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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;
Objects_Locations location;
status = _POSIX_Message_queue_Name_to_id( name, &the_mq_id );
if ( status != 0 )
set_errno_and_return_minus_one( status );
the_mq = _POSIX_Message_queue_Get( the_mq_id, &location );
switch ( location ) {
case OBJECTS_ERROR:
set_errno_and_return_minus_one( EINVAL );
case OBJECTS_REMOTE:
_Thread_Dispatch();
return POSIX_MP_NOT_IMPLEMENTED();
set_errno_and_return_minus_one( EINVAL );
case OBJECTS_LOCAL:
#if defined(RTEMS_MULTIPROCESSING)
_Objects_MP_Close(
&_POSIX_Message_queue_Information,
the_mq->Object.id
);
#endif
the_mq->linked = FALSE;
_POSIX_Message_queue_Delete( the_mq );
_Thread_Enable_dispatch();
return 0;
}
return POSIX_BOTTOM_REACHED();
}
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