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openldap/servers/slapd/back-bdb/modify.c

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/* modify.c - bdb backend modify routine */
/* $OpenLDAP$ */
/* 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 <stdio.h>
#include <ac/string.h>
#include <ac/time.h>
#include "back-bdb.h"
#include "external.h"
static struct berval scbva[] = {
BER_BVC("glue"),
BER_BVNULL
};
int bdb_modify_internal(
Operation *op,
DB_TXN *tid,
Modifications *modlist,
Entry *e,
const char **text,
char *textbuf,
size_t textlen )
{
int rc, err;
Modification *mod;
Modifications *ml;
Attribute *save_attrs;
Attribute *ap;
int glue_attr_delete = 0;
Debug( LDAP_DEBUG_TRACE, "bdb_modify_internal: 0x%08lx: %s\n",
e->e_id, e->e_dn, 0);
if ( !acl_check_modlist( op, e, modlist )) {
return LDAP_INSUFFICIENT_ACCESS;
}
/* save_attrs will be disposed of by bdb_cache_modify */
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;
switch ( mod->sm_op ) {
case LDAP_MOD_ADD:
Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: add\n", 0, 0, 0);
err = modify_add_values( e, mod, get_permissiveModify(op),
text, textbuf, textlen );
if( err != LDAP_SUCCESS ) {
Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
err, *text, 0);
}
break;
case LDAP_MOD_DELETE:
if ( glue_attr_delete ) {
err = LDAP_SUCCESS;
break;
}
Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: delete\n", 0, 0, 0);
err = modify_delete_values( e, mod, get_permissiveModify(op),
text, textbuf, textlen );
assert( err != LDAP_TYPE_OR_VALUE_EXISTS );
if( err != LDAP_SUCCESS ) {
Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
err, *text, 0);
}
break;
case LDAP_MOD_REPLACE:
Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: replace\n", 0, 0, 0);
err = modify_replace_values( e, mod, get_permissiveModify(op),
text, textbuf, textlen );
if( err != LDAP_SUCCESS ) {
Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
err, *text, 0);
}
break;
case LDAP_MOD_INCREMENT:
Debug(LDAP_DEBUG_ARGS,
"bdb_modify_internal: increment\n", 0, 0, 0);
err = modify_increment_values( e, mod, get_permissiveModify(op),
text, textbuf, textlen );
if( err != LDAP_SUCCESS ) {
Debug(LDAP_DEBUG_ARGS,
"bdb_modify_internal: %d %s\n",
err, *text, 0);
}
break;
case SLAP_MOD_SOFTADD:
Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: softadd\n", 0, 0, 0);
/* Avoid problems in index_add_mods()
* We need to add index if necessary.
*/
mod->sm_op = LDAP_MOD_ADD;
err = modify_add_values( e, mod, get_permissiveModify(op),
text, textbuf, textlen );
mod->sm_op = SLAP_MOD_SOFTADD;
if ( err == LDAP_TYPE_OR_VALUE_EXISTS ) {
err = LDAP_SUCCESS;
}
if( err != LDAP_SUCCESS ) {
Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
err, *text, 0);
}
break;
default:
Debug(LDAP_DEBUG_ANY, "bdb_modify_internal: invalid op %d\n",
mod->sm_op, 0, 0);
*text = "Invalid modify operation";
err = LDAP_OTHER;
Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n",
err, *text, 0);
}
if ( err != LDAP_SUCCESS ) {
attrs_free( e->e_attrs );
e->e_attrs = save_attrs;
/* unlock entry, delete from cache */
return err;
}
/* If objectClass was modified, reset the flags */
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 */
rc = entry_schema_check( op->o_bd, e, save_attrs, text, textbuf, textlen );
if ( rc != LDAP_SUCCESS || op->o_noop ) {
attrs_free( e->e_attrs );
/* clear the indexing flags */
for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
ap->a_flags = 0;
}
e->e_attrs = save_attrs;
if ( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_ANY,
"entry failed schema check: %s\n",
*text, 0, 0 );
}
/* if NOOP then silently revert to saved attrs */
return rc;
}
/* update the indices of the modified attributes */
/* 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;
Debug( LDAP_DEBUG_ANY,
"Attribute index delete failure",
0, 0, 0 );
return rc;
}
ap->a_flags &= ~SLAP_ATTR_IXDEL;
}
}
/* 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;
Debug( LDAP_DEBUG_ANY,
"Attribute index add failure",
0, 0, 0 );
return rc;
}
ap->a_flags &= ~SLAP_ATTR_IXADD;
