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openldap/servers/slapd/back-bdb/dn2id.c
Howard Chu ff9e580d33 Updated BDB_HIER for current API
2002-09-19 06:08:12 +00:00

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/* dn2id.c - routines to deal with the dn2id index */
/* $OpenLDAP$ */
/*
* Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "back-bdb.h"
#include "idl.h"
#include "lutil.h"
#ifndef BDB_HIER
int
bdb_dn2id_add(
BackendDB *be,
DB_TXN *txn,
struct berval *pbv,
Entry *e )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
DB *db = bdb->bi_dn2id->bdi_db;
int rc;
DBT key, data;
char *buf;
struct berval ptr, pdn;
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ARGS, "bdb_dn2id_add( \"%s\", 0x%08lx )\n",
e->e_ndn, (long) e->e_id, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "=> bdb_dn2id_add( \"%s\", 0x%08lx )\n",
e->e_ndn, (long) e->e_id, 0 );
#endif
assert( e->e_id != NOID );
DBTzero( &key );
key.size = e->e_nname.bv_len + 2;
key.ulen = key.size;
key.flags = DB_DBT_USERMEM;
buf = ch_malloc( key.size );
key.data = buf;
buf[0] = DN_BASE_PREFIX;
ptr.bv_val = buf + 1;
ptr.bv_len = e->e_nname.bv_len;
AC_MEMCPY( ptr.bv_val, e->e_nname.bv_val, e->e_nname.bv_len );
ptr.bv_val[ptr.bv_len] = '\0';
DBTzero( &data );
data.data = (char *) &e->e_id;
data.size = sizeof( e->e_id );
/* store it -- don't override */
rc = db->put( db, txn, &key, &data, DB_NOOVERWRITE );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ERR, "bdb_dn2id_add: put failed: %s %d\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_dn2id_add: put failed: %s %d\n",
db_strerror(rc), rc, 0 );
#endif
goto done;
}
if( !be_issuffix( be, &ptr )) {
buf[0] = DN_SUBTREE_PREFIX;
rc = bdb_idl_insert_key( be, db, txn, &key, e->e_id );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ERR,
"=> bdb_dn2id_add: subtree (%s) insert failed: %d\n",
ptr.bv_val, rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"=> bdb_dn2id_add: subtree (%s) insert failed: %d\n",
ptr.bv_val, rc, 0 );
#endif
goto done;
}
dnParent( &ptr, &pdn );
key.size = pdn.bv_len + 2;
key.ulen = key.size;
pdn.bv_val[-1] = DN_ONE_PREFIX;
key.data = pdn.bv_val-1;
ptr = pdn;
rc = bdb_idl_insert_key( be, db, txn, &key, e->e_id );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ERR,
"=> bdb_dn2id_add: parent (%s) insert failed: %d\n",
ptr.bv_val, rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"=> bdb_dn2id_add: parent (%s) insert failed: %d\n",
ptr.bv_val, rc, 0 );
#endif
goto done;
}
}
while( !be_issuffix( be, &ptr )) {
ptr.bv_val[-1] = DN_SUBTREE_PREFIX;
rc = bdb_idl_insert_key( be, db, txn, &key, e->e_id );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ERR,
"=> bdb_dn2id_add: subtree (%s) insert failed: %d\n",
ptr.bv_val, rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"=> bdb_dn2id_add: subtree (%s) insert failed: %d\n",
ptr.bv_val, rc, 0 );
#endif
break;
}
dnParent( &ptr, &pdn );
key.size = pdn.bv_len + 2;
key.ulen = key.size;
key.data = pdn.bv_val - 1;
ptr = pdn;
}
done:
ch_free( buf );
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, RESULTS, "<= bdb_dn2id_add: %d\n", rc, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "<= bdb_dn2id_add: %d\n", rc, 0, 0 );
#endif
return rc;
}
int
bdb_dn2id_delete(
BackendDB *be,
DB_TXN *txn,
char *pdnc,
Entry *e )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
DB *db = bdb->bi_dn2id->bdi_db;
int rc;
DBT key;
char *buf;
struct berval pdn, ptr;
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ARGS,
