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.TH MQ_GETSETATTR 2 2021-03-22 "Linux" "Linux Programmer's Manual"
.SH NAME
mq_getsetattr \- get/set message queue attributes
.SH SYNOPSIS
.nf
.B #include <mqueue.h>
.PP
.BI "int mq_getsetattr(mqd_t " mqdes ", const struct mq_attr *" newattr ,
.BI "                 struct mq_attr *" oldattr );
.fi
.PP
.IR Note :
There is no glibc wrapper for this system call; see NOTES.
.SH DESCRIPTION
Do not use this system call.
.PP
This is the low-level system call used to implement
.BR mq_getattr (3)
and
.BR mq_setattr (3).
For an explanation of how this system call operates,
see the description of
.BR mq_setattr (3).
.SH CONFORMING TO
This interface is nonstandard; avoid its use.
.SH NOTES
Glibc does not provide a wrapper for this system call; call it using
.BR syscall (2).
(Actually, never call it unless you are writing a C library!)
.SH SEE ALSO
.BR mq_getattr (3),
.BR mq_overview (7)