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DateTue, 03 Apr 2007 09:24:29 +0800
From"Antonino A. Daplas" <>
Subject[PATCH] vt: Expose system-wide UTF-8 default setting via sysfs
Create a variable, default_utf8, that defines the system-wide default UTF-8
setting. This variable can be altered via sysfs. If the variable is properly
set, this should mimimize breakage of UTF-8 encoded consoles when doing a
reset or echo -e '\033c' and of newly opened/allocated consoles.

This is based from patches by Jan Engelhardt and Paul LeoNerd Evans.

Signed-off-by: Antonino Daplas <adaplas@gmail.com>
---
> I think you're missing the whole point of console reset. Its purpose is
> to force the console into a known-good state. The fewer pieces of state
> it leaves unset, the better. To some degree it's less important what
> that state actually is.
Okay, you convinced me. Hopefully this is acceptable to all parties.

Andrew,

If everybody agrees, can you drop the previous patch I sent to you, and use
this instead?

Tony

drivers/char/vt.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 1bbb45b..8aca96f 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -157,6 +157,8 @@ static void blank_screen_t(unsigned long
static void set_palette(struct vc_data *vc);

static int printable; /* Is console ready for printing? */
+static int default_utf8;
+module_param(default_utf8, int, S_IRUGO | S_IWUSR);

/*
* ignore_poke: don't unblank the screen when things are typed. This is
@@ -1497,7 +1499,7 @@ static void reset_terminal(struct vc_dat
vc->vc_charset = 0;
vc->vc_need_wrap = 0;
vc->vc_report_mouse = 0;
- vc->vc_utf = 0;
+ vc->vc_utf = default_utf8;
vc->vc_utf_count = 0;

vc->vc_disp_ctrl = 0;
-
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