1 /* $NetBSD: socket.h,v 1.108 2013/01/31 14:30:47 joerg Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)socket.h 8.6 (Berkeley) 5/3/95 61 */ 62 63 #ifndef _SYS_SOCKET_H_ 64 #define _SYS_SOCKET_H_ 65 66 #include <sys/featuretest.h> 67 68 /* 69 * Definitions related to sockets: types, address families, options. 70 */ 71 72 /* 73 * Data types. 74 */ 75 #include <sys/ansi.h> 76 77 #ifndef sa_family_t 78 typedef __sa_family_t sa_family_t; 79 #define sa_family_t __sa_family_t 80 #endif 81 82 #ifndef socklen_t 83 typedef __socklen_t socklen_t; 84 #define socklen_t __socklen_t 85 #endif 86 87 #include <machine/ansi.h> 88 89 #ifdef _BSD_SIZE_T_ 90 typedef _BSD_SIZE_T_ size_t; 91 #undef _BSD_SIZE_T_ 92 #endif 93 94 #ifdef _BSD_SSIZE_T_ 95 typedef _BSD_SSIZE_T_ ssize_t; 96 #undef _BSD_SSIZE_T_ 97 #endif 98 99 #include <sys/uio.h> 100 #include <sys/sigtypes.h> 101 102 /* 103 * Socket types. 104 */ 105 #define SOCK_STREAM 1 /* stream socket */ 106 #define SOCK_DGRAM 2 /* datagram socket */ 107 #define SOCK_RAW 3 /* raw-protocol interface */ 108 #define SOCK_RDM 4 /* reliably-delivered message */ 109 #define SOCK_SEQPACKET 5 /* sequenced packet stream */ 110 111 #define SOCK_CLOEXEC 0x10000000 /* set close on exec on socket */ 112 #define SOCK_NONBLOCK 0x20000000 /* set non blocking i/o socket */ 113 #define SOCK_NOSIGPIPE 0x40000000 /* don't send sigpipe */ 114 #define SOCK_FLAGS_MASK 0xf0000000 /* flags mask */ 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 #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */ 126 #define SO_LINGER 0x0080 /* linger on close if data present */ 127 #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */ 128 #define SO_REUSEPORT 0x0200 /* allow local address & port reuse */ 129 /* SO_OTIMESTAMP 0x0400 */ 130 #define SO_NOSIGPIPE 0x0800 /* no SIGPIPE from EPIPE */ 131 #define SO_ACCEPTFILTER 0x1000 /* there is an accept filter */ 132 #define SO_TIMESTAMP 0x2000 /* timestamp received dgram traffic */ 133 134 #if defined(__minix) && defined(_MINIX_SYSTEM) 135 /* Minixism which should go, so hide it from userland. */ 136 #define SO_PASSCRED 0x100000 137 #define SO_PEERCRED 0x200000 138 #endif /* defined(__minix) */ 139 140 141 /* 142 * Additional options, not kept in so_options. 143 */ 144 #define SO_SNDBUF 0x1001 /* send buffer size */ 145 #define SO_RCVBUF 0x1002 /* receive buffer size */ 146 #define SO_SNDLOWAT 0x1003 /* send low-water mark */ 147 #define SO_RCVLOWAT 0x1004 /* receive low-water mark */ 148 /* SO_OSNDTIMEO 0x1005 */ 149 /* SO_ORCVTIMEO 0x1006 */ 150 #define SO_ERROR 0x1007 /* get error status and clear */ 151 #define SO_TYPE 0x1008 /* get socket type */ 152 #define SO_OVERFLOWED 0x1009 /* datagrams: return packets dropped */ 153 154 #define SO_NOHEADER 0x100a /* user supplies no header to kernel; 155 * kernel removes header and supplies 156 * payload 157 */ 158 #define SO_SNDTIMEO 0x100b /* send timeout */ 159 #define SO_RCVTIMEO 0x100c /* receive timeout */ 160 /* 161 * Structure used for manipulating linger option. 162 */ 163 struct linger { 164 int l_onoff; /* option on/off */ 165 int l_linger; /* linger time in seconds */ 166 }; 167 168 struct accept_filter_arg { 169 char af_name[16]; 170 char af_arg[256-16]; 171 }; 172 173 /* 174 * Level number for (get/set)sockopt() to apply to socket itself. 175 */ 176 #define SOL_SOCKET 0xffff /* options for socket level */ 177 178 /* 179 * Address families. 