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 #include "external.h"
  18
  19 /*
  20  * sets *hasSubordinates to LDAP_COMPARE_TRUE/LDAP_COMPARE_FALSE
  21  * if the entry has children or not.
  22  */
  23 int
  24 bdb_hasSubordinates(
  25         Operation       *op,
  26         Entry           *e,
  27         int             *hasSubordinates )
  28 {
  29         int             rc;
  30
  31         assert( e );
  32
  33 retry:
  34         rc = bdb_dn2id_children( op, NULL, e );
  35
  36         switch( rc ) {
  37         case DB_LOCK_DEADLOCK:
  38         case DB_LOCK_NOTGRANTED:
  39                 ldap_pvt_thread_yield();
  40                 goto retry;
  41
  42         case 0:
  43                 *hasSubordinates = LDAP_COMPARE_TRUE;
  44                 break;
  45
  46         case DB_NOTFOUND:
  47                 *hasSubordinates = LDAP_COMPARE_FALSE;
  48                 rc = LDAP_SUCCESS;
  49                 break;
  50
  51         default:
  52 #ifdef NEW_LOGGING
  53                 LDAP_LOG ( OPERATION, ERR,
  54                         "=> bdb_hasSubordinates: has_children failed: %s (%d)\n",
  55                         db_strerror(rc), rc, 0 );
  56 #else
  57                 Debug(LDAP_DEBUG_ARGS,
  58                         "<=- bdb_hasSubordinates: has_children failed: %s (%d)\n",
  59                         db_strerror(rc), rc, 0 );
  60 #endif
  61                 rc = LDAP_OTHER;
  62         }
  63
  64         return rc;
  65 }
  66
  67 /*
  68  * sets the supported operational attributes (if required)
  69  */
  70 int
  71 bdb_operational(
  72         Operation       *op,
  73         SlapReply       *rs,
  74         int             opattrs,
  75         Attribute       **a )
  76 {
  77         Attribute       **aa = a;
  78
  79         assert( rs->sr_entry );
  80
  81         if ( opattrs || ad_inlist( slap_schema.si_ad_hasSubordinates, rs->sr_attrs ) ) {
  82                 int     hasSubordinates;
  83
  84                 rs->sr_err = bdb_hasSubordinates( op, rs->sr_entry, &hasSubordinates );
  85                 if ( rs->sr_err == LDAP_SUCCESS ) {
  86                         *aa = slap_operational_hasSubordinate( hasSubordinates == LDAP_COMPARE_TRUE );
  87                         if ( *aa != NULL ) {
  88                                 aa = &(*aa)->a_next;
  89                         }
  90                 }
  91         }
  92
  93         return rs->sr_err;
  94 }
  95