netdb_private.h revision 157779 
1/*-
2 * Copyright (C) 2005 The FreeBSD Project.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD: head/lib/libc/net/netdb_private.h 157779 2006-04-15 16:20:27Z ume $
26 */
27
28#ifndef _NETDB_PRIVATE_H_
29#define _NETDB_PRIVATE_H_
30
31#include <stdio.h>				/* XXX: for FILE */
32
33#define	NETDB_THREAD_ALLOC(name)					\
34static struct name name;						\
35static thread_key_t name##_key;						\
36static once_t name##_init_once = ONCE_INITIALIZER;			\
37static int name##_thr_keycreated = 0;					\
38\
39static void name##_free(void *);					\
40\
41static void								\
42name##_keycreate(void)							\
43{									\
44	name##_thr_keycreated =						\
45	    (thr_keycreate(&name##_key, name##_free) == 0);		\
46}									\
47\
48struct name *								\
49__##name##_init(void)							\
50{									\
51	struct name *he;						\
52									\
53	if (thr_main() != 0)						\
54		return (&name);						\
55	if (thr_once(&name##_init_once, name##_keycreate) != 0 ||	\
56	    !name##_thr_keycreated)					\
57		return (NULL);						\
58	if ((he = thr_getspecific(name##_key)) != NULL)			\
59		return (he);						\
60	if ((he = calloc(1, sizeof(*he))) == NULL)			\
61		return (NULL);						\
62	if (thr_setspecific(name##_key, he) == 0)			\
63		return (he);						\
64	free(he);							\
65	return (NULL);							\
66}
67
68#define	_MAXALIASES	35
69#define	_MAXLINELEN	1024
70#define	_MAXADDRS	35
71#define	_HOSTBUFSIZE	(8 * 1024)
72#define	_NETBUFSIZE	1025
73
74struct hostent_data {
75	uint32_t host_addr[4];			/* IPv4 or IPv6 */
76	char *h_addr_ptrs[_MAXADDRS + 1];
77	char *host_aliases[_MAXALIASES];
78	char hostbuf[_HOSTBUFSIZE];
79	FILE *hostf;
80	int stayopen;
81#ifdef YP
82	char *yp_domain;
83#endif
84};
85
86struct netent_data {
87	char *net_aliases[_MAXALIASES];
88	char netbuf[_NETBUFSIZE];
89	FILE *netf;
90	int stayopen;
91#ifdef YP
92	char *yp_domain;
93#endif
94};
95
96struct protoent_data {
97	FILE *fp;
98	char *aliases[_MAXALIASES];
99	int stayopen;
100	char line[_MAXLINELEN + 1];
101};
102
103struct servent_data {
104	FILE *fp;
105	char *aliases[_MAXALIASES];
106	int stayopen;
107	char line[_MAXLINELEN + 1];
108#ifdef YP
109	int yp_stepping;
110	char *yp_name;
111	char *yp_proto;
112	int yp_port;
113	char *yp_domain;
114	char *yp_key;
115	int yp_keylen;
116#endif
117};
118
119struct hostdata {
120	struct hostent host;
121	char data[sizeof(struct hostent_data)];
122};
123
124struct netdata {
125	struct netent net;
126	char data[sizeof(struct netent_data)];
127};
128
129struct protodata {
130	struct protoent proto;
131	char data[sizeof(struct protoent_data)];
132};
133
134struct servdata {
135	struct servent serv;
136	char data[sizeof(struct servent_data)];
137};
138
139struct hostdata *__hostdata_init(void);
140struct hostent *__hostent_init(void);
141struct hostent_data *__hostent_data_init(void);
142struct netdata *__netdata_init(void);
143struct netent_data *__netent_data_init(void);
144struct protodata *__protodata_init(void);
145struct protoent_data *__protoent_data_init(void);
146struct servdata *__servdata_init(void);
147struct servent_data *__servent_data_init(void);
148int __copy_hostent(struct hostent *, struct hostent *, char *, size_t);
149int __copy_netent(struct netent *, struct netent *, char *, size_t);
150int __copy_protoent(struct protoent *, struct protoent *, char *, size_t);
151int __copy_servent(struct servent *, struct servent *, char *, size_t);
152
153void __endprotoent_p(struct protoent_data *);
154void __endservent_p(struct servent_data *);
155int __getprotoent_p(struct protoent *, struct protoent_data *);
156int __getservent_p(struct servent *, struct servent_data *);
157void __setprotoent_p(int, struct protoent_data *);
158void __setservent_p(int, struct servent_data *);
159void _endhostdnsent(void);
160void _endhosthtent(struct hostent_data *);
161void _endnetdnsent(void);
162void _endnethtent(struct netent_data *);
163struct hostent *_gethostbynisaddr(const char *, int, int);
164struct hostent *_gethostbynisname(const char *, int);
165void _map_v4v6_address(const char *, char *);
166void _map_v4v6_hostent(struct hostent *, char **, char *);
167void _sethostdnsent(int);
168void _sethosthtent(int, struct hostent_data *);
169void _setnetdnsent(int);
170void _setnethtent(int, struct netent_data *);
171
172#endif /* _NETDB_PRIVATE_H_ */
173