Date: Tue, 16 Sep 2014 11:32:47 +0800 From: Erich Dollansky <erichsfreebsdlist@alogt.com> To: freebsd-stable <freebsd-stable@freebsd.org> Subject: mq_open fails when message queue attributes are set Message-ID: <20140916113247.7158a96d@X220.alogt.com>
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Hi,
I try to use message queues but do not have much luck yet.
I initialised Attributes like this:
char Message [1024];
memset (&Attributes, 0, sizeof (Attributes));
Attributes.mq_maxmsg = 1024;
Attributes.mq_msgsize = sizeof (Message);
The following code fails:
Queue = mq_open ("/testqueue", O_RDWR | O_CREAT | O_EXCL, 644,
&Attributes);
errno is set to 22 (Invalid argument).
When I replace &Attributes with NULL, it will work.
The size of Message does not matter.
My old error not having the message queues in the kernel is corrected.
What do I miss?
Erich
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