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 /* 99 * Option flags per-socket. 100 */ 101 #define SO_DEBUG 0x0001 /* turn on debugging info recording */ 102 #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */ 103 #define SO_REUSEADDR 0x0004 /* allow local address reuse */ 104 #define SO_KEEPALIVE 0x0008 /* keep connections alive */ 105 #define SO_DONTROUTE 0x0010 /* just use interface addresses */ 106 #define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */ 107 #if __BSD_VISIBLE 108 #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */ 109 #endif 110 #define SO_LINGER 0x0080 /* linger on close if data present */ 111 #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */ 112 #if __BSD_VISIBLE 113 #define SO_REUSEPORT 0x0200 /* allow local address & port reuse */ 114 #define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */ 115 #define SO_NOSIGPIPE 0x0800 /* no SIGPIPE from EPIPE */ 116 #define SO_ACCEPTFILTER 0x1000 /* there is an accept filter */ 117 #define SO_BINTIME 0x2000 /* timestamp received dgram traffic */ 118 #endif 119 #define SO_NO_OFFLOAD 0x4000 /* socket cannot be offloaded */ 120 #define SO_NO_DDP 0x8000 /* disable direct data placement */ 121 122 /* 123 * Additional options, not kept in so_options. 124 */ 125 #define SO_SNDBUF 0x1001 /* send buffer size */ 126 #define SO_RCVBUF 0x1002 /* receive buffer size */ 127 #define SO_SNDLOWAT 0x1003 /* send low-water mark */ 128 #define SO_RCVLOWAT 0x1004 /* receive low-water mark */ 129 #define SO_SNDTIMEO 0x1005 /* send timeout */ 130 #define SO_RCVTIMEO 0x1006 /* receive timeout */ 131 #define SO_ERROR 0x1007 /* get error status and clear */ 132 #define SO_TYPE 0x1008 /* get socket type */ 133 #if __BSD_VISIBLE 134 #define SO_LABEL 0x1009 /* socket's MAC label */ 135 #define SO_PEERLABEL 0x1010 /* socket's peer's MAC label */ 136 #define SO_LISTENQLIMIT 0x1011 /* socket's backlog limit */ 137 #define SO_LISTENQLEN 0x1012 /* socket's complete queue length */ 138 #define SO_LISTENINCQLEN 0x1013 /* socket's incomplete queue length */ 139 #define SO_SETFIB 0x1014 /* use this FIB to route */ 140 #define SO_USER_COOKIE 0x1015 /* user cookie (dummynet etc.) */ 141 #define SO_PROTOCOL 0x1016 /* get socket protocol (Linux name) */ 142 #define SO_PROTOTYPE SO_PROTOCOL /* alias for SO_PROTOCOL (SunOS name) */ 143 #endif 144 145 /* 146 * Structure used for manipulating linger option. 147 */ 148 struct linger { 149 int l_onoff; /* option on/off */ 150 int l_linger; /* linger time */ 151 }; 152 153 #if __BSD_VISIBLE 154 struct accept_filter_arg { 155 char af_name[16]; 156 char af_arg[256-16]; 157 }; 158 #endif 159 160 /* 161 * Level number for (get/set)sockopt() to apply to socket itself. 162 */ 163 #define SOL_SOCKET 0xffff /* options for socket level */ 164 165 /* 166 * Address families. 167 */ 168 #define AF_UNSPEC 0 /* unspecified */ 169 #if __BSD_VISIBLE 170 #define AF_LOCAL AF_UNIX /* local to host (pipes, portals) */ 171 #endif 172 #define AF_UNIX 1 /* standardized name for AF_LOCAL */ 173 #define AF_INET 2 /* internetwork: UDP, TCP, etc. */ 174 #if __BSD_VISIBLE 175 #define AF_IMPLINK 3 /* arpanet imp addresses */ 176 #define AF_PUP 4 /* pup protocols: e.g. BSP */ 177 #define AF_CHAOS 5 /* mit CHAOS protocols */ 178 #define AF_NETBIOS 6 /* SMB protocols */ 179 #define AF_ISO 