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[openldap] / servers / slapd / back-bdb / modify.c
1 /* modify.c - bdb backend modify routine */
2 /* $OpenLDAP$ */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4  *
5  * Copyright 2000-2004 The OpenLDAP Foundation.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted only as authorized by the OpenLDAP
10  * Public License.
11  *
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>.
15  */
16
17 #include "portable.h"
18
19 #include <stdio.h>
20 #include <ac/string.h>
21 #include <ac/time.h>
22
23 #include "back-bdb.h"
24 #include "external.h"
25
26 static struct berval scbva[] = {
27         BER_BVC("glue"),
28         BER_BVNULL
29 };
30
31 int bdb_modify_internal(
32         Operation *op,
33         DB_TXN *tid,
34         Modifications *modlist,
35         Entry *e,
36         const char **text,
37         char *textbuf,
38         size_t textlen )
39 {
40         int rc, err;
41         Modification    *mod;
42         Modifications   *ml;
43         Attribute       *save_attrs;
44         Attribute       *ap;
45         int                     glue_attr_delete = 0;
46
47         Debug( LDAP_DEBUG_TRACE, "bdb_modify_internal: 0x%08lx: %s\n",
48                 e->e_id, e->e_dn, 0);
49
50         if ( !acl_check_modlist( op, e, modlist )) {
51                 return LDAP_INSUFFICIENT_ACCESS;
52         }
53
54         /* save_attrs will be disposed of by bdb_cache_modify */
55         save_attrs = e->e_attrs;
56         e->e_attrs = attrs_dup( e->e_attrs );
57
58         for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
59                 int match;
60                 mod = &ml->sml_mod;
61                 switch( mod->sm_op ) {
62                 case LDAP_MOD_ADD:
63                 case LDAP_MOD_REPLACE:
64                         if ( mod->sm_desc == slap_schema.si_ad_structuralObjectClass ) {
65                                 value_match( &match, slap_schema.si_ad_structuralObjectClass,
66                                 slap_schema.si_ad_structuralObjectClass->ad_type->sat_equality,
67                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
68                                 &mod->sm_values[0], &scbva[0], text );
69                                 if ( !match )
70                                         glue_attr_delete = 1;
71                         }
72                 }
73                 if ( glue_attr_delete )
74                         break;
75         }
76
77         if ( glue_attr_delete ) {
78                 Attribute       **app = &e->e_attrs;
79                 while ( *app != NULL ) {
80                         if ( !is_at_operational( (*app)->a_desc->ad_type )) {
81                                 Attribute *save = *app;
82                                 *app = (*app)->a_next;
83                                 attr_free( save );
84                                 continue;
85                         }
86                         app = &(*app)->a_next;
87                 }
88         }
89
90         for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
91                 mod = &ml->sml_mod;
92
93                 switch ( mod->sm_op ) {
94                 case LDAP_MOD_ADD:
95                         Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: add\n", 0, 0, 0);
96                         err = modify_add_values( e, mod, get_permissiveModify(op),
97                                 text, textbuf, textlen );
98                         if( err != LDAP_SUCCESS ) {
99                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
100                                         err, *text, 0);
101                         }
102                         break;
103
104                 case LDAP_MOD_DELETE:
105                         if ( glue_attr_delete ) {
106                                 err = LDAP_SUCCESS;
107                                 break;
108                         }
109
110                         Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: delete\n", 0, 0, 0);
111                         err = modify_delete_values( e, mod, get_permissiveModify(op),
112                                 text, textbuf, textlen );
113                         assert( err != LDAP_TYPE_OR_VALUE_EXISTS );
114                         if( err != LDAP_SUCCESS ) {
115                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
116                                         err, *text, 0);
117                         }
118                         break;
119
120                 case LDAP_MOD_REPLACE:
121                         Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: replace\n", 0, 0, 0);
122                         err = modify_replace_values( e, mod, get_permissiveModify(op),
123                                 text, textbuf, textlen );
124                         if( err != LDAP_SUCCESS ) {
125                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
126                                         err, *text, 0);
127                         }
128                         break;
129
130                 case LDAP_MOD_INCREMENT:
131                         Debug(LDAP_DEBUG_ARGS,
132                                 "bdb_modify_internal: increment\n", 0, 0, 0);
133                         err = modify_increment_values( e, mod, get_permissiveModify(op),
134                                 text, textbuf, textlen );
135                         if( err != LDAP_SUCCESS ) {
136                                 Debug(LDAP_DEBUG_ARGS,
137                                         "bdb_modify_internal: %d %s\n",
138                                         err, *text, 0);
139                         }
140                         break;
141
142                 case SLAP_MOD_SOFTADD:
143                         Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: softadd\n", 0, 0, 0);
144                         /* Avoid problems in index_add_mods()
145                          * We need to add index if necessary.
