external/bsd/openldap/dist/servers/slapd/back-ldap/unbind.c

   1 /* unbind.c - ldap backend unbind function */
   2 /* $OpenLDAP: pkg/ldap/servers/slapd/back-ldap/unbind.c,v 1.33.2.4 2008/02/11 23:26:46 kurt Exp $ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1999-2008 The OpenLDAP Foundation.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * Portions Copyright 2000-2003 Pierangelo Masarati.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18 /* ACKNOWLEDGEMENTS:
  19  * This work was initially developed by the Howard Chu for inclusion
  20  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  21  * Masarati.
  22  */
  23
  24 #include "portable.h"
  25
  26 #include <stdio.h>
  27
  28 #include <ac/errno.h>
  29 #include <ac/socket.h>
  30 #include <ac/string.h>
  31
  32 #include "slap.h"
  33 #include "back-ldap.h"
  34
  35 int
  36 ldap_back_conn_destroy(
  37                 Backend         *be,
  38                 Connection      *conn
  39 )
  40 {
  41         ldapinfo_t      *li = (ldapinfo_t *) be->be_private;
  42         ldapconn_t      *lc = NULL, lc_curr;
  43
  44         Debug( LDAP_DEBUG_TRACE,
  45                 "=>ldap_back_conn_destroy: fetching conn %ld\n",
  46                 conn->c_connid, 0, 0 );
  47
  48         lc_curr.lc_conn = conn;
  49
  50         ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
  51 #if LDAP_BACK_PRINT_CONNTREE > 0
  52         ldap_back_print_conntree( li, ">>> ldap_back_conn_destroy" );
  53 #endif /* LDAP_BACK_PRINT_CONNTREE */
  54         while ( ( lc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)&lc_curr, ldap_back_conn_cmp ) ) != NULL )
  55         {
  56                 Debug( LDAP_DEBUG_TRACE,
  57                         "=>ldap_back_conn_destroy: destroying conn %ld "
  58                         "refcnt=%d flags=0x%08x\n",
  59                         LDAP_BACK_PCONN_ID( lc ),
  60                         lc->lc_refcnt, lc->lc_lcflags );
  61
  62                 if ( lc->lc_refcnt > 0 ) {
  63                         /* someone else might be accessing the connection;
  64                          * mark for deletion */
  65                         LDAP_BACK_CONN_CACHED_CLEAR( lc );
  66                         LDAP_BACK_CONN_TAINTED_SET( lc );
  67
  68                 } else {
  69                         ldap_back_conn_free( lc );
  70                 }
  71         }
  72 #if LDAP_BACK_PRINT_CONNTREE > 0
  73         ldap_back_print_conntree( li, "<<< ldap_back_conn_destroy" );
  74 #endif /* LDAP_BACK_PRINT_CONNTREE */
  75         ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
  76
  77         return 0;
  78 }