bsd/sys/socket.h

   1 /*
   2  * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
  29 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  30 /*
  31  * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
  32  *      The Regents of the University of California.  All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. All advertising materials mentioning features or use of this software
  43  *    must display the following acknowledgement:
  44  *      This product includes software developed by the University of
  45  *      California, Berkeley and its contributors.
  46  * 4. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)socket.h    8.4 (Berkeley) 2/21/94
  63  * $FreeBSD: src/sys/sys/socket.h,v 1.39.2.7 2001/07/03 11:02:01 ume Exp $
  64  */
  65 /*
  66  * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
  67  * support for mandatory and extensible security protections.  This notice
  68  * is included in support of clause 2.2 (b) of the Apple Public License,
  69  * Version 2.0.
  70  */
  71
  72 #ifndef _SYS_SOCKET_H_
  73 #define _SYS_SOCKET_H_
  74
  75 #include <sys/_types.h>
  76 #include <sys/cdefs.h>
  77 #include <machine/_param.h>
  78
  79 /*
  80  * Definitions related to sockets: types, address families, options.
  81  */
  82
  83 /*
  84  * Data types.
  85  */
  86 #ifndef _GID_T
  87 typedef __darwin_gid_t          gid_t;
  88 #define _GID_T
  89 #endif
  90
  91 #ifndef _OFF_T
  92 typedef __darwin_off_t          off_t;
  93 #define _OFF_T
  94 #endif
  95
  96 #ifndef _PID_T
  97 typedef __darwin_pid_t          pid_t;
  98 #define _PID_T
  99 #endif
 100
 101 #ifndef _SA_FAMILY_T
 102 #define _SA_FAMILY_T
 103 typedef __uint8_t               sa_family_t;
 104 #endif
 105
 106 #ifndef _SOCKLEN_T
 107 #define _SOCKLEN_T
 108 typedef __darwin_socklen_t      socklen_t;
 109 #endif
 110
 111 /* XXX Not explicitly defined by POSIX, but function return types are */
 112 #ifndef _SIZE_T
 113 #define _SIZE_T
 114 typedef __darwin_size_t         size_t;
 115 #endif
 116
 117 /* XXX Not explicitly defined by POSIX, but function return types are */
 118 #ifndef _SSIZE_T
 119 #define _SSIZE_T
 120 typedef __darwin_ssize_t        ssize_t;
 121 #endif
 122
 123 /*
 124  * [XSI] The iovec structure shall be defined as described in <sys/uio.h>.
 125  */
 126 #ifndef _STRUCT_IOVEC
 127 #define _STRUCT_IOVEC
 128 struct iovec {
 129         void *   iov_base;      /* [XSI] Base address of I/O memory region */
 130         size_t   iov_len;       /* [XSI] Size of region iov_base points to */
 131 };
 132 #endif
 133
 134 /*
 135  * Types
 136  */
 137 #define SOCK_STREAM     1               /* stream socket */
 138 #define SOCK_DGRAM      2               /* datagram socket */
 139 #define SOCK_RAW        3               /* raw-protocol interface */
 140 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 141 #define SOCK_RDM        4               /* reliably-delivered message */
 142 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 143 #define SOCK_SEQPACKET  5               /* sequenced packet stream */
 144
 145 /*
 146  * Option flags per-socket.