180 */ 181 #define AF_UNSPEC 0 /* unspecified */ 182 #define AF_LOCAL 1 /* local to host */ 183 #define AF_UNIX AF_LOCAL /* backward compatibility */ 184 #define AF_INET 2 /* internetwork: UDP, TCP, etc. */ 185 #define AF_IMPLINK 3 /* arpanet imp addresses */ 186 #define AF_PUP 4 /* pup protocols: e.g. BSP */ 187 #define AF_CHAOS 5 /* mit CHAOS protocols */ 188 #define AF_NS 6 /* XEROX NS protocols */ 189 #define AF_ISO 7 /* ISO protocols */ 190 #define AF_OSI AF_ISO 191 #define AF_ECMA 8 /* european computer manufacturers */ 192 #define AF_DATAKIT 9 /* datakit protocols */ 193 #define AF_CCITT 10 /* CCITT protocols, X.25 etc */ 194 #define AF_SNA 11 /* IBM SNA */ 195 #define AF_DECnet 12 /* DECnet */ 196 #define AF_DLI 13 /* DEC Direct data link interface */ 197 #define AF_LAT 14 /* LAT */ 198 #define AF_HYLINK 15 /* NSC Hyperchannel */ 199 #define AF_APPLETALK 16 /* Apple Talk */ 200 #define AF_OROUTE 17 /* Internal Routing Protocol */ 201 #define AF_LINK 18 /* Link layer interface */ 202 #if defined(_NETBSD_SOURCE) 203 #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */ 204 #endif 205 #define AF_COIP 20 /* connection-oriented IP, aka ST II */ 206 #define AF_CNT 21 /* Computer Network Technology */ 207 #if defined(_NETBSD_SOURCE) 208 #define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */ 209 #endif 210 #define AF_IPX 23 /* Novell Internet Protocol */ 211 #define AF_INET6 24 /* IP version 6 */ 212 #if defined(_NETBSD_SOURCE) 213 #define pseudo_AF_PIP 25 /* Help Identify PIP packets */ 214 #endif 215 #define AF_ISDN 26 /* Integrated Services Digital Network*/ 216 #define AF_E164 AF_ISDN /* CCITT E.164 recommendation */ 217 #define AF_NATM 27 /* native ATM access */ 218 #define AF_ARP 28 /* (rev.) addr. res. prot. (RFC 826) */ 219 #if defined(_NETBSD_SOURCE) 220 #define pseudo_AF_KEY 29 /* Internal key management protocol */ 221 #define pseudo_AF_HDRCMPLT 30 /* Used by BPF to not rewrite hdrs 222 in interface output routine */ 223 #endif 224 #define AF_BLUETOOTH 31 /* Bluetooth: HCI, SCO, L2CAP, RFCOMM */ 225 #define AF_IEEE80211 32 /* IEEE80211 */ 226 #define AF_MPLS 33 /* MultiProtocol Label Switching */ 227 #define AF_ROUTE 34 /* Internal Routing Protocol */ 228 #define AF_MAX 35 229 230 /* 231 * Structure used by kernel to store most 232 * addresses. 233 */ 234 struct sockaddr { 235 __uint8_t sa_len; /* total length */ 236 sa_family_t sa_family; /* address family */ 237 char sa_data[14]; /* actually longer; address value */ 238 }; 239 240 #if defined(_KERNEL) 241 /* 242 * Structure used by kernel to pass protocol 243 * information in raw sockets. 244 */ 245 struct sockproto { 246 u_short sp_family; /* address family */ 247 u_short sp_protocol; /* protocol */ 248 }; 249 #endif /* _KERNEL */ 250 251 #if 1 252 /* 253 * RFC 2553: protocol-independent placeholder for socket addresses 254 */ 255 #define _SS_MAXSIZE 128 256 #define _SS_ALIGNSIZE (sizeof(__int64_t)) 257 #define _SS_PAD1SIZE (_SS_ALIGNSIZE - 2) 258 #define _SS_PAD2SIZE (_SS_MAXSIZE - 2 - \ 259 _SS_PAD1SIZE - _SS_ALIGNSIZE) 260 261 #if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE) 262 struct sockaddr_storage { 263 __uint8_t ss_len; /* address length */ 264 sa_family_t ss_family; /* address family */ 265 char __ss_pad1[_SS_PAD1SIZE]; 266 __int64_t __ss_align;/* force desired structure storage alignment */ 267 char __ss_pad2[_SS_PAD2SIZE]; 268 }; 