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_SYSTEM 43 246 #define AF_MAX 43 247 /* 248 * When allocating a new AF_ constant, please only allocate 249 * even numbered constants for FreeBSD until 134 as odd numbered AF_ 250 * constants 39-133 are now reserved for vendors. 251 */ 252 #define AF_VENDOR00 39 253 #define AF_VENDOR01 41 254 #define AF_VENDOR02 43 255 #define AF_VENDOR03 45 256 #define AF_VENDOR04 47 257 #define AF_VENDOR05 49 258 #define AF_VENDOR06 51 259 #define AF_VENDOR07 53 260 #define AF_VENDOR08 55 261 #define AF_VENDOR09 57 262 #define AF_VENDOR10 59 263 #define AF_VENDOR11 61 264 #define AF_VENDOR12 63 265 #define AF_VENDOR13 65 266 #define AF_VENDOR14 67 267 #define AF_VENDOR15 69 268 #define AF_VENDOR16 71 269 #define AF_VENDOR17 73 270 #define AF_VENDOR18 75 271 #define AF_VENDOR19 77 272 #define AF_VENDOR20 79 273 #define AF_VENDOR21 81 274 #define AF_VENDOR22 83 275 #define AF_VENDOR23 85 276 #define AF_VENDOR24 87 277 #define AF_VENDOR25 89 278 #define AF_VENDOR26 91 279 #define AF_VENDOR27 93 280 #define AF_VENDOR28 95 281 #define AF_VENDOR29 97 282 #define AF_VENDOR30 99 283 #define AF_VENDOR31 101 284 #define AF_VENDOR32 103 285 #define AF_VENDOR33 105 286 #define AF_VENDOR34 107 287 #define AF_VENDOR35 109 288 #define AF_VENDOR36 111 289 #define AF_VENDOR37 113 290 #define AF_VENDOR38 115 291 #define AF_VENDOR39 117 292 #define AF_VENDOR40 119 293 #define AF_VENDOR41 121 294 #define AF_VENDOR42 123 295 #define AF_VENDOR43 125 296 #define AF_VENDOR44 127 297 #define AF_VENDOR45 129 298 #define AF_VENDOR46 131 299 #define AF_VENDOR47 133 300 #endif 301 302 /* 303 * Structure used by kernel to store most 304 * addresses. 305 */ 306 struct sockaddr { 307 unsigned char sa_len; /* total length */ 308 sa_family_t sa_family; /* address family */ 309 char sa_data[14]; /* actually longer; address value */ 310 }; 311 #if __BSD_VISIBLE 312 #define SOCK_MAXADDRLEN 255 /* longest possible addresses */ 313 314 /* 315 * Structure used by kernel to pass protocol 316 * information in raw sockets. 317 */ 318 struct sockproto { 319 unsigned short sp_family; /* address family */ 320 unsigned short sp_protocol; /* protocol */ 321 }; 322 #endif 323 324 #include <sys/_sockaddr_storage.h> 325 326 #if __BSD_VISIBLE 327 /* 328 * Protocol families, same as address families for now. 329 */ 330 #define PF_UNSPEC AF_UNSPEC 331 #define PF_LOCAL AF_LOCAL 332 #define PF_UNIX PF_LOCAL /* backward compatibility */ 333 #define PF_INET AF_INET 334 #define PF_IMPLINK AF_IMPLINK 335 #define PF_PUP AF_PUP 336 #define PF_CHAOS AF_CHAOS 337 #define PF_NETBIOS AF_NETBIOS 338 #define PF_ISO AF_ISO 339 #define PF_OSI AF_ISO 340 #define PF_ECMA AF_ECMA 341 #define PF_DATAKIT AF_DATAKIT 342 #define PF_CCITT AF_CCITT 343 #define PF_SNA AF_SNA 344 #define PF_DECnet AF_DECnet 345 #define PF_DLI AF_DLI 346 #define PF_LAT AF_LAT 347 #define PF_HYLINK AF_HYLINK 348 #define PF_APPLETALK AF_APPLETALK 349 #define PF_ROUTE AF_ROUTE 350 #define PF_LINK AF_LINK 351 #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */ 352 #define PF_COIP AF_COIP 353 #define PF_CNT AF_CNT 354 #define PF_SIP AF_SIP 355 #define PF_IPX AF_IPX 356 #define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */ 357 #define PF_PIP pseudo_AF_PIP 358 #define PF_ISDN AF_ISDN 359 #define PF_KEY pseudo_AF_KEY 360 #define PF_INET6 AF_INET6 361 #define PF_NATM AF_NATM 362 #define PF_ATM AF_ATM 363 #define PF_NETGRAPH AF_NETGRAPH 364 #define PF_SLOW AF_SLOW 365 #define PF_SCLUSTER AF_SCLUSTER 366 #define PF_ARP AF_ARP 367 #define PF_BLUETOOTH AF_BLUETOOTH 368 #define PF_IEEE80211 AF_IEEE80211 369 #define PF_INET_SDP AF_INET_SDP 370 #define PF_INET6_SDP AF_INET6_SDP 371 #define PF_SYSTEM AF_SYSTEM 372 373 #define PF_MAX AF_MAX 374 375 /* 376 * Definitions for network related sysctl, CTL_NET. 377 * 378 * Second level is protocol family. 