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 /* 24 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 * 27 * lib/libnsl/nss/gethostent6.c 28 * 29 * This file defines and implements the re-entrant enumeration routines for 30 * IPv6 hosts: sethostent6(), gethostent6(), and endhostent6(). 31 * They consult the switch policy directly and do not "share" their 32 * enumeration state nor the stayopen flag with the implentation of the 33 * more commonly used getipnodebyname()/getipnodebyaddr(). The latter 34 * follows a tortuous route in order to be consistent with netdir_getbyYY() 35 * (see getipnodebyname.c and netdir_inet.c). 36 */ 37 38 #pragma ident "%Z%%M% %I% %E% SMI" 39 40 #include <sys/socket.h> 41 #include <sys/types.h> 42 #include <nss_dbdefs.h> 43 #include "nss.h" 44 45 static int ipnodes_stayopen; 46 /* 47 * Unsynchronized, but it affects only 48 * efficiency, not correctness 49 */ 50 51 static DEFINE_NSS_DB_ROOT(db_root); 52 static DEFINE_NSS_GETENT(context); 53 54 /* IPv6 wrapper for __str2hostent() */ 55 int 56 str2hostent6(const char *instr, int lenstr, void *ent, char *buffer, int buflen) 57 { 58 return (__str2hostent(AF_INET6, instr, lenstr, ent, buffer, buflen)); 59 } 60 61 void 62 _nss_initf_ipnodes(nss_db_params_t *p) 63 { 64 p->name = NSS_DBNAM_IPNODES; 65 p->default_config = NSS_DEFCONF_IPNODES; 66 } 67 68 int 69 __sethostent6(int stay) 70 { 71 ipnodes_stayopen |= stay; 72 nss_setent(&db_root, _nss_initf_ipnodes, &context); 73 return (0); 74 } 75 76 int 77 __endhostent6(void) 78 { 79 ipnodes_stayopen = 0; 80 nss_endent(&db_root, _nss_initf_ipnodes, &context); 81 nss_delete(&db_root); 82 return (0); 83 } 84 85 struct hostent * 86 __gethostent6(struct hostent *result, char *buffer, int buflen, int *h_errnop) 87 { 88 nss_XbyY_args_t arg; 89 nss_status_t res; 90 91 NSS_XbyY_INIT(&arg, result, buffer, buflen, str2hostent6); 92 res = nss_getent(&db_root, _nss_initf_ipnodes, 93 &context, &arg); 94 arg.status = res; 95 *h_errnop = arg.h_errno; 96 return ((struct hostent *)NSS_XbyY_FINI(&arg)); 97 } 98