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Annotation of src/sys/sys/socket.h, Revision 1.8

1.1       cgd         1: /*
1.8     ! mycroft     2:  * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
        !             3:  *     The Regents of the University of California.  All rights reserved.
1.1       cgd         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. All advertising materials mentioning features or use of this software
                     14:  *    must display the following acknowledgement:
                     15:  *     This product includes software developed by the University of
                     16:  *     California, Berkeley and its contributors.
                     17:  * 4. Neither the name of the University nor the names of its contributors
                     18:  *    may be used to endorse or promote products derived from this software
                     19:  *    without specific prior written permission.
                     20:  *
                     21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     31:  * SUCH DAMAGE.
                     32:  *
1.8     ! mycroft    33:  *     from: @(#)socket.h      8.4 (Berkeley) 2/21/94
        !            34:  *     $Id: $
1.1       cgd        35:  */
                     36:
1.2       mycroft    37: #ifndef _SYS_SOCKET_H_
1.8     ! mycroft    38: #define        _SYS_SOCKET_H_
1.2       mycroft    39:
1.1       cgd        40: /*
                     41:  * Definitions related to sockets: types, address families, options.
                     42:  */
                     43:
                     44: /*
                     45:  * Types
                     46:  */
                     47: #define        SOCK_STREAM     1               /* stream socket */
                     48: #define        SOCK_DGRAM      2               /* datagram socket */
                     49: #define        SOCK_RAW        3               /* raw-protocol interface */
                     50: #define        SOCK_RDM        4               /* reliably-delivered message */
                     51: #define        SOCK_SEQPACKET  5               /* sequenced packet stream */
                     52:
                     53: /*
                     54:  * Option flags per-socket.
                     55:  */
                     56: #define        SO_DEBUG        0x0001          /* turn on debugging info recording */
                     57: #define        SO_ACCEPTCONN   0x0002          /* socket has had listen() */
                     58: #define        SO_REUSEADDR    0x0004          /* allow local address reuse */
                     59: #define        SO_KEEPALIVE    0x0008          /* keep connections alive */
                     60: #define        SO_DONTROUTE    0x0010          /* just use interface addresses */
                     61: #define        SO_BROADCAST    0x0020          /* permit sending of broadcast msgs */
                     62: #define        SO_USELOOPBACK  0x0040          /* bypass hardware when possible */
                     63: #define        SO_LINGER       0x0080          /* linger on close if data present */
                     64: #define        SO_OOBINLINE    0x0100          /* leave received OOB data in line */
1.8     ! mycroft    65: #define        SO_REUSEPORT    0x0200          /* allow local address & port reuse */
1.1       cgd        66:
                     67: /*
                     68:  * Additional options, not kept in so_options.
                     69:  */
                     70: #define SO_SNDBUF      0x1001          /* send buffer size */
                     71: #define SO_RCVBUF      0x1002          /* receive buffer size */
                     72: #define SO_SNDLOWAT    0x1003          /* send low-water mark */
                     73: #define SO_RCVLOWAT    0x1004          /* receive low-water mark */
                     74: #define SO_SNDTIMEO    0x1005          /* send timeout */
                     75: #define SO_RCVTIMEO    0x1006          /* receive timeout */
                     76: #define        SO_ERROR        0x1007          /* get error status and clear */
                     77: #define        SO_TYPE         0x1008          /* get socket type */
                     78:
                     79: /*
                     80:  * Structure used for manipulating linger option.
                     81:  */
                     82: struct linger {
                     83:        int     l_onoff;                /* option on/off */
                     84:        int     l_linger;               /* linger time */
                     85: };
                     86:
                     87: /*
                     88:  * Level number for (get/set)sockopt() to apply to socket itself.
                     89:  */
                     90: #define        SOL_SOCKET      0xffff          /* options for socket level */
                     91:
                     92: /*
                     93:  * Address families.
