gonzui

    1: /*      $OpenBSD: socket.h,v 1.79 2012/03/17 10:16:41 dlg Exp $      */
    2: /*      $NetBSD: socket.h,v 1.14 1996/02/09 18:25:36 christos Exp $  */
    3: 
    4: /*
    5:  * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
    6:  *      The Regents of the University of California.  All rights reserved.
    7:  *
    8:  * Redistribution and use in source and binary forms, with or without
    9:  * modification, are permitted provided that the following conditions
   10:  * are met:
   11:  * 1. Redistributions of source code must retain the above copyright
   12:  *    notice, this list of conditions and the following disclaimer.
   13:  * 2. Redistributions in binary form must reproduce the above copyright
   14:  *    notice, this list of conditions and the following disclaimer in the
   15:  *    documentation and/or other materials provided with the distribution.
   16:  * 3. Neither the name of the University nor the names of its contributors
   17:  *    may be used to endorse or promote products derived from this software
   18:  *    without specific prior written permission.
   19:  *
   20:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30:  * SUCH DAMAGE.
   31:  *
   32:  *      @(#)socket.h 8.4 (Berkeley) 2/21/94
   33:  */
   34: 
   35: #ifndef _SYS_SOCKET_H_
   36: #define _SYS_SOCKET_H_
   37: 
   38: #include <sys/_types.h>
   39: 
   40: /*
   41:  * Definitions related to sockets: types, address families, options.
   42:  */
   43: 
   44: /* Maximum number of alternate routing tables */
   45: #define RT_TABLEID_MAX  255
   46: 
   47: /*
   48:  * Types
   49:  */
   50: #define SOCK_STREAM     1           /* stream socket */
   51: #define SOCK_DGRAM      2            /* datagram socket */
   52: #define SOCK_RAW        3              /* raw-protocol interface */
   53: #define SOCK_RDM        4              /* reliably-delivered message */
   54: #define SOCK_SEQPACKET  5                /* sequenced packet stream */
   55: 
   56: /*
   57:  * Option flags per-socket.
   58:  */
   59: #define SO_DEBUG        0x0001         /* turn on debugging info recording */
   60: #define SO_ACCEPTCONN   0x0002            /* socket has had listen() */
   61: #define SO_REUSEADDR    0x0004             /* allow local address reuse */
   62: #define SO_KEEPALIVE    0x0008             /* keep connections alive */
   63: #define SO_DONTROUTE    0x0010             /* just use interface addresses */
   64: #define SO_BROADCAST    0x0020             /* permit sending of broadcast msgs */
   65: #define SO_USELOOPBACK  0x0040           /* bypass hardware when possible */
   66: #define SO_LINGER       0x0080                /* linger on close if data present */
   67: #define SO_OOBINLINE    0x0100             /* leave received OOB data in line */
   68: #define SO_REUSEPORT    0x0200             /* allow local address & port reuse */
   69: #define SO_TIMESTAMP    0x0800             /* timestamp received dgram traffic */
   70: #define SO_BINDANY      0x1000               /* allow bind to any address */
   71: 
   72: /*
   73:  * Additional options, not kept in so_options.
   74:  */
   75: #define SO_SNDBUF       0x1001                /* send buffer size */
   76: #define SO_RCVBUF       0x1002                /* receive buffer size */
   77: #define SO_SNDLOWAT     0x1003              /* send low-water mark */
   78: #define SO_RCVLOWAT     0x1004              /* receive low-water mark */
   79: #define SO_SNDTIMEO     0x1005              /* send timeout */
   80: #define SO_RCVTIMEO     0x1006              /* receive timeout */
   81: #define SO_ERROR        0x1007         /* get error status and clear */
   82: #define SO_TYPE         0x1008         /* get socket type */
   83: #define SO_NETPROC      0x1020               /* multiplex; network processing */
   84: #define SO_RTABLE       0x1021                /* routing table to be used */
   85: #define SO_PEERCRED     0x1022              /* get connect-time credentials */
   86: #define SO_SPLICE       0x1023                /* splice data to other socket */
   87: 
   88: /*
   89:  * Structure used for manipulating linger option.
