sys/sys/socket.h

   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  * 3. 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: src/sys/sys/socket.h,v 1.39.2.7 2001/07/03 11:02:01 ume Exp $
  31  */
  32
  33 #ifndef _SYS_SOCKET_H_
  34 #define _SYS_SOCKET_H_
  35
  36 #ifndef _SYS_CDEFS_H_
  37 #include <sys/cdefs.h>
  38 #endif
  39
  40 #include <sys/_iovec.h>
  41
  42 #ifndef _SYS_TYPES_H_
  43 #include <sys/types.h>
  44 #endif
  45 #include <machine/stdint.h>
  46
  47 /*
  48  * Definitions related to sockets: types, address families, options.
  49  */
  50
  51 /*
  52  * Data types.
  53  */
  54 #ifndef _SA_FAMILY_T_DECLARED
  55 typedef __uint8_t       sa_family_t;
  56 #define _SA_FAMILY_T_DECLARED
  57 #endif
  58
  59 #ifndef _SOCKLEN_T_DECLARED
  60 #define _SOCKLEN_T_DECLARED
  61 typedef __socklen_t     socklen_t;
  62 #endif
  63
  64
  65 /*
  66  * Types
  67  */
  68 #define SOCK_STREAM     1               /* stream socket */
  69 #define SOCK_DGRAM      2               /* datagram socket */
  70 #define SOCK_RAW        3               /* raw-protocol interface */
  71 #define SOCK_RDM        4               /* reliably-delivered message */
  72 #define SOCK_SEQPACKET  5               /* sequenced packet stream */
  73
  74 /*
  75  * Creation flags, OR'ed into socket() and socketpair() type argument.
  76  */
  77 #define SOCK_CLOEXEC    0x10000000
  78 #define SOCK_NONBLOCK   0x20000000
  79 #ifdef _KERNEL
  80 /*
  81  * For kern_accept(): don't inherit FNONBLOCK or FASYNC.
  82  */
  83 #define SOCK_KERN_NOINHERIT 0x00100000
  84 #endif
  85
  86 /*
  87  * Option flags per-socket.
  88  */
  89 #define SO_DEBUG        0x0001          /* turn on debugging info recording */
  90 #define SO_ACCEPTCONN   0x0002          /* socket has had listen() */
  91 #define SO_REUSEADDR    0x0004          /* allow local address reuse */
  92 #define SO_KEEPALIVE    0x0008          /* keep connections alive */
  93 #define SO_DONTROUTE    0x0010          /* just use interface addresses */
  94 #define SO_BROADCAST    0x0020          /* permit sending of broadcast msgs */
  95 #define SO_USELOOPBACK  0x0040          /* bypass hardware when possible */
  96 #define SO_LINGER       0x0080          /* linger on close if data present */
  97 #define SO_OOBINLINE    0x0100          /* leave received OOB data in line */
  98 #define SO_REUSEPORT    0x0200          /* allow local address & port reuse */
  99 #define SO_TIMESTAMP    0x0400          /* timestamp received dgram traffic */
 100 #define SO_NOSIGPIPE    0x0800          /* no SIGPIPE from EPIPE */
 101 #define SO_ACCEPTFILTER 0x1000          /* there is an accept filter */
 102
 103 /*
 104  * Additional options, not kept in so_options.
 105  */
 106 #define SO_SNDBUF       0x1001          /* send buffer size */
 107 #define SO_RCVBUF       0x1002          /* receive buffer size */
 108 #define SO_SNDLOWAT     0x1003          /* send low-water mark */
 109 #define SO_RCVLOWAT     0x1004          /* receive low-water mark */
 110 #define SO_SNDTIMEO     0x1005          /* send timeout */
 111 #define SO_RCVTIMEO     0x1006          /* receive timeout */
 112 #define SO_ERROR        0x1007          /* get error status and clear */
 113 #define SO_TYPE         0x1008          /* get socket type */
 114 /* 0x1009 reserved for FreeBSD compat */
 115 #define SO_SNDSPACE     0x100a          /* get appr. send buffer free space */
 116 /* 0x1010 ~ 0x102f reserved for FreeBSD compat */
 117 #define SO_CPUHINT      0x1030          /* get socket's owner cpuid hint */
 118
 119 /*
 120  * Structure used for manipulating linger option.