 147  */
 148 #define SO_DEBUG        0x0001          /* turn on debugging info recording */
 149 #define SO_ACCEPTCONN   0x0002          /* socket has had listen() */
 150 #define SO_REUSEADDR    0x0004          /* allow local address reuse */
 151 #define SO_KEEPALIVE    0x0008          /* keep connections alive */
 152 #define SO_DONTROUTE    0x0010          /* just use interface addresses */
 153 #define SO_BROADCAST    0x0020          /* permit sending of broadcast msgs */
 154 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 155 #define SO_USELOOPBACK  0x0040          /* bypass hardware when possible */
 156 #define SO_LINGER       0x0080          /* linger on close if data present (in ticks) */
 157 #else
 158 #define SO_LINGER       0x1080          /* linger on close if data present (in seconds) */
 159 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 160 #define SO_OOBINLINE    0x0100          /* leave received OOB data in line */
 161 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 162 #define SO_REUSEPORT    0x0200          /* allow local address & port reuse */
 163 #define SO_TIMESTAMP    0x0400          /* timestamp received dgram traffic */
 164 #ifndef __APPLE__
 165 #define SO_ACCEPTFILTER 0x1000          /* there is an accept filter */
 166 #else
 167 #define SO_DONTTRUNC    0x2000          /* APPLE: Retain unread data */
 168                                         /*  (ATOMIC proto) */
 169 #define SO_WANTMORE             0x4000          /* APPLE: Give hint when more data ready */
 170 #define SO_WANTOOBFLAG  0x8000          /* APPLE: Want OOB in MSG_FLAG on receive */
 171 #endif
 172 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 173
 174 /*
 175  * Additional options, not kept in so_options.
 176  */
 177 #define SO_SNDBUF       0x1001          /* send buffer size */
 178 #define SO_RCVBUF       0x1002          /* receive buffer size */
 179 #define SO_SNDLOWAT     0x1003          /* send low-water mark */
 180 #define SO_RCVLOWAT     0x1004          /* receive low-water mark */
 181 #define SO_SNDTIMEO     0x1005          /* send timeout */
 182 #define SO_RCVTIMEO     0x1006          /* receive timeout */
 183 #define SO_ERROR        0x1007          /* get error status and clear */
 184 #define SO_TYPE         0x1008          /* get socket type */
 185 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 186 /*efine SO_PRIVSTATE    0x1009             get/deny privileged state */
 187 #ifdef __APPLE__
 188 #define SO_NREAD        0x1020          /* APPLE: get 1st-packet byte count */
 189 #define SO_NKE          0x1021          /* APPLE: Install socket-level NKE */
 190 #define SO_NOSIGPIPE    0x1022          /* APPLE: No SIGPIPE on EPIPE */
 191 #define SO_NOADDRERR    0x1023          /* APPLE: Returns EADDRNOTAVAIL when src is not available anymore */
 192 #define SO_NWRITE       0x1024          /* APPLE: Get number of bytes currently in send socket buffer */
 193 #define SO_REUSESHAREUID        0x1025          /* APPLE: Allow reuse of port/socket by different userids */
 194 #ifdef __APPLE_API_PRIVATE
 195 #define SO_NOTIFYCONFLICT       0x1026  /* APPLE: send notification if there is a bind on a port which is already in use */
 196 #define SO_UPCALLCLOSEWAIT      0x1027  /* APPLE: block on close until an upcall returns */
 197 #endif
 198 #define SO_LINGER_SEC   0x1080          /* linger on close if data present (in seconds) */
 199 #define SO_RESTRICTIONS 0x1081  /* APPLE: deny inbound/outbound/both/flag set */
 200 #define SO_RESTRICT_DENYIN              0x00000001      /* flag for SO_RESTRICTIONS - deny inbound */
 201 #define SO_RESTRICT_DENYOUT             0x00000002      /* flag for SO_RESTRICTIONS - deny outbound */
 202 #define SO_RESTRICT_DENYSET             0x80000000      /* flag for SO_RESTRICTIONS - deny has been set */
 203 #endif
 204 #ifdef PRIVATE
 205 #define SO_EXECPATH     0x1085          /* Application Firewall Socket option */
 206 #endif
 207 #define SO_LABEL        0x1010          /* socket's MAC label */
 208 #define SO_PEERLABEL    0x1011          /* socket's peer MAC label */
 209 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 210
 211 /*
 212  * Structure used for manipulating linger option.
 213  */
 214 struct  linger {
 215         int     l_onoff;                /* option on/off */
 216         int     l_linger;               /* linger time */
 217 };
 218
 219 #ifndef __APPLE__
 220 struct  accept_filter_arg {
 221         char    af_name[16];
 222         char    af_arg[256-16];
 223 };
 224 #endif
 225
 226 /*
 227  * Level number for (get/set)sockopt() to apply to socket itself.
