Fix - on little-endian machines, store IDs in big-endian order. Otherwise

BDB's default key sort algorithm sorts in the wrong order (and there's no
convenient way to select the correct algorithm). This is an incompatible
change to the database format but will improve back-ldbm's add/delete
characteristics.

servers/slapd/back-ldbm/id2entry.c

@@ -25,6 +25,9 @@ id2entry_add( Backend *be, Entry *e )
 	DBCache	*db;
 	Datum		key, data;
 	int		len, rc, flags;
+#ifndef WORDS_BIGENDIAN
+	ID		id;
+#endif
 
 	ldbm_datum_init( key );
 	ldbm_datum_init( data );
@@ -52,7 +55,12 @@ id2entry_add( Backend *be, Entry *e )
 		return( -1 );
 	}
 
+#ifdef WORDS_BIGENDIAN
 	key.dptr = (char *) &e->e_id;
+#else
+	id = htonl(e->e_id);
+	key.dptr = (char *) &id;
+#endif
 	key.dsize = sizeof(ID);
 
 	ldap_pvt_thread_mutex_lock( &entry2str_mutex );
@@ -85,6 +93,9 @@ id2entry_delete( Backend *be, Entry *e )
 	DBCache	*db;
 	Datum		key;
 	int		rc;
+#ifndef WORDS_BIGENDIAN
+	ID		id;
+#endif
 
 #ifdef NEW_LOGGING
 	LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
@@ -130,7 +141,12 @@ id2entry_delete( Backend *be, Entry *e )
 
 	}
 
+#ifdef WORDS_BIGENDIAN
 	key.dptr = (char *) &e->e_id;
+#else
+	id = htonl(e->e_id);
+	key.dptr = (char *) &id;
+#endif
 	key.dsize = sizeof(ID);
 
 	rc = ldbm_cache_delete( db, key );
@@ -155,6 +171,9 @@ id2entry_rw( Backend *be, ID id, int rw )
 	DBCache	*db;
 	Datum		key, data;
 	Entry		*e;
+#ifndef WORDS_BIGENDIAN
+	ID		id2;
+#endif
 
 	ldbm_datum_init( key );
 	ldbm_datum_init( data );
@@ -195,7 +214,12 @@ id2entry_rw( Backend *be, ID id, int rw )
 		return( NULL );
 	}
 
+#ifdef WORDS_BIGENDIAN
 	key.dptr = (char *) &id;
+#else
+	id2 = htonl(id);
+	key.dptr = (char *) &id2;
+#endif
 	key.dsize = sizeof(ID);
 
 	data = ldbm_cache_fetch( db, key );