/* 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 wait_queue wait = { current, NULL };
char *bp = sel_buffer;
int c = sel_buffer_lth;
int l;
struct vt_struct *vt = (struct vt_struct *) tty->driver_data;
if (!bp || !c)
return 0;
do_unblank_screen();
current->state = TASK_INTERRUPTIBLE;
add_wait_queue(&vt->paste_wait, &wait);
while (c) {
if (test_bit(TTY_THROTTLED, &tty->flags)) {
schedule();
continue;
}
l = MIN(c, tty->ldisc.receive_room(tty));
tty->ldisc.receive_buf(tty, bp, 0, l);
c -= l;
bp += l;
}
current->state = TASK_RUNNING;
return 0;
}
NORET_TYPE void panic(const char * fmt, ...)
{
static char buf[1024];
va_list args;
int i;
va_start(args, fmt);
vsprintf(buf, fmt, args);
va_end(args);
printk(KERN_EMERG "Kernel panic: %s\n",buf);
if (current == task[0])
printk(KERN_EMERG "In swapper task - not syncing\n");
else
sys_sync();
do_unblank_screen();
if (panic_timeout > 0)
{
/*
* Delay timeout seconds before rebooting the machine.
* We can't use the "normal" timers since we just panicked..
*/
printk(KERN_EMERG "Rebooting in %d seconds..",panic_timeout);
for(i = 0; i < (panic_timeout*1000); i++)
udelay(1000);
hard_reset_now();
}
for(;;);
}
static void SAK(void)
{
do_SAK(tty);
#if 0
/*
* Need to fix SAK handling to fix up RAW/MEDIUM_RAW and
* vt_cons modes before we can enable RAW/MEDIUM_RAW SAK
* handling.
*
* We should do this some day --- the whole point of a secure
* attention key is that it should be guaranteed to always
* work.
*/
reset_vc(fg_console);
do_unblank_screen(); /* not in interrupt routine? */
#endif
}
/* set the current selection. Invoked by ioctl() or by kernel code. */
int set_selection(const unsigned long arg, struct tty_struct *tty, int user)
{
int sel_mode, new_sel_start, new_sel_end, spc;
char *bp, *obp;
int i, ps, pe;
do_unblank_screen();
{ unsigned short *args, xs, ys, xe, ye;
args = (unsigned short *)(arg + 1);
if (user) {
int err;
err = verify_area(VERIFY_READ, args, sizeof(short) * 5);
if (err)
return err;
xs = get_user(args++) - 1;
ys = get_user(args++) - 1;
xe = get_user(args++) - 1;
ye = get_user(args++) - 1;
sel_mode = get_user(args);
} else {
xs = *(args++) - 1; /* set selection from kernel */
ys = *(args++) - 1;
xe = *(args++) - 1;
ye = *(args++) - 1;
sel_mode = *args;
}
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 == 4) {
/* useful for screendump without selection highlights */
clear_selection();
return 0;
}
if (mouse_reporting() && (sel_mode & 16)) {
mouse_report(tty, sel_mode & 15, 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 0: /* character-by-character selection */
new_sel_start = ps;
new_sel_end = pe;
break;
case 1: /* 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 2: /* 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 3:
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) && isspace(sel_pos(new_sel_end))) {
for (pe = new_sel_end + 2; ; pe += 2)
if (!isspace(sel_pos(pe)) || atedge(pe))
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;
if (sel_buffer)
kfree(sel_buffer);
sel_buffer = kmalloc((sel_end-sel_start)/2+1, GFP_KERNEL);
if (!sel_buffer) {
printk("selection: kmalloc() failed\n");
clear_selection();
return -ENOMEM;
}
obp = bp = sel_buffer;
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;
}
