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Annotation of 43BSDReno/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: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  *
        !            19:  *     @(#)netdb.h     5.11 (Berkeley) 5/21/90
        !            20:  */
        !            21: 
        !            22: #define        _PATH_HEQUIV    "/etc/hosts.equiv"
        !            23: #define        _PATH_HOSTS     "/etc/hosts"
        !            24: #define        _PATH_NETWORKS  "/etc/networks"
        !            25: #define        _PATH_PROTOCOLS "/etc/protocols"
        !            26: #define        _PATH_SERVICES  "/etc/services"
        !            27: 
        !            28: /*
        !            29:  * Structures returned by network data base library.  All addresses are
        !            30:  * supplied in host order, and returned in network order (suitable for
        !            31:  * use in system calls).
        !            32:  */
        !            33: struct hostent {
        !            34:        char    *h_name;        /* official name of host */
        !            35:        char    **h_aliases;    /* alias list */
        !            36:        int     h_addrtype;     /* host address type */
        !            37:        int     h_length;       /* length of address */
        !            38:        char    **h_addr_list;  /* list of addresses from name server */
        !            39: #define        h_addr  h_addr_list[0]  /* address, for backward compatiblity */
        !            40: };
        !            41: 
        !            42: /*
        !            43:  * Assumption here is that a network number
        !            44:  * fits in 32 bits -- probably a poor one.
        !            45:  */
        !            46: struct netent {
        !            47:        char            *n_name;        /* official name of net */
        !            48:        char            **n_aliases;    /* alias list */
        !            49:        int             n_addrtype;     /* net address type */
        !            50:        unsigned long   n_net;          /* network # */
        !            51: };
        !            52: 
        !            53: struct servent {
        !            54:        char    *s_name;        /* official service name */
        !            55:        char    **s_aliases;    /* alias list */
        !            56:        int     s_port;         /* port # */
        !            57:        char    *s_proto;       /* protocol to use */
        !            58: };
        !            59: 
        !            60: struct protoent {
        !            61:        char    *p_name;        /* official protocol name */
        !            62:        char    **p_aliases;    /* alias list */
        !            63:        int     p_proto;        /* protocol # */
        !            64: };
        !            65: 
        !            66: struct hostent *gethostbyname(), *gethostbyaddr(), *gethostent();
        !            67: struct netent  *getnetbyname(), *getnetbyaddr(), *getnetent();
        !            68: struct servent *getservbyname(), *getservbyport(), *getservent();
        !            69: struct protoent        *getprotobyname(), *getprotobynumber(), *getprotoent();
        !            70: 
        !            71: /*
        !            72:  * Error return codes from gethostbyname() and gethostbyaddr()
        !            73:  * (left in extern int h_errno).
        !            74:  */
        !            75: 
        !            76: #define        HOST_NOT_FOUND  1 /* Authoritative Answer Host not found */
        !            77: #define        TRY_AGAIN       2 /* Non-Authoritive Host not found, or SERVERFAIL */
        !            78: #define        NO_RECOVERY     3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
        !            79: #define        NO_DATA         4 /* Valid name, no data record of requested type */
        !            80: #define        NO_ADDRESS      NO_DATA         /* no address, look for MX record */

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