1 /* ldbm.c - ldap dbm compatibility routines */
3 /* Patched for Berkeley DB version 2.0; /KSp; 98/02/23
5 * - basic implementation; 1998/02/23, /KSp
6 * - DB_DBT_MALLOC ; 1998/03/22, /KSp
14 #include <sys/types.h>
17 /*****************************************************************
21 *****************************************************************/
24 ldbm_open( char *name, int rw, int mode, int dbcachesize )
29 if ( (db = gdbm_open( name, 0, rw | GDBM_FAST, mode, 0 )) == NULL ) {
32 if ( dbcachesize > 0 && stat( name, &st ) == 0 ) {
33 dbcachesize = (dbcachesize / st.st_blksize);
34 gdbm_setopt( db, GDBM_CACHESIZE, &dbcachesize, sizeof(int) );
41 ldbm_close( LDBM ldbm )
47 ldbm_sync( LDBM ldbm )
53 ldbm_datum_free( LDBM ldbm, Datum data )
59 ldbm_datum_dup( LDBM ldbm, Datum data )
63 if ( data.dsize == 0 ) {
69 dup.dsize = data.dsize;
70 if ( dup.dptr = (char *) malloc( data.dsize ) )
71 memcpy( dup.dptr, data.dptr, data.dsize );
77 ldbm_fetch( LDBM ldbm, Datum key )
79 return( gdbm_fetch( ldbm, key ) );
83 ldbm_store( LDBM ldbm, Datum key, Datum data, int flags )
87 rc = gdbm_store( ldbm, key, data, flags & ~LDBM_SYNC );
88 if ( flags & LDBM_SYNC )
94 ldbm_delete( LDBM ldbm, Datum key )
98 rc = gdbm_delete( ldbm, key );
104 ldbm_firstkey( LDBM ldbm )
106 return( gdbm_firstkey( ldbm ) );
110 ldbm_nextkey( LDBM ldbm, Datum key )
112 return( gdbm_nextkey( ldbm, key ) );
116 ldbm_errno( LDBM ldbm )
118 return( (int) gdbm_errno );
122 #if defined( LDBM_USE_DBHASH ) || defined( LDBM_USE_DBBTREE )
124 /*****************************************************************
126 * use berkeley db hash or btree package *
128 *****************************************************************/
131 /*************************************************
133 * A malloc routine for use with DB_DBT_MALLOC *
135 *************************************************/
141 ldbm_malloc( size_t size )
143 return( calloc( 1, size ));
150 ldbm_open( char *name, int rw, int mode, int dbcachesize )
157 memset( &dbinfo, 0, sizeof( dbinfo ));
158 dbinfo.db_cachesize = dbcachesize;
159 dbinfo.db_pagesize = DEFAULT_DB_PAGE_SIZE;
160 dbinfo.db_malloc = ldbm_malloc;
162 db_open( name, DB_TYPE, rw, mode, NULL, &dbinfo, &ret );
169 if ( DB_TYPE == DB_HASH ) {
170 memset( (char *) &hinfo, '\0', sizeof(hinfo) );
171 hinfo.cachesize = dbcachesize;
173 } else if ( DB_TYPE == DB_BTREE ) {
174 memset( (char *) &binfo, '\0', sizeof(binfo) );
175 binfo.cachesize = dbcachesize;
181 ret = dbopen( name, rw, mode, DB_TYPE, info );
189 ldbm_close( LDBM ldbm )
192 (*ldbm->close)( ldbm, 0 );
194 (*ldbm->close)( ldbm );
199 ldbm_sync( LDBM ldbm )
201 (*ldbm->sync)( ldbm, 0 );
205 ldbm_datum_free( LDBM ldbm, Datum data )
211 ldbm_datum_dup( LDBM ldbm, Datum data )
216 memset( &dup, 0, sizeof( dup ));
219 if ( data.dsize == 0 ) {
225 dup.dsize = data.dsize;
