]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/back-ldbm/idl.c
ITS#4310 seems to affect also back-ldbm
[openldap] / servers / slapd / back-ldbm / idl.c
index 8bfc9164631cd06b523a4fe781905c9bd91c8fa6..6feeee00501382d5b9179011413a33dd03cf3e2f 100644 (file)
@@ -1,8 +1,17 @@
 /* idl.c - ldap id list handling routines */
 /* $OpenLDAP$ */
-/*
- * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2006 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
  */
 
 #include "portable.h"
@@ -58,7 +67,7 @@ static void idl_check(ID_BLOCK *idl)
 #ifndef USE_INDIRECT_NIDS
        if( ID_BLOCK_INDIRECT(idl) )
        {
-               for ( max = 0; !ID_BLOCK_BOID(idl, max); max++ ) ;
+               for ( max = 0; !ID_BLOCK_NOID(idl, max); max++ ) ;
        } else
 #endif
        {
@@ -115,13 +124,9 @@ void
 idl_free( ID_BLOCK *idl )
 {
        if ( idl == NULL ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( INDEX, INFO, "idl_free: called with NULL pointer\n" , 0,0,0);
-#else
                Debug( LDAP_DEBUG_TRACE,
                        "idl_free: called with NULL pointer\n",
                        0, 0, 0 );
-#endif
 
                return;
        }
@@ -182,8 +187,7 @@ idl_fetch(
        Datum   data;
        ID_BLOCK        *idl;
        ID_BLOCK        **tmp;
-       int     nids;
-       unsigned i;
+       unsigned        i, nids, nblocks;
 
        idl = idl_fetch_one( be, db, key );
 
@@ -209,38 +213,28 @@ idl_fetch(
 
 #ifndef USE_INDIRECT_NIDS
        /* count the number of blocks & allocate space for pointers to them */
-       for ( i = 0; !ID_BLOCK_NOID(idl, i); i++ )
+       for ( nblocks = 0; !ID_BLOCK_NOID(idl, nblocks); nblocks++ )
                ;       /* NULL */
 #else
-       i = ID_BLOCK_NIDS(idl);
+       nblocks = ID_BLOCK_NIDS(idl);
 #endif
-       tmp = (ID_BLOCK **) ch_malloc( (i + 1) * sizeof(ID_BLOCK *) );
+       tmp = (ID_BLOCK **) ch_malloc( nblocks * sizeof(ID_BLOCK *) );
 
        /* read in all the blocks */
        cont_alloc( &data, &key );
        nids = 0;
-#ifndef USE_INDIRECT_NIDS
-       for ( i = 0; !ID_BLOCK_NOID(idl, i); i++ ) {
-#else
-       for ( i = 0; i < ID_BLOCK_NIDS(idl); i++ ) {
-#endif
+       for ( i = 0; i < nblocks; i++ ) {
                cont_id( &data, ID_BLOCK_ID(idl, i) );
 
                if ( (tmp[i] = idl_fetch_one( be, db, data )) == NULL ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( INDEX, INFO,
-                                  "idl_fetch: idl_fetch_one returned NULL\n", 0,0,0 );
-#else
                        Debug( LDAP_DEBUG_ANY,
                            "idl_fetch: one returned NULL\n", 0, 0, 0 );
-#endif
 
                        continue;
                }
 
                nids += ID_BLOCK_NIDS(tmp[i]);
        }
-       tmp[i] = NULL;
        cont_free( &data );
        idl_free( idl );
 
@@ -250,7 +244,7 @@ idl_fetch(
        nids = 0;
 
        /* copy in all the ids from the component blocks */
-       for ( i = 0; tmp[i] != NULL; i++ ) {
+       for ( i = 0; i < nblocks; i++ ) {
                if ( tmp[i] == NULL ) {
                        continue;
                }
@@ -265,18 +259,14 @@ idl_fetch(
        }
        free( (char *) tmp );
 
+       assert( ID_BLOCK_NIDS(idl) == nids );
+
 #ifdef LDBM_DEBUG_IDL
        idl_check(idl);
 #endif
 
-#ifdef NEW_LOGGING
-       LDAP_LOG( INDEX, ENTRY, 
-                  "idl_fetch: %ld ids (%ld max)\n",
-                  ID_BLOCK_NIDS(idl), ID_BLOCK_NMAXN(idl), 0 );
-#else
        Debug( LDAP_DEBUG_TRACE, "<= idl_fetch %ld ids (%ld max)\n",
               ID_BLOCK_NIDS(idl), ID_BLOCK_NMAXN(idl), 0 );
-#endif
 
        return( idl );
 }
@@ -308,11 +298,6 @@ idl_store(
        flags = LDBM_REPLACE;
        rc = ldbm_cache_store( db, key, data, flags );
 
