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+'\" et
+.TH MQ_GETATTR "3P" 2017 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\"
+.SH PROLOG
+This manual page is part of the POSIX Programmer's Manual.
+The Linux implementation of this interface may differ (consult
+the corresponding Linux manual page for details of Linux behavior),
+or the interface may not be implemented on Linux.
+.\"
+.SH NAME
+mq_getattr
+\(em get message queue attributes
+(\fBREALTIME\fP)
+.SH SYNOPSIS
+.LP
+.nf
+#include <mqueue.h>
+.P
+int mq_getattr(mqd_t \fImqdes\fP, struct mq_attr *\fImqstat\fP);
+.fi
+.SH DESCRIPTION
+The
+\fImq_getattr\fR()
+function shall obtain status information and attributes of the message
+queue and the open message queue description associated with the
+message queue descriptor.
+.P
+The
+.IR mqdes
+argument specifies a message queue descriptor.
+.P
+The results shall be returned in the
+.BR mq_attr
+structure referenced by the
+.IR mqstat
+argument.
+.P
+Upon return, the following members shall have the values associated
+with the open message queue description as set when the message queue
+was opened and as modified by subsequent
+\fImq_setattr\fR()
+calls:
+.IR mq_flags .
+.P
+The following attributes of the message queue shall be returned as set
+at message queue creation:
+.IR mq_maxmsg ,
+.IR mq_msgsize .
+.P
+Upon return, the following members within the
+.BR mq_attr
+structure referenced by the
+.IR mqstat
+argument shall be set to the current state of the message queue:
+.IP "\fImq_curmsgs\fP" 10
+The number of messages currently on the queue.
+.SH "RETURN VALUE"
+Upon successful completion, the
+\fImq_getattr\fR()
+function shall return zero. Otherwise, the function shall return
+\-1 and set
+.IR errno
+to indicate the error.
+.SH ERRORS
+The
+\fImq_getattr\fR()
+function may fail if:
+.TP
+.BR EBADF
+The
+.IR mqdes
+argument is not a valid message queue descriptor.
+.LP
+.IR "The following sections are informative."
+.SH EXAMPLES
+See
+.IR "\fImq_notify\fR\^(\|)".
+.SH "APPLICATION USAGE"
+None.
+.SH RATIONALE
+None.
+.SH "FUTURE DIRECTIONS"
+None.
+.SH "SEE ALSO"
+.IR "\fImq_notify\fR\^(\|)",
+.IR "\fImq_open\fR\^(\|)",
+.IR "\fImq_send\fR\^(\|)",
+.IR "\fImq_setattr\fR\^(\|)",
+.IR "\fImsgctl\fR\^(\|)",
+.IR "\fImsgget\fR\^(\|)",
+.IR "\fImsgrcv\fR\^(\|)",
+.IR "\fImsgsnd\fR\^(\|)"
+.P
+The Base Definitions volume of POSIX.1\(hy2017,
+.IR "\fB<mqueue.h>\fP"
+.\"
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1-2017, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 7, 2018 Edition,
+Copyright (C) 2018 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 .
+.PP
+Any typographical or formatting errors that appear
+in this page are most likely
+to have been introduced during the conversion of the source files to
+man page format. To report such errors, see
+https://www.kernel.org/doc/man-pages/reporting_bugs.html .