   90:  */
   91: struct  linger {
   92:         int    l_onoff;           /* option on/off */
   93:         int    l_linger;          /* linger time */
   94: };
   95: 
   96: #if __BSD_VISIBLE
   97: /*
   98:  * Structure used for manipulating splice option.
   99:  */
  100: struct  splice {
  101:         int    sp_fd;                     /* drain socket file descriptor */
  102:         off_t  sp_max;                  /* if set, maximum bytes to splice */
  103:         struct timeval sp_idle;        /* idle timeout */
  104: };
  105: #endif /* __BSD_VISIBLE */
  106: 
  107: /*
  108:  * Level number for (get/set)sockopt() to apply to socket itself.
  109:  */
  110: #define SOL_SOCKET      0xffff               /* options for socket level */
  111: 
  112: /*
  113:  * Address families.
  114:  */
  115: #define AF_UNSPEC       0             /* unspecified */
  116: #define AF_LOCAL        1              /* local to host (pipes, portals) */
  117: #define AF_UNIX         AF_LOCAL       /* backward compatibility */
  118: #define AF_INET         2              /* internetwork: UDP, TCP, etc. */
  119: #define AF_IMPLINK      3            /* arpanet imp addresses */
  120: #define AF_PUP          4               /* pup protocols: e.g. BSP */
  121: #define AF_CHAOS        5              /* mit CHAOS protocols */
  122: #define AF_NS           6                /* XEROX NS protocols */
  123: #define AF_ISO          7               /* ISO protocols */
  124: #define AF_OSI          AF_ISO
  125: #define AF_ECMA         8              /* european computer manufacturers */
  126: #define AF_DATAKIT      9            /* datakit protocols */
  127: #define AF_CCITT        10             /* CCITT protocols, X.25 etc */
  128: #define AF_SNA          11              /* IBM SNA */
  129: #define AF_DECnet       12            /* DECnet */
  130: #define AF_DLI          13              /* DEC Direct data link interface */
  131: #define AF_LAT          14              /* LAT */
  132: #define AF_HYLINK       15            /* NSC Hyperchannel */
  133: #define AF_APPLETALK    16         /* Apple Talk */
  134: #define AF_ROUTE        17             /* Internal Routing Protocol */
  135: #define AF_LINK         18             /* Link layer interface */
  136: #define pseudo_AF_XTP   19                /* eXpress Transfer Protocol (no AF) */
  137: #define AF_COIP         20             /* connection-oriented IP, aka ST II */
  138: #define AF_CNT          21              /* Computer Network Technology */
  139: #define pseudo_AF_RTIP  22               /* Help Identify RTIP packets */
  140: #define AF_IPX          23              /* Novell Internet Protocol */
  141: #define AF_INET6        24             /* IPv6 */
  142: #define pseudo_AF_PIP   25                /* Help Identify PIP packets */
  143: #define AF_ISDN         26             /* Integrated Services Digital Network*/
  144: #define AF_E164         AF_ISDN                /* CCITT E.164 recommendation */
  145: #define AF_NATM         27             /* native ATM access */
  146: #define AF_ENCAP        28
  147: #define AF_SIP          29              /* Simple Internet Protocol */
  148: #define AF_KEY          30
  149: #define pseudo_AF_HDRCMPLT 31           /* Used by BPF to not rewrite headers
  150:                                            in interface output routine */
  151: #define AF_BLUETOOTH    32         /* Bluetooth */
  152: #define AF_MPLS         33              /* MPLS */
  153: #define pseudo_AF_PFLOW 34              /* pflow */
  154: #define pseudo_AF_PIPEX 35              /* PIPEX */
  155: #define AF_MAX          36
  156: 
  157: /*
  158:  * Structure used by kernel to store most
  159:  * addresses.
  160:  */
  161: struct sockaddr {
  162:         u_int8_t    sa_len;            /* total length */
  163:         sa_family_t sa_family;         /* address family */
  164:         char       sa_data[14];  /* actually longer; address value */
  165: };
  166: 
  167: /*
  168:  * Sockaddr type which can hold any sockaddr type available
  169:  * in the system.
  170:  *
  171:  * Note: __ss_{len,family} is defined in RFC2553.  During RFC2553 discussion
  172:  * the field name went back and forth between ss_len and __ss_len,
  173:  * and RFC2553 specifies it to be __ss_len.  openbsd picked ss_len.