 121  */
 122 struct  linger {
 123         int     l_onoff;                /* option on/off */
 124         int     l_linger;               /* linger time */
 125 };
 126
 127 struct  accept_filter_arg {
 128         char    af_name[16];
 129         char    af_arg[256-16];
 130 };
 131
 132 /*
 133  * Level number for (get/set)sockopt() to apply to socket itself.
 134  */
 135 #define SOL_SOCKET      0xffff          /* options for socket level */
 136
 137 /*
 138  * Address families.
 139  */
 140 #define AF_UNSPEC       0               /* unspecified */
 141 #define AF_LOCAL        1               /* local to host (pipes, portals) */
 142 #define AF_UNIX         AF_LOCAL        /* backward compatibility */
 143 #define AF_INET         2               /* internetwork: UDP, TCP, etc. */
 144 #define AF_IMPLINK      3               /* arpanet imp addresses */
 145 #define AF_PUP          4               /* pup protocols: e.g. BSP */
 146 #define AF_CHAOS        5               /* mit CHAOS protocols */
 147 #define AF_NETBIOS      6               /* SMB protocols */
 148 #define AF_ISO          7               /* ISO protocols */
 149 #define AF_OSI          AF_ISO
 150 #define AF_ECMA         8               /* European computer manufacturers */
 151 #define AF_DATAKIT      9               /* datakit protocols */
 152 #define AF_CCITT        10              /* CCITT protocols, X.25 etc */
 153 #define AF_SNA          11              /* IBM SNA */
 154 #define AF_DECnet       12              /* DECnet */
 155 #define AF_DLI          13              /* DEC Direct data link interface */
 156 #define AF_LAT          14              /* LAT */
 157 #define AF_HYLINK       15              /* NSC Hyperchannel */
 158 #define AF_APPLETALK    16              /* Apple Talk */
 159 #define AF_ROUTE        17              /* Internal Routing Protocol */
 160 #define AF_LINK         18              /* Link layer interface */
 161 #define pseudo_AF_XTP   19              /* eXpress Transfer Protocol (no AF) */
 162 #define AF_COIP         20              /* connection-oriented IP, aka ST II */
 163 #define AF_CNT          21              /* Computer Network Technology */
 164 #define pseudo_AF_RTIP  22              /* Help Identify RTIP packets */
 165 #define AF_IPX          23              /* Novell Internet Protocol */
 166 #define AF_SIP          24              /* Simple Internet Protocol */
 167 #define pseudo_AF_PIP   25              /* Help Identify PIP packets */
 168 #define AF_ISDN         26              /* Integrated Services Digital Network*/
 169 #define AF_E164         AF_ISDN         /* CCITT E.164 recommendation */
 170 #define pseudo_AF_KEY   27              /* Internal key-management function */
 171 #define AF_INET6        28              /* IPv6 */
 172 #define AF_NATM         29              /* native ATM access */
 173 #define AF_ATM          30              /* ATM */
 174 #define pseudo_AF_HDRCMPLT 31           /* Used by BPF to not rewrite headers
 175                                          * in interface output routine
 176                                          */
 177 #define AF_NETGRAPH     32              /* Netgraph sockets */
 178 #define AF_BLUETOOTH    33              /* Bluetooth */
 179 #define AF_MPLS         34              /* Multi-Protocol Label Switching */
 180 #define AF_IEEE80211    35              /* IEEE 802.11 protocol */
 181
 182 #define AF_MAX          36
 183
 184 /*
 185  * Structure used by kernel to store most
 186  * addresses.
