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    Command:

    mq_close

    
    
    
    

    SYNOPSIS

         #include <mqueue.h>
    
         int
         mq_close(mqd_t mqdes);
    
    
    

    DESCRIPTION

         The mq_close() system call removes the association between the message
         queue descriptor, mqdes, and its message queue.  The results of using
         this message queue descriptor after successful return from this
         mq_close(), and until the return of this message queue descriptor from a
         subsequent mq_open(), are undefined.
    
         If the process has successfully attached a notification request to the
         message queue via this mqdes, this attachment will be removed, and the
         message queue is available for another process to attach for notifica-
         tion.
    
    
    

    RETURN VALUES

         Upon successful completion, the value 0 is returned; otherwise the
         value -1 is returned and the global variable errno is set to indicate the
         error.
    
    
    

    ERRORS

         The mq_close() system call will fail if:
    
         [EBADF]            The mqdes argument is not a valid message queue
                            descriptor.
    
    
    

    SEE ALSO

         mq_open(2), mq_unlink(2)
    
    
    

    STANDARDS

         The mq_close() system call conforms to .
    
    
    

    HISTORY

         Support for POSIX message queues first appeared in FreeBSD 7.0.
    
    
    

    COPYRIGHT

         Portions of this text are reprinted and reproduced in electronic form
         from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology
         -- Portable Operating System Interface (POSIX), The Open Group Base Spec-
         ifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electri-
         cal and Electronics Engineers, Inc and The Open Group.  In the event of
         any discrepancy between this version and the original IEEE and The Open
         Group Standard, the original IEEE and The Open Group Standard is the ref-
         eree document.  The original Standard can be obtained online at
              http://www.opengroup.org/unix/online.html.
    
    
    

    BSD November 29, 2005 BSD

    
    
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