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/*
* NOTE: The structure of the routines is identical to that of POSIX
* Message_queues to leave the option of having unnamed message
* queues at a future date. They are currently not part of the
* POSIX standard but unnamed message_queues are. This is also
* the reason for the apparently unnecessary tracking of
* the process_shared attribute. [In addition to the fact that
* it would be trivial to add pshared to the mq_attr structure
* and have process private message queues.]
*
* This code ignores the O_RDONLY/O_WRONLY/O_RDWR flag at open
* time.
*
* $Id$
*/
#include <stdarg.h>
#include <pthread.h>
#include <limits.h>
#include <errno.h>
#include <fcntl.h>
#include <mqueue.h>
#include <rtems/system.h>
#include <rtems/score/watchdog.h>
#include <rtems/posix/seterr.h>
#include <rtems/posix/mqueue.h>
#include <rtems/posix/time.h>
/*PAGE
*
* 15.2.2 Remove a Message Queue, P1003.1b-1993, p. 276
*/
int mq_unlink(
const char *name
)
{
int status;
register POSIX_Message_queue_Control *the_mq;
Objects_Id the_mq_id;
_Thread_Disable_dispatch();
status = _POSIX_Message_queue_Name_to_id( name, &the_mq_id );
if ( status != 0 ) {
_Thread_Enable_dispatch();
set_errno_and_return_minus_one( status );
}
/*
* Don't support unlinking a remote message queue.
*/
if ( !_Objects_Is_local_id(the_mq_id) ) {
_Thread_Enable_dispatch();
set_errno_and_return_minus_one( ENOSYS );
}
the_mq = (POSIX_Message_queue_Control *) _Objects_Get_local_object(
&_POSIX_Message_queue_Information,
_Objects_Get_index( the_mq_id )
);
#if 0 && defined(RTEMS_MULTIPROCESSING)
if ( the_mq->process_shared == PTHREAD_PROCESS_SHARED ) {
_Objects_MP_Close( &_POSIX_Message_queue_Information, the_mq_id );
}
#endif
the_mq->linked = FALSE;
_POSIX_Message_queue_Namespace_remove( the_mq );
_POSIX_Message_queue_Delete( the_mq );
_Thread_Enable_dispatch();
return 0;
}
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