/* Copyright (c) 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Thorsten Kukuk , 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 #include #include /* 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 */