2 * Copyright (c) 1980, 1983, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
34 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
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.
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
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 $
64 #include <sys/cdefs.h>
65 #include <sys/_types.h>
67 #ifndef _SIZE_T_DECLARED
68 typedef __size_t size_t;
69 #define _SIZE_T_DECLARED
72 #ifndef _SOCKLEN_T_DECLARED
73 typedef __socklen_t socklen_t;
74 #define _SOCKLEN_T_DECLARED
77 #ifndef _UINT32_T_DECLARED
78 typedef __uint32_t uint32_t;
79 #define _UINT32_T_DECLARED
83 # define _PATH_HEQUIV "/etc/hosts.equiv"
85 #define _PATH_HOSTS "/etc/hosts"
86 #define _PATH_NETWORKS "/etc/networks"
87 #define _PATH_PROTOCOLS "/etc/protocols"
88 #define _PATH_SERVICES "/etc/services"
89 #define _PATH_SERVICES_DB "/var/db/services.db"
91 #define h_errno (*__h_errno())
94 * Structures returned by network data base library. All addresses are
95 * supplied in host order, and returned in network order (suitable for
96 * use in system calls).
99 char *h_name; /* official name of host */
100 char **h_aliases; /* alias list */
101 int h_addrtype; /* host address type */
102 int h_length; /* length of address */
103 char **h_addr_list; /* list of addresses from name server */
104 #define h_addr h_addr_list[0] /* address, for backward compatibility */
108 char *n_name; /* official name of net */
109 char **n_aliases; /* alias list */
110 int n_addrtype; /* net address type */
111 uint32_t n_net; /* network # */
115 char *s_name; /* official service name */
116 char **s_aliases; /* alias list */
117 int s_port; /* port # */
118 char *s_proto; /* protocol to use */
122 char *p_name; /* official protocol name */
123 char **p_aliases; /* alias list */
124 int p_proto; /* protocol # */
128 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
129 int ai_family; /* PF_xxx */
130 int ai_socktype; /* SOCK_xxx */
131 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
132 socklen_t ai_addrlen; /* length of ai_addr */
133 char *ai_canonname; /* canonical name for hostname */
134 struct sockaddr *ai_addr; /* binary address */
135 struct addrinfo *ai_next; /* next structure in linked list */
139 * Error return codes from gethostbyname() and gethostbyaddr()
143 #define NETDB_INTERNAL -1 /* see errno */
144 #define NETDB_SUCCESS 0 /* no problem */
145 #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
146 #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */
147 #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
148 #define NO_DATA 4 /* Valid name, no data record of requested type */
149 #define NO_ADDRESS NO_DATA /* no address, look for MX record */
152 * Error return codes from getaddrinfo()
156 #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
158 #define EAI_AGAIN 2 /* temporary failure in name resolution */
159 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */
160 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */
161 #define EAI_FAMILY 5 /* ai_family not supported */
162 #define EAI_MEMORY 6 /* memory allocation failure */
165 #define EAI_NODATA 7 /* no address associated with hostname */
167 #define EAI_NONAME 8 /* hostname nor servname provided, or not known */
168 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */
169 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */
170 #define EAI_SYSTEM 11 /* system error returned in errno */
171 #define EAI_BADHINTS 12 /* invalid value for hints */
172 #define EAI_PROTOCOL 13 /* resolved protocol is unknown */
173 #define EAI_OVERFLOW 14 /* argument buffer overflow */
177 * Flag values for getaddrinfo()
179 #define AI_PASSIVE 0x00000001 /* get address to use bind() */
180 #define AI_CANONNAME 0x00000002 /* fill ai_canonname */
181 #define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */
182 #define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */
183 /* valid flags for addrinfo (not a standard def, apps should not use it) */
185 (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \
188 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
189 #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
190 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */
191 #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */
192 /* special recommended flags for getipnodebyname */
193 #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG)
196 * Constants for getnameinfo()
198 #define NI_MAXHOST 1025
199 #define NI_MAXSERV 32
202 * Flag values for getnameinfo()
204 #define NI_NOFQDN 0x00000001
205 #define NI_NUMERICHOST 0x00000002
206 #define NI_NAMEREQD 0x00000004
207 #define NI_NUMERICSERV 0x00000008
208 #define NI_DGRAM 0x00000010
210 #define NI_WITHSCOPEID 0x00000020
214 * Scope delimit character
216 #define SCOPE_DELIMITER '%'
219 void endhostent(void);
220 void endnetent(void);
221 void endprotoent(void);
222 void endservent(void);
223 #if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE <= 200112)
224 struct hostent *gethostbyaddr(const void *, socklen_t, int);
225 struct hostent *gethostbyname(const char *);
227 struct hostent *gethostent(void);
228 struct netent *getnetbyaddr(uint32_t, int);
229 struct netent *getnetbyname(const char *);
230 struct netent *getnetent(void);
231 struct protoent *getprotobyname(const char *);
232 struct protoent *getprotobynumber(int);
233 struct protoent *getprotoent(void);
234 struct servent *getservbyname(const char *, const char *);
235 struct servent *getservbyport(int, const char *);
236 struct servent *getservent(void);
237 void sethostent(int);
238 /* void sethostfile(const char *); */
240 void setprotoent(int);
241 int getaddrinfo(const char *, const char *,
242 const struct addrinfo *, struct addrinfo **);
243 int getnameinfo(const struct sockaddr *, socklen_t, char *,
244 size_t, char *, size_t, int);
245 void freeaddrinfo(struct addrinfo *);
246 const char *gai_strerror(int);
247 void setservent(int);
250 void endnetgrent(void);
251 void freehostent(struct hostent *);
252 int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *,
253 char *, size_t, struct hostent **, int *);
254 int gethostbyname_r(const char *, struct hostent *, char *, size_t,
255 struct hostent **, int *);
256 struct hostent *gethostbyname2(const char *, int);
257 int gethostbyname2_r(const char *, int, struct hostent *, char *,
258 size_t, struct hostent **, int *);
259 int gethostent_r(struct hostent *, char *, size_t,
260 struct hostent **, int *);
261 struct hostent *getipnodebyaddr(const void *, size_t, int, int *);
262 struct hostent *getipnodebyname(const char *, int, int, int *);
263 int getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t,
264 struct netent**, int *);
265 int getnetbyname_r(const char *, struct netent *, char *, size_t,
266 struct netent **, int *);
267 int getnetent_r(struct netent *, char *, size_t, struct netent **,
269 int getnetgrent(char **, char **, char **);
270 int getprotobyname_r(const char *, struct protoent *, char *,
271 size_t, struct protoent **);
272 int getprotobynumber_r(int, struct protoent *, char *, size_t,
274 int getprotoent_r(struct protoent *, char *, size_t,
276 int getservbyname_r(const char *, const char *, struct servent *,
277 char *, size_t, struct servent **);
278 int getservbyport_r(int, const char *, struct servent *, char *,
279 size_t, struct servent **);
280 int getservent_r(struct servent *, char *, size_t,
282 void herror(const char *);
283 __const char *hstrerror(int);
284 int innetgr(const char *, const char *, const char *, const char *);
285 void setnetgrent(const char *);
290 * PRIVATE functions specific to the FreeBSD implementation
293 /* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */
294 int * __h_errno(void);
297 #endif /* !_NETDB_H_ */