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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) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* 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.
*
* $Id$
*/
#include <errno.h>
#include "libio_.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 )
set_errno_and_return_minus_one( ENOTSUP );
if ( (*loc.ops->node_type)( &loc ) != RTEMS_FILESYSTEM_DIRECTORY )
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 )
set_errno_and_return_minus_one( ENOTSUP );
return (*iop->handlers->read)( iop, dd_buf, dd_len );
}
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