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 (see (mq_notify(3)) 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 message queue descriptor specified in mqdes is invalid.

ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value
 | Thread safety | MT-Safe

CONFORMING TO
POSIX.1-2001, POSIX.1-2008.

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 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.