17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
57c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
67c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
77c478bd9Sstevel@tonic-gate  * with the License.
87c478bd9Sstevel@tonic-gate  *
97c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
117c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
127c478bd9Sstevel@tonic-gate  * and limitations under the License.
137c478bd9Sstevel@tonic-gate  *
147c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
157c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
177c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
187c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bd9Sstevel@tonic-gate  *
207c478bd9Sstevel@tonic-gate  * CDDL HEADER END
217c478bd9Sstevel@tonic-gate  */
2261961e0fSrobinson 
237c478bd9Sstevel@tonic-gate /*
24*e8031f0aSraf  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
257c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
26*e8031f0aSraf  */
27*e8031f0aSraf 
28*e8031f0aSraf /*
297c478bd9Sstevel@tonic-gate  * This file defines and implements the re-entrant enumeration routines for
307c478bd9Sstevel@tonic-gate  *   hosts: sethostent(), gethostent_r(), and endhostent(). They consult
317c478bd9Sstevel@tonic-gate  *   the switch policy directly and do not "share" their enumeration state
327c478bd9Sstevel@tonic-gate  *   nor the stayopen flag with the implentation of the more commonly used
337c478bd9Sstevel@tonic-gate  *   gethostbyname_r()/gethostbyaddr_r(). The latter follows a tortuous
347c478bd9Sstevel@tonic-gate  *   route in order to be consistent with netdir_getbyYY() (see
357c478bd9Sstevel@tonic-gate  *   gethostbyname_r.c and netdir_inet.c).
367c478bd9Sstevel@tonic-gate  */
377c478bd9Sstevel@tonic-gate 
387c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
397c478bd9Sstevel@tonic-gate 
40*e8031f0aSraf #include "mt.h"
417c478bd9Sstevel@tonic-gate #include <sys/socket.h>
427c478bd9Sstevel@tonic-gate #include <sys/types.h>
437c478bd9Sstevel@tonic-gate #include <nss_dbdefs.h>
447c478bd9Sstevel@tonic-gate #include "nss.h"
457c478bd9Sstevel@tonic-gate 
467c478bd9Sstevel@tonic-gate /*
477c478bd9Sstevel@tonic-gate  * str2hostent() is now a wrapper to __str2hostent().
487c478bd9Sstevel@tonic-gate  * __str2hostent() now takes an extra argument to specify the
497c478bd9Sstevel@tonic-gate  * AF_INET type for address parsing.
507c478bd9Sstevel@tonic-gate  */
517c478bd9Sstevel@tonic-gate int
str2hostent(const char * instr,int lenstr,void * ent,char * buffer,int buflen)527c478bd9Sstevel@tonic-gate str2hostent(const char *instr, int lenstr, void *ent, char *buffer, int buflen)
537c478bd9Sstevel@tonic-gate {
547c478bd9Sstevel@tonic-gate 	return (__str2hostent(AF_INET, instr, lenstr, ent, buffer, buflen));
557c478bd9Sstevel@tonic-gate }
567c478bd9Sstevel@tonic-gate 
577c478bd9Sstevel@tonic-gate static int hosts_stayopen;
587c478bd9Sstevel@tonic-gate /*
597c478bd9Sstevel@tonic-gate  * Unsynchronized, but it affects only
607c478bd9Sstevel@tonic-gate  * efficiency, not correctness
617c478bd9Sstevel@tonic-gate  */
627c478bd9Sstevel@tonic-gate 
637c478bd9Sstevel@tonic-gate static DEFINE_NSS_DB_ROOT(db_root);
647c478bd9Sstevel@tonic-gate static DEFINE_NSS_GETENT(context);
657c478bd9Sstevel@tonic-gate 
667c478bd9Sstevel@tonic-gate void
_nss_initf_hosts(nss_db_params_t * p)677c478bd9Sstevel@tonic-gate _nss_initf_hosts(nss_db_params_t *p)
687c478bd9Sstevel@tonic-gate {
697c478bd9Sstevel@tonic-gate 	p->name	= NSS_DBNAM_HOSTS;
707c478bd9Sstevel@tonic-gate 	p->default_config = NSS_DEFCONF_HOSTS;
717c478bd9Sstevel@tonic-gate }
727c478bd9Sstevel@tonic-gate 
737c478bd9Sstevel@tonic-gate int
sethostent(int stay)747c478bd9Sstevel@tonic-gate sethostent(int stay)
757c478bd9Sstevel@tonic-gate {
767c478bd9Sstevel@tonic-gate 	hosts_stayopen |= stay;
777c478bd9Sstevel@tonic-gate 	nss_setent(&db_root, _nss_initf_hosts, &context);
787c478bd9Sstevel@tonic-gate 	return (0);
797c478bd9Sstevel@tonic-gate }
807c478bd9Sstevel@tonic-gate 
817c478bd9Sstevel@tonic-gate int
endhostent(void)827c478bd9Sstevel@tonic-gate endhostent(void)
837c478bd9Sstevel@tonic-gate {
847c478bd9Sstevel@tonic-gate 	hosts_stayopen = 0;
857c478bd9Sstevel@tonic-gate 	nss_endent(&db_root, _nss_initf_hosts, &context);
867c478bd9Sstevel@tonic-gate 	nss_delete(&db_root);
877c478bd9Sstevel@tonic-gate 	return (0);
887c478bd9Sstevel@tonic-gate }
897c478bd9Sstevel@tonic-gate 
907c478bd9Sstevel@tonic-gate struct hostent *
gethostent_r(struct hostent * result,char * buffer,int buflen,int * h_errnop)917c478bd9Sstevel@tonic-gate gethostent_r(struct hostent *result, char *buffer, int buflen, int *h_errnop)
927c478bd9Sstevel@tonic-gate {
937c478bd9Sstevel@tonic-gate 	nss_XbyY_args_t arg;
947c478bd9Sstevel@tonic-gate 	nss_status_t	res;
957c478bd9Sstevel@tonic-gate 
967c478bd9Sstevel@tonic-gate 	NSS_XbyY_INIT(&arg, result, buffer, buflen, str2hostent);
977c478bd9Sstevel@tonic-gate 	res = nss_getent(&db_root, _nss_initf_hosts,
987c478bd9Sstevel@tonic-gate 	    &context, &arg);
997c478bd9Sstevel@tonic-gate 	arg.status = res;
1007c478bd9Sstevel@tonic-gate 	*h_errnop = arg.h_errno;
1017c478bd9Sstevel@tonic-gate 	return ((struct hostent *)NSS_XbyY_FINI(&arg));
1027c478bd9Sstevel@tonic-gate }
103