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/*
* 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
#include <stdarg.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <semaphore.h>
#include <limits.h>
#include <rtems/system.h>
#include <rtems/score/object.h>
#include <rtems/posix/semaphore.h>
#include <rtems/posix/time.h>
#include <rtems/seterr.h>
/*
* sem_unlink
*
* Unlinks a named semaphore, sem_close must also be called to remove
* the semaphore.
*
* 11.2.5 Remove a Named Semaphore, P1003.1b-1993, p.225
*/
int sem_unlink(
const char *name
)
{
int status;
register POSIX_Semaphore_Control *the_semaphore;
Objects_Id the_semaphore_id;
size_t name_len;
_Thread_Disable_dispatch();
status = _POSIX_Semaphore_Name_to_id( name, &the_semaphore_id, &name_len );
if ( status != 0 ) {
_Thread_Enable_dispatch();
rtems_set_errno_and_return_minus_one( status );
}
the_semaphore = (POSIX_Semaphore_Control *) _Objects_Get_local_object(
&_POSIX_Semaphore_Information,
_Objects_Get_index( the_semaphore_id )
);
the_semaphore->linked = false;
_POSIX_Semaphore_Namespace_remove( the_semaphore );
_POSIX_Semaphore_Delete( the_semaphore );
_Thread_Enable_dispatch();
return 0;
}
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