7 /* ISO protocols */ 180 #define AF_OSI AF_ISO 181 #define AF_ECMA 8 /* European computer manufacturers */ 182 #define AF_DATAKIT 9 /* datakit protocols */ 183 #define AF_CCITT 10 /* CCITT protocols, X.25 etc */ 184 #define AF_SNA 11 /* IBM SNA */ 185 #define AF_DECnet 12 /* DECnet */ 186 #define AF_DLI 13 /* DEC Direct data link interface */ 187 #define AF_LAT 14 /* LAT */ 188 #define AF_HYLINK 15 /* NSC Hyperchannel */ 189 #define AF_APPLETALK 16 /* Apple Talk */ 190 #define AF_ROUTE 17 /* Internal Routing Protocol */ 191 #define AF_LINK 18 /* Link layer interface */ 192 #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */ 193 #define AF_COIP 20 /* connection-oriented IP, aka ST II */ 194 #define AF_CNT 21 /* Computer Network Technology */ 195 #define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */ 196 #define AF_IPX 23 /* Novell Internet Protocol */ 197 #define AF_SIP 24 /* Simple Internet Protocol */ 198 #define pseudo_AF_PIP 25 /* Help Identify PIP packets */ 199 #define AF_ISDN 26 /* Integrated Services Digital Network*/ 200 #define AF_E164 AF_ISDN /* CCITT E.164 recommendation */ 201 #define pseudo_AF_KEY 27 /* Internal key-management function */ 202 #endif 203 #define AF_INET6 28 /* IPv6 */ 204 #if __BSD_VISIBLE 205 #define AF_NATM 29 /* native ATM access */ 206 #define AF_ATM 30 /* ATM */ 207 #define pseudo_AF_HDRCMPLT 31 /* Used by BPF to not rewrite headers 208 * in interface output routine 209 */ 210 #define AF_NETGRAPH 32 /* Netgraph sockets */ 211 #define AF_SLOW 33 /* 802.3ad slow protocol */ 212 #define AF_SCLUSTER 34 /* Sitara cluster protocol */ 213 #define AF_ARP 35 214 #define AF_BLUETOOTH 36 /* Bluetooth sockets */ 215 #define AF_IEEE80211 37 /* IEEE 802.11 protocol */ 216 #define AF_MAX 38 217 /* 218 * When allocating a new AF_ constant, please only allocate 219 * even numbered constants for FreeBSD until 134 as odd numbered AF_ 220 * constants 39-133 are now reserved for vendors. 221 */ 222 #define AF_VENDOR00 39 223 #define AF_VENDOR01 41 224 #define AF_VENDOR02 43 225 #define AF_VENDOR03 45 226 #define AF_VENDOR04 47 227 #define AF_VENDOR05 49 228 #define AF_VENDOR06 51 229 #define AF_VENDOR07 53 230 #define AF_VENDOR08 55 231 #define AF_VENDOR09 57 232 #define AF_VENDOR10 59 233 #define AF_VENDOR11 61 234 #define AF_VENDOR12 63 235 #define AF_VENDOR13 65 236 #define AF_VENDOR14 67 237 #define AF_VENDOR15 69 238 #define AF_VENDOR16 71 239 #define AF_VENDOR17 73 240 #define AF_VENDOR18 75 241 #define AF_VENDOR19 77 242 #define AF_VENDOR20 79 243 #define AF_VENDOR21 81 244 #define AF_VENDOR22 83 245 #define AF_VENDOR23 85 246 #define AF_VENDOR24 87 247 #define AF_VENDOR25 89 248 #define AF_VENDOR26 91 249 #define AF_VENDOR27 93 250 #define AF_VENDOR28 95 251 #define AF_VENDOR29 97 252 #define AF_VENDOR30 99 253 #define AF_VENDOR31 101 254 #define AF_VENDOR32 103 255 #define AF_VENDOR33 105 256 #define AF_VENDOR34 107 257 #define AF_VENDOR35 109 258 #define AF_VENDOR36 111 259 #define AF_VENDOR37 113 260 #define AF_VENDOR38 115 261 #define AF_VENDOR39 117 262 #define AF_VENDOR40 119 263 #define AF_VENDOR41 121 264 #define AF_VENDOR42 123 265 #define AF_VENDOR43 125 266 #define AF_VENDOR44 127 267 #define AF_VENDOR45 129 268 #define AF_VENDOR46 131 269 #define AF_VENDOR47 133 270 #endif 271 272 /* 273 * Structure used by kernel to store most 274 * addresses. 