 228  */
 229 #define SOL_SOCKET      0xffff          /* options for socket level */
 230
 231
 232 /*
 233  * Address families.
 234  */
 235 #define AF_UNSPEC       0               /* unspecified */
 236 #define AF_UNIX         1               /* local to host (pipes) */
 237 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 238 #define AF_LOCAL        AF_UNIX         /* backward compatibility */
 239 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 240 #define AF_INET         2               /* internetwork: UDP, TCP, etc. */
 241 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 242 #define AF_IMPLINK      3               /* arpanet imp addresses */
 243 #define AF_PUP          4               /* pup protocols: e.g. BSP */
 244 #define AF_CHAOS        5               /* mit CHAOS protocols */
 245 #define AF_NS           6               /* XEROX NS protocols */
 246 #define AF_ISO          7               /* ISO protocols */
 247 #define AF_OSI          AF_ISO
 248 #define AF_ECMA         8               /* European computer manufacturers */
 249 #define AF_DATAKIT      9               /* datakit protocols */
 250 #define AF_CCITT        10              /* CCITT protocols, X.25 etc */
 251 #define AF_SNA          11              /* IBM SNA */
 252 #define AF_DECnet       12              /* DECnet */
 253 #define AF_DLI          13              /* DEC Direct data link interface */
 254 #define AF_LAT          14              /* LAT */
 255 #define AF_HYLINK       15              /* NSC Hyperchannel */
 256 #define AF_APPLETALK    16              /* Apple Talk */
 257 #define AF_ROUTE        17              /* Internal Routing Protocol */
 258 #define AF_LINK         18              /* Link layer interface */
 259 #define pseudo_AF_XTP   19              /* eXpress Transfer Protocol (no AF) */
 260 #define AF_COIP         20              /* connection-oriented IP, aka ST II */
 261 #define AF_CNT          21              /* Computer Network Technology */
 262 #define pseudo_AF_RTIP  22              /* Help Identify RTIP packets */
 263 #define AF_IPX          23              /* Novell Internet Protocol */
 264 #define AF_SIP          24              /* Simple Internet Protocol */
 265 #define pseudo_AF_PIP   25              /* Help Identify PIP packets */
 266 #ifdef __APPLE__
 267 /*define pseudo_AF_BLUE 26         Identify packets for Blue Box - Not used */
 268 #define AF_NDRV         27              /* Network Driver 'raw' access */
 269 #endif
 270 #define AF_ISDN         28              /* Integrated Services Digital Network*/
 271 #define AF_E164         AF_ISDN         /* CCITT E.164 recommendation */
 272 #define pseudo_AF_KEY   29              /* Internal key-management function */
 273 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 274 #define AF_INET6        30              /* IPv6 */
 275 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 276 #define AF_NATM         31              /* native ATM access */
 277 #ifdef __APPLE__
 278 #define AF_SYSTEM       32              /* Kernel event messages */
 279 #define AF_NETBIOS      33              /* NetBIOS */
 280 #define AF_PPP          34              /* PPP communication protocol */
 281 #else
 282 #define AF_ATM          30              /* ATM */
 283 #endif
 284 #define pseudo_AF_HDRCMPLT 35           /* Used by BPF to not rewrite headers
 285                                          * in interface output routine
 286                                          */
 287 #ifdef PRIVATE
 288 #define AF_AFP  36                      /* Used by AFP */
 289 #else
 290 #define AF_RESERVED_36  36              /* Reserved for internal usage */
 291 #endif
 292
 293 #ifndef __APPLE__
 294 #define AF_NETGRAPH     32              /* Netgraph sockets */
 295 #endif
 296 #define AF_MAX          37
 297 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 298
 299 /*
 300  * [XSI] Structure used by kernel to store most addresses.
 301  */
 302 struct sockaddr {
 303         __uint8_t       sa_len;         /* total length */
 304         sa_family_t     sa_family;      /* [XSI] address family */
 305         char            sa_data[14];    /* [XSI] addr value (actually larger) */
 306 };
 307
 308 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 309 #define SOCK_MAXADDRLEN 255             /* longest possible addresses */
 310
 311 /*
 312  * Structure used by kernel to pass protocol
 313  * information in raw sockets.
