]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/back-bdb/modify.c
Sync with HEAD as of 14-March-2004
[openldap] / servers / slapd / back-bdb / modify.c
index 68806a7859a6d512825da2a1b716d2cf17389771..bc3e7ab48c63be92d058e35ed55befa808f96d4d 100644 (file)
@@ -1,8 +1,17 @@
 /* modify.c - bdb backend modify routine */
 /* $OpenLDAP$ */
-/*
- * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2004 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
  */
 
 #include "portable.h"
 #include "back-bdb.h"
 #include "external.h"
 
-#define INDEXED        0x2000
-#define NULLIFIED      0x4000
+static struct berval scbva[] = {
+       BER_BVC("glue"),
+       BER_BVNULL
+};
 
 int bdb_modify_internal(
        Operation *op,
@@ -31,6 +42,7 @@ int bdb_modify_internal(
        Modifications   *ml;
        Attribute       *save_attrs;
        Attribute       *ap;
+       int                     glue_attr_delete = 0;
 
 #ifdef NEW_LOGGING
        LDAP_LOG ( OPERATION, ENTRY, "bdb_modify_internal: 0x%08lx: %s\n", 
@@ -48,6 +60,38 @@ int bdb_modify_internal(
        save_attrs = e->e_attrs;
        e->e_attrs = attrs_dup( e->e_attrs );
 
+       for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
+               int match;
+               mod = &ml->sml_mod;
+               switch( mod->sm_op ) {
+               case LDAP_MOD_ADD:
+               case LDAP_MOD_REPLACE:
+                       if ( mod->sm_desc == slap_schema.si_ad_structuralObjectClass ) {
+                               value_match( &match, slap_schema.si_ad_structuralObjectClass,
+                               slap_schema.si_ad_structuralObjectClass->ad_type->sat_equality,
+                               SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
+                               &mod->sm_values[0], &scbva[0], text );
+                               if ( !match )
+                                       glue_attr_delete = 1;
+                       }
+               }
+               if ( glue_attr_delete )
+                       break;
+       }
+
+       if ( glue_attr_delete ) {
+               Attribute       **app = &e->e_attrs;
+               while ( *app != NULL ) {
+                       if ( !is_at_operational( (*app)->a_desc->ad_type )) {
+                               Attribute *save = *app;
+                               *app = (*app)->a_next;
+                               attr_free( save );
+                               continue;
+                       }
+                       app = &(*app)->a_next;
+               }
+       }
+
        for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
                mod = &ml->sml_mod;
 
@@ -72,6 +116,8 @@ int bdb_modify_internal(
                        break;
 
                case LDAP_MOD_DELETE:
+                       if ( glue_attr_delete )
+                               break;
 #ifdef NEW_LOGGING
                        LDAP_LOG ( OPERATION, DETAIL1, 
                                "bdb_modify_internal: delete\n", 0, 0, 0 );
@@ -196,6 +242,21 @@ int bdb_modify_internal(
                if ( mod->sm_desc == slap_schema.si_ad_objectClass ) {
                        e->e_ocflags = 0;
                }
+
+               if ( glue_attr_delete ) {
+                       e->e_ocflags = 0;
+               }
+
+               /* check if modified attribute was indexed
+                * but not in case of NOOP... */
+               err = bdb_index_is_indexed( op->o_bd, mod->sm_desc );
+               if ( err == LDAP_SUCCESS && !op->o_noop ) {
+                       ap = attr_find( save_attrs, mod->sm_desc );
+                       if ( ap ) ap->a_flags |= SLAP_ATTR_IXDEL;
+
+                       ap = attr_find( e->e_attrs, mod->sm_desc );
+                       if ( ap ) ap->a_flags |= SLAP_ATTR_IXADD;
+               }
        }
 
        /* check that the entry still obeys the schema */
@@ -221,86 +282,52 @@ int bdb_modify_internal(
        }
 
