PROLOG

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

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 .