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

   1 /* operational.c - bdb backend operational attributes function */
   2 /*
   3  * Copyright 1998-2003 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 *hasSubordinates to LDAP_COMPARE_TRUE/LDAP_COMPARE_FALSE
  20  * if the entry has children or not.
  21  */
  22 int
  23 bdb_hasSubordinates(
  24         BackendDB       *be,
  25         Connection      *conn,
  26         Operation       *op,
  27         Entry           *e,
  28         int             *hasSubordinates )
  29 {
  30         int             rc;
  31
  32         assert( e );
  33         assert( hasSubordinates );
  34
  35 retry:
  36         rc = bdb_dn2id_children( be, NULL, &e->e_nname, 0 );
  37
  38         switch( rc ) {
  39         case DB_LOCK_DEADLOCK:
  40         case DB_LOCK_NOTGRANTED:
  41                 ldap_pvt_thread_yield();
  42                 goto retry;
  43
  44         case 0:
  45                 *hasSubordinates = LDAP_COMPARE_TRUE;
  46                 break;
  47
  48         case DB_NOTFOUND:
  49                 *hasSubordinates = LDAP_COMPARE_FALSE;
  50                 rc = LDAP_SUCCESS;
  51                 break;
  52
  53         default:
  54 #ifdef NEW_LOGGING
  55                 LDAP_LOG ( OPERATION, ERR,
  56                         "=> bdb_hasSubordinates: has_children failed: %s (%d)\n",
  57                         db_strerror(rc), rc, 0 );
  58 #else
  59                 Debug(LDAP_DEBUG_ARGS,
  60                         "<=- bdb_hasSubordinates: has_children failed: %s (%d)\n",
  61                         db_strerror(rc), rc, 0 );
  62 #endif
  63                 rc = LDAP_OTHER;
  64         }
  65
  66         return rc;
  67 }
  68
  69 /*
  70  * sets the supported operational attributes (if required)
  71  */
  72 int
  73 bdb_operational(
  74         BackendDB       *be,
  75         Connection      *conn,
  76         Operation       *op,
  77         Entry           *e,
  78         AttributeName           *attrs,
  79         int             opattrs,
  80         Attribute       **a )
  81 {
  82         Attribute       **aa = a;
  83         int             rc = 0;
  84
  85         assert( e );
  86
  87         if ( opattrs || ad_inlist( slap_schema.si_ad_hasSubordinates, attrs ) ) {
  88                 int     hasSubordinates;
  89
  90                 rc = bdb_hasSubordinates( be, conn, op, e, &hasSubordinates );
  91                 if ( rc == LDAP_SUCCESS ) {
  92                         *aa = slap_operational_hasSubordinate( hasSubordinates == LDAP_COMPARE_TRUE );
  93                         if ( *aa != NULL ) {
  94                                 aa = &(*aa)->a_next;
  95                         }
  96                 }
  97         }
  98
  99         return rc;
 100 }
 101