103 mydev_open(struct dev_open_args *args)  in mydev_open()  argument
106 	    devid_from_dev(args->a_head.a_dev), args->a_oflags,  in mydev_open()
107 	    args->a_devtype);  in mydev_open()
115 mydev_close(struct dev_close_args *args)  in mydev_close()  argument
118 	    devid_from_dev(args->a_head.a_dev), args->a_fflag,  in mydev_close()
119 	    args->a_devtype);  in mydev_close()
125 mydev_ioctl(struct dev_ioctl_args *args)  in mydev_ioctl()  argument
130 	    devid_from_dev(args->a_head.a_dev), args->a_cmd, args->a_data,  in mydev_ioctl()
131 	    args->a_fflag);  in mydev_ioctl()
133 	switch(args->a_cmd) {  in mydev_ioctl()
151 mydev_write(struct dev_write_args *args)  in mydev_write()  argument
156 	    devid_from_dev(args->a_head.a_dev), args->a_uio, args->a_ioflag);  in mydev_write()
158 	err = copyinstr(args->a_uio->uio_iov->iov_base, &buf, 512, &len);  in mydev_write()
172 mydev_read(struct dev_read_args *args)  in mydev_read()  argument
177 	    devid_from_dev(args->a_head.a_dev), args->a_uio, args->a_ioflag);  in mydev_read()
184 		copystr(&buf, args->a_uio->uio_iov->iov_base, 513, &len);  in mydev_read()