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: stable/9/sys/sys/socket.h 273864 2014-10-30 15:41:25Z hselasky $ 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 * Space reserved for new socket options added by third-party vendors. 147 * This range applies to all socket option levels. New socket options 148 * in FreeBSD should always use an option value less than SO_VENDOR. 149 */ 150 #if __BSD_VISIBLE 151 #define SO_VENDOR 0x80000000 152 #endif 153 154 /* 155 * Structure used for manipulating linger option. 156 */ 157 struct linger { 158 int l_onoff; /* option on/off */ 159 int l_linger; /* linger time */ 160 }; 161 162 #if __BSD_VISIBLE 163 struct accept_filter_arg { 164 char af_name[16]; 165 char af_arg[256-16]; 166 }; 167 #endif 168 169 /* 170 * Level number for (get/set)sockopt() to apply to socket itself. 171 */ 172 #define SOL_SOCKET 0xffff /* options for socket level */ 173 174 /* 175 * Address families. 176 */ 177 #define AF_UNSPEC 0 /* unspecified */ 178 #if __BSD_VISIBLE 179 #define AF_LOCAL AF_UNIX /* local to host (pipes, portals) */ 180 #endif 181 #define AF_UNIX 1 /* standardized name for AF_LOCAL */ 182 #define AF_INET 2 /* internetwork: UDP, TCP, etc. */ 183 #if __BSD_VISIBLE 184 #define AF_IMPLINK 3 /* arpanet imp addresses */ 185 #define AF_PUP 4 /* pup protocols: e.g. BSP */ 186 #define AF_CHAOS 5 /* mit CHAOS protocols */ 187 #define AF_NETBIOS 6 /* SMB protocols */ 188 #define AF_ISO 7 /* ISO protocols */ 189 #define AF_OSI AF_ISO 190 #define AF_ECMA 8 /* European computer manufacturers */ 191 #define AF_DATAKIT 9 /* datakit protocols */ 192 #define AF_CCITT 10 /* CCITT protocols, X.25 etc */ 193 #define AF_SNA 11 /* IBM SNA */ 194 #define AF_DECnet 12 /* DECnet */ 195 #define AF_DLI 13 /* DEC Direct data link interface */ 196 #define AF_LAT 14 /* LAT */ 197 #define AF_HYLINK 15 /* NSC Hyperchannel */ 198 #define AF_APPLETALK 16 /* Apple Talk */ 199 #define AF_ROUTE 17 /* Internal Routing Protocol */ 200 #define AF_LINK 18 /* Link layer interface */ 201 #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */ 202 #define AF_COIP 20 /* connection-oriented IP, aka ST II */ 203 #define AF_CNT 21 /* Computer Network Technology */ 204 #define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */ 205 #define AF_IPX 23 /* Novell Internet Protocol */ 206 #define AF_SIP 24 /* Simple Internet Protocol */ 207 #define pseudo_AF_PIP 25 /* Help Identify PIP packets */ 208 #define AF_ISDN 26 /* Integrated Services Digital Network*/ 209 #define AF_E164 AF_ISDN /* CCITT E.164 recommendation */ 210 #define pseudo_AF_KEY 27 /* Internal key-management function */ 211 #endif 212 #define AF_INET6 28 /* IPv6 */ 213 #if __BSD_VISIBLE 214 #define AF_NATM 29 /* native ATM access */ 215 #define AF_ATM 30 /* ATM */ 216 #define pseudo_AF_HDRCMPLT 31 /* Used by BPF to not rewrite headers 217 * in interface output routine 218 */ 219 #define AF_NETGRAPH 32 /* Netgraph sockets */ 220 #define AF_SLOW 33 /* 802.3ad slow protocol */ 221 #define AF_SCLUSTER 34 /* Sitara cluster protocol */ 222 #define AF_ARP 35 223 #define AF_BLUETOOTH 36 /* Bluetooth sockets */ 224 #define AF_IEEE80211 37 /* IEEE 802.11 protocol */ 225 #define AF_INET_SDP 40 /* OFED Socket Direct Protocol ipv4 */ 226 #define AF_INET6_SDP 42 /* OFED Socket Direct Protocol ipv6 */ 227 #define AF_MAX 42 228 /* 229 * When allocating a new AF_ constant, please only allocate 230 * even numbered constants for FreeBSD until 134 as odd numbered AF_ 231 * constants 39-133 are now reserved for vendors. 