  174:  * For maximum portability, userland programmer would need to
  175:  * (1) make the code never touch ss_len portion (cast it into sockaddr and
  176:  * touch sa_len), or (2) add "-Dss_len=__ss_len" into CFLAGS to unify all
  177:  * occurrences (including header file) to __ss_len.
  178:  */
  179: struct sockaddr_storage {
  180:         u_int8_t       ss_len;               /* total length */
  181:         sa_family_t    ss_family; /* address family */
  182:         unsigned char  __ss_pad1[6];    /* align to quad */
  183:         u_int64_t      __ss_pad2;   /* force alignment for stupid compilers */
  184:         unsigned char  __ss_pad3[240];  /* pad to a total of 256 bytes */
  185: };
  186: 
  187: /*
  188:  * Structure used by kernel to pass protocol
  189:  * information in raw sockets.
  190:  */
  191: struct sockproto {
  192:         unsigned short sp_family;      /* address family */
  193:         unsigned short sp_protocol;    /* protocol */
  194: };
  195: 
  196: /*
  197:  * Protocol families, same as address families for now.
  198:  */
  199: #define PF_UNSPEC       AF_UNSPEC
  200: #define PF_LOCAL        AF_LOCAL
  201: #define PF_UNIX         PF_LOCAL       /* backward compatibility */
  202: #define PF_INET         AF_INET
  203: #define PF_IMPLINK      AF_IMPLINK
  204: #define PF_PUP          AF_PUP
  205: #define PF_CHAOS        AF_CHAOS
  206: #define PF_NS           AF_NS
  207: #define PF_ISO          AF_ISO
  208: #define PF_OSI          AF_ISO
  209: #define PF_ECMA         AF_ECMA
  210: #define PF_DATAKIT      AF_DATAKIT
  211: #define PF_CCITT        AF_CCITT
  212: #define PF_SNA          AF_SNA
  213: #define PF_DECnet       AF_DECnet
  214: #define PF_DLI          AF_DLI
  215: #define PF_LAT          AF_LAT
  216: #define PF_HYLINK       AF_HYLINK
  217: #define PF_APPLETALK    AF_APPLETALK
  218: #define PF_ROUTE        AF_ROUTE
  219: #define PF_LINK         AF_LINK
  220: #define PF_XTP          pseudo_AF_XTP   /* really just proto family, no AF */
  221: #define PF_COIP         AF_COIP
  222: #define PF_CNT          AF_CNT
  223: #define PF_IPX          AF_IPX          /* same format as AF_NS */
  224: #define PF_INET6        AF_INET6
  225: #define PF_RTIP         pseudo_AF_RTIP /* same format as AF_INET */
  226: #define PF_PIP          pseudo_AF_PIP
  227: #define PF_ISDN         AF_ISDN
  228: #define PF_NATM         AF_NATM
  229: #define PF_ENCAP        AF_ENCAP
  230: #define PF_SIP          AF_SIP
  231: #define PF_KEY          AF_KEY
  232: #define PF_BPF          pseudo_AF_HDRCMPLT
  233: #define PF_BLUETOOTH    AF_BLUETOOTH
  234: #define PF_MPLS         AF_MPLS
  235: #define PF_PFLOW        pseudo_AF_PFLOW
  236: #define PF_PIPEX        pseudo_AF_PIPEX
  237: #define PF_MAX          AF_MAX
  238: 
  239: /*
  240:  * These are the valid values for the "how" field used by shutdown(2).
  241:  */
  242: #define SHUT_RD         0
  243: #define SHUT_WR         1
  244: #define SHUT_RDWR       2
  245: 
  246: /*
  247:  * Socket credentials.
