xref: /titanic_41/usr/src/lib/nsswitch/dns/common/dns_common.h (revision 70025d765b044c6d8594bb965a2247a61e991a99)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright (c) 1993, 1998-1999 by Sun Microsystems, Inc.
24  * All rights reserved.
25  *
26  * Common code and structures used by name-service-switch "dns" backends.
27  */
28 
29 #ifndef _DNS_COMMON_H
30 #define	_DNS_COMMON_H
31 
32 #pragma ident	"%Z%%M%	%I%	%E% SMI"
33 
34 #include <stdio.h>
35 #include <ctype.h>
36 #include <sys/types.h>
37 #include <sys/socket.h>
38 #include <netinet/in.h>
39 #include <netdb.h>
40 #include <strings.h>
41 #include <thread.h>
42 #include <arpa/nameser.h>
43 #include <resolv.h>
44 #include <syslog.h>
45 #include <nsswitch.h>
46 #include <nss_dbdefs.h>
47 #include <stdlib.h>
48 #include <signal.h>
49 
50 #ifdef	__cplusplus
51 extern "C" {
52 #endif
53 
54 typedef struct dns_backend *dns_backend_ptr_t;
55 typedef nss_status_t (*dns_backend_op_t)(dns_backend_ptr_t, void *);
56 
57 struct dns_backend {
58 	dns_backend_op_t	*ops;
59 	nss_dbop_t		n_ops;
60 };
61 
62 /* multithreaded libresolv2 related functions and variables */
63 extern void	(*set_no_hosts_fallback)(void);
64 extern void	(*unset_no_hosts_fallback)(void);
65 extern struct __res_state	*(*set_res_retry)();
66 extern int	(*enable_mt)();
67 extern int	(*disable_mt)();
68 extern int	*(*get_h_errno)();
69 extern int	(*override_retry)(int);
70 extern void	switch_resolver_setup(int *, sigset_t *, int *);
71 extern void	switch_resolver_reset(int, sigset_t, int);
72 extern mutex_t	one_lane;
73 
74 extern int _thr_sigsetmask(int, const sigset_t *, sigset_t *);
75 extern int _mutex_lock(mutex_t *);
76 extern int _mutex_unlock(mutex_t *);
77 extern const char *inet_ntop(int, const void *, char *, size_t);
78 
79 extern int ent2result(struct hostent *, nss_XbyY_args_t *, int);
80 
81 nss_backend_t *_nss_dns_constr(dns_backend_op_t *, int);
82 extern	nss_status_t _herrno2nss(int);
83 
84 #ifdef	__cplusplus
85 }
86 #endif
87 
88 #endif /* _DNS_COMMON_H */
89