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Annotation of src/sys/sys/socket.h, Revision 1.46.2.1

1.46.2.1! bouyer      1: /*     $NetBSD: socket.h,v 1.59 2000/10/04 08:59:16 toshii Exp $       */
1.44      itojun      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:  */
1.10      cgd        31:
1.1       cgd        32: /*
1.8       mycroft    33:  * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
                     34:  *     The Regents of the University of California.  All rights reserved.
1.1       cgd        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. All advertising materials mentioning features or use of this software
                     45:  *    must display the following acknowledgement:
                     46:  *     This product includes software developed by the University of
                     47:  *     California, Berkeley and its contributors.
                     48:  * 4. Neither the name of the University nor the names of its contributors
                     49:  *    may be used to endorse or promote products derived from this software
                     50:  *    without specific prior written permission.
                     51:  *
                     52:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     53:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     54:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     55:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     56:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     57:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     58:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     59:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     60:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     61:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     62:  * SUCH DAMAGE.
                     63:  *
1.28      fvdl       64:  *     @(#)socket.h    8.6 (Berkeley) 5/3/95
1.1       cgd        65:  */
                     66:
1.2       mycroft    67: #ifndef _SYS_SOCKET_H_
1.8       mycroft    68: #define        _SYS_SOCKET_H_
1.2       mycroft    69:
1.1       cgd        70: /*
                     71:  * Definitions related to sockets: types, address families, options.
                     72:  */
                     73:
                     74: /*
1.42      kleink     75:  * Data types.
                     76:  */
1.46.2.1! bouyer     77: #include <sys/ansi.h>
        !            78:
        !            79: #ifndef sa_family_t
        !            80: typedef __sa_family_t  sa_family_t;
        !            81: #define sa_family_t    __sa_family_t
        !            82: #endif
        !            83:
        !            84: #ifndef socklen_t
        !            85: typedef __socklen_t    socklen_t;
        !            86: #define socklen_t      __socklen_t
        !            87: #endif
1.42      kleink     88:
                     89: /*
                     90:  * Socket types.
1.1       cgd        91:  */
                     92: #define        SOCK_STREAM     1               /* stream socket */
                     93: #define        SOCK_DGRAM      2               /* datagram socket */
                     94: #define        SOCK_RAW        3               /* raw-protocol interface */
                     95: #define        SOCK_RDM        4               /* reliably-delivered message */
                     96: #define        SOCK_SEQPACKET  5               /* sequenced packet stream */
                     97:
                     98: /*
                     99:  * Option flags per-socket.
                    100:  */
                    101: #define        SO_DEBUG        0x0001          /* turn on debugging info recording */
                    102: #define        SO_ACCEPTCONN   0x0002          /* socket has had listen() */
                    103: #define        SO_REUSEADDR    0x0004          /* allow local address reuse */
                    104: #define        SO_KEEPALIVE    0x0008          /* keep connections alive */
                    105: #define        SO_DONTROUTE    0x0010          /* just use interface addresses */
                    106: #define        SO_BROADCAST    0x0020          /* permit sending of broadcast msgs */
                    107: #define        SO_USELOOPBACK  0x0040          /* bypass hardware when possible */
                    108: #define        SO_LINGER       0x0080          /* linger on close if data present */
                    109: #define        SO_OOBINLINE    0x0100          /* leave received OOB data in line */
1.8       mycroft   110: #define        SO_REUSEPORT    0x0200          /* allow local address & port reuse */
1.18      thorpej   111: #define        SO_TIMESTAMP    0x0400          /* timestamp received dgram traffic */
1.1       cgd       112:
                    113: /*
                    114:  * Additional options, not kept in so_options.