-#ifdef LDBM_DEBUG
-       Statslog( LDAP_DEBUG_STATS, "<= idl_store(): rc=%d\n",
-               rc, 0, 0, 0, 0 );
-#endif
-
        /* Debug( LDAP_DEBUG_TRACE, "<= idl_store %d\n", rc, 0, 0 ); */
        return( rc );
 }
@@ -418,14 +403,9 @@ idl_change_first(
 
        /* delete old key block */
        if ( (rc = ldbm_cache_delete( db, bkey )) != 0 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( INDEX, INFO, 
-                          "idl_change_first: ldbm_cache_delete returned %d\n", rc, 0, 0 );
-#else
                Debug( LDAP_DEBUG_ANY,
                    "idl_change_first: ldbm_cache_delete returned %d\n",
                        rc, 0, 0 );
-#endif
 
                return( rc );
        }
@@ -434,13 +414,8 @@ idl_change_first(
        cont_id( &bkey, ID_BLOCK_ID(b, 0) );
 
        if ( (rc = idl_store( be, db, bkey, b )) != 0 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( INDEX, INFO, 
-                          "idl_change_first: idl_store returned %d\n", rc, 0, 0 );
-#else
                Debug( LDAP_DEBUG_ANY,
                    "idl_change_first: idl_store returned %d\n", rc, 0, 0 );
-#endif
 
                return( rc );
        }
@@ -448,13 +423,8 @@ idl_change_first(
        /* update + write indirect header block */
        ID_BLOCK_ID(h, pos) = ID_BLOCK_ID(b, 0);
        if ( (rc = idl_store( be, db, hkey, h )) != 0 ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( INDEX, INFO, 
-                          "idl_change_first: idl_store returned %s\n", rc, 0, 0 );
-#else
                Debug( LDAP_DEBUG_ANY,
                    "idl_change_first: idl_store returned %d\n", rc, 0, 0 );
-#endif
 
                return( rc );
        }
@@ -562,14 +532,13 @@ idl_insert_key(
 
 #ifndef USE_INDIRECT_NIDS
        /* select the block to try inserting into *//* XXX linear search XXX */
-       for ( i = 0; !ID_BLOCK_NOID(idl, i) && id > ID_BLOCK_ID(idl, i); i++ )
+       for ( i = 0; !ID_BLOCK_NOID(idl, i) && id >= ID_BLOCK_ID(idl, i); i++ )
                ;       /* NULL */
 #else
        i = idl_find(idl, id);
-       if (ID_BLOCK_ID(idl, i) < id)
+       if (ID_BLOCK_ID(idl, i) <= id)
                i++;
 #endif
-
        if ( i != 0 ) {
                i--;
                first = 0;
@@ -577,18 +546,18 @@ idl_insert_key(
                first = 1;
        }
 
+       /* At this point, the following condition must be true:
+        * ID_BLOCK_ID(idl, i) <= id && id < ID_BLOCK_ID(idl, i+1)
+        * except when i is the first or the last block.
+        */
+
        /* get the block */
        cont_alloc( &k2, &key );
        cont_id( &k2, ID_BLOCK_ID(idl, i) );
 
        if ( (tmp = idl_fetch_one( be, db, k2 )) == NULL ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG( INDEX, ERR,
-                          "idl_insert_key: nonexistent continuation block\n", 0, 0, 0 );
-#else
                Debug( LDAP_DEBUG_ANY, "idl_insert_key: nonexistent continuation block\n",
                    0, 0, 0 );
-#endif
 
                cont_free( &k2 );
                idl_free( idl );
@@ -599,13 +568,8 @@ idl_insert_key(
        switch ( idl_insert( &tmp, id, db->dbc_maxids ) ) {
        case 0:         /* id inserted ok */
                if ( (rc = idl_store( be, db, k2, tmp )) != 0 ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( INDEX, ERR, 
-                                  "ids_insert_key: idl_store returned %d\n", rc, 0, 0 );
-#else
                        Debug( LDAP_DEBUG_ANY,
                            "idl_insert_key: idl_store returned %d\n", rc, 0, 0 );
-#endif
 
