smb_fsop_frlock
rc = smb_fsop_frlock(node, lock, B_FALSE, sr->user_cr);
(void) smb_fsop_frlock(node, &new_unlock,
(void) smb_fsop_frlock(node, &new_unlock,
int smb_fsop_frlock(smb_node_t *, smb_lock_t *, boolean_t, cred_t *);