1 /* ldbm.c - ldap dbm compatibility routines */
3 /* Patched for Berkeley DB version 2.0; /KSp; 98/02/23
5 * - DB version 2.6.4b ; 1998/12/28, /KSp
6 * - DB_DBT_MALLOC ; 1998/03/22, /KSp
7 * - basic implementation; 1998/02/23, /KSp
16 #include <ac/string.h>
20 #include "ldap_pvt_thread.h"
24 ldbm_datum_free( LDBM ldbm, Datum data )
35 ldbm_datum_dup( LDBM ldbm, Datum data )
39 ldbm_datum_init( dup );
41 if ( data.dsize == 0 ) {
47 dup.dsize = data.dsize;
48 if ( (dup.dptr = (char *) malloc( data.dsize )) != NULL )
49 memcpy( dup.dptr, data.dptr, data.dsize );
54 static int ldbm_initialized = 0;
56 #ifndef HAVE_BERKELEY_DB2
57 /* Everything but DB2 is non-reentrant */
59 static ldap_pvt_thread_mutex_t ldbm_big_mutex;
60 #define LDBM_LOCK (ldap_pvt_thread_mutex_lock(&ldbm_big_mutex))
61 #define LDBM_UNLOCK (ldap_pvt_thread_mutex_unlock(&ldbm_big_mutex))
63 int ldbm_initialize( void )
65 if(ldbm_initialized++) return 1;
67 ldap_pvt_thread_mutex_init( &ldbm_big_mutex );
72 int ldbm_shutdown( void )
74 if( !ldbm_initialized ) return 1;
76 ldap_pvt_thread_mutex_destroy( &ldbm_big_mutex );
88 extern int syslog(int, char*, ...);
92 ldbm_malloc( size_t size )
94 return( calloc( 1, size ));
98 ldbm_db_errcall( const char *prefix, char *message )
100 syslog( LOG_INFO, "ldbm_db_errcall(): %s %s", prefix, message );
103 /* a dbEnv for BERKELEYv2 */
104 static DB_ENV ldbm_Env_internal;
105 DB_ENV *ldbm_Env = NULL;
107 /* Berkeley DB 2.x is reentrant */
108 #define LDBM_LOCK ((void)0)
109 #define LDBM_UNLOCK ((void)0)
111 int ldbm_initialize( void )
116 if(ldbm_initialized++) return 1;
118 memset( &ldbm_Env_internal, 0, sizeof( DB_ENV ));
119 ldbm_Env = &ldbm_Env_internal;
121 ldbm_Env->db_errcall = ldbm_db_errcall;
122 ldbm_Env->db_errpfx = "==>";
124 envFlags = DB_CREATE | DB_THREAD;
126 if ( ( err = db_appinit( NULL, NULL, ldbm_Env, envFlags )) ) {
130 sprintf( error, "%ld\n", (long) err );
132 sprintf( error, "%s\n", strerror( err ));
136 "ldbm_initialize(): FATAL error in db_appinit() : %s\n",
144 int ldbm_shutdown( void )
146 if( !ldbm_initialized ) return 1;
148 db_appexit( ldbm_Env );
155 #if defined( LDBM_USE_DBHASH ) || defined( LDBM_USE_DBBTREE )
157 /*****************************************************************
159 * use berkeley db hash or btree package *
161 *****************************************************************/
164 ldbm_open( char *name, int rw, int mode, int dbcachesize )
168 #ifdef HAVE_BERKELEY_DB2
171 memset( &dbinfo, 0, sizeof( dbinfo ));
172 if (( ldbm_Env == NULL ) || ( ldbm_Env->mp_info == NULL ))
173 dbinfo.db_cachesize = dbcachesize;
174 dbinfo.db_pagesize = DEFAULT_DB_PAGE_SIZE;
175 dbinfo.db_malloc = ldbm_malloc;
178 (void) db_open( name, DB_TYPE, rw, mode, ldbm_Env, &dbinfo, &ret );
186 if ( DB_TYPE == DB_HASH ) {
187 memset( (char *) &hinfo, '\0', sizeof(hinfo) );
188 hinfo.cachesize = dbcachesize;
190 } else if ( DB_TYPE == DB_BTREE ) {
191 memset( (char *) &binfo, '\0', sizeof(binfo) );
192 binfo.cachesize = dbcachesize;
199 ret = dbopen( name, rw, mode, DB_TYPE, info );
208 ldbm_close( LDBM ldbm )
211 #ifdef HAVE_BERKELEY_DB2
212 (*ldbm->close)( ldbm, 0 );
214 (*ldbm->close)( ldbm );
220 ldbm_sync( LDBM ldbm )
223 (*ldbm->sync)( ldbm, 0 );
228 ldbm_fetch( LDBM ldbm, Datum key )
235 #ifdef HAVE_BERKELEY_DB2
236 ldbm_datum_init( data );
238 data.flags = DB_DBT_MALLOC;
240 if ( (rc = (*ldbm->get)( ldbm, NULL, &key, &data, 0 )) != 0 ) {
241 ldbm_datum_free( ldbm, data );
243 if ( (rc = (*ldbm->get)( ldbm, &key, &data, 0 )) == 0 ) {
244 /* Berkeley DB 1.85 don't malloc the data for us */
245 /* duplicate it for to ensure reentrancy */
