mq_unlink(3) [minix man page]

MQ_UNLINK(3)						     Linux Programmer's Manual						      MQ_UNLINK(3)

NAME

       mq_unlink - remove a message queue

SYNOPSIS

       #include <mqueue.h>

       int mq_unlink(const char *name);

       Link with -lrt.

DESCRIPTION

       mq_unlink()  removes  the specified message queue name.	The message queue name is removed immediately.	The queue itself is destroyed once
       any other processes that have the queue open close their descriptors referring to the queue.

RETURN VALUE

       On success mq_unlink() returns 0; on error, -1 is returned, with errno set to indicate the error.

ERRORS

       EACCES The caller does not have permission to unlink this message queue.

       ENAMETOOLONG
	      name was too long.

       ENOENT There is no message queue with the given name.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       +------------+---------------+---------+
       |Interface   | Attribute     | Value   |
       +------------+---------------+---------+
       |mq_unlink() | Thread safety | MT-Safe |
       +------------+---------------+---------+
CONFORMING TO

       POSIX.1-2001, POSIX.1-2008.

SEE ALSO

       mq_close(3), mq_getattr(3), mq_notify(3), mq_open(3), mq_receive(3), mq_send(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/.

Linux								    2015-08-08							      MQ_UNLINK(3)

MQ_UNLINK(3)						   BSD Library Functions Manual 					      MQ_UNLINK(3)

NAME

     mq_unlink -- remove a message queue (REALTIME)

LIBRARY

     POSIX Real-time Library (librt, -lrt)

SYNOPSIS

     #include <mqueue.h>

     int
     mq_unlink(const char *name);

DESCRIPTION

     The mq_unlink() function removes the message queue named by the pathname name.  After a successful call to mq_unlink() with name, a call to
     mq_open(3) with name fails if the flag O_CREAT is not set in flags.  If one or more processes have the message queue open when mq_unlink() is
     called, destruction of the message queue will be postponed until all references to the message queue have been closed.

     Calls to mq_open(3) to recreate the message queue may fail until the message queue is actually removed.  However, the mq_unlink() call need
     not block until all references have been closed; it may return immediately.

RETURN VALUES

     Upon successful completion, the function returns a value of zero.	Otherwise, the named message queue will be unchanged by this function
     call, and the function returns a value of -1 and sets the global variable errno to indicate the error.

ERRORS

     The mq_unlink() function fails if:

     [EACCES]		Permission is denied to unlink the named message queue.

     [ENAMETOOLONG]	The length of the name argument exceeds {PATH_MAX} or a pathname component is longer than {NAME_MAX}.

     [ENOENT]		The named message queue does not exist.

SEE ALSO

     mq(3), mq_open(3)

STANDARDS

     This function conforms to the IEEE Std 1003.1-2001 (``POSIX.1'') standard.

HISTORY

     The mq_unlink() function first appeared in NetBSD 5.0.

COPYRIGHT

     Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
     -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Elec-
     trical 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 referee document.  The original Standard can be obtained online at
     http://www.opengroup.org/unix/online.html .

BSD
								   June 7, 2009 							       BSD