                    115:  */
                    116: #define SO_SNDBUF      0x1001          /* send buffer size */
                    117: #define SO_RCVBUF      0x1002          /* receive buffer size */
                    118: #define SO_SNDLOWAT    0x1003          /* send low-water mark */
                    119: #define SO_RCVLOWAT    0x1004          /* receive low-water mark */
                    120: #define SO_SNDTIMEO    0x1005          /* send timeout */
                    121: #define SO_RCVTIMEO    0x1006          /* receive timeout */
                    122: #define        SO_ERROR        0x1007          /* get error status and clear */
                    123: #define        SO_TYPE         0x1008          /* get socket type */
                    124:
                    125: /*
                    126:  * Structure used for manipulating linger option.
                    127:  */
                    128: struct linger {
                    129:        int     l_onoff;                /* option on/off */
1.28      fvdl      130:        int     l_linger;               /* linger time in seconds */
1.1       cgd       131: };
                    132:
                    133: /*
                    134:  * Level number for (get/set)sockopt() to apply to socket itself.
                    135:  */
                    136: #define        SOL_SOCKET      0xffff          /* options for socket level */
                    137:
                    138: /*
                    139:  * Address families.
                    140:  */
                    141: #define        AF_UNSPEC       0               /* unspecified */
1.8       mycroft   142: #define        AF_LOCAL        1               /* local to host (pipes, portals) */
                    143: #define        AF_UNIX         AF_LOCAL        /* backward compatibility */
1.1       cgd       144: #define        AF_INET         2               /* internetwork: UDP, TCP, etc. */
                    145: #define        AF_IMPLINK      3               /* arpanet imp addresses */
                    146: #define        AF_PUP          4               /* pup protocols: e.g. BSP */
                    147: #define        AF_CHAOS        5               /* mit CHAOS protocols */
                    148: #define        AF_NS           6               /* XEROX NS protocols */
                    149: #define        AF_ISO          7               /* ISO protocols */
                    150: #define        AF_OSI          AF_ISO
                    151: #define        AF_ECMA         8               /* european computer manufacturers */
                    152: #define        AF_DATAKIT      9               /* datakit protocols */
                    153: #define        AF_CCITT        10              /* CCITT protocols, X.25 etc */
                    154: #define        AF_SNA          11              /* IBM SNA */
                    155: #define AF_DECnet      12              /* DECnet */
                    156: #define AF_DLI         13              /* DEC Direct data link interface */
                    157: #define AF_LAT         14              /* LAT */
                    158: #define        AF_HYLINK       15              /* NSC Hyperchannel */
                    159: #define        AF_APPLETALK    16              /* Apple Talk */
                    160: #define        AF_ROUTE        17              /* Internal Routing Protocol */
                    161: #define        AF_LINK         18              /* Link layer interface */
1.42      kleink    162: #if !defined(_XOPEN_SOURCE)
1.1       cgd       163: #define        pseudo_AF_XTP   19              /* eXpress Transfer Protocol (no AF) */
1.42      kleink    164: #endif
1.8       mycroft   165: #define        AF_COIP         20              /* connection-oriented IP, aka ST II */
                    166: #define        AF_CNT          21              /* Computer Network Technology */
1.42      kleink    167: #if !defined(_XOPEN_SOURCE)
1.8       mycroft   168: #define pseudo_AF_RTIP 22              /* Help Identify RTIP packets */
1.42      kleink    169: #endif
1.8       mycroft   170: #define        AF_IPX          23              /* Novell Internet Protocol */
1.21      sommerfe  171: #define        AF_INET6        24              /* IP version 6 */
1.42      kleink    172: #if !defined(_XOPEN_SOURCE)
1.8       mycroft   173: #define pseudo_AF_PIP  25              /* Help Identify PIP packets */
1.42      kleink    174: #endif
1.17      chuck     175: #define AF_ISDN                26              /* Integrated Services Digital Network*/
                    176: #define AF_E164                AF_ISDN         /* CCITT E.164 recommendation */
                    177: #define AF_NATM                27              /* native ATM access */
1.19      is        178: #define AF_ARP         28              /* (rev.) addr. res. prot. (RFC 826) */
1.42      kleink    179: #if !defined(_XOPEN_SOURCE)
1.21      sommerfe  180: #define pseudo_AF_KEY  29              /* Internal key management protocol  */
1.31      thorpej   181: #define        pseudo_AF_HDRCMPLT 30           /* Used by BPF to not rewrite hdrs
                    182:                                           in interface output routine */
1.42      kleink    183: #endif
1.1       cgd       184:
1.31      thorpej   185: #define        AF_MAX          31
1.1       cgd       186:
                    187: /*
1.26      thorpej   188:  * Structure used by kernel to store most
                    189:  * addresses.
