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-.\" Copyright (c) 2005 David Xu <davidxu@FreeBSD.org>
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice(s), this list of conditions and the following disclaimer as
-.\" the first lines of this file unmodified other than the possible
-.\" addition of one or more copyright notices.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice(s), this list of conditions and the following disclaimer in
-.\" the documentation and/or other materials provided with the
-.\" distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
-.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
-.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
-.\" BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
-.\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
-.\" OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-.\" EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-.\"
-.\" Portions of this text are reprinted and reproduced in electronic form
-.\" from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology --
-.\" Portable Operating System Interface (POSIX), The Open Group Base
-.\" Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of
-.\" Electrical 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.
-.\"
-.Dd May 17, 2011
-.Dt MQ_SETATTR 2
-.Os
-.Sh NAME
-.Nm mq_setattr
-.Nd "set message queue attributes (REALTIME)"
-.Sh LIBRARY
-.Lb librt
-.Sh SYNOPSIS
-.In mqueue.h
-.Ft int
-.Fo mq_setattr
-.Fa "mqd_t mqdes"
-.Fa "const struct mq_attr *restrict mqstat"
-.Fa "struct mq_attr *restrict omqstat"
-.Fc
-.Sh DESCRIPTION
-The
-.Fn mq_setattr
-system call sets attributes associated with the open message queue description
-referenced by the message queue descriptor specified by
-.Fa mqdes .
-The message queue attributes corresponding to the following members defined
-in the
-.Vt mq_attr
-structure will be set to the specified values upon successful completion of
-.Fn mq_setattr :
-.Bl -tag -width ".Va mq_flags"
-.It Va mq_flags
-The value of this member is zero or
-.Dv O_NONBLOCK .
-.El
-.Pp
-The values of the
-.Va mq_maxmsg , mq_msgsize ,
-and
-.Va mq_curmsgs
-members of the
-.Vt mq_attr
-structure are ignored by
-.Fn mq_setattr .
-.Sh RETURN VALUES
-Upon successful completion, the function returns a value of zero and the
-attributes of the message queue will have been changed as specified.
-.Pp
-Otherwise, the message queue attributes are unchanged, and the function
-returns a value of \-1 and sets the global variable
-.Va errno
-to indicate the error.
-.Sh ERRORS
-The
-.Fn mq_setattr
-system call
-will fail if:
-.Bl -tag -width Er
-.It Bq Er EBADF
-The
-.Fa mqdes
-argument is not a valid message queue descriptor.
-.El
-.Sh SEE ALSO
-.Xr mq_open 2 ,
-.Xr mq_send 2 ,
-.Xr mq_timedsend 2
-.Sh STANDARDS
-The
-.Fn mq_setattr
-system call conforms to
-.St -p1003.1-2004 .
-.Sh HISTORY
-Support for
-.Tn POSIX
-message queues first appeared in
-.Fx 7.0 .
-.Sh COPYRIGHT
-Portions of this text are reprinted and reproduced in electronic form
-from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology --
-Portable Operating System Interface (POSIX), The Open Group Base
-Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of
-Electrical 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.