}
}
return rc;
}
int
bdb_modify( Operation *op, SlapReply *rs )
{
struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
Entry *e = NULL;
EntryInfo *ei = NULL;
int manageDSAit = get_manageDSAit( op );
char textbuf[SLAP_TEXT_BUFLEN];
size_t textlen = sizeof textbuf;
DB_TXN *ltid = NULL, *lt2;
struct bdb_op_info opinfo;
Entry dummy = {0};
u_int32_t locker = 0;
DB_LOCK lock;
int num_retries = 0;
LDAPControl **preread_ctrl = NULL;
LDAPControl **postread_ctrl = NULL;
LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
int num_ctrls = 0;
Operation* ps_list;
struct psid_entry *pm_list, *pm_prev;
int rc;
EntryInfo *suffix_ei;
Entry *ctxcsn_e;
int ctxcsn_added = 0;
Debug( LDAP_DEBUG_ARGS, "bdb_modify: %s\n",
op->o_req_dn.bv_val, 0, 0 );
ctrls[num_ctrls] = NULL;
if( 0 ) {
retry: /* transaction retry */
if ( dummy.e_attrs ) {
attrs_free( dummy.e_attrs );
dummy.e_attrs = NULL;
}
if( e != NULL ) {
bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
e = NULL;
}
Debug(LDAP_DEBUG_TRACE,
"bdb_modify: retrying...\n", 0, 0, 0);
pm_list = LDAP_LIST_FIRST(&op->o_pm_list);
while ( pm_list != NULL ) {
LDAP_LIST_REMOVE ( pm_list, ps_link );
pm_prev = pm_list;
pm_list = LDAP_LIST_NEXT ( pm_list, ps_link );
ch_free( pm_prev );
}
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;
}
ldap_pvt_thread_yield();
bdb_trans_backoff( ++num_retries );
}
/* begin transaction */
rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
bdb->bi_db_opflags );
rs->sr_text = NULL;
if( rs->sr_err != 0 ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modify: txn_begin failed: %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
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;
/* get entry or ancestor */
rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
locker, &lock );
if ( rs->sr_err != 0 ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modify: dn2entry failed (%d)\n",
rs->sr_err, 0, 0 );
switch( rs->sr_err ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
case DB_NOTFOUND:
break;
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;
}
}
e = ei->bei_e;
/* acquire and lock entry */
/* FIXME: dn2entry() should return non-glue entry */
if (( rs->sr_err == DB_NOTFOUND ) ||
( !manageDSAit && e && is_entry_glue( e )))
{
BerVarray deref = NULL;
if ( e != NULL ) {
rs->sr_matched = ch_strdup( e->e_dn );
rs->sr_ref = is_entry_referral( e )
? get_entry_referrals( op, e )
: NULL;
bdb_unlocked_cache_return_entry_r (&bdb->bi_cache, e);
e = NULL;
} else {
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 );
}
if ( deref != default_referral ) {
ber_bvarray_free( deref );
}
free( (char *)rs->sr_matched );
rs->sr_ref = NULL;
rs->sr_matched = NULL;
goto done;
}
if ( !manageDSAit && is_entry_referral( e ) ) {
/* entry is a referral, don't allow modify */
rs->sr_ref = get_entry_referrals( op, e );
Debug( LDAP_DEBUG_TRACE,
"bdb_modify: entry is referral\n",
0, 0, 0 );
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;
goto done;
}
if ( get_assert( op ) &&
( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
{
rs->sr_err = LDAP_ASSERTION_FAILED;
goto return_results;
}
if ( rs->sr_err == LDAP_SUCCESS && !op->o_noop && !op->o_no_psearch ) {
ldap_pvt_thread_rdwr_wlock( &bdb->bi_pslist_rwlock );
LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
rc = bdb_psearch(op, rs, ps_list, e, LDAP_PSEARCH_BY_PREMODIFY );
if ( rc ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modify: persistent search failed (%d,%d)\n",
rc, rs->sr_err, 0 );
}
}
ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
}
if( op->o_preread ) {
if( preread_ctrl == NULL ) {
preread_ctrl = &ctrls[num_ctrls++];
ctrls[num_ctrls] = NULL;
}
if ( slap_read_controls( op, rs, e,
&slap_pre_read_bv, preread_ctrl ) )
{
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_modify: pre-read failed!\n", 0, 0, 0 );
goto return_results;
}
}
/* nested transaction */
rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
bdb->bi_db_opflags );
rs->sr_text = NULL;
if( rs->sr_err != 0 ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modify: txn_begin(2) failed: %s (%d)\n",