 314  */
 315 struct sockproto {
 316         __uint16_t      sp_family;              /* address family */
 317         __uint16_t      sp_protocol;            /* protocol */
 318 };
 319 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE)*/
 320
 321 /*
 322  * RFC 2553: protocol-independent placeholder for socket addresses
 323  */
 324 #define _SS_MAXSIZE     128
 325 #define _SS_ALIGNSIZE   (sizeof(__int64_t))
 326 #define _SS_PAD1SIZE    \
 327                 (_SS_ALIGNSIZE - sizeof(__uint8_t) - sizeof(sa_family_t))
 328 #define _SS_PAD2SIZE    \
 329                 (_SS_MAXSIZE - sizeof(__uint8_t) - sizeof(sa_family_t) - \
 330                                 _SS_PAD1SIZE - _SS_ALIGNSIZE)
 331
 332 /*
 333  * [XSI] sockaddr_storage
 334  */
 335 struct sockaddr_storage {
 336         __uint8_t       ss_len;         /* address length */
 337         sa_family_t     ss_family;      /* [XSI] address family */
 338         char                    __ss_pad1[_SS_PAD1SIZE];
 339         __int64_t       __ss_align;     /* force structure storage alignment */
 340         char                    __ss_pad2[_SS_PAD2SIZE];
 341 };
 342
 343 /*
 344  * Protocol families, same as address families for now.
 345  */
 346 #define PF_UNSPEC       AF_UNSPEC
 347 #define PF_LOCAL        AF_LOCAL
 348 #define PF_UNIX         PF_LOCAL        /* backward compatibility */
 349 #define PF_INET         AF_INET
 350 #define PF_IMPLINK      AF_IMPLINK
 351 #define PF_PUP          AF_PUP
 352 #define PF_CHAOS        AF_CHAOS
 353 #define PF_NS           AF_NS
 354 #define PF_ISO          AF_ISO
 355 #define PF_OSI          AF_ISO
 356 #define PF_ECMA         AF_ECMA
 357 #define PF_DATAKIT      AF_DATAKIT
 358 #define PF_CCITT        AF_CCITT
 359 #define PF_SNA          AF_SNA
 360 #define PF_DECnet       AF_DECnet
 361 #define PF_DLI          AF_DLI
 362 #define PF_LAT          AF_LAT
 363 #define PF_HYLINK       AF_HYLINK
 364 #define PF_APPLETALK    AF_APPLETALK
 365 #define PF_ROUTE        AF_ROUTE
 366 #define PF_LINK         AF_LINK
 367 #define PF_XTP          pseudo_AF_XTP   /* really just proto family, no AF */
 368 #define PF_COIP         AF_COIP
 369 #define PF_CNT          AF_CNT
 370 #define PF_SIP          AF_SIP
 371 #define PF_IPX          AF_IPX          /* same format as AF_NS */
 372 #define PF_RTIP         pseudo_AF_RTIP  /* same format as AF_INET */
 373 #define PF_PIP          pseudo_AF_PIP
 374 #ifdef __APPLE__
 375 #define PF_NDRV         AF_NDRV
 376 #endif
 377 #define PF_ISDN         AF_ISDN
 378 #define PF_KEY          pseudo_AF_KEY
 379 #define PF_INET6        AF_INET6
 380 #define PF_NATM         AF_NATM
 381 #ifdef __APPLE__
 382 #define PF_SYSTEM       AF_SYSTEM
 383 #define PF_NETBIOS      AF_NETBIOS
 384 #define PF_PPP          AF_PPP
 385 #ifdef PRIVATE
 386 #define PF_AFP          AF_AFP
 387 #else
 388 #define PF_RESERVED_36  AF_RESERVED_36
 389 #endif
 390
 391 #else
 392 #define PF_ATM          AF_ATM
 393 #define PF_NETGRAPH     AF_NETGRAPH
 394 #endif
 395
 396 #define PF_MAX          AF_MAX
 397
 398 /*
 399  * These do not have socket-layer support:
 400  */
 401 #define PF_VLAN         ((uint32_t)0x766c616e)  /* 'vlan' */
 402 #define PF_BOND         ((uint32_t)0x626f6e64)  /* 'bond' */
 403
 404 /*
 405  * Definitions for network related sysctl, CTL_NET.
