/* Insert the contents of the selection buffer into the * queue of the tty associated with the current console. * Invoked by ioctl(). */ int paste_selection(struct tty_struct *tty) { struct vt_struct *vt = (struct vt_struct *) tty->driver_data; int pasted = 0, count; DECLARE_WAITQUEUE(wait, current); acquire_console_sem(); poke_blanked_console(); release_console_sem(); add_wait_queue(&vt->paste_wait, &wait); while (sel_buffer && sel_buffer_lth > pasted) { set_current_state(TASK_INTERRUPTIBLE); if (test_bit(TTY_THROTTLED, &tty->flags)) { schedule(); continue; } count = sel_buffer_lth - pasted; count = MIN(count, tty->ldisc.receive_room(tty)); tty->ldisc.receive_buf(tty, sel_buffer + pasted, 0, count); pasted += count; } remove_wait_queue(&vt->paste_wait, &wait); current->state = TASK_RUNNING; return 0; }
/* Insert the contents of the selection buffer into the * queue of the tty associated with the current console. * Invoked by ioctl(). */ int paste_selection(struct tty_struct *tty) { struct vc_data *vc = (struct vc_data *)tty->driver_data; int pasted = 0; unsigned int count; struct tty_ldisc *ld; DECLARE_WAITQUEUE(wait, current); acquire_console_sem(); poke_blanked_console(); release_console_sem(); ld = tty_ldisc_ref_wait(tty); add_wait_queue(&vc->paste_wait, &wait); while (sel_buffer && sel_buffer_lth > pasted) { set_current_state(TASK_INTERRUPTIBLE); if (test_bit(TTY_THROTTLED, &tty->flags)) { schedule(); continue; } count = sel_buffer_lth - pasted; count = min(count, tty->receive_room); tty->ldisc.receive_buf(tty, sel_buffer + pasted, NULL, count); pasted += count; } remove_wait_queue(&vc->paste_wait, &wait); current->state = TASK_RUNNING; tty_ldisc_deref(ld); return 0; }
/* * This routine is the bottom half of the keyboard interrupt * routine, and runs with all interrupts enabled. It does * console changing, led setting and copy_to_cooked, which can * take a reasonably long time. * * Aside from timing (which isn't really that important for * keyboard interrupts as they happen often), using the software * interrupt routines for this thing allows us to easily mask * this when we don't want any of the above to happen. Not yet * used, but this allows for easy and efficient race-condition * prevention later on. */ static void kbd_bh(void * unused) { static unsigned char old_leds = 0xff; unsigned char leds = kbd_table[fg_console].ledstate; if (leds != old_leds) { old_leds = leds; if (!send_data(0xed) || !send_data(leds)) send_data(0xf4); /* re-enable kbd if any errors */ } if (want_console >= 0) { if (want_console != fg_console) { last_console = fg_console; change_console(want_console); } want_console = -1; } poke_blanked_console(); cli(); if ((inb_p(0x64) & kbd_read_mask) == 0x01) fake_keyboard_interrupt(); sti(); }
/* set the current selection. Invoked by ioctl() or by kernel code. */ int set_selection(const struct tiocl_selection *sel, struct tty_struct *tty, int user) { int sel_mode, new_sel_start, new_sel_end, spc; char *bp, *obp; int i, ps, pe; unsigned int currcons = fg_console; poke_blanked_console(); { unsigned short xs, ys, xe, ye; if (user) { if (verify_area(VERIFY_READ, sel, sizeof(*sel))) return -EFAULT; __get_user(xs, &sel->xs); __get_user(ys, &sel->ys); __get_user(xe, &sel->xe); __get_user(ye, &sel->ye); __get_user(sel_mode, &sel->sel_mode); } else { xs = sel->xs; /* set selection from kernel */ ys = sel->ys; xe = sel->xe; ye = sel->ye; sel_mode = sel->sel_mode; } xs--; ys--; xe--; ye--; xs = limit(xs, video_num_columns - 1); ys = limit(ys, video_num_lines - 1); xe = limit(xe, video_num_columns - 1); ye = limit(ye, video_num_lines - 1); ps = ys * video_size_row + (xs << 1); pe = ye * video_size_row + (xe << 1); if (sel_mode == TIOCL_SELCLEAR) { /* useful for screendump without selection highlights */ clear_selection(); return 0; } if (mouse_reporting() && (sel_mode & TIOCL_SELMOUSEREPORT)) { mouse_report(tty, sel_mode & TIOCL_SELBUTTONMASK, xs, ys); return 0; } } if (ps > pe) /* make sel_start <= sel_end */ { int tmp = ps; ps = pe; pe = tmp; } if (sel_cons != fg_console) { clear_selection(); sel_cons = fg_console; } switch (sel_mode) { case TIOCL_SELCHAR: /* character-by-character selection */ new_sel_start = ps; new_sel_end = pe; break; case TIOCL_SELWORD: /* word-by-word selection */ spc = isspace(sel_pos(ps)); for (new_sel_start = ps; ; ps -= 2) { if ((spc && !isspace(sel_pos(ps))) || (!spc && !inword(sel_pos(ps)))) break; new_sel_start = ps; if (!(ps % video_size_row)) break; } spc = isspace(sel_pos(pe)); for (new_sel_end = pe; ; pe += 2) { if ((spc && !isspace(sel_pos(pe))) || (!spc && !inword(sel_pos(pe)))) break; new_sel_end = pe; if (!((pe + 2) % video_size_row)) break; } break; case TIOCL_SELLINE: /* line-by-line selection */ new_sel_start = ps - ps % video_size_row; new_sel_end = pe + video_size_row - pe % video_size_row - 2; break; case TIOCL_SELPOINTER: highlight_pointer(pe); return 0; default: return -EINVAL; } /* remove the pointer */ highlight_pointer(-1); /* select to end of line if on trailing space */ if (new_sel_end > new_sel_start && !atedge(new_sel_end, video_size_row) && isspace(sel_pos(new_sel_end))) { for (pe = new_sel_end + 2; ; pe += 2) if (!isspace(sel_pos(pe)) || atedge(pe, video_size_row)) break; if (isspace(sel_pos(pe))) new_sel_end = pe; } if (sel_start == -1) /* no current selection */ highlight(new_sel_start, new_sel_end); else if (new_sel_start == sel_start) { if (new_sel_end == sel_end) /* no action required */ return 0; else if (new_sel_end > sel_end) /* extend to right */ highlight(sel_end + 2, new_sel_end); else /* contract from right */ highlight(new_sel_end + 2, sel_end); } else if (new_sel_end == sel_end) { if (new_sel_start < sel_start) /* extend to left */ highlight(new_sel_start, sel_start - 2); else /* contract from left */ highlight(sel_start, new_sel_start - 2); } else /* some other case; start selection from scratch */ { clear_selection(); highlight(new_sel_start, new_sel_end); } sel_start = new_sel_start; sel_end = new_sel_end; /* Allocate a new buffer before freeing the old one ... */ bp = kmalloc((sel_end-sel_start)/2+1, GFP_KERNEL); if (!bp) { printk(KERN_WARNING "selection: kmalloc() failed\n"); clear_selection(); return -ENOMEM; } if (sel_buffer) kfree(sel_buffer); sel_buffer = bp; obp = bp; for (i = sel_start; i <= sel_end; i += 2) { *bp = sel_pos(i); if (!isspace(*bp++)) obp = bp; if (! ((i + 2) % video_size_row)) { /* strip trailing blanks from line and add newline, unless non-space at end of line. */ if (obp != bp) { bp = obp; *bp++ = '\r'; } obp = bp; } } sel_buffer_lth = bp - sel_buffer; return 0; }