146                          */
147                         mod->sm_op = LDAP_MOD_ADD;
148
149                         err = modify_add_values( e, mod, get_permissiveModify(op),
150                                 text, textbuf, textlen );
151
152                         mod->sm_op = SLAP_MOD_SOFTADD;
153
154                         if ( err == LDAP_TYPE_OR_VALUE_EXISTS ) {
155                                 err = LDAP_SUCCESS;
156                         }
157
158                         if( err != LDAP_SUCCESS ) {
159                                 Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
160                                         err, *text, 0);
161                         }
162                         break;
163
164                 default:
165                         Debug(LDAP_DEBUG_ANY, "bdb_modify_internal: invalid op %d\n",
166                                 mod->sm_op, 0, 0);
167                         *text = "Invalid modify operation";
168                         err = LDAP_OTHER;
169                         Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
170                                 err, *text, 0);
171                 }
172
173                 if ( err != LDAP_SUCCESS ) {
174                         attrs_free( e->e_attrs );
175                         e->e_attrs = save_attrs;
176                         /* unlock entry, delete from cache */
177                         return err; 
178                 }
179
180                 /* If objectClass was modified, reset the flags */
181                 if ( mod->sm_desc == slap_schema.si_ad_objectClass ) {
182                         e->e_ocflags = 0;
183                 }
184
185                 if ( glue_attr_delete ) {
186                         e->e_ocflags = 0;
187                 }
188
189                 /* check if modified attribute was indexed
190                  * but not in case of NOOP... */
191                 err = bdb_index_is_indexed( op->o_bd, mod->sm_desc );
192                 if ( err == LDAP_SUCCESS && !op->o_noop ) {
193                         ap = attr_find( save_attrs, mod->sm_desc );
194                         if ( ap ) ap->a_flags |= SLAP_ATTR_IXDEL;
195
196                         ap = attr_find( e->e_attrs, mod->sm_desc );
197                         if ( ap ) ap->a_flags |= SLAP_ATTR_IXADD;
198                 }
199         }
200
201         /* check that the entry still obeys the schema */
202         rc = entry_schema_check( op->o_bd, e, save_attrs, text, textbuf, textlen );
203         if ( rc != LDAP_SUCCESS || op->o_noop ) {
204                 attrs_free( e->e_attrs );
205                 /* clear the indexing flags */
206                 for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
207                         ap->a_flags = 0;
208                 }
209                 e->e_attrs = save_attrs;
210
211                 if ( rc != LDAP_SUCCESS ) {
212                         Debug( LDAP_DEBUG_ANY,
213                                 "entry failed schema check: %s\n",
214                                 *text, 0, 0 );
215                 }
216
217                 /* if NOOP then silently revert to saved attrs */
218                 return rc;
219         }
220
221         /* update the indices of the modified attributes */
222
223         /* start with deleting the old index entries */
224         for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
225                 if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
226                         rc = bdb_index_values( op, tid, ap->a_desc,
227                                 ap->a_nvals,
228                                 e->e_id, SLAP_INDEX_DELETE_OP );
229                         if ( rc != LDAP_SUCCESS ) {
230                                 attrs_free( e->e_attrs );
231                                 e->e_attrs = save_attrs;
232                                 Debug( LDAP_DEBUG_ANY,
233                                        "Attribute index delete failure",
234                                        0, 0, 0 );
235                                 return rc;
236                         }
237                         ap->a_flags &= ~SLAP_ATTR_IXDEL;
238                 }
239         }
240
241         /* add the new index entries */
242         for ( ap = e->e_attrs; ap != NULL; ap = ap->a_next ) {
243                 if (ap->a_flags & SLAP_ATTR_IXADD) {
244                         rc = bdb_index_values( op, tid, ap->a_desc,
245                                 ap->a_nvals,
246                                 e->e_id, SLAP_INDEX_ADD_OP );
247                         if ( rc != LDAP_SUCCESS ) {