db_strerror(rs->sr_err), rs->sr_err, 0 );
rs->sr_err = LDAP_OTHER;
rs->sr_text = "internal error";
goto return_results;
}
/* Modify the entry */
dummy = *e;
rs->sr_err = bdb_modify_internal( op, lt2, op->oq_modify.rs_modlist,
&dummy, &rs->sr_text, textbuf, textlen );
if( rs->sr_err != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modify: modify failed (%d)\n",
rs->sr_err, 0, 0 );
if ( (rs->sr_err == LDAP_INSUFFICIENT_ACCESS) && opinfo.boi_err ) {
rs->sr_err = opinfo.boi_err;
}
/* Only free attrs if they were dup'd. */
if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
switch( rs->sr_err ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
goto return_results;
}
/* change the entry itself */
rs->sr_err = bdb_id2entry_update( op->o_bd, lt2, &dummy );
if ( rs->sr_err != 0 ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modify: id2entry update failed (%d)\n",
rs->sr_err, 0, 0 );
switch( rs->sr_err ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
rs->sr_text = "entry update failed";
goto return_results;
}
if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
rs->sr_err = LDAP_OTHER;
rs->sr_text = "txn_commit(2) failed";
goto return_results;
}
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_postread ) {
if( postread_ctrl == NULL ) {
postread_ctrl = &ctrls[num_ctrls++];
ctrls[num_ctrls] = NULL;
}
if( slap_read_controls( op, rs, &dummy,
&slap_post_read_bv, postread_ctrl ) )
{
Debug( LDAP_DEBUG_TRACE,
"<=- bdb_modify: post-read failed!\n", 0, 0, 0 );
goto return_results;
}
}
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 {
rc = bdb_cache_modify( e, dummy.e_attrs, bdb->bi_dbenv, locker, &lock );
switch( rc ) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
dummy.e_attrs = NULL;
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 ) {
/* Loop through in-scope entries for each psearch spec */
ldap_pvt_thread_rdwr_wlock( &bdb->bi_pslist_rwlock );
LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
rc = bdb_psearch( op, rs, ps_list, e, LDAP_PSEARCH_BY_MODIFY );
if ( rc ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modify: persistent search failed (%d,%d)\n",
rc, rs->sr_err, 0 );
}
}
pm_list = LDAP_LIST_FIRST(&op->o_pm_list);
while ( pm_list != NULL ) {
rc = bdb_psearch(op, rs, pm_list->ps_op,
e, LDAP_PSEARCH_BY_SCOPEOUT);
if ( rc ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modify: persistent search failed (%d,%d)\n",
rc, rs->sr_err, 0 );
}
LDAP_LIST_REMOVE ( pm_list, ps_link );
pm_prev = pm_list;
pm_list = LDAP_LIST_NEXT ( pm_list, ps_link );
ch_free( pm_prev );
}
ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
}
rs->sr_err = TXN_COMMIT( ltid, 0 );
}
ltid = NULL;
op->o_private = NULL;
if( rs->sr_err != 0 ) {
Debug( LDAP_DEBUG_TRACE,
"bdb_modify: txn_%s failed: %s (%d)\n",
op->o_noop ? "abort (no-op)" : "commit",
db_strerror(rs->sr_err), rs->sr_err );
rs->sr_err = LDAP_OTHER;
rs->sr_text = "commit failed";
goto return_results;
}
Debug( LDAP_DEBUG_TRACE,
"bdb_modify: updated%s id=%08lx dn=\"%s\"\n",
op->o_noop ? " (no-op)" : "",
e->e_id, e->e_dn );
rs->sr_err = LDAP_SUCCESS;
rs->sr_text = NULL;
if( num_ctrls ) rs->sr_ctrls = ctrls;
return_results:
if( dummy.e_attrs ) {
attrs_free( dummy.e_attrs );
}
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 );
}
done:
if( ltid != NULL ) {
pm_list = LDAP_LIST_FIRST(&op->o_pm_list);
while ( pm_list != NULL ) {
LDAP_LIST_REMOVE ( pm_list, ps_link );
pm_prev = pm_list;
pm_list = LDAP_LIST_NEXT ( pm_list, ps_link );
ch_free( pm_prev );
}
TXN_ABORT( ltid );
op->o_private = NULL;
}
if( e != NULL ) {
bdb_unlocked_cache_return_entry_w (&bdb->bi_cache, e);
}
if( preread_ctrl != NULL ) {
slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, &op->o_tmpmemctx );
slap_sl_free( *preread_ctrl, &op->o_tmpmemctx );
}
if( postread_ctrl != NULL ) {
slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, &op->o_tmpmemctx );
slap_sl_free( *postread_ctrl, &op->o_tmpmemctx );
}
return rs->sr_err;
}
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