 406  *
 407  * Second level is protocol family.
 408  * Third level is protocol number.
 409  *
 410  * Further levels are defined by the individual families below.
 411  */
 412 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 413 #define NET_MAXID       AF_MAX
 414 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 415
 416 #ifdef KERNEL_PRIVATE
 417 #define CTL_NET_NAMES { \
 418         { 0, 0 }, \
 419         { "local", CTLTYPE_NODE }, \
 420         { "inet", CTLTYPE_NODE }, \
 421         { "implink", CTLTYPE_NODE }, \
 422         { "pup", CTLTYPE_NODE }, \
 423         { "chaos", CTLTYPE_NODE }, \
 424         { "xerox_ns", CTLTYPE_NODE }, \
 425         { "iso", CTLTYPE_NODE }, \
 426         { "emca", CTLTYPE_NODE }, \
 427         { "datakit", CTLTYPE_NODE }, \
 428         { "ccitt", CTLTYPE_NODE }, \
 429         { "ibm_sna", CTLTYPE_NODE }, \
 430         { "decnet", CTLTYPE_NODE }, \
 431         { "dec_dli", CTLTYPE_NODE }, \
 432         { "lat", CTLTYPE_NODE }, \
 433         { "hylink", CTLTYPE_NODE }, \
 434         { "appletalk", CTLTYPE_NODE }, \
 435         { "route", CTLTYPE_NODE }, \
 436         { "link_layer", CTLTYPE_NODE }, \
 437         { "xtp", CTLTYPE_NODE }, \
 438         { "coip", CTLTYPE_NODE }, \
 439         { "cnt", CTLTYPE_NODE }, \
 440         { "rtip", CTLTYPE_NODE }, \
 441         { "ipx", CTLTYPE_NODE }, \
 442         { "sip", CTLTYPE_NODE }, \
 443         { "pip", CTLTYPE_NODE }, \
 444         { 0, 0 }, \
 445         { "ndrv", CTLTYPE_NODE }, \
 446         { "isdn", CTLTYPE_NODE }, \
 447         { "key", CTLTYPE_NODE }, \
 448         { "inet6", CTLTYPE_NODE }, \
 449         { "natm", CTLTYPE_NODE }, \
 450         { "sys", CTLTYPE_NODE }, \
 451         { "netbios", CTLTYPE_NODE }, \
 452         { "ppp", CTLTYPE_NODE }, \
 453         { "hdrcomplete", CTLTYPE_NODE }, \
 454 }
 455 #endif /* KERNEL_PRIVATE */
 456
 457 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 458 /*
 459  * PF_ROUTE - Routing table
 460  *
 461  * Three additional levels are defined:
 462  *      Fourth: address family, 0 is wildcard
 463  *      Fifth: type of info, defined below
 464  *      Sixth: flag(s) to mask with for NET_RT_FLAGS
 465  */
 466 #define NET_RT_DUMP                     1               /* dump; may limit to a.f. */
 467 #define NET_RT_FLAGS            2               /* by flags, e.g. RESOLVING */
 468 #define NET_RT_IFLIST           3               /* survey interface list */
 469 #define NET_RT_STAT                     4               /* routing statistics */
 470 #define NET_RT_TRASH            5               /* routes not in table but not freed */
 471 #define NET_RT_IFLIST2  6               /* interface list with addresses */
 472 #define NET_RT_DUMP2                     7               /* dump; may limit to a.f. */
 473 #define NET_RT_MAXID            8
 474 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 475
 476 #ifdef KERNEL_PRIVATE
 477 #define CTL_NET_RT_NAMES { \
 478         { 0, 0 }, \
 479         { "dump", CTLTYPE_STRUCT }, \
 480         { "flags", CTLTYPE_STRUCT }, \
 481         { "iflist", CTLTYPE_STRUCT }, \
 482         { "stat", CTLTYPE_STRUCT }, \
 483         { "trash", CTLTYPE_INT }, \
 484         { "iflist2", CTLTYPE_STRUCT }, \
 485         { "dump2", CTLTYPE_STRUCT }, \
 486 }
 487
 488 #endif /* KERNEL_PRIVATE */
 489
 490 /*
 491  * Maximum queue length specifiable by listen.
