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authorJan Engelhardt <jengelh@computergmbh.de>2008-04-29 00:59:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-29 08:06:06 -0700
commitc9e587abfdec2c2aaa55fab83bcb4972e2f84f9b (patch)
tree86ab335b702608c90e9ce3dd759c1c96247a60d5 /drivers/video
parent3265e66b1825942c6e0fc457986cdf941a5f7d37 (diff)
vt: fix background color on line feed
A command that causes a line feed while a background color is active, such as perl -e 'print "x" x 60, "\e[44m", "x" x 40, "\e[0m\n"' and perl -e 'print "x" x 40, "\e[44m\n", "x" x 40, "\e[0m\n"' causes the line that was started as a result of the line feed to be completely filled with the currently active background color instead of the default color. When scrolling, part of the current screen is memcpy'd/memmove'd to the new region, and the new line(s) that will appear as a result are cleared using memset. However, the lines are cleared with vc->vc_video_erase_char, causing them to be colored with the currently active background color. This is different from X11 terminal emulators which always paint the new lines with the default background color (e.g. `xterm -bg black`). The clear operation (\e[1J and \e[2J) also use vc_video_erase_char, so a new vc->vc_scrl_erase_char is introduced with contains the erase character used for scrolling, which is built from vc->vc_def_color instead of vc->vc_color. Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/console/fbcon.c8
-rw-r--r--drivers/video/console/mdacon.c2
-rw-r--r--drivers/video/console/sticon.c4
-rw-r--r--drivers/video/console/vgacon.c4
4 files changed, 9 insertions, 9 deletions
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 8eda7b60df8..ad31983b43e 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -1881,7 +1881,7 @@ static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
scr_memsetw((unsigned short *) (vc->vc_origin +
vc->vc_size_row *
(b - count)),
- vc->vc_video_erase_char,
+ vc->vc_scrl_erase_char,
vc->vc_size_row * count);
return 1;
break;
@@ -1953,7 +1953,7 @@ static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
scr_memsetw((unsigned short *) (vc->vc_origin +
vc->vc_size_row *
(b - count)),
- vc->vc_video_erase_char,
+ vc->vc_scrl_erase_char,
vc->vc_size_row * count);
return 1;
}
@@ -1972,7 +1972,7 @@ static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
scr_memsetw((unsigned short *) (vc->vc_origin +
vc->vc_size_row *
t),
- vc->vc_video_erase_char,
+ vc->vc_scrl_erase_char,
vc->vc_size_row * count);
return 1;
break;
@@ -2042,7 +2042,7 @@ static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
scr_memsetw((unsigned short *) (vc->vc_origin +
vc->vc_size_row *
t),
- vc->vc_video_erase_char,
+ vc->vc_scrl_erase_char,
vc->vc_size_row * count);
return 1;
}
diff --git a/drivers/video/console/mdacon.c b/drivers/video/console/mdacon.c
index bd8d995fe25..38a296bbdfc 100644
--- a/drivers/video/console/mdacon.c
+++ b/drivers/video/console/mdacon.c
@@ -531,7 +531,7 @@ static void mdacon_cursor(struct vc_data *c, int mode)
static int mdacon_scroll(struct vc_data *c, int t, int b, int dir, int lines)
{
- u16 eattr = mda_convert_attr(c->vc_video_erase_char);
+ u16 eattr = mda_convert_attr(c->vc_scrl_erase_char);
if (!lines)
return 0;
diff --git a/drivers/video/console/sticon.c b/drivers/video/console/sticon.c
index 67a682d6cc7..a11cc2fdd4c 100644
--- a/drivers/video/console/sticon.c
+++ b/drivers/video/console/sticon.c
@@ -170,12 +170,12 @@ static int sticon_scroll(struct vc_data *conp, int t, int b, int dir, int count)
switch (dir) {
case SM_UP:
sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols);
- sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_video_erase_char);
+ sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_scrl_erase_char);
break;
case SM_DOWN:
sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols);
- sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_video_erase_char);
+ sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_scrl_erase_char);
break;
}
diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
index 6df29a62d72..bd1f57b259d 100644
--- a/drivers/video/console/vgacon.c
+++ b/drivers/video/console/vgacon.c
@@ -1350,7 +1350,7 @@ static int vgacon_scroll(struct vc_data *c, int t, int b, int dir,
} else
c->vc_origin += delta;
scr_memsetw((u16 *) (c->vc_origin + c->vc_screenbuf_size -
- delta), c->vc_video_erase_char,
+ delta), c->vc_scrl_erase_char,
delta);
} else {
if (oldo - delta < vga_vram_base) {
@@ -1363,7 +1363,7 @@ static int vgacon_scroll(struct vc_data *c, int t, int b, int dir,
} else
c->vc_origin -= delta;
c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size;
- scr_memsetw((u16 *) (c->vc_origin), c->vc_video_erase_char,
+ scr_memsetw((u16 *) (c->vc_origin), c->vc_scrl_erase_char,
delta);
}
c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size;