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(3C)						   Standard C Library Functions 					     mq_unlink(3C)

NAME

       mq_unlink - remove a message queue

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(3C) 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 is postponed until all references to the message queue have been closed. Calls to mq_open(3C)
       to re-create 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,  mq_unlink() returns 0; otherwise, the named message queue is not changed by this function call, the function
       returns -1 and sets errno to indicate the error.

ERRORS

       The  mq_unlink() function will fail if:

       EACCES		Permission is denied to unlink the named message queue.

       ENAMETOOLONG	The length of the name string exceeds  PATH_MAX, or a pathname component is longer than  NAME_MAX  while   _POSIX_NO_TRUNC
			is in effect.

       ENOENT		The named message queue, name, does not exist.

       ENOSYS		mq_unlink() is not supported by the system.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |ATTRIBUTE TYPE		     |ATTRIBUTE VALUE		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+
       |Standard		     |See standards(5). 	   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mqueue.h(3HEAD), mq_close(3C), mq_open(3C), attributes(5), standards(5)

NOTES

       Solaris 2.6 was the first release to support the Asynchronous Input and Output option. Prior to this release, this function always returned
       -1 and set errno to ENOSYS.

SunOS 5.11							    5 Feb 2008							     mq_unlink(3C)