379 * Third level is protocol number. 380 * 381 * Further levels are defined by the individual families. 382 */ 383 384 /* 385 * PF_ROUTE - Routing table 386 * 387 * Three additional levels are defined: 388 * Fourth: address family, 0 is wildcard 389 * Fifth: type of info, defined below 390 * Sixth: flag(s) to mask with for NET_RT_FLAGS 391 */ 392 #define NET_RT_DUMP 1 /* dump; may limit to a.f. */ 393 #define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */ 394 #define NET_RT_IFLIST 3 /* survey interface list */ 395 #define NET_RT_IFMALIST 4 /* return multicast address list */ 396 #define NET_RT_IFLISTL 5 /* Survey interface list, using 'l'en 397 * versions of msghdr structs. */ 398 #endif /* __BSD_VISIBLE */ 399 400 /* 401 * Maximum queue length specifiable by listen. 402 */ 403 #define SOMAXCONN 128 404 405 /* 406 * Message header for recvmsg and sendmsg calls. 407 * Used value-result for recvmsg, value only for sendmsg. 408 */ 409 struct msghdr { 410 void *msg_name; /* optional address */ 411 socklen_t msg_namelen; /* size of address */ 412 struct iovec *msg_iov; /* scatter/gather array */ 413 int msg_iovlen; /* # elements in msg_iov */ 414 void *msg_control; /* ancillary data, see below */ 415 socklen_t msg_controllen; /* ancillary data buffer len */ 416 int msg_flags; /* flags on received message */ 417 }; 418 419 #define MSG_OOB 0x1 /* process out-of-band data */ 420 #define MSG_PEEK 0x2 /* peek at incoming message */ 421 #define MSG_DONTROUTE 0x4 /* send without using routing tables */ 422 #define MSG_EOR 0x8 /* data completes record */ 423 #define MSG_TRUNC 0x10 /* data discarded before delivery */ 424 #define MSG_CTRUNC 0x20 /* control data lost before delivery */ 425 #define MSG_WAITALL 0x40 /* wait for full request or error */ 426 #if __POSIX_VISIBLE >= 200809 427 #define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */ 428 #endif 429 #if __BSD_VISIBLE 430 #define MSG_DONTWAIT 0x80 /* this message should be nonblocking */ 431 #define MSG_EOF 0x100 /* data completes connection */ 432 #define MSG_NOTIFICATION 0x2000 /* SCTP notification */ 433 #define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */ 434 #define MSG_COMPAT 0x8000 /* used in sendit() */ 435 #define MSG_CMSG_CLOEXEC 0x40000 /* make received fds close-on-exec */ 436 #endif 437 #ifdef _KERNEL 438 #define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */ 439 #endif 440 441 /* 442 * Header for ancillary data objects in msg_control buffer. 443 * Used for additional information with/about a datagram 444 * not expressible by flags. The format is a sequence 445 * of message elements headed by cmsghdr structures. 446 */ 447 struct cmsghdr { 448 socklen_t cmsg_len; /* data byte count, including hdr */ 449 int cmsg_level; /* originating protocol */ 450 int cmsg_type; /* protocol-specific type */ 451 /* followed by u_char cmsg_data[]; */ 452 }; 453 454 #if __BSD_VISIBLE 455 /* 456 * While we may have more groups than this, the cmsgcred struct must 457 * be able to fit in an mbuf and we have historically supported a 458 * maximum of 16 groups. 