/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup POSIXAPI
*
* @brief POSIX Message Queue and Send Support
*/
/*
* 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.
*
* COPYRIGHT (c) 1989-2008.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/posix/mqueueimpl.h>
#include <fcntl.h>
int _POSIX_Message_queue_Send_support(
mqd_t mqdes,
const char *msg_ptr,
size_t msg_len,
unsigned int msg_prio,
const struct timespec *abstime,
Thread_queue_Enqueue_callout enqueue_callout
)
{
POSIX_Message_queue_Control *the_mq;
Thread_queue_Context queue_context;
Status_Control status;
Thread_Control *executing;
/*
* Validate the priority.
* XXX - Do not validate msg_prio is not less than 0.
*/
if ( msg_prio > MQ_PRIO_MAX ) {
rtems_set_errno_and_return_minus_one( EINVAL );
}
the_mq = _POSIX_Message_queue_Get( mqdes, &queue_context );
if ( the_mq == NULL ) {
rtems_set_errno_and_return_minus_one( EBADF );
}
if ( ( the_mq->oflag & O_ACCMODE ) == O_RDONLY ) {
_ISR_lock_ISR_enable( &queue_context.Lock_context.Lock_context );
rtems_set_errno_and_return_minus_one( EBADF );
}
_Thread_queue_Context_set_enqueue_callout( &queue_context, enqueue_callout );
_Thread_queue_Context_set_timeout_argument( &queue_context, abstime, true );
_CORE_message_queue_Acquire_critical(
&the_mq->Message_queue,
&queue_context
);
if ( the_mq->open_count == 0 ) {
_CORE_message_queue_Release( &the_mq->Message_queue, &queue_context );
rtems_set_errno_and_return_minus_one( EBADF );
}
/*
* Now perform the actual message receive
*/
executing = _Thread_Executing;
status = _CORE_message_queue_Submit(
&the_mq->Message_queue,
executing,
msg_ptr,
msg_len,
_POSIX_Message_queue_Priority_to_core( msg_prio ),
( the_mq->oflag & O_NONBLOCK ) == 0,
&queue_context
);
return _POSIX_Zero_or_minus_one_plus_errno( status );
}