        /* update the indices of the modified attributes */
-       if ( !op->o_noop ) {
-               Modifications *m2;
-
-               /* First look for any deletes that would nullify any adds
-                * in this request. I.e., deleting an entire attribute after
-                * assigning some values to it.
-                */
-               for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
-                       if (bdb_index_is_indexed( op->o_bd, ml->sml_desc ))
-                               continue;
-                       switch ( ml->sml_op ) {
-                       case LDAP_MOD_DELETE:
-                               /* If just deleting specific values, ignore */
-                               if ( ml->sml_bvalues ) break;
-                       case LDAP_MOD_REPLACE:
-                               for ( m2 = modlist; m2 != ml; m2 = m2->sml_next ) {
-                                       if ( m2->sml_desc == ml->sml_desc &&
-                                               m2->sml_op != LDAP_MOD_DELETE )
-                                               m2->sml_op |= NULLIFIED;
-                               }
-                               break;
+
+       /* start with deleting the old index entries */
+       for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
+               if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
+                       rc = bdb_index_values( op, tid, ap->a_desc,
+                               ap->a_nvals,
+                               e->e_id, SLAP_INDEX_DELETE_OP );
+                       if ( rc != LDAP_SUCCESS ) {
+                               attrs_free( e->e_attrs );
+                               e->e_attrs = save_attrs;
+#ifdef NEW_LOGGING
+                               LDAP_LOG ( OPERATION, ERR, 
+                                       "bdb_modify_internal: attribute index delete failure\n",
+                                       0, 0, 0 );
+#else
+                               Debug( LDAP_DEBUG_ANY,
+                                      "Attribute index delete failure",
+                                      0, 0, 0 );
+#endif
+                               return rc;
                        }
-                       ml->sml_op |= INDEXED;
+                       ap->a_flags &= ~SLAP_ATTR_IXDEL;
                }
-               /* Now index the modifications */
-               for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
-                       if ( ! (ml->sml_op & INDEXED) ) continue;
-                       ml->sml_op ^= INDEXED;
-                       switch ( ml->sml_op ) {
-                       case LDAP_MOD_DELETE:
-                               if ( ml->sml_bvalues ) {
-                                       ap = attr_find( e->e_attrs, ml->sml_desc );
-                                       rc = bdb_index_values( op, tid, ml->sml_desc,
-                                               ml->sml_nvalues ? ml->sml_nvalues : ml->sml_bvalues,
-                                               ap ? ap->a_nvals : NULL,
-                                               e->e_id, SLAP_INDEX_DELETE_OP );
-                                       break;
-                               }
-                               /* FALLTHRU */
-                       case LDAP_MOD_REPLACE:
-                       /* A nullified replace still does its delete action */
-                       case LDAP_MOD_REPLACE | NULLIFIED:
-                               ap = attr_find( save_attrs, ml->sml_desc );
-                               if ( ap != NULL ) {
-                                       rc = bdb_index_values( op, tid, ap->a_desc,
-                                               ap->a_nvals, NULL,
-                                               e->e_id, SLAP_INDEX_DELETE_OP );
-                               } else {
-                                       rc = LDAP_SUCCESS;
-                               }
-                               if ( rc || ml->sml_op == LDAP_MOD_DELETE ||
-                                       (ml->sml_op & NULLIFIED))
-                                       break;
-                               /* FALLTHRU */
-                       case LDAP_MOD_ADD:
-                       case SLAP_MOD_SOFTADD:
-                               rc = bdb_index_values( op, tid, ml->sml_desc,
-                                       ml->sml_nvalues ? ml->sml_nvalues : ml->sml_bvalues,
-                                       NULL, e->e_id, SLAP_INDEX_ADD_OP );
-                               break;
-                       }
-                       ml->sml_op &= ~NULLIFIED;
+       }
+
+       /* add the new index entries */
+       for ( ap = e->e_attrs; ap != NULL; ap = ap->a_next ) {
+               if (ap->a_flags & SLAP_ATTR_IXADD) {
+                       rc = bdb_index_values( op, tid, ap->a_desc,
+                               ap->a_nvals,
+                               e->e_id, SLAP_INDEX_ADD_OP );
                        if ( rc != LDAP_SUCCESS ) {
                                attrs_free( e->e_attrs );
                                e->e_attrs = save_attrs;
 #ifdef NEW_LOGGING
                                LDAP_LOG ( OPERATION, ERR, 
-                                       "bdb_modify_internal: attribute index update failure\n",
+                                       "bdb_modify_internal: attribute index add failure\n", 
                                        0, 0, 0 );
 #else
                                Debug( LDAP_DEBUG_ANY,
-                                      "Attribute index update failure",
+                                      "Attribute index add failure",
                                       0, 0, 0 );
 #endif
-                               /* reset our flags */
-                               for (; ml; ml=ml->sml_next ) {
-                                       ml->sml_op &= ~(INDEXED | NULLIFIED);
-                               }
-                               break;
+                               return rc;
                        }
+                       ap->a_flags &= ~SLAP_ATTR_IXADD;
                }
        }
 
