lib/libc/citrus/citrus_module.h

   1 /*      $NetBSD: src/lib/libc/citrus/citrus_module.h,v 1.1 2002/03/17 22:14:20 tshiozak Exp $   */
   2 /*      $DragonFly: src/lib/libc/citrus/citrus_module.h,v 1.2 2005/07/04 10:02:43 joerg Exp $ */
   3
   4 /*-
   5  * Copyright (c)2002 Citrus Project,
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  */
  30
  31 #ifndef _CITRUS_MODULE_H_
  32 #define _CITRUS_MODULE_H_
  33
  34 #include <sys/linker_set.h>
  35
  36 struct citrus_metadata {
  37     const char *module_name;
  38     const char *interface_name;
  39     void *module_ops;
  40 };
  41
  42 #ifdef __PIC__
  43 #define CITRUS_MODULE(name, interface, ops)
  44 #else
  45
  46 #define CITRUS_MODULE(name, interface, ops)                             \
  47 static const char __citrus_module_ ## name ## _ ## interface ## _str[] = \
  48     #name; \
  49 static struct citrus_metadata                                           \
  50     __citrus_module_ ## name ## _ ## interface = {                      \
  51             __citrus_module_ ## name ## _ ##interface ## _str,          \
  52             #interface, ops                                             \
  53 };                                                                      \
  54 __weak_reference(__citrus_module_ ## name ## _ ## interface ## _str,    \
  55                  _citrus_module_ ## name);                              \
  56 DATA_SET(citrus_set, __citrus_module_ ## name ## _ ## interface);
  57 #endif
  58
  59 typedef struct _citrus_module_rec *_citrus_module_t;
  60
  61 __BEGIN_DECLS
  62 void *_citrus_find_getops(_citrus_module_t __restrict,
  63                           const char * __restrict, const char * __restrict);
  64 int _citrus_load_module(_citrus_module_t * __restrict,
  65                         const char * __restrict);
  66 void _citrus_unload_module(_citrus_module_t);
  67 __END_DECLS
  68
  69 #endif