| .\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992 |
| .\" |
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| .\" 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> |
| .\" |
| .TH CHDIR 2 2019-08-02 "Linux" "Linux Programmer's Manual" |
| .SH NAME |
| chdir, fchdir \- change working directory |
| .SH SYNOPSIS |
| .B #include <unistd.h> |
| .PP |
| .BI "int chdir(const char *" path ); |
| .br |
| .BI "int fchdir(int " fd ); |
| .PP |
| .in -4n |
| Feature Test Macro Requirements for glibc (see |
| .BR feature_test_macros (7)): |
| .in |
| .PP |
| .BR fchdir (): |
| .PD 0 |
| .ad l |
| .RS 4 |
| _XOPEN_SOURCE\ >=\ 500 |
| .\" || _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED |
| || /* Since glibc 2.12: */ _POSIX_C_SOURCE\ >=\ 200809L |
| || /* Glibc up to and including 2.19: */ _BSD_SOURCE |
| .RE |
| .ad |
| .PD |
| .SH DESCRIPTION |
| .BR chdir () |
| changes the current working directory of the calling process to the |
| directory specified in |
| .IR path . |
| .PP |
| .BR fchdir () |
| is identical to |
| .BR chdir (); |
| the only difference is that the directory is given as an |
| open file descriptor. |
| .SH RETURN VALUE |
| On success, zero is returned. |
| On error, \-1 is returned, and |
| .I errno |
| is set appropriately. |
| .SH ERRORS |
| Depending on the filesystem, other errors can be returned. |
| The more |
| general errors for |
| .BR chdir () |
| are listed below: |
| .TP |
| .B EACCES |
| Search permission is denied for one of the components of |
| .IR path . |
| (See also |
| .BR path_resolution (7).) |
| .TP |
| .B EFAULT |
| .I path |
| points outside your accessible address space. |
| .TP |
| .B EIO |
| An I/O error occurred. |
| .TP |
| .B ELOOP |
| Too many symbolic links were encountered in resolving |
| .IR path . |
| .TP |
| .B ENAMETOOLONG |
| .I path |
| is too long. |
| .TP |
| .B ENOENT |
| The directory specified in |
| .I path |
| does not exist. |
| .TP |
| .B ENOMEM |
| Insufficient kernel memory was available. |
| .TP |
| .B ENOTDIR |
| A component of |
| .I path |
| is not a directory. |
| .PP |
| The general errors for |
| .BR fchdir () |
| are listed below: |
| .TP |
| .B EACCES |
| Search permission was denied on the directory open on |
| .IR fd . |
| .TP |
| .B EBADF |
| .I fd |
| is not a valid file descriptor. |
| .TP |
| .B ENOTDIR |
| .I fd |
| does not refer to a directory. |
| .SH CONFORMING TO |
| POSIX.1-2001, POSIX.1-2008, SVr4, 4.4BSD. |
| .SH NOTES |
| The current working directory is the starting point for interpreting |
| relative pathnames (those not starting with \(aq/\(aq). |
| .PP |
| A child process created via |
| .BR fork (2) |
| inherits its parent's current working directory. |
| The current working directory is left unchanged by |
| .BR execve (2). |
| .SH SEE ALSO |
| .BR chroot (2), |
| .BR getcwd (3), |
| .BR path_resolution (7) |