moused related panic
Giorgos Keramidas
keramida at freebsd.org
Mon Sep 5 18:54:36 PDT 2005
On 2005-09-05 21:58, Slawa Olhovchenkov <slw at zxy.spb.ru> wrote:
> On Mon, Sep 05, 2005 at 12:27:13PM -0400, Craig Rodrigues wrote:
>
> > On Sat, Sep 03, 2005 at 04:33:44PM +0300, Giorgos Keramidas wrote:
> > > This was on a console running with 132x25 mode.
> >
> > Can you try this?
>
> 1. I think your remember '()' around '||'
> 2. Now mouse cursor not moved.
I think I've found why this seems broken in non-graphics VESA modes. In
vesa_ioctl(), the 132x25 text mode triggers (diff since August 30):
- return sc_set_text_mode(scp, tp, cmd & 0xff, 0, 0, 0);
+ return sc_set_text_mode(scp, tp, cmd & 0xff, 0, 0, 0, 0);
By calling sc_set_text_mode() with a font width of zero, scp->font_width is
then initialized to 0 and all set_mouse_pos() calls avoid running the patched
section:
> > - if (scp->mouse_xpos != scp->mouse_oldxpos || scp->mouse_ypos != scp->mouse_oldypos) {
> > + if (scp->mouse_xpos != scp->mouse_oldxpos || scp->mouse_ypos != scp->mouse_oldypos && scp->font_size != 0 && scp->font_width != 0) {
> > scp->status |= MOUSE_MOVED;
> > scp->mouse_pos =
> > (scp->mouse_ypos/scp->font_size - scp->yoff)*scp->xsize
The following patch fixes the movement of the cursor in VESA text modes and
avoids a panic in non-graphics VESA modes, by wrapping the graphics-specific
changes to the position of the cursor in ISGRAPHSC(scp) checks. The extra
KASSERT() is probably not necessary, but I'd vote for leaving it there anyway.
%%%
Index: scmouse.c
===================================================================
RCS file: /home/ncvs/src/sys/dev/syscons/scmouse.c,v
retrieving revision 1.38
diff -u -r1.38 scmouse.c
--- scmouse.c 30 Aug 2005 18:58:16 -0000 1.38
+++ scmouse.c 6 Sep 2005 01:51:08 -0000
@@ -140,9 +140,12 @@
static void
set_mouse_pos(scr_stat *scp)
{
- if (scp->mouse_xpos < scp->xoff*scp->font_width)
- scp->mouse_xpos = scp->xoff*scp->font_width;
- if (scp->mouse_ypos < scp->yoff*scp->font_size)
+
+ KASSERT(scp != NULL, ("null scp"));
+
+ if (scp->font_width != 0 && scp->mouse_xpos < scp->xoff * scp->font_width)
+ scp->mouse_xpos = scp->xoff * scp->font_width;
+ if (scp->font_size != 0 && scp->mouse_ypos < scp->yoff * scp->font_size)
scp->mouse_ypos = scp->yoff*scp->font_size;
if (ISGRAPHSC(scp)) {
if (scp->mouse_xpos > scp->xpixel-1)
@@ -151,17 +154,21 @@
scp->mouse_ypos = scp->ypixel-1;
return;
} else {
- if (scp->mouse_xpos > (scp->xsize + scp->xoff)*scp->font_width - 1)
- scp->mouse_xpos = (scp->xsize + scp->xoff)*scp->font_width - 1;
- if (scp->mouse_ypos > (scp->ysize + scp->yoff)*scp->font_size - 1)
- scp->mouse_ypos = (scp->ysize + scp->yoff)*scp->font_size - 1;
+ if (scp->font_width != 0 &&
+ scp->mouse_xpos > (scp->xsize + scp->xoff) * scp->font_width - 1)
+ scp->mouse_xpos = (scp->xsize + scp->xoff) * scp->font_width - 1;
+ if (scp->font_size != 0 &&
+ scp->mouse_ypos > (scp->ysize + scp->yoff) * scp->font_size - 1)
+ scp->mouse_ypos = (scp->ysize + scp->yoff) * scp->font_size - 1;
}
if (scp->mouse_xpos != scp->mouse_oldxpos || scp->mouse_ypos != scp->mouse_oldypos) {
scp->status |= MOUSE_MOVED;
- scp->mouse_pos =
- (scp->mouse_ypos/scp->font_size - scp->yoff)*scp->xsize
- + scp->mouse_xpos/scp->font_width - scp->xoff;
+ if (ISGRAPHSC(scp)) {
+ scp->mouse_pos =
+ (scp->mouse_ypos / scp->font_size - scp->yoff) * scp->xsize +
+ scp->mouse_xpos / scp->font_width - scp->xoff;
+ }
#ifndef SC_NO_CUTPASTE
if ((scp->status & MOUSE_VISIBLE) && (scp->status & MOUSE_CUTTING))
mouse_cut(scp);
%%%
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