debian man page for mq_close

MQ_CLOSE(3)						     Linux Programmer's Manual						       MQ_CLOSE(3)

NAME
       mq_close - close a message queue descriptor

SYNOPSIS
       #include <mqueue.h>

       int mq_close(mqd_t mqdes);

       Link with -lrt.

DESCRIPTION
       mq_close() closes the message queue descriptor mqdes.

       If  the	calling  process  has  attached  a notification request to this message queue via mqdes, then this request is removed, and another
       process can now attach a notification request.

RETURN VALUE
       On success mq_close() returns 0; on error, -1 is returned, with errno set to indicate the error.

ERRORS
       EBADF  The descriptor specified in mqdes is invalid.

CONFORMING TO
       POSIX.1-2001.

NOTES
       All open message queues are automatically closed on process termination, or upon execve(2).

SEE ALSO
       mq_getattr(3), mq_notify(3), mq_open(3), mq_receive(3), mq_send(3), mq_unlink(3), mq_overview(7)

COLOPHON
       This page is part of release 3.44 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    2010-08-29							       MQ_CLOSE(3)