 187  */
 188 struct sockaddr {
 189         __uint8_t       sa_len;         /* total length */
 190         sa_family_t     sa_family;      /* address family */
 191         char            sa_data[14];    /* actually longer; address value */
 192 };
 193 #define SOCK_MAXADDRLEN 255             /* longest possible addresses */
 194
 195 #ifdef _KERNEL
 196
 197 #ifndef _SYS_LIBKERN_H_
 198 #include <sys/libkern.h>                /* for bcmp() */
 199 #endif
 200
 201 static __inline boolean_t
 202 sa_equal(const struct sockaddr *a1, const struct sockaddr *a2)
 203 {
 204         return (bcmp(a1, a2, a1->sa_len) == 0);
 205 }
 206 #endif
 207
 208 /*
 209  * Structure used by kernel to pass protocol
 210  * information in raw sockets.
 211  */
 212 struct sockproto {
 213         __uint16_t      sp_family;              /* address family */
 214         __uint16_t      sp_protocol;            /* protocol */
 215 };
 216
 217 /*
 218  * RFC 2553: protocol-independent placeholder for socket addresses
 219  */
 220 #define _SS_MAXSIZE     128
 221 #define _SS_ALIGNSIZE   (sizeof(int64_t))
 222 #define _SS_PAD1SIZE    (_SS_ALIGNSIZE - sizeof(unsigned char) - sizeof(sa_family_t))
 223 #define _SS_PAD2SIZE    (_SS_MAXSIZE - sizeof(unsigned char) - sizeof(sa_family_t) - \
 224                                 _SS_PAD1SIZE - _SS_ALIGNSIZE)
 225
 226 struct sockaddr_storage {
 227         __uint8_t       ss_len;         /* address length */
 228         sa_family_t     ss_family;      /* address family */
 229         char            __ss_pad1[_SS_PAD1SIZE];
 230         __int64_t       __ss_align;     /* force desired structure storage alignment */
 231         char            __ss_pad2[_SS_PAD2SIZE];
 232 };
 233
 234 /*
 235  * Protocol families, same as address families for now.
 236  */
 237 #define PF_UNSPEC       AF_UNSPEC
 238 #define PF_LOCAL        AF_LOCAL
 239 #define PF_UNIX         PF_LOCAL        /* backward compatibility */
 240 #define PF_INET         AF_INET
 241 #define PF_IMPLINK      AF_IMPLINK
 242 #define PF_PUP          AF_PUP
 243 #define PF_CHAOS        AF_CHAOS
 244 #define PF_NETBIOS      AF_NETBIOS
 245 #define PF_ISO          AF_ISO
 246 #define PF_OSI          AF_ISO
 247 #define PF_ECMA         AF_ECMA
 248 #define PF_DATAKIT      AF_DATAKIT
 249 #define PF_CCITT        AF_CCITT
 250 #define PF_SNA          AF_SNA
 251 #define PF_DECnet       AF_DECnet
 252 #define PF_DLI          AF_DLI
 253 #define PF_LAT          AF_LAT
 254 #define PF_HYLINK       AF_HYLINK
 255 #define PF_APPLETALK    AF_APPLETALK
 256 #define PF_ROUTE        AF_ROUTE
 257 #define PF_LINK         AF_LINK
 258 #define PF_XTP          pseudo_AF_XTP   /* really just proto family, no AF */
 259 #define PF_COIP         AF_COIP
 260 #define PF_CNT          AF_CNT
 261 #define PF_SIP          AF_SIP
 262 #define PF_IPX          AF_IPX          /* same format as AF_NS */
 263 #define PF_RTIP         pseudo_AF_RTIP  /* same format as AF_INET */
 264 #define PF_PIP          pseudo_AF_PIP
 265 #define PF_ISDN         AF_ISDN
 266 #define PF_KEY          pseudo_AF_KEY
 267 #define PF_INET6        AF_INET6
 268 #define PF_NATM         AF_NATM
 269 #define PF_ATM          AF_ATM
 270 #define PF_NETGRAPH     AF_NETGRAPH
 271 #define PF_BLUETOOTH    AF_BLUETOOTH
 272
 273 #define PF_MAX          AF_MAX
 274
 275 /*
 276  * Definitions for network related sysctl, CTL_NET.
