lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:	Tue, 16 Sep 2014 12:40:26 -0400 (EDT)
From:	Mikulas Patocka <mpatocka@...hat.com>
To:	Tomi Valkeinen <tomi.valkeinen@...com>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>
cc:	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] framebuffer: fix border color

The framebuffer code uses the current background color to fill the border
when switching consoles, however, this results in inconsistent behavior.
For example:
- start Midnigh Commander
- the border is black
- switch to another console and switch back
- the border is cyan
- type something into the command line in mc
- the border is cyan
- switch to another console and switch back
- the border is black
- press F9 to go to menu
- the border is black
- switch to another console and switch back
- the border is dark blue

When switching to a console with Midnight Commander, the border is random
color that was left selected by the slang subsystem.

This patch fixes this inconsistency by always using black as the
background color when switching consoles.

Signed-off-by: Mikulas Patocka <mpatocka@...hat.com>
Cc: stable@...r.kernel.org

---
 drivers/video/console/bitblit.c   |    3 +--
 drivers/video/console/fbcon_ccw.c |    3 +--
 drivers/video/console/fbcon_cw.c  |    3 +--
 drivers/video/console/fbcon_ud.c  |    3 +--
 4 files changed, 4 insertions(+), 8 deletions(-)

Index: linux-3.14.18/drivers/video/console/bitblit.c
===================================================================
--- linux-3.14.18.orig/drivers/video/console/bitblit.c	2014-09-16 00:15:21.622812568 +0200
+++ linux-3.14.18/drivers/video/console/bitblit.c	2014-09-16 00:16:00.447137568 +0200
@@ -205,7 +205,6 @@ static void bit_putcs(struct vc_data *vc
 static void bit_clear_margins(struct vc_data *vc, struct fb_info *info,
 			      int bottom_only)
 {
-	int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
 	unsigned int cw = vc->vc_font.width;
 	unsigned int ch = vc->vc_font.height;
 	unsigned int rw = info->var.xres - (vc->vc_cols*cw);
@@ -214,7 +213,7 @@ static void bit_clear_margins(struct vc_
 	unsigned int bs = info->var.yres - bh;
 	struct fb_fillrect region;
 
-	region.color = attr_bgcol_ec(bgshift, vc, info);
+	region.color = 0;
 	region.rop = ROP_COPY;
 
 	if (rw && !bottom_only) {
Index: linux-3.14.18/drivers/video/console/fbcon_ccw.c
===================================================================
--- linux-3.14.18.orig/drivers/video/console/fbcon_ccw.c	2014-09-16 00:15:21.619479721 +0200
+++ linux-3.14.18/drivers/video/console/fbcon_ccw.c	2014-09-16 00:16:00.450470414 +0200
@@ -197,9 +197,8 @@ static void ccw_clear_margins(struct vc_
 	unsigned int bh = info->var.xres - (vc->vc_rows*ch);
 	unsigned int bs = vc->vc_rows*ch;
 	struct fb_fillrect region;
-	int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
 
-	region.color = attr_bgcol_ec(bgshift,vc,info);
+	region.color = 0;
 	region.rop = ROP_COPY;
 
 	if (rw && !bottom_only) {
Index: linux-3.14.18/drivers/video/console/fbcon_cw.c
===================================================================
--- linux-3.14.18.orig/drivers/video/console/fbcon_cw.c	2014-09-16 00:15:21.622812568 +0200
+++ linux-3.14.18/drivers/video/console/fbcon_cw.c	2014-09-16 00:16:00.450470414 +0200
@@ -180,9 +180,8 @@ static void cw_clear_margins(struct vc_d
 	unsigned int bh = info->var.xres - (vc->vc_rows*ch);
 	unsigned int rs = info->var.yres - rw;
 	struct fb_fillrect region;
-	int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
 
-	region.color = attr_bgcol_ec(bgshift,vc,info);
+	region.color = 0;
 	region.rop = ROP_COPY;
 
 	if (rw && !bottom_only) {
Index: linux-3.14.18/drivers/video/console/fbcon_ud.c
===================================================================
--- linux-3.14.18.orig/drivers/video/console/fbcon_ud.c	2014-09-16 00:15:21.622812568 +0200
+++ linux-3.14.18/drivers/video/console/fbcon_ud.c	2014-09-16 00:16:00.453803261 +0200
@@ -227,9 +227,8 @@ static void ud_clear_margins(struct vc_d
 	unsigned int rw = info->var.xres - (vc->vc_cols*cw);
 	unsigned int bh = info->var.yres - (vc->vc_rows*ch);
 	struct fb_fillrect region;
-	int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
 
-	region.color = attr_bgcol_ec(bgshift,vc,info);
+	region.color = 0;
 	region.rop = ROP_COPY;
 
 	if (rw && !bottom_only) {
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