248                                 attrs_free( e->e_attrs );
249                                 e->e_attrs = save_attrs;
250                                 Debug( LDAP_DEBUG_ANY,
251                                        "Attribute index add failure",
252                                        0, 0, 0 );
253                                 return rc;
254                         }
255                         ap->a_flags &= ~SLAP_ATTR_IXADD;
256                 }
257         }
258
259         return rc;
260 }
261
262
263 int
264 bdb_modify( Operation *op, SlapReply *rs )
265 {
266         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
267         Entry           *e = NULL;
268         EntryInfo       *ei = NULL;
269         int             manageDSAit = get_manageDSAit( op );
270         char textbuf[SLAP_TEXT_BUFLEN];
271         size_t textlen = sizeof textbuf;
272         DB_TXN  *ltid = NULL, *lt2;
273         struct bdb_op_info opinfo;
274         Entry           dummy = {0};
275
276         u_int32_t       locker = 0;
277         DB_LOCK         lock;
278
279         int             num_retries = 0;
280
281         LDAPControl **preread_ctrl = NULL;
282         LDAPControl **postread_ctrl = NULL;
283         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
284         int num_ctrls = 0;
285
286         Operation* ps_list;
287         struct psid_entry *pm_list, *pm_prev;
288         int rc;
289         EntryInfo       *suffix_ei;
290         Entry           *ctxcsn_e;
291         int                     ctxcsn_added = 0;
292
293         Debug( LDAP_DEBUG_ARGS, LDAP_XSTRING(bdb_modify) ": %s\n",
294                 op->o_req_dn.bv_val, 0, 0 );
295
296         ctrls[num_ctrls] = NULL;
297
298         if( 0 ) {
299 retry:  /* transaction retry */
300                 if ( dummy.e_attrs ) {
301                         attrs_free( dummy.e_attrs );
302                         dummy.e_attrs = NULL;
303                 }
304                 if( e != NULL ) {
305                         bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
306                         e = NULL;
307                 }
308                 Debug(LDAP_DEBUG_TRACE,
309                         LDAP_XSTRING(bdb_modify) ": retrying...\n", 0, 0, 0);
310
311                 pm_list = LDAP_LIST_FIRST(&op->o_pm_list);
312                 while ( pm_list != NULL ) {
313                         LDAP_LIST_REMOVE ( pm_list, ps_link );
314                         pm_prev = pm_list;
315                         pm_list = LDAP_LIST_NEXT ( pm_list, ps_link );
316                         ch_free( pm_prev );
317                 }
318
319                 rs->sr_err = TXN_ABORT( ltid );
320                 ltid = NULL;
321                 op->o_private = NULL;
322                 op->o_do_not_cache = opinfo.boi_acl_cache;
323                 if( rs->sr_err != 0 ) {
324                         rs->sr_err = LDAP_OTHER;
325                         rs->sr_text = "internal error";
326                         goto return_results;
327                 }
328                 ldap_pvt_thread_yield();
329                 bdb_trans_backoff( ++num_retries );
330         }
331
332         /* begin transaction */
333         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid, 
334                 bdb->bi_db_opflags );
335         rs->sr_text = NULL;
336         if( rs->sr_err != 0 ) {
337                 Debug( LDAP_DEBUG_TRACE,
338                         LDAP_XSTRING(bdb_modify) ": txn_begin failed: "
339                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
340                 rs->sr_err = LDAP_OTHER;
341                 rs->sr_text = "internal error";
342                 goto return_results;
343         }
344
345         locker = TXN_ID ( ltid );
346
347         opinfo.boi_bdb = op->o_bd;
348         opinfo.boi_txn = ltid;
349         opinfo.boi_locker = locker;
350         opinfo.boi_err = 0;
351         opinfo.boi_acl_cache = op->o_do_not_cache;
352         op->o_private = &opinfo;
353
354         /* get entry or ancestor */
355         rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
356                 locker, &lock );
357
358         if ( rs->sr_err != 0 ) {
359                 Debug( LDAP_DEBUG_TRACE,
360                         LDAP_XSTRING(bdb_modify) ": dn2entry failed (%d)\n",
361                         rs->sr_err, 0, 0 );
362                 switch( rs->sr_err ) {
363                 case DB_LOCK_DEADLOCK:
364                 case DB_LOCK_NOTGRANTED:
365                         goto retry;
366                 case DB_NOTFOUND:
367                         break;
