Thread (49 messages) 49 messages, 7 authors, 2017-02-03

Re: [PATCH v10 3/4] console: Add persistent scrollback buffers for all VGA consoles

From: Greg KH <gregkh@linuxfoundation.org>
Date: 2017-01-20 13:31:46
Also in: lkml

On Fri, Jan 20, 2017 at 02:16:11PM +0100, Adam Borowski wrote:
On Fri, Jan 20, 2017 at 12:04:12AM +0100, Adam Borowski wrote:
quoted
On Thu, Jan 19, 2017 at 05:33:14PM +0100, Greg KH wrote:
quoted
On Thu, Jan 19, 2017 at 05:12:15PM +0100, Manuel Schölling wrote:
quoted
On Thu, 2017-01-19 at 14:23 +0100, Greg KH wrote:
quoted
On Fri, Jan 13, 2017 at 09:07:57PM +0100, Manuel Schölling wrote:
quoted
+	  This feature might break your tool of choice to flush
the scrollback
+	  buffer, e.g. clear(1) will work fine but Debian's
clear_console(1)
+	  will be broken, which might cause security issues.
+	  You can use the escape sequence \e[3J instead if this
feature is
+	  activated.
I'd recommend that patch get to clear_console() first, having it use the
new escape sequence, if it isn't supported, shouldn't cause any
problems, right?
doko: would you consider, pretty please with a cherry on top, applying the
patch I've sent to this bug?  The privacy/security issue is pretty minor and
applies only to a tiny fraction of users, but I understand why Greg is
reluctant.
# Subject: Bug#845177 closed by Matthias Klose [off-list ref]
#
# This is an automatic notification regarding your Bug report
# which was filed against the bash package:
#
# #845177: clear_console: assumes VT switch clears scrollback
#
# It has been closed by Matthias Klose [off-list ref].
[...]
# Changes:
#    * clear_console: Securely erase the current console. Closes: #845177.
This means it was accepted?  Or rejected?

confused,

greg k-h
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