      h 0 }H h -280u }F

      NAME
           rename - change the name of a file

      SYNTAX
           rename(from, to)
           char *from, *to;

      DESCRIPTION
           Rename causes the link named from to be renamed as to.  If
           to exists, then it is first removed.  Both from and to must
           be of the same type (that is, both directories or both non-
           directories), and must reside on the same file system.

           Rename guarantees that an instance of to will always exist,
           even if the system should crash in the middle of the
           operation.

      RETURN VALUE
           A 0 value is returned if the operation succeeds, otherwise
           rename returns -1 and the global variable errno indicates
           the reason for the failure.

      ERRORS
           Rename will fail and neither of the argument files will be
           affected if any of the following are true:

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

           [ENOENT]       A component of either path prefix does not
                          exist.

           [EACCES]       A component of either path prefix denies
                          search permission.

           [ENOENT]       The file named by from does not exist.

           [EPERM]        The file named by from is a directory and the
                          effective user ID is not super-user.

           [EXDEV]        The link named by to and the file named by
                          from are on different logical devices (file
                          systems).  Note that this error code will not
                          be returned if the implementation permits
                          cross-device links.

           [EACCES]       The requested link requires writing in a
                          directory with a mode that denies write
                          permission.

           [EROFS]        The requested link requires writing in a
                          directory on a read-only file system.

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

           [EINVAL]       From is a parent directory of to.

      SEE ALSO
           open(2)