 492  */
 493 #define SOMAXCONN       128
 494
 495 /*
 496  * [XSI] Message header for recvmsg and sendmsg calls.
 497  * Used value-result for recvmsg, value only for sendmsg.
 498  */
 499 struct msghdr {
 500         void            *msg_name;      /* [XSI] optional address */
 501         socklen_t       msg_namelen;    /* [XSI] size of address */
 502         struct          iovec *msg_iov; /* [XSI] scatter/gather array */
 503         int             msg_iovlen;     /* [XSI] # elements in msg_iov */
 504         void            *msg_control;   /* [XSI] ancillary data, see below */
 505         socklen_t       msg_controllen; /* [XSI] ancillary data buffer len */
 506         int             msg_flags;      /* [XSI] flags on received message */
 507 };
 508
 509 #ifdef KERNEL
 510 /* LP64 version of struct msghdr.  all pointers
 511  * grow when we're dealing with a 64-bit process.
 512  * WARNING - keep in sync with struct msghdr
 513  */
 514
 515 struct user_msghdr {
 516         user_addr_t     msg_name;               /* optional address */
 517         socklen_t       msg_namelen;            /* size of address */
 518         user_addr_t     msg_iov __attribute((aligned(8)));              /* scatter/gather array */
 519         int             msg_iovlen;             /* # elements in msg_iov */
 520         user_addr_t     msg_control __attribute((aligned(8)));          /* ancillary data, see below */
 521         socklen_t       msg_controllen;         /* ancillary data buffer len */
 522         int             msg_flags;              /* flags on received message */
 523 };
 524
 525 #endif // KERNEL
 526
 527 #define MSG_OOB         0x1             /* process out-of-band data */
 528 #define MSG_PEEK        0x2             /* peek at incoming message */
 529 #define MSG_DONTROUTE   0x4             /* send without using routing tables */
 530 #define MSG_EOR         0x8             /* data completes record */
 531 #define MSG_TRUNC       0x10            /* data discarded before delivery */
 532 #define MSG_CTRUNC      0x20            /* control data lost before delivery */
 533 #define MSG_WAITALL     0x40            /* wait for full request or error */
 534 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 535 #define MSG_DONTWAIT    0x80            /* this message should be nonblocking */
 536 #define MSG_EOF         0x100           /* data completes connection */
 537 #ifdef __APPLE__
 538 #define MSG_WAITSTREAM  0x200           /* wait up to full request.. may return partial */
 539 #define MSG_FLUSH       0x400           /* Start of 'hold' seq; dump so_temp */
 540 #define MSG_HOLD        0x800           /* Hold frag in so_temp */
 541 #define MSG_SEND        0x1000          /* Send the packet in so_temp */
 542 #define MSG_HAVEMORE    0x2000          /* Data ready to be read */
 543 #define MSG_RCVMORE     0x4000          /* Data remains in current pkt */
 544 #endif
 545 #ifdef KERNEL_PRIVATE
 546 #define MSG_COMPAT      0x8000          /* deprecated */
 547 #endif /* KERNEL_PRIVATE */
 548 #define MSG_NEEDSA      0x10000         /* Fail receive if socket address cannot be allocated */
 549 #ifdef KERNEL_PRIVATE
 550 #define MSG_NBIO        0x20000         /* FIONBIO mode, used by fifofs */
 551 #endif
 552 #ifdef  KERNEL
 553 #define MSG_USEUPCALL   0x80000000 /* Inherit upcall in sock_accept */
 554 #endif
 555 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 556
 557 /*
 558  * Header for ancillary data objects in msg_control buffer.
