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

   1 /* $OpenLDAP: pkg/ldap/servers/slapd/back-meta/unbind.c,v 1.30.2.5 2008/02/11 23:26:47 kurt Exp $ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1999-2008 The OpenLDAP Foundation.
   5  * Portions Copyright 2001-2003 Pierangelo Masarati.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in the file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17 /* ACKNOWLEDGEMENTS:
  18  * This work was initially developed by the Howard Chu for inclusion
  19  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  20  * Masarati.
  21  */
  22
  23 #include "portable.h"
  24
  25 #include <stdio.h>
  26
  27 #include <ac/errno.h>
  28 #include <ac/socket.h>
  29 #include <ac/string.h>
  30
  31 #include "slap.h"
  32 #include "../back-ldap/back-ldap.h"
  33 #include "back-meta.h"
  34
  35 int
  36 meta_back_conn_destroy(
  37         Backend         *be,
  38         Connection      *conn )
  39 {
  40         metainfo_t      *mi = ( metainfo_t * )be->be_private;
  41         metaconn_t      *mc,
  42                         mc_curr = { 0 };
  43         int             i;
  44
  45
  46         Debug( LDAP_DEBUG_TRACE,
  47                 "=>meta_back_conn_destroy: fetching conn=%ld DN=\"%s\"\n",
  48                 conn->c_connid,
  49                 BER_BVISNULL( &conn->c_ndn ) ? "" : conn->c_ndn.bv_val, 0 );
  50
  51         mc_curr.mc_conn = conn;
  52
  53         ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
  54 #if META_BACK_PRINT_CONNTREE > 0
  55         meta_back_print_conntree( mi, ">>> meta_back_conn_destroy" );
  56 #endif /* META_BACK_PRINT_CONNTREE */
  57         while ( ( mc = avl_delete( &mi->mi_conninfo.lai_tree, ( caddr_t )&mc_curr, meta_back_conn_cmp ) ) != NULL )
  58         {
  59                 Debug( LDAP_DEBUG_TRACE,
  60                         "=>meta_back_conn_destroy: destroying conn %ld "
  61                         "refcnt=%d flags=0x%08x\n",
  62                         LDAP_BACK_PCONN_ID( mc ),
  63                         mc->mc_refcnt, mc->msc_mscflags );
  64
  65                 if ( mc->mc_refcnt > 0 ) {
  66                         /* someone else might be accessing the connection;
  67                          * mark for deletion */
  68                         LDAP_BACK_CONN_CACHED_CLEAR( mc );
  69                         LDAP_BACK_CONN_TAINTED_SET( mc );
  70
  71                 } else {
  72                         meta_back_conn_free( mc );
  73                 }
  74         }
  75 #if META_BACK_PRINT_CONNTREE > 0
  76         meta_back_print_conntree( mi, "<<< meta_back_conn_destroy" );
  77 #endif /* META_BACK_PRINT_CONNTREE */
  78         ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
  79
  80         /*
  81          * Cleanup rewrite session
  82          */
  83         for ( i = 0; i < mi->mi_ntargets; ++i ) {
  84                 rewrite_session_delete( mi->mi_targets[ i ]->mt_rwmap.rwm_rw, conn );
  85         }
  86
  87         return 0;
  88 }
  89