459 */ 460 #define CMGROUP_MAX 16 461 462 /* 463 * Credentials structure, used to verify the identity of a peer 464 * process that has sent us a message. This is allocated by the 465 * peer process but filled in by the kernel. This prevents the 466 * peer from lying about its identity. (Note that cmcred_groups[0] 467 * is the effective GID.) 468 */ 469 struct cmsgcred { 470 pid_t cmcred_pid; /* PID of sending process */ 471 uid_t cmcred_uid; /* real UID of sending process */ 472 uid_t cmcred_euid; /* effective UID of sending process */ 473 gid_t cmcred_gid; /* real GID of sending process */ 474 short cmcred_ngroups; /* number or groups */ 475 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */ 476 }; 477 478 /* 479 * Socket credentials. 480 */ 481 struct sockcred { 482 uid_t sc_uid; /* real user id */ 483 uid_t sc_euid; /* effective user id */ 484 gid_t sc_gid; /* real group id */ 485 gid_t sc_egid; /* effective group id */ 486 int sc_ngroups; /* number of supplemental groups */ 487 gid_t sc_groups[1]; /* variable length */ 488 }; 489 490 /* 491 * Compute size of a sockcred structure with groups. 492 */ 493 #define SOCKCREDSIZE(ngrps) \ 494 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1))) 495 496 #endif /* __BSD_VISIBLE */ 497 498 /* given pointer to struct cmsghdr, return pointer to data */ 499 #define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \ 500 _ALIGN(sizeof(struct cmsghdr))) 501 502 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */ 503 #define CMSG_NXTHDR(mhdr, cmsg) \ 504 ((char *)(cmsg) == NULL ? CMSG_FIRSTHDR(mhdr) : \ 505 ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \ 506 _ALIGN(sizeof(struct cmsghdr)) > \ 507 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \ 508 (struct cmsghdr *)0 : \ 509 (struct cmsghdr *)(void *)((char *)(cmsg) + \ 510 _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len))) 511 512 /* 513 * RFC 2292 requires to check msg_controllen, in case that the kernel returns 514 * an empty list for some reasons. 515 */ 516 #define CMSG_FIRSTHDR(mhdr) \ 517 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ 518 (struct cmsghdr *)(mhdr)->msg_control : \ 519 (struct cmsghdr *)NULL) 520 521 #if __BSD_VISIBLE 522 /* RFC 2292 additions */ 523 #define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l)) 524 #define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l)) 525 #endif 526 527 #ifdef _KERNEL 528 #define CMSG_ALIGN(n) _ALIGN(n) 529 #endif 530 531 /* "Socket"-level control message types: */ 532 #define SCM_RIGHTS 0x01 /* access rights (array of int) */ 533 #if __BSD_VISIBLE 534 #define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */ 535 #define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */ 536 #define SCM_BINTIME 0x04 /* timestamp (struct bintime) */ 537 #endif 538 539 #if __BSD_VISIBLE 540 /* 541 * 4.3 compat sockaddr, move to compat file later 542 */ 543 struct osockaddr { 544 unsigned short sa_family; /* address family */ 545 char sa_data[14]; /* up to 14 bytes of direct address */ 546 }; 547 548 /* 549 * 4.3-compat message header (move to compat file later). 550 */ 551 struct omsghdr { 552 char *msg_name; /* optional address */ 553 int msg_namelen; /* size of address */ 554 struct iovec *msg_iov; /* scatter/gather array */ 555 int msg_iovlen; /* # elements in msg_iov */ 556 char *msg_accrights; /* access rights sent/received */ 557 int msg_accrightslen; 558 }; 559 #endif 560 561 /* 562 * howto arguments for shutdown(2), specified by Posix.1g. 563 */ 564 #define SHUT_RD 0 /* shut down the reading side */ 565 #define SHUT_WR 1 /* shut down the writing side */ 566 #define SHUT_RDWR 2 /* shut down both sides */ 567 568 #if __BSD_VISIBLE 569 /* for SCTP */ 570 /* we