1.1       cgd       190:  */
                    191: struct sockaddr {
1.46.2.1! bouyer    192:        u_char          sa_len;         /* total length */
        !           193:        sa_family_t     sa_family;      /* address family */
        !           194:        char            sa_data[14];    /* actually longer; address value */
1.26      thorpej   195: };
1.1       cgd       196:
1.42      kleink    197: #if defined(_KERNEL)
1.1       cgd       198: /*
                    199:  * Structure used by kernel to pass protocol
                    200:  * information in raw sockets.
                    201:  */
                    202: struct sockproto {
                    203:        u_short sp_family;              /* address family */
                    204:        u_short sp_protocol;            /* protocol */
                    205: };
1.42      kleink    206: #endif /* _KERNEL */
1.1       cgd       207:
1.44      itojun    208: #if 1
                    209: /*
                    210:  * RFC 2553: protocol-independent placeholder for socket addresses
                    211:  */
                    212: #define _SS_MAXSIZE    128
                    213: #define _SS_ALIGNSIZE  (sizeof(int64_t))
                    214: #define _SS_PAD1SIZE   (_SS_ALIGNSIZE - sizeof(u_char) * 2)
                    215: #define _SS_PAD2SIZE   (_SS_MAXSIZE - sizeof(u_char) * 2 - \
                    216:                                _SS_PAD1SIZE - _SS_ALIGNSIZE)
                    217:
1.46      kleink    218: #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 500
1.44      itojun    219: struct sockaddr_storage {
1.46.2.1! bouyer    220:        u_char          ss_len;         /* address length */
        !           221:        sa_family_t     ss_family;      /* address family */
        !           222:        char            __ss_pad1[_SS_PAD1SIZE];
        !           223:        int64_t      __ss_align;/* force desired structure storage alignment */
        !           224:        char            __ss_pad2[_SS_PAD2SIZE];
1.44      itojun    225: };
1.46      kleink    226: #endif /* !_XOPEN_SOURCE || ... */
                    227: #endif /* 1 */
1.44      itojun    228:
1.1       cgd       229: /*
                    230:  * Protocol families, same as address families for now.