                     94:  */
                     95: #define        AF_UNSPEC       0               /* unspecified */
1.8     ! mycroft    96: #define        AF_LOCAL        1               /* local to host (pipes, portals) */
        !            97: #define        AF_UNIX         AF_LOCAL        /* backward compatibility */
1.1       cgd        98: #define        AF_INET         2               /* internetwork: UDP, TCP, etc. */
                     99: #define        AF_IMPLINK      3               /* arpanet imp addresses */
                    100: #define        AF_PUP          4               /* pup protocols: e.g. BSP */
                    101: #define        AF_CHAOS        5               /* mit CHAOS protocols */
                    102: #define        AF_NS           6               /* XEROX NS protocols */
                    103: #define        AF_ISO          7               /* ISO protocols */
                    104: #define        AF_OSI          AF_ISO
                    105: #define        AF_ECMA         8               /* european computer manufacturers */
                    106: #define        AF_DATAKIT      9               /* datakit protocols */
                    107: #define        AF_CCITT        10              /* CCITT protocols, X.25 etc */
                    108: #define        AF_SNA          11              /* IBM SNA */
                    109: #define AF_DECnet      12              /* DECnet */
                    110: #define AF_DLI         13              /* DEC Direct data link interface */
                    111: #define AF_LAT         14              /* LAT */
                    112: #define        AF_HYLINK       15              /* NSC Hyperchannel */
                    113: #define        AF_APPLETALK    16              /* Apple Talk */
                    114: #define        AF_ROUTE        17              /* Internal Routing Protocol */
                    115: #define        AF_LINK         18              /* Link layer interface */
                    116: #define        pseudo_AF_XTP   19              /* eXpress Transfer Protocol (no AF) */
1.8     ! mycroft   117: #define        AF_COIP         20              /* connection-oriented IP, aka ST II */
        !           118: #define        AF_CNT          21              /* Computer Network Technology */
        !           119: #define pseudo_AF_RTIP 22              /* Help Identify RTIP packets */
        !           120: #define        AF_IPX          23              /* Novell Internet Protocol */
        !           121: #define        AF_SIP          24              /* Simple Internet Protocol */
        !           122: #define pseudo_AF_PIP  25              /* Help Identify PIP packets */
1.1       cgd       123:
1.8     ! mycroft   124: #define        AF_MAX          26
1.1       cgd       125:
                    126: /*
                    127:  * Structure used by kernel to store most
                    128:  * addresses.
                    129:  */
                    130: struct sockaddr {
                    131:        u_char  sa_len;                 /* total length */
                    132:        u_char  sa_family;              /* address family */
                    133:        char    sa_data[14];            /* actually longer; address value */
                    134: };
                    135:
                    136: /*
                    137:  * Structure used by kernel to pass protocol
                    138:  * information in raw sockets.
                    139:  */
                    140: struct sockproto {
                    141:        u_short sp_family;              /* address family */
                    142:        u_short sp_protocol;            /* protocol */
                    143: };
                    144:
                    145: /*
                    146:  * Protocol families, same as address families for now.
                    147:  */
                    148: #define        PF_UNSPEC       AF_UNSPEC
1.8     ! mycroft   149: #define        PF_LOCAL        AF_LOCAL
        !           150: #define        PF_UNIX         PF_LOCAL        /* backward compatibility */
1.1       cgd       151: #define        PF_INET         AF_INET
                    152: #define        PF_IMPLINK      AF_IMPLINK
                    153: #define        PF_PUP          AF_PUP
                    154: #define        PF_CHAOS        AF_CHAOS
                    155: #define        PF_NS           AF_NS
                    156: #define        PF_ISO          AF_ISO
                    157: #define        PF_OSI          AF_ISO
                    158: #define        PF_ECMA         AF_ECMA
                    159: #define        PF_DATAKIT      AF_DATAKIT
                    160: #define        PF_CCITT        AF_CCITT
                    161: #define        PF_SNA          AF_SNA
                    162: #define PF_DECnet      AF_DECnet
                    163: #define PF_DLI         AF_DLI
                    164: #define PF_LAT         AF_LAT
                    165: #define        PF_HYLINK       AF_HYLINK
                    166: #define        PF_APPLETALK    AF_APPLETALK
                    167: #define        PF_ROUTE        AF_ROUTE
                    168: #define        PF_LINK         AF_LINK
                    169: #define        PF_XTP          pseudo_AF_XTP   /* really just proto family, no AF */
1.8     ! mycroft   170: #define        PF_COIP         AF_COIP
        !           171: #define        PF_CNT          AF_CNT
        !           172: #define        PF_SIP          AF_SIP
        !           173: #define        PF_IPX          AF_IPX          /* same format as AF_NS */
        !           174: #define PF_RTIP                pseudo_AF_FTIP  /* same format as AF_INET */
        !           175: #define PF_PIP         pseudo_AF_PIP
1.1       cgd       176:
                    177: #define        PF_MAX          AF_MAX
                    178:
                    179: /*
1.8     ! mycroft   180:  * Definitions for network related sysctl, CTL_NET.
