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-rw-r--r--servers/slapd/back-mdb/init.c497
1 files changed, 497 insertions, 0 deletions
diff --git a/servers/slapd/back-mdb/init.c b/servers/slapd/back-mdb/init.c
new file mode 100644
index 0000000..44f6f89
--- /dev/null
+++ b/servers/slapd/back-mdb/init.c
@@ -0,0 +1,497 @@
+/* init.c - initialize mdb backend */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2021 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/unistd.h>
+#include <ac/stdlib.h>
+#include <ac/errno.h>
+#include <sys/stat.h>
+#include "back-mdb.h"
+#include <lutil.h>
+#include <ldap_rq.h>
+#include "config.h"
+
+static const struct berval mdmi_databases[] = {
+ BER_BVC("ad2i"),
+ BER_BVC("dn2i"),
+ BER_BVC("id2e"),
+ BER_BVNULL
+};
+
+static int
+mdb_id_compare( const MDB_val *a, const MDB_val *b )
+{
+ return *(ID *)a->mv_data < *(ID *)b->mv_data ? -1 : *(ID *)a->mv_data > *(ID *)b->mv_data;
+}
+
+static int
+mdb_db_init( BackendDB *be, ConfigReply *cr )
+{
+ struct mdb_info *mdb;
+ int rc;
+
+ Debug( LDAP_DEBUG_TRACE,
+ LDAP_XSTRING(mdb_db_init) ": Initializing mdb database\n",
+ 0, 0, 0 );
+
+ /* allocate backend-database-specific stuff */
+ mdb = (struct mdb_info *) ch_calloc( 1, sizeof(struct mdb_info) );
+
+ /* DBEnv parameters */
+ mdb->mi_dbenv_home = ch_strdup( SLAPD_DEFAULT_DB_DIR );
+ mdb->mi_dbenv_flags = 0;
+ mdb->mi_dbenv_mode = SLAPD_DEFAULT_DB_MODE;
+
+ mdb->mi_search_stack_depth = DEFAULT_SEARCH_STACK_DEPTH;
+ mdb->mi_search_stack = NULL;
+
+ mdb->mi_mapsize = DEFAULT_MAPSIZE;
+ mdb->mi_rtxn_size = DEFAULT_RTXN_SIZE;
+
+ be->be_private = mdb;
+ be->be_cf_ocs = be->bd_info->bi_cf_ocs;
+
+#ifndef MDB_MULTIPLE_SUFFIXES
+ SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_ONE_SUFFIX;
+#endif
+
+ rc = mdb_monitor_db_init( be );
+
+ return rc;
+}
+
+static int
+mdb_db_close( BackendDB *be, ConfigReply *cr );
+
+static int
+mdb_db_open( BackendDB *be, ConfigReply *cr )
+{
+ int rc, i;
+ struct mdb_info *mdb = (struct mdb_info *) be->be_private;
+ struct stat stat1;
+ unsigned flags;
+ char *dbhome;
+ MDB_txn *txn;
+
+ if ( be->be_suffix == NULL ) {
+ Debug( LDAP_DEBUG_ANY,
+ LDAP_XSTRING(mdb_db_open) ": need suffix.\n",
+ 1, 0, 0 );
+ return -1;
+ }
+
+ Debug( LDAP_DEBUG_ARGS,
+ LDAP_XSTRING(mdb_db_open) ": \"%s\"\n",
+ be->be_suffix[0].bv_val, 0, 0 );
+
+ /* Check existence of dbenv_home. Any error means trouble */
+ rc = stat( mdb->mi_dbenv_home, &stat1 );
+ if( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
+ "cannot access database directory \"%s\" (%d).\n",
+ be->be_suffix[0].bv_val, mdb->mi_dbenv_home, errno );
+ return -1;
+ }
+
+ /* mdb is always clean */
+ be->be_flags |= SLAP_DBFLAG_CLEAN;
+
+ rc = mdb_env_create( &mdb->mi_dbenv );
+ if( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
+ "mdb_env_create failed: %s (%d).\n",
+ be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
+ goto fail;
+ }
+
+ if ( mdb->mi_readers ) {
+ rc = mdb_env_set_maxreaders( mdb->mi_dbenv, mdb->mi_readers );
+ if( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
+ "mdb_env_set_maxreaders failed: %s (%d).\n",
+ be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
+ goto fail;
+ }
+ }
+
+ rc = mdb_env_set_mapsize( mdb->mi_dbenv, mdb->mi_mapsize );
+ if( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
+ "mdb_env_set_mapsize failed: %s (%d).\n",