"=> bdb_dn2id_delete ( \"%s\", 0x%08lx )\n", e->e_ndn, e->e_id, 0);
#else
Debug( LDAP_DEBUG_TRACE, "=> bdb_dn2id_delete( \"%s\", 0x%08lx )\n",
e->e_ndn, e->e_id, 0 );
#endif
DBTzero( &key );
key.size = e->e_nname.bv_len + 2;
buf = ch_malloc( key.size );
key.data = buf;
key.flags = DB_DBT_USERMEM;
buf[0] = DN_BASE_PREFIX;
ptr.bv_val = buf+1;
ptr.bv_len = e->e_nname.bv_len;
AC_MEMCPY( ptr.bv_val, e->e_nname.bv_val, e->e_nname.bv_len );
ptr.bv_val[ptr.bv_len] = '\0';
/* delete it */
rc = db->del( db, txn, &key, 0 );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ERR,
"=> bdb_dn2id_delete: delete failed: %s %d\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_dn2id_delete: delete failed: %s %d\n",
db_strerror(rc), rc, 0 );
#endif
goto done;
}
if( !be_issuffix( be, &ptr )) {
buf[0] = DN_SUBTREE_PREFIX;
rc = db->del( db, txn, &key, 0 );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ERR,
"=> bdb_dn2id_delete: subtree (%s) delete failed: %d\n",
ptr.bv_val, rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"=> bdb_dn2id_delete: subtree (%s) delete failed: %d\n",
ptr.bv_val, rc, 0 );
#endif
goto done;
}
dnParent( &ptr, &pdn );
key.size = pdn.bv_len + 2;
key.ulen = key.size;
pdn.bv_val[-1] = DN_ONE_PREFIX;
key.data = pdn.bv_val - 1;
ptr = pdn;
rc = bdb_idl_delete_key( be, db, txn, &key, e->e_id );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ERR,
"=> bdb_dn2id_delete: parent (%s) delete failed: %d\n",
ptr.bv_val, rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"=> bdb_dn2id_delete: parent (%s) delete failed: %d\n",
ptr.bv_val, rc, 0 );
#endif
goto done;
}
}
while( !be_issuffix( be, &ptr )) {
ptr.bv_val[-1] = DN_SUBTREE_PREFIX;
rc = bdb_idl_delete_key( be, db, txn, &key, e->e_id );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ERR,
"=> bdb_dn2id_delete: subtree (%s) delete failed: %d\n",
ptr.bv_val, rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"=> bdb_dn2id_delete: subtree (%s) delete failed: %d\n",
ptr.bv_val, rc, 0 );
#endif
goto done;
}
dnParent( &ptr, &pdn );
key.size = pdn.bv_len + 2;
key.ulen = key.size;
key.data = pdn.bv_val - 1;
ptr = pdn;
}
done:
ch_free( buf );
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, RESULTS, "<= bdb_dn2id_delete %d\n", rc, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "<= bdb_dn2id_delete %d\n", rc, 0, 0 );
#endif
return rc;
}
int
bdb_dn2id(
BackendDB *be,
DB_TXN *txn,
struct berval *dn,
ID *id,
int flags )
{
int rc;
DBT key, data;
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
DB *db = bdb->bi_dn2id->bdi_db;
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ARGS, "=> bdb_dn2id( \"%s\" )\n", dn->bv_val, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "=> bdb_dn2id( \"%s\" )\n", dn->bv_val, 0, 0 );
#endif
assert (id);
*id = bdb_cache_find_entry_ndn2id(be, &bdb->bi_cache, dn);
if (*id != NOID) {
return 0;
}
DBTzero( &key );
key.size = dn->bv_len + 2;
key.data = ch_malloc( key.size );
((char *)key.data)[0] = DN_BASE_PREFIX;
AC_MEMCPY( &((char *)key.data)[1], dn->bv_val, key.size - 1 );
/* store the ID */
DBTzero( &data );
data.data = id;
data.ulen = sizeof(ID);
data.flags = DB_DBT_USERMEM;
/* fetch it */
rc = db->get( db, txn, &key, &data, bdb->bi_db_opflags | flags);
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ERR, "<= bdb_dn2id: get failed %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "<= bdb_dn2id: get failed: %s (%d)\n",
db_strerror( rc ), rc, 0 );
#endif
