/* * * (c) Copyright 1989 OPEN SOFTWARE FOUNDATION, INC. * (c) Copyright 1989 HEWLETT-PACKARD COMPANY * (c) Copyright 1989 DIGITAL EQUIPMENT CORPORATION * To anyone who acknowledges that this file is provided "AS IS" * without any express or implied warranty: * permission to use, copy, modify, and distribute this * file for any purpose is hereby granted without fee, provided that * the above copyright notices and this notice appears in all source * code copies, and that none of the names of Open Software * Foundation, Inc., Hewlett-Packard Company, or Digital Equipment * Corporation be used in advertising or publicity pertaining to * distribution of the software without specific, written prior * permission. Neither Open Software Foundation, Inc., Hewlett- * Packard Company, nor Digital Equipment Corporation makes any * representations about the suitability of this software for any * purpose. * */ /* */ /* ** ** NAME: ** ** ndrold.idl ** ** FACILITY: ** ** Network Data Representation (NDR) ** ** ABSTRACT: ** ** !---------------------------------------! ** !-- THIS INTERFACE FOR IMPORTING ONLY --! ** !---- DO NOT COMPILE THIS INTERFACE ----! ** !---------------------------------------! ** ** This local interface logically defines the data type "ndr_old_format_t" ** (called "rpc_$drep_t" prior to v2). The actual representation of ** this data type is not expressible in NIDL since it is a struct that ** uses bit field descriptions. For binary compatibility with old ** (pre-v2) stubs, we need to maintain the exact bit field representation. ** The problem with not defining this data type in NIDL is that the ** data type needs to be used in the definitions of other local ** interfaces. (These local interfaces are part of v2.) Prior to v2, ** the way we solved this problem was to make the NIDL compiler treat ** "rpc_$drep_t" as a builtin type. This less-than-ideal solution was ** not carried forward to v2. Instead, we do something almost as ugly, ** but which requires no hacks to the NIDL compiler itself. What we ** do is make local interfaces that need this data type import this ** interface. This makes use of this data type valid. However, we ** never actually run this interface itself through the NIDL compiler. ** Rather, we make the build process substitute a hand-crafted "ndrold.h" ** which contains the correct definition of "ndr_old_format_t". ** ** */ [local] interface ndrold { /* * Data representation descriptor type for NCS pre-v2. */ typedef struct { unsigned long int_rep /* : 4 */; unsigned long char_rep /* : 4 */; unsigned long float_rep /* : 8 */; unsigned long reserved /*: 16 */; } ndr_old_format_t; }