+ be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
+ goto fail;
+ }
+
+ rc = mdb_env_set_maxdbs( mdb->mi_dbenv, MDB_INDICES );
+ if( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
+ "mdb_env_set_maxdbs failed: %s (%d).\n",
+ be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
+ goto fail;
+ }
+
+#ifdef HAVE_EBCDIC
+ strcpy( path, mdb->mi_dbenv_home );
+ __atoe( path );
+ dbhome = path;
+#else
+ dbhome = mdb->mi_dbenv_home;
+#endif
+
+ Debug( LDAP_DEBUG_TRACE,
+ LDAP_XSTRING(mdb_db_open) ": database \"%s\": "
+ "dbenv_open(%s).\n",
+ be->be_suffix[0].bv_val, mdb->mi_dbenv_home, 0);
+
+ flags = mdb->mi_dbenv_flags;
+
+ if ( slapMode & SLAP_TOOL_QUICK )
+ flags |= MDB_NOSYNC|MDB_WRITEMAP;
+
+ if ( slapMode & SLAP_TOOL_READONLY)
+ flags |= MDB_RDONLY;
+
+ rc = mdb_env_open( mdb->mi_dbenv, dbhome,
+ flags, mdb->mi_dbenv_mode );
+
+ if ( rc ) {
+ Debug( LDAP_DEBUG_ANY,
+ LDAP_XSTRING(mdb_db_open) ": database \"%s\" cannot be opened: %s (%d). "
+ "Restore from backup!\n",
+ be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
+ goto fail;
+ }
+
+ rc = mdb_txn_begin( mdb->mi_dbenv, NULL, flags & MDB_RDONLY, &txn );
+ if ( rc ) {
+ Debug( LDAP_DEBUG_ANY,
+ LDAP_XSTRING(mdb_db_open) ": database \"%s\" cannot be opened: %s (%d). "
+ "Restore from backup!\n",
+ be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
+ goto fail;
+ }
+
+ /* open (and create) main databases */
+ for( i = 0; mdmi_databases[i].bv_val; i++ ) {
+ flags = MDB_INTEGERKEY;
+ if( i == MDB_ID2ENTRY ) {
+ if ( !(slapMode & (SLAP_TOOL_READMAIN|SLAP_TOOL_READONLY) ))
+ flags |= MDB_CREATE;
+ } else {
+ if ( i == MDB_DN2ID )
+ flags |= MDB_DUPSORT;
+ if ( !(slapMode & SLAP_TOOL_READONLY) )
+ flags |= MDB_CREATE;
+ }
+
+ rc = mdb_dbi_open( txn,
+ mdmi_databases[i].bv_val,
+ flags,
+ &mdb->mi_dbis[i] );
+
+ if ( rc != 0 ) {
+ snprintf( cr->msg, sizeof(cr->msg), "database \"%s\": "
+ "mdb_dbi_open(%s/%s) failed: %s (%d).",
+ be->be_suffix[0].bv_val,
+ mdb->mi_dbenv_home, mdmi_databases[i].bv_val,
+ mdb_strerror(rc), rc );
+ Debug( LDAP_DEBUG_ANY,
+ LDAP_XSTRING(mdb_db_open) ": %s\n",
+ cr->msg, 0, 0 );
+ goto fail;
+ }
+
+ if ( i == MDB_ID2ENTRY )
+ mdb_set_compare( txn, mdb->mi_dbis[i], mdb_id_compare );
+ else if ( i == MDB_DN2ID ) {
+ MDB_cursor *mc;
+ MDB_val key, data;
+ mdb_set_dupsort( txn, mdb->mi_dbis[i], mdb_dup_compare );
+ /* check for old dn2id format */
+ rc = mdb_cursor_open( txn, mdb->mi_dbis[i], &mc );
+ /* first record is always ID 0 */
+ rc = mdb_cursor_get( mc, &key, &data, MDB_FIRST );
+ if ( rc == 0 ) {
+ rc = mdb_cursor_get( mc, &key, &data, MDB_NEXT );
+ if ( rc == 0 ) {
+ int len;
+ unsigned char *ptr;
+ ptr = data.mv_data;
+ len = (ptr[0] & 0x7f) << 8 | ptr[1];
+ if (data.mv_size < 2*len + 4 + 2*sizeof(ID)) {
+ snprintf( cr->msg, sizeof(cr->msg),
+ "database \"%s\": DN index needs upgrade, "
+ "run \"slapindex entryDN\".",
+ be->be_suffix[0].bv_val );
+ Debug( LDAP_DEBUG_ANY,
+ LDAP_XSTRING(mdb_db_open) ": %s\n",
+ cr->msg, 0, 0 );
+ if ( !(slapMode & SLAP_TOOL_READMAIN ))
+ rc = LDAP_OTHER;
+ mdb->mi_flags |= MDB_NEED_UPGRADE;
+ }
+ }
+ }
+ mdb_cursor_close( mc );
+ if ( rc == LDAP_OTHER )
+ goto fail;
+ }
+ }
+
+ rc = mdb_ad_read( mdb, txn );
+ if ( rc ) {
+ mdb_txn_abort( txn );
+ goto fail;
+ }
+
+ /* slapcat doesn't need indexes. avoid a failure if
+ * a configured index wasn't created yet.
