2.3-InternetRadio/nutos/nut/crt/fseek.c

/*
 * Copyright (C) 2001-2003 by egnite Software GmbH. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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/*
 * $Log$
 * Revision 1.3  2009/01/17 15:37:52  haraldkipp
 * Added some NUTASSERT macros to check function parameters.
 *
 * Revision 1.2  2005/08/05 11:17:53  olereinhardt
 * Added support for _seek, _tell, fseek, ftell functions
 *
 * Revision 1.1.1.1  2003/05/09 14:40:28  haraldkipp
 * Initial using 3.2.1
 *
 * Revision 1.1  2003/02/04 17:49:06  harald
 * *** empty log message ***
 *
 */

#include "nut_io.h"

#include <sys/nutdebug.h>
#include <io.h>

/*!
 * \addtogroup xgCrtStdio
 */
/*@{*/

/*!
 * \brief Move read/write position of a stream.
 *
 * \param stream Pointer to a previously opened stream.
 * \param offset Number of bytes from initial position.
 * \param origin Initial position to seek from.
 *
 * \return 0 if no error occured. -1 on error. Errno is set
 *
 */
int fseek(FILE * stream, long offset, int origin)
{
    NUTASSERT(stream != NULL);
    return _seek(stream->iob_fd, offset, origin);
}

/*@}*/