232 */ 233 #define AF_VENDOR00 39 234 #define AF_VENDOR01 41 235 #define AF_VENDOR02 43 236 #define AF_VENDOR03 45 237 #define AF_VENDOR04 47 238 #define AF_VENDOR05 49 239 #define AF_VENDOR06 51 240 #define AF_VENDOR07 53 241 #define AF_VENDOR08 55 242 #define AF_VENDOR09 57 243 #define AF_VENDOR10 59 244 #define AF_VENDOR11 61 245 #define AF_VENDOR12 63 246 #define AF_VENDOR13 65 247 #define AF_VENDOR14 67 248 #define AF_VENDOR15 69 249 #define AF_VENDOR16 71 250 #define AF_VENDOR17 73 251 #define AF_VENDOR18 75 252 #define AF_VENDOR19 77 253 #define AF_VENDOR20 79 254 #define AF_VENDOR21 81 255 #define AF_VENDOR22 83 256 #define AF_VENDOR23 85 257 #define AF_VENDOR24 87 258 #define AF_VENDOR25 89 259 #define AF_VENDOR26 91 260 #define AF_VENDOR27 93 261 #define AF_VENDOR28 95 262 #define AF_VENDOR29 97 263 #define AF_VENDOR30 99 264 #define AF_VENDOR31 101 265 #define AF_VENDOR32 103 266 #define AF_VENDOR33 105 267 #define AF_VENDOR34 107 268 #define AF_VENDOR35 109 269 #define AF_VENDOR36 111 270 #define AF_VENDOR37 113 271 #define AF_VENDOR38 115 272 #define AF_VENDOR39 117 273 #define AF_VENDOR40 119 274 #define AF_VENDOR41 121 275 #define AF_VENDOR42 123 276 #define AF_VENDOR43 125 277 #define AF_VENDOR44 127 278 #define AF_VENDOR45 129 279 #define AF_VENDOR46 131 280 #define AF_VENDOR47 133 281 #endif 282 283 /* 284 * Structure used by kernel to store most 285 * addresses. 286 */ 287 struct sockaddr { 288 unsigned char sa_len; /* total length */ 289 sa_family_t sa_family; /* address family */ 290 char sa_data[14]; /* actually longer; address value */ 291 }; 292 #if __BSD_VISIBLE 293 #define SOCK_MAXADDRLEN 255 /* longest possible addresses */ 294 295 /* 296 * Structure used by kernel to pass protocol 297 * information in raw sockets. 298 */ 299 struct sockproto { 300 unsigned short sp_family; /* address family */ 301 unsigned short sp_protocol; /* protocol */ 302 }; 303 #endif 304 305 #include <sys/_sockaddr_storage.h> 306 307 #if __BSD_VISIBLE 308 /* 309 * Protocol families, same as address families for now. 310 */ 311 #define PF_UNSPEC AF_UNSPEC 312 #define PF_LOCAL AF_LOCAL 313 #define PF_UNIX PF_LOCAL /* backward compatibility */ 314 #define PF_INET AF_INET 315 #define PF_IMPLINK AF_IMPLINK 316 #define PF_PUP AF_PUP 317 #define PF_CHAOS AF_CHAOS 318 #define PF_NETBIOS AF_NETBIOS 319 #define PF_ISO AF_ISO 320 #define PF_OSI AF_ISO 321 #define PF_ECMA AF_ECMA 322 #define PF_DATAKIT AF_DATAKIT 323 #define PF_CCITT AF_CCITT 324 #define PF_SNA AF_SNA 325 #define PF_DECnet AF_DECnet 326 #define PF_DLI AF_DLI 327 #define PF_LAT AF_LAT 328 #define PF_HYLINK AF_HYLINK 329 #define PF_APPLETALK AF_APPLETALK 330 #define PF_ROUTE AF_ROUTE 331 #define PF_LINK AF_LINK 332 #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */ 333 #define PF_COIP AF_COIP 334 #define PF_CNT AF_CNT 335 #define PF_SIP AF_SIP 336 #define PF_IPX AF_IPX 337 #define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */ 338 #define PF_PIP pseudo_AF_PIP 339 #define PF_ISDN AF_ISDN 340 #define PF_KEY pseudo_AF_KEY 341 #define PF_INET6 AF_INET6 342 #define PF_NATM AF_NATM 343 #define PF_ATM AF_ATM 344 #define PF_NETGRAPH AF_NETGRAPH 345 #define PF_SLOW AF_SLOW 346 #define PF_SCLUSTER AF_SCLUSTER 347 #define PF_ARP AF_ARP 348 #define PF_BLUETOOTH AF_BLUETOOTH 349 #define PF_INET_SDP AF_INET_SDP 350 #define PF_INET6_SDP AF_INET6_SDP 351 352 #define PF_MAX AF_MAX 353 354 /* 355 * Definitions for network related sysctl, CTL_NET. 356 * 357 * Second level is protocol family. 358 * Third level is protocol number. 359 * 360 * Further levels are defined by the individual families below. 