mq_close(3) - Linux man page

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).