/* delete.c - bdb backend delete routine */ /* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * 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 * . */ #include "portable.h" #include #include #include "back-bdb.h" #include "external.h" int bdb_delete( Operation *op, SlapReply *rs ) { struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private; Entry *matched = NULL; struct berval pdn = {0, NULL}; Entry *e = NULL; Entry *p = NULL; EntryInfo *ei = NULL, *eip = NULL; int manageDSAit = get_manageDSAit( op ); AttributeDescription *children = slap_schema.si_ad_children; AttributeDescription *entry = slap_schema.si_ad_entry; DB_TXN *ltid = NULL, *lt2; struct bdb_op_info opinfo; u_int32_t locker = 0; DB_LOCK lock, plock; int num_retries = 0; Operation* ps_list; int rc; EntryInfo *suffix_ei; Entry *ctxcsn_e; int ctxcsn_added = 0; LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS]; int num_ctrls = 0; int parent_is_glue = 0; int parent_is_leaf = 0; #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, ARGS, "==> bdb_delete: %s\n", op->o_req_dn.bv_val, 0, 0 ); #else Debug( LDAP_DEBUG_ARGS, "==> bdb_delete: %s\n", op->o_req_dn.bv_val, 0, 0 ); #endif if( 0 ) { retry: /* transaction retry */ if( e != NULL ) { bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e); e = NULL; } #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, DETAIL1, "==> bdb_delete: retrying...\n", 0, 0, 0 ); #else Debug( LDAP_DEBUG_TRACE, "==> bdb_delete: retrying...\n", 0, 0, 0 ); #endif rs->sr_err = TXN_ABORT( ltid ); ltid = NULL; op->o_private = NULL; op->o_do_not_cache = opinfo.boi_acl_cache; if( rs->sr_err != 0 ) { rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; goto return_results; } parent_is_glue = 0; parent_is_leaf = 0; ldap_pvt_thread_yield(); bdb_trans_backoff( ++num_retries ); } /* begin transaction */ rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, <id, bdb->bi_db_opflags ); rs->sr_text = NULL; if( rs->sr_err != 0 ) { #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, ERR, "==> bdb_delete: txn_begin failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #else Debug( LDAP_DEBUG_TRACE, "bdb_delete: txn_begin failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #endif rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; goto return_results; } locker = TXN_ID ( ltid ); opinfo.boi_bdb = op->o_bd; opinfo.boi_txn = ltid; opinfo.boi_locker = locker; opinfo.boi_err = 0; opinfo.boi_acl_cache = op->o_do_not_cache; op->o_private = &opinfo; if ( !be_issuffix( op->o_bd, &op->o_req_ndn ) ) { dnParent( &op->o_req_ndn, &pdn ); } /* get entry */ rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1, locker, &lock ); switch( rs->sr_err ) { case 0: case DB_NOTFOUND: break; case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; case LDAP_BUSY: rs->sr_text = "ldap server busy"; goto return_results; default: rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; goto return_results; } if ( rs->sr_err == 0 ) { e = ei->bei_e; eip = ei->bei_parent; } else { matched = ei->bei_e; } /* FIXME : dn2entry() should return non-glue entry */ if ( e == NULL || ( !manageDSAit && is_entry_glue( e ))) { #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, ARGS, "<=- bdb_delete: no such object %s\n", op->o_req_dn.bv_val, 0, 0); #else Debug( LDAP_DEBUG_ARGS, "<=- bdb_delete: no such object %s\n", op->o_req_dn.bv_val, 0, 0); #endif if ( matched != NULL ) { rs->sr_matched = ch_strdup( matched->e_dn ); rs->sr_ref = is_entry_referral( matched ) ? get_entry_referrals( op, matched ) : NULL; bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, matched); matched = NULL; } else { 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 ); 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; rs->sr_err = -1; goto done; } bdb_cache_find_id( op, ltid, eip->bei_id, &eip, 0, locker, &plock ); if ( eip ) p = eip->bei_e; if ( pdn.bv_len != 0 ) { if( p == NULL || !bvmatch( &pdn, &p->e_nname )) { #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, DETAIL1, "<=- bdb_delete: parent does not exist\n", 0, 0, 0 ); #else Debug( LDAP_DEBUG_TRACE, "<=- bdb_delete: parent does not exist\n", 0, 0, 0); #endif rs->sr_err = LDAP_OTHER; rs->sr_text = "could not locate parent of entry"; goto return_results; } /* check parent for "children" acl */ rs->sr_err = access_allowed( op, p, children, NULL, ACL_WRITE, NULL ); bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p); p = NULL; if ( !rs->sr_err ) { switch( opinfo.boi_err ) { case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; } #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, DETAIL1, "<=- bdb_delete: no