} else {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, RESULTS,
"<= bdb_dn2id: got id=0x%08lx\n", *id, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "<= bdb_dn2id: got id=0x%08lx\n",
*id, 0, 0 );
#endif
}
ch_free( key.data );
return rc;
}
int
bdb_dn2id_matched(
BackendDB *be,
DB_TXN *txn,
struct berval *in,
ID *id,
ID *id2,
int flags )
{
int rc;
DBT key, data;
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
DB *db = bdb->bi_dn2id->bdi_db;
char *buf;
struct berval dn;
ID cached_id;
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ARGS,
"=> bdb_dn2id_matched( \"%s\" )\n", in->bv_val, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "=> bdb_dn2id_matched( \"%s\" )\n", in->bv_val, 0, 0 );
#endif
DBTzero( &key );
key.size = in->bv_len + 2;
buf = ch_malloc( key.size );
key.data = buf;
dn.bv_val = buf+1;
dn.bv_len = key.size - 2;
AC_MEMCPY( dn.bv_val, in->bv_val, key.size - 1 );
/* store the ID */
DBTzero( &data );
data.data = id;
data.ulen = sizeof(ID);
data.flags = DB_DBT_USERMEM;
while(1) {
dn.bv_val[-1] = DN_BASE_PREFIX;
*id = NOID;
/* lookup cache */
cached_id = bdb_cache_find_entry_ndn2id(be, &bdb->bi_cache, &dn);
if (cached_id != NOID) {
rc = 0;
*id = cached_id;
if ( dn.bv_val != buf+1 ) {
*id2 = *id;
}
break;
} else {
/* fetch it */
rc = db->get(db, txn, &key, &data, bdb->bi_db_opflags | flags );
}
if( rc == DB_NOTFOUND ) {
struct berval pdn;
if ( ! be_issuffix( be, &dn ) ) {
dnParent( &dn, &pdn );
} else {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, DETAIL1,
"<= bdb_dn2id_matched: no match\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"<= bdb_dn2id_matched: no match\n",
0, 0, 0 );
#endif
break;
}
key.size = pdn.bv_len + 2;
dn = pdn;
key.data = pdn.bv_val - 1;
} else if ( rc == 0 ) {
if( data.size != sizeof( ID ) ) {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, DETAIL1,
"<= bdb_dn2id_matched: get size mismatch:"
"expected %ld, got %ld\n",
(long) sizeof(ID), (long) data.size, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"<= bdb_dn2id_matched: get size mismatch: "
"expected %ld, got %ld\n",
(long) sizeof(ID), (long) data.size, 0 );
#endif
}
if( dn.bv_val != buf+1 ) {
*id2 = *id;
}
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, DETAIL1,
"<= bdb_dn2id_matched: id=0x%08lx: %s %s\n",
(long) *id, *id2 == 0 ? "entry" : "matched", dn.bv_val );
#else
Debug( LDAP_DEBUG_TRACE,
"<= bdb_dn2id_matched: id=0x%08lx: %s %s\n",
(long) *id, *id2 == 0 ? "entry" : "matched", dn.bv_val );
#endif
break;
} else {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ERR,
"<= bdb_dn2id_matched: get failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"<= bdb_dn2id_matched: get failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
break;
}
}
ch_free( buf );
return rc;
}
int
bdb_dn2id_children(
BackendDB *be,
DB_TXN *txn,
struct berval *dn,
int flags )
{
int rc;
DBT key, data;
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
DB *db = bdb->bi_dn2id->bdi_db;
ID id;
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ARGS,
"=> bdb_dn2id_children( %s )\n", dn->bv_val, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "=> bdb_dn2id_children( %s )\n",
dn->bv_val, 0, 0 );
#endif
DBTzero( &key );
key.size = dn->bv_len + 2;
key.data = ch_malloc( key.size );
((char *)key.data)[0] = DN_ONE_PREFIX;
AC_MEMCPY( &((char *)key.data)[1], dn->bv_val, key.size - 1 );
/* we actually could do a empty get... */
DBTzero( &data );
data.data = &id;
data.ulen = sizeof(id);
