mirror of https://github.com/mkerrisk/man-pages
54 lines
2.0 KiB
Groff
54 lines
2.0 KiB
Groff
.\" Copyright (C) 2006 Michael Kerrisk <mtk.manpages@gmail.com>
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.\"
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.\" %%%LICENSE_START(VERBATIM)
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\" %%%LICENSE_END
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.\"
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.TH MQ_GETSETATTR 2 2021-03-22 "Linux" "Linux Programmer's Manual"
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.SH NAME
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mq_getsetattr \- get/set message queue attributes
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.SH SYNOPSIS
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.nf
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.BR "#include <mqueue.h>" " /* Definition of " "struct mq_attr" " */"
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.BR "#include <sys/syscall.h>" " /* Definition of " SYS_* " constants */"
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.B #include <unistd.h>
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.PP
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.BI "int syscall(SYS_mq_getsetattr, mqd_t " mqdes ,
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.BI " const struct mq_attr *" newattr ", struct mq_attr *" oldattr );
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.fi
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.SH DESCRIPTION
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Do not use this system call.
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.PP
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This is the low-level system call used to implement
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.BR mq_getattr (3)
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and
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.BR mq_setattr (3).
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For an explanation of how this system call operates,
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see the description of
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.BR mq_setattr (3).
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.SH CONFORMING TO
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This interface is nonstandard; avoid its use.
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.SH NOTES
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Never call it unless you are writing a C library!
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.SH SEE ALSO
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.BR mq_getattr (3),
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.BR mq_overview (7)
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