361 */ 362 #define NET_MAXID AF_MAX 363 364 #define CTL_NET_NAMES { \ 365 { 0, 0 }, \ 366 { "unix", CTLTYPE_NODE }, \ 367 { "inet", CTLTYPE_NODE }, \ 368 { "implink", CTLTYPE_NODE }, \ 369 { "pup", CTLTYPE_NODE }, \ 370 { "chaos", CTLTYPE_NODE }, \ 371 { "xerox_ns", CTLTYPE_NODE }, \ 372 { "iso", CTLTYPE_NODE }, \ 373 { "emca", CTLTYPE_NODE }, \ 374 { "datakit", CTLTYPE_NODE }, \ 375 { "ccitt", CTLTYPE_NODE }, \ 376 { "ibm_sna", CTLTYPE_NODE }, \ 377 { "decnet", CTLTYPE_NODE }, \ 378 { "dec_dli", CTLTYPE_NODE }, \ 379 { "lat", CTLTYPE_NODE }, \ 380 { "hylink", CTLTYPE_NODE }, \ 381 { "appletalk", CTLTYPE_NODE }, \ 382 { "route", CTLTYPE_NODE }, \ 383 { "link_layer", CTLTYPE_NODE }, \ 384 { "xtp", CTLTYPE_NODE }, \ 385 { "coip", CTLTYPE_NODE }, \ 386 { "cnt", CTLTYPE_NODE }, \ 387 { "rtip", CTLTYPE_NODE }, \ 388 { "ipx", CTLTYPE_NODE }, \ 389 { "sip", CTLTYPE_NODE }, \ 390 { "pip", CTLTYPE_NODE }, \ 391 { "isdn", CTLTYPE_NODE }, \ 392 { "key", CTLTYPE_NODE }, \ 393 { "inet6", CTLTYPE_NODE }, \ 394 { "natm", CTLTYPE_NODE }, \ 395 { "atm", CTLTYPE_NODE }, \ 396 { "hdrcomplete", CTLTYPE_NODE }, \ 397 { "netgraph", CTLTYPE_NODE }, \ 398 { "snp", CTLTYPE_NODE }, \ 399 { "scp", CTLTYPE_NODE }, \ 400 } 401 402 /* 403 * PF_ROUTE - Routing table 404 * 405 * Three additional levels are defined: 406 * Fourth: address family, 0 is wildcard 407 * Fifth: type of info, defined below 408 * Sixth: flag(s) to mask with for NET_RT_FLAGS 409 */ 410 #define NET_RT_DUMP 1 /* dump; may limit to a.f. */ 411 #define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */ 412 #define NET_RT_IFLIST 3 /* survey interface list */ 413 #define NET_RT_IFMALIST 4 /* return multicast address list */ 414 #define NET_RT_IFLISTL 5 /* Survey interface list, using 'l'en 415 * versions of msghdr structs. */ 416 #define NET_RT_MAXID 6 417 418 #define CTL_NET_RT_NAMES { \ 419 { 0, 0 }, \ 420 { "dump", CTLTYPE_STRUCT }, \ 421 { "flags", CTLTYPE_STRUCT }, \ 422 { "iflist", CTLTYPE_STRUCT }, \ 423 { "ifmalist", CTLTYPE_STRUCT }, \ 424 { "iflistl", CTLTYPE_STRUCT }, \ 425 } 426 #endif /* __BSD_VISIBLE */ 427 428 /* 429 * Maximum queue length specifiable by listen. 430 */ 431 #define SOMAXCONN 128 432 433 /* 434 * Message header for recvmsg and sendmsg calls. 435 * Used value-result for recvmsg, value only for sendmsg. 436 */ 437 struct msghdr { 438 void *msg_name; /* optional address */ 439 socklen_t msg_namelen; /* size of address */ 440 struct iovec *msg_iov; /* scatter/gather array */ 441 int msg_iovlen; /* # elements in msg_iov */ 442 void *msg_control; /* ancillary data, see below */ 443 socklen_t msg_controllen; /* ancillary data buffer len */ 444 int msg_flags; /* flags on received message */ 445 }; 446 447 #define MSG_OOB 0x1 /* process out-of-band data */ 448 #define MSG_PEEK 0x2 /* peek at incoming message */ 449 #define MSG_DONTROUTE 0x4 /* send without using routing tables */ 450 #define MSG_EOR 0x8 /* data completes record */ 451 #define MSG_TRUNC 0x10 /* data discarded before delivery */ 452 #define MSG_CTRUNC 0x20 /* control data lost before delivery */ 453 #define MSG_WAITALL 0x40 /* wait for full request or error */ 454 #define MSG_NOTIFICATION 0x2000 /* SCTP notification */ 455 #if __BSD_VISIBLE 456 #define MSG_DONTWAIT 0x80 /* this message should be nonblocking */ 457 #define MSG_EOF 0x100 /* data completes connection */ 458 #define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */ 459 #define MSG_COMPAT 0x8000 /* used in sendit() */ 460 #endif 461 #ifdef _KERNEL 462 #define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */ 463 #endif 464 #if __BSD_VISIBLE 465 #define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */ 466 #endif 467 468 /* 469 * Header for ancillary data objects in msg_control buffer. 