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mq_getsetattr.2: Use syscall(SYS_...); for system calls without a wrapper 

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Alejandro Colomar 2021-05-10 19:55:33 +02:00 committed by Michael Kerrisk
parent 57d2facb78
commit a39bcd0b85
1 changed files with 6 additions and 9 deletions
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15
man2/mq_getsetattr.2
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@ -27,14 +27,13 @@
mq_getsetattr \- get/set message queue attributes
.SH SYNOPSIS
.nf
.B #include <mqueue.h>
.BR "#include <mqueue.h>" " /* Definition of " "struct mq_attr" " */"
.BR "#include <sys/syscall.h>" " /* Definition of " SYS_* " constants */"
.B #include <unistd.h>
.PP
.BI "int mq_getsetattr(mqd_t " mqdes ", const struct mq_attr *" newattr ,
.BI " struct mq_attr *" oldattr );
.BI "int syscall(SYS_mq_getsetattr, mqd_t " mqdes ,
.BI " const struct mq_attr *" newattr ", 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
@ -48,9 +47,7 @@ see the description of
.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!)
Never call it unless you are writing a C library!
.SH SEE ALSO
.BR mq_getattr (3),
.BR mq_overview (7)