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 "external.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         Operation       *op,
  25         Entry           *e,
  26         int             *hasSubordinates )
  27 {
  28         int             rc;
  29
  30         assert( e );
  31
  32 retry:
  33         rc = bdb_cache_children( op, NULL, e );
  34
  35         switch( rc ) {
  36         case DB_LOCK_DEADLOCK:
  37         case DB_LOCK_NOTGRANTED:
  38                 ldap_pvt_thread_yield();
  39                 goto retry;
  40
  41         case 0:
  42                 *hasSubordinates = LDAP_COMPARE_TRUE;
  43                 break;
  44
  45         case DB_NOTFOUND:
  46                 *hasSubordinates = LDAP_COMPARE_FALSE;
  47                 rc = LDAP_SUCCESS;
  48                 break;
  49
  50         default:
  51 #ifdef NEW_LOGGING
  52                 LDAP_LOG ( OPERATION, ERR,
  53                         "=> bdb_hasSubordinates: has_children failed: %s (%d)\n",
  54                         db_strerror(rc), rc, 0 );
  55 #else
  56                 Debug(LDAP_DEBUG_ARGS,
  57                         "<=- bdb_hasSubordinates: has_children failed: %s (%d)\n",
  58                         db_strerror(rc), rc, 0 );
  59 #endif
  60                 rc = LDAP_OTHER;
  61         }
  62
  63         return rc;
  64 }
  65
  66 /*
  67  * sets the supported operational attributes (if required)
  68  */
  69 int
  70 bdb_operational(
  71         Operation       *op,
  72         SlapReply       *rs,
  73         int             opattrs,
  74         Attribute       **a )
  75 {
  76         Attribute       **aa = a;
  77
  78         assert( rs->sr_entry );
  79
  80         if ( opattrs || ad_inlist( slap_schema.si_ad_hasSubordinates, rs->sr_attrs ) ) {
  81                 int     hasSubordinates;
  82
  83                 rs->sr_err = bdb_hasSubordinates( op, rs->sr_entry, &hasSubordinates );
  84                 if ( rs->sr_err == LDAP_SUCCESS ) {
  85                         *aa = slap_operational_hasSubordinate( hasSubordinates == LDAP_COMPARE_TRUE );
  86                         if ( *aa != NULL ) {
  87                                 aa = &(*aa)->a_next;
  88                         }
  89                 }
  90         }
  91
  92         return rs->sr_err;
  93 }
  94