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/*
* chroot() - Change Root Directory
* Author: fernando.ruiz@ctv.es
*
* 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.rtems.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems.h>
#include <unistd.h>
#include <errno.h>
#include <rtems/libio_.h>
#include <rtems/seterr.h>
int chroot(
const char *pathname
)
{
int result;
rtems_filesystem_location_info_t loc;
/* an automatic call to new private env the first time */
if (rtems_current_user_env == &rtems_global_user_env) {
rtems_libio_set_private_env(); /* try to set a new private env*/
if (rtems_current_user_env == &rtems_global_user_env) /* not ok */
rtems_set_errno_and_return_minus_one( ENOTSUP );
};
result = chdir(pathname);
if (result) {
rtems_set_errno_and_return_minus_one( errno );
};
/* clone the new root location */
if (rtems_filesystem_evaluate_path(".", 0, &loc, 0)) {
/* our cwd has changed, though - but there is no easy way of return :-( */
rtems_set_errno_and_return_minus_one( errno );
}
rtems_filesystem_freenode(&rtems_filesystem_root);
rtems_filesystem_root = loc;
return 0;
}
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