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Annotation of 42BSD/sys/h/socket.h, revision 1.1

1.1     ! root        1: /*     socket.h        6.1     83/07/29        */
        !             2: 
        !             3: /*
        !             4:  * Definitions related to sockets: types, address families, options.
        !             5:  */
        !             6: 
        !             7: /*
        !             8:  * Types
        !             9:  */
        !            10: #define        SOCK_STREAM     1               /* stream socket */
        !            11: #define        SOCK_DGRAM      2               /* datagram socket */
        !            12: #define        SOCK_RAW        3               /* raw-protocol interface */
        !            13: #define        SOCK_RDM        4               /* reliably-delivered message */
        !            14: #define        SOCK_SEQPACKET  5               /* sequenced packet stream */
        !            15: 
        !            16: /*
        !            17:  * Option flags per-socket.
        !            18:  */
        !            19: #define        SO_DEBUG        0x01            /* turn on debugging info recording */
        !            20: #define        SO_ACCEPTCONN   0x02            /* socket has had listen() */
        !            21: #define        SO_REUSEADDR    0x04            /* allow local address reuse */
        !            22: #define        SO_KEEPALIVE    0x08            /* keep connections alive */
        !            23: #define        SO_DONTROUTE    0x10            /* just use interface addresses */
        !            24:                                /* 0x20 was SO_NEWFDONCONN */
        !            25: #define        SO_USELOOPBACK  0x40            /* bypass hardware when possible */
        !            26: #define        SO_LINGER       0x80            /* linger on close if data present */
        !            27: #define        SO_DONTLINGER   (~SO_LINGER)    /* ~SO_LINGER */
        !            28: 
        !            29: /*
        !            30:  * Address families.
        !            31:  */
        !            32: #define        AF_UNSPEC       0               /* unspecified */
        !            33: #define        AF_UNIX         1               /* local to host (pipes, portals) */
        !            34: #define        AF_INET         2               /* internetwork: UDP, TCP, etc. */
        !            35: #define        AF_IMPLINK      3               /* arpanet imp addresses */
        !            36: #define        AF_PUP          4               /* pup protocols: e.g. BSP */
        !            37: #define        AF_CHAOS        5               /* mit CHAOS protocols */
        !            38: #define        AF_NS           6               /* XEROX NS protocols */
        !            39: #define        AF_NBS          7               /* nbs protocols */
        !            40: #define        AF_ECMA         8               /* european computer manufacturers */
        !            41: #define        AF_DATAKIT      9               /* datakit protocols */
        !            42: #define        AF_CCITT        10              /* CCITT protocols, X.25 etc */
        !            43: #define        AF_SNA          11              /* IBM SNA */
        !            44: 
        !            45: #define        AF_MAX          12
        !            46: 
        !            47: /*
        !            48:  * Structure used by kernel to store most
        !            49:  * addresses.
        !            50:  */
        !            51: struct sockaddr {
        !            52:        u_short sa_family;              /* address family */
        !            53:        char    sa_data[14];            /* up to 14 bytes of direct address */
        !            54: };
        !            55: 
        !            56: /*
        !            57:  * Structure used by kernel to pass protocol
        !            58:  * information in raw sockets.
        !            59:  */
        !            60: struct sockproto {
        !            61:        u_short sp_family;              /* address family */
        !            62:        u_short sp_protocol;            /* protocol */
        !            63: };
        !            64: 
        !            65: /*
        !            66:  * Protocol families, same as address families for now.
        !            67:  */
        !            68: #define        PF_UNSPEC       AF_UNSPEC
        !            69: #define        PF_UNIX         AF_UNIX
        !            70: #define        PF_INET         AF_INET
        !            71: #define        PF_IMPLINK      AF_IMPLINK
        !            72: #define        PF_PUP          AF_PUP
        !            73: #define        PF_CHAOS        AF_CHAOS
        !            74: #define        PF_NS           AF_NS
        !            75: #define        PF_NBS          AF_NBS
        !            76: #define        PF_ECMA         AF_ECMA
        !            77: #define        PF_DATAKIT      AF_DATAKIT
        !            78: #define        PF_CCITT        AF_CCITT
        !            79: #define        PF_SNA          AF_SNA
        !            80: 
        !            81: #define        PF_MAX          12
        !            82: 
        !            83: /*
        !            84:  * Level number for (get/set)sockopt() to apply to socket itself.
        !            85:  */
        !            86: #define        SOL_SOCKET      0xffff          /* options for socket level */
        !            87: 
        !            88: /*
        !            89:  * Maximum queue length specifiable by listen.
        !            90:  */
        !            91: #define        SOMAXCONN       5
        !            92: 
        !            93: /*
        !            94:  * Message header for recvmsg and sendmsg calls.
        !            95:  */
        !            96: struct msghdr {
        !            97:        caddr_t msg_name;               /* optional address */
        !            98:        int     msg_namelen;            /* size of address */
        !            99:        struct  iovec *msg_iov;         /* scatter/gather array */
        !           100:        int     msg_iovlen;             /* # elements in msg_iov */
        !           101:        caddr_t msg_accrights;          /* access rights sent/received */
        !           102:        int     msg_accrightslen;
        !           103: };
        !           104: 
        !           105: #define        MSG_OOB         0x1             /* process out-of-band data */
        !           106: #define        MSG_PEEK        0x2             /* peek at incoming message */
        !           107: #define        MSG_DONTROUTE   0x4             /* send without using routing tables */
        !           108: 
        !           109: #define        MSG_MAXIOVLEN   16

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