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/*

 *  getdents() - Get Directory Entries

 *

 *  SVR4 and SVID extension required by Newlib readdir() family.

 *

 *  This routine will dd_len / (sizeof dirent) directory entries relative to

 *  the current directory position index. These entries will be placed in

 *  character array pointed to by -dd_buf-

 *

 *  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.

 *

 *  getdents.c,v 1.7 2002/01/04 18:29:36 joel Exp

 */

#if HAVE_CONFIG_H

#include "config.h"

#endif

#include <errno.h>

#include <rtems/libio_.h>

#include <rtems/seterr.h>

int getdents(

  int   dd_fd,

  char *dd_buf,

  int   dd_len

)

{

  rtems_libio_t                    *iop;

  rtems_filesystem_location_info_t  loc;

  /*

   *  Get the file control block structure associated with the file descriptor

   */

  iop = rtems_libio_iop( dd_fd );

  /*

   *  Make sure we are working on a directory

   */

  loc = iop->pathinfo;

  if ( !loc.ops->node_type_h )

    rtems_set_errno_and_return_minus_one( ENOTSUP );

  if ( (*loc.ops->node_type_h)( &loc ) != RTEMS_FILESYSTEM_DIRECTORY )

    rtems_set_errno_and_return_minus_one( ENOTDIR );

  /*

   *  Return the number of bytes that were actually transfered as a result

   *  of the read attempt.

   */

  if ( !iop->handlers->read_h )

    rtems_set_errno_and_return_minus_one( ENOTSUP );

  return (*iop->handlers->read_h)( iop, dd_buf, dd_len  );

}