+ */
+ if ( !(slapMode & SLAP_TOOL_READONLY) ) {
+ rc = mdb_attr_dbs_open( be, txn, cr );
+ if ( rc ) {
+ mdb_txn_abort( txn );
+ goto fail;
+ }
+ }
+
+ rc = mdb_txn_commit(txn);
+ if ( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ LDAP_XSTRING(mdb_db_open) ": database %s: "
+ "txn_commit failed: %s (%d)\n",
+ be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
+ goto fail;
+ }
+
+ /* monitor setup */
+ rc = mdb_monitor_db_open( be );
+ if ( rc != 0 ) {
+ goto fail;
+ }
+
+ mdb->mi_flags |= MDB_IS_OPEN;
+
+ return 0;
+
+fail:
+ mdb_db_close( be, NULL );
+ return rc;
+}
+
+static int
+mdb_db_close( BackendDB *be, ConfigReply *cr )
+{
+ int rc;
+ struct mdb_info *mdb = (struct mdb_info *) be->be_private;
+
+ /* monitor handling */
+ (void)mdb_monitor_db_close( be );
+
+ mdb->mi_flags &= ~MDB_IS_OPEN;
+
+ if( mdb->mi_dbenv ) {
+ mdb_reader_flush( mdb->mi_dbenv );
+ }
+
+ if ( mdb->mi_dbenv ) {
+ if ( mdb->mi_dbis[0] ) {
+ int i;
+
+ mdb_attr_dbs_close( mdb );
+ for ( i=0; i<MDB_NDB; i++ )
+ mdb_dbi_close( mdb->mi_dbenv, mdb->mi_dbis[i] );
+
+ /* force a sync, but not if we were ReadOnly,
+ * and not in Quick mode.
+ */
+ if (!(slapMode & (SLAP_TOOL_QUICK|SLAP_TOOL_READONLY))) {
+ rc = mdb_env_sync( mdb->mi_dbenv, 1 );
+ if( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "mdb_db_close: database \"%s\": "
+ "mdb_env_sync failed: %s (%d).\n",
+ be->be_suffix[0].bv_val, mdb_strerror(rc), rc );
+ }
+ }
+ }
+
+ mdb_env_close( mdb->mi_dbenv );
+ mdb->mi_dbenv = NULL;
+ }
+
+ return 0;
+}
+
+static int
+mdb_db_destroy( BackendDB *be, ConfigReply *cr )
+{
+ struct mdb_info *mdb = (struct mdb_info *) be->be_private;
+
+ /* stop and remove checkpoint task */
+ if ( mdb->mi_txn_cp_task ) {
+ struct re_s *re = mdb->mi_txn_cp_task;
+ mdb->mi_txn_cp_task = NULL;
+ ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
+ if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) )
+ ldap_pvt_runqueue_stoptask( &slapd_rq, re );
+ ldap_pvt_runqueue_remove( &slapd_rq, re );
+ ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
+ }
+
+ /* monitor handling */
+ (void)mdb_monitor_db_destroy( be );
+
+ if( mdb->mi_dbenv_home ) ch_free( mdb->mi_dbenv_home );
+
+ mdb_attr_index_destroy( mdb );
+
+ ch_free( mdb );
+ be->be_private = NULL;
+
+ return 0;
+}
+
+int
+mdb_back_initialize(
+ BackendInfo *bi )
+{
+ int rc;
+
+ static char *controls[] = {
+ LDAP_CONTROL_ASSERT,
+ LDAP_CONTROL_MANAGEDSAIT,
+ LDAP_CONTROL_NOOP,
+ LDAP_CONTROL_PAGEDRESULTS,
+ LDAP_CONTROL_PRE_READ,
+ LDAP_CONTROL_POST_READ,
+ LDAP_CONTROL_SUBENTRIES,
+ LDAP_CONTROL_X_PERMISSIVE_MODIFY,
+#ifdef LDAP_X_TXN
+ LDAP_CONTROL_X_TXN_SPEC,
+#endif
+ NULL
+ };
+
+ /* initialize the underlying database system */
+ Debug( LDAP_DEBUG_TRACE,
+ LDAP_XSTRING(mdb_back_initialize) ": initialize "
+ MDB_UCTYPE " backend\n", 0, 0, 0 );
+
+ bi->bi_flags |=
+ SLAP_BFLAG_INCREMENT |
+ SLAP_BFLAG_SUBENTRIES |
+ SLAP_BFLAG_ALIASES |
+ SLAP_BFLAG_REFERRALS;
+
+ bi->bi_controls = controls;
+
+ { /* version check */
+ int major, minor, patch, ver;
+ char *version = mdb_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 MDB library are already
+ * in EBCDIC; we have to go back and forth...
