50 #define	VTBUF_LOCK(vb)		mtx_lock_spin(&(vb)->vb_lock)  argument
51 #define	VTBUF_UNLOCK(vb)	mtx_unlock_spin(&(vb)->vb_lock)  argument
60 static int vtbuf_htw(const struct vt_buf *vb, int row);
61 static int vtbuf_wth(const struct vt_buf *vb, int row);
74 vthistory_seek(struct vt_buf *vb, int offset, int whence)  in vthistory_seek()  argument
79 	if ((vb->vb_flags & VBF_SCROLL) == 0) {  in vthistory_seek()
80 		if (vb->vb_roffset != vb->vb_curroffset) {  in vthistory_seek()
81 			vb->vb_roffset = vb->vb_curroffset;  in vthistory_seek()
88 	bottom = vb->vb_curroffset;  in vthistory_seek()
89 	top = (vb->vb_flags & VBF_HISTORY_FULL) ?  in vthistory_seek()
90 	    bottom + vb->vb_scr_size.tp_row - vb->vb_history_size :  in vthistory_seek()
105 		roffset = vb->vb_roffset;  in vthistory_seek()
106 		if (roffset >= bottom + vb->vb_scr_size.tp_row)  in vthistory_seek()
107 			roffset -= vb->vb_history_size;  in vthistory_seek()
114 			roffset = vb->vb_history_size + roffset;  in vthistory_seek()
119 		roffset = vb->vb_curroffset;  in vthistory_seek()
123 	diff = vb->vb_roffset != roffset;  in vthistory_seek()
124 	vb->vb_roffset = roffset;  in vthistory_seek()
130 vthistory_addlines(struct vt_buf *vb, int offset)  in vthistory_addlines()  argument
136 	vb->vb_curroffset += offset;  in vthistory_addlines()
137 	if (vb->vb_curroffset + vb->vb_scr_size.tp_row >= vb->vb_history_size) {  in vthistory_addlines()
138 		vb->vb_flags |= VBF_HISTORY_FULL;  in vthistory_addlines()
139 		vb->vb_curroffset %= vb->vb_history_size;  in vthistory_addlines()
141 	if ((vb->vb_flags & VBF_SCROLL) == 0) {  in vthistory_addlines()
142 		vb->vb_roffset = vb->vb_curroffset;  in vthistory_addlines()
146 	sz = vb->vb_history_size;  in vthistory_addlines()
147 	cur = vb->vb_roffset + vb->vb_scr_size.tp_row + sz - 1;  in vthistory_addlines()
148 	if (vtbuf_in_this_range(cur, vb->vb_mark_start.tp_row, cur + offset, sz) ||  in vthistory_addlines()
149 	    vtbuf_in_this_range(cur, vb->vb_mark_end.tp_row, cur + offset, sz)) {  in vthistory_addlines()
151 		vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row;  in vthistory_addlines()
152 		vb->vb_mark_start.tp_col = vb->vb_mark_end.tp_col;  in vthistory_addlines()
158 vthistory_getpos(const struct vt_buf *vb, unsigned int *offset)  in vthistory_getpos()  argument
161 	*offset = vb->vb_roffset;  in vthistory_getpos()
167 vtbuf_htw(const struct vt_buf *vb, int row)  in vtbuf_htw()  argument
176 	return ((row - vb->vb_roffset + vb->vb_history_size) %  in vtbuf_htw()
177 	    vb->vb_history_size);  in vtbuf_htw()
182 vtbuf_wth(const struct vt_buf *vb, int row)  in vtbuf_wth()  argument
185 	return ((vb->vb_roffset + row) % vb->vb_history_size);  in vtbuf_wth()
212 vtbuf_iscursor(const struct vt_buf *vb, int row, int col)  in vtbuf_iscursor()  argument
218 	if ((vb->vb_flags & (VBF_CURSOR|VBF_SCROLL)) == VBF_CURSOR &&  in vtbuf_iscursor()
219 	    (vb->vb_cursor.tp_row == row) && (vb->vb_cursor.tp_col == col))  in vtbuf_iscursor()
224 	if (vb->vb_mark_start.tp_col == vb->vb_mark_end.tp_col &&  in vtbuf_iscursor()
225 	    vb->vb_mark_start.tp_row == vb->vb_mark_end.tp_row)  in vtbuf_iscursor()
228 	sc = vb->vb_mark_start.tp_col;  in vtbuf_iscursor()
229 	sr = vb->vb_mark_start.tp_row;  in vtbuf_iscursor()
230 	ec = vb->vb_mark_end.tp_col;  in vtbuf_iscursor()
231 	er = vb->vb_mark_end.tp_row;  in vtbuf_iscursor()
238 	sz = vb->vb_history_size;  in vtbuf_iscursor()
240 	row = vtbuf_wth(vb, row);  in vtbuf_iscursor()
257 vtbuf_lock(struct vt_buf *vb)  in vtbuf_lock()  argument
260 	VTBUF_LOCK(vb);  in vtbuf_lock()
264 vtbuf_unlock(struct vt_buf *vb)  in vtbuf_unlock()  argument
267 	VTBUF_UNLOCK(vb);  in vtbuf_unlock()
271 vtbuf_dirty(struct vt_buf *vb, const term_rect_t *area)  in vtbuf_dirty()  argument
274 	if (vb->vb_dirtyrect.tr_begin.tp_row > area->tr_begin.tp_row)  in vtbuf_dirty()
275 		vb->vb_dirtyrect.tr_begin.tp_row = area->tr_begin.tp_row;  in vtbuf_dirty()
276 	if (vb->vb_dirtyrect.tr_begin.tp_col > area->tr_begin.tp_col)  in vtbuf_dirty()
277 		vb->vb_dirtyrect.tr_begin.tp_col = area->tr_begin.tp_col;  in vtbuf_dirty()
278 	if (vb->vb_dirtyrect.tr_end.tp_row < area->tr_end.tp_row)  in vtbuf_dirty()
279 		vb->vb_dirtyrect.tr_end.tp_row = area->tr_end.tp_row;  in vtbuf_dirty()
280 	if (vb->vb_dirtyrect.tr_end.tp_col < area->tr_end.tp_col)  in vtbuf_dirty()
281 		vb->vb_dirtyrect.tr_end.tp_col = area->tr_end.tp_col;  in vtbuf_dirty()
285 vtbuf_dirty_cell(struct vt_buf *vb, const term_pos_t *p)  in vtbuf_dirty_cell()  argument
292 	vtbuf_dirty(vb, &area);  in vtbuf_dirty_cell()
296 vtbuf_make_undirty(struct vt_buf *vb)  in vtbuf_make_undirty()  argument
299 	vb->vb_dirtyrect.tr_begin = vb->vb_scr_size;  in vtbuf_make_undirty()
300 	vb->vb_dirtyrect.tr_end.tp_row = vb->vb_dirtyrect.tr_end.tp_col = 0;  in vtbuf_make_undirty()
304 vtbuf_undirty(struct vt_buf *vb, term_rect_t *r)  in vtbuf_undirty()  argument
307 	*r = vb->vb_dirtyrect;  in vtbuf_undirty()
308 	vtbuf_make_undirty(vb);  in vtbuf_undirty()
312 vtbuf_copy(struct vt_buf *vb, const term_rect_t *r, const term_pos_t *p2)  in vtbuf_copy()  argument
319 	KASSERT(r->tr_begin.tp_row < vb->vb_scr_size.tp_row,  in vtbuf_copy()
321 		r->tr_begin.tp_row, vb->vb_scr_size.tp_row));  in vtbuf_copy()
322 	KASSERT(r->tr_begin.tp_col < vb->vb_scr_size.tp_col,  in vtbuf_copy()
324 		r->tr_begin.tp_col, vb->vb_scr_size.tp_col));  in vtbuf_copy()
326 	KASSERT(r->tr_end.tp_row <= vb->vb_scr_size.tp_row,  in vtbuf_copy()
328 		r->tr_end.tp_row, vb->vb_scr_size.tp_row));  in vtbuf_copy()
329 	KASSERT(r->tr_end.tp_col <= vb->vb_scr_size.tp_col,  in vtbuf_copy()
331 		r->tr_end.tp_col, vb->vb_scr_size.tp_col));  in vtbuf_copy()
333 	KASSERT(p2->tp_row < vb->vb_scr_size.tp_row,  in vtbuf_copy()
335 		p2->tp_row, vb->vb_scr_size.tp_row));  in vtbuf_copy()
336 	KASSERT(p2->tp_col < vb->vb_scr_size.tp_col,  in vtbuf_copy()
338 		p2->tp_col, vb->vb_scr_size.tp_col));  in vtbuf_copy()
344 	    r->tr_end.tp_col == vb->vb_scr_size.tp_col && /* Full row. */  in vtbuf_copy()
345 	    (rows + rdiff) == vb->vb_scr_size.tp_row && /* Whole screen. */  in vtbuf_copy()
347 		vthistory_addlines(vb, rdiff);  in vtbuf_copy()
353 			    &VTBUF_FIELD(vb, p2->tp_row + pr, p2->tp_col),  in vtbuf_copy()
354 			    &VTBUF_FIELD(vb, p1->tp_row + pr, p1->tp_col),  in vtbuf_copy()
360 			    &VTBUF_FIELD(vb, p2->tp_row + pr, p2->tp_col),  in vtbuf_copy()
361 			    &VTBUF_FIELD(vb, p1->tp_row + pr, p1->tp_col),  in vtbuf_copy()
366 	area.tr_end.tp_row = MIN(p2->tp_row + rows, vb->vb_scr_size.tp_row);  in vtbuf_copy()
367 	area.tr_end.tp_col = MIN(p2->tp_col + cols, vb->vb_scr_size.tp_col);  in vtbuf_copy()
368 	vtbuf_dirty(vb, &area);  in vtbuf_copy()
372 vtbuf_do_fill(struct vt_buf *vb, const term_rect_t *r, term_char_t c)  in vtbuf_do_fill()  argument
378 		row = vb->vb_rows[(vb->vb_curroffset + pr) %  in vtbuf_do_fill()
379 		    VTBUF_MAX_HEIGHT(vb)];  in vtbuf_do_fill()
387 vtbuf_fill(struct vt_buf *vb, const term_rect_t *r, term_char_t c)  in vtbuf_fill()  argument
390 	KASSERT(r->tr_begin.tp_row < vb->vb_scr_size.tp_row,  in vtbuf_fill()
392 		r->tr_begin.tp_row, vb->vb_scr_size.tp_row));  in vtbuf_fill()
393 	KASSERT(r->tr_begin.tp_col < vb->vb_scr_size.tp_col,  in vtbuf_fill()
395 		r->tr_begin.tp_col, vb->vb_scr_size.tp_col));  in vtbuf_fill()
397 	KASSERT(r->tr_end.tp_row <= vb->vb_scr_size.tp_row,  in vtbuf_fill()
399 		r->tr_end.tp_row, vb->vb_scr_size.tp_row));  in vtbuf_fill()
400 	KASSERT(r->tr_end.tp_col <= vb->vb_scr_size.tp_col,  in vtbuf_fill()
402 		r->tr_end.tp_col, vb->vb_scr_size.tp_col));  in vtbuf_fill()
404 	vtbuf_do_fill(vb, r, c);  in vtbuf_fill()
405 	vtbuf_dirty(vb, r);  in vtbuf_fill()
409 vtbuf_init_rows(struct vt_buf *vb)  in vtbuf_init_rows()  argument
413 	vb->vb_history_size = MAX(vb->vb_history_size, vb->vb_scr_size.tp_row);  in vtbuf_init_rows()
415 	for (r = 0; r < vb->vb_history_size; r++)  in vtbuf_init_rows()
416 		vb->vb_rows[r] = &vb->vb_buffer[r * vb->vb_scr_size.tp_col];  in vtbuf_init_rows()
420 vtbuf_init_early(struct vt_buf *vb)  in vtbuf_init_early()  argument
424 	vb->vb_flags |= VBF_CURSOR;  in vtbuf_init_early()
425 	vb->vb_roffset = 0;  in vtbuf_init_early()
426 	vb->vb_curroffset = 0;  in vtbuf_init_early()
427 	vb->vb_mark_start.tp_row = 0;  in vtbuf_init_early()
428 	vb->vb_mark_start.tp_col = 0;  in vtbuf_init_early()
429 	vb->vb_mark_end.tp_row = 0;  in vtbuf_init_early()
430 	vb->vb_mark_end.tp_col = 0;  in vtbuf_init_early()
432 	vtbuf_init_rows(vb);  in vtbuf_init_early()
434 	rect.tr_end.tp_col = vb->vb_scr_size.tp_col;  in vtbuf_init_early()
435 	rect.tr_end.tp_row = vb->vb_history_size;  in vtbuf_init_early()
436 	vtbuf_do_fill(vb, &rect, VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR));  in vtbuf_init_early()
437 	vtbuf_make_undirty(vb);  in vtbuf_init_early()
438 	if ((vb->vb_flags & VBF_MTX_INIT) == 0) {  in vtbuf_init_early()
439 		mtx_init(&vb->vb_lock, "vtbuf", NULL, MTX_SPIN);  in vtbuf_init_early()
440 		vb->vb_flags |= VBF_MTX_INIT;  in vtbuf_init_early()
445 vtbuf_init(struct vt_buf *vb, const term_pos_t *p)  in vtbuf_init()  argument
449 	vb->vb_scr_size = *p;  in vtbuf_init()
450 	vb->vb_history_size = VBF_DEFAULT_HISTORY_SIZE;  in vtbuf_init()
452 	if ((vb->vb_flags & VBF_STATIC) == 0) {  in vtbuf_init()
453 		sz = vb->vb_history_size * p->tp_col * sizeof(term_char_t);  in vtbuf_init()
454 		vb->vb_buffer = malloc(sz, M_VTBUF, M_WAITOK | M_ZERO);  in vtbuf_init()
456 		sz = vb->vb_history_size * sizeof(term_char_t *);  in vtbuf_init()
457 		vb->vb_rows = malloc(sz, M_VTBUF, M_WAITOK | M_ZERO);  in vtbuf_init()
460 	vtbuf_init_early(vb);  in vtbuf_init()
464 vtbuf_sethistory_size(struct vt_buf *vb, unsigned int size)  in vtbuf_sethistory_size()  argument
469 	p.tp_row = vb->vb_scr_size.tp_row;  in vtbuf_sethistory_size()
470 	p.tp_col = vb->vb_scr_size.tp_col;  in vtbuf_sethistory_size()
471 	vtbuf_grow(vb, &p, size);  in vtbuf_sethistory_size()
475 vtbuf_grow(struct vt_buf *vb, const term_pos_t *p, unsigned int history_size)  in vtbuf_grow()  argument
491 	VTBUF_LOCK(vb);  in vtbuf_grow()
492 	old = vb->vb_flags & VBF_STATIC ? NULL : vb->vb_buffer;  in vtbuf_grow()
493 	oldrows = vb->vb_flags & VBF_STATIC ? NULL : vb->vb_rows;  in vtbuf_grow()
494 	copyrows = vb->vb_rows;  in vtbuf_grow()
496 	w = vb->vb_scr_size.tp_col;  in vtbuf_grow()
497 	h = vb->vb_scr_size.tp_row;  in vtbuf_grow()
498 	old_history_size = vb->vb_history_size;  in vtbuf_grow()
499 	history_full = vb->vb_flags & VBF_HISTORY_FULL ||  in vtbuf_grow()
500 	    vb->vb_curroffset + h >= history_size;  in vtbuf_grow()
502 	vb->vb_history_size = history_size;  in vtbuf_grow()
503 	vb->vb_buffer = new;  in vtbuf_grow()
504 	vb->vb_rows = rows;  in vtbuf_grow()
505 	vb->vb_flags &= ~VBF_STATIC;  in vtbuf_grow()
506 	vb->vb_scr_size = *p;  in vtbuf_grow()
507 	vtbuf_init_rows(vb);  in vtbuf_grow()
527 				    (vb->vb_curroffset + h + r) %  in vtbuf_grow()
559 		vb->vb_flags &= ~VBF_HISTORY_FULL;  in vtbuf_grow()
572 			vb->vb_curroffset = old_history_size - h;  in vtbuf_grow()
589 				    (vb->vb_curroffset + h + r +  in vtbuf_grow()
609 			vb->vb_curroffset = history_size - h;  in vtbuf_grow()
610 			vb->vb_flags |= VBF_HISTORY_FULL;  in vtbuf_grow()
614 	vb->vb_roffset = vb->vb_curroffset;  in vtbuf_grow()
617 	if (vb->vb_cursor.tp_col > p->tp_col - 1)  in vtbuf_grow()
622 		vb->vb_cursor.tp_col = p->tp_col - 1;  in vtbuf_grow()
624 	if (vb->vb_curroffset > 0 || vb->vb_cursor.tp_row > p->tp_row - 1)  in vtbuf_grow()
626 		vb->vb_cursor.tp_row = p->tp_row - 1;  in vtbuf_grow()
628 	VTBUF_UNLOCK(vb);  in vtbuf_grow()
636 vtbuf_putchar(struct vt_buf *vb, const term_pos_t *p, term_char_t c)  in vtbuf_putchar()  argument
640 	KASSERT(p->tp_row < vb->vb_scr_size.tp_row,  in vtbuf_putchar()
642 		p->tp_row, vb->vb_scr_size.tp_row));  in vtbuf_putchar()
643 	KASSERT(p->tp_col < vb->vb_scr_size.tp_col,  in vtbuf_putchar()
645 		p->tp_col, vb->vb_scr_size.tp_col));  in vtbuf_putchar()
647 	row = vb->vb_rows[(vb->vb_curroffset + p->tp_row) %  in vtbuf_putchar()
648 	    VTBUF_MAX_HEIGHT(vb)];  in vtbuf_putchar()
651 		vtbuf_dirty_cell(vb, p);  in vtbuf_putchar()
656 vtbuf_cursor_position(struct vt_buf *vb, const term_pos_t *p)  in vtbuf_cursor_position()  argument
658 	if (vb->vb_flags & VBF_CURSOR) {  in vtbuf_cursor_position()
659 		vtbuf_dirty_cell(vb, &vb->vb_cursor);  in vtbuf_cursor_position()
660 		vb->vb_cursor = *p;  in vtbuf_cursor_position()
661 		vtbuf_dirty_cell(vb, &vb->vb_cursor);  in vtbuf_cursor_position()
663 		vb->vb_cursor = *p;  in vtbuf_cursor_position()
669 vtbuf_flush_mark(struct vt_buf *vb)  in vtbuf_flush_mark()  argument
675 	if ((vb->vb_mark_start.tp_col != vb->vb_mark_end.tp_col) ||  in vtbuf_flush_mark()
676 	    (vb->vb_mark_start.tp_row != vb->vb_mark_end.tp_row)) {  in vtbuf_flush_mark()
678 		s = vtbuf_htw(vb, vb->vb_mark_start.tp_row);  in vtbuf_flush_mark()
679 		e = vtbuf_htw(vb, vb->vb_mark_end.tp_row);  in vtbuf_flush_mark()
684 		area.tr_end.tp_col = vb->vb_scr_size.tp_col;  in vtbuf_flush_mark()
687 		VTBUF_LOCK(vb);  in vtbuf_flush_mark()
688 		vtbuf_dirty(vb, &area);  in vtbuf_flush_mark()
689 		VTBUF_UNLOCK(vb);  in vtbuf_flush_mark()
694 vtbuf_get_marked_len(struct vt_buf *vb)  in vtbuf_get_marked_len()  argument
700 	if (POS_INDEX(vtbuf_htw(vb, vb->vb_mark_start.tp_row),  in vtbuf_get_marked_len()
701 	    vb->vb_mark_start.tp_col) >  in vtbuf_get_marked_len()
702 	    POS_INDEX(vtbuf_htw(vb, vb->vb_mark_end.tp_row),  in vtbuf_get_marked_len()
703 	    vb->vb_mark_end.tp_col)) {  in vtbuf_get_marked_len()
704 		POS_COPY(e, vb->vb_mark_start);  in vtbuf_get_marked_len()
705 		POS_COPY(s, vb->vb_mark_end);  in vtbuf_get_marked_len()
707 		POS_COPY(s, vb->vb_mark_start);  in vtbuf_get_marked_len()
708 		POS_COPY(e, vb->vb_mark_end);  in vtbuf_get_marked_len()
711 	si = s.tp_row * vb->vb_scr_size.tp_col + s.tp_col;  in vtbuf_get_marked_len()
712 	ei = e.tp_row * vb->vb_scr_size.tp_col + e.tp_col;  in vtbuf_get_marked_len()
721 vtbuf_extract_marked(struct vt_buf *vb, term_char_t *buf, int sz)  in vtbuf_extract_marked()  argument
727 	if (POS_INDEX(vtbuf_htw(vb, vb->vb_mark_start.tp_row),  in vtbuf_extract_marked()
728 	    vb->vb_mark_start.tp_col) >  in vtbuf_extract_marked()
729 	    POS_INDEX(vtbuf_htw(vb, vb->vb_mark_end.tp_row),  in vtbuf_extract_marked()
730 	    vb->vb_mark_end.tp_col)) {  in vtbuf_extract_marked()
731 		POS_COPY(e, vb->vb_mark_start);  in vtbuf_extract_marked()
732 		POS_COPY(s, vb->vb_mark_end);  in vtbuf_extract_marked()
734 		POS_COPY(s, vb->vb_mark_start);  in vtbuf_extract_marked()
735 		POS_COPY(e, vb->vb_mark_end);  in vtbuf_extract_marked()
741 		ce = (r == e.tp_row)?e.tp_col:vb->vb_scr_size.tp_col;  in vtbuf_extract_marked()
743 			buf[i++] = vb->vb_rows[r][c];  in vtbuf_extract_marked()
754 vtbuf_set_mark(struct vt_buf *vb, int type, int col, int row)  in vtbuf_set_mark()  argument
761 		if (vb->vb_mark_last != VTB_MARK_MOVE)  in vtbuf_set_mark()
766 		vtbuf_flush_mark(vb); /* Clean old mark. */  in vtbuf_set_mark()
767 		vb->vb_mark_end.tp_col = col;  in vtbuf_set_mark()
768 		vb->vb_mark_end.tp_row = vtbuf_wth(vb, row);  in vtbuf_set_mark()
771 		vtbuf_flush_mark(vb); /* Clean old mark. */  in vtbuf_set_mark()
772 		vb->vb_mark_start.tp_col = col;  in vtbuf_set_mark()
773 		vb->vb_mark_start.tp_row = vtbuf_wth(vb, row);  in vtbuf_set_mark()
775 		vb->vb_mark_end.tp_col = col;  in vtbuf_set_mark()
776 		vb->vb_mark_end.tp_row = vtbuf_wth(vb, row);  in vtbuf_set_mark()
779 		vtbuf_flush_mark(vb); /* Clean old mark. */  in vtbuf_set_mark()
780 		vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row =  in vtbuf_set_mark()
781 		    vtbuf_wth(vb, row);  in vtbuf_set_mark()
782 		r = vb->vb_rows[vb->vb_mark_start.tp_row];  in vtbuf_set_mark()
785 				vb->vb_mark_start.tp_col = i + 1;  in vtbuf_set_mark()
789 		for (i = col; i < vb->vb_scr_size.tp_col; i ++) {  in vtbuf_set_mark()
791 				vb->vb_mark_end.tp_col = i;  in vtbuf_set_mark()
795 		if (vb->vb_mark_start.tp_col > vb->vb_mark_end.tp_col)  in vtbuf_set_mark()
796 			vb->vb_mark_start.tp_col = vb->vb_mark_end.tp_col;  in vtbuf_set_mark()
799 		vtbuf_flush_mark(vb); /* Clean old mark. */  in vtbuf_set_mark()
800 		vb->vb_mark_start.tp_col = 0;  in vtbuf_set_mark()
801 		vb->vb_mark_end.tp_col = vb->vb_scr_size.tp_col;  in vtbuf_set_mark()
802 		vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row =  in vtbuf_set_mark()
803 		    vtbuf_wth(vb, row);  in vtbuf_set_mark()
806 		vb->vb_mark_last = type;  in vtbuf_set_mark()
813 	vb->vb_mark_last = type;  in vtbuf_set_mark()
815 	vtbuf_flush_mark(vb);  in vtbuf_set_mark()
821 vtbuf_cursor_visibility(struct vt_buf *vb, int yes)  in vtbuf_cursor_visibility()  argument
825 	oflags = vb->vb_flags;  in vtbuf_cursor_visibility()
827 		vb->vb_flags |= VBF_CURSOR;  in vtbuf_cursor_visibility()
829 		vb->vb_flags &= ~VBF_CURSOR;  in vtbuf_cursor_visibility()
830 	nflags = vb->vb_flags;  in vtbuf_cursor_visibility()
833 		vtbuf_dirty_cell(vb, &vb->vb_cursor);  in vtbuf_cursor_visibility()
837 vtbuf_scroll_mode(struct vt_buf *vb, int yes)  in vtbuf_scroll_mode()  argument
841 	VTBUF_LOCK(vb);  in vtbuf_scroll_mode()
842 	oflags = vb->vb_flags;  in vtbuf_scroll_mode()
844 		vb->vb_flags |= VBF_SCROLL;  in vtbuf_scroll_mode()
846 		vb->vb_flags &= ~VBF_SCROLL;  in vtbuf_scroll_mode()
847 	nflags = vb->vb_flags;  in vtbuf_scroll_mode()
850 		vtbuf_dirty_cell(vb, &vb->vb_cursor);  in vtbuf_scroll_mode()
851 	VTBUF_UNLOCK(vb);  in vtbuf_scroll_mode()