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[linuxjm/LDP_man-pages.git] / draft / man2 / chdir.2

.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992
.\"
.\" 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.\" manual page may be incorrect or out-of-date.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 by Michael Haardt <michael@moria.de>
.\" Modified 1993-07-21 by Rik Faith <faith@cs.unc.edu>
.\" Modified 1995-04-15 by Michael Chastain <mec@shell.portal.com>:
.\"   Added 'fchdir'. Fixed bugs in error section.
.\" Modified 1996-10-21 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 1996-06-24, Yosiaki Yanagihara <yosiaki@bsd2.kbnes.nec.co.jp>
.\" Modified 1997-12-13, HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Updated & Modified 2005-02-05, Yuichi SATO <ysato444@yahoo.co.jp>
.\" Updated 2006-08-12, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.39
.\" Updated 2007-09-04, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.64
.\"
.TH CHDIR 2 2007-07-26 "Linux" "Linux Programmer's Manual"
.\"O .SH NAME
.SH ̾Á°
.\"O chdir, fchdir \- change working directory
chdir, fchdir \- ºî¶È¥Ç¥£¥ì¥¯¥È¥ê¤ÎÊѹ¹
.\"O .SH SYNOPSIS
.SH ½ñ¼°
.B #include <unistd.h>
.sp
.BI "int chdir(const char *" path );
.br
.BI "int fchdir(int " fd );
.sp
.in -4n
.\"O Feature Test Macro Requirements for glibc (see
.\"O .BR feature_test_macros (7)):
glibc ¸þ¤±¤Îµ¡Ç½¸¡ºº¥Þ¥¯¥í¤ÎÍ×·ï
.RB ( feature_test_macros (7)
»²¾È):
.in
.sp
.BR fchdir ():
_BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500
.\"O .SH DESCRIPTION
.SH ÀâÌÀ
.\"O .BR chdir ()
.\"O changes the current working directory of the calling process to the
.\"O directory specified in
.\"O .IR path .
.BR chdir ()
¤Ï¡¢¸Æ¤Ó½Ð¤·¸µ¥×¥í¥»¥¹¤Î¸½ºß¤Îºî¶È¥Ç¥£¥ì¥¯¥È¥ê (current working directory) ¤ò¡¢
.I path
¤Ë»ØÄꤵ¤ì¤¿¥Ç¥£¥ì¥¯¥È¥ê¤ËÊѹ¹¤¹¤ë¡£
.PP
.\"O .BR fchdir ()
.\"O is identical to
.\"O .BR chdir ();
.\"O the only difference is that the directory is given as an
.\"O open file descriptor.
.BR fchdir ()
¤Ï¡¢¥Ç¥£¥ì¥¯¥È¥ê¤¬¥ª¡¼¥×¥ó¤µ¤ì¤¿¥Õ¥¡¥¤¥ë¡¦¥Ç¥£¥¹¥¯¥ê¥×¥¿¡¼¤È¤·¤Æ
»ØÄꤵ¤ì¤ë°Ê³°¤Ï¡¢
.BR chdir ()
¤ÈƱ¤¸¤Ç¤¢¤ë¡£
.\"O .SH "RETURN VALUE"
.SH ÊÖ¤êÃÍ
.\"O On success, zero is returned.
.\"O On error, \-1 is returned, and
.\"O .I errno
.\"O is set appropriately.
À®¸ù¤¹¤ë¤È¡¢0 ¤òÊÖ¤¹¡£¼ºÇÔ¤¹¤ë¤È¡¢\-1 ¤òÊÖ¤·¡¢
.I errno
¤ËŬÀÚ¤ÊÃͤò¥»¥Ã¥È¤¹¤ë¡£
.\"O .SH ERRORS
.SH ¥¨¥é¡¼
.\"O Depending on the file system, other errors can be returned.
.\"O The more
.\"O general errors for
.\"O .BR chdir ()
.\"O are listed below:
¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤Ë¤è¤Ã¤Æ¤Ï¾¤Î¥¨¥é¡¼¤¬ÊÖ¤µ¤ì¤ë»ö¤¬¤¢¤ë¡£
.BR chdir ()
¤Ç°ìÈÌŪ¤Ê¥¨¥é¡¼¤ò°Ê²¼¤Ëµó¤²¤ë:
.TP
.B EACCES
.\"O Search permission is denied for one of the components of
.\"O .IR path .
.\"O (See also
.\"O .BR path_resolution (7).)
.I path
¤Î¹½À®Í×ÁǤΤ¤¤º¤ì¤«¤Ë¸¡º÷µö²Ä (search permission) ¤¬¤Ê¤¤
.RB ( path_resolution (7)
¤â»²¾È¤¹¤ë¤³¤È)¡£
.TP
.B EFAULT
.\"O .I path
.\"O points outside your accessible address space.
³ä¤êÅö¤Æ¤é¤ì¤¿¥¢¥É¥ì¥¹¶õ´Ö³°¤ò
.I path
¤¬»Ø¤·¤Æ¤¤¤ë¡£
.TP
.B EIO
.\"O An I/O error occurred.
I/O ¥¨¥é¡¼¤¬È¯À¸¤·¤¿¡£
.TP
.B ELOOP
.\"O Too many symbolic links were encountered in resolving
.\"O .IR path .
.I path
¤ò²ò·è¤¹¤ëºÝ¤ËÁø¶ø¤·¤¿¥·¥ó¥Ü¥ê¥Ã¥¯¡¦¥ê¥ó¥¯¤¬Â¿²á¤®¤ë¡£
.TP
.B ENAMETOOLONG
.\"O .I path
.\"O is too long.
.I path
¤¬Ä¹²á¤®¤ë¡£
.TP
.B ENOENT
.\"O The file does not exist.
.\"Osato:
.\"Osato: file ¤Ç¤Ï¤Ê¤¯ directory ¤Î´Ö°ã¤¤¤«?
.\"Osato:
¤½¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Ï¸ºß¤·¤Ê¤¤¡£
.TP
.B ENOMEM
.\"O Insufficient kernel memory was available.
¥«¡¼¥Í¥ë¤Ë½½Ê¬¤Ê¥á¥â¥ê¤¬¤Ê¤¤¡£
.TP
.B ENOTDIR
.\"O A component of
.\"O .I path
.\"O is not a directory.
.I path
¤Î¹½À®Í×ÁǤ¬¥Ç¥£¥ì¥¯¥È¥ê¤Ç¤Ï¤Ê¤¤¡£
.PP
.\"O The general errors for
.\"O .BR fchdir ()
.\"O are listed below:
.BR fchdir ()
¤Ç°ìÈÌŪ¤Ê¥¨¥é¡¼¤ò°Ê²¼¤Ëµó¤²¤ë:
.TP
.B EACCES
.\"O Search permission was denied on the directory open on
.\"O .IR fd .
.I fd
¤ò¥Ç¥£¥ì¥¯¥È¥ê¤È¤·¤Æ¥ª¡¼¥×¥ó¤¹¤ë¤¿¤á¤Î¸¡º÷µö²Ä¤¬¤Ê¤¤¡£
.TP
.B EBADF
.\"O .I fd
.\"O is not a valid file descriptor.
.I fd
¤¬Å¬Àڤʥե¡¥¤¥ë¡¦¥Ç¥£¥¹¥¯¥ê¥×¥¿¡¼¤Ç¤Ê¤¤¡£
.\"O .SH "CONFORMING TO"
.SH ½àµò
SVr4, 4.4BSD, POSIX.1-2001.
.\"O .SH NOTES
.SH Ãí°Õ
.\"O The current working directory is the starting point for interpreting
.\"O relative pathnames (those not starting with \(aq/\(aq)).
¸½ºß¤Îºî¶È¥Ç¥£¥ì¥¯¥È¥ê¤Ï¡¢ÁêÂХѥ¹Ì¾ (\(aq/\(aq) ¤Ç»Ï¤Þ¤Ã¤Æ¤¤¤Ê¤¤¥Ñ¥¹Ì¾) ¤ò
²ò¼á¤¹¤ëºÝ¤Î³«»ÏÅÀ¤Ç¤¢¤ë¡£