 559  * Used for additional information with/about a datagram
 560  * not expressible by flags.  The format is a sequence
 561  * of message elements headed by cmsghdr structures.
 562  */
 563 struct cmsghdr {
 564         socklen_t       cmsg_len;       /* [XSI] data byte count, including hdr */
 565         int             cmsg_level;     /* [XSI] originating protocol */
 566         int             cmsg_type;      /* [XSI] protocol-specific type */
 567 /* followed by  unsigned char  cmsg_data[]; */
 568 };
 569
 570 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 571 #ifndef __APPLE__
 572 /*
 573  * While we may have more groups than this, the cmsgcred struct must
 574  * be able to fit in an mbuf, and NGROUPS_MAX is too large to allow
 575  * this.
 576 */
 577 #define CMGROUP_MAX 16
 578
 579 /*
 580  * Credentials structure, used to verify the identity of a peer
 581  * process that has sent us a message. This is allocated by the
 582  * peer process but filled in by the kernel. This prevents the
 583  * peer from lying about its identity. (Note that cmcred_groups[0]
 584  * is the effective GID.)
 585  */
 586 struct cmsgcred {
 587         pid_t   cmcred_pid;             /* PID of sending process */
 588         uid_t   cmcred_uid;             /* real UID of sending process */
 589         uid_t   cmcred_euid;            /* effective UID of sending process */
 590         gid_t   cmcred_gid;             /* real GID of sending process */
 591         short   cmcred_ngroups;         /* number or groups */
 592         gid_t   cmcred_groups[CMGROUP_MAX];     /* groups */
 593 };
 594 #endif
 595 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 596
 597 /* given pointer to struct cmsghdr, return pointer to data */
 598 #define CMSG_DATA(cmsg)         ((unsigned char *)(cmsg) + \
 599                                  __DARWIN_ALIGN(sizeof(struct cmsghdr)))
 600
 601 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
 602 #define CMSG_NXTHDR(mhdr, cmsg) \
 603         (((unsigned char *)(cmsg) + __DARWIN_ALIGN((__darwin_intptr_t)(cmsg)->cmsg_len) + \
 604           __DARWIN_ALIGN(sizeof(struct cmsghdr)) > \
 605             (unsigned char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \
 606             (struct cmsghdr *)0L /* NULL */ : \
 607             (struct cmsghdr *)((unsigned char *)(cmsg) + __DARWIN_ALIGN((__darwin_intptr_t)(cmsg)->cmsg_len)))
 608
 609 #define CMSG_FIRSTHDR(mhdr)     ((struct cmsghdr *)(mhdr)->msg_control)
 610
 611 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 612 /* RFC 2292 additions */
 613 #define CMSG_SPACE(l)           (__DARWIN_ALIGN(sizeof(struct cmsghdr)) + __DARWIN_ALIGN(l))
 614 #define CMSG_LEN(l)             (__DARWIN_ALIGN(sizeof(struct cmsghdr)) + (l))
 615
 616 #ifdef KERNEL
 617 #define CMSG_ALIGN(n)   __DARWIN_ALIGN(n)
 618 #endif
 619 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 620
 621 /* "Socket"-level control message types: */
 622 #define SCM_RIGHTS      0x01            /* access rights (array of int) */
 623 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 624 #define SCM_TIMESTAMP   0x02            /* timestamp (struct timeval) */
 625 #define SCM_CREDS       0x03            /* process creds (struct cmsgcred) */
 626
 627 #ifdef KERNEL_PRIVATE
 628 /*
 629  * 4.3 compat sockaddr (deprecated)
 630  */
 631 struct osockaddr {
 632         __uint16_t      sa_family;      /* address family */
 633         char    sa_data[14];            /* up to 14 bytes of direct address */
 634 };
 635
 636 /*
 637  * 4.3-compat message header (deprecated)
 638  */
 639 struct omsghdr {
 640         void            *msg_name;              /* optional address */
 641         socklen_t       msg_namelen;            /* size of address */
 642         struct  iovec   *msg_iov;               /* scatter/gather array */
 643         int             msg_iovlen;             /* # elements in msg_iov */
 644         void            *msg_accrights;         /* access rights sent/rcvd */
 645         int             msg_accrightslen;
 646 };
 647 #endif /* KERNEL_PRIVATE */
 648 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 649
 650 /*
 651  * howto arguments for shutdown(2), specified by Posix.1g.