 277  *
 278  * Second level is protocol family.
 279  * Third level is protocol number.
 280  *
 281  * Further levels are defined by the individual families below.
 282  */
 283 #define NET_MAXID       AF_MAX
 284
 285 #define CTL_NET_NAMES { \
 286         { 0, 0 }, \
 287         { "unix", CTLTYPE_NODE }, \
 288         { "inet", CTLTYPE_NODE }, \
 289         { "implink", CTLTYPE_NODE }, \
 290         { "pup", CTLTYPE_NODE }, \
 291         { "chaos", CTLTYPE_NODE }, \
 292         { "xerox_ns", CTLTYPE_NODE }, \
 293         { "iso", CTLTYPE_NODE }, \
 294         { "emca", CTLTYPE_NODE }, \
 295         { "datakit", CTLTYPE_NODE }, \
 296         { "ccitt", CTLTYPE_NODE }, \
 297         { "ibm_sna", CTLTYPE_NODE }, \
 298         { "decnet", CTLTYPE_NODE }, \
 299         { "dec_dli", CTLTYPE_NODE }, \
 300         { "lat", CTLTYPE_NODE }, \
 301         { "hylink", CTLTYPE_NODE }, \
 302         { "appletalk", CTLTYPE_NODE }, \
 303         { "route", CTLTYPE_NODE }, \
 304         { "link_layer", CTLTYPE_NODE }, \
 305         { "xtp", CTLTYPE_NODE }, \
 306         { "coip", CTLTYPE_NODE }, \
 307         { "cnt", CTLTYPE_NODE }, \
 308         { "rtip", CTLTYPE_NODE }, \
 309         { "ipx", CTLTYPE_NODE }, \
 310         { "sip", CTLTYPE_NODE }, \
 311         { "pip", CTLTYPE_NODE }, \
 312         { "isdn", CTLTYPE_NODE }, \
 313         { "key", CTLTYPE_NODE }, \
 314         { "inet6", CTLTYPE_NODE }, \
 315         { "natm", CTLTYPE_NODE }, \
 316         { "atm", CTLTYPE_NODE }, \
 317         { "hdrcomplete", CTLTYPE_NODE }, \
 318         { "netgraph", CTLTYPE_NODE }, \
 319         { "bluetooth", CTLTYPE_NODE}, \
 320 }
 321
 322 /*
 323  * PF_ROUTE - Routing table
 324  *
 325  * Three additional levels are defined:
 326  *      Fourth: address family, 0 is wildcard
 327  *      Fifth: type of info, defined below
 328  *      Sixth: flag(s) to mask with for NET_RT_FLAGS
 329  */
 330 #define NET_RT_DUMP     1               /* dump; may limit to a.f. */
 331 #define NET_RT_FLAGS    2               /* by flags, e.g. RESOLVING */
 332 #define NET_RT_IFLIST   3               /* survey interface list */
 333 #define NET_RT_MAXID    4
 334
 335 #define CTL_NET_RT_NAMES { \
 336         { 0, 0 }, \
 337         { "dump", CTLTYPE_STRUCT }, \
 338         { "flags", CTLTYPE_STRUCT }, \
 339         { "iflist", CTLTYPE_STRUCT }, \
 340 }
 341
 342 /*
 343  * Maximum queue length specifiable by listen.
 344  */
 345 #define SOMAXCONN       128
 346
 347 /*
 348  * Maximum setsockopt buffer size
 349  */
 350 #define SOMAXOPT_SIZE   65536
 351
 352 /*
 353  * Message header for recvmsg and sendmsg calls.
 354  * Used value-result for recvmsg, value only for sendmsg.
