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Commit 8aa05e92 authored by Howard Chu's avatar Howard Chu
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ITS#7302 fix mdb_dn2id_delete

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servers/slapd/back-mdb/dn2id.c
+ 2
− 449
View file @ 8aa05e92
......@@ -71,64 +71,6 @@ mdb_dup_compare(
return strncmp( un->nrdn, cn->nrdn, nrlen );
}
#if 0
/* This function constructs a full DN for a given entry.
*/
int mdb_fix_dn(
Entry *e,
int checkit )
{
EntryInfo *ei;
int rlen = 0, nrlen = 0;
char *ptr, *nptr;
int max = 0;
if ( !e->e_id )
return 0;
/* count length of all DN components */
for ( ei = BEI(e); ei && ei->bei_id; ei=ei->bei_parent ) {
rlen += ei->bei_rdn.bv_len + 1;
nrlen += ei->bei_nrdn.bv_len + 1;
if (ei->bei_modrdns > max) max = ei->bei_modrdns;
}
/* See if the entry DN was invalidated by a subtree rename */
if ( checkit ) {
if ( BEI(e)->bei_modrdns >= max ) {
return 0;
}
/* We found a mismatch, tell the caller to lock it */
if ( checkit == 1 ) {
return 1;
}
/* checkit == 2. do the fix. */
free( e->e_name.bv_val );
free( e->e_nname.bv_val );
}
e->e_name.bv_len = rlen - 1;
e->e_nname.bv_len = nrlen - 1;
e->e_name.bv_val = ch_malloc(rlen);
e->e_nname.bv_val = ch_malloc(nrlen);
ptr = e->e_name.bv_val;
nptr = e->e_nname.bv_val;
for ( ei = BEI(e); ei && ei->bei_id; ei=ei->bei_parent ) {
ptr = lutil_strcopy(ptr, ei->bei_rdn.bv_val);
nptr = lutil_strcopy(nptr, ei->bei_nrdn.bv_val);
if ( ei->bei_parent ) {
*ptr++ = ',';
*nptr++ = ',';
}
}
BEI(e)->bei_modrdns = max;
if ( ptr > e->e_name.bv_val ) ptr[-1] = '\0';
if ( nptr > e->e_nname.bv_val ) nptr[-1] = '\0';
return 0;
}
#endif
/* We add two elements to the DN2ID database - a data item under the parent's
* entryID containing the child's RDN and entryID, and an item under the
* child's entryID containing the parent's entryID.
......@@ -227,10 +169,10 @@ mdb_dn2id_delete(
* for modrdn, which will add our info back in later.
*/
if ( rc == 0 ) {
MDB_val key;
MDB_val key, data;
key.mv_size = sizeof(ID);
key.mv_data = &id;
rc = mdb_cursor_get( mc, &key, NULL, MDB_SET );
rc = mdb_cursor_get( mc, &key, &data, MDB_SET );
if ( rc == 0 )
rc = mdb_cursor_del( mc, 0 );
}
......@@ -469,65 +411,6 @@ done:
return rc;
}
#if 0
int
mdb_dn2id_parent(
Operation *op,
DB_TXN *txn,
EntryInfo *ei,
ID *idp )
{
struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private;
DB *db = mdb->bi_dn2id->bdi_db;
DBT key, data;
DBC *cursor;
int rc = 0;
diskNode *d;
char *ptr;
ID nid;
DBTzero(&key);
key.size = sizeof(ID);
key.data = &nid;
key.ulen = sizeof(ID);
key.flags = DB_DBT_USERMEM;
MDB_ID2DISK( ei->bei_id, &nid );
DBTzero(&data);
data.flags = DB_DBT_USERMEM;
rc = db->cursor( db, txn, &cursor, mdb->bi_db_opflags );
if ( rc ) return rc;
data.ulen = sizeof(diskNode) + (SLAP_LDAPDN_MAXLEN * 2);
d = op->o_tmpalloc( data.ulen, op->o_tmpmemctx );
data.data = d;
rc = cursor->c_get( cursor, &key, &data, DB_SET );
if ( rc == 0 ) {
if (d->nrdnlen[0] & 0x80) {
rc = LDAP_OTHER;
} else {
db_recno_t dkids;
ptr = (char *) data.data + data.size - sizeof(ID);
MDB_DISK2ID( ptr, idp );
