smb_fsop_setattr
rc = smb_fsop_setattr(sr, sr->user_cr, fnode,
error = smb_fsop_setattr(sr, cr, snode, &set_attr);
(void) smb_fsop_setattr(sr, kcr, snode,
rc = smb_fsop_setattr(sr, cr, node, attr);
int smb_fsop_setattr(smb_request_t *, cred_t *, smb_node_t *, smb_attr_t *);