vt:tackle kbd_table
Keyboard struct lifetime is easy, but the locking is not and is completely
ignored by the existing code. Tackle this one head on
- Make the kbd_table private so we can run down all direct users
- Hoick the relevant ioctl handlers into the keyboard layer
- Lock them with the keyboard lock so they don't change mid keypress
- Add helpers for things like console stop/start so we isolate the poking
around properly
- Tweak the braille console so it still builds
There are a couple of FIXME locking cases left for ioctls that are so hideous
they should be addressed in a later patch. After this patch the kbd_table is
private and all the keyboard jiggery pokery is in one place.
This update fixes speakup and also a memory leak in the original.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/vt/selection.c b/drivers/tty/vt/selection.c
index 7a0a12a..738e45a 100644
--- a/drivers/tty/vt/selection.c
+++ b/drivers/tty/vt/selection.c
@@ -30,6 +30,7 @@
extern void poke_blanked_console(void);
+/* FIXME: all this needs locking */
/* Variables for selection control. */
/* Use a dynamic buffer, instead of static (Dec 1994) */
struct vc_data *sel_cons; /* must not be deallocated */
@@ -138,7 +139,7 @@
char *bp, *obp;
int i, ps, pe, multiplier;
u16 c;
- struct kbd_struct *kbd = kbd_table + fg_console;
+ int mode;
poke_blanked_console();
@@ -182,7 +183,11 @@
clear_selection();
sel_cons = vc_cons[fg_console].d;
}
- use_unicode = kbd && kbd->kbdmode == VC_UNICODE;
+ mode = vt_do_kdgkbmode(fg_console);
+ if (mode == K_UNICODE)
+ use_unicode = 1;
+ else
+ use_unicode = 0;
switch (sel_mode)
{