4.4BSD/usr/share/man/cat2/chdir.0

CHDIR(2)                    BSD Programmer's Manual                   CHDIR(2)

NNAAMMEE
     cchhddiirr, ffcchhddiirr - change current working directory

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<uunniissttdd..hh>>

     _i_n_t
     cchhddiirr(_c_o_n_s_t _c_h_a_r _*_p_a_t_h);

     _i_n_t
     ffcchhddiirr(_i_n_t _f_d);

DDEESSCCRRIIPPTTIIOONN
     The _p_a_t_h arument points to the pathname of a directory.  The cchhddiirr()
     function causes the named directory to become the current working direc-
     tory, that is, the starting point for path searches of pathnames not be-
     ginning with a slash, `/'.

     The ffcchhddiirr() function causes the directory referenced by _f_d 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.

RREETTUURRNN VVAALLUUEESS
     Upon successful completion, a value of 0 is returned.  Otherwise, a value
     of -1 is returned and _e_r_r_n_o is set to indicate the error.

EERRRROORRSS
     CChhddiirr() 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.

     [EINVAL]      The pathname contains a character with the high-order bit
                   set.

     [ENAMETOOLONG]
                   A component of a pathname exceeded 255 characters, or an
                   entire path name exceeded 1023 characters.

     [ENOENT]      The named directory does not exist.

     [ELOOP]       Too many symbolic links were encountered in translating the
                   pathname.

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

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

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

     FFcchhddiirr() 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 referenced by
                   the file descriptor.



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

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

SSEEEE AALLSSOO
     chroot(2)

SSTTAANNDDAARRDDSS
     CChhddiirr() is expected to conform to IEEE Std 1003.1-1988 (``POSIX'').

HHIISSTTOORRYY
     The ffcchhddiirr() function call appeared in 4.2BSD.

4th Berkeley Distribution        June 4, 1993                                2