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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * Common code and structures used by name-service-switch "dns" backends. 29 */ 30 31 #ifndef _DNS_COMMON_H 32 #define _DNS_COMMON_H 33 34 #pragma ident "%Z%%M% %I% %E% SMI" 35 36 #include <stdio.h> 37 #include <ctype.h> 38 #include <sys/types.h> 39 #include <sys/socket.h> 40 #include <netinet/in.h> 41 #include <netdb.h> 42 #include <strings.h> 43 #include <thread.h> 44 #include <arpa/inet.h> 45 #include <arpa/nameser.h> 46 #include <resolv.h> 47 #include <syslog.h> 48 #include <nsswitch.h> 49 #include <nss_common.h> 50 #include <nss_dbdefs.h> 51 #include <stdlib.h> 52 #include <signal.h> 53 54 #ifdef __cplusplus 55 extern "C" { 56 #endif 57 58 typedef struct dns_backend *dns_backend_ptr_t; 59 typedef nss_status_t (*dns_backend_op_t)(dns_backend_ptr_t, void *); 60 61 struct dns_backend { 62 dns_backend_op_t *ops; 63 nss_dbop_t n_ops; 64 }; 65 66 /* multithreaded libresolv2 related functions and variables */ 67 extern void (*set_no_hosts_fallback)(void); 68 extern void (*unset_no_hosts_fallback)(void); 69 extern struct __res_state *(*set_res_retry)(); 70 extern int (*enable_mt)(); 71 extern int (*disable_mt)(); 72 extern int *(*get_h_errno)(); 73 extern int (*override_retry)(int); 74 extern void switch_resolver_setup(int *, sigset_t *, int *); 75 extern void switch_resolver_reset(int, sigset_t, int); 76 extern mutex_t one_lane; 77 78 extern int ent2result(struct hostent *, nss_XbyY_args_t *, int); 79 extern int ent2str(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 nss_status_t _nss_dns_gethost_withttl(void *buf, size_t bufsize, int ipnode); 85 nss_status_t _nss_get_dns_hosts_name(dns_backend_ptr_t *, void **, size_t *); 86 nss_status_t _nss_get_dns_ipnodes_name(dns_backend_ptr_t *, void **, size_t *); 87 88 #ifdef __cplusplus 89 } 90 #endif 91 92 #endif /* _DNS_COMMON_H */ 93