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/* Copyright (c) 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifndef _NSCD_H
#define _NSCD_H 1
#include <pthread.h>
#include <time.h>
#include <sys/uio.h>
/* The declarations for the request and response types are in the file
"nscd-client.h", which should contain everything needed by client
functions. */
#include "nscd-client.h"
/* Handle databases. */
typedef enum
{
pwddb,
grpdb,
hstdb,
lastdb
} dbtype;
/* Structure for one hash table entry. */
struct hashentry
{
request_type type; /* Which type of dataset. */
size_t len; /* Length of key. */
void *key; /* Pointer to key. */
uid_t owner; /* If secure table, this is the owner. */
struct hashentry *next; /* Next entry in this hash bucket list. */
time_t timeout; /* Time when this entry becomes invalid. */
ssize_t total; /* Number of bytes in PACKET. */
const void *packet; /* Records for the result. */
void *data; /* The malloc()ed respond record. */
int last; /* Nonzero if DATA should be free()d. */
struct hashentry *dellist; /* Next record to be deleted. */
};
/* Structure describing one database. */
struct database
{
pthread_rwlock_t lock;
int enabled;
int check_file;
const char *filename;
time_t file_mtime;
size_t module;
const struct iovec *disabled_iov;
unsigned long int postimeout;
unsigned long int negtimeout;
unsigned long int poshit;
unsigned long int neghit;
unsigned long int posmiss;
unsigned long int negmiss;
unsigned long int nentries;
unsigned long int maxnentries;
unsigned long int maxnsearched;
unsigned long int rdlockdelayed;
unsigned long int wrlockdelayed;
struct hashentry **array;
};
/* Global variables. */
extern struct database dbs[lastdb];
extern const char *dbnames[lastdb];
extern const char *serv2str[LASTREQ];
extern const struct iovec pwd_iov_disabled;
extern const struct iovec grp_iov_disabled;
extern const struct iovec hst_iov_disabled;
/* Number of threads to run. */
extern int nthreads;
/* Tables for which we cache data with uid. */
extern int secure[lastdb];
extern int secure_in_use; /* Is one of the above 1? */
/* User name to run server processes as. */
extern const char *server_user;
/* Name and UID of user who is allowed to request statistics. */
extern const char *stat_user;
extern uid_t stat_uid;
/* Time the server was started. */
extern time_t start_time;
/* Number of times clients had to wait. */
extern unsigned long int client_queued;
/* Prototypes for global functions. */
/* nscd.c */
extern void termination_handler (int signum) __attribute__ ((__noreturn__));
extern int nscd_open_socket (void);
/* connections.c */
extern void nscd_init (void);
extern void close_sockets (void);
extern void start_threads (void) __attribute__ ((__noreturn__));
/* nscd_conf.c */
extern int nscd_parse_file (const char *fname, struct database dbs[lastdb]);
/* nscd_stat.c */
extern void send_stats (int fd, struct database dbs[lastdb]);
extern int receive_print_stats (void) __attribute__ ((__noreturn__));
/* cache.c */
extern struct hashentry *cache_search (request_type, void *key, size_t len,
struct database *table, uid_t owner);
extern void cache_add (int type, void *key, size_t len,
const void *packet, size_t iovtotal, void *data,
int last, time_t t, struct database *table,
uid_t owner);
extern void prune_cache (struct database *table, time_t now);
/* pwdcache.c */
extern void addpwbyname (struct database *db, int fd, request_header *req,
void *key, uid_t uid);
extern void addpwbyuid (struct database *db, int fd, request_header *req,
void *key, uid_t uid);
/* grpcache.c */
extern void addgrbyname (struct database *db, int fd, request_header *req,
void *key, uid_t uid);
extern void addgrbygid (struct database *db, int fd, request_header *req,
void *key, uid_t uid);
/* hstcache.c */
extern void addhstbyname (struct database *db, int fd, request_header *req,
void *key, uid_t uid);
extern void addhstbyaddr (struct database *db, int fd, request_header *req,
void *key, uid_t uid);
extern void addhstbynamev6 (struct database *db, int fd, request_header *req,
void *key, uid_t uid);
extern void addhstbyaddrv6 (struct database *db, int fd, request_header *req,
void *key, uid_t uid);
#endif /* nscd.h */
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