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 2006 Sun Microsystems, Inc.  All rights reserved.
25 * Use is subject to license terms.
26 */
27
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 "mt.h"
41#include <sys/socket.h>
42#include <sys/types.h>
43#include <nss_dbdefs.h>
44#include "nss.h"
45
46static int ipnodes_stayopen;
47/*
48 * Unsynchronized, but it affects only
49 * efficiency, not correctness
50 */
51
52static DEFINE_NSS_DB_ROOT(db_root);
53static DEFINE_NSS_GETENT(context);
54
55/* IPv6 wrapper for __str2hostent() */
56int
57str2hostent6(const char *instr, int lenstr, void *ent, char *buffer, int buflen)
58{
59	return (__str2hostent(AF_INET6, instr, lenstr, ent, buffer, buflen));
60}
61
62void
63_nss_initf_ipnodes(nss_db_params_t *p)
64{
65	p->name	= NSS_DBNAM_IPNODES;
66	p->default_config = NSS_DEFCONF_IPNODES;
67}
68
69int
70__sethostent6(int stay)
71{
72	ipnodes_stayopen |= stay;
73	nss_setent(&db_root, _nss_initf_ipnodes, &context);
74	return (0);
75}
76
77int
78__endhostent6(void)
79{
80	ipnodes_stayopen = 0;
81	nss_endent(&db_root, _nss_initf_ipnodes, &context);
82	nss_delete(&db_root);
83	return (0);
84}
85
86struct hostent *
87__gethostent6(struct hostent *result, char *buffer, int buflen, int *h_errnop)
88{
89	nss_XbyY_args_t arg;
90	nss_status_t	res;
91
92	NSS_XbyY_INIT(&arg, result, buffer, buflen, str2hostent6);
93	res = nss_getent(&db_root, _nss_initf_ipnodes,
94	    &context, &arg);
95	arg.status = res;
96	*h_errnop = arg.h_errno;
97	return ((struct hostent *)NSS_XbyY_FINI(&arg));
98}
99