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/*
* unlink() - POSIX 1003.1b - 5.5.1 - Remove an existing link
*
* 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.
*
* $Id$
*/
#include <errno.h>
#include "libio_.h"
int unlink(
const char *path
)
{
rtems_filesystem_location_info_t loc;
int result;
/*
* Get the node to be unlinked.
*/
result = rtems_filesystem_evaluate_path( path, 0, &loc, FALSE );
if ( result != 0 )
return -1;
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( EISDIR );
}
if ( !loc.ops->unlink_h ) {
rtems_filesystem_freenode( &loc );
set_errno_and_return_minus_one( ENOTSUP );
}
result = (*loc.ops->unlink_h)( &loc );
rtems_filesystem_freenode( &loc );
return result;
}
/*
* _unlink_r
*
* This is the Newlib dependent reentrant version of unlink().
*/
#if defined(RTEMS_NEWLIB)
#include <reent.h>
int _unlink_r(
struct _reent *ptr,
const char *path
)
{
return unlink( path );
}
#endif
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