netdb.h revision 1.1 
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, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	@(#)netdb.h	5.15 (Berkeley) 4/3/91
34 */
35
36#ifndef _NETDB_H_
37#define _NETDB_H_
38
39#define	_PATH_HEQUIV	"/etc/hosts.equiv"
40#define	_PATH_HOSTS	"/etc/hosts"
41#define	_PATH_NETWORKS	"/etc/networks"
42#define	_PATH_PROTOCOLS	"/etc/protocols"
43#define	_PATH_SERVICES	"/etc/services"
44
45/*
46 * Structures returned by network data base library.  All addresses are
47 * supplied in host order, and returned in network order (suitable for
48 * use in system calls).
49 */
50struct	hostent {
51	char	*h_name;	/* official name of host */
52	char	**h_aliases;	/* alias list */
53	int	h_addrtype;	/* host address type */
54	int	h_length;	/* length of address */
55	char	**h_addr_list;	/* list of addresses from name server */
56#define	h_addr	h_addr_list[0]	/* address, for backward compatiblity */
57};
58
59/*
60 * Assumption here is that a network number
61 * fits in 32 bits -- probably a poor one.
62 */
63struct	netent {
64	char		*n_name;	/* official name of net */
65	char		**n_aliases;	/* alias list */
66	int		n_addrtype;	/* net address type */
67	unsigned long	n_net;		/* network # */
68};
69
70struct	servent {
71	char	*s_name;	/* official service name */
72	char	**s_aliases;	/* alias list */
73	int	s_port;		/* port # */
74	char	*s_proto;	/* protocol to use */
75};
76
77struct	protoent {
78	char	*p_name;	/* official protocol name */
79	char	**p_aliases;	/* alias list */
80	int	p_proto;	/* protocol # */
81};
82
83/*
84 * Error return codes from gethostbyname() and gethostbyaddr()
85 * (left in extern int h_errno).
86 */
87
88#define	HOST_NOT_FOUND	1 /* Authoritative Answer Host not found */
89#define	TRY_AGAIN	2 /* Non-Authoritive Host not found, or SERVERFAIL */
90#define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
91#define	NO_DATA		4 /* Valid name, no data record of requested type */
92#define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */
93
94#include <sys/cdefs.h>
95
96__BEGIN_DECLS
97void		endhostent __P((void));
98void		endnetent __P((void));
99void		endprotoent __P((void));
100void		endservent __P((void));
101struct hostent	*gethostbyaddr __P((const char *, int, int));
102struct hostent	*gethostbyname __P((char *));
103struct hostent *gethostent __P((void));
104struct netent	*getnetbyaddr __P((long, int)); /* u_long? */
105struct netent	*getnetbyname __P((const char *));
106struct netent	*getnetent __P((void));
107struct protoent	*getprotobyname __P((const char *));
108struct protoent	*getprotobynumber __P((int));
109struct protoent	*getprotoent __P((void));
110struct servent	*getservbyname __P((const char *, const char *));
111struct servent	*getservbyport __P((int, const char *));
112struct servent	*getservent __P((void));
113void		herror __P((const char *));
114void		sethostent __P((int));
115/* void		sethostfile __P((const char *)); */
116void		setnetent __P((int));
117void		setprotoent __P((int));
118void		setservent __P((int));
119__END_DECLS
120
121#endif /* !_NETDB_H_ */
122