1 /* id2entry.c - routines to deal with the id2entry database */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2000-2004 The OpenLDAP Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
12 * A copy of this license is available in the file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
20 #include <ac/string.h>
24 static int bdb_id2entry_put(
30 struct bdb_info *bdb = (struct bdb_info *) be->be_private;
31 DB *db = bdb->bi_id2entry->bdi_db;
37 struct berval odn, ondn;
39 /* We only store rdns, and they go in the dn2id database. */
41 odn = e->e_name; ondn = e->e_nname;
43 e->e_name = slap_empty_bv;
44 e->e_nname = slap_empty_bv;
48 /* Store ID in BigEndian format */
50 key.size = sizeof(ID);
51 BDB_ID2DISK( e->e_id, &nid );
53 rc = entry_encode( e, &bv );
55 e->e_name = odn; e->e_nname = ondn;
57 if( rc != LDAP_SUCCESS ) {
64 rc = db->put( db, tid, &key, &data, flag );
71 * This routine adds (or updates) an entry on disk.
72 * The cache should be already be updated.
81 return bdb_id2entry_put(be, tid, e, DB_NOOVERWRITE);
84 int bdb_id2entry_update(
89 return bdb_id2entry_put(be, tid, e, 0);
98 struct bdb_info *bdb = (struct bdb_info *) be->be_private;
99 DB *db = bdb->bi_id2entry->bdi_db;
109 key.size = sizeof(ID);
110 BDB_ID2DISK( id, &nid );
113 data.flags = DB_DBT_MALLOC;
116 rc = db->get( db, tid, &key, &data, bdb->bi_db_opflags );
122 DBT2bv( &data, &bv );
124 rc = entry_decode( &bv, e );
129 /* only free on error. On success, the entry was
132 ch_free( data.data );
138 int bdb_id2entry_delete(
143 struct bdb_info *bdb = (struct bdb_info *) be->be_private;
144 DB *db = bdb->bi_id2entry->bdi_db;
151 key.size = sizeof(ID);
152 BDB_ID2DISK( e->e_id, &nid );
154 /* delete from database */
155 rc = db->del( db, tid, &key, 0 );
160 int bdb_entry_return(
163 /* Our entries are allocated in two blocks; the data comes from
164 * the db itself and the Entry structure and associated pointers
165 * are allocated in entry_decode. The db data pointer is saved
166 * in e_bv. Since the Entry structure is allocated as a single
167 * block, e_attrs is always a fixed offset from e. The exception
168 * is when an entry has been modified, in which case we also need
171 #ifdef LDAP_COMP_MATCH
172 comp_tree_free( e->e_attrs );
174 if( !e->e_bv.bv_val ) { /* A regular entry, from do_add */
178 if( (void *) e->e_attrs != (void *) (e+1)) {
179 attrs_free( e->e_attrs );
182 /* See if the DNs were changed by modrdn */
183 if( e->e_nname.bv_val < e->e_bv.bv_val || e->e_nname.bv_val >
184 e->e_bv.bv_val + e->e_bv.bv_len ) {
185 ch_free(e->e_name.bv_val);
186 ch_free(e->e_nname.bv_val);
187 e->e_name.bv_val = NULL;
188 e->e_nname.bv_val = NULL;
191 /* In tool mode the e_bv buffer is realloc'd, leave it alone */
192 if( !(slapMode & SLAP_TOOL_MODE) ) {
193 free( e->e_bv.bv_val );
196 free( e->e_bv.bv_val );
203 int bdb_entry_release(
208 struct bdb_info *bdb = (struct bdb_info *) o->o_bd->be_private;
209 struct bdb_op_info *boi = NULL;
211 /* slapMode : SLAP_SERVER_MODE, SLAP_TOOL_MODE,
212 SLAP_TRUNCATE_MODE, SLAP_UNDEFINED_MODE */
214 if ( slapMode == SLAP_SERVER_MODE ) {
215 /* If not in our cache, just free it */
216 if ( !e->e_private ) {
217 return bdb_entry_return( e );
219 /* free entry and reader or writer lock */
221 boi = (struct bdb_op_info *)o->o_private;
223 /* lock is freed with txn */
224 if ( !boi || boi->boi_txn ) {
225 bdb_unlocked_cache_return_entry_rw( &bdb->bi_cache, e, rw );
227 struct bdb_lock_info *bli, *prev;
228 for ( prev=(struct bdb_lock_info *)&boi->boi_locks,
229 bli = boi->boi_locks; bli; prev=bli, bli=bli->bli_next ) {
230 if ( bli->bli_id == e->e_id ) {
231 bdb_cache_return_entry_rw( bdb->bi_dbenv, &bdb->bi_cache,
232 e, rw, &bli->bli_lock );
233 prev->bli_next = bli->bli_next;
234 o->o_tmpfree( bli, o->o_tmpmemctx );
238 if ( !boi->boi_locks ) {
239 o->o_tmpfree( boi, o->o_tmpmemctx );
244 if (e->e_private != NULL)
245 BEI(e)->bei_e = NULL;
247 bdb_entry_return ( e );
253 /* return LDAP_SUCCESS IFF we can retrieve the specified entry.