368                 case LDAP_BUSY:
369                         rs->sr_text = "ldap server busy";
370                         goto return_results;
371                 default:
372                         rs->sr_err = LDAP_OTHER;
373                         rs->sr_text = "internal error";
374                         goto return_results;
375                 }
376         }
377
378         e = ei->bei_e;
379         /* acquire and lock entry */
380         /* FIXME: dn2entry() should return non-glue entry */
381         if (( rs->sr_err == DB_NOTFOUND ) ||
382                 ( !manageDSAit && e && is_entry_glue( e )))
383         {
384                 BerVarray deref = NULL;
385                 if ( e != NULL ) {
386                         rs->sr_matched = ch_strdup( e->e_dn );
387                         rs->sr_ref = is_entry_referral( e )
388                                 ? get_entry_referrals( op, e )
389                                 : NULL;
390                         bdb_unlocked_cache_return_entry_r (&bdb->bi_cache, e);
391                         e = NULL;
392
393                 } else {
394                         if ( !LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
395                                 syncinfo_t *si;
396                                 LDAP_STAILQ_FOREACH( si, &op->o_bd->be_syncinfo, si_next ) {
397                                         struct berval tmpbv;
398                                         ber_dupbv( &tmpbv, &si->si_provideruri_bv[0] );
399                                         ber_bvarray_add( &deref, &tmpbv );
400                 }
401                         } else {
402                                 deref = default_referral;
403                         }
404                         rs->sr_ref = referral_rewrite( deref, NULL, &op->o_req_dn,
405                                         LDAP_SCOPE_DEFAULT );
406                 }
407
408                 rs->sr_err = LDAP_REFERRAL;
409                 send_ldap_result( op, rs );
410
411                 if ( rs->sr_ref != default_referral ) {
412                         ber_bvarray_free( rs->sr_ref );
413                 }
414                 if ( deref != default_referral ) {
415                         ber_bvarray_free( deref );
416                 }
417                 free( (char *)rs->sr_matched );
418                 rs->sr_ref = NULL;
419                 rs->sr_matched = NULL;
420
421                 goto done;
422         }
423
424         if ( !manageDSAit && is_entry_referral( e ) ) {
425                 /* entry is a referral, don't allow modify */
426                 rs->sr_ref = get_entry_referrals( op, e );
427
428                 Debug( LDAP_DEBUG_TRACE,
429                         LDAP_XSTRING(bdb_modify) ": entry is referral\n",
430                         0, 0, 0 );
431
432                 rs->sr_err = LDAP_REFERRAL;
433                 rs->sr_matched = e->e_name.bv_val;
434                 send_ldap_result( op, rs );
435
436                 ber_bvarray_free( rs->sr_ref );
437                 rs->sr_ref = NULL;
438                 rs->sr_matched = NULL;
439                 goto done;
440         }
441
442         if ( get_assert( op ) &&
443                 ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
444         {
445                 rs->sr_err = LDAP_ASSERTION_FAILED;
446                 goto return_results;
447         }
448
449         if ( rs->sr_err == LDAP_SUCCESS && !op->o_noop && !op->o_no_psearch ) {
450                 ldap_pvt_thread_rdwr_wlock( &bdb->bi_pslist_rwlock );
451                 LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
452                         rc = bdb_psearch(op, rs, ps_list, e, LDAP_PSEARCH_BY_PREMODIFY );
453                         if ( rc ) {
454                                 Debug( LDAP_DEBUG_TRACE,
455                                         LDAP_XSTRING(bdb_modify)
456                                         ": persistent search failed (%d,%d)\n",
457                                         rc, rs->sr_err, 0 );
458                         }
459                 }
460                 ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
461         }
462
463         if( op->o_preread ) {
464                 if( preread_ctrl == NULL ) {
465                         preread_ctrl = &ctrls[num_ctrls++];
466                         ctrls[num_ctrls] = NULL;
467                 }
468                 if ( slap_read_controls( op, rs, e,
469                         &slap_pre_read_bv, preread_ctrl ) )
470                 {
471                         Debug( LDAP_DEBUG_TRACE,