        !           181:  *
        !           182:  * Second level is protocol family.
        !           183:  * Third level is protocol number.
        !           184:  *
        !           185:  * Further levels are defined by the individual families below.
        !           186:  */
        !           187: #define NET_MAXID      AF_MAX
        !           188:
        !           189: #define CTL_NET_NAMES { \
        !           190:        { 0, 0 }, \
        !           191:        { "unix", CTLTYPE_NODE }, \
        !           192:        { "inet", CTLTYPE_NODE }, \
        !           193:        { "implink", CTLTYPE_NODE }, \
        !           194:        { "pup", CTLTYPE_NODE }, \
        !           195:        { "chaos", CTLTYPE_NODE }, \
        !           196:        { "xerox_ns", CTLTYPE_NODE }, \
        !           197:        { "iso", CTLTYPE_NODE }, \
        !           198:        { "emca", CTLTYPE_NODE }, \
        !           199:        { "datakit", CTLTYPE_NODE }, \
        !           200:        { "ccitt", CTLTYPE_NODE }, \
        !           201:        { "ibm_sna", CTLTYPE_NODE }, \
        !           202:        { "decnet", CTLTYPE_NODE }, \
        !           203:        { "dec_dli", CTLTYPE_NODE }, \
        !           204:        { "lat", CTLTYPE_NODE }, \
        !           205:        { "hylink", CTLTYPE_NODE }, \
        !           206:        { "appletalk", CTLTYPE_NODE }, \
        !           207:        { "route", CTLTYPE_NODE }, \
        !           208:        { "link_layer", CTLTYPE_NODE }, \
        !           209:        { "xtp", CTLTYPE_NODE }, \
        !           210:        { "coip", CTLTYPE_NODE }, \
        !           211:        { "cnt", CTLTYPE_NODE }, \
        !           212:        { "rtip", CTLTYPE_NODE }, \
        !           213:        { "ipx", CTLTYPE_NODE }, \
        !           214:        { "sip", CTLTYPE_NODE }, \
        !           215:        { "pip", CTLTYPE_NODE }, \
        !           216: }
        !           217:
        !           218: /*
        !           219:  * PF_ROUTE - Routing table
        !           220:  *
        !           221:  * Three additional levels are defined:
        !           222:  *     Fourth: address family, 0 is wildcard
        !           223:  *     Fifth: type of info, defined below
        !           224:  *     Sixth: flag(s) to mask with for NET_RT_FLAGS
        !           225:  */
        !           226: #define NET_RT_DUMP    1               /* dump; may limit to a.f. */
        !           227: #define NET_RT_FLAGS   2               /* by flags, e.g. RESOLVING */
        !           228: #define NET_RT_IFLIST  3               /* survey interface list */
        !           229: #define        NET_RT_MAXID    4
        !           230:
        !           231: #define CTL_NET_RT_NAMES { \
        !           232:        { 0, 0 }, \
        !           233:        { "dump", CTLTYPE_STRUCT }, \
        !           234:        { "flags", CTLTYPE_STRUCT }, \
        !           235:        { "iflist", CTLTYPE_STRUCT }, \
        !           236: }
        !           237:
        !           238: /*
1.1       cgd       239:  * Maximum queue length specifiable by listen.
                    240:  */
                    241: #define        SOMAXCONN       5
                    242:
                    243: /*
                    244:  * Message header for recvmsg and sendmsg calls.
                    245:  * Used value-result for recvmsg, value only for sendmsg.
                    246:  */
                    247: struct msghdr {
                    248:        caddr_t msg_name;               /* optional address */
                    249:        u_int   msg_namelen;            /* size of address */
                    250:        struct  iovec *msg_iov;         /* scatter/gather array */
                    251:        u_int   msg_iovlen;             /* # elements in msg_iov */
                    252:        caddr_t msg_control;            /* ancillary data, see below */
                    253:        u_int   msg_controllen;         /* ancillary data buffer len */
                    254:        int     msg_flags;              /* flags on received message */
                    255: };
                    256:
                    257: #define        MSG_OOB         0x1             /* process out-of-band data */
                    258: #define        MSG_PEEK        0x2             /* peek at incoming message */
                    259: #define        MSG_DONTROUTE   0x4             /* send without using routing tables */
                    260: #define        MSG_EOR         0x8             /* data completes record */
                    261: #define        MSG_TRUNC       0x10            /* data discarded before delivery */
                    262: #define        MSG_CTRUNC      0x20            /* control data lost before delivery */
                    263: #define        MSG_WAITALL     0x40            /* wait for full request or error */
1.8     ! mycroft   264: #define        MSG_DONTWAIT    0x80            /* this message should be nonblocking */
1.1       cgd       265:
                    266: /*
                    267:  * Header for ancillary data objects in msg_control buffer.
