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.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
.\" Portions extracted from linux/kernel/ioport.c (no copyright notice).
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Modified Tue Aug 1 16:47 1995 by Jochen Karrer
.\" <cip307@cip.physik.uni-wuerzburg.de>
.\" Modified Tue Oct 22 08:11:14 EDT 1996 by Eric S. Raymond <esr@thyrsus.com>
.\" Modified Fri Nov 27 14:50:36 CET 1998 by Andries Brouwer <aeb@cwi.nl>
.\"
.\" Japanese Version Copyright (c) 1997 HORIMOTO Masafumi
.\" all rights reserved.
.\" Translated Wed Sep 29 11:20:00 JST 1997
.\" by HORIMOTO Masafumi
.\" Modified Sat Apr 3 15:08:01 JST 1999
.\" by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\"
.TH IOPL 2 "24 July 1993" "Linux 0.99.11" "Linux Programmer's Manual"
.SH ̾
iopl \- I/O ø٥ѹ
.SH
.B #include <unistd.h>
/* for libc5 */
.br
.B #include <sys/io.h>
/* for glibc */
.sp
.BI "int iopl(int " level );
.SH
.B iopl
ϤΥץ I/O ø٥
.IR level
ǻꤷͤѹ롣
δؿ 8514ߴ X Ф Linux ư뤿ɬפǤ롣
ʤʤ餳 X Ф 65536 Ĥ I/O ݡƤؤΥ
Τ
.B ioperm
ؿǤԽʬǤ롣
⤤ I/O ø٥Ǥư뤳Ȥˤä
I/O ݡȥ¤뤳Ȥ˲äơץߤ
̵뤹뤳ȤǤ褦ˤʤ롣εǽϻȤƥƥ˲
餹ΤǴʤ
fork exec 硢øϷѾ롣
̾Υץ I/O ø٥ 0 Ǥ롣
.SH ֤
ˤ 0 ֤顼ξˤ \-1 ֤
.I errno
Ŭڤͤꤹ롣
.SH 顼
.TP
.B EINVAL
.I level
3 礭
.TP
.B EPERM
ߤΥ桼ѡ桼ǤϤʤ
.SH "ͥ롦"
.B iopl
0x3ff ϤĶϰϤˤ I/O ݡƤ˥˻Ѥ롣
⤷ ioperm ĥ 65536 Ĥ I/O ݡȤƤ˥Ѥ
ӥåȥޥåפȤȡץȤ 8kB ɬפȤʤ롣
ϹԤǤ롣
.SH
\fBiopl\fP Linux ͭδؿǤꡢܿտޤץ
ѤƤϤʤʤ
.SH
libc5 ǤϥƥॳȤư
.IR <unistd.h>
˥ץȥפ¸ߤƤ롣
Glibc1 ˤϥץȥפ¸ߤƤʤ
Glibc2
.I <sys/io.h>
.IR <sys/perm.h>
ξ˥ץȥפäƤ롣
Ԥ i386 ΤߤѲǽʤΤǡѤ٤ǤϤʤ
.SH Ϣ
.BR ioperm (2)
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