Problem using POSIX message queues

Kostik Belousov kostikbel at
Mon Mar 28 20:34:07 UTC 2011

On Mon, Mar 28, 2011 at 01:19:38PM -0400, Derek Tattersall wrote:
> While trying to develop an understanding of the use POSIX message
> queues, I found that issuing a mq_open (2) call, resulted in Bad system
> call: 12 error message. I have tried to run the tools/regression/mqueue
> tests, but they fail in mq_open with the bad system call error. In
> addition, the mq_open (2) man page refers to mq_timedreceive (3),
> mq_timedsend(3) which exist as section 2 man pages and a mq_unlink(3)
> man page which I can't find at all.
Try "kldload mqueuefs" before the tests.
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