                    268:  * Used for additional information with/about a datagram
                    269:  * not expressible by flags.  The format is a sequence
                    270:  * of message elements headed by cmsghdr structures.
                    271:  */
                    272: struct cmsghdr {
                    273:        u_int   cmsg_len;               /* data byte count, including hdr */
                    274:        int     cmsg_level;             /* originating protocol */
                    275:        int     cmsg_type;              /* protocol-specific type */
                    276: /* followed by u_char  cmsg_data[]; */
                    277: };
                    278:
1.8     ! mycroft   279: /* given pointer to struct cmsghdr, return pointer to data */
1.1       cgd       280: #define        CMSG_DATA(cmsg)         ((u_char *)((cmsg) + 1))
                    281:
1.8     ! mycroft   282: /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
1.1       cgd       283: #define        CMSG_NXTHDR(mhdr, cmsg) \
                    284:        (((caddr_t)(cmsg) + (cmsg)->cmsg_len + sizeof(struct cmsghdr) > \
                    285:            (mhdr)->msg_control + (mhdr)->msg_controllen) ? \
                    286:            (struct cmsghdr *)NULL : \
                    287:            (struct cmsghdr *)((caddr_t)(cmsg) + ALIGN((cmsg)->cmsg_len)))
                    288:
                    289: #define        CMSG_FIRSTHDR(mhdr)     ((struct cmsghdr *)(mhdr)->msg_control)
                    290:
                    291: /* "Socket"-level control message types: */
                    292: #define        SCM_RIGHTS      0x01            /* access rights (array of int) */
                    293:
                    294: /*
                    295:  * 4.3 compat sockaddr, move to compat file later
                    296:  */
                    297: struct osockaddr {
                    298:        u_short sa_family;              /* address family */
                    299:        char    sa_data[14];            /* up to 14 bytes of direct address */
                    300: };
                    301:
                    302: /*
                    303:  * 4.3-compat message header (move to compat file later).
                    304:  */
                    305: struct omsghdr {
                    306:        caddr_t msg_name;               /* optional address */
                    307:        int     msg_namelen;            /* size of address */
                    308:        struct  iovec *msg_iov;         /* scatter/gather array */
                    309:        int     msg_iovlen;             /* # elements in msg_iov */
                    310:        caddr_t msg_accrights;          /* access rights sent/received */
                    311:        int     msg_accrightslen;
                    312: };
                    313:
1.7       mycroft   314: #ifndef        KERNEL
1.1       cgd       315:
                    316: #include <sys/cdefs.h>
                    317:
                    318: __BEGIN_DECLS
                    319: int    accept __P((int, struct sockaddr *, int *));
                    320: int    bind __P((int, const struct sockaddr *, int));
                    321: int    connect __P((int, const struct sockaddr *, int));
                    322: int    getpeername __P((int, struct sockaddr *, int *));
                    323: int    getsockname __P((int, struct sockaddr *, int *));
                    324: int    getsockopt __P((int, int, int, void *, int *));
                    325: int    listen __P((int, int));
1.8     ! mycroft   326: ssize_t        recv __P((int, void *, size_t, int));
        !           327: ssize_t        recvfrom __P((int, void *, size_t, int, struct sockaddr *, int *));
        !           328: ssize_t        recvmsg __P((int, struct msghdr *, int));
        !           329: ssize_t        send __P((int, const void *, size_t, int));
        !           330: ssize_t        sendto __P((int, const void *,
        !           331:            size_t, int, const struct sockaddr *, int));
        !           332: ssize_t        sendmsg __P((int, const struct msghdr *, int));
1.1       cgd       333: int    setsockopt __P((int, int, int, const void *, int));
                    334: int    shutdown __P((int, int));
                    335: int    socket __P((int, int, int));
                    336: int    socketpair __P((int, int, int, int *));
                    337: __END_DECLS
                    338:
1.3       mycroft   339: #endif /* !KERNEL */
1.2       mycroft   340: #endif /* !_SYS_SOCKET_H_ */

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