275 */ 276 struct sockaddr { 277 unsigned char sa_len; /* total length */ 278 sa_family_t sa_family; /* address family */ 279 char sa_data[14]; /* actually longer; address value */ 280 }; 281 #if __BSD_VISIBLE 282 #define SOCK_MAXADDRLEN 255 /* longest possible addresses */ 283 284 /* 285 * Structure used by kernel to pass protocol 286 * information in raw sockets. 287 */ 288 struct sockproto { 289 unsigned short sp_family; /* address family */ 290 unsigned short sp_protocol; /* protocol */ 291 }; 292 #endif 293 294 #include <sys/_sockaddr_storage.h> 295 296 #if __BSD_VISIBLE 297 /* 298 * Protocol families, same as address families for now. 299 */ 300 #define PF_UNSPEC AF_UNSPEC 301 #define PF_LOCAL AF_LOCAL 302 #define PF_UNIX PF_LOCAL /* backward compatibility */ 303 #define PF_INET AF_INET 304 #define PF_IMPLINK AF_IMPLINK 305 #define PF_PUP AF_PUP 306 #define PF_CHAOS AF_CHAOS 307 #define PF_NETBIOS AF_NETBIOS 308 #define PF_ISO AF_ISO 309 #define PF_OSI AF_ISO 310 #define PF_ECMA AF_ECMA 311 #define PF_DATAKIT AF_DATAKIT 312 #define PF_CCITT AF_CCITT 313 #define PF_SNA AF_SNA 314 #define PF_DECnet AF_DECnet 315 #define PF_DLI AF_DLI 316 #define PF_LAT AF_LAT 317 #define PF_HYLINK AF_HYLINK 318 #define PF_APPLETALK AF_APPLETALK 319 #define PF_ROUTE AF_ROUTE 320 #define PF_LINK AF_LINK 321 #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */ 322 #define PF_COIP AF_COIP 323 #define PF_CNT AF_CNT 324 #define PF_SIP AF_SIP 325 #define PF_IPX AF_IPX 326 #define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */ 327 #define PF_PIP pseudo_AF_PIP 328 #define PF_ISDN AF_ISDN 329 #define PF_KEY pseudo_AF_KEY 330 #define PF_INET6 AF_INET6 331 #define PF_NATM AF_NATM 332 #define PF_ATM AF_ATM 333 #define PF_NETGRAPH AF_NETGRAPH 334 #define PF_SLOW AF_SLOW 335 #define PF_SCLUSTER AF_SCLUSTER 336 #define PF_ARP AF_ARP 337 #define PF_BLUETOOTH AF_BLUETOOTH 338 339 #define PF_MAX AF_MAX 340 341 /* 342 * Definitions for network related sysctl, CTL_NET. 343 * 344 * Second level is protocol family. 345 * Third level is protocol number. 346 * 347 * Further levels are defined by the individual families below. 348 */ 349 #define NET_MAXID AF_MAX 350 351 #define CTL_NET_NAMES { \ 352 { 0, 0 }, \ 353 { "unix", CTLTYPE_NODE }, \ 354 { "inet", CTLTYPE_NODE }, \ 355 { "implink", CTLTYPE_NODE }, \ 356 { "pup", CTLTYPE_NODE }, \ 357 { "chaos", CTLTYPE_NODE }, \ 358 { "xerox_ns", CTLTYPE_NODE }, \ 359 { "iso", CTLTYPE_NODE }, \ 360 { "emca", CTLTYPE_NODE }, \ 361 { "datakit", CTLTYPE_NODE }, \ 362 { "ccitt", CTLTYPE_NODE }, \ 363 { "ibm_sna", CTLTYPE_NODE }, \ 364 { "decnet", CTLTYPE_NODE }, \ 365 { "dec_dli", CTLTYPE_NODE }, \ 366 { "lat", CTLTYPE_NODE }, \ 367 { "hylink", CTLTYPE_NODE }, \ 368 { "appletalk", CTLTYPE_NODE }, \ 369 { "route", CTLTYPE_NODE }, \ 370 { "link_layer", CTLTYPE_NODE }, \ 371 { "xtp", CTLTYPE_NODE }, \ 372 { "coip", CTLTYPE_NODE }, \ 373 { "cnt", CTLTYPE_NODE }, \ 374 { "rtip", CTLTYPE_NODE }, \ 375 { "ipx", CTLTYPE_NODE }, \ 376 { "sip", CTLTYPE_NODE }, \ 377 { "pip", CTLTYPE_NODE }, \ 378 { "isdn", CTLTYPE_NODE }, \ 379 { "key", CTLTYPE_NODE }, \ 380 { "inet6", CTLTYPE_NODE }, \ 381 { "natm", CTLTYPE_NODE }, \ 382 { "atm", CTLTYPE_NODE }, \ 383 { "hdrcomplete", CTLTYPE_NODE }, \ 384 { "netgraph", CTLTYPE_NODE }, \ 385 { "snp", CTLTYPE_NODE }, \ 386 { "scp", CTLTYPE_NODE }, \ 387 } 388 389 /* 390 * PF_ROUTE - Routing table 391 * 392 * Three additional levels are defined: 393 * Fourth: address family, 0 is wildcard 394 * Fifth: type of info, defined below 395 * Sixth: flag(s) to mask with for NET_RT_FLAGS 396 */ 397 #define NET_RT_DUMP 1 /* dump; may limit to a.f. */ 398 #define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */ 399 #define NET_RT_IFLIST 3 /* survey interface list */ 400 #define NET_RT_IFMALIST 4 /* return multicast address list */ 401 #define NET_RT_IFLISTL 5 /* Survey interface list, using 'l'en 402 * versions of msghdr structs. */ 403 #define NET_RT_MAXID 6 404 405 #define CTL_NET_RT_NAMES { \ 406 { 0, 0 }, \ 407 { "dump", CTLTYPE_STRUCT }, \ 408 { "flags", CTLTYPE_STRUCT }, \ 409 { "iflist", CTLTYPE_STRUCT }, \ 410 { "ifmalist", CTLTYPE_STRUCT }, \ 411 { "iflistl", CTLTYPE_STRUCT }, \ 412 } 413 #endif /* __BSD_VISIBLE */ 414 415 /* 416 * Maximum queue length specifiable by listen. 417 */ 418 #define SOMAXCONN 128 419 420 /* 421 * Message header for recvmsg and sendmsg calls. 422 * Used value-result for recvmsg, value only for sendmsg. 423 */ 424 struct msghdr { 425 void *msg_name; /* optional address */ 426 socklen_t msg_namelen; /* size of address */ 427 struct iovec *msg_iov; /* scatter/gather array */ 428 int msg_iovlen; /* # elements in msg_iov */ 429 void *msg_control; /* ancillary data, see below */ 430 socklen_t msg_controllen; /* ancillary data buffer len */ 431 int msg_flags; /* flags on received message */ 432 }; 433 434 #define MSG_OOB 0x1 /* process out-of-band data */ 435 #define MSG_PEEK 0x2 /* peek at incoming message */ 436 #define MSG_DONTROUTE 0x4 /* send without using routing tables */ 437 #define MSG_EOR 0x8 /* data completes record */ 438 #define MSG_TRUNC 0x10 /* data discarded before delivery */ 439 #define MSG_CTRUNC 0x20 /* control data lost before delivery */ 440 #define MSG_WAITALL 0x40 /* wait for full request or error */ 441 #define MSG_NOTIFICATION 0x2000 /* SCTP notification */ 442 #if __BSD_VISIBLE 443 #define MSG_DONTWAIT 0x80 /* this message should be nonblocking */ 444 #define MSG_EOF 0x100 /* data completes connection */ 445 #define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */ 446 #define MSG_COMPAT 0x8000 /* used in sendit() */ 447 #endif 448 #ifdef _KERNEL 449 #define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */ 450 #endif 451 #if __BSD_VISIBLE 452 #define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */ 453 #endif 454 455 /* 456 * Header for ancillary data objects in msg_control buffer. 457 * Used for additional information with/about a datagram 458 * not expressible by flags. The format is a sequence 459 * of message elements headed by cmsghdr structures. 460 */ 461 struct cmsghdr { 462 socklen_t cmsg_len; /* data byte count, including hdr */ 463 int cmsg_level; /* originating protocol */ 464 int cmsg_type; /* protocol-specific type */ 465 /* followed by u_char cmsg_data[]; */ 466 }; 467 468 #if __BSD_VISIBLE 469 /* 470 * While we may have more groups than this, the cmsgcred struct must 471 * be able to fit in an mbuf and we have historically supported a 472 * maximum of 16 groups. 