Messages in this thread Patch in this message | | | From | Petr Písař <> | Subject | [PATCH] vt: Fix secure clear screen | Date | Thu, 6 Feb 2014 21:01:23 +0100 |
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\E[3J console code (secure clear screen) needs to update_screen(vc) in order to write-through blanks into off-screen video memory.
This has been removed accidentally in 3.6 by:
commit 81732c3b2fede049a692e58a7ceabb6d18ffb18c Author: Jean-François Moine <moinejf@free.fr> Date: Thu Sep 6 19:24:13 2012 +0200
tty vt: Fix line garbage in virtual console on command line edition
Signed-off-by: Petr Písař <petr.pisar@atlas.cz> --- drivers/tty/vt/vt.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 61b1137..23b5d32 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -1164,6 +1164,8 @@ static void csi_J(struct vc_data *vc, int vpar) scr_memsetw(vc->vc_screenbuf, vc->vc_video_erase_char, vc->vc_screenbuf_size >> 1); set_origin(vc); + if (CON_IS_VISIBLE(vc)) + update_screen(vc); /* fall through */ case 2: /* erase whole display */ count = vc->vc_cols * vc->vc_rows; -- 1.8.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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