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/*
* chdir() - POSIX 1003.1b - 5.2.1 - Change Current Working Directory
*
* 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.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems.h>
#include <unistd.h>
#include <errno.h>
#include <rtems/libio_.h>
int chdir(
const char *pathname
)
{
rtems_filesystem_location_info_t loc;
int result;
/*
* Get the node where we wish to go.
*/
result = rtems_filesystem_evaluate_path(
pathname, RTEMS_LIBIO_PERMS_SEARCH, &loc, TRUE );
if ( result != 0 )
return -1;
/*
* Verify you can change directory into this node.
*/
if ( !loc.ops->node_type_h ) {
rtems_filesystem_freenode( &loc );
set_errno_and_return_minus_one( ENOTSUP );
}
if ( (*loc.ops->node_type_h)( &loc ) != RTEMS_FILESYSTEM_DIRECTORY ) {
rtems_filesystem_freenode( &loc );
set_errno_and_return_minus_one( ENOTDIR );
}
rtems_filesystem_freenode( &rtems_filesystem_current );
rtems_filesystem_current = loc;
return 0;
}
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