134 lines
4.1 KiB
Groff
134 lines
4.1 KiB
Groff
.\" Copyright (c) 1980, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)chdir.2 8.2 (Berkeley) 12/11/93
|
|
.\" $Id$
|
|
.\"
|
|
.Dd December 11, 1993
|
|
.Dt CHDIR 2
|
|
.Os BSD 4
|
|
.Sh NAME
|
|
.Nm chdir ,
|
|
.Nm fchdir
|
|
.Nd change current working directory
|
|
.Sh SYNOPSIS
|
|
.Fd #include <unistd.h>
|
|
.Ft int
|
|
.Fn chdir "const char *path"
|
|
.Ft int
|
|
.Fn fchdir "int fd"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fa path
|
|
argument points to the pathname of a directory.
|
|
The
|
|
.Fn chdir
|
|
function
|
|
causes the named directory
|
|
to become the current working directory, that is,
|
|
the starting point for path searches of pathnames not beginning with
|
|
a slash,
|
|
.Ql / .
|
|
.Pp
|
|
The
|
|
.Fn fchdir
|
|
function
|
|
causes the directory referenced by
|
|
.Fa fd
|
|
to become the current working directory,
|
|
the starting point for path searches of pathnames not beginning with
|
|
a slash,
|
|
.Ql / .
|
|
.Pp
|
|
In order for a directory to become the current directory,
|
|
a process must have execute (search) access to the directory.
|
|
.Sh RETURN VALUES
|
|
Upon successful completion, a value of 0 is returned.
|
|
Otherwise, a value of -1 is returned and
|
|
.Va errno
|
|
is set to indicate
|
|
the error.
|
|
.Sh ERRORS
|
|
.Fn Chdir
|
|
will fail and the current working directory will be unchanged if
|
|
one or more of the following are true:
|
|
.Bl -tag -width Er
|
|
.It Bq Er ENOTDIR
|
|
A component of the path prefix is not a directory.
|
|
.It Bq Er ENAMETOOLONG
|
|
A component of a pathname exceeded 255 characters,
|
|
or an entire path name exceeded 1023 characters.
|
|
.It Bq Er ENOENT
|
|
The named directory does not exist.
|
|
.It Bq Er ELOOP
|
|
Too many symbolic links were encountered in translating the pathname.
|
|
.It Bq Er EACCES
|
|
Search permission is denied for any component of
|
|
the path name.
|
|
.It Bq Er EFAULT
|
|
.Fa Path
|
|
points outside the process's allocated address space.
|
|
.It Bq Er EIO
|
|
An I/O error occurred while reading from or writing to the file system.
|
|
.El
|
|
.Pp
|
|
.Fn Fchdir
|
|
will fail and the current working directory will be unchanged if
|
|
one or more of the following are true:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EACCES
|
|
Search permission is denied for the directory referenced by the
|
|
file descriptor.
|
|
.It Bq Er ENOTDIR
|
|
The file descriptor does not reference a directory.
|
|
.It Bq Er EBADF
|
|
The argument
|
|
.Fa fd
|
|
is not a valid file descriptor.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr chroot 2
|
|
.Sh STANDARDS
|
|
The
|
|
.Fn chdir
|
|
function call is expected to conform to
|
|
.St -p1003.1-90 .
|
|
.Sh HISTORY
|
|
A
|
|
.Fn chdir
|
|
function call appeared in
|
|
.At v7 .
|
|
The
|
|
.Fn fchdir
|
|
function call
|
|
appeared in
|
|
.Bx 4.2 .
|