openldap/servers/slapd/back-bdb/init.c
2003-03-12 16:34:17 +00:00

683 lines
15 KiB
C

/* init.c - initialize bdb backend */
/* $OpenLDAP$ */
/*
* Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/unistd.h>
#include <ac/stdlib.h>
#include "back-bdb.h"
#include "external.h"
#include <lutil.h>
static struct bdbi_database {
char *file;
char *name;
int type;
int flags;
} bdbi_databases[] = {
{ "id2entry" BDB_SUFFIX, "id2entry", DB_BTREE, 0 },
#ifdef BDB_HIER
{ "id2parent" BDB_SUFFIX, "id2parent", DB_BTREE, 0 },
#else
{ "dn2id" BDB_SUFFIX, "dn2id", DB_BTREE, 0 },
#endif
{ NULL, NULL, 0, 0 }
};
struct berval bdb_uuid = { 0, NULL };
typedef void * db_malloc(size_t);
typedef void * db_realloc(void *, size_t);
#if 0
static int
bdb_open( BackendInfo *bi )
{
return 0;
}
static int
bdb_destroy( BackendInfo *bi )
{
return 0;
}
static int
bdb_close( BackendInfo *bi )
{
/* terminate the underlying database system */
return 0;
}
#endif
static int
bdb_db_init( BackendDB *be )
{
struct bdb_info *bdb;
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ENTRY, "bdb_db_init", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_init: Initializing BDB database\n",
0, 0, 0 );
#endif
/* indicate system schema supported */
be->be_flags |=
#ifdef BDB_SUBENTRIES
SLAP_BFLAG_SUBENTRIES |
#endif
#ifdef BDB_ALIASES
SLAP_BFLAG_ALIASES |
#endif
SLAP_BFLAG_REFERRALS;
/* allocate backend-database-specific stuff */
bdb = (struct bdb_info *) ch_calloc( 1, sizeof(struct bdb_info) );
/* DBEnv parameters */
bdb->bi_dbenv_home = ch_strdup( SLAPD_DEFAULT_DB_DIR );
bdb->bi_dbenv_xflags = 0;
bdb->bi_dbenv_mode = SLAPD_DEFAULT_DB_MODE;
bdb->bi_cache.c_maxsize = DEFAULT_CACHE_SIZE;
bdb->bi_lock_detect = DB_LOCK_DEFAULT;
bdb->bi_search_stack_depth = DEFAULT_SEARCH_STACK_DEPTH;
bdb->bi_search_stack = NULL;
#if defined(LDAP_CLIENT_UPDATE) || defined(LDAP_SYNC)
LDAP_LIST_INIT (&bdb->psearch_list);
#endif
ldap_pvt_thread_mutex_init( &bdb->bi_database_mutex );
ldap_pvt_thread_mutex_init( &bdb->bi_lastid_mutex );
ldap_pvt_thread_mutex_init( &bdb->bi_cache.lru_mutex );
ldap_pvt_thread_rdwr_init ( &bdb->bi_cache.c_rwlock );
#ifdef BDB_HIER
ldap_pvt_thread_rdwr_init( &bdb->bi_tree_rdwr );
#endif
be->be_private = bdb;
return 0;
}
int
bdb_bt_compare(
DB *db,
const DBT *usrkey,
const DBT *curkey
)
{
unsigned char *u, *c;
int i, x;
u = usrkey->data;
c = curkey->data;
#ifdef WORDS_BIGENDIAN
for( i = 0; i < (int)sizeof(ID); i++)
#else
for( i = sizeof(ID)-1; i >= 0; i--)
#endif
{
x = u[i] - c[i];
if( x ) return x;
}
return 0;
}
static int
bdb_db_open( BackendDB *be )
{
int rc, i;
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
u_int32_t flags;
#ifdef HAVE_EBCDIC
char path[MAXPATHLEN];
#endif
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ARGS,
"bdb_db_open: %s\n", be->be_suffix[0].bv_val, 0, 0 );
#else
Debug( LDAP_DEBUG_ARGS,
"bdb_db_open: %s\n",
be->be_suffix[0].bv_val, 0, 0 );
#endif
#ifndef BDB_MULTIPLE_SUFFIXES
if ( be->be_suffix[1].bv_val ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_open: only one suffix allowed\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_open: only one suffix allowed\n", 0, 0, 0 );
#endif
return -1;
}
#endif
/* we should check existance of dbenv_home and db_directory */
rc = db_env_create( &bdb->bi_dbenv, 0 );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_open: db_env_create failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_open: db_env_create failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
return rc;
}
flags = DB_INIT_MPOOL | DB_THREAD | DB_CREATE
| DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN;
#if 0
/* Never do automatic recovery, must perform it manually.
