FCHDIR(3)                  POSIX Programmer's Manual                 FCHDIR(3)



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

NAME
       fchdir -- change working directory

SYNOPSIS
       #include <unistd.h>

       int fchdir(int fildes);

DESCRIPTION
       The fchdir() function shall be equivalent to chdir() except that the
       directory that is to be the new current working directory is specified
       by the file descriptor fildes.

       A conforming application can obtain a file descriptor for a file of
       type directory using open(), provided that the file status flags and
       access modes do not contain O_WRONLY or O_RDWR.

RETURN VALUE
       Upon successful completion, fchdir() shall return 0. Otherwise, it
       shall return -1 and set errno to indicate the error. On failure the
       current working directory shall remain unchanged.

ERRORS
       The fchdir() function shall fail if:

       EACCES Search permission is denied for the directory referenced by
              fildes.

       EBADF  The fildes argument is not an open file descriptor.

       ENOTDIR
              The open file descriptor fildes does not refer to a directory.

       The fchdir() may fail if:

       EINTR  A signal was caught during the execution of fchdir().

       EIO    An I/O error occurred while reading from or writing to the file
              system.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       chdir(), dirfd()

       The Base Definitions volume of POSIX.1-2017, <unistd.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 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 Standard, 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 .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                  2017                            FCHDIR(3)
