dns_common.h revision 7257d1b4d25bfac0c802847390e98a464fd787ac
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Common code and structures used by name-service-switch "dns" backends.
*/
#ifndef _DNS_COMMON_H
#define _DNS_COMMON_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <strings.h>
#include <thread.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include <resolv.h>
#include <syslog.h>
#include <nsswitch.h>
#include <nss_common.h>
#include <nss_dbdefs.h>
#include <stdlib.h>
#include <signal.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct dns_backend *dns_backend_ptr_t;
typedef nss_status_t (*dns_backend_op_t)(dns_backend_ptr_t, void *);
struct dns_backend {
dns_backend_op_t *ops;
nss_dbop_t n_ops;
};
/* multithreaded libresolv2 related functions and variables */
extern void (*set_no_hosts_fallback)(void);
extern void (*unset_no_hosts_fallback)(void);
extern struct __res_state *(*set_res_retry)();
extern int (*enable_mt)();
extern int (*disable_mt)();
extern int *(*get_h_errno)();
extern int (*override_retry)(int);
extern void switch_resolver_setup(int *, sigset_t *, int *);
extern void switch_resolver_reset(int, sigset_t, int);
extern mutex_t one_lane;
extern int ent2result(struct hostent *, nss_XbyY_args_t *, int);
extern int ent2str(struct hostent *, nss_XbyY_args_t *, int);
nss_backend_t *_nss_dns_constr(dns_backend_op_t *, int);
extern nss_status_t _herrno2nss(int);
nss_status_t _nss_dns_gethost_withttl(void *buf, size_t bufsize, int ipnode);
nss_status_t _nss_get_dns_hosts_name(dns_backend_ptr_t *, void **, size_t *);
nss_status_t _nss_get_dns_ipnodes_name(dns_backend_ptr_t *, void **, size_t *);
#ifdef __cplusplus
}
#endif
#endif /* _DNS_COMMON_H */