* Otherwise restarting with gentlehup will corrupt the
* database.
*/
if( !(slapMode & SLAP_TOOL_MODE) ) flags |= DB_RECOVER;
#endif
bdb->bi_dbenv->set_errpfx( bdb->bi_dbenv, be->be_suffix[0].bv_val );
bdb->bi_dbenv->set_errcall( bdb->bi_dbenv, bdb_errcall );
bdb->bi_dbenv->set_lk_detect( bdb->bi_dbenv, bdb->bi_lock_detect );
#ifdef SLAP_IDL_CACHE
if ( bdb->bi_idl_cache_max_size ) {
ldap_pvt_thread_mutex_init( &bdb->bi_idl_tree_mutex );
bdb->bi_idl_cache_size = 0;
}
#endif
#ifdef BDB_SUBDIRS
{
char dir[MAXPATHLEN];
size_t len = strlen( bdb->bi_dbenv_home );
strcpy( dir, bdb->bi_dbenv_home );
strcat( &dir[len], BDB_TMP_SUBDIR );
rc = bdb->bi_dbenv->set_tmp_dir( bdb->bi_dbenv, dir );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_open: set_tmp_dir(%s) failed: %s (%d)\n",
dir, db_strerror(rc), rc );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_open: set_tmp_dir(%s) failed: %s (%d)\n",
dir, db_strerror(rc), rc );
#endif
return rc;
}
strcat( &dir[len], BDB_LG_SUBDIR );
rc = bdb->bi_dbenv->set_lg_dir( bdb->bi_dbenv, dir );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_open: set_lg_dir(%s) failed: %s (%d)\n",
dir, db_strerror(rc), rc );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_open: set_lg_dir(%s) failed: %s (%d)\n",
dir, db_strerror(rc), rc );
#endif
return rc;
}
strcat( &dir[len], BDB_DATA_SUBDIR );
rc = bdb->bi_dbenv->set_data_dir( bdb->bi_dbenv, dir );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_open: set_data_dir(%s) failed: %s (%d)\n",
dir, db_strerror(rc), rc );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_open: set_data_dir(%s) failed: %s (%d)\n",
dir, db_strerror(rc), rc );
#endif
return rc;
}
}
#endif
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, DETAIL1,
"bdb_db_open: dbenv_open %s\n", bdb->bi_dbenv_home, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"bdb_db_open: dbenv_open(%s)\n",
bdb->bi_dbenv_home, 0, 0);
#endif
#ifdef HAVE_EBCDIC
strcpy( path, bdb->bi_dbenv_home );
__atoe( path );
rc = bdb->bi_dbenv->open( bdb->bi_dbenv,
path,
flags,
bdb->bi_dbenv_mode );
#else
rc = bdb->bi_dbenv->open( bdb->bi_dbenv,
bdb->bi_dbenv_home,
flags,
bdb->bi_dbenv_mode );
#endif
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_open: dbenv_open failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_open: dbenv_open failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
return rc;
}
if( bdb->bi_dbenv_xflags != 0 ) {
rc = bdb->bi_dbenv->set_flags( bdb->bi_dbenv,
bdb->bi_dbenv_xflags, 1);
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_open: dbenv_set_flags failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_open: dbenv_set_flags failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
return rc;
}
}
flags = DB_THREAD | DB_CREATE | bdb->bi_db_opflags;
bdb->bi_databases = (struct bdb_db_info **) ch_malloc(
BDB_INDICES * sizeof(struct bdb_db_info *) );
/* open (and create) main database */
for( i = 0; bdbi_databases[i].name; i++ ) {
struct bdb_db_info *db;
db = (struct bdb_db_info *) ch_calloc(1, sizeof(struct bdb_db_info));
rc = db_create( &db->bdi_db, bdb->bi_dbenv, 0 );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_open: db_create(%s) failed: %s (%d)\n",
bdb->bi_dbenv_home, db_strerror(rc), rc );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_open: db_create(%s) failed: %s (%d)\n",
bdb->bi_dbenv_home, db_strerror(rc), rc );
#endif
return rc;
}
if( i == BDB_ID2ENTRY ) {
rc = db->bdi_db->set_bt_compare( db->bdi_db,
bdb_bt_compare );
rc = db->bdi_db->set_pagesize( db->bdi_db,
BDB_ID2ENTRY_PAGESIZE );
} else {
#ifdef BDB_HIER
rc = db->bdi_db->set_bt_compare( db->bdi_db,
bdb_bt_compare );
#else
rc = db->bdi_db->set_flags( db->bdi_db,
DB_DUP | DB_DUPSORT );
rc = db->bdi_db->set_dup_compare( db->bdi_db,
bdb_bt_compare );
#endif
rc = db->bdi_db->set_pagesize( db->bdi_db,
BDB_PAGESIZE );
}
#ifdef HAVE_EBCDIC
strcpy( path, bdbi_databases[i].file );
__atoe( path );
rc = DB_OPEN( db->bdi_db,
path,
/* bdbi_databases[i].name, */ NULL,
bdbi_databases[i].type,
bdbi_databases[i].flags | flags,
bdb->bi_dbenv_mode );
#else
rc = DB_OPEN( db->bdi_db,
bdbi_databases[i].file,
/* bdbi_databases[i].name, */ NULL,
bdbi_databases[i].type,