                    231:  */
                    232: #define        PF_UNSPEC       AF_UNSPEC
1.8       mycroft   233: #define        PF_LOCAL        AF_LOCAL
                    234: #define        PF_UNIX         PF_LOCAL        /* backward compatibility */
1.1       cgd       235: #define        PF_INET         AF_INET
                    236: #define        PF_IMPLINK      AF_IMPLINK
                    237: #define        PF_PUP          AF_PUP
                    238: #define        PF_CHAOS        AF_CHAOS
                    239: #define        PF_NS           AF_NS
                    240: #define        PF_ISO          AF_ISO
                    241: #define        PF_OSI          AF_ISO
                    242: #define        PF_ECMA         AF_ECMA
                    243: #define        PF_DATAKIT      AF_DATAKIT
                    244: #define        PF_CCITT        AF_CCITT
                    245: #define        PF_SNA          AF_SNA
                    246: #define PF_DECnet      AF_DECnet
                    247: #define PF_DLI         AF_DLI
                    248: #define PF_LAT         AF_LAT
                    249: #define        PF_HYLINK       AF_HYLINK
                    250: #define        PF_APPLETALK    AF_APPLETALK
                    251: #define        PF_ROUTE        AF_ROUTE
                    252: #define        PF_LINK         AF_LINK
1.42      kleink    253: #if !defined(_XOPEN_SOURCE)
1.1       cgd       254: #define        PF_XTP          pseudo_AF_XTP   /* really just proto family, no AF */
1.42      kleink    255: #endif
1.8       mycroft   256: #define        PF_COIP         AF_COIP
                    257: #define        PF_CNT          AF_CNT
1.21      sommerfe  258: #define        PF_INET6        AF_INET6
1.8       mycroft   259: #define        PF_IPX          AF_IPX          /* same format as AF_NS */
1.42      kleink    260: #if !defined(_XOPEN_SOURCE)
1.8       mycroft   261: #define PF_RTIP                pseudo_AF_FTIP  /* same format as AF_INET */
                    262: #define PF_PIP         pseudo_AF_PIP
1.42      kleink    263: #endif
1.20      is        264: #define PF_ISDN                AF_ISDN         /* same as E164 */
                    265: #define PF_E164                AF_E164
1.17      chuck     266: #define PF_NATM                AF_NATM
1.19      is        267: #define PF_ARP         AF_ARP
1.42      kleink    268: #if !defined(_XOPEN_SOURCE)
1.21      sommerfe  269: #define PF_KEY                 pseudo_AF_KEY   /* like PF_ROUTE, only for key mgmt */
1.42      kleink    270: #endif
1.1       cgd       271:
                    272: #define        PF_MAX          AF_MAX
                    273:
1.42      kleink    274: #if !defined(_XOPEN_SOURCE)
1.1       cgd       275: /*
1.27      thorpej   276:  * Socket credentials.
                    277:  */
                    278: struct sockcred {
                    279:        uid_t   sc_uid;                 /* real user id */
                    280:        uid_t   sc_euid;                /* effective user id */
                    281:        gid_t   sc_gid;                 /* real group id */
                    282:        gid_t   sc_egid;                /* effective group id */
                    283:        int     sc_ngroups;             /* number of supplemental groups */
                    284:        gid_t   sc_groups[1];           /* variable length */
                    285: };
                    286:
                    287: /*
                    288:  * Compute size of a sockcred structure with groups.
                    289:  */
                    290: #define        SOCKCREDSIZE(ngrps) \
                    291:        (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))
1.42      kleink    292: #endif /* !_XOPEN_SOURCE */
1.27      thorpej   293:
1.38      kleink    294:
                    295: #if !defined(_XOPEN_SOURCE)
1.27      thorpej   296: /*
1.8       mycroft   297:  * Definitions for network related sysctl, CTL_NET.
                    298:  *
                    299:  * Second level is protocol family.
                    300:  * Third level is protocol number.
                    301:  *
                    302:  * Further levels are defined by the individual families below.
