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CHDIR(3P)                  POSIX Programmer's Manual                 CHDIR(3P)



PROLOG
       This manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may dif-
       fer (consult the corresponding Linux manual page for details of Linux behavior), or the interface  may  not  be
       implemented on Linux.

NAME
       chdir - change working directory

SYNOPSIS
       #include <unistd.h>

       int chdir(const char *path);


DESCRIPTION
       The  chdir() function shall cause the directory named by the pathname pointed to by the path argument to become
       the current working directory; that is, the starting point for path searches for pathnames not  beginning  with
       '/' .

RETURN VALUE
       Upon successful completion, 0 shall be returned. Otherwise, -1 shall be returned, the current working directory
       shall remain unchanged, and errno shall be set to indicate the error.

ERRORS
       The chdir() function shall fail if:

       EACCES Search permission is denied for any component of the pathname.

       ELOOP  A loop exists in symbolic links encountered during resolution of the path argument.

       ENAMETOOLONG
              The length of the path argument exceeds {PATH_MAX} or a pathname component is longer than {NAME_MAX}.

       ENOENT A component of path does not name an existing directory or path is an empty string.

       ENOTDIR
              A component of the pathname is not a directory.


       The chdir() function may fail if:

       ELOOP  More than {SYMLOOP_MAX} symbolic links were encountered during resolution of the path argument.

       ENAMETOOLONG
              As a result of encountering a symbolic link in resolution of the path argument, the length of  the  sub-
              stituted pathname string exceeded {PATH_MAX}.


       The following sections are informative.

EXAMPLES
   Changing the Current Working Directory
       The following example makes the value pointed to by directory, /tmp, the current working directory.


              #include <unistd.h>
              ...
              char *directory = "/tmp";
              int ret;


              ret = chdir (directory);

APPLICATION USAGE
       None.

RATIONALE
       The chdir() function only affects the working directory of the current process.

FUTURE DIRECTIONS
       None.

SEE ALSO
       getcwd(), the Base Definitions volume of IEEE Std 1003.1-2001, <unistd.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Stan-
       dard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base  Specifica-
       tions  Issue  6,  Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The
       Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Stan-
       dard,  the  original  IEEE  and  The  Open Group Standard is the referee document. The original Standard can be
       obtained online at http://www.opengroup.org/unix/online.html .



IEEE/The Open Group                  2003                            CHDIR(3P)