473 */ 474 #define CMGROUP_MAX 16 475 476 /* 477 * Credentials structure, used to verify the identity of a peer 478 * process that has sent us a message. This is allocated by the 479 * peer process but filled in by the kernel. This prevents the 480 * peer from lying about its identity. (Note that cmcred_groups[0] 481 * is the effective GID.) 482 */ 483 struct cmsgcred { 484 pid_t cmcred_pid; /* PID of sending process */ 485 uid_t cmcred_uid; /* real UID of sending process */ 486 uid_t cmcred_euid; /* effective UID of sending process */ 487 gid_t cmcred_gid; /* real GID of sending process */ 488 short cmcred_ngroups; /* number or groups */ 489 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */ 490 }; 491 492 /* 493 * Socket credentials. 494 */ 495 struct sockcred { 496 uid_t sc_uid; /* real user id */ 497 uid_t sc_euid; /* effective user id */ 498 gid_t sc_gid; /* real group id */ 499 gid_t sc_egid; /* effective group id */ 500 int sc_ngroups; /* number of supplemental groups */ 501 gid_t sc_groups[1]; /* variable length */ 502 }; 503 504 /* 505 * Compute size of a sockcred structure with groups. 506 */ 507 #define SOCKCREDSIZE(ngrps) \ 508 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1))) 509 510 #endif /* __BSD_VISIBLE */ 511 512 /* given pointer to struct cmsghdr, return pointer to data */ 513 #define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \ 514 _ALIGN(sizeof(struct cmsghdr))) 515 516 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */ 517 #define CMSG_NXTHDR(mhdr, cmsg) \ 518 ((char *)(cmsg) == NULL ? CMSG_FIRSTHDR(mhdr) : \ 519 ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \ 520 _ALIGN(sizeof(struct cmsghdr)) > \ 521 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \ 522 (struct cmsghdr *)0 : \ 523 (struct cmsghdr *)(void *)((char *)(cmsg) + \ 524 _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len))) 525 526 /* 527 * RFC 2292 requires to check msg_controllen, in case that the kernel returns 528 * an empty list for some reasons. 529 */ 530 #define CMSG_FIRSTHDR(mhdr) \ 531 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ 532 (struct cmsghdr *)(mhdr)->msg_control : \ 533 (struct cmsghdr *)NULL) 534 535 #if __BSD_VISIBLE 536 /* RFC 2292 additions */ 537 #define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l)) 538 #define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l)) 539 #endif 540 541 #ifdef _KERNEL 542 #define CMSG_ALIGN(n) _ALIGN(n) 543 #endif 544 545 /* "Socket"-level control message types: */ 546 #define SCM_RIGHTS 0x01 /* access rights (array of int) */ 547 #if __BSD_VISIBLE 548 #define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */ 549 #define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */ 550 #define SCM_BINTIME 0x04 /* timestamp (struct bintime) */ 551 #endif 552 553 #if __BSD_VISIBLE 554 /* 555 * 4.3 compat sockaddr, move to compat file later 556 */ 557 struct osockaddr { 558 unsigned short sa_family; /* address family */ 559 char sa_data[14]; /* up to 14 bytes of direct address */ 560 }; 561 562 /* 563 * 4.3-compat message header (move to compat file later). 