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         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
  31         int             rc;
  32
  33         assert( e );
  34         assert( hasSubordinates );
  35
  36 retry:
  37         rc = bdb_dn2id_children( be, NULL, &e->e_nname, 0 );
  38
  39         switch( rc ) {
  40         case DB_LOCK_DEADLOCK:
  41         case DB_LOCK_NOTGRANTED:
  42                 ldap_pvt_thread_yield();
  43                 goto retry;
  44
  45         case 0:
  46                 *hasSubordinates = LDAP_COMPARE_TRUE;
  47                 break;
  48
  49         case DB_NOTFOUND:
  50                 *hasSubordinates = LDAP_COMPARE_FALSE;
  51                 rc = LDAP_SUCCESS;
  52                 break;
  53
  54         default:
  55 #ifdef NEW_LOGGING
  56                 LDAP_LOG ( OPERATION, ERR,
  57                         "=> bdb_hasSubordinates: has_children failed: %s (%d)\n",
  58                         db_strerror(rc), rc, 0 );
  59 #else
  60                 Debug(LDAP_DEBUG_ARGS,
  61                         "<=- bdb_hasSubordinates: has_children failed: %s (%d)\n",
  62                         db_strerror(rc), rc, 0 );
  63 #endif
  64                 rc = LDAP_OTHER;
  65         }
  66
  67         return rc;
  68 }
  69
  70 /*
  71  * sets the supported operational attributes (if required)
  72  */
  73 int
  74 bdb_operational(
  75         BackendDB       *be,
  76         Connection      *conn,
  77         Operation       *op,
  78         Entry           *e,
  79         AttributeName           *attrs,
  80         int             opattrs,
  81         Attribute       **a )
  82 {
  83         Attribute       **aa = a;
  84         int             rc = 0;
  85
  86         assert( e );
  87
  88         if ( opattrs || ad_inlist( slap_schema.si_ad_hasSubordinates, attrs ) ) {
  89                 int     hasSubordinates;
  90
  91                 rc = bdb_hasSubordinates( be, conn, op, e, &hasSubordinates );
  92                 if ( rc == LDAP_SUCCESS ) {
  93                         *aa = slap_operational_hasSubordinate( hasSubordinates == LDAP_COMPARE_TRUE );
  94                         if ( *aa != NULL ) {
  95                                 aa = &(*aa)->a_next;
  96                         }
  97                 }
  98         }
  99
 100         return rc;
 101 }
 102