char af_arg[256-16]; 184 }; 185 #endif 186 187 /* 188 * Level number for (get/set)sockopt() to apply to socket itself. 189 */ 190 #define SOL_SOCKET 0xffff /* options for socket level */ 191 192 /* 193 * Address families. 194 */ 195 #define AF_UNSPEC 0 /* unspecified */ 196 #if __BSD_VISIBLE 197 #define AF_LOCAL AF_UNIX /* local to host (pipes, portals) */ 198 #endif 199 #define AF_UNIX 1 /* standardized name for AF_LOCAL */ 200 #define AF_INET 2 /* internetwork: UDP, TCP, etc. */ 201 #if __BSD_VISIBLE 202 #define AF_IMPLINK 3 /* arpanet imp addresses */ 203 #define AF_PUP 4 /* pup protocols: e.g. BSP */ 204 #define AF_CHAOS 5 /* mit CHAOS protocols */ 205 #define AF_NETBIOS 6 /* SMB protocols */ 206 #define AF_ISO 7 /* ISO protocols */ 207 #define AF_OSI AF_ISO 208 #define AF_ECMA 8 /* European computer manufacturers */ 209 #define AF_DATAKIT 9 /* datakit protocols */ 210 #define AF_CCITT 10 /* CCITT protocols, X.25 etc */ 211 #define AF_SNA 11 /* IBM SNA */ 212 #define AF_DECnet 12 /* DECnet */ 213 #define AF_DLI 13 /* DEC Direct data link interface */ 214 #define AF_LAT 14 /* LAT */ 215 #define AF_HYLINK 15 /* NSC Hyperchannel */ 216 #define AF_APPLETALK 16 /* Apple Talk */ 217 #define AF_ROUTE 17 /* Internal Routing Protocol */ 218 #define AF_LINK 18 /* Link layer interface */ 219 #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */ 220 #define AF_COIP 20 /* connection-oriented IP, aka ST II */ 221 #define AF_CNT 21 /* Computer Network Technology */ 222 #define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */ 223 #define AF_IPX 23 /* Novell Internet Protocol */ 224 #define AF_SIP 24 /* Simple Internet Protocol */ 225 #define pseudo_AF_PIP 25 /* Help Identify PIP packets */ 226 #define AF_ISDN 26 /* Integrated Services Digital Network*/ 227 #define AF_E164 AF_ISDN /* CCITT E.164 recommendation */ 228 #define pseudo_AF_KEY 27 /* Internal key-management function */ 229 #endif 230 #define AF_INET6 28 /* IPv6 */ 231 #if __BSD_VISIBLE 232 #define AF_NATM 29 /* native ATM access */ 233 #define AF_ATM 30 /* ATM */ 234 #define pseudo_AF_HDRCMPLT 31 /* Used by BPF to not rewrite headers 235 * in interface output routine 236 */ 237 #define AF_NETGRAPH 32 /* Netgraph sockets */ 238 #define AF_SLOW 33 /* 802.3ad slow protocol */ 239 #define AF_SCLUSTER 34 /* Sitara cluster protocol */ 240 #define AF_ARP 35 241 #define AF_BLUETOOTH 36 /* Bluetooth sockets */ 242 #define AF_IEEE80211 37 /* IEEE 802.11 protocol */ 243 #define AF_INET_SDP 40 /* OFED Socket Direct Protocol ipv4 */ 244 #define AF_INET6_SDP 42 /* OFED Socket Direct Protocol ipv6 */ 245 #define AF_MAX 42 246 /* 247 * When allocating a new AF_ constant, please only allocate 248 * even numbered constants for FreeBSD until 134 as odd numbered AF_ 249 * constants 39-133 are now reserved for vendors. 250 */ 251 #define AF_VENDOR00 39 252 #define AF_VENDOR01 41 253 #define AF_VENDOR02 43 254 #define AF_VENDOR03 45 255 #define AF_VENDOR04 47 256 #define AF_VENDOR05 49 257 #define AF_VENDOR06 51 258 #define AF_VENDOR07 53 259 #define AF_VENDOR08 55 260 #define AF_VENDOR09 57 261 #define AF_VENDOR10 59 262 #define AF_VENDOR11 61 263 #define AF_VENDOR12 63 264 #define AF_VENDOR13 65 265 #define AF_VENDOR14 67 266 #define AF_VENDOR15 69 267 #define AF_VENDOR16 71 268 #define AF_VENDOR17 73 269 #define AF_VENDOR18 75 270 #define AF_VENDOR19 77 271 #define AF_VENDOR20 79 272 #define AF_VENDOR21 81 273 #define AF_VENDOR22 83 274 #define AF_VENDOR23 85 275 #define AF_VENDOR24 87 276 #define AF_VENDOR25 89 277 #define AF_VENDOR26 91 278 #define AF_VENDOR27 93 279 #define AF_VENDOR28 95 280 #define AF_VENDOR29 97 281 #define AF_VENDOR30 99 282 #define AF_VENDOR31 101 283 #define AF_VENDOR32 103 284 #define AF_VENDOR33 105 285 #define AF_VENDOR34 107 286 #define AF_VENDOR35 109 287 #define AF_VENDOR36 111 288 #define AF_VENDOR37 113 289 #define AF_VENDOR38 115 290 #define AF_VENDOR39 117 291 #define AF_VENDOR40 119 292 #define AF_VENDOR41 121 293 #define AF_VENDOR42 123 294 #define AF_VENDOR43 125 295 #define AF_VENDOR44 127 296 #define AF_VENDOR45 129 297 #define AF_VENDOR46 131 298 #define AF_VENDOR47 133 299 #endif 300 301 /* 302 * Structure used by kernel to store most 303 * addresses. 304 */ 305 struct sockaddr { 306 unsigned char sa_len; /* total length */ 307 sa_family_t sa_family; /* address family */ 308 char sa_data[14]; /* actually longer; address value */ 309 }; 310 #if __BSD_VISIBLE 311 #define SOCK_MAXADDRLEN 255 /* longest possible addresses */ 312 313 /* 314 * Structure used by kernel to pass protocol 315 * information in raw sockets. 316 */ 317 struct sockproto { 318 unsigned short sp_family; /* address family */ 319 unsigned short sp_protocol; /* protocol */ 320 }; 321 #endif 322 323 #include <sys/_sockaddr_storage.h> 324 325 #if __BSD_VISIBLE 326 /* 327 * Protocol families, same as address families for now. 328 */ 329 #define PF_UNSPEC AF_UNSPEC 330 #define PF_LOCAL AF_LOCAL 331 #define PF_UNIX PF_LOCAL /* backward compatibility */ 332 #define PF_INET AF_INET 333 #define PF_IMPLINK AF_IMPLINK 334 #define PF_PUP AF_PUP 335 #define PF_CHAOS AF_CHAOS 336 #define PF_NETBIOS AF_NETBIOS 337 #define PF_ISO AF_ISO 338 #define PF_OSI AF_ISO 339 #define PF_ECMA AF_ECMA 340 #define PF_DATAKIT AF_DATAKIT 341 #define PF_CCITT AF_CCITT 342 #define PF_SNA AF_SNA 343 #define PF_DECnet AF_DECnet 344 #define PF_DLI AF_DLI 345 #define PF_LAT AF_LAT 346 #define PF_HYLINK AF_HYLINK 347 #define PF_APPLETALK AF_APPLETALK 348 #define PF_ROUTE AF_ROUTE 349 #define PF_LINK AF_LINK 350 #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */ 351 #define PF_COIP AF_COIP 352 #define PF_CNT AF_CNT 353 #define PF_SIP AF_SIP 354 #define PF_IPX AF_IPX 355 #define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */ 356 #define PF_PIP pseudo_AF_PIP 357 #define PF_ISDN AF_ISDN 358 #define PF_KEY pseudo_AF_KEY 359 #define PF_INET6 AF_INET6 360 #define PF_NATM AF_NATM 361 #define PF_ATM AF_ATM 362 #define PF_NETGRAPH AF_NETGRAPH 363 #define PF_SLOW AF_SLOW 364 #define PF_SCLUSTER AF_SCLUSTER 365 #define PF_ARP AF_ARP 366 #define PF_BLUETOOTH AF_BLUETOOTH 367 #define PF_IEEE80211 AF_IEEE80211 368 #define PF_INET_SDP AF_INET_SDP 369 #define PF_INET6_SDP AF_INET6_SDP 370 371 #define PF_MAX AF_MAX 372 373 /* 374 * Definitions for network related sysctl, CTL_NET. 375 * 376 * Second level is protocol family. 377 * Third level is protocol number. 378 * 379 * Further levels are defined by the individual families. 380 */ 381 382 /* 383 * PF_ROUTE - Routing table 384 * 385 * Three additional levels are defined: 386 * Fourth: address family, 0 is wildcard 387 * Fifth: type of info, defined below 388 * Sixth: flag(s) to mask with for NET_RT_FLAGS 389 */ 390 #define NET_RT_DUMP 1 /* dump; may limit to a.f. */ 391 #define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */ 392 #define NET_RT_IFLIST 3 /* survey interface list */ 393 #define NET_RT_IFMALIST 4 /* return multicast address list */ 394 #define NET_RT_IFLISTL 5 /* Survey interface list, using 'l'en 395 * versions of msghdr structs. */ 396 #endif /* __BSD_VISIBLE */ 397 398 /* 399 * Maximum queue length specifiable by listen. 