data.flags = DB_DBT_USERMEM;
data.doff = 0;
data.dlen = sizeof(id);
rc = db->get( db, txn, &key, &data, bdb->bi_db_opflags | flags );
free( key.data );
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, DETAIL1,
"<= bdb_dn2id_children( %s ): %schildren (%d)\n",
dn->bv_val, rc == 0 ? "" : ( rc == DB_NOTFOUND ? "no " :
db_strerror(rc)), rc );
#else
Debug( LDAP_DEBUG_TRACE, "<= bdb_dn2id_children( %s ): %schildren (%d)\n",
dn->bv_val,
rc == 0 ? "" : ( rc == DB_NOTFOUND ? "no " :
db_strerror(rc) ), rc );
#endif
return rc;
}
int
bdb_dn2idl(
BackendDB *be,
struct berval *dn,
int prefix,
ID *ids )
{
int rc;
DBT key;
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
DB *db = bdb->bi_dn2id->bdi_db;
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ARGS,
"=> bdb_dn2ididl( \"%s\" )\n", dn->bv_val, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "=> bdb_dn2idl( \"%s\" )\n", dn->bv_val, 0, 0 );
#endif
if (prefix == DN_SUBTREE_PREFIX && be_issuffix(be, dn))
{
BDB_IDL_ALL(bdb, ids);
return 0;
}
DBTzero( &key );
key.size = dn->bv_len + 2;
key.ulen = key.size;
key.flags = DB_DBT_USERMEM;
key.data = ch_malloc( key.size );
((char *)key.data)[0] = prefix;
AC_MEMCPY( &((char *)key.data)[1], dn->bv_val, key.size - 1 );
rc = bdb_idl_fetch_key( be, db, NULL, &key, ids );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, ERR,
"<= bdb_dn2ididl: get failed: %s (%d)\n", db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"<= bdb_dn2idl: get failed: %s (%d)\n",
db_strerror( rc ), rc, 0 );
#endif
} else {
#ifdef NEW_LOGGING
LDAP_LOG ( INDEX, RESULTS,
"<= bdb_dn2ididl: id=%ld first=%ld last=%ld\n",
(long) ids[0], (long) BDB_IDL_FIRST( ids ),
(long) BDB_IDL_LAST( ids ) );
#else
Debug( LDAP_DEBUG_TRACE,
"<= bdb_dn2idl: id=%ld first=%ld last=%ld\n",
(long) ids[0],
(long) BDB_IDL_FIRST( ids ), (long) BDB_IDL_LAST( ids ) );
#endif
}
ch_free( key.data );
return rc;
}
#else /* BDB_HIER */
/* Experimental management routines for a hierarchically structured backend.
*
* Unsupported! Use at your own risk!
*
* Instead of a dn2id database, we use an id2parent database. Each entry in
* this database is a struct diskNode, containing the ID of the node's parent
* and the RDN of the node.
*/
typedef struct diskNode {
ID parent;
struct berval rdn;
struct berval nrdn;
} diskNode;
/* In bdb_db_open() we call bdb_build_tree() which reads the entire id2parent
* database into memory (into an AVL tree). Next we iterate through each node
* of this tree, connecting each child to its parent. The nodes in this AVL
* tree are a struct idNode. The immediate (Onelevel) children of a node are
* referenced in the i_kids AVL tree. With this arrangement, there is no need
* to maintain the DN_ONE_PREFIX or DN_SUBTREE_PREFIX database keys. Note that
* the DN of an entry is constructed by walking up the list of i_parent
* pointers, so no full DN is stored on disk anywhere. This makes modrdn
* extremely efficient, even when operating on a populated subtree.
*
* The idNode tree is searched directly from the root when performing id to
* entry lookups. The tree is traversed using the i_kids subtrees when
* performing dn to id lookups.
*/
typedef struct idNode {
ID i_id;
struct idNode *i_parent;
diskNode *i_rdn;
Avlnode *i_kids;
ldap_pvt_thread_rdwr_t i_kids_rdwr;
} idNode;
/* The main AVL tree is sorted in ID order. The i_kids AVL trees are
* sorted in lexical order. These are the various helper routines used
* for the searches and sorts.
