git.sur5r.net Git - openldap/blob - servers/slapd/back-bdb/operational.c

   1 /* operational.c - bdb backend operational attributes function */
   2 /*
   3  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6
   7 #include "portable.h"
   8
   9 #include <stdio.h>
  10
  11 #include <ac/string.h>
  12 #include <ac/socket.h>
  13
  14 #include "slap.h"
  15 #include "back-bdb.h"
  16 #include "proto-bdb.h"
  17
  18 /*
  19  * sets the supported operational attributes (if required)
  20  */
  21
  22 int
  23 bdb_operational(
  24         BackendDB       *be,
  25         Connection      *conn,
  26         Operation       *op,
  27         Entry           *e,
  28         AttributeName           *attrs,
  29         int             opattrs,
  30         Attribute       **a )
  31 {
  32         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
  33         Attribute       **aa = a;
  34         int             rc;
  35         DB_TXN          *ltid = NULL;
  36         struct bdb_op_info opinfo;
  37
  38         assert( e );
  39
  40         if ( !opattrs && !ad_inlist( slap_schema.si_ad_hasSubordinates, attrs ) ) {
  41                 return 0;
  42         }
  43
  44
  45         if( 0 ) {
  46 retry:  /* transaction retry */
  47                 if( e != NULL ) {
  48                         bdb_cache_return_entry_w(&bdb->bi_cache, e);
  49                 }
  50                 Debug( LDAP_DEBUG_TRACE, "==> bdb_delete: retrying...\n",
  51                                 0, 0, 0 );
  52                 rc = TXN_ABORT( ltid );
  53                 ltid = NULL;
  54                 op->o_private = NULL;
  55                 if( rc != 0 ) {
  56                         rc = LDAP_OTHER;
  57                         goto return_results;
  58                 }
  59                 ldap_pvt_thread_yield();
  60         }
  61
  62         /* begin transaction */
  63         rc = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid, bdb->bi_db_opflags );
  64         if ( rc != 0 ) {
  65                 Debug( LDAP_DEBUG_TRACE,
  66                         "bdb_operational: txn_begin failed: %s (%d)\n",
  67                         db_strerror( rc ), rc, 0 );
  68                 rc = LDAP_OTHER;
  69                 return rc;
  70         }
  71
  72         opinfo.boi_bdb = be;
  73         opinfo.boi_txn = ltid;
  74         opinfo.boi_err = 0;
  75         op->o_private = &opinfo;
  76
  77         rc = bdb_dn2id_children( be, ltid, &e->e_nname );
  78
  79         switch( rc ) {
  80         case DB_LOCK_DEADLOCK:
  81         case DB_LOCK_NOTGRANTED:
  82                 goto retry;
  83
  84         case 0:
  85         case DB_NOTFOUND:
  86                 *aa = slap_operational_hasSubordinate( rc == 0 );
  87                 if ( *aa != NULL ) {
  88                         aa = &(*aa)->a_next;
  89                 }
  90                 break;
  91
  92         default:
  93                 Debug(LDAP_DEBUG_ARGS,
  94                         "<=- bdb_operational: has_children failed: %s (%d)\n",
  95                         db_strerror(rc), rc, 0 );
  96                 rc = LDAP_OTHER;
  97         }
  98
  99 return_results:
 100         if ( rc == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 101                 ldap_pvt_thread_yield();
 102                 TXN_CHECKPOINT( bdb->bi_dbenv,
 103                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 104         }
 105
 106         if ( ltid != NULL ) {
 107                 TXN_ABORT( ltid );
 108                 op->o_private = NULL;
 109         }
 110
 111         return rc;
 112 }
 113