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Annotation of 43BSD/include/netdb.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)netdb.h     5.7 (Berkeley) 5/12/86
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * Structures returned by network
        !            11:  * data base library.  All addresses
        !            12:  * are supplied in host order, and
        !            13:  * returned in network order (suitable
        !            14:  * for use in system calls).
        !            15:  */
        !            16: struct hostent {
        !            17:        char    *h_name;        /* official name of host */
        !            18:        char    **h_aliases;    /* alias list */
        !            19:        int     h_addrtype;     /* host address type */
        !            20:        int     h_length;       /* length of address */
        !            21:        char    **h_addr_list;  /* list of addresses from name server */
        !            22: #define        h_addr  h_addr_list[0]  /* address, for backward compatiblity */
        !            23: };
        !            24: 
        !            25: /*
        !            26:  * Assumption here is that a network number
        !            27:  * fits in 32 bits -- probably a poor one.
        !            28:  */
        !            29: struct netent {
        !            30:        char            *n_name;        /* official name of net */
        !            31:        char            **n_aliases;    /* alias list */
        !            32:        int             n_addrtype;     /* net address type */
        !            33:        unsigned long   n_net;          /* network # */
        !            34: };
        !            35: 
        !            36: struct servent {
        !            37:        char    *s_name;        /* official service name */
        !            38:        char    **s_aliases;    /* alias list */
        !            39:        int     s_port;         /* port # */
        !            40:        char    *s_proto;       /* protocol to use */
        !            41: };
        !            42: 
        !            43: struct protoent {
        !            44:        char    *p_name;        /* official protocol name */
        !            45:        char    **p_aliases;    /* alias list */
        !            46:        int     p_proto;        /* protocol # */
        !            47: };
        !            48: 
        !            49: struct hostent *gethostbyname(), *gethostbyaddr(), *gethostent();
        !            50: struct netent  *getnetbyname(), *getnetbyaddr(), *getnetent();
        !            51: struct servent *getservbyname(), *getservbyport(), *getservent();
        !            52: struct protoent        *getprotobyname(), *getprotobynumber(), *getprotoent();
        !            53: 
        !            54: /*
        !            55:  * Error return codes from gethostbyname() and gethostbyaddr()
        !            56:  */
        !            57: 
        !            58: extern  int h_errno;   
        !            59: 
        !            60: #define        HOST_NOT_FOUND  1 /* Authoritive Answer Host not found */
        !            61: #define        TRY_AGAIN       2 /* Non-Authoritive Host not found, or SERVERFAIL */
        !            62: #define        NO_RECOVERY     3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
        !            63: #define NO_ADDRESS     4 /* Valid host name, no address, look for MX record */

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