.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992
.\"
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.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
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.\" 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.\" manual page may be incorrect or out-of-date.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 by Michael Haardt <michael@moria.de>
.\" Modified 1993-07-21 by Rik Faith <faith@cs.unc.edu>
.\" Modified 1994-08-21 by Michael Chastain <mec@shell.portal.com>
.\" Modified 1996-06-13 by aeb
.\" Modified 1996-11-06 by Eric S. Raymond <esr@thyrsus.com>
.\" Modified 1997-08-21 by Joseph S. Myers <jsm28@cam.ac.uk>
.\" Modified 2004-06-23 by Michael Kerrisk <mtk.manpages@gmail.com>
.\"
.\" Japanese Version Copyright (c) 1996 Yosiaki Yanagihara
.\"         all rights reserved.
.\" Translated Mon Jun 24 14:29:55 JST 1996
.\"         by Yosiaki Yanagihara <yosiaki@bsd2.kbnes.nec.co.jp>
.\" Modified Sat Dec 13 23:29:07 JST 1997
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Updated & Modified Fri 6 Apr 2001
.\"         by NAKANO Takeo <nakano@apm.seikei.ac.jp>
.\" Updated & Modified Thu Dec 23 10:04:20 JST 2004
.\"         by Yuichi SATO <ysato444@yahoo.co.jp>
.\"
.TH CHROOT 2 2004-06-23 "Linux" "Linux Programmer's Manual"
.SH ̾
chroot \- 롼ȡǥ쥯ȥѹ
.SH 
.B #include <unistd.h>
.sp
.BI "int chroot(const char *" path );
.SH 
.BR chroot ()
ϡ롼ȡǥ쥯ȥ
.I path
ǻꤵ줿ǥ쥯ȥѹ롣
Υǥ쥯ȥʲ \fI/\fP Ϥޤѥ̾ȤƻȤ롣
Υ롼ȡǥ쥯ȥϸƤӽФΥץƤλҥץ˼Ѥ롣
.PP
øץ (Linux Ǥϡ
.B CAP_SYS_CHROOT
ѥӥƥĥץ) Τߤ
.BR chroot ()
ƤӽФȤǤ롣
.PP
Υϥѥ̾βǹǤѹΤߤǡ
¾ˤϲԤʤ
.PP
Υϸߤκȥǥ쥯ȥ
(working directory) ѹʤ
ΤᡢΥθ '\fI.\fP'  '\fI/\fP' 򺬤Ȥ
ĥ꡼γˤʤ礬롣
äˡѡ桼ϰʲΤ褦ˤ뤳Ȥ
"chroot jail" ƨФƤޤ
.nf

    mkdir foo; chroot foo; cd ..
.fi

Υϥץեǥץ򥯥ʤΤǡ
Τ褦ʥեǥץ chroot ĥ꡼γˤ
ե˥Ǥ롣
.SH ֤
 0 ֤
Ԥ \-1 ֤
.I errno
Ŭڤͤꤹ롣
.SH 顼
ե륷ƥˤäƤ¾Υ顼֤롣
Ūʥ顼ʲ˵󤲤:
.TP
.B EACCES
ѥ̾Τɤ˸ (search permission) ʤ
.RB ( path_resolution (7)
⻲Ȥ뤳ȡ)
.\" ѥ̾κǸιǤˤ⸡ĤɬפǤ롣
.\" 餯줬ǥ쥯ȥǤ뤳Ȥݾڤ뤿ʤΤ?
.TP
.B EFAULT
.I path
Ƥ줿ɥ쥹ֳؤƤ롣
.TP
.B EIO
I/O 顼ȯ
.TP
.B ELOOP
.I path
褹ݤܥå󥯤¿᤮롣
.TP
.B ENAMETOOLONG
.I path
Ĺ᤮롣
.TP
.B ENOENT
ե뤬¸ߤʤ
.TP
.B ENOMEM
ͥ˽ʬʥ꤬ʤ
.TP
.B ENOTDIR
.I path
Ƥǥ쥯ȥǤϤʤ
.TP
.B EPERM
ƤӽФ¦˽ʬøʤ
.SH 
SVr4, 4.4BSD, SUSv2 (âSUSv2 Ǥϲ̾ĤȤƤ)
δؿ POSIX.1-2001 ˤϤʤ
.\" SVr4 ˤ¾ EINTR, ENOLINK, EMULTIHOP 顼֤ˤĤƤεҤ롣
.\" X/OPEN ˤ EIO, ENOMEM, EFAULT 顼֤εҤϤʤ
.SH 
.BR fork (2)
Ǻ줿ҥץϡ
ƥץΥ롼ȡǥ쥯ȥѾ롣
.BR execve (2)
ξ⡢롼ȡǥ쥯ȥѹʤ

FreeBSD ˤϤ궯Ϥ
.BR jail ()
ƥॳ뤬롣
.\" FIXME . eventually say something about containers,
.\" virtual servers, etc.?
.SH Ϣ
.BR chdir (2),
.BR path_resolution (7)