cheat and use the SHUT_XX defines for these */ 571 #define PRU_FLUSH_RD SHUT_RD 572 #define PRU_FLUSH_WR SHUT_WR 573 #define PRU_FLUSH_RDWR SHUT_RDWR 574 #endif 575 576 577 #if __BSD_VISIBLE 578 /* 579 * sendfile(2) header/trailer struct 580 */ 581 struct sf_hdtr { 582 struct iovec *headers; /* pointer to an array of header struct iovec's */ 583 int hdr_cnt; /* number of header iovec's */ 584 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */ 585 int trl_cnt; /* number of trailer iovec's */ 586 }; 587 588 /* 589 * Sendfile-specific flag(s) 590 */ 591 #define SF_NODISKIO 0x00000001 592 #define SF_MNOWAIT 0x00000002 /* obsolete */ 593 #define SF_SYNC 0x00000004 594 #define SF_NOCACHE 0x00000010 595 #define SF_FLAGS(rh, flags) (((rh) << 16) | (flags)) 596 597 #ifdef _KERNEL 598 #define SFK_COMPAT 0x00000001 599 #define SF_READAHEAD(flags) ((flags) >> 16) 600 #endif /* _KERNEL */ 601 #endif /* __BSD_VISIBLE */ 602 603 #ifndef _KERNEL 604 605 #include <sys/cdefs.h> 606 607 __BEGIN_DECLS 608 int accept(int, struct sockaddr * __restrict, socklen_t * __restrict); 609 int bind(int, const struct sockaddr *, socklen_t); 610 int connect(int, const struct sockaddr *, socklen_t); 611 #if __BSD_VISIBLE 612 int accept4(int, struct sockaddr * __restrict, socklen_t * __restrict, int); 613 int bindat(int, int, const struct sockaddr *, socklen_t); 614 int connectat(int, int, const struct sockaddr *, socklen_t); 615 #endif 616 int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict); 617 int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict); 618 int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict); 619 int listen(int, int); 620 ssize_t recv(int, void *, size_t, int); 621 ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict); 622 ssize_t recvmsg(int, struct msghdr *, int); 623 ssize_t send(int, const void *, size_t, int); 624 ssize_t sendto(int, const void *, 625 size_t, int, const struct sockaddr *, socklen_t); 626 ssize_t sendmsg(int, const struct msghdr *, int); 627 #if __BSD_VISIBLE 628 int sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int); 629 int setfib(int); 630 #endif 631 int setsockopt(int, int, int, const void *, socklen_t); 632 int shutdown(int, int); 633 int sockatmark(int); 634 int socket(int, int, int); 635 int socketpair(int, int, int, int *); 636 __END_DECLS 637 638 #endif /* !_KERNEL */ 639 640 #ifdef _KERNEL 641 struct socket; 642 643 struct tcpcb *so_sototcpcb(struct socket *so); 644 struct inpcb *so_sotoinpcb(struct socket *so); 645 struct sockbuf *so_sockbuf_snd(struct socket *); 646 struct sockbuf *so_sockbuf_rcv(struct socket *); 647 648 int so_state_get(const struct socket *); 649 void so_state_set(struct socket *, int); 650 651 int so_options_get(const struct socket *); 652 void so_options_set(struct socket *, int); 653 654 int so_error_get(const struct socket *); 655 void so_error_set(struct socket *, int); 656 657 int so_linger_get(const struct socket *); 658 void so_linger_set(struct socket *, int); 659 660 struct protosw *so_protosw_get(const struct socket *); 661 void so_protosw_set(struct socket *, struct protosw *); 662 663 void so_sorwakeup_locked(struct socket *so); 664 void so_sowwakeup_locked(struct socket *so); 665 666 void so_sorwakeup(struct socket *so); 667 void so_sowwakeup(struct socket *so); 668 669 void so_lock(struct socket *so); 670 void so_unlock(struct socket *so); 671 672 void so_listeners_apply_all(struct socket *so, void (*func)(struct socket *, void *), void *arg); 673 674 #endif 675 676 677 #endif /* !_SYS_SOCKET_H_ */ 678