From: Adam Borowski Date: Wed, 19 Feb 2014 00:38:04 +0000 (+0100) Subject: vt: detect and ignore OSC codes. X-Git-Tag: v3.15-rc1~138^2~31 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=63f3a16db915096d7a80a96748adba00feb07a32;p=pandora-kernel.git vt: detect and ignore OSC codes. These can be used to send commands consisting of an arbitrary string to the terminal, most often used to set a terminal's window title or to redefine the colour palette. Our console doesn't use OSC, unlike everything else, which can lead to junk being displayed if a process sends such a code unconditionally. The rules for termination follow established practice rather than Ecma-48. Ecma-48 requires the string to use only byte values 0x08..0x0D and 0x20..0x7E, terminated with either ESC \ or 0x9C. This would disallow using 8-bit characters, which are reasonable for example in window titles. A widespread idiom is to terminate with 0x07. The behaviour for other control characters differs between terminal emulators, I followed libvte and xterm: * 0x07 and ESC anything terminate * nothing else terminates, all 8-bit values including 0x9C are considered a part of the string Signed-off-by: Adam Borowski Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed