Cross Reference: /src/sys/kern/tty

Lines Matching defs:disc
121 #define	TTYLDISC_ISSTATIC(disc)					\
122 	((disc) == &termios_disc || (disc) == &ntty_disc)
124 #define	TTYLDISC_HOLD(disc)					\
126 	if (! TTYLDISC_ISSTATIC(disc)) {			\
127 		KASSERT((disc)->l_refcnt != UINT_MAX);		\
128 		(disc)->l_refcnt++;				\
132 #define	TTYLDISC_RELE(disc)					\
134 	if (! TTYLDISC_ISSTATIC(disc)) {			\
135 		KASSERT((disc)->l_refcnt != 0);			\
136 		(disc)->l_refcnt--;				\
140 #define	TTYLDISC_ISINUSE(disc)					\
141 	(TTYLDISC_ISSTATIC(disc) || (disc)->l_refcnt != 0)
180 	struct linesw *disc;
182 	LIST_FOREACH(disc, &ttyldisc_list, l_list) {
183 		if (strcmp(name, disc->l_name) == 0)
184 			return (disc);
197 	struct linesw *disc;
200 	disc = ttyldisc_lookup_locked(name);
201 	if (disc != NULL)
202 		TTYLDISC_HOLD(disc);
205 	return (disc);
215 	struct linesw *disc;
219 	LIST_FOREACH(disc, &ttyldisc_list, l_list) {
220 		if (disc->l_no == num) {
221 			TTYLDISC_HOLD(disc);
223 			return (disc);
236 ttyldisc_release(struct linesw *disc)
239 	if (disc == NULL)
243 	TTYLDISC_RELE(disc);
251 ttyldisc_assign_legacy_number(struct linesw *disc)
270 		if (strcmp(disc->l_name, table[i].name) == 0) {
271 			disc->l_no = table[i].num;
276 	disc->l_no = TTYLDISC_LEGACY_NUMBER_MIN;
279 		if (disc->l_no == ldisc->l_no) {
280 			KASSERT(disc->l_no < TTYLDISC_LEGACY_NUMBER_MAX);
281 			disc->l_no++;
290 ttyldisc_attach(struct linesw *disc)
293 	KASSERT(disc->l_name != NULL);
294 	KASSERT(disc->l_open != NULL);
295 	KASSERT(disc->l_close != NULL);
296 	KASSERT(disc->l_read != NULL);
297 	KASSERT(disc->l_write != NULL);
298 	KASSERT(disc->l_ioctl != NULL);
299 	KASSERT(disc->l_rint != NULL);
300 	KASSERT(disc->l_start != NULL);
301 	KASSERT(disc->l_modem != NULL);
302 	KASSERT(disc->l_poll != NULL);
305 	if (strlen(disc->l_name) >= TTLINEDNAMELEN)
310 	if (ttyldisc_lookup_locked(disc->l_name) != NULL) {
315 	ttyldisc_assign_legacy_number(disc);
316 	LIST_INSERT_HEAD(&ttyldisc_list, disc, l_list);
327 ttyldisc_detach(struct linesw *disc)
330 	struct linesw *ldisc = ttyldisc_lookup(disc->l_name);
333 	KASSERT(ldisc == disc);
339 	if (TTYLDISC_ISINUSE(disc)) {
344 	LIST_REMOVE(disc, l_list);
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