@@ -324,8 +351,6 @@ bdb_modify( Operation *op, SlapReply *rs )
        u_int32_t       locker = 0;
        DB_LOCK         lock;
 
-       int             noop = 0;
-
        int             num_retries = 0;
 
        LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
@@ -374,8 +399,8 @@ retry:      /* transaction retry */
                        rs->sr_text = "internal error";
                        goto return_results;
                }
-               bdb_trans_backoff( ++num_retries );
                ldap_pvt_thread_yield();
+               bdb_trans_backoff( ++num_retries );
        }
 
        /* begin transaction */
@@ -447,15 +472,27 @@ retry:    /* transaction retry */
                        e = NULL;
 
                } else {
-                       BerVarray deref = op->o_bd->syncinfo ?
-                                                         op->o_bd->syncinfo->provideruri_bv : default_referral;
-                       rs->sr_ref = referral_rewrite( deref, NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
+                       BerVarray deref = NULL;
+                       if ( !LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
+                               syncinfo_t *si;
+                               LDAP_STAILQ_FOREACH( si, &op->o_bd->be_syncinfo, si_next ) {
+                                       struct berval tmpbv;
+                                       ber_dupbv( &tmpbv, &si->si_provideruri_bv[0] );
+                                       ber_bvarray_add( &deref, &tmpbv );
+                }
+                       } else {
+                               deref = default_referral;
+                       }
+                       rs->sr_ref = referral_rewrite( deref, NULL, &op->o_req_dn,
+                               LDAP_SCOPE_DEFAULT );
                }
 
                rs->sr_err = LDAP_REFERRAL;
                send_ldap_result( op, rs );
 
-               ber_bvarray_free( rs->sr_ref );
+               if ( rs->sr_ref != default_referral ) {
+                       ber_bvarray_free( rs->sr_ref );
+               }
                free( (char *)rs->sr_matched );
                rs->sr_ref = NULL;
                rs->sr_matched = NULL;
@@ -492,10 +529,12 @@ retry:    /* transaction retry */
                goto return_results;
        }
 
-       if ( rs->sr_err == LDAP_SUCCESS && !op->o_noop ) {
+       if ( rs->sr_err == LDAP_SUCCESS && !op->o_noop && !op->o_no_psearch ) {
+               ldap_pvt_thread_rdwr_rlock( &bdb->bi_pslist_rwlock );
                LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
                        bdb_psearch(op, rs, ps_list, e, LDAP_PSEARCH_BY_PREMODIFY );
                }
+               ldap_pvt_thread_rdwr_runlock( &bdb->bi_pslist_rwlock );
        }
 
        if( op->o_preread ) {
@@ -601,7 +640,7 @@ retry:      /* transaction retry */
                goto return_results;
        }
 
