1 .\" Hey Emacs! This file is -*- nroff -*- source.
3 .\" Copyright (c) 1993 Michael Haardt
5 .\" Fri Apr 2 11:32:09 MET DST 1993
7 .\" This is free documentation; you can redistribute it and/or
8 .\" modify it under the terms of the GNU General Public License as
9 .\" published by the Free Software Foundation; either version 2 of
10 .\" the License, or (at your option) any later version.
12 .\" The GNU General Public License's references to "object code"
13 .\" and "executables" are to be interpreted as the output of any
14 .\" document formatting or typesetting system, including
15 .\" intermediate and printed output.
17 .\" This manual is distributed in the hope that it will be useful,
18 .\" but WITHOUT ANY WARRANTY; without even the implied warranty of
19 .\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 .\" GNU General Public License for more details.
22 .\" You should have received a copy of the GNU General Public
23 .\" License along with this manual; if not, write to the Free
24 .\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
27 .\" Modified Sat Jul 24 15:12:05 1993 by Rik Faith <faith@cs.unc.edu>
28 .\" Modified Tue Aug 1 16:27 1995 by Jochen Karrer
29 .\" <cip307@cip.physik.uni-wuerzburg.de>
30 .\" Modified Tue Oct 22 08:11:14 EDT 1996 by Eric S. Raymond <esr@thyrsus.com>
31 .\" Modified Mon Feb 15 17:28:41 CET 1999 by Andries E. Brouwer <aeb@cwi.nl>
32 .\" Modified, 27 May 2004, Michael Kerrisk <mtk.manpages@gmail.com>
33 .\" Added notes on capability requirements
35 .\" Japanese Version Copyright (c) 1997 HORIMOTO Masafumi
36 .\" all rights reserved.
37 .\" Translated 1997-09-11, HORIMOTO Masafumi
38 .\" Modified 1999-04-03, HANATAKA Shinya <hanataka@abyss.rim.or.jp>
39 .\" Updated 2003-10-12, Kentaro Shirakata <argrath@ub32.org>
40 .\" Updated 2005-02-24, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
41 .\" Updated 2007-01-07, Akihiro MOTOKI, catch up to LDP v2.43
43 .TH IOPERM 2 2007-06-15 "Linux" "Linux Programmer's Manual"
46 .\"O ioperm \- set port input/output permissions
47 ioperm \- ポートの入出力許可を設定する
50 .B #include <unistd.h>
53 .B #include <sys/io.h>
56 .BI "int ioperm(unsigned long " from ", unsigned long " num ", int " turn_on );
60 .\"O sets the port access permission bits for the calling process for
61 .\"O \fInum\fP bytes starting from port address \fIfrom\fP to the value
63 .\"O If \fIturn_on\fP is nonzero, the calling process must be privileged
64 .\"O .RB ( CAP_SYS_RAWIO ).
66 は、引き数 \fIfrom\fP の I/O ポートアドレスから
67 \fInum\fP バイト分の領域に対する、呼び出し元プロセスの
68 アクセス許可ビットを、\fIturn_on\fP に設定する。
69 \fIturn_on\fP が 0 以外の場合、呼び出し元プロセスは特権
73 .\" FIXME is the following ("Only the first 0x3ff I/O ports can be
74 .\" specified in this manner") still true? Looking at changes in
75 .\" include/asm-i386/processor.h between 2.4 and 2.6 suggests
76 .\" that the limit is different in 2.6.
77 .\"O Only the first 0x3ff I/O ports can be specified in this manner.
78 .\"O For more ports, the
80 .\"O function must be used.
81 この方法で設定できるのは 0x3ff 番地までの I/Oポートに限られる。
86 .\"O Permissions are not inherited by the child created by
88 .\"O Permissions are preserved across
90 .\"O this is useful for giving port access permissions to unprivileged
100 .\"O This call is mostly for the i386 architecture.
101 .\"O On many other architectures it does not exist or will always
102 .\"O return an error.
103 このシステムコールはほとんど i386 アーキテクチャのためだけのものである。
104 その他の多くのアーキテクチャでは存在しないか、常にエラーを返す。
106 成功した場合には 0 を返す。エラーの場合に \-1 を返し、
113 .\"O Invalid values for
123 .\"O (on PowerPC) This call is not supported.
124 (PowerPC で) このシステムコールはサポートしていない。
127 .\" Could not allocate I/O bitmap.
132 .\"O The calling process has insufficient privilege.
133 呼び出し元プロセスに十分な権限がなかった。
134 .\"O .SH "CONFORMING TO"
137 .\"O is Linux-specific and should not be used in programs
138 .\"O intended to be portable.
140 は Linux 特有の関数であり、移植を意図したプログラムで
144 .\"O Libc5 treats it as a system call and has a prototype in
145 .\"O .IR <unistd.h> .
146 .\"O Glibc1 does not have a prototype.
147 .\"O Glibc2 has a prototype both in
150 .\"O .IR <sys/perm.h> .
151 .\"O Avoid the latter, it is available on i386 only.
155 glibc1 にはプロトタイプは存在しない。
161 後者は i386 のみで利用可能なので、使用すべきではない。