POSIX message queue support in Linux kernel?

Hi, Does the Linux kernel support POSIX message queues as defined by the Single Unix Specification, v2, ie. http://www.opengroup.org/onlinepubs/007908799/xsh/mqueue.h.html stuff like mq_open(), mq_send(), mq_close(), etc. I've tried grepping the sources for 2.4.0, and could not find anything.

POSIX message queue support in Linux kernel?

Hi, Does the Linux kernel support POSIX message queues as defined by the Single Unix Specification, v2, ie. http://www.opengroup.org/onlinepubs/007908799/xsh/mqueue.h.html stuff like mq_open(), mq_send(), mq_close(), etc. I've tried grepping the sources for 2.4.0, and could not find anything.