1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 1991-2002 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate * 26*0Sstevel@tonic-gate * lib/libnsl/nss/gethostent_r.c 27*0Sstevel@tonic-gate * 28*0Sstevel@tonic-gate * This file defines and implements the re-entrant enumeration routines for 29*0Sstevel@tonic-gate * hosts: sethostent(), gethostent_r(), and endhostent(). They consult 30*0Sstevel@tonic-gate * the switch policy directly and do not "share" their enumeration state 31*0Sstevel@tonic-gate * nor the stayopen flag with the implentation of the more commonly used 32*0Sstevel@tonic-gate * gethostbyname_r()/gethostbyaddr_r(). The latter follows a tortuous 33*0Sstevel@tonic-gate * route in order to be consistent with netdir_getbyYY() (see 34*0Sstevel@tonic-gate * gethostbyname_r.c and netdir_inet.c). 35*0Sstevel@tonic-gate */ 36*0Sstevel@tonic-gate 37*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate #include <sys/socket.h> 40*0Sstevel@tonic-gate #include <sys/types.h> 41*0Sstevel@tonic-gate #include <nss_dbdefs.h> 42*0Sstevel@tonic-gate #include <rpc/trace.h> 43*0Sstevel@tonic-gate #include "nss.h" 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate /* 46*0Sstevel@tonic-gate * str2hostent() is now a wrapper to __str2hostent(). 47*0Sstevel@tonic-gate * __str2hostent() now takes an extra argument to specify the 48*0Sstevel@tonic-gate * AF_INET type for address parsing. 49*0Sstevel@tonic-gate */ 50*0Sstevel@tonic-gate int 51*0Sstevel@tonic-gate str2hostent(const char *instr, int lenstr, void *ent, char *buffer, int buflen) 52*0Sstevel@tonic-gate { 53*0Sstevel@tonic-gate return (__str2hostent(AF_INET, instr, lenstr, ent, buffer, buflen)); 54*0Sstevel@tonic-gate } 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate static int hosts_stayopen; 57*0Sstevel@tonic-gate /* 58*0Sstevel@tonic-gate * Unsynchronized, but it affects only 59*0Sstevel@tonic-gate * efficiency, not correctness 60*0Sstevel@tonic-gate */ 61*0Sstevel@tonic-gate 62*0Sstevel@tonic-gate static DEFINE_NSS_DB_ROOT(db_root); 63*0Sstevel@tonic-gate static DEFINE_NSS_GETENT(context); 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate void 66*0Sstevel@tonic-gate _nss_initf_hosts(nss_db_params_t *p) 67*0Sstevel@tonic-gate { 68*0Sstevel@tonic-gate trace1(TR__nss_initf_hosts, 0); 69*0Sstevel@tonic-gate p->name = NSS_DBNAM_HOSTS; 70*0Sstevel@tonic-gate p->default_config = NSS_DEFCONF_HOSTS; 71*0Sstevel@tonic-gate trace1(TR__nss_initf_hosts, 1); 72*0Sstevel@tonic-gate } 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate int 75*0Sstevel@tonic-gate sethostent(int stay) 76*0Sstevel@tonic-gate { 77*0Sstevel@tonic-gate trace1(TR_sethostent, 0); 78*0Sstevel@tonic-gate hosts_stayopen |= stay; 79*0Sstevel@tonic-gate nss_setent(&db_root, _nss_initf_hosts, &context); 80*0Sstevel@tonic-gate trace1(TR_sethostent, 0); 81*0Sstevel@tonic-gate return (0); 82*0Sstevel@tonic-gate } 83*0Sstevel@tonic-gate 84*0Sstevel@tonic-gate int 85*0Sstevel@tonic-gate endhostent(void) 86*0Sstevel@tonic-gate { 87*0Sstevel@tonic-gate trace1(TR_endhostent, 0); 88*0Sstevel@tonic-gate hosts_stayopen = 0; 89*0Sstevel@tonic-gate nss_endent(&db_root, _nss_initf_hosts, &context); 90*0Sstevel@tonic-gate nss_delete(&db_root); 91*0Sstevel@tonic-gate trace1(TR_endhostent, 0); 92*0Sstevel@tonic-gate return (0); 93*0Sstevel@tonic-gate } 94*0Sstevel@tonic-gate 95*0Sstevel@tonic-gate struct hostent * 96*0Sstevel@tonic-gate gethostent_r(struct hostent *result, char *buffer, int buflen, int *h_errnop) 97*0Sstevel@tonic-gate { 98*0Sstevel@tonic-gate nss_XbyY_args_t arg; 99*0Sstevel@tonic-gate nss_status_t res; 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate trace2(TR_gethostbyent_r, 0, buflen); 102*0Sstevel@tonic-gate NSS_XbyY_INIT(&arg, result, buffer, buflen, str2hostent); 103*0Sstevel@tonic-gate res = nss_getent(&db_root, _nss_initf_hosts, 104*0Sstevel@tonic-gate &context, &arg); 105*0Sstevel@tonic-gate arg.status = res; 106*0Sstevel@tonic-gate *h_errnop = arg.h_errno; 107*0Sstevel@tonic-gate trace2(TR_gethostbyent_r, 1, buflen); 108*0Sstevel@tonic-gate return ((struct hostent *)NSS_XbyY_FINI(&arg)); 109*0Sstevel@tonic-gate } 110