269 #define sstosa(__ss) ((struct sockaddr *)(__ss)) 270 #define sstocsa(__ss) ((const struct sockaddr *)(__ss)) 271 #endif /* _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */ 272 #endif /* 1 */ 273 274 /* 275 * Protocol families, same as address families for now. 276 */ 277 #define PF_UNSPEC AF_UNSPEC 278 #define PF_LOCAL AF_LOCAL 279 #define PF_UNIX PF_LOCAL /* backward compatibility */ 280 #define PF_INET AF_INET 281 #define PF_IMPLINK AF_IMPLINK 282 #define PF_PUP AF_PUP 283 #define PF_CHAOS AF_CHAOS 284 #define PF_NS AF_NS 285 #define PF_ISO AF_ISO 286 #define PF_OSI AF_ISO 287 #define PF_ECMA AF_ECMA 288 #define PF_DATAKIT AF_DATAKIT 289 #define PF_CCITT AF_CCITT 290 #define PF_SNA AF_SNA 291 #define PF_DECnet AF_DECnet 292 #define PF_DLI AF_DLI 293 #define PF_LAT AF_LAT 294 #define PF_HYLINK AF_HYLINK 295 #define PF_APPLETALK AF_APPLETALK 296 #define PF_OROUTE AF_OROUTE 297 #define PF_LINK AF_LINK 298 #if defined(_NETBSD_SOURCE) 299 #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */ 300 #endif 301 #define PF_COIP AF_COIP 302 #define PF_CNT AF_CNT 303 #define PF_INET6 AF_INET6 304 #define PF_IPX AF_IPX /* same format as AF_NS */ 305 #if defined(_NETBSD_SOURCE) 306 #define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */ 307 #define PF_PIP pseudo_AF_PIP 308 #endif 309 #define PF_ISDN AF_ISDN /* same as E164 */ 310 #define PF_E164 AF_E164 311 #define PF_NATM AF_NATM 312 #define PF_ARP AF_ARP 313 #if defined(_NETBSD_SOURCE) 314 #define PF_KEY pseudo_AF_KEY /* like PF_ROUTE, only for key mgmt */ 315 #endif 316 #define PF_BLUETOOTH AF_BLUETOOTH 317 #define PF_MPLS AF_MPLS 318 #define PF_ROUTE AF_ROUTE 319 320 #define PF_MAX AF_MAX 321 322 #if defined(_NETBSD_SOURCE) 323 324 #ifndef gid_t 325 typedef __gid_t gid_t; /* group id */ 326 #define gid_t __gid_t 327 #endif 328 329 #ifndef uid_t 330 typedef __uid_t uid_t; /* user id */ 331 #define uid_t __uid_t 332 #endif 333 334 /* 335 * Socket credentials. 336 */ 337 struct sockcred { 338 uid_t sc_uid; /* real user id */ 339 uid_t sc_euid; /* effective user id */ 340 gid_t sc_gid; /* real group id */ 341 gid_t sc_egid; /* effective group id */ 342 int sc_ngroups; /* number of supplemental groups */ 343 gid_t sc_groups[1]; /* variable length */ 344 }; 345 346 /* 347 * Compute size of a sockcred structure with groups. 348 */ 349 #define SOCKCREDSIZE(ngrps) \ 350 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1))) 351 #endif /* _NETBSD_SOURCE */ 352 353 354 #if defined(_NETBSD_SOURCE) 355 /* 356 * Definitions for network related sysctl, CTL_NET. 357 * 358 * Second level is protocol family. 359 * Third level is protocol number. 360 * 361 * Further levels are defined by the individual families below. 362 */ 363 #define NET_MAXID AF_MAX 364 365 #define CTL_NET_NAMES { \ 366 { 0, 0 }, \ 367 { "local", CTLTYPE_NODE }, \ 368 { "inet", CTLTYPE_NODE }, \ 369 { "implink", CTLTYPE_NODE }, \ 370 { "pup", CTLTYPE_NODE }, \ 371 { "chaos", CTLTYPE_NODE }, \ 372 { "xerox_ns", CTLTYPE_NODE }, \ 373 { "iso", CTLTYPE_NODE }, \ 374 { "emca", CTLTYPE_NODE }, \ 375 { "datakit", CTLTYPE_NODE }, \ 376 { "ccitt", CTLTYPE_NODE }, \ 377 { "ibm_sna", CTLTYPE_NODE }, \ 378 { "decnet", CTLTYPE_NODE }, \ 379 { "dec_dli", CTLTYPE_NODE }, \ 380 { "lat", CTLTYPE_NODE }, \ 381 { "hylink", CTLTYPE_NODE }, \ 382 { "appletalk", CTLTYPE_NODE }, \ 383 { "oroute", CTLTYPE_NODE }, \ 384 { "link_layer", CTLTYPE_NODE }, \ 385 { "xtp", CTLTYPE_NODE }, \ 386 { "coip", CTLTYPE_NODE }, \ 387 { "cnt", CTLTYPE_NODE }, \ 388 { "rtip", CTLTYPE_NODE }, \ 389 { "ipx", CTLTYPE_NODE }, \ 390 { "inet6", CTLTYPE_NODE }, \ 391 { "pip", CTLTYPE_NODE }, \ 392 { "isdn", CTLTYPE_NODE }, \ 393 { "natm", CTLTYPE_NODE }, \ 394 { "arp", CTLTYPE_NODE }, \ 395 { "key", CTLTYPE_NODE }, \ 396 { "ieee80211", CTLTYPE_NODE }, \ 397 { "mlps", CTLTYPE_NODE }, \ 398 { "route", CTLTYPE_NODE }, \ 399 } 400 401 struct kinfo_pcb { 402 __uint64_t ki_pcbaddr; /* PTR: pcb addr */ 403 __uint64_t ki_ppcbaddr; /* PTR: ppcb addr */ 404 __uint64_t ki_sockaddr; /* PTR: socket addr */ 405 406 __uint32_t ki_family; /* INT: protocol family */ 407 __uint32_t ki_type; /* INT: socket type */ 408 __uint32_t ki_protocol; /* INT: protocol */ 409 __uint32_t ki_pflags; /* INT: generic protocol flags */ 410 411 __uint32_t ki_sostate; /* INT: socket state */ 412 __uint32_t ki_prstate; /* INT: protocol state */ 413 __int32_t ki_tstate; /* INT: tcp state */ 414 __uint32_t ki_tflags; /* INT: tcp flags */ 415 416 __uint64_t ki_rcvq; /* U_LONG: receive queue len */ 417 __uint64_t ki_sndq; /* U_LONG: send queue len */ 418 419 union { 420 struct sockaddr _kis_src; /* STRUCT: local address */ 421 char _kis_pad[256 + 8]; /* pad to max addr length */ 422 } ki_s; 423 union { 424 struct sockaddr _kid_dst; /* STRUCT: remote address */ 425 char _kid_pad[256 + 8]; /* pad to max addr length */ 426 } ki_d; 427 428 __uint64_t ki_inode; /* INO_T: fake inode number */ 429 __uint64_t ki_vnode; /* PTR: if associated with file */ 430 __uint64_t ki_conn; /* PTR: control block of peer */ 431 __uint64_t ki_refs; /* PTR: referencing socket */ 432 __uint64_t ki_nextref; /* PTR: link in refs list */ 433 }; 434 435 #define ki_src ki_s._kis_src 436 #define ki_dst ki_d._kid_dst 437 438 #define PCB_SLOP 20 439 #define PCB_ALL 0 440 441 #endif /* _NETBSD_SOURCE */ 442 443 #if defined(_NETBSD_SOURCE) 444 /* 445 * PF_ROUTE - Routing table 446 * 447 * Three additional levels are defined: 448 * Fourth: address family, 0 is wildcard 449 * Fifth: type of info, defined below 450 * Sixth: flag(s) to mask with for NET_RT_FLAGS 451 */ 452 #define NET_RT_DUMP 1 /* dump; may limit to a.f. */ 453 #define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */ 454 #define NET_RT_OOIFLIST 3 /* old NET_RT_IFLIST (pre 1.5) */ 455 #define NET_RT_OIFLIST 4 /* survey interface list */ 456 #define NET_RT_IFLIST 5 457 #define NET_RT_MAXID 6 458 459 #define CTL_NET_RT_NAMES { \ 460 { 0, 0 }, \ 461 { "dump", CTLTYPE_STRUCT }, \ 462 { "flags", CTLTYPE_STRUCT }, \ 463 { 0, 0 }, \ 464 { 0, 0 }, \ 465 { "iflist", CTLTYPE_STRUCT }, \ 466 } 467 #endif /* _NETBSD_SOURCE */ 468 469 /* 470 * Maximum queue length specifiable by listen(2). 471 */ 472 #ifndef SOMAXCONN 473 #define SOMAXCONN 128 474 #endif 475 476 /* 477 * Message header for recvmsg and sendmsg calls. 478 * Used value-result for recvmsg, value only for sendmsg. 