*/
static int
node_find_cmp(
ID id,
idNode *n
)
{
return id - n->i_id;
}
static int
node_frdn_cmp(
struct berval *nrdn,
idNode *n
)
{
return ber_bvcmp(nrdn, &n->i_rdn->nrdn);
}
static int
node_add_cmp(
idNode *a,
idNode *b
)
{
return a->i_id - b->i_id;
}
static int
node_rdn_cmp(
idNode *a,
idNode *b
)
{
/* should be slightly better without ordering drawbacks */
return ber_bvcmp(&a->i_rdn->nrdn, &b->i_rdn->nrdn);
}
idNode * bdb_find_id_node(
ID id,
Avlnode *tree
)
{
return avl_find(tree, (const void *)id, (AVL_CMP)node_find_cmp);
}
idNode * bdb_find_rdn_node(
struct berval *nrdn,
Avlnode *tree
)
{
return avl_find(tree, (const void *)nrdn, (AVL_CMP)node_frdn_cmp);
}
/* This function links a node into its parent's i_kids tree. */
int bdb_insert_kid(
idNode *a,
Avlnode *tree
)
{
int rc;
if (a->i_rdn->parent == 0)
return 0;
a->i_parent = bdb_find_id_node(a->i_rdn->parent, tree);
if (!a->i_parent)
return -1;
ldap_pvt_thread_rdwr_wlock(&a->i_parent->i_kids_rdwr);
rc = avl_insert( &a->i_parent->i_kids, (caddr_t) a,
(AVL_CMP)node_rdn_cmp, (AVL_DUP) avl_dup_error );
ldap_pvt_thread_rdwr_wunlock(&a->i_parent->i_kids_rdwr);
return rc;
}
/* This function adds a node into the main AVL tree */
idNode *bdb_add_node(
ID id,
char *d,
struct bdb_info *bdb
)
{
idNode *node;
node = (idNode *)ch_malloc(sizeof(idNode));
node->i_id = id;
node->i_parent = NULL;
node->i_kids = NULL;
node->i_rdn = (diskNode *)d;
node->i_rdn->rdn.bv_val += (long)d;
node->i_rdn->nrdn.bv_val += (long)d;
ldap_pvt_thread_rdwr_init(&node->i_kids_rdwr);
avl_insert( &bdb->bi_tree, (caddr_t) node,
(AVL_CMP)node_add_cmp, (AVL_DUP) avl_dup_error );
if (id == 1)
bdb->bi_troot = node;
return node;
}
/* This function initializes the trees at startup time. */
int bdb_build_tree(
Backend *be
)
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
int rc;
DBC *cursor;
DBT key, data;
ID id;
idNode *node;
bdb->bi_tree = NULL;
rc = bdb->bi_id2parent->bdi_db->cursor(
bdb->bi_id2parent->bdi_db, NULL, &cursor,
bdb->bi_db_opflags );
if( rc != 0 ) {
return NOID;
}
DBTzero( &key );
DBTzero( &data );
key.data = (char *)&id;
key.ulen = sizeof( id );
key.flags = DB_DBT_USERMEM;
data.flags = DB_DBT_MALLOC;
while (cursor->c_get( cursor, &key, &data, DB_NEXT ) == 0) {
bdb_add_node( id, data.data, bdb );
}
cursor->c_close( cursor );
rc = avl_apply(bdb->bi_tree, (AVL_APPLY)bdb_insert_kid, bdb->bi_tree,
-1, AVL_INORDER );
return rc;
}
/* This function constructs a full DN for a given id. We really should
* be passing idNodes directly, to save some effort...
