_update_vfstab
ret = _update_vfstab(alt_vfstab, be_name, old_rc_loc, new_rc_loc,
ret = _update_vfstab(alt_vfstab, be_name, old_rc_loc, new_rc_loc,
static int _update_vfstab(char *, char *, char *, char *, be_fs_list_data_t *);