400 */ 401 #define SOMAXCONN 128 402 403 /* 404 * Message header for recvmsg and sendmsg calls. 405 * Used value-result for recvmsg, value only for sendmsg. 406 */ 407 struct msghdr { 408 void *msg_name; /* optional address */ 409 socklen_t msg_namelen; /* size of address */ 410 struct iovec *msg_iov; /* scatter/gather array */ 411 int msg_iovlen; /* # elements in msg_iov */ 412 void *msg_control; /* ancillary data, see below */ 413 socklen_t msg_controllen; /* ancillary data buffer len */ 414 int msg_flags; /* flags on received message */ 415 }; 416 417 #define MSG_OOB 0x1 /* process out-of-band data */ 418 #define MSG_PEEK 0x2 /* peek at incoming message */ 419 #define MSG_DONTROUTE 0x4 /* send without using routing tables */ 420 #define MSG_EOR 0x8 /* data completes record */ 421 #define MSG_TRUNC 0x10 /* data discarded before delivery */ 422 #define MSG_CTRUNC 0x20 /* control data lost before delivery */ 423 #define MSG_WAITALL 0x40 /* wait for full request or error */ 424 #if __POSIX_VISIBLE >= 200809 425 #define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */ 426 #endif 427 #if __BSD_VISIBLE 428 #define MSG_DONTWAIT 0x80 /* this message should be nonblocking */ 429 #define MSG_EOF 0x100 /* data completes connection */ 430 #define MSG_NOTIFICATION 0x2000 /* SCTP notification */ 431 #define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */ 432 #define MSG_COMPAT 0x8000 /* used in sendit() */ 433 #define MSG_CMSG_CLOEXEC 0x40000 /* make received fds close-on-exec */ 434 #define MSG_WAITFORONE 0x80000 /* for recvmmsg() */ 435 #endif 436 #ifdef _KERNEL 437 #define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */ 438 #endif 439 440 /* 441 * Header for ancillary data objects in msg_control buffer. 442 * Used for additional information with/about a datagram 443 * not expressible by flags. The format is a sequence 444 * of message elements headed by cmsghdr structures. 445 */ 446 struct cmsghdr { 447 socklen_t cmsg_len; /* data byte count, including hdr */ 448 int cmsg_level; /* originating protocol */ 449 int cmsg_type; /* protocol-specific type */ 450 /* followed by u_char cmsg_data[]; */ 451 }; 452 453 #if __BSD_VISIBLE 454 /* 455 * While we may have more groups than this, the cmsgcred struct must 456 * be able to fit in an mbuf and we have historically supported a 457 * maximum of 16 groups. 458 */ 459 #define CMGROUP_MAX 16 460 461 /* 462 * Credentials structure, used to verify the identity of a peer 463 * process that has sent us a message. This is allocated by the 464 * peer process but filled in by the kernel. This prevents the 465 * peer from lying about its identity. (Note that cmcred_groups[0] 466 * is the effective GID.) 467 */ 468 struct cmsgcred { 469 pid_t cmcred_pid; /* PID of sending process */ 470 uid_t cmcred_uid; /* real UID of sending process */ 471 uid_t cmcred_euid; /* effective UID of sending process */ 472 gid_t cmcred_gid; /* real GID of sending process */ 473 short cmcred_ngroups; /* number or groups */ 474 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */ 475 }; 476 477 /* 478 * Socket credentials. 