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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 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _CACHE_H
#define _CACHE_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#include <stdlib.h>
#include "../gen/nis_local.h"
#include "../gen/nis_clnt.h"
#include "nsl_stdio_prv.h"
#define CLIENT_FILE "/var/nis/client_info"
#define PREF_ALL_VAL 0
#define PREF_ONLY_VAL 1
#define PREF_ALL "all"
#define PREF_ONLY "pref_only"
#define PREF_SRVR "pref_srvr"
#define PREF_TYPE "pref_type"
#define ONE_HOUR (1 * 60 * 60)
// Semaphores for cache manager
#define NIS_SEM_W_KEY 100303 // key for the writer semaphore
#define NIS_W_NSEMS 1 // number of semaphores in the writer array
// in the writer array
#define NIS_SEM_MGR_UP 0 // is the cache manager running?
#define SEM_OWNER_READ 0400
#define SEM_OWNER_ALTER 0200
#define SEM_GROUP_READ 0040
#define SEM_GROUP_ALTER 0020
#define SEM_OTHER_READ 0004
#define SEM_OTHER_ALTER 0002
extern int __nis_debuglevel;
struct HostEnt {
char *name;
char *interface;
int rank;
HostEnt *next;
};
class HostList {
public:
HostList();
~HostList();
void addHost(char *name, char *interface, int rank);
int checkHost(char *value, char *interface, int *rank);
int matchHost(char *name, char *uaddr, int *rank);
int serves(directory_obj *dobj);
int dumpList(__NSL_FILE *fp);
void addOption(int value);
void dumpOption(__NSL_FILE *fp);
void deleteBackupList();
void deleteList();
void backupList();
void restoreList();
int pref_option;
void *operator new(size_t bytes) { return calloc(1, bytes); }
void operator delete(void *arg) { free(arg); }
private:
HostEnt *entries, *old_entries;
int old_pref_option;
};
class NisCache {
public:
NisCache();
~NisCache();
// This set of routines is the primary interface to the
// cache classes. The NisCache class provides default
// implementations of them. The derived classes override
// them if necessary.
virtual int okay();
virtual nis_error searchDir(char *dname,
nis_bound_directory **binding, int near);
virtual nis_error bindReplica(char *dname,
nis_bound_directory **binding);
virtual nis_error bindMaster(char *dname,
nis_bound_directory **binding);
virtual nis_error bindServer(nis_server *srv, int nsrv,
nis_bound_directory **binding);
virtual int refreshBinding(nis_bound_directory *binding);
virtual int refreshAddress(nis_bound_endpoint *bep);
virtual int refreshCallback(nis_bound_endpoint *bep);
virtual bool_t readColdStart();
virtual bool_t readServerColdStart(uint32_t *exp_time);
virtual void print();
virtual void addBinding(nis_bound_directory *binding);
virtual void removeBinding(nis_bound_directory *binding);
virtual void activeAdd(nis_active_endpoint *act);
virtual void activeRemove(endpoint *ep, int all);
virtual int activeCheck(endpoint *ep);
virtual int activeGet(endpoint *ep, nis_active_endpoint **act);
virtual int getStaleEntries(nis_bound_directory ***binding);
virtual int getAllEntries(nis_bound_directory ***binding);
virtual int getAllActive(nis_active_endpoint ***actlist);
virtual void addAddresses(nis_bound_directory *binding);
virtual uint32_t loadPreferredServers();
virtual uint32_t refreshCache();
virtual int checkUp();
virtual int resetBinding(nis_bound_directory *binding);
// This is a set of helper routines for derived classes to
// use.
void printBinding(nis_bound_directory *binding);
void printBinding_exptime(nis_bound_directory *binding,
uint32_t exptime);
void printActive(nis_active_endpoint *act);
nis_error loadDirectory(char *dname);
nis_error loadDirectory(char *dname, int force_finddir);
nis_active_endpoint *activeDup(nis_active_endpoint *src);
void activeFree(nis_active_endpoint *act);
void *packBinding(nis_bound_directory *binding, int *len);
nis_bound_directory *unpackBinding(void *data, int len);
void *packActive(nis_active_endpoint *act, int *len);
nis_active_endpoint *unpackActive(void *data, int len);
void sortServers(nis_bound_directory *binding);
nis_error pingServers(nis_server *srv, int nsrv, int quick);
uint32_t expireTime(uint32_t ttl);
int nextGeneration();
void rerankServers();
void writePreference(__NSL_FILE *fp);
void mergePreference(char *value);
void mergeOption(char *value);
void resetPreference();
void backupPreference();
void delBackupPref();
void restorePreference();
uint32_t loadDotFile();
nis_error createBinding(fd_result *res);
nis_error createBinding(directory_obj *res);
char *coldStartDir();
// We define a new and delete routine so that we don't
// depend on libC at run time.
void *operator new(size_t bytes) { return calloc(1, bytes); }
void operator delete(void *arg) { free(arg); }
private:
mutex_t gen_lock;
int gen;
char *cold_start_dir;
HostList prefer;
void extractAddresses(nis_bound_directory *binding);
void printDirectorySpecial(directory_obj *dobj);
int rankServer(nis_server *srv, endpoint *ep, void *local_interfaces);
};
#ifdef __cplusplus
}
#endif
#endif /* _CACHE_H */
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