-       if ( !op->o_bd->syncinfo ) {
+       if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
                rc = bdb_csn_commit( op, rs, ltid, ei, &suffix_ei,
                        &ctxcsn_e, &ctxcsn_added, locker );
                switch ( rc ) {
@@ -616,20 +655,34 @@ retry:    /* transaction retry */
                if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
                        rs->sr_text = "txn_abort (no-op) failed";
                } else {
-                       noop = 1;
-                       rs->sr_err = LDAP_SUCCESS;
+                       rs->sr_err = LDAP_NO_OPERATION;
+                       goto return_results;
                }
        } else {
-               struct berval ctx_nrdn;
-               EntryInfo *ctx_ei;
-
                bdb_cache_modify( e, dummy.e_attrs, bdb->bi_dbenv, locker, &lock );
 
-               if ( !op->o_bd->syncinfo ) {
+               if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
                        if ( ctxcsn_added ) {
-                               ctx_nrdn.bv_val = "cn=ldapsync";
-                               ctx_nrdn.bv_len = strlen( ctx_nrdn.bv_val );
-                               bdb_cache_add( bdb, suffix_ei, ctxcsn_e, &ctx_nrdn, locker );
+                               bdb_cache_add( bdb, suffix_ei, ctxcsn_e,
+                                       (struct berval *)&slap_ldapsync_cn_bv, locker );
+                       }
+               }
+
+               if ( rs->sr_err == LDAP_SUCCESS ) {
+                       /* Loop through in-scope entries for each psearch spec */
+                       ldap_pvt_thread_rdwr_rlock( &bdb->bi_pslist_rwlock );
+                       LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
+                               bdb_psearch( op, rs, ps_list, e, LDAP_PSEARCH_BY_MODIFY );
+                       }
+                       ldap_pvt_thread_rdwr_runlock( &bdb->bi_pslist_rwlock );
+                       pm_list = LDAP_LIST_FIRST(&op->o_pm_list);
+                       while ( pm_list != NULL ) {
+                               bdb_psearch(op, rs, pm_list->ps_op,
+                                                       e, LDAP_PSEARCH_BY_SCOPEOUT);
+                               LDAP_LIST_REMOVE ( pm_list, ps_link );
+                               pm_prev = pm_list;
+                               pm_list = LDAP_LIST_NEXT ( pm_list, ps_link );
+                               ch_free( pm_prev );
                        }
                }
 
@@ -674,22 +727,6 @@ retry:     /* transaction retry */
 return_results:
        send_ldap_result( op, rs );
 
-       if ( rs->sr_err == LDAP_SUCCESS && !op->o_noop ) {
-               /* Loop through in-scope entries for each psearch spec */
-               LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
-                       bdb_psearch( op, rs, ps_list, e, LDAP_PSEARCH_BY_MODIFY );
-               }
-               pm_list = LDAP_LIST_FIRST(&op->o_pm_list);
-               while ( pm_list != NULL ) {
-                       bdb_psearch(op, rs, pm_list->ps_op,
-                                               e, LDAP_PSEARCH_BY_SCOPEOUT);
-                       LDAP_LIST_REMOVE ( pm_list, ps_link );
-                       pm_prev = pm_list;
-                       pm_list = LDAP_LIST_NEXT ( pm_list, ps_link );
-                       ch_free( pm_prev );
-               }
-       }
-
        if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp ) {
                ldap_pvt_thread_yield();
                TXN_CHECKPOINT( bdb->bi_dbenv,
@@ -712,5 +749,5 @@ done:
        if( e != NULL ) {
                bdb_unlocked_cache_return_entry_w (&bdb->bi_cache, e);
        }
-       return ( ( rs->sr_err == LDAP_SUCCESS ) ? noop : rs->sr_err );
+       return rs->sr_err;
 }