  248:  */
  249: struct sockcred {
  250:         uid_t  sc_uid;                  /* real user id */
  251:         uid_t  sc_euid;         /* effective user id */
  252:         gid_t  sc_gid;                  /* real group id */
  253:         gid_t  sc_egid;         /* effective group id */
  254:         int    sc_ngroups;                /* number of supplemental groups */
  255:         gid_t  sc_groups[1];            /* variable length */
  256: };
  257: 
  258: #if __BSD_VISIBLE
  259: /* Read using getsockopt() with SOL_SOCKET, SO_PEERCRED */
  260: struct sockpeercred {
  261:         uid_t          uid;            /* effective user id */
  262:         gid_t          gid;            /* effective group id */
  263:         pid_t          pid;
  264: };
  265: #endif /* __BSD_VISIBLE */
  266: 
  267: /*
  268:  * Compute size of a sockcred structure with groups.
  269:  */
  270: #define SOCKCREDSIZE(ngrps) \
  271:         (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))
  272: 
  273: /*
  274:  * Definitions for network related sysctl, CTL_NET.
  275:  *
  276:  * Second level is protocol family.
  277:  * Third level is protocol number.
  278:  *
  279:  * Further levels are defined by the individual families below.
  280:  */
  281: #define NET_MAXID       AF_MAX
  282: 
  283: #define CTL_NET_NAMES { \
  284:         { 0, 0 }, \
  285:         { "unix", CTLTYPE_NODE }, \
  286:         { "inet", CTLTYPE_NODE }, \
  287:         { "implink", CTLTYPE_NODE }, \
  288:         { "pup", CTLTYPE_NODE }, \
  289:         { "chaos", CTLTYPE_NODE }, \
  290:         { "xerox_ns", CTLTYPE_NODE }, \
  291:         { "iso", CTLTYPE_NODE }, \
  292:         { "emca", CTLTYPE_NODE }, \
  293:         { "datakit", CTLTYPE_NODE }, \
  294:         { "ccitt", CTLTYPE_NODE }, \
  295:         { "ibm_sna", CTLTYPE_NODE }, \
  296:         { "decnet", CTLTYPE_NODE }, \
  297:         { "dec_dli", CTLTYPE_NODE }, \
  298:         { "lat", CTLTYPE_NODE }, \
  299:         { "hylink", CTLTYPE_NODE }, \
  300:         { "appletalk", CTLTYPE_NODE }, \
  301:         { "route", CTLTYPE_NODE }, \
  302:         { "link_layer", CTLTYPE_NODE }, \
  303:         { "xtp", CTLTYPE_NODE }, \
  304:         { "coip", CTLTYPE_NODE }, \
  305:         { "cnt", CTLTYPE_NODE }, \
  306:         { "rtip", CTLTYPE_NODE }, \
  307:         { "ipx", CTLTYPE_NODE }, \
  308:         { "inet6", CTLTYPE_NODE }, \
  309:         { "pip", CTLTYPE_NODE }, \
  310:         { "isdn", CTLTYPE_NODE }, \
  311:         { "natm", CTLTYPE_NODE }, \
  312:         { "encap", CTLTYPE_NODE }, \
  313:         { "sip", CTLTYPE_NODE }, \
  314:         { "key", CTLTYPE_NODE }, \
  315:         { "bpf", CTLTYPE_NODE }, \
  316:         { "bluetooth", CTLTYPE_NODE }, \
  317:         { "mpls", CTLTYPE_NODE }, \
  318:         { "pflow", CTLTYPE_NODE }, \
  319:         { "pipex", CTLTYPE_NODE }, \
  320: }
  321: 
  322: /*
  323:  * PF_ROUTE - Routing table
  324:  *
  325:  * Four 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:  *      Seventh: routing table to use (facultative, defaults to 0)
  330:  *               NET_RT_TABLE has the table id as sixth element.