472                                 "<=- " LDAP_XSTRING(bdb_modify)
473                                 ": pre-read failed!\n", 0, 0, 0 );
474                         goto return_results;
475                 }
476         }
477
478         /* nested transaction */
479         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2, 
480                 bdb->bi_db_opflags );
481         rs->sr_text = NULL;
482         if( rs->sr_err != 0 ) {
483                 Debug( LDAP_DEBUG_TRACE,
484                         LDAP_XSTRING(bdb_modify) ": txn_begin(2) failed: "
485                         "%s (%d)\n",
486                         db_strerror(rs->sr_err), rs->sr_err, 0 );
487                 rs->sr_err = LDAP_OTHER;
488                 rs->sr_text = "internal error";
489                 goto return_results;
490         }
491         /* Modify the entry */
492         dummy = *e;
493         rs->sr_err = bdb_modify_internal( op, lt2, op->oq_modify.rs_modlist,
494                 &dummy, &rs->sr_text, textbuf, textlen );
495
496         if( rs->sr_err != LDAP_SUCCESS ) {
497                 Debug( LDAP_DEBUG_TRACE,
498                         LDAP_XSTRING(bdb_modify) ": modify failed (%d)\n",
499                         rs->sr_err, 0, 0 );
500                 if ( (rs->sr_err == LDAP_INSUFFICIENT_ACCESS) && opinfo.boi_err ) {
501                         rs->sr_err = opinfo.boi_err;
502                 }
503                 /* Only free attrs if they were dup'd.  */
504                 if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
505                 switch( rs->sr_err ) {
506                 case DB_LOCK_DEADLOCK:
507                 case DB_LOCK_NOTGRANTED:
508                         goto retry;
509                 }
510                 goto return_results;
511         }
512
513         /* change the entry itself */
514         rs->sr_err = bdb_id2entry_update( op->o_bd, lt2, &dummy );
515         if ( rs->sr_err != 0 ) {
516                 Debug( LDAP_DEBUG_TRACE,
517                         LDAP_XSTRING(bdb_modify) ": id2entry update failed "
518                         "(%d)\n", rs->sr_err, 0, 0 );
519                 switch( rs->sr_err ) {
520                 case DB_LOCK_DEADLOCK:
521                 case DB_LOCK_NOTGRANTED:
522                         goto retry;
523                 }
524                 rs->sr_text = "entry update failed";
525                 goto return_results;
526         }
527
528         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
529                 rs->sr_err = LDAP_OTHER;
530                 rs->sr_text = "txn_commit(2) failed";
531                 goto return_results;
532         }
533
534         if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
535                 rc = bdb_csn_commit( op, rs, ltid, ei, &suffix_ei,
536                         &ctxcsn_e, &ctxcsn_added, locker );
537                 switch ( rc ) {
538                 case BDB_CSN_ABORT :
539                         goto return_results;
540                 case BDB_CSN_RETRY :
541                         goto retry;
542                 }
543         }
544
545         if( op->o_postread ) {
546                 if( postread_ctrl == NULL ) {
547                         postread_ctrl = &ctrls[num_ctrls++];
548                         ctrls[num_ctrls] = NULL;
549                 }
550                 if( slap_read_controls( op, rs, &dummy,
551                         &slap_post_read_bv, postread_ctrl ) )
552                 {
553                         Debug( LDAP_DEBUG_TRACE,
554                                 "<=- " LDAP_XSTRING(bdb_modify)
555                                 ": post-read failed!\n", 0, 0, 0 );
556                         goto return_results;
557                 }
558         }
559
560         if( op->o_noop ) {
561                 if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
562                         rs->sr_text = "txn_abort (no-op) failed";
563                 } else {
564                         rs->sr_err = LDAP_NO_OPERATION;
565                         goto return_results;
566                 }
567         } else {
568                 rc = bdb_cache_modify( e, dummy.e_attrs, bdb->bi_dbenv, locker, &lock );
569                 switch( rc ) {
570                 case DB_LOCK_DEADLOCK:
571                 case DB_LOCK_NOTGRANTED:
572                         goto retry;
573                 }
574                 dummy.e_attrs = NULL;
575
576                 if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
577                         if ( ctxcsn_added ) {
578                                 bdb_cache_add( bdb, suffix_ei, ctxcsn_e,