470 * Used for additional information with/about a datagram 471 * not expressible by flags. The format is a sequence 472 * of message elements headed by cmsghdr structures. 473 */ 474 struct cmsghdr { 475 socklen_t cmsg_len; /* data byte count, including hdr */ 476 int cmsg_level; /* originating protocol */ 477 int cmsg_type; /* protocol-specific type */ 478 /* followed by u_char cmsg_data[]; */ 479 }; 480 481 #if __BSD_VISIBLE 482 /* 483 * While we may have more groups than this, the cmsgcred struct must 484 * be able to fit in an mbuf and we have historically supported a 485 * maximum of 16 groups. 486 */ 487 #define CMGROUP_MAX 16 488 489 /* 490 * Credentials structure, used to verify the identity of a peer 491 * process that has sent us a message. This is allocated by the 492 * peer process but filled in by the kernel. This prevents the 493 * peer from lying about its identity. (Note that cmcred_groups[0] 494 * is the effective GID.) 495 */ 496 struct cmsgcred { 497 pid_t cmcred_pid; /* PID of sending process */ 498 uid_t cmcred_uid; /* real UID of sending process */ 499 uid_t cmcred_euid; /* effective UID of sending process */ 500 gid_t cmcred_gid; /* real GID of sending process */ 501 short cmcred_ngroups; /* number or groups */ 502 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */ 503 }; 504 505 /* 506 * Socket credentials. 507 */ 508 struct sockcred { 509 uid_t sc_uid; /* real user id */ 510 uid_t sc_euid; /* effective user id */ 511 gid_t sc_gid; /* real group id */ 512 gid_t sc_egid; /* effective group id */ 513 int sc_ngroups; /* number of supplemental groups */ 514 gid_t sc_groups[1]; /* variable length */ 515 }; 516 517 /* 518 * Compute size of a sockcred structure with groups. 519 */ 520 #define SOCKCREDSIZE(ngrps) \ 521 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1))) 522 523 #endif /* __BSD_VISIBLE */ 524 525 /* given pointer to struct cmsghdr, return pointer to data */ 526 #define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \ 527 _ALIGN(sizeof(struct cmsghdr))) 528 529 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */ 530 #define CMSG_NXTHDR(mhdr, cmsg) \ 531 ((char *)(cmsg) == NULL ? CMSG_FIRSTHDR(mhdr) : \ 532 ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \ 533 _ALIGN(sizeof(struct cmsghdr)) > \ 534 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \ 535 (struct cmsghdr *)0 : \ 536 (struct cmsghdr *)(void *)((char *)(cmsg) + \ 537 _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len))) 538 539 /* 540 * RFC 2292 requires to check msg_controllen, in case that the kernel returns 541 * an empty list for some reasons. 542 */ 543 #define CMSG_FIRSTHDR(mhdr) \ 544 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ 545 (struct cmsghdr *)(mhdr)->msg_control : \ 546 (struct cmsghdr *)NULL) 547 548 #if __BSD_VISIBLE 549 /* RFC 2292 additions */ 550 #define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l)) 551 #define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l)) 552 #endif 553 554 #ifdef _KERNEL 555 #define CMSG_ALIGN(n) _ALIGN(n) 556 #endif 557 558 /* "Socket"-level control message types: */ 559 #define SCM_RIGHTS 0x01 /* access rights (array of int) */ 560 #if __BSD_VISIBLE 561 #define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */ 562 #define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */ 563 #define SCM_BINTIME 0x04 /* timestamp (struct bintime) */ 564 #endif 565 566 #if __BSD_VISIBLE 567 /* 568 * 4.3 compat sockaddr, move to compat file later 569 */ 570 struct osockaddr { 571 unsigned short sa_family; /* address family */ 572 char sa_data[14]; /* up to 14 bytes of direct address */ 573 }; 574 575 /* 576 * 4.3-compat message header (move to compat file later). 