                    303:  */
                    304: #define NET_MAXID      AF_MAX
                    305:
                    306: #define CTL_NET_NAMES { \
                    307:        { 0, 0 }, \
1.28      fvdl      308:        { "local", CTLTYPE_NODE }, \
1.8       mycroft   309:        { "inet", CTLTYPE_NODE }, \
                    310:        { "implink", CTLTYPE_NODE }, \
                    311:        { "pup", CTLTYPE_NODE }, \
                    312:        { "chaos", CTLTYPE_NODE }, \
                    313:        { "xerox_ns", CTLTYPE_NODE }, \
                    314:        { "iso", CTLTYPE_NODE }, \
                    315:        { "emca", CTLTYPE_NODE }, \
                    316:        { "datakit", CTLTYPE_NODE }, \
                    317:        { "ccitt", CTLTYPE_NODE }, \
                    318:        { "ibm_sna", CTLTYPE_NODE }, \
                    319:        { "decnet", CTLTYPE_NODE }, \
                    320:        { "dec_dli", CTLTYPE_NODE }, \
                    321:        { "lat", CTLTYPE_NODE }, \
                    322:        { "hylink", CTLTYPE_NODE }, \
                    323:        { "appletalk", CTLTYPE_NODE }, \
                    324:        { "route", CTLTYPE_NODE }, \
                    325:        { "link_layer", CTLTYPE_NODE }, \
                    326:        { "xtp", CTLTYPE_NODE }, \
                    327:        { "coip", CTLTYPE_NODE }, \
                    328:        { "cnt", CTLTYPE_NODE }, \
                    329:        { "rtip", CTLTYPE_NODE }, \
                    330:        { "ipx", CTLTYPE_NODE }, \
1.21      sommerfe  331:        { "inet6", CTLTYPE_NODE }, \
1.8       mycroft   332:        { "pip", CTLTYPE_NODE }, \
1.20      is        333:        { "isdn", CTLTYPE_NODE }, \
1.17      chuck     334:        { "natm", CTLTYPE_NODE }, \
1.20      is        335:        { "arp", CTLTYPE_NODE }, \
1.21      sommerfe  336:        { "key", CTLTYPE_NODE }, \
1.8       mycroft   337: }
1.38      kleink    338: #endif /* !_XOPEN_SOURCE */
1.8       mycroft   339:
1.38      kleink    340: #if !defined(_XOPEN_SOURCE)
1.8       mycroft   341: /*
                    342:  * PF_ROUTE - Routing table
                    343:  *
                    344:  * Three additional levels are defined:
                    345:  *     Fourth: address family, 0 is wildcard
                    346:  *     Fifth: type of info, defined below
                    347:  *     Sixth: flag(s) to mask with for NET_RT_FLAGS
                    348:  */
                    349: #define NET_RT_DUMP    1               /* dump; may limit to a.f. */
                    350: #define NET_RT_FLAGS   2               /* by flags, e.g. RESOLVING */
1.46.2.1! bouyer    351: #define NET_RT_OIFLIST 3               /* old NET_RT_IFLIST (pre 1.5) */
        !           352: #define NET_RT_IFLIST  4               /* survey interface list */
        !           353: #define        NET_RT_MAXID    5
1.8       mycroft   354:
                    355: #define CTL_NET_RT_NAMES { \
                    356:        { 0, 0 }, \
                    357:        { "dump", CTLTYPE_STRUCT }, \
                    358:        { "flags", CTLTYPE_STRUCT }, \
1.46.2.1! bouyer    359:        { 0, 0 }, \
1.8       mycroft   360:        { "iflist", CTLTYPE_STRUCT }, \
                    361: }
1.38      kleink    362: #endif /* !_XOPEN_SOURCE */
1.8       mycroft   363:
                    364: /*
1.13      mycroft   365:  * Maximum queue length specifiable by listen(2).
1.1       cgd       366:  */
1.16      neil      367:
1.13      mycroft   368: #define        SOMAXCONN       128
1.16      neil      369:
1.1       cgd       370: /*
                    371:  * Message header for recvmsg and sendmsg calls.
                    372:  * Used value-result for recvmsg, value only for sendmsg.