.\"O A child process created via
.\"O .BR fork (2)
.\"O inherits its parent's current working directory.
.\"O The current working directory is left unchanged by
.\"O .BR execve (2).
.BR fork (2)
¤ÇºîÀ®¤µ¤ì¤¿»Ò¥×¥í¥»¥¹¤Ï¡¢¿Æ¥×¥í¥»¥¹¤Î¸½ºß¤Îºî¶È¥Ç¥£¥ì¥¯¥È¥ê¤ò
·Ñ¾µ¤¹¤ë¡£
.BR execve (2)
¤ÎÁ°¸å¤Ç¡¢¸½ºß¤Îºî¶È¥Ç¥£¥ì¥¯¥È¥ê¤ÏÊѹ¹¤µ¤ì¤Ê¤¤¡£

.\"O The prototype for
.\"O .BR fchdir ()
.\"O is only available if
.\"O .B _BSD_SOURCE
.\"O is defined, or
.\"O .B _XOPEN_SOURCE
.\"O is defined with the value 500.
.BR fchdir ()
¤Î¥×¥í¥È¥¿¥¤¥×¤¬Í­¸ú¤Ë¤Ê¤ë¤Î¤Ï¡¢
.B _BSD_SOURCE
¤òÄêµÁ¤·¤¿¾ì¹ç¤«¡¢
.B _XOPEN_SOURCE
¤òÃÍ 500 ¤ÇÄêµÁ¤·¤¿¾ì¹ç¤Î¤ß¤Ç¤¢¤ë¡£
.\"O .SH "SEE ALSO"
.SH ´ØÏ¢¹àÌÜ
.BR chroot (2),
.BR getcwd (3),
.BR path_resolution (7)