rootfs_dot_or_dotdot
extern boolean_t rootfs_dot_or_dotdot(char *);
if (rootfs_dot_or_dotdot(nm))
if (rootfs_dot_or_dotdot(nm))
if (rootfs_dot_or_dotdot(dname)) {
if (rootfs_dot_or_dotdot(ptr->d_name))
if (rootfs_dot_or_dotdot(nm)) {
if (rootfs_dot_or_dotdot(nm)) {