564 */ 565 struct omsghdr { 566 char *msg_name; /* optional address */ 567 int msg_namelen; /* size of address */ 568 struct iovec *msg_iov; /* scatter/gather array */ 569 int msg_iovlen; /* # elements in msg_iov */ 570 char *msg_accrights; /* access rights sent/received */ 571 int msg_accrightslen; 572 }; 573 #endif 574 575 /* 576 * howto arguments for shutdown(2), specified by Posix.1g. 577 */ 578 #define SHUT_RD 0 /* shut down the reading side */ 579 #define SHUT_WR 1 /* shut down the writing side */ 580 #define SHUT_RDWR 2 /* shut down both sides */ 581 582 /* we cheat and use the SHUT_XX defines for these */ 583 #define PRU_FLUSH_RD SHUT_RD 584 #define PRU_FLUSH_WR SHUT_WR 585 #define PRU_FLUSH_RDWR SHUT_RDWR 586 587 588 #if __BSD_VISIBLE 589 /* 590 * sendfile(2) header/trailer struct 591 */ 592 struct sf_hdtr { 593 struct iovec *headers; /* pointer to an array of header struct iovec's */ 594 int hdr_cnt; /* number of header iovec's */ 595 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */ 596 int trl_cnt; /* number of trailer iovec's */ 597 }; 598 599 /* 600 * Sendfile-specific flag(s) 601 */ 602 #define SF_NODISKIO 0x00000001 603 #define SF_MNOWAIT 0x00000002 604 #define SF_SYNC 0x00000004 605 #endif 606 607 #ifndef _KERNEL 608 609 #include <sys/cdefs.h> 610 611 __BEGIN_DECLS 612 int accept(int, struct sockaddr * __restrict, socklen_t * __restrict); 613 int bind(int, const struct sockaddr *, socklen_t); 614 int connect(int, const struct sockaddr *, socklen_t); 615 int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict); 616 int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict); 617 int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict); 618 int listen(int, int); 619 ssize_t recv(int, void *, size_t, int); 620 ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict); 621 ssize_t recvmsg(int, struct msghdr *, int); 622 ssize_t send(int, const void *, size_t, int); 623 ssize_t sendto(int, const void *, 624 size_t, int, const struct sockaddr *, socklen_t); 625 ssize_t sendmsg(int, const struct msghdr *, int); 626 #if __BSD_VISIBLE 627 int sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int); 628 int setfib(int); 629 #endif 630 int setsockopt(int, int, int, const void *, socklen_t); 631 int shutdown(int, int); 632 int sockatmark(int); 633 int socket(int, int, int); 634 int socketpair(int, int, int, int *); 635 __END_DECLS 636 637 #endif /* !_KERNEL */ 638 639 #ifdef _KERNEL 640 struct socket; 641 642 struct tcpcb *so_sototcpcb(struct socket *so); 643 struct inpcb *so_sotoinpcb(struct socket *so); 644 struct sockbuf *so_sockbuf_snd(struct socket *); 645 struct sockbuf *so_sockbuf_rcv(struct socket *); 646 647 int so_state_get(const struct socket *); 648 void so_state_set(struct socket *, int); 649 650 int so_options_get(const struct socket *); 651 void so_options_set(struct socket *, int); 652 653 int so_error_get(const struct socket *); 654 void so_error_set(struct socket *, int); 655 656 int so_linger_get(const struct socket *); 657 void so_linger_set(struct socket *, int); 658 659 struct protosw *so_protosw_get(const struct socket *); 660 void so_protosw_set(struct socket *, struct protosw *); 661 662 void so_sorwakeup_locked(struct socket *so); 663 void so_sowwakeup_locked(struct socket *so); 664 665 void so_sorwakeup(struct socket *so); 666 void so_sowwakeup(struct socket *so); 667 668 void so_lock(struct socket *so); 669 void so_unlock(struct socket *so); 670 671 void so_listeners_apply_all(struct socket *so, void (*func)(struct socket *, void *), void *arg); 672 673 #endif 674 675 676 #endif /* !_SYS_SOCKET_H_ */ 677