 355  */
 356 struct msghdr {
 357         void            *msg_name;              /* optional address */
 358         socklen_t        msg_namelen;           /* size of address */
 359         struct iovec    *msg_iov;               /* scatter/gather array */
 360         int              msg_iovlen;            /* # elements in msg_iov */
 361         void            *msg_control;           /* ancillary data, see below */
 362         socklen_t        msg_controllen;        /* ancillary data buffer len */
 363         int              msg_flags;             /* flags on received message */
 364 };
 365
 366 #define MSG_OOB         0x00000001      /* process out-of-band data */
 367 #define MSG_PEEK        0x00000002      /* peek at incoming message */
 368 #define MSG_DONTROUTE   0x00000004      /* send without using routing tables */
 369 #define MSG_EOR         0x00000008      /* data completes record */
 370 #define MSG_TRUNC       0x00000010      /* data discarded before delivery */
 371 #define MSG_CTRUNC      0x00000020      /* control data lost before delivery */
 372 #define MSG_WAITALL     0x00000040      /* wait for full request or error */
 373 #define MSG_DONTWAIT    0x00000080      /* this message should be nonblocking */
 374 #define MSG_EOF         0x00000100      /* data completes connection */
 375 #define MSG_UNUSED09    0x00000200      /* was: notification message (SCTP) */
 376 #define MSG_NOSIGNAL    0x00000400      /* No SIGPIPE to unconnected socket stream */
 377 #define MSG_SYNC        0x00000800      /* No asynchronized pru_send */
 378 #define MSG_CMSG_CLOEXEC 0x00001000     /* make received fds close-on-exec */
 379 /* 0x2000 unused */
 380 /* 0x4000 unused */
 381 /* 0x8000 unused */
 382 /*
 383  * These override FIONBIO.  MSG_FNONBLOCKING is functionally equivalent to
 384  * MSG_DONTWAIT.
 385  */
 386 #define MSG_FBLOCKING   0x00010000      /* force blocking operation */
 387 #define MSG_FNONBLOCKING 0x00020000     /* force non-blocking operation */
 388 #define MSG_FMASK       0xFFFF0000      /* force mask */
 389
 390 /*
 391  * Header for ancillary data objects in msg_control buffer.
 392  * Used for additional information with/about a datagram
 393  * not expressible by flags.  The format is a sequence
 394  * of message elements headed by cmsghdr structures.
 395  */
 396 struct cmsghdr {
 397         socklen_t       cmsg_len;               /* data byte count, including hdr */
 398         int             cmsg_level;             /* originating protocol */
 399         int             cmsg_type;              /* protocol-specific type */
 400 /* followed by  u_char  cmsg_data[]; */
 401 };
 402
 403 /*
 404  * While we may have more groups than this, the cmsgcred struct must
 405  * be able to fit in an mbuf, and NGROUPS_MAX is too large to allow
 406  * this.
 407 */
 408 #define CMGROUP_MAX 16
 409
 410 /*
 411  * Credentials structure, used to verify the identity of a peer
 412  * process that has sent us a message. This is allocated by the
 413  * peer process but filled in by the kernel. This prevents the
 414  * peer from lying about its identity. (Note that cmcred_groups[0]
 415  * is the effective GID.)
 416  */
 417 struct cmsgcred {
 418         pid_t   cmcred_pid;             /* PID of sending process */
 419         uid_t   cmcred_uid;             /* real UID of sending process */
 420         uid_t   cmcred_euid;            /* effective UID of sending process */
 421         gid_t   cmcred_gid;             /* real GID of sending process */
 422         short   cmcred_ngroups;         /* number or groups */
 423         gid_t   cmcred_groups[CMGROUP_MAX];     /* groups */
 424 };
 425
 426 /* Alignment requirement for CMSG struct manipulation */
 427 #define _CMSG_ALIGN(n)          (((n) + 3) & ~3)
 428
 429 #ifdef _KERNEL
 430 #define CMSG_ALIGN(n)           _CMSG_ALIGN(n)
 431 #endif
 432
 433 /* given pointer to struct cmsghdr, return pointer to data */
 434 #define CMSG_DATA(cmsg)         ((unsigned char *)(cmsg) + \
 435                                  _CMSG_ALIGN(sizeof(struct cmsghdr)))
 436
 437 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
 438 #define CMSG_NXTHDR(mhdr, cmsg) \
 439         (((caddr_t)(cmsg) + _CMSG_ALIGN((cmsg)->cmsg_len) + \
 440           _CMSG_ALIGN(sizeof(struct cmsghdr)) > \
 441             (caddr_t)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \
 442             NULL : \
 443             (struct cmsghdr *)((caddr_t)(cmsg) + _CMSG_ALIGN((cmsg)->cmsg_len)))
 444
 445 /*
 446  * RFC 2292 requires to check msg_controllen, in case that the kernel returns
 447  * an empty list for some reasons.