479 */ 480 struct msghdr { 481 void *msg_name; /* optional address */ 482 socklen_t msg_namelen; /* size of address */ 483 struct iovec *msg_iov; /* scatter/gather array */ 484 int msg_iovlen; /* # elements in msg_iov */ 485 void *msg_control; /* ancillary data, see below */ 486 socklen_t msg_controllen; /* ancillary data buffer len */ 487 int msg_flags; /* flags on received message */ 488 }; 489 490 #define MSG_OOB 0x0001 /* process out-of-band data */ 491 #define MSG_PEEK 0x0002 /* peek at incoming message */ 492 #define MSG_DONTROUTE 0x0004 /* send without using routing tables */ 493 #define MSG_EOR 0x0008 /* data completes record */ 494 #define MSG_TRUNC 0x0010 /* data discarded before delivery */ 495 #define MSG_CTRUNC 0x0020 /* control data lost before delivery */ 496 #define MSG_WAITALL 0x0040 /* wait for full request or error */ 497 #define MSG_DONTWAIT 0x0080 /* this message should be nonblocking */ 498 #define MSG_BCAST 0x0100 /* this message was rcvd using link-level brdcst */ 499 #define MSG_MCAST 0x0200 /* this message was rcvd using link-level mcast */ 500 #ifndef __minix 501 #define MSG_NOSIGNAL 0x0400 /* do not generate SIGPIPE on EOF */ 502 #endif 503 #if defined(_NETBSD_SOURCE) 504 #define MSG_CMSG_CLOEXEC 0x0800 /* close on exec receiving fd */ 505 #define MSG_NBIO 0x1000 /* use non-blocking I/O */ 506 #define MSG_WAITFORONE 0x2000 /* recvmmsg() wait for one message */ 507 508 struct mmsghdr { 509 struct msghdr msg_hdr; 510 unsigned int msg_len; 511 }; 512 #endif 513 514 /* Extra flags used internally only */ 515 #define MSG_USERFLAGS 0x0ffffff 516 #define MSG_NAMEMBUF 0x1000000 /* msg_name is an mbuf */ 517 #define MSG_CONTROLMBUF 0x2000000 /* msg_control is an mbuf */ 518 #define MSG_IOVUSRSPACE 0x4000000 /* msg_iov is in user space */ 519 #define MSG_LENUSRSPACE 0x8000000 /* address length is in user space */ 520 521 /* 522 * Header for ancillary data objects in msg_control buffer. 523 * Used for additional information with/about a datagram 524 * not expressible by flags. The format is a sequence 525 * of message elements headed by cmsghdr structures. 526 */ 527 struct cmsghdr { 528 socklen_t cmsg_len; /* data byte count, including hdr */ 529 int cmsg_level; /* originating protocol */ 530 int cmsg_type; /* protocol-specific type */ 531 /* followed by u_char cmsg_data[]; */ 532 }; 533 534 /* given pointer to struct cmsghdr, return pointer to data */ 535 #define CMSG_DATA(cmsg) \ 536 ((u_char *)(void *)(cmsg) + __CMSG_ALIGN(sizeof(struct cmsghdr))) 537 #define CCMSG_DATA(cmsg) \ 538 ((const u_char *)(const void *)(cmsg) + \ 539 __CMSG_ALIGN(sizeof(struct cmsghdr))) 540 541 /* 542 * Alignment requirement for CMSG struct manipulation. 543 * This basically behaves the same as ALIGN() ARCH/include/param.h. 544 * We declare it separately for two reasons: 545 * (1) avoid dependency between machine/param.h, and (2) to sync with kernel's 546 * idea of ALIGNBYTES at runtime. 547 * without (2), we can't guarantee binary compatibility in case of future 548 * changes in ALIGNBYTES. 549 */ 550 #define __CMSG_ALIGN(n) (((n) + __ALIGNBYTES) & ~__ALIGNBYTES) 551 #ifdef _KERNEL 552 #define CMSG_ALIGN(n) __CMSG_ALIGN(n) 553 #endif 554 555 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */ 556 #define CMSG_NXTHDR(mhdr, cmsg) \ 557 (((char *)(cmsg) + __CMSG_ALIGN((cmsg)->cmsg_len) + \ 558 __CMSG_ALIGN(sizeof(struct cmsghdr)) > \ 559 (((char *)(mhdr)->msg_control) + (mhdr)->msg_controllen)) ? \ 560 (struct cmsghdr *)0 : \ 561 (struct cmsghdr *)(void *)((char *)(cmsg) + \ 562 __CMSG_ALIGN((cmsg)->cmsg_len))) 563 564 /* 565 * RFC 2292 requires to check msg_controllen, in case that the kernel returns 566 * an empty list for some reasons. 