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CHDIR(2)                    BSD System Calls Manual                   CHDIR(2)

NAME
     chdir, fchdir -- change current working directory

SYNOPSIS
     #include <&lt;unistd.h>&gt;

     int
     chdir(const char *path);

     int
     fchdir(int fd);

DESCRIPTION
     The path argument points to the pathname of a directory.  The chdir()
     function causes the named directory to become the current working direc-
     tory, that is, the starting point for path searches of pathnames not
     beginning with a slash ('/').

     The fchdir() function causes the directory referenced by fd to become the
     current working directory, the starting point for path searches of path-
     names not beginning with a slash ('/').

     In order for a directory to become the current directory, a process must
     have execute (search) access to the directory.

RETURN VALUES
     Upon successful completion, the value 0 is returned; otherwise the
     value -1 is returned and the global variable errno is set to indicate the
     error.

ERRORS
     chdir() will fail and the current working directory will be unchanged if
     one or more of the following are true:

     [ENOTDIR]          A component of the path prefix is not a directory.

     [ENAMETOOLONG]     A component of a pathname exceeded NAME_MAX charac-
                        ters, or an entire pathname (including the terminating
                        NUL) exceeded PATH_MAX bytes.

     [ENOENT]           The named directory does not exist.

     [ELOOP]            Too many symbolic links were encountered in translat-
                        ing the pathname.

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

     [EFAULT]           path points outside the process's allocated address
                        space.

     [EIO]              An I/O error occurred while reading from the file sys-
                        tem.

     fchdir() will fail and the current working directory will be unchanged if
     one or more of the following are true:

     [EACCES]           Search permission is denied for the directory refer-
                        enced by the file descriptor.

     [ENOTDIR]          The file descriptor does not reference a directory.

     [EBADF]            The argument fd is not a valid file descriptor.

     [EIO]              An I/O error occurred while reading from the file sys-
                        tem.

SEE ALSO
     chroot(2)

STANDARDS
     The chdir() and fchdir() functions are expected to conform to IEEE Std
     1003.1-2008 (``POSIX.1'').

HISTORY
     The chdir() system call first appeared in Version 1 AT&T UNIX, and
     fchdir() in 4.3BSD-Reno.

BSD                             March 30, 2017                             BSD