3 * Portions Copyright (c) 1993-1999 Nokia Corporation and/or its subsidiary(-ies).
8 * Copyright (c) 1980, 1983, 1988, 1993
9 * The Regents of the University of California. All rights reserved.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
41 * Permission to use, copy, modify, and distribute this software for any
42 * purpose with or without fee is hereby granted, provided that the above
43 * copyright notice and this permission notice appear in all copies, and that
44 * the name of Digital Equipment Corporation not be used in advertising or
45 * publicity pertaining to distribution of the document or software without
46 * specific, written prior permission.
48 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
49 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
50 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
51 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
52 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
53 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
54 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
73 #include <sys/errno.h>
75 #define _PATH_HEQUIV "/etc/hosts.equiv"
76 #define _PATH_HOSTS "/etc/hosts"
77 #define _PATH_NETWORKS "/etc/networks"
78 #define _PATH_PROTOCOLS "/etc/protocols"
79 #define _PATH_SERVICES "/etc/services"
84 Structures returned by network data base library. All addresses are
85 supplied in host order, and returned in network order (suitable for
89 char *h_name; /* official name of host */
90 char **h_aliases; /* alias list */
91 int h_addrtype; /* host address type */
92 int h_length; /* length of address */
93 char **h_addr_list; /* list of addresses from name server */
94 #define h_addr h_addr_list[0] /* address, for backward compatibility */
98 Assumption here is that a network number
99 fits in an unsigned long -- probably a poor one.
102 char *n_name; /* official name of net */
103 char **n_aliases; /* alias list */
104 int n_addrtype; /* net address type */
105 unsigned long n_net; /* network # */
109 char *s_name; /* official service name */
110 char **s_aliases; /* alias list */
111 int s_port; /* port # */
112 char *s_proto; /* protocol to use */
116 char *p_name; /* official protocol name */
117 char **p_aliases; /* alias list */
118 int p_proto; /* protocol # */
122 Error return codes from gethostbyname() and gethostbyaddr()
124 #define NETDB_INTERNAL -1 /* see errno */
125 #define NETDB_SUCCESS 0 /* no problem */
126 #define HOST_NOT_FOUND ENOENT /* Authoritative Answer Host not found */
127 #define TRY_AGAIN ETIMEDOUT /* Non-Authoritative Host not found, or SERVERFAIL */
128 #define NO_RECOVERY ECOMM /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
129 #define NO_DATA 4 /* Valid name, no data record of requested type */
130 #define NO_ADDRESS NO_DATA /* no address, look for MX record */
132 IMPORT_C struct hostent *gethostbyaddr (const char *, int, int);
133 IMPORT_C struct hostent *gethostbyname (const char *);
134 struct servent *getservbyname (const char *, const char *);
135 struct servent *getservbyport (int, const char *);
136 struct netent *getnetbyaddr (unsigned long, int);
137 struct netent *getnetbyname (const char *);
138 struct protoent *getprotobyname (const char *);
139 struct protoent *getprotobynumber (int);
145 #endif /* !_NETDB_H_ */