bdbi_databases[i].flags | flags,
bdb->bi_dbenv_mode );
#endif
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_open: db_create(%s) failed: %s (%d)\n",
bdb->bi_dbenv_home, db_strerror(rc), rc );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_open: db_open(%s) failed: %s (%d)\n",
bdb->bi_dbenv_home, db_strerror(rc), rc );
#endif
return rc;
}
db->bdi_name = bdbi_databases[i].name;
bdb->bi_databases[i] = db;
}
bdb->bi_databases[i] = NULL;
bdb->bi_ndatabases = i;
/* get nextid */
rc = bdb_last_id( be, NULL );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_open: last_id(%s) failed: %s (%d)\n",
bdb->bi_dbenv_home, db_strerror(rc), rc );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_open: last_id(%s) failed: %s (%d)\n",
bdb->bi_dbenv_home, db_strerror(rc), rc );
#endif
return rc;
}
/* <insert> open (and create) index databases */
#ifdef BDB_HIER
rc = bdb_build_tree( be );
#endif
return 0;
}
static int
bdb_db_close( BackendDB *be )
{
int rc;
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
struct bdb_db_info *db;
#ifdef SLAP_IDL_CACHE
bdb_idl_cache_entry_t *entry, *next_entry;
#endif
while( bdb->bi_ndatabases-- ) {
db = bdb->bi_databases[bdb->bi_ndatabases];
rc = db->bdi_db->close( db->bdi_db, 0 );
/* Lower numbered names are not strdup'd */
if( bdb->bi_ndatabases >= BDB_NDB )
free( db->bdi_name );
free( db );
}
free( bdb->bi_databases );
bdb_attr_index_destroy( bdb->bi_attrs );
bdb_cache_release_all (&bdb->bi_cache);
#ifdef SLAP_IDL_CACHE
ldap_pvt_thread_mutex_lock ( &bdb->bi_idl_tree_mutex );
entry = bdb->bi_idl_lru_head;
while ( entry != NULL ) {
next_entry = entry->idl_lru_next;
avl_delete( &bdb->bi_idl_tree, (caddr_t) entry, bdb_idl_entry_cmp );
free( entry->idl );
free( entry->kstr.bv_val );
free( entry );
entry = next_entry;
}
ldap_pvt_thread_mutex_unlock ( &bdb->bi_idl_tree_mutex );
#endif
return 0;
}
static int
bdb_db_destroy( BackendDB *be )
{
int rc;
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
/* close db environment */
if( bdb->bi_dbenv ) {
/* force a checkpoint */
rc = TXN_CHECKPOINT( bdb->bi_dbenv, 0, 0, DB_FORCE );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_destroy: txn_checkpoint failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_destroy: txn_checkpoint failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
}
bdb_cache_release_all (&bdb->bi_cache);
rc = bdb->bi_dbenv->close( bdb->bi_dbenv, 0 );
bdb->bi_dbenv = NULL;
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_destroy: close failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_db_destroy: close failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
return rc;
}
}
if( bdb->bi_dbenv_home ) ch_free( bdb->bi_dbenv_home );
#ifdef BDB_HIER
ldap_pvt_thread_rdwr_destroy( &bdb->bi_tree_rdwr );
#endif
ldap_pvt_thread_rdwr_destroy ( &bdb->bi_cache.c_rwlock );
ldap_pvt_thread_mutex_destroy( &bdb->bi_cache.lru_mutex );
ldap_pvt_thread_mutex_destroy( &bdb->bi_lastid_mutex );
ldap_pvt_thread_mutex_destroy( &bdb->bi_database_mutex );
ch_free( bdb );
be->be_private = NULL;
return 0;
}
#ifdef SLAPD_BDB_DYNAMIC
int back_bdb_LTX_init_module( int argc, char *argv[] ) {
BackendInfo bi;
memset( &bi, '\0', sizeof(bi) );
bi.bi_type = "bdb";
bi.bi_init = bdb_initialize;
backend_add( &bi );
return 0;
}
#endif /* SLAPD_BDB_DYNAMIC */
int
bdb_initialize(
BackendInfo *bi
)
{
static char *controls[] = {
LDAP_CONTROL_MANAGEDSAIT,
LDAP_CONTROL_NOOP,
#ifdef LDAP_CONTROL_PAGEDRESULTS
LDAP_CONTROL_PAGEDRESULTS,
#endif
LDAP_CONTROL_VALUESRETURNFILTER,
#ifdef LDAP_CONTROL_SUBENTRIES
LDAP_CONTROL_SUBENTRIES,
#endif
#ifdef LDAP_CLIENT_UPDATE
LDAP_CONTROL_CLIENT_UPDATE,
#endif
NULL
};
bi->bi_controls = controls;
/* initialize the underlying database system */
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ENTRY, "bdb_db_initialize\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "bdb_initialize: initialize BDB backend\n",
0, 0, 0 );
#endif
{ /* version check */
int major, minor, patch;
char *version = db_version( &major, &minor, &patch );
#ifdef HAVE_EBCDIC
char v2[1024];
/* All our stdio does an ASCII to EBCDIC conversion on
* the output. Strings from the BDB library are already
* in EBCDIC; we have to go back and forth...