  331:  */
  332: #define NET_RT_DUMP     1           /* dump; may limit to a.f. */
  333: #define NET_RT_FLAGS    2          /* by flags, e.g. RESOLVING */
  334: #define NET_RT_IFLIST   3         /* survey interface list */
  335: #define NET_RT_STATS    4          /* routing table statistics */
  336: #define NET_RT_TABLE    5
  337: #define NET_RT_MAXID    6
  338: 
  339: #define CTL_NET_RT_NAMES { \
  340:         { 0, 0 }, \
  341:         { "dump", CTLTYPE_STRUCT }, \
  342:         { "flags", CTLTYPE_STRUCT }, \
  343:         { "iflist", CTLTYPE_STRUCT }, \
  344:         { "stats", CTLTYPE_STRUCT }, \
  345:         { "table", CTLTYPE_STRUCT }, \
  346: }
  347: 
  348: /*
  349:  * PF_KEY - Key Management
  350:  */
  351: #define NET_KEY_SADB_DUMP       1     /* return SADB */
  352: #define NET_KEY_SPD_DUMP        2      /* return SPD */
  353: #define NET_KEY_MAXID           3
  354: 
  355: #define CTL_NET_KEY_NAMES { \
  356:         { 0, 0 }, \
  357:         { "sadb_dump", CTLTYPE_STRUCT }, \
  358:         { "spd_dump", CTLTYPE_STRUCT }, \
  359: }
  360: 
  361: /*
  362:  * PF_BPF  not really a family, but connected under CTL_NET
  363:  */
  364: #define NET_BPF_BUFSIZE         1              /* default buffer size */
  365: #define NET_BPF_MAXBUFSIZE      2            /* maximum buffer size */
  366: #define NET_BPF_MAXID           3
  367: 
  368: #define CTL_NET_BPF_NAMES { \
  369:         { 0, 0 }, \
  370:         { "bufsize", CTLTYPE_INT }, \
  371:         { "maxbufsize", CTLTYPE_INT }, \
  372: }
  373: 
  374: /*
  375:  * PF_PFLOW not really a family, but connected under CTL_NET
  376:  */
  377: #define NET_PFLOW_STATS         1              /* statistics */
  378: #define NET_PFLOW_MAXID         2
  379: 
  380: #define CTL_NET_PFLOW_NAMES { \
  381:         { 0, 0 }, \
  382:         { "stats", CTLTYPE_STRUCT }, \
  383: }
  384: 
  385: /*
  386:  * Maximum queue length specifiable by listen(2).
  387:  */
  388: #define SOMAXCONN       128
  389: 
  390: /*
  391:  * Message header for recvmsg and sendmsg calls.
  392:  * Used value-result for recvmsg, value only for sendmsg.
  393:  */
  394: struct msghdr {
  395:         void           *msg_name;       /* optional address */
  396:         socklen_t      msg_namelen; /* size of address */
  397:         struct         iovec *msg_iov;        /* scatter/gather array */
  398:         unsigned int   msg_iovlen;       /* # elements in msg_iov */
  399:         void           *msg_control;    /* ancillary data, see below */
  400:         socklen_t      msg_controllen;      /* ancillary data buffer len */
  401:         int            msg_flags;        /* flags on received message */
  402: };
  403: 
  404: #define MSG_OOB         0x1            /* process out-of-band data */
  405: #define MSG_PEEK        0x2            /* peek at incoming message */
  406: #define MSG_DONTROUTE   0x4               /* send without using routing tables */
  407: #define MSG_EOR         0x8            /* data completes record */
  408: #define MSG_TRUNC       0x10          /* data discarded before delivery */
  409: #define MSG_CTRUNC      0x20         /* control data lost before delivery */
  410: #define MSG_WAITALL     0x40                /* wait for full request or error */
  411: #define MSG_DONTWAIT    0x80               /* this message should be nonblocking */
  412: #define MSG_BCAST       0x100         /* this message rec'd as broadcast */
  413: #define MSG_MCAST       0x200         /* this message rec'd as multicast */
  414: #define MSG_NOSIGNAL    0x400              /* do not send SIGPIPE */
  415: 
  416: /*
  417:  * Header for ancillary data objects in msg_control buffer.
  418:  * Used for additional information with/about a datagram
  419:  * not expressible by flags.  The format is a sequence
  420:  * of message elements headed by cmsghdr structures.
