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

In this case there's a wrapper provided by libaio,
but this page documents the raw syscall.

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 19:55:14 +02:00 committed by Michael Kerrisk
parent cac89bc794
commit 950d1738ef
1 changed files with 9 additions and 7 deletions
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16
man2/io_destroy.2
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@ -9,13 +9,18 @@
io_destroy \- destroy an asynchronous I/O context
.SH SYNOPSIS
.nf
.BR "#include <linux/aio_abi.h>" " /* Defines needed types */"
.BR "#include <linux/aio_abi.h>" " /* Definition of " aio_context_t " */"
.BR "#include <sys/syscall.h>" " /* Definition of " SYS_* " constants */"
.B #include <unistd.h>
.PP
.BI "int io_destroy(aio_context_t " ctx_id );
.BI "int syscall(SYS_io_destroy, aio_context_t " ctx_id );
.fi
.PP
.IR Note :
There is no glibc wrapper for this system call; see NOTES.
glibc provides no wrapper for
.BR io_destroy (),
necessitating the use of
.BR syscall (2).
.SH DESCRIPTION
.IR Note :
this page describes the raw Linux system call interface.
@ -57,10 +62,7 @@ The asynchronous I/O system calls first appeared in Linux 2.5.
is Linux-specific and should not be used in programs
that are intended to be portable.
.SH NOTES
Glibc does not provide a wrapper for this system call.
You could invoke it using
.BR syscall (2).
But instead, you probably want to use the
You probably want to use the
.BR io_destroy ()
wrapper function provided by
.\" http://git.fedorahosted.org/git/?p=libaio.git