ei->bei_nrdn.bv_len = (d->nrdnlen[0] << 8) | d->nrdnlen[1];
ber_str2bv( d->nrdn, ei->bei_nrdn.bv_len, 1, &ei->bei_nrdn );
ei->bei_rdn.bv_len = data.size - sizeof(diskNode) -
ei->bei_nrdn.bv_len;
ptr = d->nrdn + ei->bei_nrdn.bv_len + 1;
ber_str2bv( ptr, ei->bei_rdn.bv_len, 1, &ei->bei_rdn );
/* How many children does this node have? */
cursor->c_count( cursor, &dkids, 0 );
ei->bei_dkids = dkids;
}
}
cursor->c_close( cursor );
op->o_tmpfree( d, op->o_tmpmemctx );
return rc;
}
#endif
int
mdb_dn2id_children(
Operation *op,
......@@ -768,333 +651,3 @@ mdb_idscopes(
}
return MDB_NOTFOUND;
}
#if 0
/* mdb_dn2idl:
* We can't just use mdb_idl_fetch_key because
* 1 - our data items are longer than just an entry ID
* 2 - our data items are sorted alphabetically by nrdn, not by ID.
*
* We descend the tree recursively, so we define this cookie
* to hold our necessary state information. The mdb_dn2idl_internal
* function uses this cookie when calling itself.
*/
struct dn2id_cookie {
struct mdb_info *mdb;
Operation *op;
DB_TXN *txn;
EntryInfo *ei;
ID *ids;
ID *tmp;
ID *buf;
DB *db;
DBC *dbc;
DBT key;
DBT data;
ID dbuf;
ID id;
ID nid;
int rc;
int depth;
char need_sort;
char prefix;
};
static int
apply_func(
void *data,
void *arg )
{
EntryInfo *ei = data;
ID *idl = arg;
mdb_idl_append_one( idl, ei->bei_id );
return 0;
}
static int
mdb_dn2idl_internal(
struct dn2id_cookie *cx
)
{
MDB_IDL_ZERO( cx->tmp );
if ( cx->mdb->bi_idl_cache_size ) {
char *ptr = ((char *)&cx->id)-1;
cx->key.data = ptr;
cx->key.size = sizeof(ID)+1;
if ( cx->prefix == DN_SUBTREE_PREFIX ) {
ID *ids = cx->depth ? cx->tmp : cx->ids;
*ptr = cx->prefix;
cx->rc = mdb_idl_cache_get(cx->mdb, cx->db, &cx->key, ids);
if ( cx->rc == LDAP_SUCCESS ) {
if ( cx->depth ) {
mdb_idl_append( cx->ids, cx->tmp );
cx->need_sort = 1;
}
return cx->rc;
}
}
*ptr = DN_ONE_PREFIX;
cx->rc = mdb_idl_cache_get(cx->mdb, cx->db, &cx->key, cx->tmp);
if ( cx->rc == LDAP_SUCCESS ) {
goto gotit;
}
if ( cx->rc == DB_NOTFOUND ) {
return cx->rc;
}
}
mdb_cache_entryinfo_lock( cx->ei );
/* If number of kids in the cache differs from on-disk, load
* up all the kids from the database
*/
if ( cx->ei->bei_ckids+1 != cx->ei->bei_dkids ) {
EntryInfo ei;
db_recno_t dkids = cx->ei->bei_dkids;
ei.bei_parent = cx->ei;
/* Only one thread should load the cache */
while ( cx->ei->bei_state & CACHE_ENTRY_ONELEVEL ) {
mdb_cache_entryinfo_unlock( cx->ei );
ldap_pvt_thread_yield();
mdb_cache_entryinfo_lock( cx->ei );
if ( cx->ei->bei_ckids+1 == cx->ei->bei_dkids ) {
goto synced;
}
}
cx->ei->bei_state |= CACHE_ENTRY_ONELEVEL;
mdb_cache_entryinfo_unlock( cx->ei );
cx->rc = cx->db->cursor( cx->db, NULL, &cx->dbc,
cx->mdb->bi_db_opflags );
if ( cx->rc )
goto done_one;
cx->data.data = &cx->dbuf;
cx->data.ulen = sizeof(ID);
cx->data.dlen = sizeof(ID);
cx->data.flags = DB_DBT_USERMEM | DB_DBT_PARTIAL;
/* The first item holds the parent ID. Ignore it. */
cx->key.data = &cx->nid;
cx->key.size = sizeof(ID);
cx->rc = cx->dbc->c_get( cx->dbc, &cx->key, &cx->data, DB_SET );
if ( cx->rc ) {
cx->dbc->c_close( cx->dbc );
goto done_one;
}
/* If the on-disk count is zero we've never checked it.