  421:  */
  422: struct cmsghdr {
  423:         socklen_t      cmsg_len;    /* data byte count, including hdr */
  424:         int            cmsg_level;       /* originating protocol */
  425:         int            cmsg_type;        /* protocol-specific type */
  426: /* followed by  u_char  cmsg_data[]; */
  427: };
  428: 
  429: /* given pointer to struct cmsghdr, return pointer to data */
  430: #define CMSG_DATA(cmsg) \
  431:         ((u_char *)(cmsg) + _ALIGN(sizeof(struct cmsghdr)))
  432: 
  433: /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
  434: #define CMSG_NXTHDR(mhdr, cmsg) \
  435:         (((caddr_t)(cmsg) + _ALIGN((cmsg)->cmsg_len) + \
  436:                             _ALIGN(sizeof(struct cmsghdr)) > \
  437:             ((caddr_t)(mhdr)->msg_control) + (mhdr)->msg_controllen) ? \
  438:             (struct cmsghdr *)NULL : \
  439:             (struct cmsghdr *)((caddr_t)(cmsg) + _ALIGN((cmsg)->cmsg_len)))
  440: 
  441: /*
  442:  * RFC 2292 requires to check msg_controllen, in case that the kernel returns
  443:  * an empty list for some reasons.
  444:  */
  445: #define CMSG_FIRSTHDR(mhdr) \
  446:         ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
  447:          (struct cmsghdr *)(mhdr)->msg_control : \
  448:          (struct cmsghdr *)NULL)
  449: 
  450: /* Round len up to next alignment boundary */
  451: #ifdef _KERNEL
  452: #define CMSG_ALIGN(n)           _ALIGN(n)
  453: #endif
  454: 
  455: /* Length of the contents of a control message of length len */
  456: #define CMSG_LEN(len)   (_ALIGN(sizeof(struct cmsghdr)) + (len))
  457: 
  458: /* Length of the space taken up by a padded control message of length len */
  459: #define CMSG_SPACE(len) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(len))
  460: 
  461: /* "Socket"-level control message types: */
  462: #define SCM_RIGHTS      0x01         /* access rights (array of int) */
  463: #define SCM_CREDS       0x02          /* credentials (struct sockcred) */
  464: #define SCM_TIMESTAMP   0x04              /* timestamp (struct timeval) */
  465: 
  466: /*
  467:  * 4.3 compat sockaddr, move to compat file later
  468:  */
  469: struct osockaddr {
  470:         unsigned short sa_family;      /* address family */
  471:         char           sa_data[14];     /* up to 14 bytes of direct address */
  472: };
  473: 
  474: /*
  475:  * 4.3-compat message header (move to compat file later).
  476:  */
  477: struct omsghdr {
  478:         caddr_t        msg_name;              /* optional address */
  479:         int    msg_namelen;               /* size of address */
  480:         struct iovec *msg_iov;         /* scatter/gather array */
  481:         int    msg_iovlen;                /* # elements in msg_iov */
  482:         caddr_t        msg_accrights;         /* access rights sent/received */
  483:         int    msg_accrightslen;
  484: };
  485: 
  486: #define SA_LEN(x) ((x)->sa_len)
  487: 
  488: #ifndef _KERNEL
  489: 
  490: #include <sys/cdefs.h>
  491: 
  492: __BEGIN_DECLS
  493: int     accept(int, struct sockaddr *, socklen_t *);
  494: int     bind(int, const struct sockaddr *, socklen_t);
  495: int     connect(int, const struct sockaddr *, socklen_t);
  496: int     getpeereid(int, uid_t *, gid_t *);
  497: int     getpeername(int, struct sockaddr *, socklen_t *);
  498: int     getsockname(int, struct sockaddr *, socklen_t *);
  499: int     getsockopt(int, int, int, void *, socklen_t *);
  500: int     listen(int, int);
  501: ssize_t recv(int, void *, size_t, int);
  502: ssize_t recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *);
  503: ssize_t recvmsg(int, struct msghdr *, int);
  504: ssize_t send(int, const void *, size_t, int);
  505: ssize_t sendto(int, const void *,
  506:             size_t, int, const struct sockaddr *, socklen_t);
  507: ssize_t sendmsg(int, const struct msghdr *, int);
  508: int     setsockopt(int, int, int, const void *, socklen_t);
  509: int     shutdown(int, int);
  510: int     socket(int, int, int);
  511: int     socketpair(int, int, int, int *);
  512: int     getrtable(void);
  513: int     setrtable(int);
  514: __END_DECLS
  515: 
  516: #else
  517: void    pfctlinput(int, struct sockaddr *);
  518: #endif /* !_KERNEL */
  519: 
  520: #endif /* !_SYS_SOCKET_H_ */