mirror of https://github.com/mkerrisk/man-pages
128 lines
3.3 KiB
Groff
128 lines
3.3 KiB
Groff
.\" Hey Emacs! This file is -*- nroff -*- source.
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.\"
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.\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992
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.\"
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\"
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.\" Modified by Michael Haardt <michael@moria.de>
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.\" Modified 1993-07-21 by Rik Faith <faith@cs.unc.edu>
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.\" Modified 1995-04-15 by Michael Chastain <mec@shell.portal.com>:
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.\" Added 'fchdir'. Fixed bugs in error section.
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.\" Modified 1996-10-21 by Eric S. Raymond <esr@thyrsus.com>
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.\" Modified 1997-08-21 by Joseph S. Myers <jsm28@cam.ac.uk>
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.\" Modified 2004-06-23 by Michael Kerrisk <mtk-manpages@gmx.net>
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.\"
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.TH CHDIR 2 2004-06-23 "Linux 2.6.7" "Linux Programmer's Manual"
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.SH NAME
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chdir, fchdir \- change working directory
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.SH SYNOPSIS
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.B #include <unistd.h>
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.sp
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.BI "int chdir(const char *" path );
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.br
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.BI "int fchdir(int " fd );
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.SH DESCRIPTION
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.BR chdir ()
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changes the current working directory to that specified in
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.IR path .
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.PP
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.BR fchdir ()
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is identical to
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.BR chdir ();
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the only difference is that the directory is given as an
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open file descriptor.
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.SH "RETURN VALUE"
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On success, zero is returned.
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On error, \-1 is returned, and
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.I errno
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is set appropriately.
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.SH ERRORS
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Depending on the file system, other errors can be returned.
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The more
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general errors for
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.BR chdir ()
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are listed below:
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.TP
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.B EACCES
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Search permission is denied for one of the directories
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in the path prefix of
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.IR path .
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(See also
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.BR path_resolution (2).)
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.TP
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.B EFAULT
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.I path
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points outside your accessible address space.
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.TP
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.B EIO
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An I/O error occurred.
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.TP
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.B ELOOP
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Too many symbolic links were encountered in resolving
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.IR path .
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.TP
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.B ENAMETOOLONG
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.I path
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is too long.
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.TP
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.B ENOENT
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The file does not exist.
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.TP
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.B ENOMEM
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Insufficient kernel memory was available.
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.TP
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.B ENOTDIR
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A component of
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.I path
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is not a directory.
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.PP
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The general errors for
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.BR fchdir ()
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are listed below:
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.TP
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.B EACCES
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Search permission was denied on the directory open on
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.IR fd .
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.TP
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.B EBADF
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.I fd
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is not a valid file descriptor.
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.SH NOTES
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A child process created via
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.BR fork (2)
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inherits its parent's current working directory.
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The current working directory is left unchanged by
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.BR execve (2).
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The prototype for
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.BR fchdir ()
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is only available if
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.B _BSD_SOURCE
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is defined, or
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.B _XOPEN_SOURCE
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is defined with the value 500.
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.SH "CONFORMING TO"
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SVr4, 4.4BSD, POSIX.1-2001.
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.SH "SEE ALSO"
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.BR chroot (2),
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.BR path_resolution (2),
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.BR getcwd (3)
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