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openldap  2.4.31
Functions | Variables
init.c File Reference
#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"

Go to the source code of this file.

Functions

static int mdb_id_compare (const MDB_val *a, const MDB_val *b)
static int mdb_db_init (BackendDB *be, ConfigReply *cr)
static int mdb_db_close (BackendDB *be, ConfigReply *cr)
static int mdb_db_open (BackendDB *be, ConfigReply *cr)
static int mdb_db_destroy (BackendDB *be, ConfigReply *cr)
int mdb_back_initialize (BackendInfo *bi)

Variables

static struct berval []

Function Documentation

Definition at line 337 of file init.c.

{
       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;
}

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static int mdb_db_close ( BackendDB be,
ConfigReply *  cr 
) [static]

Definition at line 264 of file init.c.

{
       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_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;
}

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static int mdb_db_destroy ( BackendDB be,
ConfigReply *  cr 
) [static]

Definition at line 308 of file init.c.

{
       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;
}

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static int mdb_db_init ( BackendDB be,
ConfigReply *  cr 
) [static]

Definition at line 44 of file init.c.

{
       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;

       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;
}

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static int mdb_db_open ( BackendDB be,
ConfigReply *  cr 
) [static]

Definition at line 82 of file init.c.

{
       int rc, i;
       struct mdb_info *mdb = (struct mdb_info *) be->be_private;
       struct stat stat1;
       uint32_t 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;

       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, err %d. "
                     "Restore from backup!\n",
                     be->be_suffix[0].bv_val, rc, 0 );
              goto fail;
       }

       rc = mdb_txn_begin( mdb->mi_dbenv, NULL, 0, &txn );
       if ( rc ) {
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(mdb_db_open) ": database \"%s\" cannot be opened, err %d. "
                     "Restore from backup!\n",
                     be->be_suffix[0].bv_val, rc, 0 );
              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_open( txn,
                     mdmi_databases[i].bv_val,
                     flags,
                     &mdb->mi_dbis[i] );

              if ( rc != 0 ) {
                     snprintf( cr->msg, sizeof(cr->msg), "database \"%s\": "
                            "mdb_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_set_dupsort( txn, mdb->mi_dbis[i], mdb_dup_compare );

       }

       rc = mdb_ad_read( mdb, txn );
       if ( rc ) {
              mdb_txn_abort( txn );
              goto fail;
       }

       rc = mdb_attr_dbs_open( be, txn, cr );
       if ( rc ) {
              mdb_txn_abort( txn );
              goto fail;
       }

       rc = mdb_txn_commit(txn);
       if ( rc != 0 ) {
              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;
}

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static int mdb_id_compare ( const MDB_val a,
const MDB_val b 
) [static]

Definition at line 38 of file init.c.

{
       return *(ID *)a->mv_data < *(ID *)b->mv_data ? -1 : *(ID *)a->mv_data > *(ID *)b->mv_data;
}

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Variable Documentation

struct berval[] [static]
Initial value:
 {
       BER_BVC("ad2i"),
       BER_BVC("dn2i"),
       BER_BVC("id2e"),
       BER_BVNULL
}

Definition at line 30 of file init.c.