user.c

来自「This a framework to test new ideas in tr」· C语言 代码 · 共 66 行

/***************************************************************************
             user.c  -  Implements all the necessary functions for user-space
                            -------------------
    begin                :  2002
    authors              :  Linus Gasser
    emails               :  [e-mail]
 ***************************************************************************/

/***************************************************************************
                                 Changes
                                 -------
 date - name - description
 02-10-09 - ineiti- begin
 02-12-09 - ineiti - added userprocfs
 
 **************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/


/**
 * This is the library a user-space-test program has to link against.
 * It offers all kinds of different functions that are available in
 * RTLinux kernel-space and that need to be emulated in user-space.
 * Have fun...
 */


#include <stdlib.h>
#include <dlfcn.h>
#include "system.h"
#include "user.h"
#include "debugging.h"

#define DBG_LVL 0

void *bigphysarea_alloc_pages( int count, int align, int priority ) {
  return malloc( count * PAGE_SIZE );
}


void bigphysarea_free_pages( void *base ) {
  free( base );
}

int _init( void ) {
  PR_DBG( 4, "Initialising user\n" );
  return 0;
}

void _fini( void ) {
  PR_DBG( 4, "Stopping user, cleaning up modules\n" );
}


EXPORT_SYMBOL(bigphysarea_alloc_pages);
EXPORT_SYMBOL(bigphysarea_free_pages);