trv_copy.c

来自「mpc8xx driver(led), based on tqm8」· C语言 代码 · 共 57 行

/***********************************************************************
 *
 * (C) Copyright 2000
 * Jean-Jacques Germond, Fr閐閞ic Soulier, Christian Batt; Alcatel
 * C/O [e-mail]
 *
 * All rights reserved.
 *
 * This code is free software; you can redistribute it and/or
 * modify it under the terms of the GNU *Library* General Public License
 * as published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This code is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * *Library* General Public License for more details.
 *
 * You should have received a copy of the GNU *Library* General Public
 * License along with this program (see file COPYING.LIB); if not,
 * write to the Free Software Foundation, Inc., 675 Mass Ave,
 * Cambridge, MA 02139, USA.
 *
 ***********************************************************************/

/* The "trivial module" copy from/to user spece routines  */

/* See AR pg:21  */
#define __NO_VERSION__ 

#include "trv_def.h"
#include "asm/uaccess.h"    /* Kernel accesses to/from user space */

/* copy_from_user & copy_to_user are inlined in .../asm/uaccess.h.
 * but I believe that error are not proprly handled in 2.2.5 
 * for the arm case at least.  So I preffer to encapsulate
 * The code in a special file to begin with.
 * (errors are still not well notified yet).
 */

    int
trv_copy_from_user(void *to, const void *from, unsigned long n)
{
  copy_from_user(to,from,n);
  return 0;    /* Ok return : No error notification yet */
}


    int
trv_copy_to_user(void *to, const void *from, unsigned long n)
{
  copy_to_user(to,from,n);
  return 0;    /* Ok return : No error notification yet */
}