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124 lines
3.1 KiB
C
124 lines
3.1 KiB
C
/* back-ldbm.h - ldap ldbm back-end header file */
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#ifndef _BACK_LDBM_H_
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#define _BACK_LDBM_H_
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#include "ldbm.h"
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LDAP_BEGIN_DECL
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#define DEFAULT_CACHE_SIZE 1000
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#ifdef HAVE_BERKELEY_DB2
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# define DEFAULT_DBCACHE_SIZE (100 * DEFAULT_DB_PAGE_SIZE)
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#else
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# define DEFAULT_DBCACHE_SIZE 100000
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#endif
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#define DEFAULT_DB_DIRECTORY "/usr/tmp"
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#define DEFAULT_MODE 0600
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#define SUBLEN 3
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/*
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* there is a single index for each attribute. these prefixes insure
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* that there is no collision among keys.
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*/
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#define EQ_PREFIX '=' /* prefix for equality keys */
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#define APPROX_PREFIX '~' /* prefix for approx keys */
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#define SUB_PREFIX '*' /* prefix for substring keys */
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#define CONT_PREFIX '\\' /* prefix for continuation keys */
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#define DEFAULT_BLOCKSIZE 8192
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/*
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* This structure represents an id block on disk and an id list
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* in core.
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*
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* The fields have the following meanings:
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*
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* b_nmax maximum number of ids in this block. if this is == ALLIDSBLOCK,
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* then this block represents all ids.
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* b_nids current number of ids in use in this block. if this
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* is == INDBLOCK, then this block is an indirect block
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* containing a list of other blocks containing actual ids.
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* the list is terminated by an id of NOID.
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* b_ids a list of the actual ids themselves
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*/
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typedef struct block {
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ID b_nmax; /* max number of ids in this list */
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#define ALLIDSBLOCK 0 /* == 0 => this is an allid block */
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ID b_nids; /* current number of ids used */
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#define INDBLOCK 0 /* == 0 => this is an indirect blk */
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ID b_ids[1]; /* the ids - actually bigger */
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} Block, IDList;
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#define ALLIDS( idl ) ((idl)->b_nmax == ALLIDSBLOCK)
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#define INDIRECT_BLOCK( idl ) ((idl)->b_nids == INDBLOCK)
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/* for the in-core cache of entries */
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struct cache {
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int c_maxsize;
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int c_cursize;
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Avlnode *c_dntree;
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Avlnode *c_idtree;
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Entry *c_lruhead; /* lru - add accessed entries here */
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Entry *c_lrutail; /* lru - rem lru entries from here */
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pthread_mutex_t c_mutex;
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};
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/* for the cache of open index files */
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struct dbcache {
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char *dbc_name;
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int dbc_refcnt;
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time_t dbc_lastref;
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pthread_mutex_t dbc_mutex;
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pthread_cond_t dbc_cv;
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int dbc_readers;
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long dbc_blksize;
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int dbc_maxids;
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int dbc_maxindirect;
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LDBM dbc_db;
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};
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/* for the cache of attribute information (which are indexed, etc.) */
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struct attrinfo {
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char *ai_type; /* type name (cn, sn, ...) */
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int ai_indexmask; /* how the attr is indexed */
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#define INDEX_PRESENCE 0x01
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#define INDEX_EQUALITY 0x02
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#define INDEX_APPROX 0x04
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#define INDEX_SUB 0x08
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#define INDEX_UNKNOWN 0x10
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#define INDEX_FROMINIT 0x20
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int ai_syntaxmask; /* what kind of syntax */
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/* ...from slap.h...
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#define SYNTAX_CIS 0x01
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#define SYNTAX_CES 0x02
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#define SYNTAX_BIN 0x04
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... etc. ...
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*/
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};
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#define MAXDBCACHE 10
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struct ldbminfo {
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ID li_nextid;
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pthread_mutex_t li_nextid_mutex;
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int li_mode;
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char *li_directory;
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struct cache li_cache;
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Avlnode *li_attrs;
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int li_dbcachesize;
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int li_dbcachewsync;
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struct dbcache li_dbcache[MAXDBCACHE];
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pthread_mutex_t li_dbcache_mutex;
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pthread_cond_t li_dbcache_cv;
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};
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#include "proto-back-ldbm.h"
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LDAP_END_DECL
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#endif /* _back_ldbm_h_ */
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