* Count it now.
*/
if ( !dkids ) {
cx->dbc->c_count( cx->dbc, &dkids, 0 );
cx->ei->bei_dkids = dkids;
}
cx->data.data = cx->buf;
cx->data.ulen = MDB_IDL_UM_SIZE * sizeof(ID);
cx->data.flags = DB_DBT_USERMEM;
if ( dkids > 1 ) {
/* Fetch the rest of the IDs in a loop... */
while ( (cx->rc = cx->dbc->c_get( cx->dbc, &cx->key, &cx->data,
DB_MULTIPLE | DB_NEXT_DUP )) == 0 ) {
uint8_t *j;
size_t len;
void *ptr;
DB_MULTIPLE_INIT( ptr, &cx->data );
while (ptr) {
DB_MULTIPLE_NEXT( ptr, &cx->data, j, len );
if (j) {
EntryInfo *ei2;
diskNode *d = (diskNode *)j;
short nrlen;
MDB_DISK2ID( j + len - sizeof(ID), &ei.bei_id );
nrlen = ((d->nrdnlen[0] ^ 0x80) << 8) | d->nrdnlen[1];
ei.bei_nrdn.bv_len = nrlen;
/* nrdn/rdn are set in-place.
* mdb_cache_load will copy them as needed
*/
ei.bei_nrdn.bv_val = d->nrdn;
ei.bei_rdn.bv_len = len - sizeof(diskNode)
- ei.bei_nrdn.bv_len;
ei.bei_rdn.bv_val = d->nrdn + ei.bei_nrdn.bv_len + 1;
mdb_idl_append_one( cx->tmp, ei.bei_id );
mdb_cache_load( cx->mdb, &ei, &ei2 );
}
}
}
}
cx->rc = cx->dbc->c_close( cx->dbc );
done_one:
mdb_cache_entryinfo_lock( cx->ei );
cx->ei->bei_state &= ~CACHE_ENTRY_ONELEVEL;
mdb_cache_entryinfo_unlock( cx->ei );
if ( cx->rc )
return cx->rc;
} else {
/* The in-memory cache is in sync with the on-disk data.
* do we have any kids?
*/
synced:
cx->rc = 0;
if ( cx->ei->bei_ckids > 0 ) {
/* Walk the kids tree; order is irrelevant since mdb_idl_sort
* will sort it later.
*/
avl_apply( cx->ei->bei_kids, apply_func,
cx->tmp, -1, AVL_POSTORDER );
}
mdb_cache_entryinfo_unlock( cx->ei );
}
if ( !MDB_IDL_IS_RANGE( cx->tmp ) && cx->tmp[0] > 3 )
mdb_idl_sort( cx->tmp, cx->buf );
if ( cx->mdb->bi_idl_cache_max_size && !MDB_IDL_IS_ZERO( cx->tmp )) {
char *ptr = ((char *)&cx->id)-1;
cx->key.data = ptr;
cx->key.size = sizeof(ID)+1;
*ptr = DN_ONE_PREFIX;
mdb_idl_cache_put( cx->mdb, cx->db, &cx->key, cx->tmp, cx->rc );
}
gotit:
if ( !MDB_IDL_IS_ZERO( cx->tmp )) {
if ( cx->prefix == DN_SUBTREE_PREFIX ) {
mdb_idl_append( cx->ids, cx->tmp );
cx->need_sort = 1;
if ( !(cx->ei->bei_state & CACHE_ENTRY_NO_GRANDKIDS)) {
ID *save, idcurs;
EntryInfo *ei = cx->ei;
int nokids = 1;
save = cx->op->o_tmpalloc( MDB_IDL_SIZEOF( cx->tmp ),
cx->op->o_tmpmemctx );
MDB_IDL_CPY( save, cx->tmp );
idcurs = 0;
cx->depth++;
for ( cx->id = mdb_idl_first( save, &idcurs );
cx->id != NOID;