 652  */
 653 #define SHUT_RD         0               /* shut down the reading side */
 654 #define SHUT_WR         1               /* shut down the writing side */
 655 #define SHUT_RDWR       2               /* shut down both sides */
 656
 657 #if !defined(_POSIX_C_SOURCE)
 658 /*
 659  * sendfile(2) header/trailer struct
 660  */
 661 struct sf_hdtr {
 662         struct iovec *headers;  /* pointer to an array of header struct iovec's */
 663         int hdr_cnt;            /* number of header iovec's */
 664         struct iovec *trailers; /* pointer to an array of trailer struct iovec's */
 665         int trl_cnt;            /* number of trailer iovec's */
 666 };
 667
 668 #ifdef KERNEL
 669
 670 struct user_sf_hdtr {
 671         user_addr_t headers __attribute((aligned(8)));  /* pointer to an array of header struct iovec's */
 672         int hdr_cnt;            /* number of header iovec's */
 673         user_addr_t trailers __attribute((aligned(8))); /* pointer to an array of trailer struct iovec's */
 674         int trl_cnt;            /* number of trailer iovec's */
 675 };
 676
 677
 678 #endif /* KERNEL */
 679
 680 #endif  /* !_POSIX_C_SOURCE */
 681
 682 #ifndef KERNEL
 683 __BEGIN_DECLS
 684 int     accept(int, struct sockaddr * __restrict, socklen_t * __restrict)
 685                 __DARWIN_ALIAS_C(accept);
 686 int     bind(int, const struct sockaddr *, socklen_t) __DARWIN_ALIAS(bind);
 687 int     connect(int, const struct sockaddr *, socklen_t) __DARWIN_ALIAS_C( connect);
 688 int     getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict)
 689                 __DARWIN_ALIAS(getpeername);
 690 int     getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict)
 691                 __DARWIN_ALIAS(getsockname);
 692 int     getsockopt(int, int, int, void * __restrict, socklen_t * __restrict);
 693 int     listen(int, int) __DARWIN_ALIAS(listen);
 694 ssize_t recv(int, void *, size_t, int) __DARWIN_ALIAS_C(recv);
 695 ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict,
 696                 socklen_t * __restrict) __DARWIN_ALIAS_C(recvfrom);
 697 ssize_t recvmsg(int, struct msghdr *, int) __DARWIN_ALIAS_C(recvmsg);
 698 ssize_t send(int, const void *, size_t, int) __DARWIN_ALIAS_C(send);
 699 ssize_t sendmsg(int, const struct msghdr *, int) __DARWIN_ALIAS_C(sendmsg);
 700 ssize_t sendto(int, const void *, size_t,
 701                 int, const struct sockaddr *, socklen_t) __DARWIN_ALIAS_C(sendto);
 702 int     setsockopt(int, int, int, const void *, socklen_t);
 703 int     shutdown(int, int);
 704 int     sockatmark(int);
 705 int     socket(int, int, int);
 706 int     socketpair(int, int, int, int *) __DARWIN_ALIAS(socketpair);
 707
 708 #if !defined(_POSIX_C_SOURCE)
 709 int     sendfile(int, int, off_t, off_t *, struct sf_hdtr *, int);
 710 #endif  /* !_POSIX_C_SOURCE */
 711
 712 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 713 void    pfctlinput(int, struct sockaddr *);
 714 #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 715 __END_DECLS
 716
 717 #endif /* !KERNEL */
 718
 719 #ifdef KERNEL
 720 #include <sys/kpi_socket.h>
 721 #endif
 722
 723 #endif /* !_SYS_SOCKET_H_ */