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

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980, 1983, 1988 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  *
        !            17:  *     @(#)netdb.h     5.10 (Berkeley) 6/27/88
        !            18:  */
        !            19: 
        !            20: /*
        !            21:  * Structures returned by network
        !            22:  * data base library.  All addresses
        !            23:  * are supplied in host order, and
        !            24:  * returned in network order (suitable
        !            25:  * for use in system calls).
        !            26:  */
        !            27: struct hostent {
        !            28:        char    *h_name;        /* official name of host */
        !            29:        char    **h_aliases;    /* alias list */
        !            30:        int     h_addrtype;     /* host address type */
        !            31:        int     h_length;       /* length of address */
        !            32:        char    **h_addr_list;  /* list of addresses from name server */
        !            33: #define        h_addr  h_addr_list[0]  /* address, for backward compatiblity */
        !            34: };
        !            35: 
        !            36: /*
        !            37:  * Assumption here is that a network number
        !            38:  * fits in 32 bits -- probably a poor one.
        !            39:  */
        !            40: struct netent {
        !            41:        char            *n_name;        /* official name of net */
        !            42:        char            **n_aliases;    /* alias list */
        !            43:        int             n_addrtype;     /* net address type */
        !            44:        unsigned long   n_net;          /* network # */
        !            45: };
        !            46: 
        !            47: struct servent {
        !            48:        char    *s_name;        /* official service name */
        !            49:        char    **s_aliases;    /* alias list */
        !            50:        int     s_port;         /* port # */
        !            51:        char    *s_proto;       /* protocol to use */
        !            52: };
        !            53: 
        !            54: struct protoent {
        !            55:        char    *p_name;        /* official protocol name */
        !            56:        char    **p_aliases;    /* alias list */
        !            57:        int     p_proto;        /* protocol # */
        !            58: };
        !            59: 
        !            60: struct hostent *gethostbyname(), *gethostbyaddr(), *gethostent();
        !            61: struct netent  *getnetbyname(), *getnetbyaddr(), *getnetent();
        !            62: struct servent *getservbyname(), *getservbyport(), *getservent();
        !            63: struct protoent        *getprotobyname(), *getprotobynumber(), *getprotoent();
        !            64: 
        !            65: /*
        !            66:  * Error return codes from gethostbyname() and gethostbyaddr()
        !            67:  * (left in extern int h_errno).
        !            68:  */
        !            69: 
        !            70: #define        HOST_NOT_FOUND  1 /* Authoritative Answer Host not found */
        !            71: #define        TRY_AGAIN       2 /* Non-Authoritive Host not found, or SERVERFAIL */
        !            72: #define        NO_RECOVERY     3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
        !            73: #define        NO_DATA         4 /* Valid name, no data record of requested type */
        !            74: #define        NO_ADDRESS      NO_DATA         /* no address, look for MX record */

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