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/*
* 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 (c) 2001 by Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <poll.h>
#include <sys/time.h>
#include <stdlib.h>
#include "nis_ldap.h"
#include "nis_hashitem.h"
#include "ldap_map.h"
#include "ldap_parse.h"
/*
* Global structure keeping config state. Since it's created and modified
* while the rpc.nisd still is single-threaded, and only read in MT mode,
* no locking is needed.
*/
__nis_config_t ldapConfig = {
ini_none, /* nisplusLDAPinitialUpdate */
pass_error, /* nisplusLDAPthreadCreationError */
{
-1, /* Try forever */
15 /* 15 second timeout */
},
de_retry, /* nisplusLDAPdumpError */
{
-1, /* Try forever */
200 /* 200 second timeout */
},
directory_locked, /* nisplusLDAPresyncService */
accumulate, /* nisplusLDAPupdateBatching */
{
-1, /* Not used */
120 /* Accumulate for 120 seconds */
},
block /* nisplusLDAPexclusiveWaitMOde */
};
/*
* Utility function that accepts a (__nisdb_retry_t *), decrements the
* 'attempts' counter, and sleeps for 'timeout' seconds.
*
* NOTE: Don't pass a pointer into the 'ldapConfig' structure to
* this function. Instead, initialize a private copy to the
* value from 'ldapConfig'.
*
* The value of 'attempts' upon entry determines action as follows:
*
* < 0 Don't change 'attempts', sleep as indicated, return 1
*
* 0 Don't change 'attempts', only sleep if forceSleep is set,
* return 0 if we didn't sleep, 1 if we slept.
*
* > 0 Decrement 'attempts', sleep as indicated, return 1
*/
int
__nis_retry_sleep(__nisdb_retry_t *retry, int forceSleep) {
if (retry == NULL)
return (0);
if (retry->attempts > 0) {
retry->attempts -= 1;
} else if (retry->attempts == 0 && !forceSleep) {
return (0);
}
(void) poll(NULL, 0, retry->timeout*1000);
return (1);
}
/*
* The root directory is special in NIS+; it's the only directory that
* doesn't appear as an entry in another directory. Hence, our method
* of keeping the directory/table entry expiration time in the
* directory/table doesn't work, and we instead implement the following
* interface.
*/
static time_t rootDirExpire = 0;
static int rootDirTtl = 0;
/*
* Return 1 if the root dir has expired, 0 otherwise.
*/
int
rootDirExpired(void) {
struct timeval now;
(void) gettimeofday(&now, 0);
if (rootDirExpire >= now.tv_sec)
return (1);
else
return (0);
}
/*
* Update the expiration time of the root dir to be now plus the TTL.
* Also establishes the TTL if not set.
*/
int
touchRootDir(void) {
struct timeval now;
int ttl;
(void) gettimeofday(&now, 0);
/* Do we need to initialize the TTL ? */
if (rootDirTtl == 0) {
__nis_table_mapping_t *t;
t = __nis_find_item_mt(ROOTDIRFILE, &ldapMappingList, 0, 0);
if (t != 0) {
int interval;
interval = t->initTtlHi - t->initTtlLo + 1;
if (interval > 1) {
srand48(now.tv_sec);
ttl = (lrand48() % interval);
} else {
ttl = t->initTtlLo;
}
rootDirTtl = t->ttl;
} else {
ttl = rootDirTtl = 3600;
}
} else {
ttl = rootDirTtl;
}
rootDirExpire = now.tv_sec + ttl;
return (0);
}
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