577 */ 578 struct omsghdr { 579 char *msg_name; /* optional address */ 580 int msg_namelen; /* size of address */ 581 struct iovec *msg_iov; /* scatter/gather array */ 582 int msg_iovlen; /* # elements in msg_iov */ 583 char *msg_accrights; /* access rights sent/received */ 584 int msg_accrightslen; 585 }; 586 #endif 587 588 /* 589 * howto arguments for shutdown(2), specified by Posix.1g. 590 */ 591 #define SHUT_RD 0 /* shut down the reading side */ 592 #define SHUT_WR 1 /* shut down the writing side */ 593 #define SHUT_RDWR 2 /* shut down both sides */ 594 595 /* we cheat and use the SHUT_XX defines for these */ 596 #define PRU_FLUSH_RD SHUT_RD 597 #define PRU_FLUSH_WR SHUT_WR 598 #define PRU_FLUSH_RDWR SHUT_RDWR 599 600 601 #if __BSD_VISIBLE 602 /* 603 * sendfile(2) header/trailer struct 604 */ 605 struct sf_hdtr { 606 struct iovec *headers; /* pointer to an array of header struct iovec's */ 607 int hdr_cnt; /* number of header iovec's */ 608 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */ 609 int trl_cnt; /* number of trailer iovec's */ 610 }; 611 612 /* 613 * Sendfile-specific flag(s) 614 */ 615 #define SF_NODISKIO 0x00000001 616 #define SF_MNOWAIT 0x00000002 617 #define SF_SYNC 0x00000004 618 #endif 619 620 #ifndef _KERNEL 621 622 #include <sys/cdefs.h> 623 624 __BEGIN_DECLS 625 int accept(int, struct sockaddr * __restrict, socklen_t * __restrict); 626 int bind(int, const struct sockaddr *, socklen_t); 627 int connect(int, const struct sockaddr *, socklen_t); 628 int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict); 629 int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict); 630 int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict); 631 int listen(int, int); 632 ssize_t recv(int, void *, size_t, int); 633 ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict); 634 ssize_t recvmsg(int, struct msghdr *, int); 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 int setfib(int); 642 #endif 643 int setsockopt(int, int, int, const void *, socklen_t); 644 int shutdown(int, int); 645 int sockatmark(int); 646 int socket(int, int, int); 647 int socketpair(int, int, int, int *); 648 __END_DECLS 649 650 #endif /* !_KERNEL */ 651 652 #ifdef _KERNEL 653 struct socket; 654 655 struct tcpcb *so_sototcpcb(struct socket *so); 656 struct inpcb *so_sotoinpcb(struct socket *so); 657 struct sockbuf *so_sockbuf_snd(struct socket *); 658 struct sockbuf *so_sockbuf_rcv(struct socket *); 659 660 int so_state_get(const struct socket *); 661 void so_state_set(struct socket *, int); 662 663 int so_options_get(const struct socket *); 664 void so_options_set(struct socket *, int); 665 666 int so_error_get(const struct socket *); 667 void so_error_set(struct socket *, int); 668 669 int so_linger_get(const struct socket *); 670 void so_linger_set(struct socket *, int); 671 672 struct protosw *so_protosw_get(const struct socket *); 673 void so_protosw_set(struct socket *, struct protosw *); 674 675 void so_sorwakeup_locked(struct socket *so); 676 void so_sowwakeup_locked(struct socket *so); 677 678 void so_sorwakeup(struct socket *so); 679 void so_sowwakeup(struct socket *so); 680 681 void so_lock(struct socket *so); 682 void so_unlock(struct socket *so); 683 684 void so_listeners_apply_all(struct socket *so, void (*func)(struct socket *, void *), void *arg); 685 686 #endif 687 688 689 #endif /* !_SYS_SOCKET_H_ */ 690