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

   1 /* operational.c - bdb backend operational attributes function */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2004 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20
  21 #include <ac/string.h>
  22 #include <ac/socket.h>
  23
  24 #include "slap.h"
  25 #include "back-bdb.h"
  26 #include "external.h"
  27
  28 /*
  29  * sets *hasSubordinates to LDAP_COMPARE_TRUE/LDAP_COMPARE_FALSE
  30  * if the entry has children or not.
  31  */
  32 int
  33 bdb_hasSubordinates(
  34         Operation       *op,
  35         Entry           *e,
  36         int             *hasSubordinates )
  37 {
  38         int             rc;
  39
  40         assert( e );
  41
  42 retry:
  43         rc = bdb_cache_children( op, NULL, e );
  44
  45         switch( rc ) {
  46         case DB_LOCK_DEADLOCK:
  47         case DB_LOCK_NOTGRANTED:
  48                 ldap_pvt_thread_yield();
  49                 goto retry;
  50
  51         case 0:
  52                 *hasSubordinates = LDAP_COMPARE_TRUE;
  53                 break;
  54
  55         case DB_NOTFOUND:
  56                 *hasSubordinates = LDAP_COMPARE_FALSE;
  57                 rc = LDAP_SUCCESS;
  58                 break;
  59
  60         default:
  61 #ifdef NEW_LOGGING
  62                 LDAP_LOG ( OPERATION, ERR,
  63                         "=> bdb_hasSubordinates: has_children failed: %s (%d)\n",
  64                         db_strerror(rc), rc, 0 );
  65 #else
  66                 Debug(LDAP_DEBUG_ARGS,
  67                         "<=- bdb_hasSubordinates: has_children failed: %s (%d)\n",
  68                         db_strerror(rc), rc, 0 );
  69 #endif
  70                 rc = LDAP_OTHER;
  71         }
  72
  73         return rc;
  74 }
  75
  76 /*
  77  * sets the supported operational attributes (if required)
  78  */
  79 int
  80 bdb_operational(
  81         Operation       *op,
  82         SlapReply       *rs,
  83         int             opattrs,
  84         Attribute       **a )
  85 {
  86         Attribute       **aa = a;
  87
  88         assert( rs->sr_entry );
  89
  90         if ( opattrs || ad_inlist( slap_schema.si_ad_hasSubordinates, rs->sr_attrs ) ) {
  91                 int     hasSubordinates;
  92
  93                 rs->sr_err = bdb_hasSubordinates( op, rs->sr_entry, &hasSubordinates );
  94                 if ( rs->sr_err == LDAP_SUCCESS ) {
  95                         *aa = slap_operational_hasSubordinate( hasSubordinates == LDAP_COMPARE_TRUE );
  96                         if ( *aa != NULL ) {
  97                                 aa = &(*aa)->a_next;
  98                         }
  99                 }
 100         }
 101
 102         return rs->sr_err;
 103 }
 104