1 /* back-ldbm.h - ldap ldbm back-end header file */
10 #define DEFAULT_CACHE_SIZE 1000
12 #ifdef HAVE_BERKELEY_DB2
13 # define DEFAULT_DBCACHE_SIZE (100 * DEFAULT_DB_PAGE_SIZE)
15 # define DEFAULT_DBCACHE_SIZE 100000
18 #define DEFAULT_DB_DIRECTORY "/usr/tmp"
19 #define DEFAULT_MODE 0600
24 * there is a single index for each attribute. these prefixes insure
25 * that there is no collision among keys.
27 #define EQ_PREFIX '=' /* prefix for equality keys */
28 #define APPROX_PREFIX '~' /* prefix for approx keys */
29 #define SUB_PREFIX '*' /* prefix for substring keys */
30 #define CONT_PREFIX '\\' /* prefix for continuation keys */
32 #define UNKNOWN_PREFIX '?' /* prefix for unknown keys */
34 #define DEFAULT_BLOCKSIZE 8192
37 * This structure represents an id block on disk and an id list
40 * The fields have the following meanings:
42 * b_nmax maximum number of ids in this block. if this is == ALLIDSBLOCK,
43 * then this block represents all ids.
44 * b_nids current number of ids in use in this block. if this
45 * is == INDBLOCK, then this block is an indirect block
46 * containing a list of other blocks containing actual ids.
47 * the list is terminated by an id of NOID.
48 * b_ids a list of the actual ids themselves
53 #define ID_BLOCK_NMAX_OFFSET 0
54 #define ID_BLOCK_NIDS_OFFSET 1
55 #define ID_BLOCK_IDS_OFFSET 2
57 /* all ID_BLOCK macros operate on a pointer to a ID_BLOCK */
59 #define ID_BLOCK_NMAX(b) ((b)[ID_BLOCK_NMAX_OFFSET])
60 #define ID_BLOCK_NIDS(b) ((b)[ID_BLOCK_NIDS_OFFSET])
61 #define ID_BLOCK_ID(b, n) ((b)[ID_BLOCK_IDS_OFFSET+(n)])
63 #define ID_BLOCK_NOID(b, n) (ID_BLOCK_ID((b),(n)) == NOID)
65 #define ID_BLOCK_ALLIDS_VALUE 0
66 #define ID_BLOCK_ALLIDS(b) (ID_BLOCK_NMAX(b) == ID_BLOCK_ALLIDS_VALUE)
68 #define ID_BLOCK_INDIRECT_VALUE 0
69 #define ID_BLOCK_INDIRECT(b) (ID_BLOCK_NIDS(b) == ID_BLOCK_INDIRECT_VALUE)
71 /* for the in-core cache of entries */
77 Entry *c_lruhead; /* lru - add accessed entries here */
78 Entry *c_lrutail; /* lru - rem lru entries from here */
79 ldap_pvt_thread_mutex_t c_mutex;
82 #define CACHE_READ_LOCK 0
83 #define CACHE_WRITE_LOCK 1
85 /* for the cache of open index files */
96 /* for the cache of attribute information (which are indexed, etc.) */
98 char *ai_type; /* type name (cn, sn, ...) */
99 int ai_indexmask; /* how the attr is indexed */
100 #define INDEX_PRESENCE 0x01
101 #define INDEX_EQUALITY 0x02
102 #define INDEX_APPROX 0x04
103 #define INDEX_SUB 0x08
104 #define INDEX_UNKNOWN 0x10
105 #define INDEX_FROMINIT 0x20
106 int ai_syntaxmask; /* what kind of syntax */
108 #define SYNTAX_CIS 0x01
109 #define SYNTAX_CES 0x02
110 #define SYNTAX_BIN 0x04
115 #define MAXDBCACHE 10
117 /* this could be made an option */
118 #ifndef SLAPD_NEXTID_CHUNK
119 #define SLAPD_NEXTID_CHUNK 32
124 #if SLAPD_NEXTID_CHUNK > 1
127 char *li_nextid_file;
128 ldap_pvt_thread_mutex_t li_root_mutex;
129 ldap_pvt_thread_mutex_t li_add_mutex;
130 ldap_pvt_thread_mutex_t li_nextid_mutex;
133 struct cache li_cache;
137 struct dbcache li_dbcache[MAXDBCACHE];
138 ldap_pvt_thread_mutex_t li_dbcache_mutex;
139 ldap_pvt_thread_cond_t li_dbcache_cv;
142 #include "proto-back-ldbm.h"
146 #endif /* _back_ldbm_h_ */