567 */ 568 #define CMSG_FIRSTHDR(mhdr) \ 569 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ 570 (struct cmsghdr *)(mhdr)->msg_control : \ 571 (struct cmsghdr *)0) 572 573 #define CMSG_SPACE(l) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + __CMSG_ALIGN(l)) 574 #define CMSG_LEN(l) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + (l)) 575 576 /* "Socket"-level control message types: */ 577 #define SCM_RIGHTS 0x01 /* access rights (array of int) */ 578 #if defined(_NETBSD_SOURCE) 579 /* 0x02 timestamp (struct timeval50) */ 580 #define SCM_CREDS 0x04 /* credentials (struct sockcred) */ 581 #define SCM_TIMESTAMP 0x08 /* timestamp (struct timeval) */ 582 #endif 583 584 /* 585 * Types of socket shutdown(2). 586 */ 587 #define SHUT_RD 0 /* Disallow further receives. */ 588 #define SHUT_WR 1 /* Disallow further sends. */ 589 #define SHUT_RDWR 2 /* Disallow further sends/receives. */ 590 591 #include <sys/cdefs.h> 592 593 #ifdef _KERNEL 594 static inline socklen_t 595 sockaddr_getlen(const struct sockaddr *sa) 596 { 597 return sa->sa_len; 598 } 599 600 __BEGIN_DECLS 601 struct sockaddr *sockaddr_copy(struct sockaddr *, socklen_t, 602 const struct sockaddr *); 603 struct sockaddr *sockaddr_externalize(struct sockaddr *, socklen_t, 604 const struct sockaddr *); 605 struct sockaddr *sockaddr_alloc(sa_family_t, socklen_t, int); 606 const void *sockaddr_const_addr(const struct sockaddr *, socklen_t *); 607 void *sockaddr_addr(struct sockaddr *, socklen_t *); 608 const struct sockaddr *sockaddr_any(const struct sockaddr *); 609 const struct sockaddr *sockaddr_any_by_family(int); 610 const void *sockaddr_anyaddr(const struct sockaddr *, socklen_t *); 611 int sockaddr_cmp(const struct sockaddr *, const struct sockaddr *); 612 struct sockaddr *sockaddr_dup(const struct sockaddr *, int); 613 void sockaddr_format(const struct sockaddr *, char *, size_t); 614 void sockaddr_free(struct sockaddr *); 615 __END_DECLS 616 #endif /* _KERNEL */ 617 618 #ifndef _KERNEL 619 620 __BEGIN_DECLS 621 int accept(int, struct sockaddr * __restrict, socklen_t * __restrict); 622 int bind(int, const struct sockaddr *, socklen_t); 623 int connect(int, const struct sockaddr *, socklen_t); 624 int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict); 625 int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict); 626 int getsockopt(int, int, int, void *__restrict, socklen_t * __restrict); 627 int listen(int, int); 628 int paccept(int, struct sockaddr * __restrict, socklen_t * __restrict, 629 const sigset_t * __restrict, int); 630 ssize_t recv(int, void *, size_t, int); 631 ssize_t recvfrom(int, void *__restrict, size_t, int, 632 struct sockaddr * __restrict, socklen_t * __restrict); 633 ssize_t recvmsg(int, struct msghdr *, int); 634 ssize_t send(int, const void *, size_t, int); 635 ssize_t sendto(int, const void *, 636 size_t, int, const struct sockaddr *, socklen_t); 637 ssize_t sendmsg(int, const struct msghdr *, int); 638 int setsockopt(int, int, int, const void *, socklen_t); 639 int shutdown(int, int); 640 int sockatmark(int); 641 int socket(int, int, int) 642 #if !defined(__LIBC12_SOURCE__) && !defined(_STANDALONE) 643 __RENAME(__socket30) 644 #endif 645 ; 646 int socketpair(int, int, int, int *); 647 648 #if defined(_NETBSD_SOURCE) 649 int sendmmsg(int, struct mmsghdr *, unsigned int, unsigned int); 650 struct timespec; 651 int recvmmsg(int, struct mmsghdr *, unsigned int, unsigned int, 652 struct timespec *); 653 #endif 654 __END_DECLS 655 #endif /* !_KERNEL */ 656 657 #endif /* !_SYS_SOCKET_H_ */ 658