cx->id = mdb_idl_next( save, &idcurs )) {
EntryInfo *ei2;
cx->ei = NULL;
if ( mdb_cache_find_id( cx->op, cx->txn, cx->id, &cx->ei,
ID_NOENTRY, NULL ))
continue;
if ( cx->ei ) {
ei2 = cx->ei;
if ( !( ei2->bei_state & CACHE_ENTRY_NO_KIDS )) {
MDB_ID2DISK( cx->id, &cx->nid );
mdb_dn2idl_internal( cx );
if ( !MDB_IDL_IS_ZERO( cx->tmp ))
nokids = 0;
}
mdb_cache_entryinfo_lock( ei2 );
ei2->bei_finders--;
mdb_cache_entryinfo_unlock( ei2 );
}
}
cx->depth--;
cx->op->o_tmpfree( save, cx->op->o_tmpmemctx );
if ( nokids ) {
mdb_cache_entryinfo_lock( ei );
ei->bei_state |= CACHE_ENTRY_NO_GRANDKIDS;
mdb_cache_entryinfo_unlock( ei );
}
}
/* Make sure caller knows it had kids! */
cx->tmp[0]=1;
cx->rc = 0;
} else {
MDB_IDL_CPY( cx->ids, cx->tmp );
}
}
return cx->rc;
}
int
mdb_dn2idl(
Operation *op,
DB_TXN *txn,
struct berval *ndn,
EntryInfo *ei,
ID *ids,
ID *stack )
{
struct mdb_info *mdb = (struct mdb_info *)op->o_bd->be_private;
struct dn2id_cookie cx;
Debug( LDAP_DEBUG_TRACE, "=> mdb_dn2idl(\"%s\")\n",
ndn->bv_val, 0, 0 );
#ifndef MDB_MULTIPLE_SUFFIXES
if ( op->ors_scope != LDAP_SCOPE_ONELEVEL &&
( ei->bei_id == 0 ||
( ei->bei_parent->bei_id == 0 && op->o_bd->be_suffix[0].bv_len )))
{
MDB_IDL_ALL( mdb, ids );
return 0;
}
#endif
cx.id = ei->bei_id;
MDB_ID2DISK( cx.id, &cx.nid );
cx.ei = ei;
cx.mdb = mdb;
cx.db = cx.mdb->bi_dn2id->bdi_db;
cx.prefix = (op->ors_scope == LDAP_SCOPE_ONELEVEL) ?
DN_ONE_PREFIX : DN_SUBTREE_PREFIX;
cx.ids = ids;
cx.tmp = stack;
cx.buf = stack + MDB_IDL_UM_SIZE;
cx.op = op;
cx.txn = txn;
cx.need_sort = 0;
cx.depth = 0;
if ( cx.prefix == DN_SUBTREE_PREFIX ) {
ids[0] = 1;
ids[1] = cx.id;
} else {
MDB_IDL_ZERO( ids );
}
if ( cx.ei->bei_state & CACHE_ENTRY_NO_KIDS )
return LDAP_SUCCESS;
DBTzero(&cx.key);
cx.key.ulen = sizeof(ID);
cx.key.size = sizeof(ID);
cx.key.flags = DB_DBT_USERMEM;
DBTzero(&cx.data);
mdb_dn2idl_internal(&cx);
if ( cx.need_sort ) {
char *ptr = ((char *)&cx.id)-1;
if ( !MDB_IDL_IS_RANGE( cx.ids ) && cx.ids[0] > 3 )
mdb_idl_sort( cx.ids, cx.tmp );
cx.key.data = ptr;
cx.key.size = sizeof(ID)+1;
*ptr = cx.prefix;
cx.id = ei->bei_id;
if ( cx.mdb->bi_idl_cache_max_size )
mdb_idl_cache_put( cx.mdb, cx.db, &cx.key, cx.ids, cx.rc );
}
if ( cx.rc == DB_NOTFOUND )
cx.rc = LDAP_SUCCESS;
return cx.rc;
}
#endif
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