226 if ( dup.dptr = (char *) malloc( data.dsize ) )
227 memcpy( dup.dptr, data.dptr, data.dsize );
233 ldbm_fetch( LDBM ldbm, Datum key )
239 memset( &data, 0, sizeof( data ));
241 data.flags = DB_DBT_MALLOC;
243 if ( (rc = (*ldbm->get)( ldbm, NULL, &key, &data, 0 )) != 0 ) {
244 if ( data.dptr ) free( data.dptr );
246 if ( (rc = (*ldbm->get)( ldbm, &key, &data, 0 )) == 0 ) {
247 data = ldbm_datum_dup( ldbm, data );
258 ldbm_store( LDBM ldbm, Datum key, Datum data, int flags )
263 rc = (*ldbm->put)( ldbm, NULL, &key, &data, flags & ~LDBM_SYNC );
266 rc = (*ldbm->put)( ldbm, &key, &data, flags & ~LDBM_SYNC );
268 if ( flags & LDBM_SYNC )
269 (*ldbm->sync)( ldbm, 0 );
274 ldbm_delete( LDBM ldbm, Datum key )
279 rc = (*ldbm->del)( ldbm, NULL, &key, 0 );
282 rc = (*ldbm->del)( ldbm, &key, 0 );
284 (*ldbm->sync)( ldbm, 0 );
290 ldbm_firstkey( LDBM ldbm, DBC **dbch )
292 ldbm_firstkey( LDBM ldbm )
301 memset( &key, 0, sizeof( key ));
302 memset( &data, 0, sizeof( data ));
304 key.flags = data.flags = DB_DBT_MALLOC;
306 /* acquire a cursor for the DB */
307 if ( (*ldbm->cursor)( ldbm, NULL, &dbci )) {
311 if ( (*dbci->c_get)( dbci, &key, &data, DB_NEXT ) == 0 ) {
312 if ( data.dptr ) free( data.dptr );
314 if ( (rc = (*ldbm->seq)( ldbm, &key, &data, R_FIRST )) == 0 ) {
315 key = ldbm_datum_dup( ldbm, key );
331 ldbm_nextkey( LDBM ldbm, Datum key, DBC *dbcp )
333 ldbm_nextkey( LDBM ldbm, Datum key )
340 void *oldKey = key.dptr;
342 memset( &data, 0, sizeof( data ));
344 data.flags = DB_DBT_MALLOC;
346 if ( (*dbcp->c_get)( dbcp, &key, &data, DB_NEXT ) == 0 ) {
347 if ( data.dptr ) free( data.dptr );
349 if ( (rc = (*ldbm->seq)( ldbm, &key, &data, R_NEXT )) == 0 ) {
350 key = ldbm_datum_dup( ldbm, key );
357 if ( oldKey ) free( oldKey );
364 ldbm_errno( LDBM ldbm )
373 /*****************************************************************
375 * if no gdbm, fall back to using ndbm, the standard unix thing *
377 *****************************************************************/
381 ldbm_open( char *name, int rw, int mode, int dbcachesize )
383 return( dbm_open( name, rw, mode ) );
387 ldbm_close( LDBM ldbm )
394 ldbm_sync( LDBM ldbm )
400 ldbm_datum_free( LDBM ldbm, Datum data )
406 ldbm_datum_dup( LDBM ldbm, Datum data )
410 if ( data.dsize == 0 ) {
416 dup.dsize = data.dsize;
417 if ( dup.dptr = (char *) malloc( data.dsize ) )
418 memcpy( dup.dptr, data.dptr, data.dsize );
424 ldbm_fetch( LDBM ldbm, Datum key )
426 return( ldbm_datum_dup( ldbm, dbm_fetch( ldbm, key ) ) );
430 ldbm_store( LDBM ldbm, Datum key, Datum data, int flags )
432 return( dbm_store( ldbm, key, data, flags ) );
436 ldbm_delete( LDBM ldbm, Datum key )
438 return( dbm_delete( ldbm, key ) );
442 ldbm_firstkey( LDBM ldbm )
444 return( dbm_firstkey( ldbm ) );
448 ldbm_nextkey( LDBM ldbm, Datum key )
450 return( dbm_nextkey( ldbm ) );
454 ldbm_errno( LDBM ldbm )
456 return( dbm_error( ldbm ) );