+ */
+ strcpy( v2, version );
+ __etoa( v2 );
+ version = v2;
+#endif
+ ver = (major << 24) | (minor << 16) | patch;
+ if( ver != MDB_VERSION_FULL ) {
+ /* fail if a versions don't match */
+ Debug( LDAP_DEBUG_ANY,
+ LDAP_XSTRING(mdb_back_initialize) ": "
+ "MDB library version mismatch:"
+ " expected " MDB_VERSION_STRING ","
+ " got %s\n", version, 0, 0 );
+ return -1;
+ }
+
+ Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(mdb_back_initialize)
+ ": %s\n", version, 0, 0 );
+ }
+
+ bi->bi_open = 0;
+ bi->bi_close = 0;
+ bi->bi_config = 0;
+ bi->bi_destroy = 0;
+
+ bi->bi_db_init = mdb_db_init;
+ bi->bi_db_config = config_generic_wrapper;
+ bi->bi_db_open = mdb_db_open;
+ bi->bi_db_close = mdb_db_close;
+ bi->bi_db_destroy = mdb_db_destroy;
+
+ bi->bi_op_add = mdb_add;
+ bi->bi_op_bind = mdb_bind;
+ bi->bi_op_compare = mdb_compare;
+ bi->bi_op_delete = mdb_delete;
+ bi->bi_op_modify = mdb_modify;
+ bi->bi_op_modrdn = mdb_modrdn;
+ bi->bi_op_search = mdb_search;
+
+ bi->bi_op_unbind = 0;
+
+ bi->bi_extended = mdb_extended;
+
+ bi->bi_chk_referrals = 0;
+ bi->bi_operational = mdb_operational;
+
+ bi->bi_has_subordinates = mdb_hasSubordinates;
+ bi->bi_entry_release_rw = mdb_entry_release;
+ bi->bi_entry_get_rw = mdb_entry_get;
+
+ /*
+ * hooks for slap tools
+ */
+ bi->bi_tool_entry_open = mdb_tool_entry_open;
+ bi->bi_tool_entry_close = mdb_tool_entry_close;
+ bi->bi_tool_entry_first = backend_tool_entry_first;
+ bi->bi_tool_entry_first_x = mdb_tool_entry_first_x;
+ bi->bi_tool_entry_next = mdb_tool_entry_next;
+ bi->bi_tool_entry_get = mdb_tool_entry_get;
+ bi->bi_tool_entry_put = mdb_tool_entry_put;
+ bi->bi_tool_entry_reindex = mdb_tool_entry_reindex;
+ bi->bi_tool_sync = 0;
+ bi->bi_tool_dn2id_get = mdb_tool_dn2id_get;
+ bi->bi_tool_entry_modify = mdb_tool_entry_modify;
+
+ bi->bi_connection_init = 0;
+ bi->bi_connection_destroy = 0;
+
+ rc = mdb_back_init_cf( bi );
+
+ return rc;
+}
+
+#if (SLAPD_MDB == SLAPD_MOD_DYNAMIC)
+
+SLAP_BACKEND_INIT_MODULE( mdb )
+
+#endif /* SLAPD_MDB == SLAPD_MOD_DYNAMIC */
+