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/*

 *  ioctl() system call

 *

 *  This routine is not defined in the POSIX 1003.1b standard but is

 *  commonly supported on most UNIX and POSIX systems.

 *

 *  COPYRIGHT (c) 1989-1999.

 *  On-Line Applications Research Corporation (OAR).

 *

 *  The license and distribution terms for this file may be

 *  found in the file LICENSE in this distribution or at

 *  http://www.OARcorp.com/rtems/license.html.

 *

 *  ioctl.c,v 1.11 2002/01/04 18:29:36 joel Exp

 */

#if HAVE_CONFIG_H

#include "config.h"

#endif

#include <stdarg.h>

#include <rtems/libio_.h>

#include <rtems/seterr.h>

#include <unistd.h>

int ioctl(

  int  fd,

  int  command,

  ...

)

{

  va_list            ap;

  rtems_status_code  rc;

  rtems_libio_t     *iop;

  void              *buffer;

  rtems_libio_check_fd( fd );

  iop = rtems_libio_iop( fd );

  rtems_libio_check_is_open(iop);

  va_start(ap, command);

  buffer = va_arg(ap, void *);

  /*

   *  Now process the ioctl().

   */

  if ( !iop->handlers )

    rtems_set_errno_and_return_minus_one( EBADF );

  if ( !iop->handlers->ioctl_h )

    rtems_set_errno_and_return_minus_one( ENOTSUP );

  rc = (*iop->handlers->ioctl_h)( iop, command, buffer );

  return rc;

}