write access to parent\n", 0, 0, 0 ); #else Debug( LDAP_DEBUG_TRACE, "<=- bdb_delete: no write access to parent\n", 0, 0, 0 ); #endif rs->sr_err = LDAP_INSUFFICIENT_ACCESS; rs->sr_text = "no write access to parent"; goto return_results; } } else { /* no parent, must be root to delete */ if( ! be_isroot( op ) ) { if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv ) || be_isupdate( op ) || syncrepl_isupdate( op ) ) { p = (Entry *)&slap_entry_root; /* check parent for "children" acl */ rs->sr_err = access_allowed( op, p, children, NULL, ACL_WRITE, NULL ); p = NULL; if ( !rs->sr_err ) { switch( opinfo.boi_err ) { case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; } #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, DETAIL1, "<=- bdb_delete: no access to parent\n", 0, 0, 0 ); #else Debug( LDAP_DEBUG_TRACE, "<=- bdb_delete: no access " "to parent\n", 0, 0, 0 ); #endif rs->sr_err = LDAP_INSUFFICIENT_ACCESS; rs->sr_text = "no write access to parent"; goto return_results; } } else { #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, DETAIL1, "<=- bdb_delete: no parent and not root\n", 0, 0, 0 ); #else Debug( LDAP_DEBUG_TRACE, "<=- bdb_delete: no parent " "and not root\n", 0, 0, 0); #endif rs->sr_err = LDAP_INSUFFICIENT_ACCESS; goto return_results; } } } if ( get_assert( op ) && ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE )) { rs->sr_err = LDAP_ASSERTION_FAILED; goto return_results; } rs->sr_err = access_allowed( op, e, entry, NULL, ACL_WRITE, NULL ); if ( !rs->sr_err ) { switch( opinfo.boi_err ) { case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; } #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, DETAIL1, "<=- bdb_delete: no write access to entry\n", 0, 0, 0 ); #else Debug( LDAP_DEBUG_TRACE, "<=- bdb_delete: no write access to entry\n", 0, 0, 0 ); #endif rs->sr_err = LDAP_INSUFFICIENT_ACCESS; rs->sr_text = "no write access to entry"; goto return_results; } if ( !manageDSAit && is_entry_referral( e ) ) { /* entry is a referral, don't allow delete */ rs->sr_ref = get_entry_referrals( op, e ); #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, DETAIL1, "<=- bdb_delete: entry is referral\n", 0, 0, 0 ); #else Debug( LDAP_DEBUG_TRACE, "bdb_delete: entry is referral\n", 0, 0, 0 ); #endif rs->sr_err = LDAP_REFERRAL; rs->sr_matched = e->e_name.bv_val; send_ldap_result( op, rs ); ber_bvarray_free( rs->sr_ref ); rs->sr_ref = NULL; rs->sr_matched = NULL; rs->sr_err = 1; goto done; } /* pre-read */ if( op->o_preread ) { if( slap_read_controls( op, rs, e, &slap_pre_read_bv, &ctrls[num_ctrls] ) ) { #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, DETAIL1, "<=- bdb_delete: pre-read failed!\n", 0, 0, 0 ); #else Debug( LDAP_DEBUG_TRACE, "<=- bdb_delete: pre-read failed!\n", 0, 0, 0 ); #endif goto return_results; } ctrls[++num_ctrls] = NULL; } /* nested transaction */ rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, <2, bdb->bi_db_opflags ); rs->sr_text = NULL; if( rs->sr_err != 0 ) { #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, ERR, "bdb_delete: txn_begin(2) failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #else Debug( LDAP_DEBUG_TRACE, "bdb_delete: txn_begin(2) failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #endif rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; goto return_results; } /* Can't do it if we have kids */ rs->sr_err = bdb_cache_children( op, lt2, e ); if( rs->sr_err != DB_NOTFOUND ) { switch( rs->sr_err ) { case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; case 0: #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, DETAIL1, "<=- bdb_delete: non-leaf %s\n", op->o_req_dn.bv_val, 0, 0 ); #else Debug(LDAP_DEBUG_ARGS, "<=- bdb_delete: non-leaf %s\n", op->o_req_dn.bv_val, 0, 0); #endif rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF; rs->sr_text = "subtree delete not supported"; break; default: #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, ERR, "<=- bdb_delete: has_children failed %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #else Debug(LDAP_DEBUG_ARGS, "<=- bdb_delete: has_children failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #endif rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; } goto return_results; } /* delete from dn2id */ rs->sr_err = bdb_dn2id_delete( op, lt2, eip, e ); if ( rs->sr_err != 0 ) { #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, ERR, "<=- bdb_delete: dn2id failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #else Debug(LDAP_DEBUG_TRACE, "<=- bdb_delete: dn2id failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #endif switch( rs->sr_err ) { case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; } rs->sr_text = "DN index delete failed"; rs->sr_err = LDAP_OTHER; goto return_results; } /* delete from id2entry */ rs->sr_err = bdb_id2entry_delete( op->o_bd, lt2, e ); if ( rs->sr_err != 0 ) { #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, ERR, "<=- bdb_delete: id2entry failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #else Debug(LDAP_DEBUG_TRACE, "<=- bdb_delete: id2entry failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #endif switch( rs->sr_err ) { case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; } rs->sr_text = "entry delete failed"; rs->sr_err = LDAP_OTHER; goto return_results; } /* delete indices for old attributes */ rs->sr_err = bdb_index_entry_del( op, lt2, e ); if ( rs->sr_err != LDAP_SUCCESS ) { #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, ERR, "<=- bdb_delete: index failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #else Debug( LDAP_DEBUG_TRACE, "<=- bdb_delete: index failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #endif switch( rs->sr_err ) { case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; } rs->sr_text = "entry index delete failed"; rs->sr_err = LDAP_OTHER; goto return_results; } bdb_cache_find_id( op, lt2, eip->bei_id, &eip, 0, locker, &plock ); if ( eip ) p = eip->bei_e; if ( pdn.bv_len != 0 ) { parent_is_glue = is_entry_glue(p); rs->sr_err = bdb_cache_children( op, lt2, p ); if ( rs->sr_err != DB_NOTFOUND ) { switch( rs->sr_err ) { case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; case 0: break; default: #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, ERR, "<=- bdb_delete: has_children failed %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #else Debug(LDAP_DEBUG_ARGS, "<=- bdb_delete: has_children failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); #endif rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; goto return_results; } parent_is_leaf = 1; } bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p); p = NULL; } if ( TXN_COMMIT( lt2, 0 ) != 0 ) { rs->sr_err = LDAP_OTHER; rs->sr_text = "txn_commit(2) failed"; goto return_results; } #if 0 /* Do we want to reclaim deleted IDs? */ ldap_pvt_thread_mutex_lock( &bdb->bi_lastid_mutex ); if ( e->e_id == bdb->bi_lastid ) { bdb_last_id( op->o_bd, ltid ); } ldap_pvt_thread_mutex_unlock( &bdb->bi_lastid_mutex ); #endif 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 ) { case BDB_CSN_ABORT : goto return_results; case BDB_CSN_RETRY : goto retry; } } if( op->o_noop ) { if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) { rs->sr_text = "txn_abort (no-op) failed"; } else { rs->sr_err = LDAP_NO_OPERATION; goto return_results; } } else { bdb_cache_delete( &bdb->bi_cache, e, bdb->bi_dbenv, locker, &lock ); if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) { if ( ctxcsn_added ) { bdb_cache_add( bdb, suffix_ei, ctxcsn_e, (struct berval *)&slap_ldapsync_cn_bv, locker ); } } if ( rs->sr_err == LDAP_SUCCESS && !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_DELETE ); } ldap_pvt_thread_rdwr_runlock( &bdb->bi_pslist_rwlock ); } rs->sr_err = TXN_COMMIT( ltid, 0 ); } ltid = NULL; op->o_private = NULL; if( rs->sr_err != 0 ) { #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, ERR, "bdb_delete: txn_%s failed: %s (%d)\n", op->o_noop ? "abort (no-op)" : "commit", db_strerror(rs->sr_err), rs->sr_err ); #else Debug( LDAP_DEBUG_TRACE, "bdb_delete: txn_%s failed: %s (%d)\n", op->o_noop ? "abort (no-op)" : "commit", db_strerror(rs->sr_err), rs->sr_err ); #endif rs->sr_err = LDAP_OTHER; rs->sr_text = "commit failed"; goto return_results; } #ifdef NEW_LOGGING LDAP_LOG ( OPERATION, RESULTS, "bdb_delete: deleted%s id=%08lx db=\"%s\"\n", op->o_noop ? " (no-op)" : "", e->e_id, e->e_dn ); #else Debug( LDAP_DEBUG_TRACE, "bdb_delete: deleted%s id=%08lx dn=\"%s\"\n", op->o_noop ? " (no-op)" : "", e->e_id, e->e_dn ); #endif rs->sr_err = LDAP_SUCCESS; rs->sr_text = NULL; if( num_ctrls ) rs->sr_ctrls = ctrls; return_results: send_ldap_result( op, rs ); if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp ) { ldap_pvt_thread_yield(); TXN_CHECKPOINT( bdb->bi_dbenv, bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 ); } if ( rs->sr_err == LDAP_SUCCESS && parent_is_glue && parent_is_leaf ) { op->o_delete_glue_parent = 1; } done: /* free entry */ if( e != NULL ) { if ( rs->sr_err == LDAP_SUCCESS ) { /* Free the EntryInfo and the Entry */ bdb_cache_delete_cleanup( &bdb->bi_cache, e ); } else { bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e); } } if( ltid != NULL ) { TXN_ABORT( ltid ); op->o_private = NULL; } return rs->sr_err; }