                    373:  */
                    374: struct msghdr {
1.42      kleink    375:        void            *msg_name;      /* optional address */
                    376:        socklen_t       msg_namelen;    /* size of address */
                    377:        struct iovec    *msg_iov;       /* scatter/gather array */
                    378:        int             msg_iovlen;     /* # elements in msg_iov */
                    379:        void            *msg_control;   /* ancillary data, see below */
                    380:        socklen_t       msg_controllen; /* ancillary data buffer len */
                    381:        int             msg_flags;      /* flags on received message */
1.1       cgd       382: };
                    383:
                    384: #define        MSG_OOB         0x1             /* process out-of-band data */
                    385: #define        MSG_PEEK        0x2             /* peek at incoming message */
                    386: #define        MSG_DONTROUTE   0x4             /* send without using routing tables */
                    387: #define        MSG_EOR         0x8             /* data completes record */
                    388: #define        MSG_TRUNC       0x10            /* data discarded before delivery */
                    389: #define        MSG_CTRUNC      0x20            /* control data lost before delivery */
                    390: #define        MSG_WAITALL     0x40            /* wait for full request or error */
1.8       mycroft   391: #define        MSG_DONTWAIT    0x80            /* this message should be nonblocking */
1.30      matt      392: #define        MSG_BCAST       0x100           /* this message was rcvd using link-level brdcst */
                    393: #define        MSG_MCAST       0x200           /* this message was rcvd using link-level mcast */
1.1       cgd       394:
                    395: /*
                    396:  * Header for ancillary data objects in msg_control buffer.
                    397:  * Used for additional information with/about a datagram
                    398:  * not expressible by flags.  The format is a sequence
                    399:  * of message elements headed by cmsghdr structures.
                    400:  */
                    401: struct cmsghdr {
1.42      kleink    402:        socklen_t       cmsg_len;       /* data byte count, including hdr */
                    403:        int             cmsg_level;     /* originating protocol */
                    404:        int             cmsg_type;      /* protocol-specific type */
1.1       cgd       405: /* followed by u_char  cmsg_data[]; */
                    406: };
                    407:
1.8       mycroft   408: /* given pointer to struct cmsghdr, return pointer to data */
1.46.2.1! bouyer    409: #define        CMSG_DATA(cmsg) \
        !           410:        ((u_char *)(void *)(cmsg) + __CMSG_ALIGN(sizeof(struct cmsghdr)))
1.1       cgd       411:
1.44      itojun    412: /*
                    413:  * Alignment requirement for CMSG struct manipulation.
1.46.2.1! bouyer    414:  * This basically behaves the same as ALIGN() ARCH/include/param.h.
        !           415:  * We declare it separately for two reasons:
        !           416:  * (1) avoid dependency between machine/param.h, and (2) to sync with kernel's
        !           417:  * idea of ALIGNBYTES at runtime.
        !           418:  * without (2), we can't guarantee binary compatibility in case of future
        !           419:  * changes in ALIGNBYTES.
        !           420:  */
        !           421: #define __CMSG_ALIGN(n)        (((n) + __cmsg_alignbytes()) & ~__cmsg_alignbytes())
        !           422: #ifdef _KERNEL
        !           423: #define CMSG_ALIGN(n)  __CMSG_ALIGN(n)
        !           424: #endif
1.44      itojun    425:
1.8       mycroft   426: /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
1.1       cgd       427: #define        CMSG_NXTHDR(mhdr, cmsg) \
1.46.2.1! bouyer    428:        (((caddr_t)(cmsg) + __CMSG_ALIGN((cmsg)->cmsg_len) + \
        !           429:                            __CMSG_ALIGN(sizeof(struct cmsghdr)) > \
1.45      itojun    430:            (((caddr_t)(mhdr)->msg_control) + (mhdr)->msg_controllen)) ? \
1.1       cgd       431:            (struct cmsghdr *)NULL : \
1.46.2.1! bouyer    432:            (struct cmsghdr *)((caddr_t)(cmsg) + __CMSG_ALIGN((cmsg)->cmsg_len)))
1.1       cgd       433:
                    434: #define        CMSG_FIRSTHDR(mhdr)     ((struct cmsghdr *)(mhdr)->msg_control)
                    435:
1.46.2.1! bouyer    436: #define CMSG_SPACE(l)  (__CMSG_ALIGN(sizeof(struct cmsghdr)) + __CMSG_ALIGN(l))
        !           437: #define CMSG_LEN(l)    (__CMSG_ALIGN(sizeof(struct cmsghdr)) + (l))
1.44      itojun    438:
1.1       cgd       439: /* "Socket"-level control message types: */
                    440: #define        SCM_RIGHTS      0x01            /* access rights (array of int) */
1.42      kleink    441: #if !defined(_XOPEN_SOURCE)
1.18      thorpej   442: #define        SCM_TIMESTAMP   0x02            /* timestamp (struct timeval) */
1.42      kleink    443: #define        SCM_CREDS       0x04            /* credentials (struct sockcred) */
                    444: #endif
1.29      kleink    445:
                    446: /*
                    447:  * Types of socket shutdown(2).
