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/*
* _rename_r() - POSIX 1003.1b - 5.3.4 - Rename a file
*
* COPYRIGHT (c) 1989-2007.
* 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
#if defined(RTEMS_NEWLIB) && !defined(HAVE__RENAME_R)
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <rtems/libio_.h>
#include <rtems/seterr.h>
int _rename_r(
struct _reent *ptr __attribute__((unused)),
const char *old,
const char *new
)
{
int old_parent_pathlen;
rtems_filesystem_location_info_t old_loc;
rtems_filesystem_location_info_t old_parent_loc;
rtems_filesystem_location_info_t new_parent_loc;
int i;
int result;
const char *name;
bool free_old_parentloc = false;
/*
* Get the parent node of the old path to be renamed. Find the parent path.
*/
old_parent_pathlen = rtems_filesystem_dirname ( old );
if ( old_parent_pathlen == 0 )
rtems_filesystem_get_start_loc( old, &i, &old_parent_loc );
else {
result = rtems_filesystem_evaluate_path( old, old_parent_pathlen,
RTEMS_LIBIO_PERMS_WRITE,
&old_parent_loc,
false );
if ( result != 0 )
return -1;
free_old_parentloc = true;
}
/*
* Start from the parent to find the node that should be under it.
*/
old_loc = old_parent_loc;
name = old + old_parent_pathlen;
name += rtems_filesystem_prefix_separators( name, strlen( name ) );
result = rtems_filesystem_evaluate_relative_path( name , strlen( name ),
0, &old_loc, false );
if ( result != 0 ) {
if ( free_old_parentloc )
rtems_filesystem_freenode( &old_parent_loc );
rtems_set_errno_and_return_minus_one( result );
}
/*
* Get the parent of the new node we are renaming to.
*/
rtems_filesystem_get_start_loc( new, &i, &new_parent_loc );
if ( !new_parent_loc.ops->evalformake_h ) {
if ( free_old_parentloc )
rtems_filesystem_freenode( &old_parent_loc );
rtems_filesystem_freenode( &old_loc );
rtems_set_errno_and_return_minus_one( ENOTSUP );
}
result = (*new_parent_loc.ops->evalformake_h)( &new[i], &new_parent_loc, &name );
if ( result != 0 ) {
rtems_filesystem_freenode( &new_parent_loc );
if ( free_old_parentloc )
rtems_filesystem_freenode( &old_parent_loc );
rtems_filesystem_freenode( &old_loc );
rtems_set_errno_and_return_minus_one( result );
}
/*
* Check to see if the caller is trying to rename across file system
* boundaries.
*/
if ( old_parent_loc.mt_entry != new_parent_loc.mt_entry ) {
rtems_filesystem_freenode( &new_parent_loc );
if ( free_old_parentloc )
rtems_filesystem_freenode( &old_parent_loc );
rtems_filesystem_freenode( &old_loc );
rtems_set_errno_and_return_minus_one( EXDEV );
}
if ( !new_parent_loc.ops->rename_h ) {
rtems_filesystem_freenode( &new_parent_loc );
if ( free_old_parentloc )
rtems_filesystem_freenode( &old_parent_loc );
rtems_filesystem_freenode( &old_loc );
rtems_set_errno_and_return_minus_one( ENOTSUP );
}
result = (*new_parent_loc.ops->rename_h)( &old_parent_loc, &old_loc, &new_parent_loc, name );
rtems_filesystem_freenode( &new_parent_loc );
if ( free_old_parentloc )
rtems_filesystem_freenode( &old_parent_loc );
rtems_filesystem_freenode( &old_loc );
return result;
}
#if 0
struct stat sb;
int s;
s = stat( old, &sb);
if ( s < 0 )
return s;
s = link( old, new );
if ( s < 0 )
return s;
return S_ISDIR(sb.st_mode) ? rmdir( old ) : unlink( old );
#endif
#endif
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