246 data = ldbm_datum_dup( ldbm, data );
259 ldbm_store( LDBM ldbm, Datum key, Datum data, int flags )
265 #ifdef HAVE_BERKELEY_DB2
266 rc = (*ldbm->put)( ldbm, NULL, &key, &data, flags & ~LDBM_SYNC );
269 rc = (*ldbm->put)( ldbm, &key, &data, flags & ~LDBM_SYNC );
272 if ( flags & LDBM_SYNC )
273 (*ldbm->sync)( ldbm, 0 );
281 ldbm_delete( LDBM ldbm, Datum key )
287 #ifdef HAVE_BERKELEY_DB2
288 rc = (*ldbm->del)( ldbm, NULL, &key, 0 );
291 rc = (*ldbm->del)( ldbm, &key, 0 );
293 (*ldbm->sync)( ldbm, 0 );
301 #ifdef HAVE_BERKELEY_DB2
302 ldbm_firstkey( LDBM ldbm, DBC **dbch )
304 ldbm_firstkey( LDBM ldbm )
309 #ifdef HAVE_BERKELEY_DB2
312 ldbm_datum_init( key );
313 ldbm_datum_init( data );
315 key.flags = data.flags = DB_DBT_MALLOC;
319 /* acquire a cursor for the DB */
321 # if defined( DB_VERSION_MAJOR ) && defined( DB_VERSION_MINOR ) && \
322 DB_VERSION_MAJOR == 2 && DB_VERSION_MINOR < 6
324 if ( (*ldbm->cursor)( ldbm, NULL, &dbci ))
327 if ( (*ldbm->cursor)( ldbm, NULL, &dbci, 0 ))
335 if ( (*dbci->c_get)( dbci, &key, &data, DB_NEXT ) == 0 ) {
336 ldbm_datum_free( ldbm, data );
343 if ( (rc = (*ldbm->seq)( ldbm, &key, &data, R_FIRST )) == 0 ) {
344 key = ldbm_datum_dup( ldbm, key );
353 #ifdef HAVE_BERKELEY_DB2
363 #ifdef HAVE_BERKELEY_DB2
364 ldbm_nextkey( LDBM ldbm, Datum key, DBC *dbcp )
366 ldbm_nextkey( LDBM ldbm, Datum key )
371 #ifdef HAVE_BERKELEY_DB2
372 ldbm_datum_init( data );
374 ldbm_datum_free( ldbm, key );
375 key.flags = data.flags = DB_DBT_MALLOC;
379 if ( (*dbcp->c_get)( dbcp, &key, &data, DB_NEXT ) == 0 ) {
380 ldbm_datum_free( ldbm, data );
387 if ( (rc = (*ldbm->seq)( ldbm, &key, &data, R_NEXT )) == 0 ) {
388 key = ldbm_datum_dup( ldbm, key );
403 ldbm_errno( LDBM ldbm )
408 #elif defined( HAVE_GDBM )
410 #include <sys/stat.h>
412 /*****************************************************************
416 *****************************************************************/
419 ldbm_open( char *name, int rw, int mode, int dbcachesize )
426 if ( (db = gdbm_open( name, 0, rw | GDBM_FAST, mode, 0 )) == NULL ) {
430 if ( dbcachesize > 0 && stat( name, &st ) == 0 ) {
431 dbcachesize = (dbcachesize / st.st_blksize);
432 gdbm_setopt( db, GDBM_CACHESIZE, &dbcachesize, sizeof(int) );
441 ldbm_close( LDBM ldbm )
449 ldbm_sync( LDBM ldbm )
457 ldbm_fetch( LDBM ldbm, Datum key )
462 d = gdbm_fetch( ldbm, key );
469 ldbm_store( LDBM ldbm, Datum key, Datum data, int flags )
474 rc = gdbm_store( ldbm, key, data, flags & ~LDBM_SYNC );
475 if ( flags & LDBM_SYNC )
483 ldbm_delete( LDBM ldbm, Datum key )
488 rc = gdbm_delete( ldbm, key );
496 ldbm_firstkey( LDBM ldbm )
501 d = gdbm_firstkey( ldbm );
508 ldbm_nextkey( LDBM ldbm, Datum key )
513 d = gdbm_nextkey( ldbm, key );
520 ldbm_errno( LDBM ldbm )
531 #elif defined( HAVE_NDBM )
533 /*****************************************************************
535 * if no gdbm, fall back to using ndbm, the standard unix thing *
537 *****************************************************************/
541 ldbm_open( char *name, int rw, int mode, int dbcachesize )
546 ldbm = dbm_open( name, rw, mode );
553 ldbm_close( LDBM ldbm )
562 ldbm_sync( LDBM ldbm )
568 ldbm_fetch( LDBM ldbm, Datum key )
573 d = ldbm_datum_dup( ldbm, dbm_fetch( ldbm, key ) );
580 ldbm_store( LDBM ldbm, Datum key, Datum data, int flags )
585 rc = dbm_store( ldbm, key, data, flags );
592 ldbm_delete( LDBM ldbm, Datum key )
597 rc = dbm_delete( ldbm, key );
604 ldbm_firstkey( LDBM ldbm )
609 d = dbm_firstkey( ldbm );
616 ldbm_nextkey( LDBM ldbm, Datum key )
621 d = dbm_nextkey( ldbm );
628 ldbm_errno( LDBM ldbm )
633 err = dbm_error( ldbm );