                }
                break;
@@ -638,21 +602,17 @@ idl_insert_key(
 #else
                if ( !first && (unsigned long)(i + 1) < ID_BLOCK_NIDS(idl) ) {
 #endif
+                       Datum k3;
                        /* read it in */
-                       cont_alloc( &k2, &key );
-                       cont_id( &k2, ID_BLOCK_ID(idl, i + 1) );
-                       if ( (tmp2 = idl_fetch_one( be, db, k2 )) == NULL ) {
-#ifdef NEW_LOGGING
-                               LDAP_LOG( INDEX, ERR,
-                                          "idl_insert_key: idl_fetch_one returned NULL\n", 0, 0, 0);
-#else
+                       cont_alloc( &k3, &key );
+                       cont_id( &k3, ID_BLOCK_ID(idl, i + 1) );
+                       if ( (tmp2 = idl_fetch_one( be, db, k3 )) == NULL ) {
                                Debug( LDAP_DEBUG_ANY,
                                    "idl_insert_key: idl_fetch_one returned NULL\n",
                                    0, 0, 0 );
-#endif
 
                                /* split the original block */
-                               cont_free( &k2 );
+                               cont_free( &k3 );
                                goto split;
                        }
 
@@ -671,13 +631,8 @@ idl_insert_key(
                            rc = idl_insert( &tmp, id, db->dbc_maxids );
 
                            if ( (rc = idl_store( be, db, k2, tmp )) != 0 ) {
-#ifdef NEW_LOGGING
-                               LDAP_LOG( INDEX, ERR, 
-                                       "idl_insert_key: idl_store returned %d\n", rc, 0, 0 );
-#else
                                Debug( LDAP_DEBUG_ANY,
                            "idl_insert_key: idl_store returned %d\n", rc, 0, 0 );
-#endif
 
                            }
 
@@ -692,7 +647,7 @@ idl_insert_key(
                            db->dbc_maxids )) ) {
                        case 1:         /* id inserted first in block */
                                rc = idl_change_first( be, db, key, idl,
-                                   i + 1, k2, tmp2 );
+                                   i + 1, k3, tmp2 );
                                /* FALL */
 
                        case 2:         /* id already there - how? */
@@ -702,20 +657,16 @@ idl_insert_key(
                                         * will always be called.
                                         */
                                if ( rc == 2 ) {
-#ifdef NEW_LOGGING
-                                       LDAP_LOG( INDEX, INFO, 
-                                                  "idl_insert_key: id %ld is already in next block\n", 
-                                                  id, 0, 0 );
-#else
                                        Debug( LDAP_DEBUG_ANY,
                                            "idl_insert_key: id %ld already in next block\n",
                                            id, 0, 0 );
-#endif
 
                                }
 
                                idl_free( tmp );
                                idl_free( tmp2 );
+                               cont_free( &k3 );
+                               cont_free( &k2 );
                                idl_free( idl );
                                return( 0 );
 
@@ -724,6 +675,7 @@ idl_insert_key(
                        }
 
                        idl_free( tmp2 );
+                       cont_free( &k3 );
                }
 
 split:
@@ -944,26 +896,24 @@ idl_delete_key (
           */
        cont_alloc( &data, &key );
 #ifndef USE_INDIRECT_NIDS
-       for ( nids = 0; !ID_BLOCK_NOID(idl, nids); nids++ )
-               ;       /* NULL */
+       for ( nids = 0; !ID_BLOCK_NOID(idl, nids); nids++ ) {
+               ;       /* Empty */
+       }
 
        for ( j = 0; j<nids; j++ ) 
 #else
        nids = ID_BLOCK_NIDS(idl);
-       for ( j = idl_find(idl, id); j >= 0; j = -1)    /* execute once */
+       j = idl_find(idl, id);
+       if ( ID_BLOCK_ID(idl, j) > id ) j--;
+       for (; j>=0; j = -1 ) /* execute once */
 #endif
        {
                ID_BLOCK *tmp;
                cont_id( &data, ID_BLOCK_ID(idl, j) );
 
                if ( (tmp = idl_fetch_one( be, db, data )) == NULL ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG( INDEX, INFO,
-                                  "idl_delete_key: idl_fetch_one returned NULL\n", 0, 0, 0 );
-#else
                        Debug( LDAP_DEBUG_ANY,
                            "idl_delete_key: idl_fetch of returned NULL\n", 0, 0, 0 );
-#endif
 
                        continue;
                }