smb_is_invalid_filename
if (smb_is_invalid_filename(new_name)) {
if (smb_is_invalid_filename(dst_fqi->fq_last_comp)) {
if (pn->pn_fname && smb_is_invalid_filename(pn->pn_fname)) {
if (smb_is_invalid_filename(fqi->fq_last_comp)) {
boolean_t smb_is_invalid_filename(const char *);