1/*-
2 * Copyright (c) 1980, 1983, 1988, 1993
3 *	The Regents of the University of California.  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 * -
34 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
35 *
36 * Permission to use, copy, modify, and distribute this software for any
37 * purpose with or without fee is hereby granted, provided that the above
38 * copyright notice and this permission notice appear in all copies, and that
39 * the name of Digital Equipment Corporation not be used in advertising or
40 * publicity pertaining to distribution of the document or software without
41 * specific, written prior permission.
42 *
43 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
44 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
45 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
46 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
47 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
48 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
49 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
50 * SOFTWARE.
51 * -
52 * --Copyright--
53 */
54
55/*
56 *      @(#)netdb.h	8.1 (Berkeley) 6/2/93
57 *      From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $
58 * $FreeBSD: /repoman/r/ncvs/src/include/netdb.h,v 1.41 2006/04/15 16:20:26 ume Exp $
59 */
60
61#ifndef _NETDB_H_
62#define _NETDB_H_
63
64#include <sys/cdefs.h>
65#include <sys/types.h>
66#include <sys/socket.h>
67
68#ifndef _PATH_HEQUIV
69# define	_PATH_HEQUIV	"/system/etc/hosts.equiv"
70#endif
71#define	_PATH_HOSTS	"/system/etc/hosts"
72#define	_PATH_NETWORKS	"/system/etc/networks"
73#define	_PATH_PROTOCOLS	"/system/etc/protocols"
74#define	_PATH_SERVICES	"/system/etc/services"
75
76#define  MAXHOSTNAMELEN  256
77
78
79/*
80 * Structures returned by network data base library.  All addresses are
81 * supplied in host order, and returned in network order (suitable for
82 * use in system calls).
83 */
84struct hostent {
85	char	*h_name;	/* official name of host */
86	char	**h_aliases;	/* alias list */
87	int	h_addrtype;	/* host address type */
88	int	h_length;	/* length of address */
89	char	**h_addr_list;	/* list of addresses from name server */
90#define	h_addr	h_addr_list[0]	/* address, for backward compatibility */
91};
92
93struct netent {
94	char		*n_name;	/* official name of net */
95	char		**n_aliases;	/* alias list */
96	int		n_addrtype;	/* net address type */
97	uint32_t	n_net;		/* network # */
98};
99
100struct servent {
101	char	*s_name;	/* official service name */
102	char	**s_aliases;	/* alias list */
103	int	s_port;		/* port # */
104	char	*s_proto;	/* protocol to use */
105};
106
107struct protoent {
108	char	*p_name;	/* official protocol name */
109	char	**p_aliases;	/* alias list */
110	int	p_proto;	/* protocol # */
111};
112
113struct addrinfo {
114	int	ai_flags;	/* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
115	int	ai_family;	/* PF_xxx */
116	int	ai_socktype;	/* SOCK_xxx */
117	int	ai_protocol;	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
118	socklen_t ai_addrlen;	/* length of ai_addr */
119	char	*ai_canonname;	/* canonical name for hostname */
120	struct	sockaddr *ai_addr;	/* binary address */
121	struct	addrinfo *ai_next;	/* next structure in linked list */
122};
123
124/*
125 * Error return codes from gethostbyname() and gethostbyaddr()
126 * (left in h_errno).
127 */
128
129#define	NETDB_INTERNAL	-1	/* see errno */
130#define	NETDB_SUCCESS	0	/* no problem */
131#define	HOST_NOT_FOUND	1 /* Authoritative Answer Host not found */
132#define	TRY_AGAIN	2 /* Non-Authoritative Host not found, or SERVERFAIL */
133#define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
134#define	NO_DATA		4 /* Valid name, no data record of requested type */
135#define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */
136
137/*
138 * Error return codes from getaddrinfo()
139 */
140#define	EAI_ADDRFAMILY	 1	/* address family for hostname not supported */
141#define	EAI_AGAIN	 2	/* temporary failure in name resolution */
142#define	EAI_BADFLAGS	 3	/* invalid value for ai_flags */
143#define	EAI_FAIL	 4	/* non-recoverable failure in name resolution */
144#define	EAI_FAMILY	 5	/* ai_family not supported */
145#define	EAI_MEMORY	 6	/* memory allocation failure */
146#define	EAI_NODATA	 7	/* no address associated with hostname */
147#define	EAI_NONAME	 8	/* hostname nor servname provided, or not known */
