chdir(2)                                                           chdir(2)


   NAME
         chdir, fchdir - change working directory

   SYNOPSIS
         #include <unistd.h>

         int chdir(const char *path);

         int fchdir(int fildes);

   DESCRIPTION
         chdir and fchdir cause a directory pointed to by path or fildes to
         become the current working directory, the starting point for path
         searches for path names not beginning with /.  path points to the
         path name of a directory.  The fildes argument to fchdir is an open
         file descriptor of a directory.

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

         chdir 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 any component of
                             the path name.

         EFAULT              path points outside the allocated address space
                             of the process.

         EINTR               A signal was caught during the execution of the
                             chdir system call.

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

         ELOOP               Too many symbolic links were encountered in
                             translating path.

         ENAMETOOLONG        The length of the path argument exceeds
                             {PATH_MAX}, or the length of a path component
                             exceeds {NAME_MAX} while _POSIX_NO_TRUNC is in
                             effect.

         ENOTDIR             A component of the path name is not a directory.

         ENOENT              Either a component of the path prefix or the
                             directory named by path does not exist or is a
                             null pathname.





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   chdir(2)                                                           chdir(2)


         ENOLINK             path points to a remote machine and the link to
                             that machine is no longer active.

         EMULTIHOP           Components of path require hopping to multiple
                             remote machines and file system type does not
                             allow it.

         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 fildes.

         EBADF               fildes is not an open file descriptor.

         EINTR               A signal was caught during the execution of the
                             fchdir system call.

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

         ENOLINK             fildes points to a remote machine and the link to
                             that machine is no longer active.

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

   SEE ALSO
         chroot(2).

   DIAGNOSTICS
         Upon successful completion, a value of zero is returned.  Otherwise,
         a value of -1 is returned and errno is set to indicate the error.





















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