/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* This file defines and implements the re-entrant enumeration routines for
* hosts: sethostent(), gethostent_r(), and endhostent(). They consult
* the switch policy directly and do not "share" their enumeration state
* nor the stayopen flag with the implentation of the more commonly used
* gethostbyname_r()/gethostbyaddr_r(). The latter follows a tortuous
* route in order to be consistent with netdir_getbyYY() (see
* gethostbyname_r.c and netdir_inet.c).
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "mt.h"
#include <sys/socket.h>
#include <sys/types.h>
#include <nss_dbdefs.h>
#include "nss.h"
/*
* str2hostent() is now a wrapper to __str2hostent().
* __str2hostent() now takes an extra argument to specify the
* AF_INET type for address parsing.
*/
int
str2hostent(const char *instr, int lenstr, void *ent, char *buffer, int buflen)
{
return (__str2hostent(AF_INET, instr, lenstr, ent, buffer, buflen));
}
static int hosts_stayopen;
/*
* Unsynchronized, but it affects only
* efficiency, not correctness
*/
static DEFINE_NSS_DB_ROOT(db_root);
static DEFINE_NSS_GETENT(context);
void
_nss_initf_hosts(nss_db_params_t *p)
{
p->name = NSS_DBNAM_HOSTS;
p->default_config = NSS_DEFCONF_HOSTS;
}
int
sethostent(int stay)
{
hosts_stayopen |= stay;
nss_setent(&db_root, _nss_initf_hosts, &context);
return (0);
}
int
endhostent(void)
{
hosts_stayopen = 0;
nss_endent(&db_root, _nss_initf_hosts, &context);
nss_delete(&db_root);
return (0);
}
struct hostent *
gethostent_r(struct hostent *result, char *buffer, int buflen, int *h_errnop)
{
nss_XbyY_args_t arg;
nss_status_t res;
NSS_XbyY_INIT(&arg, result, buffer, buflen, str2hostent);
res = nss_getent(&db_root, _nss_initf_hosts,
&context, &arg);
arg.status = res;
*h_errnop = arg.h_errno;
return ((struct hostent *)NSS_XbyY_FINI(&arg));
}