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