*/
strcpy( v2, version );
__etoa( v2 );
version = v2;
#endif
if( major != DB_VERSION_MAJOR ||
minor != DB_VERSION_MINOR ||
patch < DB_VERSION_PATCH )
{
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, ERR,
"bdb_db_initialize: version mismatch: "
"\texpected: %s \tgot: %s\n", DB_VERSION_STRING, version, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"bdb_initialize: version mismatch\n"
"\texpected: " DB_VERSION_STRING "\n"
"\tgot: %s \n", version, 0, 0 );
#endif
}
#ifdef NEW_LOGGING
LDAP_LOG( BACK_BDB, DETAIL1,
"bdb_db_initialize: %s\n", version, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "bdb_initialize: %s\n",
version, 0, 0 );
#endif
}
db_env_set_func_free( ber_memfree );
db_env_set_func_malloc( (db_malloc *)ber_memalloc );
db_env_set_func_realloc( (db_realloc *)ber_memrealloc );
#ifndef NO_THREAD
/* This is a no-op on a NO_THREAD build. Leave the default
* alone so that BDB will sleep on interprocess conflicts.
*/
db_env_set_func_yield( ldap_pvt_thread_yield );
#endif
{
static char uuidbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE ];
bdb_uuid.bv_len = lutil_uuidstr( uuidbuf, sizeof( uuidbuf ));
bdb_uuid.bv_val = uuidbuf;
}
bi->bi_open = 0;
bi->bi_close = 0;
bi->bi_config = 0;
bi->bi_destroy = 0;
bi->bi_db_init = bdb_db_init;
bi->bi_db_config = bdb_db_config;
bi->bi_db_open = bdb_db_open;
bi->bi_db_close = bdb_db_close;
bi->bi_db_destroy = bdb_db_destroy;
bi->bi_op_add = bdb_add;
bi->bi_op_bind = bdb_bind;
bi->bi_op_compare = bdb_compare;
bi->bi_op_delete = bdb_delete;
bi->bi_op_modify = bdb_modify;
bi->bi_op_modrdn = bdb_modrdn;
bi->bi_op_search = bdb_search;
bi->bi_op_unbind = 0;
#ifdef LDAP_CLIENT_UPDATE
bi->bi_op_abandon = bdb_abandon;
bi->bi_op_cancel = bdb_cancel;
#else
bi->bi_op_abandon = 0;
bi->bi_op_cancel = 0;
#endif
bi->bi_extended = bdb_extended;
#if 1
/*
* these routines (and their callers) are not yet designed
* to work with transaction. Using them may cause deadlock.
*/
bi->bi_acl_group = bdb_group;
bi->bi_acl_attribute = bdb_attribute;
#else
bi->bi_acl_group = 0;
bi->bi_acl_attribute = 0;
#endif
bi->bi_chk_referrals = bdb_referrals;
bi->bi_operational = bdb_operational;
bi->bi_has_subordinates = bdb_hasSubordinates;
bi->bi_entry_release_rw = bdb_entry_release;
/*
* hooks for slap tools
*/
bi->bi_tool_entry_open = bdb_tool_entry_open;
bi->bi_tool_entry_close = bdb_tool_entry_close;
bi->bi_tool_entry_first = bdb_tool_entry_next;
bi->bi_tool_entry_next = bdb_tool_entry_next;
bi->bi_tool_entry_get = bdb_tool_entry_get;
bi->bi_tool_entry_put = bdb_tool_entry_put;
bi->bi_tool_entry_reindex = bdb_tool_entry_reindex;
bi->bi_tool_sync = 0;
bi->bi_connection_init = 0;
bi->bi_connection_destroy = 0;
return 0;
}