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Annotation of 42BSD/sys/h/socket.h, revision 1.1.1.1

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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