479 */ 480 struct sockcred { 481 uid_t sc_uid; /* real user id */ 482 uid_t sc_euid; /* effective user id */ 483 gid_t sc_gid; /* real group id */ 484 gid_t sc_egid; /* effective group id */ 485 int sc_ngroups; /* number of supplemental groups */ 486 gid_t sc_groups[1]; /* variable length */ 487 }; 488 489 /* 490 * Compute size of a sockcred structure with groups. 491 */ 492 #define SOCKCREDSIZE(ngrps) \ 493 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1))) 494 495 #endif /* __BSD_VISIBLE */ 496 497 /* given pointer to struct cmsghdr, return pointer to data */ 498 #define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \ 499 _ALIGN(sizeof(struct cmsghdr))) 500 501 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */ 502 #define CMSG_NXTHDR(mhdr, cmsg) \ 503 ((char *)(cmsg) == NULL ? CMSG_FIRSTHDR(mhdr) : \ 504 ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \ 505 _ALIGN(sizeof(struct cmsghdr)) > \ 506 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \ 507 (struct cmsghdr *)0 : \ 508 (struct cmsghdr *)(void *)((char *)(cmsg) + \ 509 _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len))) 510 511 /* 512 * RFC 2292 requires to check msg_controllen, in case that the kernel returns 513 * an empty list for some reasons. 514 */ 515 #define CMSG_FIRSTHDR(mhdr) \ 516 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ 517 (struct cmsghdr *)(mhdr)->msg_control : \ 518 (struct cmsghdr *)NULL) 519 520 #if __BSD_VISIBLE 521 /* RFC 2292 additions */ 522 #define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l)) 523 #define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l)) 524 #endif 525 526 #ifdef _KERNEL 527 #define CMSG_ALIGN(n) _ALIGN(n) 528 #endif 529 530 /* "Socket"-level control message types: */ 531 #define SCM_RIGHTS 0x01 /* access rights (array of int) */ 532 #if __BSD_VISIBLE 533 #define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */ 534 #define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */ 535 #define SCM_BINTIME 0x04 /* timestamp (struct bintime) */ 536 #endif 537 538 #if __BSD_VISIBLE 539 /* 540 * 4.3 compat sockaddr, move to compat file later 541 */ 542 struct osockaddr { 543 unsigned short sa_family; /* address family */ 544 char sa_data[14]; /* up to 14 bytes of direct address */ 545 }; 546 547 /* 548 * 4.3-compat message header (move to compat file later). 549 */ 550 struct omsghdr { 551 char *msg_name; /* optional address */ 552 int msg_namelen; /* size of address */ 553 struct iovec *msg_iov; /* scatter/gather array */ 554 int msg_iovlen; /* # elements in msg_iov */ 555 char *msg_accrights; /* access rights sent/received */ 556 int msg_accrightslen; 557 }; 558 #endif 559 560 /* 561 * howto arguments for shutdown(2), specified by Posix.1g. 562 */ 563 #define SHUT_RD 0 /* shut down the reading side */ 564 #define SHUT_WR 1 /* shut down the writing side */ 565 #define SHUT_RDWR 2 /* shut down both sides */ 566 567 #if __BSD_VISIBLE 568 /* for SCTP */ 569 /* we cheat and use the SHUT_XX defines for these */ 570 #define PRU_FLUSH_RD SHUT_RD 571 #define PRU_FLUSH_WR SHUT_WR 572 #define PRU_FLUSH_RDWR SHUT_RDWR 573 #endif 574 575 576 #if __BSD_VISIBLE 577 /* 578 * sendfile(2) header/trailer struct 579 */ 580 struct sf_hdtr { 581 struct iovec *headers; /* pointer to an array of header struct iovec's */ 582 int hdr_cnt; /* number of header iovec's */ 583 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */ 584 int trl_cnt; /* number of trailer iovec's */ 585 }; 586 587 /* 588 * Sendfile-specific flag(s) 589 */ 590 #define SF_NODISKIO 0x00000001 591 #define SF_MNOWAIT 0x00000002 /* obsolete */ 592 #define SF_SYNC 0x00000004 593 #define SF_NOCACHE 0x00000010 594 #define SF_FLAGS(rh, flags) (((rh) << 16) | (flags)) 595 596 #ifdef _KERNEL 597 #define SFK_COMPAT 0x00000001 598 #define SF_READAHEAD(flags) ((flags) >> 16) 599 #endif /* _KERNEL */ 600 601 /* 602 * Sendmmsg/recvmmsg specific structure(s) 603 */ 604 struct mmsghdr { 605 struct msghdr msg_hdr; /* message header */ 606 ssize_t msg_len; /* message length */ 607 }; 608 #endif /* __BSD_VISIBLE */ 609 610 #ifndef _KERNEL 611 612 #include <sys/cdefs.h> 613 614 __BEGIN_DECLS 615 int accept(int, struct sockaddr * __restrict, socklen_t * __restrict); 616 int bind(int, const struct sockaddr *, socklen_t); 617 int connect(int, const struct sockaddr *, socklen_t); 618 #if __BSD_VISIBLE 619 int accept4(int, struct sockaddr * __restrict, socklen_t * __restrict, int); 620 int bindat(int, int, const struct sockaddr *, socklen_t); 621 int connectat(int, int, const struct sockaddr *, socklen_t); 622 #endif 623 int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict); 624 int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict); 625 int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict); 626 int listen(int, int); 627 ssize_t recv(int, void *, size_t, int); 628 ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict); 629 ssize_t recvmsg(int, struct msghdr *, int); 630 #if __BSD_VISIBLE 631 struct timespec; 632 ssize_t recvmmsg(int, struct mmsghdr * __restrict, size_t, int, 633 const struct timespec * __restrict); 634 #endif 635 ssize_t send(int, const void *, size_t, int); 636 ssize_t sendto(int, const void *, 637 size_t, int, const struct sockaddr *, socklen_t); 638 ssize_t sendmsg(int, const struct msghdr *, int); 639 #if __BSD_VISIBLE 640 int sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int); 641 ssize_t sendmmsg(int, struct mmsghdr * __restrict, size_t, int); 642 int setfib(int); 643 #endif 644 int setsockopt(int, int, int, const void *, socklen_t); 645 int shutdown(int, int); 646 int sockatmark(int); 647 int socket(int, int, int); 648 int socketpair(int, int, int, int *); 649 __END_DECLS 650 651 #endif /* !_KERNEL */ 652 653 #ifdef _KERNEL 654 struct socket; 655 656 struct tcpcb *so_sototcpcb(struct socket *so); 657 struct inpcb *so_sotoinpcb(struct socket *so); 658 struct sockbuf *so_sockbuf_snd(struct socket *); 659 struct sockbuf *so_sockbuf_rcv(struct socket *); 660 661 int so_state_get(const struct socket *); 662 void so_state_set(struct socket *, int); 663 664 int so_options_get(const struct socket *); 665 void so_options_set(struct socket *, int); 666 667 int so_error_get(const struct socket *); 668 void so_error_set(struct socket *, int); 669 670 int so_linger_get(const struct socket *); 671 void so_linger_set(struct socket *, int); 672 673 struct protosw *so_protosw_get(const struct socket *); 674 void so_protosw_set(struct socket *, struct protosw *); 675 676 void so_sorwakeup_locked(struct socket *so); 677 void so_sowwakeup_locked(struct socket *so); 678 679 void so_sorwakeup(struct socket *so); 680 void so_sowwakeup(struct socket *so); 681 682 void so_lock(struct socket *so); 683 void so_unlock(struct socket *so); 684 685 void so_listeners_apply_all(struct socket *so, void (*func)(struct socket *, void *), void *arg); 686 687 #endif 688 689 690 #endif /* !_SYS_SOCKET_H_ */ 691