                    448:  */
                    449: #define        SHUT_RD         0               /* Disallow further receives. */
                    450: #define        SHUT_WR         1               /* Disallow further sends. */
                    451: #define        SHUT_RDWR       2               /* Disallow further sends/receives. */
1.1       cgd       452:
1.42      kleink    453: #if !defined(_XOPEN_SOURCE)
1.1       cgd       454: /*
                    455:  * 4.3 compat sockaddr, move to compat file later
                    456:  */
                    457: struct osockaddr {
                    458:        u_short sa_family;              /* address family */
                    459:        char    sa_data[14];            /* up to 14 bytes of direct address */
                    460: };
                    461:
                    462: /*
                    463:  * 4.3-compat message header (move to compat file later).
                    464:  */
                    465: struct omsghdr {
                    466:        caddr_t msg_name;               /* optional address */
                    467:        int     msg_namelen;            /* size of address */
                    468:        struct  iovec *msg_iov;         /* scatter/gather array */
                    469:        int     msg_iovlen;             /* # elements in msg_iov */
                    470:        caddr_t msg_accrights;          /* access rights sent/received */
                    471:        int     msg_accrightslen;
                    472: };
1.42      kleink    473: #endif
1.1       cgd       474:
                    475: #include <sys/cdefs.h>
                    476:
                    477: __BEGIN_DECLS
1.46.2.1! bouyer    478: int    __cmsg_alignbytes __P((void));
        !           479: __END_DECLS
        !           480:
        !           481: #ifndef        _KERNEL
        !           482:
        !           483: __BEGIN_DECLS
1.42      kleink    484: int    accept __P((int, struct sockaddr *, socklen_t *));
                    485: int    bind __P((int, const struct sockaddr *, socklen_t));
                    486: int    connect __P((int, const struct sockaddr *, socklen_t));
                    487: int    getpeername __P((int, struct sockaddr *, socklen_t *));
                    488: int    getsockname __P((int, struct sockaddr *, socklen_t *));
                    489: int    getsockopt __P((int, int, int, void *, socklen_t *));
1.1       cgd       490: int    listen __P((int, int));
1.8       mycroft   491: ssize_t        recv __P((int, void *, size_t, int));
1.42      kleink    492: ssize_t        recvfrom __P((int, void *, size_t, int, struct sockaddr *,
                    493:            socklen_t *));
1.8       mycroft   494: ssize_t        recvmsg __P((int, struct msghdr *, int));
                    495: ssize_t        send __P((int, const void *, size_t, int));
                    496: ssize_t        sendto __P((int, const void *,
1.42      kleink    497:            size_t, int, const struct sockaddr *, socklen_t));
1.8       mycroft   498: ssize_t        sendmsg __P((int, const struct msghdr *, int));
1.42      kleink    499: int    setsockopt __P((int, int, int, const void *, socklen_t));
1.1       cgd       500: int    shutdown __P((int, int));
                    501: int    socket __P((int, int, int));
                    502: int    socketpair __P((int, int, int, int *));
                    503: __END_DECLS
1.14      christos  504: #else
1.41      drochner  505: #ifdef COMPAT_OLDSOCK
                    506: #define MSG_COMPAT     0x8000
                    507: #endif
1.14      christos  508: #endif /* !_KERNEL */
1.1       cgd       509:
1.2       mycroft   510: #endif /* !_SYS_SOCKET_H_ */

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