259 AttributeDescription *at,
263 struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
264 struct bdb_op_info *boi = NULL;
269 const char *at_name = at ? at->ad_cname.bv_val : "(null)";
271 u_int32_t locker = 0;
273 int free_lock_id = 0;
275 Debug( LDAP_DEBUG_ARGS,
276 "=> bdb_entry_get: ndn: \"%s\"\n", ndn->bv_val, 0, 0 );
277 Debug( LDAP_DEBUG_ARGS,
278 "=> bdb_entry_get: oc: \"%s\", at: \"%s\"\n",
279 oc ? oc->soc_cname.bv_val : "(null)", at_name, 0);
281 if( op ) boi = (struct bdb_op_info *) op->o_private;
282 if( boi != NULL && op->o_bd->be_private == boi->boi_bdb->be_private ) {
284 locker = boi->boi_locker;
288 locker = TXN_ID ( txn );
289 } else if ( !locker ) {
290 rc = LOCK_ID ( bdb->bi_dbenv, &locker );
301 /* can we find entry */
302 rc = bdb_dn2entry( op, txn, ndn, &ei, 0, locker, &lock );
307 case DB_LOCK_DEADLOCK:
308 case DB_LOCK_NOTGRANTED:
309 /* the txn must abort and retry */
314 ldap_pvt_thread_yield();
317 if ( boi ) boi->boi_err = rc;
318 if ( free_lock_id ) {
319 LOCK_ID_FREE( bdb->bi_dbenv, locker );
321 return (rc != LDAP_BUSY) ? LDAP_OTHER : LDAP_BUSY;
323 if (ei) e = ei->bei_e;
325 Debug( LDAP_DEBUG_ACL,
326 "=> bdb_entry_get: cannot find entry: \"%s\"\n",
328 if ( free_lock_id ) {
329 LOCK_ID_FREE( bdb->bi_dbenv, locker );
331 return LDAP_NO_SUCH_OBJECT;
334 Debug( LDAP_DEBUG_ACL,
335 "=> bdb_entry_get: found entry: \"%s\"\n",
338 /* find attribute values */
339 if( is_entry_alias( e ) ) {
340 Debug( LDAP_DEBUG_ACL,
341 "<= bdb_entry_get: entry is an alias\n", 0, 0, 0 );
342 rc = LDAP_ALIAS_PROBLEM;
346 if( is_entry_referral( e ) ) {
347 Debug( LDAP_DEBUG_ACL,
348 "<= bdb_entry_get: entry is a referral\n", 0, 0, 0 );
353 if ( oc && !is_entry_objectclass( e, oc, 0 )) {
354 Debug( LDAP_DEBUG_ACL,
355 "<= bdb_entry_get: failed to find objectClass\n",
357 rc = LDAP_NO_SUCH_ATTRIBUTE;
362 if( rc != LDAP_SUCCESS ) {
364 bdb_cache_return_entry_rw(bdb->bi_dbenv, &bdb->bi_cache, e, rw, &lock);
367 if ( slapMode == SLAP_SERVER_MODE ) {
369 /* big drag. we need a place to store a read lock so we can
370 * release it later?? If we're in a txn, nothing is needed
371 * here because the locks will go away with the txn.
375 boi = op->o_tmpcalloc(1,sizeof(struct bdb_op_info),op->o_tmpmemctx);
376 boi->boi_bdb = op->o_bd;
379 if ( !boi->boi_txn ) {
380 struct bdb_lock_info *bli;
381 bli = op->o_tmpalloc( sizeof(struct bdb_lock_info),
383 bli->bli_next = boi->boi_locks;
384 bli->bli_id = e->e_id;
385 bli->bli_lock = lock;
386 boi->boi_locks = bli;
390 *ent = entry_dup( e );
391 bdb_cache_return_entry_rw(bdb->bi_dbenv, &bdb->bi_cache, e, rw, &lock);
395 if ( free_lock_id ) {
396 LOCK_ID_FREE( bdb->bi_dbenv, locker );
399 Debug( LDAP_DEBUG_TRACE,
400 "bdb_entry_get: rc=%d\n",