*/
int bdb_fix_dn(
BackendDB *be,
ID id,
Entry *e
)
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
idNode *n, *o;
int rlen, nrlen;
char *ptr, *nptr;
ldap_pvt_thread_rdwr_rlock(&bdb->bi_tree_rdwr);
o = bdb_find_id_node(id, bdb->bi_tree);
rlen = be->be_suffix[0].bv_len + 1;
nrlen = be->be_nsuffix[0].bv_len + 1;
for (n = o; n && n->i_parent; n=n->i_parent) {
rlen += n->i_rdn->rdn.bv_len + 1;
nrlen += n->i_rdn->nrdn.bv_len + 1;
}
e->e_name.bv_len = rlen - 1;
e->e_nname.bv_len = nrlen - 1;
e->e_name.bv_val = ch_malloc(rlen + nrlen);
e->e_nname.bv_val = e->e_name.bv_val + rlen;
ptr = e->e_name.bv_val;
nptr = e->e_nname.bv_val;
for (n = o; n && n->i_parent; n=n->i_parent) {
ptr = lutil_strcopy(ptr, n->i_rdn->rdn.bv_val);
*ptr++ = ',';
nptr = lutil_strcopy(nptr, n->i_rdn->nrdn.bv_val);
*nptr++ = ',';
}
ldap_pvt_thread_rdwr_runlock(&bdb->bi_tree_rdwr);
strcpy(ptr, be->be_suffix[0].bv_val);
strcpy(nptr, be->be_nsuffix[0].bv_val);
return 0;
}
int
bdb_dn2id_add(
BackendDB *be,
DB_TXN *txn,
struct berval *pdn,
Entry *e )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
int rc, rlen, nrlen;
DBT key, data;
DB *db = bdb->bi_id2parent->bdi_db;
diskNode *d;
idNode *n;
nrlen = dn_rdnlen( be, &e->e_nname );
if (nrlen) {
rlen = dn_rdnlen( be, &e->e_name );
} else {
rlen = 0;
}
d = ch_malloc(sizeof(diskNode) + rlen + nrlen + 2);
d->rdn.bv_len = rlen;
d->nrdn.bv_len = nrlen;
d->rdn.bv_val = (char *)(d+1);
d->nrdn.bv_val = d->rdn.bv_val + rlen + 1;
strncpy(d->rdn.bv_val, e->e_dn, rlen);
d->rdn.bv_val[rlen] = '\0';
strncpy(d->nrdn.bv_val, e->e_ndn, nrlen);
d->nrdn.bv_val[nrlen] = '\0';
d->rdn.bv_val -= (long)d;
d->nrdn.bv_val -= (long)d;
if (pdn->bv_len) {
bdb_dn2id(be, txn, pdn, &d->parent, 0);
} else {
d->parent = 0;
}
DBTzero(&key);
DBTzero(&data);
key.data = &e->e_id;
key.size = sizeof(ID);
key.flags = DB_DBT_USERMEM;
data.data = d;
data.size = sizeof(diskNode) + rlen + nrlen + 2;
data.flags = DB_DBT_USERMEM;
rc = db->put( db, txn, &key, &data, DB_NOOVERWRITE );
if (rc == 0) {
ldap_pvt_thread_rdwr_wlock(&bdb->bi_tree_rdwr);
n = bdb_add_node( e->e_id, data.data, bdb);
ldap_pvt_thread_rdwr_wunlock(&bdb->bi_tree_rdwr);
if (d->parent) {
ldap_pvt_thread_rdwr_rlock(&bdb->bi_tree_rdwr);
bdb_insert_kid(n, bdb->bi_tree);
ldap_pvt_thread_rdwr_runlock(&bdb->bi_tree_rdwr);
}
} else {
free(d);
}
return rc;
}
int
bdb_dn2id_delete(
BackendDB *be,
DB_TXN *txn,
char *pdn,
Entry *e )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
int rc;
DBT key;
DB *db = bdb->bi_id2parent->bdi_db;
idNode *n;
DBTzero(&key);
key.size = sizeof(e->e_id);
key.data = &e->e_id;
rc = db->del( db, txn, &key, 0);
ldap_pvt_thread_rdwr_wlock(&bdb->bi_tree_rdwr);
n = avl_delete(&bdb->bi_tree, (void *)e->e_id, (AVL_CMP)node_find_cmp);
if (n) {
if (n->i_parent) {
ldap_pvt_thread_rdwr_wlock(&n->i_parent->i_kids_rdwr);
avl_delete(&n->i_parent->i_kids, &n->i_rdn->nrdn,
(AVL_CMP)node_frdn_cmp);
ldap_pvt_thread_rdwr_wunlock(&n->i_parent->i_kids_rdwr);
}
