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Linux 2.6 - man page for mq_close (linux section 3)

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_over-
       view(7)

COLOPHON
       This page is part of release 3.55 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)


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