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NAME

       mq_close - close a message queue descriptor

SYNOPSIS

       #include <mqueue.h>

       mqd_t 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

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