free(n->i_rdn);
ldap_pvt_thread_rdwr_destroy(&n->i_kids_rdwr);
free(n);
}
if (e->e_id == 1)
bdb->bi_troot = NULL;
ldap_pvt_thread_rdwr_wunlock(&bdb->bi_tree_rdwr);
return rc;
}
int
bdb_dn2id_matched(
BackendDB *be,
DB_TXN *txn,
struct berval *in,
ID *id,
ID *id2,
int flags )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
struct berval rdn;
char *p1, *p2;
idNode *n, *p;
if (!bdb->bi_troot)
return DB_NOTFOUND;
p = bdb->bi_troot;
if (be_issuffix(be, in)) {
*id = p->i_id;
return 0;
}
p1 = in->bv_val + in->bv_len - be->be_nsuffix[0].bv_len - 1;
n = p;
ldap_pvt_thread_rdwr_rlock(&bdb->bi_tree_rdwr);
for (;;) {
for (p2 = p1-1; (p2 >= in->bv_val) && !DN_SEPARATOR(*p2); p2--);
rdn.bv_val = p2+1;
rdn.bv_len = p1-rdn.bv_val;
p1 = p2;
ldap_pvt_thread_rdwr_rlock(&p->i_kids_rdwr);
n = bdb_find_rdn_node(&rdn, p->i_kids);
ldap_pvt_thread_rdwr_runlock(&p->i_kids_rdwr);
if (!n || p2 < in->bv_val) break;
p = n;
}
ldap_pvt_thread_rdwr_runlock(&bdb->bi_tree_rdwr);
if (n) {
*id = n->i_id;
} else if (id2) {
*id2 = p->i_id;
}
return n ? 0 : DB_NOTFOUND;
}
int
bdb_dn2id(
BackendDB *be,
DB_TXN *txn,
struct berval *dn,
ID *id,
int flags )
{
return bdb_dn2id_matched(be, txn, dn, id, NULL, flags);
}
int
bdb_dn2id_children(
BackendDB *be,
DB_TXN *txn,
struct berval *dn,
int flags )
{
int rc;
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
ID id;
idNode *n;
rc = bdb_dn2id(be, txn, dn, &id, flags);
if (rc != 0)
return rc;
ldap_pvt_thread_rdwr_rlock(&bdb->bi_tree_rdwr);
n = bdb_find_id_node(id, bdb->bi_tree);
ldap_pvt_thread_rdwr_runlock(&bdb->bi_tree_rdwr);
if (!n->i_kids)
return DB_NOTFOUND;
else
return 0;
}
/* Since we don't store IDLs for onelevel or subtree, we have to construct
* them on the fly... Perhaps the i_kids tree ought to just be an IDL?
*/
static int
insert_one(
idNode *n,
ID *ids
)
{
return bdb_idl_insert(ids, n->i_id);
}
static int
insert_sub(
idNode *n,
ID *ids
)
{
int rc;
rc = bdb_idl_insert(ids, n->i_id);
if (rc == 0) {
ldap_pvt_thread_rdwr_rlock(&n->i_kids_rdwr);
rc = avl_apply(n->i_kids, (AVL_APPLY)insert_sub, ids, -1,
AVL_INORDER);
ldap_pvt_thread_rdwr_runlock(&n->i_kids_rdwr);
}
return rc;
}
int
bdb_dn2idl(
BackendDB *be,
struct berval *dn,
int prefix,
ID *ids )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
int rc;
ID id;
idNode *n;
if (prefix == DN_SUBTREE_PREFIX && be_issuffix(be, dn)) {
BDB_IDL_ALL(bdb, ids);
return 0;
}
rc = bdb_dn2id(be, NULL, dn, &id, 0);
if (rc) return rc;
ldap_pvt_thread_rdwr_rlock(&bdb->bi_tree_rdwr);
n = bdb_find_id_node(id, bdb->bi_tree);
ldap_pvt_thread_rdwr_runlock(&bdb->bi_tree_rdwr);
ids[0] = 0;
ldap_pvt_thread_rdwr_rlock(&n->i_kids_rdwr);
if (prefix == DN_ONE_PREFIX) {
rc = avl_apply(n->i_kids, (AVL_APPLY)insert_one, ids, -1,
AVL_INORDER);
} else {
rc = avl_apply(n->i_kids, (AVL_APPLY)insert_sub, ids, -1,
AVL_INORDER);
}
ldap_pvt_thread_rdwr_runlock(&n->i_kids_rdwr);
return rc;
}
#endif /* BDB_HIER */
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