ioctl.c

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/*
 * Copyright (C) 2001-2003 by egnite Software GmbH. All rights reserved.
 *
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 * modification, are permitted provided that the following conditions
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 *    from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
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/*
 * $Log$
 * Revision 1.5  2009/01/17 15:37:52  haraldkipp
 * Added some NUTASSERT macros to check function parameters.
 *
 * Revision 1.4  2009/01/17 11:26:38  haraldkipp
 * Getting rid of two remaining BSD types in favor of stdint.
 * Replaced 'u_int' by 'unsinged int' and 'uptr_t' by 'uintptr_t'.
 *
 * Revision 1.3  2004/03/16 16:48:27  haraldkipp
 * Added Jan Dubiec's H8/300 port.
 *
 * Revision 1.2  2003/12/15 19:23:09  haraldkipp
 * We need more dox on this
 *
 * Revision 1.1.1.1  2003/05/09 14:40:30  haraldkipp
 * Initial using 3.2.1
 *
 * Revision 1.1  2003/02/04 17:49:07  harald
 * *** empty log message ***
 *
 */

#include "nut_io.h"

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


int _ioctl(int fd, int cmd, void *data)
{
    NUTFILE *fp = (NUTFILE *) ((uintptr_t) fd);
    NUTDEVICE *dev;

    NUTASSERT(fp != NULL);
    dev = fp->nf_dev;
    if (dev == 0) {
        NUTVIRTUALDEVICE *vdv = (NUTVIRTUALDEVICE *) fp;
        return (*vdv->vdv_ioctl) (vdv, cmd, data);
    }
    return (*dev->dev_ioctl) (dev, cmd, data);
}