git.sur5r.net Git - openldap/blob - servers/slapd/back-ldbm/key.c

   1 /* index.c - routines for dealing with attribute indexes */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11
  12 #include <ac/string.h>
  13 #include <ac/socket.h>
  14
  15 #include "slap.h"
  16 #include "back-ldbm.h"
  17
  18 /* read a key */
  19 int
  20 key_read(
  21     Backend     *be,
  22         DBCache *db,
  23     struct berval *k,
  24         ID_BLOCK **idout
  25 )
  26 {
  27         Datum           key;
  28         ID_BLOCK                *idl;
  29
  30 #ifdef NEW_LOGGING
  31         LDAP_LOG(( "index", LDAP_LEVEL_ENTRY,
  32                    "key_read: enter\n" ));
  33 #else
  34         Debug( LDAP_DEBUG_TRACE, "=> key_read\n", 0, 0, 0 );
  35 #endif
  36
  37
  38         ldbm_datum_init( key );
  39         key.dptr = k->bv_val;
  40         key.dsize = k->bv_len;
  41
  42         idl = idl_fetch( be, db, key );
  43
  44 #ifdef NEW_LOGGING
  45         LDAP_LOG(( "index", LDAP_LEVEL_ENTRY,
  46                    "key_read: %ld candidates\n",
  47                    idl ? ID_BLOCK_NIDS(idl) : 0 ));
  48 #else
  49         Debug( LDAP_DEBUG_TRACE, "<= index_read %ld candidates\n",
  50                idl ? ID_BLOCK_NIDS(idl) : 0, 0, 0 );
  51 #endif
  52
  53
  54         *idout = idl;
  55         return LDAP_SUCCESS;
  56 }
  57
  58 /* Add or remove stuff from index files */
  59 int
  60 key_change(
  61     Backend             *be,
  62     DBCache     *db,
  63     struct berval *k,
  64     ID                  id,
  65     int                 op
  66 )
  67 {
  68         int     rc;
  69         Datum   key;
  70
  71 #ifdef NEW_LOGGING
  72         LDAP_LOG(( "index", LDAP_LEVEL_ENTRY,
  73                    "key_change: %s ID %lx\n",
  74                    op == SLAP_INDEX_ADD_OP ? "Add" : "Delete", (long)id ));
  75 #else
  76         Debug( LDAP_DEBUG_TRACE, "=> key_change(%s,%lx)\n",
  77                 op == SLAP_INDEX_ADD_OP ? "ADD":"DELETE", (long) id, 0 );
  78 #endif
  79
  80
  81         ldbm_datum_init( key );
  82         key.dptr = k->bv_val;
  83         key.dsize = k->bv_len;
  84
  85         ldap_pvt_thread_mutex_lock( &db->dbc_write_mutex );
  86         if (op == SLAP_INDEX_ADD_OP) {
  87             /* Add values */
  88             rc = idl_insert_key( be, db, key, id );
  89
  90         } else {
  91             /* Delete values */
  92             rc = idl_delete_key( be, db, key, id );
  93         }
  94         ldap_pvt_thread_mutex_unlock( &db->dbc_write_mutex );
  95
  96
  97 #ifdef NEW_LOGGING
  98         LDAP_LOG(( "index", LDAP_LEVEL_ENTRY,
  99                    "key_change: return %d\n", rc ));
 100 #else
 101         Debug( LDAP_DEBUG_TRACE, "<= key_change %d\n", rc, 0, 0 );
 102 #endif
 103
 104
 105         ldap_pvt_thread_yield();
 106
 107         return rc;
 108 }