148#define	EAI_SERVICE	 9	/* servname not supported for ai_socktype */
149#define	EAI_SOCKTYPE	10	/* ai_socktype not supported */
150#define	EAI_SYSTEM	11	/* system error returned in errno */
151#define	EAI_BADHINTS	12	/* invalid value for hints */
152#define	EAI_PROTOCOL	13	/* resolved protocol is unknown */
153#define	EAI_OVERFLOW	14	/* argument buffer overflow */
154#define	EAI_MAX		15
155
156/*
157 * Flag values for getaddrinfo()
158 */
159#define	AI_PASSIVE	0x00000001 /* get address to use bind() */
160#define	AI_CANONNAME	0x00000002 /* fill ai_canonname */
161#define	AI_NUMERICHOST	0x00000004 /* prevent host name resolution */
162#define	AI_NUMERICSERV	0x00000008 /* prevent service name resolution */
163/* valid flags for addrinfo (not a standard def, apps should not use it) */
164#define AI_MASK \
165    (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \
166    AI_ADDRCONFIG)
167
168#define	AI_ALL		0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
169#define	AI_V4MAPPED_CFG	0x00000200 /* accept IPv4-mapped if kernel supports */
170#define	AI_ADDRCONFIG	0x00000400 /* only if any address is assigned */
171#define	AI_V4MAPPED	0x00000800 /* accept IPv4-mapped IPv6 address */
172/* special recommended flags for getipnodebyname */
173#define	AI_DEFAULT	(AI_V4MAPPED_CFG | AI_ADDRCONFIG)
174
175/*
176 * Constants for getnameinfo()
177 */
178#define	NI_MAXHOST	1025
179#define	NI_MAXSERV	32
180
181/*
182 * Flag values for getnameinfo()
183 */
184#define	NI_NOFQDN	0x00000001
185#define	NI_NUMERICHOST	0x00000002
186#define	NI_NAMEREQD	0x00000004
187#define	NI_NUMERICSERV	0x00000008
188#define	NI_DGRAM	0x00000010
189#if 0 /* obsolete */
190#define NI_WITHSCOPEID	0x00000020
191#endif
192
193/*
194 * Scope delimit character
195 */
196#define	SCOPE_DELIMITER	'%'
197
198__BEGIN_DECLS
199#pragma GCC visibility push(default)
200
201/* BIONIC-BEGIN */
202#define  h_errno   (*__get_h_errno())
203int*  __get_h_errno(void);
204/* BIONIC-END */
205void endhostent(void);
206void endnetent(void);
207void endnetgrent(void);
208void endprotoent(void);
209void endservent(void);
210void freehostent(struct hostent *);
211struct hostent	*gethostbyaddr(const void *, socklen_t, int);
212int gethostbyaddr_r(const void *, int, int, struct hostent *, char *, size_t, struct hostent **, int *);
213struct hostent	*gethostbyname(const char *);
214int gethostbyname_r(const char *, struct hostent *, char *, size_t, struct hostent **, int *);
215struct hostent	*gethostbyname2(const char *, int);
216int gethostbyname2_r(const char *, int, struct hostent *, char *, size_t, struct hostent **, int *);
217struct hostent	*gethostent(void);
218int gethostent_r(struct hostent *, char *, size_t, struct hostent **, int *);
219struct hostent	*getipnodebyaddr(const void *, size_t, int, int *);
220struct hostent	*getipnodebyname(const char *, int, int, int *);
221struct netent	*getnetbyaddr(uint32_t, int);
222int getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t, struct netent**, int *);
223struct netent	*getnetbyname(const char *);
224int getnetbyname_r(const char *, struct netent *, char *, size_t, struct netent **, int *);
225struct netent	*getnetent(void);
226int getnetent_r(struct netent *, char *, size_t, struct netent **, int *);
227int getnetgrent(char **, char **, char **);
228struct protoent	*getprotobyname(const char *);
229int getprotobyname_r(const char *, struct protoent *, char *, size_t, struct protoent **);
230struct protoent	*getprotobynumber(int);
231int getprotobynumber_r(int, struct protoent *, char *, size_t, struct protoent **);
232struct protoent	*getprotoent(void);
233int getprotoent_r(struct protoent *, char *, size_t, struct protoent **);
234struct servent	*getservbyname(const char *, const char *);
235struct servent	*getservbyport(int, const char *);
236struct servent	*getservent(void);
237void herror(const char *);
238const char	*hstrerror(int);
239int innetgr(const char *, const char *, const char *, const char *);
240void sethostent(int);
241void setnetent(int);
242void setprotoent(int);
243int getaddrinfo(const char *, const char *, const struct addrinfo *, struct addrinfo **);
244int getnameinfo(const struct sockaddr *, socklen_t, char *, size_t, char *, size_t, int);
245void freeaddrinfo(struct addrinfo *);
246const char	*gai_strerror(int);
247void setnetgrent(const char *);
248void setservent(int);
249
250#pragma GCC visibility pop
251__END_DECLS
252
253#endif /* !_NETDB_H_ */
254