 448  */
 449 #define CMSG_FIRSTHDR(mhdr) \
 450         ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
 451          (struct cmsghdr *)(mhdr)->msg_control : \
 452          NULL)
 453
 454 /* RFC 2292 additions */
 455
 456 #define CMSG_SPACE(l)           (_CMSG_ALIGN(sizeof(struct cmsghdr)) + _CMSG_ALIGN(l))
 457 #define CMSG_LEN(l)             (_CMSG_ALIGN(sizeof(struct cmsghdr)) + (l))
 458
 459 /* "Socket"-level control message types: */
 460 #define SCM_RIGHTS      0x01            /* access rights (array of int) */
 461 #define SCM_TIMESTAMP   0x02            /* timestamp (struct timeval) */
 462 #define SCM_CREDS       0x03            /* process creds (struct cmsgcred) */
 463
 464 /*
 465  * howto arguments for shutdown(2), specified by Posix.1g.
 466  */
 467 #define SHUT_RD         0               /* shut down the reading side */
 468 #define SHUT_WR         1               /* shut down the writing side */
 469 #define SHUT_RDWR       2               /* shut down both sides */
 470
 471 /*
 472  * sendfile(2) header/trailer struct
 473  */
 474 struct sf_hdtr {
 475         struct iovec *headers;  /* pointer to an array of header struct iovec's */
 476         int hdr_cnt;            /* number of header iovec's */
 477         struct iovec *trailers; /* pointer to an array of trailer struct iovec's */
 478         int trl_cnt;            /* number of trailer iovec's */
 479 };
 480
 481 #if !defined(_KERNEL) || defined(_KERNEL_VIRTUAL)
 482
 483 __BEGIN_DECLS
 484 int     accept(int, struct sockaddr *, socklen_t *);
 485 int     accept4(int, struct sockaddr *, socklen_t *, int);
 486 int     extaccept(int, int, struct sockaddr *, socklen_t *);
 487 int     bind(int, const struct sockaddr *, socklen_t);
 488 int     connect(int, const struct sockaddr *, socklen_t);
 489 int     extconnect(int, int, struct sockaddr *, socklen_t);
 490 int     getpeername(int, struct sockaddr *, socklen_t *);
 491 int     getsockname(int, struct sockaddr *, socklen_t *);
 492 int     getsockopt(int, int, int, void *, socklen_t *);
 493 int     listen(int, int);
 494 ssize_t recv(int, void *, size_t, int);
 495 ssize_t recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *);
 496 ssize_t recvmsg(int, struct msghdr *, int);
 497 ssize_t send(int, const void *, size_t, int);
 498 ssize_t sendto(int, const void *,
 499             size_t, int, const struct sockaddr *, socklen_t);
 500 ssize_t sendmsg(int, const struct msghdr *, int);
 501 int     sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int);
 502 int     setsockopt(int, int, int, const void *, socklen_t);
 503 int     shutdown(int, int);
 504 int     sockatmark(int);
 505 int     socket(int, int, int);
 506 int     socketpair(int, int, int, int *);
 507
 508 void    pfctlinput(int, struct sockaddr *);
 509 __END_DECLS
 510
 511 #endif  /* !_KERNEL || _KERNEL_VIRTUAL */
 512
 513 #endif /* !_SYS_SOCKET_H_ */