579                                         (struct berval *)&slap_ldapsync_cn_bv, locker );
580                         }
581                 }
582
583                 if ( rs->sr_err == LDAP_SUCCESS ) {
584                         /* Loop through in-scope entries for each psearch spec */
585                         ldap_pvt_thread_rdwr_wlock( &bdb->bi_pslist_rwlock );
586                         LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
587                                 rc = bdb_psearch( op, rs, ps_list, e, LDAP_PSEARCH_BY_MODIFY );
588                                 if ( rc ) {
589                                         Debug( LDAP_DEBUG_TRACE,
590                                                 LDAP_XSTRING(bdb_modify)
591                                                 ": persistent search failed "
592                                                 "(%d,%d)\n",
593                                                 rc, rs->sr_err, 0 );
594                                 }
595                         }
596                         pm_list = LDAP_LIST_FIRST(&op->o_pm_list);
597                         while ( pm_list != NULL ) {
598                                 rc = bdb_psearch(op, rs, pm_list->ps_op,
599                                                         e, LDAP_PSEARCH_BY_SCOPEOUT);
600                                 if ( rc ) {
601                                         Debug( LDAP_DEBUG_TRACE,
602                                                 LDAP_XSTRING(bdb_modify)
603                                                 ": persistent search failed "
604                                                 "(%d,%d)\n",
605                                                 rc, rs->sr_err, 0 );
606                                 }
607                                 LDAP_LIST_REMOVE ( pm_list, ps_link );
608                                 pm_prev = pm_list;
609                                 pm_list = LDAP_LIST_NEXT ( pm_list, ps_link );
610                                 ch_free( pm_prev );
611                         }
612                         ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
613                 }
614
615                 rs->sr_err = TXN_COMMIT( ltid, 0 );
616         }
617         ltid = NULL;
618         op->o_private = NULL;
619
620         if( rs->sr_err != 0 ) {
621                 Debug( LDAP_DEBUG_TRACE,
622                         LDAP_XSTRING(bdb_modify) ": txn_%s failed: %s (%d)\n",
623                         op->o_noop ? "abort (no-op)" : "commit",
624                         db_strerror(rs->sr_err), rs->sr_err );
625                 rs->sr_err = LDAP_OTHER;
626                 rs->sr_text = "commit failed";
627
628                 goto return_results;
629         }
630
631         Debug( LDAP_DEBUG_TRACE,
632                 LDAP_XSTRING(bdb_modify) ": updated%s id=%08lx dn=\"%s\"\n",
633                 op->o_noop ? " (no-op)" : "",
634                 dummy.e_id, op->o_req_dn.bv_val );
635
636         rs->sr_err = LDAP_SUCCESS;
637         rs->sr_text = NULL;
638         if( num_ctrls ) rs->sr_ctrls = ctrls;
639
640 return_results:
641         if( dummy.e_attrs ) {
642                 attrs_free( dummy.e_attrs );
643         }
644         send_ldap_result( op, rs );
645
646         if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp ) {
647                 ldap_pvt_thread_yield();
648                 TXN_CHECKPOINT( bdb->bi_dbenv,
649                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
650         }
651
652 done:
653         if( ltid != NULL ) {
654                 pm_list = LDAP_LIST_FIRST(&op->o_pm_list);
655                 while ( pm_list != NULL ) {
656                         LDAP_LIST_REMOVE ( pm_list, ps_link );
657                         pm_prev = pm_list;
658                         pm_list = LDAP_LIST_NEXT ( pm_list, ps_link );
659                         ch_free( pm_prev );
660                 }
661                 TXN_ABORT( ltid );
662                 op->o_private = NULL;
663         }
664
665         if( e != NULL ) {
666                 bdb_unlocked_cache_return_entry_w (&bdb->bi_cache, e);
667         }
668
669         if( preread_ctrl != NULL ) {
670                 slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
671                 slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
672         }
673         if( postread_ctrl != NULL ) {
674                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
675                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
676         }
677         return rs->sr_err;
678 }