RTOS/rtems
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+ Modified return codes

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+ Added messsage size check
+ Debugged and yellowed out routine
This commit is contained in:
Jennifer Averett
2000-01-12 18:46:54 +00:00
parent bcbc50a81c
commit 68b0569430
2 changed files with 54 additions and 32 deletions
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43
c/src/exec/posix/src/mqueuerecvsupp.c
View File

@@ -31,10 +31,11 @@
/*PAGE
*
* _POSIX_Message_queue_Receive_support
*
* NOTE: XXX Document how size, priority, length, and the buffer go
* through the layers.
*/
/* XXX be careful ... watch the size going through all the layers ... */
ssize_t _POSIX_Message_queue_Receive_support(
mqd_t mqdes,
char *msg_ptr,
@@ -45,14 +46,12 @@ ssize_t _POSIX_Message_queue_Receive_support(
{
register POSIX_Message_queue_Control *the_mq;
Objects_Locations location;
unsigned32 status = 0;
unsigned32 length_out;
CORE_message_queue_Submit_types core_priority;
the_mq = _POSIX_Message_queue_Get( mqdes, &location );
switch ( location ) {
case OBJECTS_ERROR:
set_errno_and_return_minus_one( EINVAL );
set_errno_and_return_minus_one( EBADF );
case OBJECTS_REMOTE:
_Thread_Dispatch();
return POSIX_MP_NOT_IMPLEMENTED();
@@ -63,27 +62,39 @@ ssize_t _POSIX_Message_queue_Receive_support(
set_errno_and_return_minus_one( EBADF );
}
/* XXX need to define the options argument to this */
length_out = msg_len;
if ( msg_len < the_mq->Message_queue.maximum_message_size ) {
_Thread_Enable_dispatch();
set_errno_and_return_minus_one( EMSGSIZE );
}
/*
* Now if something goes wrong, we return a "length" of -1
* to indicate an error.
*/
length_out = -1;
_CORE_message_queue_Seize(
&the_mq->Message_queue,
mqdes,
msg_ptr,
&length_out,
the_mq->blocking,
&core_priority,
(the_mq->oflag & O_NONBLOCK) ? FALSE : TRUE,
timeout
);
*msg_prio = _POSIX_Message_queue_Priority_from_core( core_priority );
/* XXX convert message priority from core to POSIX */
_Thread_Enable_dispatch();
*msg_prio = _Thread_Executing->Wait.count;
if ( !status )
*msg_prio =
_POSIX_Message_queue_Priority_from_core(_Thread_Executing->Wait.count);
if ( !_Thread_Executing->Wait.return_code )
return length_out;
/* XXX --- the return codes gotta be looked at .. fix this */
return _Thread_Executing->Wait.return_code;
set_errno_and_return_minus_one(
_POSIX_Message_queue_Translate_core_message_queue_return_code(
_Thread_Executing->Wait.return_code
)
);
}
return POSIX_BOTTOM_REACHED();
}

43
cpukit/posix/src/mqueuerecvsupp.c
View File

@@ -31,10 +31,11 @@
/*PAGE
*
* _POSIX_Message_queue_Receive_support
*
* NOTE: XXX Document how size, priority, length, and the buffer go
* through the layers.
*/
/* XXX be careful ... watch the size going through all the layers ... */
ssize_t _POSIX_Message_queue_Receive_support(
mqd_t mqdes,
char *msg_ptr,
@@ -45,14 +46,12 @@ ssize_t _POSIX_Message_queue_Receive_support(
{
register POSIX_Message_queue_Control *the_mq;
Objects_Locations location;
unsigned32 status = 0;
unsigned32 length_out;
CORE_message_queue_Submit_types core_priority;
the_mq = _POSIX_Message_queue_Get( mqdes, &location );
switch ( location ) {
case OBJECTS_ERROR:
set_errno_and_return_minus_one( EINVAL );
set_errno_and_return_minus_one( EBADF );
case OBJECTS_REMOTE:
_Thread_Dispatch();
return POSIX_MP_NOT_IMPLEMENTED();
@@ -63,27 +62,39 @@ ssize_t _POSIX_Message_queue_Receive_support(
set_errno_and_return_minus_one( EBADF );
}
/* XXX need to define the options argument to this */
length_out = msg_len;
if ( msg_len < the_mq->Message_queue.maximum_message_size ) {
_Thread_Enable_dispatch();
set_errno_and_return_minus_one( EMSGSIZE );
}
/*
* Now if something goes wrong, we return a "length" of -1
* to indicate an error.
*/
length_out = -1;
_CORE_message_queue_Seize(
&the_mq->Message_queue,
mqdes,
msg_ptr,
&length_out,
the_mq->blocking,
&core_priority,
(the_mq->oflag & O_NONBLOCK) ? FALSE : TRUE,
timeout
);
*msg_prio = _POSIX_Message_queue_Priority_from_core( core_priority );
/* XXX convert message priority from core to POSIX */
_Thread_Enable_dispatch();
*msg_prio = _Thread_Executing->Wait.count;
if ( !status )
*msg_prio =
_POSIX_Message_queue_Priority_from_core(_Thread_Executing->Wait.count);
if ( !_Thread_Executing->Wait.return_code )
return length_out;
/* XXX --- the return codes gotta be looked at .. fix this */
return _Thread_Executing->Wait.return_code;
set_errno_and_return_minus_one(
_POSIX_Message_queue_Translate_core_message_queue_return_code(
_Thread_Executing->Wait.return_code
)
);
}
return POSIX_BOTTOM_REACHED();
}