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/**
* @file
*
* @brief Set Message Queue Attributes
* @ingroup POSIX_MQUEUE
*/
/*
* 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.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#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/seterr.h>
#include <rtems/posix/mqueueimpl.h>
#include <rtems/posix/time.h>
int mq_setattr(
mqd_t mqdes,
const struct mq_attr *__restrict mqstat,
struct mq_attr *__restrict omqstat
)
{
POSIX_Message_queue_Control_fd *the_mq_fd;
CORE_message_queue_Control *the_core_mq;
Objects_Locations location;
if ( !mqstat )
rtems_set_errno_and_return_minus_one( EINVAL );
the_mq_fd = _POSIX_Message_queue_Get_fd( mqdes, &location );
switch ( location ) {
case OBJECTS_LOCAL:
the_core_mq = &the_mq_fd->Queue->Message_queue;
/*
* Return the old values.
*/
if ( omqstat ) {
omqstat->mq_flags = the_mq_fd->oflag;
omqstat->mq_msgsize = the_core_mq->maximum_message_size;
omqstat->mq_maxmsg = the_core_mq->maximum_pending_messages;
omqstat->mq_curmsgs = the_core_mq->number_of_pending_messages;
}
the_mq_fd->oflag = mqstat->mq_flags;
_Objects_Put( &the_mq_fd->Object );
return 0;
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE:
#endif
case OBJECTS_ERROR:
break;
}
rtems_set_errno_and_return_minus_one( EBADF );
}
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